VACCINE Peer Review The History Of The Global Vaccination Program In 1000 Peer Reviewed Reports And Studies 1915-2015 A Jeff Prager Publication “Dissent is crucial for the advancement of science. Disagreement is at the heart of peer review and is important for uncovering unjustified assumptions, flawed methodologies and problematic reasoning.” I. de Melo-Martín and K. Intemann, Division of Medical Ethics, Department of Public Health, Weill Cornell Medical College, New York, USA “the harm from vaccines has seriously exceeded the benefit of disease prevention” Dr. Harold Buttram “No batch of vaccine can be proved safe before it is given to children” Surgeon General of the United States, Leonard Scheele, addressing an AMA convention in 1955 “The only safe vaccine is a vaccine that is never used” Dr. James A. Shannon, National Institutes of Health “Immune challenges during early development, including those vaccine-induced, can lead to permanent detrimental alterations of the brain and immune function. Experimental evidence also shows that simultaneous administration of as little as two to three immune adjuvants can overcome genetic resistance to autoimmunity. In some developed countries, by the time children are 4 to 6 years old, they will have received a total of 126 antigenic compounds along with high amounts of aluminum adjuvants through routine vaccinations. According to the US Food and Drug Administration, safety assessments for vaccines have often not included appropriate toxicity studies because vaccines have not been viewed as inherently toxic. Taken together, these observations raise plausible concerns about the overall safety of current childhood vaccination programs.” From the Journal Lupus, February 2012 by Lucija Tomljenovic & CA Shaw, Neural Dynamics Research Group Institutional Corruption of Pharmaceuticals and the Myth of Safe and Effective Drugs Donald W. Light Rowan University, School of Osteopathic Medicine Harvard University - Edmond J. Safra Center for Ethics Joel Lexchin York University Jonathan J. Darrow Harvard Medical School Donald W. Light, Ph.D., is a fellow for 2012-2013 at the Edmond J. Safra Center for Ethics at Harvard University in Cambridge, MA. He received his Ph.D. in sociology from Brandeis University and is a professor of comparative health policy at Rowan University, School of Osteopathic Medicine. Joel Lexchin, M.Sc., M.D., has been teaching health policy for 12 years at York University in Toronto, ON. He received his M.D. from the University of Toronto in 1977 and since 1988 has been an emergency physician at the University Health Network in Toronto. Jonathan J. Darrow, J.D., M.B.A., LL.M., S.J.D., is a research fellow at Harvard Medical School and a lecturer on law at Bentley University in Waltham, MA. He received his S.J.D. from Harvard in 2013. ~ June 1, 2013 ~ Journal of Law, Medicine and Ethics, 2013, Vol. 14, No. 3:590-610 Abstract Over the past 35 years, patients have suffered from a largely hidden epidemic of side effects from drugs that usually have few offsetting benefits. The pharmaceutical industry has corrupted the practice of medicine through its influence over what drugs are developed, how they are tested, and how medical knowledge is created. Since 1906, heavy commercial influence has compromised Congressional legislation to protect the public from unsafe drugs. The authorization of user fees in 1992 has turned drug companies into the FDA’s prime clients, deepening the regulatory and cultural capture of the agency. Industry has demanded shorter average review times and, with less time to thoroughly review evidence, increased hospitalizations and deaths have resulted. Meeting the needs of the drug companies has taken priority over meeting the needs of patients. Unless this corruption of regulatory intent is reversed, the situation will continue to deteriorate. We offer practical suggestions including: separating the funding of clinical trials from their conduct, analysis, and publication: independent FDA leadership; full public funding for all FDA activities; measures to discourage R&D on drugs with few if any new clinical benefits; and the creation of a National Drug Safety Board. Institutional corruption is a normative concept of growing importance that embodies the systemic dependencies and informal practices that distort an institution’s societal mission. An extensive range of studies and lawsuits already documents strategies by which pharmaceutical companies hide, ignore, or misrepresent evidence about new drugs; distort the medical literature; and misrepresent products to prescribing physicians. We focus on the consequences for patients: millions of adverse reactions. After defining institutional corruption, we focus on evidence that it lies behind the epidemic of harms and the paucity of benefits. It is our thesis that institutional corruption has occurred at three levels. First, through large-scale lobbying and political contributions, the pharmaceutical industry has influenced Congress to pass legislation that has compromised the mission of the Food and Drug Administration (FDA). Second, largely as a result of industry pressure, Congress has underfunded FDA enforcement capacities since 1906, and turning to industry-paid “user fees” since 1992 has biased funding to limit the FDA’s ability to protect the public from serious adverse reactions to drugs that have few offsetting advantages. Finally, industry has commercialized the role of physicians and undermined their position as independent, trusted advisers to patients. Institutional Integrity: The Baseline of Corruption If “corruption” is defined as an impairment of integrity or moral principle, then institutional corruption is an institution’s deviation from a baseline of integrity. In the case of Congress, integrity demands that democratically elected representatives should be dedicated solely to the best interests of the people they represent. According to seminal essays on institutional corruption by Dennis Thompson and Larry Lessig, this baseline of integrity is corrupted because elections are not publicly funded. As a result, congressional representatives must constantly raise funds from a tiny percent of the population and respond to their priorities. This dependency corruption creates an “economy of influence,” even if individual actors are well-intentioned. Lessig’s examples portray how secrecy and rationalizations disguise distortions in the democratic process and mission. The concept of institutional corruption highlights numerous distinctions — between what is legal and illegal; between good people doing bad things, not bad people doing bad things; between influence, not money, affecting decisions. These are the ends of continua, and there is a need to recognize degrees of corruption in between. Special interests also influence members of Congress to make legal what has been illegal or else to game the rules, thereby blurring the line between legal and illegal as well as making it hard to determine the law’s intent. Just as a proper electoral democracy is devoted to the public good, health care systems are founded on the moral principles of beneficence, nonmaleficence (“ first, do no harm”), respect for autonomy, and the just distribution of scarce resources. Based on these principles, health care workers are obliged to use the best medical science to relieve suffering and pain, treat illness, and address risks to health. The institutional corruption of health care consists of deviations from these principles. The major patent-based research pharmaceutical companies also nominally commit themselves to improving health and relieving suffering. For example, Merck promises “to provide innovative, distinctive products that save and improve lives ... and to provide investors with a superior rate of return.” Pfizer is dedicated “to applying science and our global resources to improve health and well-being at every stage of life.” Pharmaceutical companies continuously emphasize how deeply society depends on their development of innovative products to improve health. But in fact, these companies are mostly developing drugs that are little better than existing products but have the potential to cause widespread adverse reactions even when appropriately prescribed. This deviation from the principles of health care by institutions allegedly dedicated to health care is institutional corruption. We present evidence that industry has a hidden business model to maximize profits on scores of drugs with clinically minor additional benefits. Physician commitment to better health is compromised as the industry spends billions to create what Lessig calls a “gift economy” of interdependent reciprocation. New research finds that truly innovative new drugs sell themselves in the absence of such gift-economy marketing. Regulators such as the FDA and the Environmental Protection Agency arise when unregulated competition is perceived to cause serious harm to society and government regulation is needed to address the problem. The FDA was founded to protect the public’s health from the fraudulent cures peddled in the 19th century. Through a series of legislative enactments, often in response to a drug disaster, the pharmaceutical regulatory side of the FDA has acquired ever-wider responsibilities to ensure that new drugs do more good than harm. Institutional corruption consists of distortions of these responsibilities, such as approving drugs that are mostly little better than existing medications, failing to ensure sufficient testing for serious risks, and inadequately guarding the public from harmful side effects. These distortions serve commercial interests well and public health poorly. For the past 50 years, patent-based research companies have objected to the FDA’s gatekeeping function as being too rigid and too slow. They have claimed that an obsessive concern about safety has undermined patient access to drugs that could save lives or reduce the burdens of ill health. This message is increasingly being accepted by the FDA. Flooding the Market with Drugs of Little Benefit In response to the emphasis by pharmaceutical companies, their lobbyists, and their trade association — the Pharmaceutical Research Manufacturers of America (PhRMA) — on the high risk and cost of research and development (R&D), Congress has authorized billions in taxpayer contributions to support R&D, exemptions from market competition, and special privileges. Patents, of course, can be found in all industries, but lobbyists for the pharmaceutical industry have successfully pressured Congress to provide several forms of market protection beyond patents. Therapeutic Value of Drugs Marketed in France, 2002-2011 The industry measures “innovation” in terms of new molecular entities (NMEs), but most NMEs provide at best minor clinical advantages over existing ones and may lawfully be approved by the FDA even if they are inferior to previously approved drugs. The preponderance of drugs without significant therapeutic gain dates back at least 35 years. From the mid-1970s through the mid-1990s, multiple assessments have found that only 11 to 15.6 percent of NMEs provide an important therapeutic gain. Millions of patients benefit from the one out of six drugs that are therapeutically significant advances; but most R&D dollars are devoted to developing molecularly different but therapeutically similar drugs, which tends to involve less risk and cost for manufacturers. These drugs are then sold through competition based on brand name, patent status, and newness, rather than on their therapeutic merits. An analysis of data from the National Science Foundation by Donald Light and Joel Lexchin indicates that patent-based pharmaceutical companies — often deemed by Congress, the press, the public, and themselves to be “innovative” — in fact devote only 1.3 percent of revenues, net of taxpayer subsidies, to discovering new molecules. The 25 percent of revenues spent on promotion is about 19 times more than the amount spent on discovering new molecules. In short, the term “R&D” as used by industry primarily means “development” of variations rather than the path-breaking “research” that onlookers might like to imagine. The independent drug bulletin, La revue Prescrire, analyzes the clinical value of every new drug product or new indication approved in France. From 1981 to 2001, it found that about 12 percent offered therapeutic advantages.But in the following decade, 2002- 2011, as shown in Figure 1, only 8 percent offered some advantages and nearly twice that many — 15.6 percent – were judged to be more harmful than beneficial. A mere 1.6 percent offered substantial advantages. Assessments by the Canadian advisory panel to the Patented Medicine Prices Review Board and by a Dutch general practice drug bulletin have come to similar conclusions. No comparable review has been done in the United States on the 229 NMEs approved by the FDA between 2002 and 2011. This decrease does not come from the “innovation crisis” of fewer new molecules entering trials or eventually being approved but from fewer new drugs being clinically superior. The number of products put into trials has actually increased as the number of clinically superior drugs has decreased. These facts provide evidence that companies are using patents and other protections from market competition primarily to develop drugs with few if any new therapeutic benefits and to charge inflated prices protected by their strong IP rights. Despite the small number of clinically superior drugs, sales and profits have soared as successful marketing persuades physicians to prescribe the much more costly new products that are at best therapeutically equivalent to established drugs. Both an American and a Canadian study found that 80 percent of the increase in drug expenditures went to paying for these minor-variation new drugs, not for important advances. Companies claim that R&D costs are “unsustainable.” But over the past 15 years, revenues have increased six times faster than has investment in R&D. Almost a decade ago, Jerry Avorn, a widely respected pharmacoepidemiologist and author of a book on the risks of drugs, described how the big pharmaceutical companies exploited patents and concluded that “[l]aws designed to encourage and protect meaningful innovation had been turned into a system that rewarded trivial pseudo-innovation even more profitably than important discoveries.” He also noted that efforts in Congress to introduce a “reasonable pricing clause” that would reflect large taxpayer contributions to new drugs were defeated by industry lobbyists. An Epidemic of Harmful Side Effects Most new drugs approved and promoted since the 1970s lack additional clinical advantages over existing drugs and — as with all drugs — they have been accompanied by harmful side effects. A systematic review of the 39 methodologically strongest studies performed in the U.S. between 1964 and 1995 examined patients who were hospitalized due to a serious adverse drug reaction (ADR) or who experienced an ADR while in the hospital. The review found that 4.7 percent of hospital admissions were due to serious reactions from prescription drugs that had been appropriately prescribed and used. In addition, 2.1 percent of in-hospital patients who received correctly prescribed medications experienced a serious ADR, for a total of 6.8 percent of hospital patients having serious ADRs. Applying this 6.8 percent hospital ADR rate to the 40 million annual admissions in U.S. acute care hospitals indicates that up to 2.7 million hospitalized Americans each year have experienced a serious adverse reaction. Of all hospitalized patients, 0.32 percent died due to ADRs, which means that an estimated 128,000 hospitalized patients died annually, matching stroke as the 4th leading cause of death. Deaths and serious reactions outside of hospitals would significantly increase the totals. An analysis conducted in 2011, based on a year of ADRs reported to the FDA, came to similar conclusions: Americans experienced “2.1 million serious injuries, including 128,000 patient deaths.” Other studies reveal that one in every five NMEs eventually caused enough serious harm in patients to warrant a severe warning or withdrawal from the market. Of priority drugs that were reviewed in slightly more than half the normal time, at least one in three of them caused serious harm. The public health impacts are even greater when milder adverse reactions are taken into account. Given estimates that about 30 ADRs occur for every one that leads to hospitalization, about 81 million side effects are currently experienced every year by the 170 million Americans who use pharmaceuticals. Groups such as pregnant women, elderly patients, and those who are taking multiple medications are especially at risk. Most of these medically minor adverse reactions are never brought to clinical attention, but even minor reactions can impair productivity or functioning, lead to falls, and cause potentially fatal motor vehicle accidents. Contributors to More Harm and Less Benefit Are the adverse side effects we have just been describing simply the “price of progress or an unavoidable risk of drug therapy?” In fact, evidence suggests that commercial distortions of the review process and aggressive marketing contribute to both undermining beneficence as health care’s raison d’être and to the epidemic of harm to patients. Distorting, Limiting, and Circumventing Safety Regulations Since at least the 1890s, the public has clamored for Congress to regulate contaminated or adulterated foods and harmful or ineffective medicines (medicines that may delay truly useful treatments). At that time, lobbyists — paid from drug profits — argued that even bills to require accurate listing of secret ingredients would destroy the industry. These lobbyists had managed to have earlier bills sent to die in the Committee on Manufactures until President Roosevelt intervened to secure passage of the 1906 Food and Drug Act, which still only required that statements on labels be true and provided no budget for enforcement. Work on what would become the 1938 food and drug law began in 1933 with a bill that would prohibit misstatements in advertising and require manufacturers to prove to the FDA that drugs were safe before being allowed to sell them. The companies’ two trade associations launched “well-choreographed screams of protest” and letter-writing campaigns to mislead Congress and to distort its mission to protect its constituents from harm. Employees of drug makers wrote to Congress, arguing that requiring companies to make honest claims about safe drugs would put thousands out of work. The FDA staff wanted the legislation passed but were stopped by threats of prosecution if they campaigned for it. Then a manufacturer added diethylene glycol (antifreeze) to a sulfa drug to make a sweet-tasting elixir and children started dying. Public response trumped industry lobbyists and Congress passed the 1938 law, requiring that drugs be safe but leaving it to companies to decide how to define and test for safety. For the next 25 years, drugs were approved within 180 days unless the FDA objected, based on the companies’ tests and reports of safety. Some companies “tested” their products by sending samples out to providers for feedback, keeping no records of the results, and denying serious harms when reported by doctors. Daniel Carpenter, the author of a book considered to be a definitive work on the politics of the FDA, has detailed how the FDA staff dedicated themselves to enforcing the rules and developing better criteria for safety and efficacy. But as Malcolm Salter, at the Harvard Business School emphasizes, companies institutionalize corruption by getting legislative and administrative rules shaped to serve their interests, either directly or by crafting rules in ways they can game. In his review of new pharmaceutical products in the 1940s and 1950s, Dr. Henry Dowling, an AMA senior officer and expert, found that companies launched 200-400 a year but only three on average were clinically useful. Physicians, swamped with far more drugs than they could know much about, relied on sales reps to brief them, entertain them, and leave an ample supply of free samples as gifts that the physicians could then give to their patients — a two-stage economy of reciprocation. In effect, through political pressure and lobbying, companies minimized the role of the FDA as the protector of public health for its first 56 years. Following the 1962 amendments, propelled to passage by the thalidomide tragedy, the FDA commissioned the National Research Council, as part of the National Academy of Sciences, to review the effectiveness of all 2820 drugs (available in 4350 different versions) approved between 1938 to 1962. Companies were required to submit substantial evidence of effectiveness. The review concluded that seven percent of the drugs reviewed were completely ineffective for every claim they made and a further 50 percent were only effective for some of the claims made for them. Although the FDA has acted to remove many of these ineffective drugs from the market, some pre-1962 drugs are — more than 50 years later — still under-going review and are among the “several thousand drug products” that, according to a 2011 FDA guidance document, are today “marketed illegally without required FDA approval.” Regulatory capture begins with the dependency corruption of Congress, which passes the regulations and provides the funding for agencies to protect the public. While the 1962 amendments ushered in the modern era of testing for safety and efficacy before a drug can be approved, three key features of the modern drug-testing system actually work for industry profits and against the development of safe drugs that improve health. First, three criteria used by the FDA contribute to the large number of new drugs approved with few therapeutic advantages. New drugs are often tested against placebos rather than against established effective treatments, and the use of surrogate or substitute end points, rather than actual effects on patients’ health. Noninferiority trials that merely show that the product is not worse than another drug used to treat the same condition by more than a specified margin are accepted, rather than requiring superiority trials. Silvio Garattini, founder of the Mario Negri Institute for Pharmacological Research, points out that placebo and noninferiority trials violate international ethical standards and provide no useful information for prescribing. Second, allowing companies to test their own products has led them — as rational economic actors — to design trials in ways that minimize detection and reporting of harms and maximize evidence of benefits. Furthermore, clinical trials for new drugs are designed to test primarily for efficacy and generally are not able to detect less common adverse events. Industry-friendly rules allow companies to exclude those patients most likely to have adverse reactions, while including those most likely to benefit, so that drugs look safer and more effective than they are in practice. Approvals based on scientifically compromised trials underlie the large number of heavily marketed new drugs with few or no new therapeutic benefits to offset their under-tested risks of harm. Third, companies have created what can be characterized as the trial-journal pipeline because companies treat trials and journals as marketing vehicles. They design trials to produce results that support the marketing profile for a drug and then hire “publication planning” teams of editors, statisticians, and writers to craft journal articles favorable to the sponsor’s drug. Articles that present the conclusions of commercially funded clinical trials are at least 2.5 times more likely to favor the sponsor’s drug than are the conclusions in articles discussing non-commercially funded clinical trials. Yet, journal approval is deemed to certify what constitutes medical knowledge. Published papers legitimate the pharmaceutical products emerging from the R&D pipeline and provide the key marketing materials. Furthermore, companies are much less likely to publish negative results, and they have threatened researchers who break the code of secrecy and confidentiality about those results. Positive results are sometimes published twice — or even more often — under different guises. This further biases meta-analyses — a method of statistically combining the results of multiple studies — and clinical guidelines used for prescribing. The result is “a massive distortion of the clinical evidence.” For decades, the FDA has kept silent about these practices and about the discrepancies between the data submitted to the FDA by companies and the findings published in journal articles, to the detriment of patients but much to the benefit of the companies. In sum, testing and FDA criteria approval provide little or no information to clinicians on how to prescribe new drugs, a vacuum filled by company-shaped “evidence” that misleads physicians to prescribe drugs that are less safe and effective than indicated by evidence that the FDA possesses. PDUFA: Conflict-of-Interest Payments In 1992, after years of underfunding and cuts in the 1980s that contributed to drug review times ballooning from 6 to 30 months, Congress passed the Prescription Drug User Fee Act (PDUFA), authorizing the FDA to collect “user fees” from drug companies that would allow it to hire 600 more reviewers and thereby speed up drug review. Supporters claimed that fees would increase incentives for innovation and improve health; but aside from clearing the backlog of NMEs waiting for approval, industry fees have not increased innovation as measured by clinically superior drugs. In return for paying user fees, companies required the FDA to guarantee that it would review priority applications within six months and standard applications within 12 months of submission. Shortened review times led to substantial increases in serious harms. An in-depth analysis found that each 10-month reduction in review time — which could take up to 30 months — resulted in an 18.1-percent increase in serious adverse reactions, a 10.9percent increase in hospitalizations, and a 7.2-percent increase in deaths. Now, 20 years later, what Carpenter calls “corrosive capture” has set in — a weakened application of regulatory tools and a cultural capture of rhetoric about saving lives by getting new drugs to patients more quickly. For the FDA, the reduction in review time combined with the fear that missing review deadlines will jeopardize continued PDUFA funding has also led to an increase in “up against the wall” approvals as review deadlines approach. Carpenter and his colleagues found that “the probability of a drug approved in the two months before the deadline receiving a new black-box warning (the most serious safety warning that the FDA can issue) is 3.27 times greater than a drug approved at some other time” and the likelihood of a drug being withdrawn from the market because of serious adverse events is 6.92 times greater. These detailed studies corroborate what FDA staff told the Office of the Inspector General, namely, that concerns arising near the end of the review period are not adequately addressed, that needed meetings with advisory committees are not held, and that label warnings and contraindications are hastily written. As a result, there are “tens of thousands of additional hospitalizations, adverse drug reactions, and deaths.” The 1998 withdrawal of five drugs, used by 19.8 million Americans, prompted critical reflection. Three distinguished physicians were struck by how little information had been gathered about the harmful side effects of these drugs before they were withdrawn. They attributed inaction to the FDA’s lack of interest in safety, lack of funds, and to “the lack of a proactive, comprehensive and independent system to evaluate the long-term safety, efficacy, and toxicity of drugs” after FDA approval. To compensate for the FDA’s failures, they called for an independent National Drug Safety Board — akin to the National Transportation Safety Board that investigates each plane crash and holds public meetings — so that the same part of the FDA that approves drugs, the Center for Drug Evaluation and Research (CDER), would not later be asked to decide whether that drug should be restricted or withdrawn. In other words, public health would not depend on FDA officials’ willingness to admit their own mistakes. Such an independent board should establish an active monitoring system and gather comparative data across a given therapeutic class so it could provide objective information and develop better strategies for addressing adverse reactions as a major cause of death. In 1997, a year before these five withdrawals, Congress had passed PDUFA II and companies had insisted that none of the fees collected be spent on post-market surveillance or on drug-safety programs. PDUFA II, III, IV, and V and related legislation provided the FDA with steeply increasing user fees but included lower criteria for approval, mandated that an industry representative be on FDA scientific advisory committees, lowered barriers to promotional efforts by companies, and required FDA officers to consult and negotiate with industry on the agency’s goals and plans. Offsetting the harms associated with PDUFA I’s shortened approval framework are several tools created in PDUFA III through V for detecting, managing, and raising awareness of risks such as the Sentinel system and the Risk Evaluation and Mitigation Strategies; but there is no clear evidence these are reducing the epidemic of harms. These tools are inadequate to counterbalance the increase in risks — let alone to improve safety. The additional $10 million of funding provided by PDUFA III for the Office of Drug Safety and the $7.5 million provided for the FDA’s advertising enforcement arm are tiny in comparison to the more than $690 Read the rest: https://app.box.com/s/5414zf7lufhtwf3czjfo9msafnoz6ht5 or: million in user fees that flow to the FDA each year. In sum, PDUFA allocates user fees overwhelmingly to ensure speedy review of new drug applications while leaving safety and enforcement dependent on grossly inadequate funding, perpetuating a history of underfunding safety. Granting priority status to more drugs further increases the number of drugs reviewed in the shortest time and the chance of a major safety issue increases from one drug in five to one in three. Between 1999 and 2008, the FDA gave priority review status to almost 47 percent (114 of 244) of new drug applications, more than four times the proportion of drugs found to have superior clinical effects by independent review groups. Reflecting the cultural and corrosive capture of the FDA, its Commissioner said recently that “an increasing number of treatments are being approved under the agency’s fast-track, priority review ... to get critical and innovative medicines to market more rapidly.” Quicker reviews and less evidence of clinical benefit have rewarded the hidden business model of developing still more drugs with minor benefits. The FDA’s obligation to serve the public is being corroded by pressures to serve the companies it regulates. As for post-market surveillance — “the single most important function…for protecting the public against the dangers of harmful drugs” — it is put largely in the hands of the manufacturers and the FDA Center for Drug Evaluation and Research (CDER), the part of the FDA that companies pay to review their new drug applications. After approval, aggressive marketing of new drugs to doctors for both approved and unapproved uses before good safety information is available maximizes the number of patients exposed to risks from the roughly 25 to 40 new NMES approved annually. Field studies find that most drug representatives do not discuss adverse side effects. Although the law requires companies to submit some marketing materials for review, Congress and the FDA allocate only a small budget and staff to review about 75,000 submissions a year for false or misleading information. Further, the small stream of letters ordering that inaccuracies be corrected is subject to a review process that delays their reaching the companies. Marketing for unapproved or “off-label” uses worsens the balance of harm and benefit and undermines the purpose of testing to show that a drug is effective and safe for a specific use. While trying drugs for new uses is clinically important, especially for certain populations such as children and cancer patients, 75 percent of off-label prescribing is neither supported by sound evidence nor accompanied by an organized means for gathering such evidence. Companies retain leading experts to expand use, broaden clinical guidelines, and conduct small, short sham trials that companies get published and hand out to their physician-customers as “evidence.” A 15-month investigation by the Committee on Government Reform of the U.S. House of Representatives found “a growing laxity in FDA’s surveillance and enforcement procedures, a dangerous decline in regulatory vigilance, and an obvious unwillingness to move forward even on claims from its own field offices.” The resulting 2006 report also documented a 53.7-percent decline in warning letters. Since then, FDA leadership has shifted to talking about being a “partner” with industry to get more drugs to patients more quickly. For the reasons we explained above, the proportion of new products with clinical advantages seems to have moved from about 1 in 8 down to 1 in 12, while the proportion with serious harms has gone up from 1 in 5 towards 1 in 3 as the number of drugs given priority status increases. http://ethics.harvard.edu/news/institutional-corruption-and-pharmaceutical-policy Direct from author: https://www.academia.edu/6750219/Institutional_Corruption_and_the_Myth_of_Safe_and_Effective_Drugs Medical Veritas • 2008 The truth behind the vaccine cover-up Russell L. Blaylock, MD Abstract On June 7-8, 2000 a secret conference was held at the Simpsonwood Conference Center in Norcross, Georgia to discuss a study examining the link between increasing doses of Thimerosal and neurodevelopmental disorders. The study was done using the Vaccine Safety Datalink (VSD) data-base, an official governmental data bank collecting patient vaccination information on the children from the health maintenance organizations (HMOs) being paid to participate. Attending were 51 scientists, representatives of pharmaceutical vaccine manufacturing companies and a representative of the World Health Organization; the public and the media were unlawfully excluded. The conclusions of this meeting were quite startling, since it confirmed a dose-response link between Thimerosal and neurodevelopmental disorders that held up to rigorous statistical analyses. In their discussion, they make plain why the meeting was held in secret: the conclusions would have destroyed the public’s confidence in the vaccine program, and more importantly, their faith in vaccine authorities. When the results of this study were published three years later in the journal Pediatrics, the “problem” had been fixed, in that by adding another set of data from a third HMO, reorganizing the criteria for inclusion and restructuring the patient groupings, a less than statistically significant link was demonstrated. In my analysis I discuss the more outrageous statements made during the meeting and how accepted experts in the field of mercury neurotoxicity were excluded from the meeting. I was asked to write a paper on some of the newer mechanisms of vaccine damage to the nervous system, but in the interim I came across an incredible document that should blow the lid off the cover-up being engineered by the pharmaceutical companies in conjunction with powerful governmental agencies. continued on page 725-726 “There is a great deal of evidence to prove that immunization of children does more harm than good” Dr. J. Anthony Morris, former Chief Vaccine Control Officer, FDA Table of Contents Chapter One Manufacturing Biologics Page 24 Chapter Two Thimerosal • Mercury Page 129 Chapter Three Alum • Aluminum Salts Page 308 Chapter Four The HPV Vaccine Page 489 Chapter Five Vaccination History 1915 - 2015 Page 525 Chapter Six On Autism Page 980 Chapter Seven Short Essays On Vaccination Page 1041 Featured Full-Length Reports Page 186 ........ Mercury toxicity: Genetic susceptibility and synergistic effects Page 199 ........ Heavy-Metal Toxicity—With Emphasis on Mercury Page 430 ........ Do aluminum vaccine adjuvants contribute to the rising prevalence of autism? Page 437 ........ Aluminum Vaccine Adjuvants: Are they Safe? Page 440 ........ Mechanisms of aluminum adjuvant toxicity and autoimmunity in pediatric populations Page 470 ........ Aluminum-induced entropy in biological systems: implications for neurological disease Page 503 ........ Who Profits From Uncritical Acceptance of Biased Estimates of Vaccine Efficacy and Safety? Page 505 ........ No autoimmune safety signal after vaccination with quadrivalent HPV vaccine Gardasil? Page 507 ........ Death after Quadrivalent Human Papillomavirus (HPV) Vaccination: Causal or Coincidental? Page 509 ........ HPV vaccines and cancer prevention, science versus activism Page 624 ........ Vaccines and Autism Page 645 ........ Biological Evidence of Significant Vaccine Related Side-effects Resulting in Neurodevelopmental Disorders Page 649 ........ Chronic Microglial Activation and Excitotoxicity Secondary to Excessive Immune Stimulation: Possible Factors in Gulf War Syndrome and Autism Page 697 ........ FDA Science and Mission at Risk Page 698 ........ Current childhood vaccine programs Page 699 ........ Vaccines, depression, and neurodegeneration after age 50 years: another reason to avoid the recommended vaccines Page 705 ........ Modeling Neurodevelopment Outcomes and Ethylmercury Exposure from Thimerosal-Containing Vaccines Page 720 ........ Current childhood vaccine programs: An overview with emphasis on the Measles-Mumps-Rubella (MMR) vaccine Page 726 ........ The truth behind the vaccine cover-up Page 818 ........ Vaccination: Why the ‘one size fits all’ vaccination argument does not fit all! Page 872 ........ Hidden in Plain Sight: Vaccines as a Major Risk Factor for Chronic Disease Page 912 ........ Methodological issues and evidence of malfeasance in research purporting to show thimerosal in vaccines is safe Page 998 ........ A possible central mechanism in autism spectrum disorders Part 1 Page 999 ........ A possible central mechanism in autism spectrum disorders Part 2 Page 1000 ...... A possible central mechanism in autism spectrum disorders Part 3 January 2016 • Vaccine Peer Review • The History Of The Global Vaccination Program In 1000 Peer Reviewed Reports And Studies • 1915-2015 • Jeff Prager Books • for Camillie, Syrena and Illiana http://jprager9.wix.com/jeffpragerbooks Introduction V accines are not the product of altruistic and generous or benevolent action on the part of the manufacturers. Gardasil alone sells for well over 100 dollars per injection. As a consequence, each of us at birth immediately represents thousands of dollars worth of income across the over 188 injections we’ll receive in a lifetime—according to the complete recommended US vaccination schedule—starting with 128 antigen, adjuvant and excipient injections before reaching adulthood. Vaccines are sold under an extremely clever marketing strategy that encompasses not only a “must-have” scenario for each of us but included with that is absolutely no liability for harm. What do you suppose motivated the vaccine manufacturers to work so exceedingly hard through public and governmental processes to establish a “lawsuit-free zone” for vaccines? Was it to avoid any chance at all of legal challenges? The extraordinary harm you’ll read about here is directly related to seeking that discharge of legal responsibility for damage. Many of us won’t remember that years ago the lawsuits were mounting and the vaccine business was about to come to an end. This collection of reports reveals the gruesome and stark reality that lies hidden behind what is actually “open-source and public” medical literature that, for reasons unknown, the general public will rarely see. Perhaps the difficulty in finding representative material is an obstacle. Maybe the complexities surrounding the issue are an impediment to fruitful searches. This PDF was created for these reasons. Admittedly, this is a large collection of data that can’t be examined properly in a weekend. Yet the totality of the data is what’s so very important. If one person told us that repeatedly injecting aluminum, mercury, antigens or excipients could be dangerous we might question the theory but when 100s of professionals make a medically supported claim, we should listen closely, don’t you think? The vaccine industry is rife with corruption and fraud and that’s about the only thing that isn’t actually printed. The human damage and the collateral toll from vaccination is carefully recorded and this collection discloses some of that harm. While there may be 1000 peer reviewed reports here, I can assure you that there are 1000s more just the same. This collection provides the reader with the peer review that is less complex and easier to understand. Some of you, hopefully, will research the more complex issues further on your own using terms, authors and subject matter found here. If you take the time to read all of the reports collected here you’ll come to understand certain uncomfortable realities. For example, that all of the 350plus vaccines currently in use are nothing more than population-wide experiments. The pre-licensing trials are so short and with small cohorts and they use only very healthy, robust people, that they can’t gain any knowledge at all regarding adverse events in the general population. It’s common knowledge within the industry that a vaccine isn’t tested and that adverse events are virtually unknown, until after it’s been used for some time in large segments of the population. Several years to a decade or more later they may find that there are serious problems related to a particular vaccine. This is what happened with Thimerosal. The scientific evidence came in decades later that autism, neurological disorders and other human diseases were promoted by and often caused by Thimerosal. You’ll read peer reviewed reports here from respected journals about the epidemic human damage and the cover-up. In fact, if not for the cover-up we might have been able to reduce or even eventually halt the autism epidemic. Instead, the issue has been concealed from the public and Thimerosal was quietly replaced with aluminum. Thimerosal was not “removed” from vaccines. All Thimerosal-containing vaccines (TCVs) were used up and the new lots of vaccine were made with a new adjuvant. Various aluminum salts, adjuvants used in many vaccines, may be even more insidious than Thimerosal. Numerous authors from around the world believe so. A new disease, encompassing nearly 100 different disorders and affecting as many as 50 million people in the US, has been named and studied. ASIA, autoimmune/inflammatory syndrome induced by adjuvants, was officially named by the medical research community in 2013. To paraphrase one of the authors within these pages, we’ve reached a point in time where the damage from vaccines has exceeded the hoped for protection from disease. To paraphrase further, childhood illnesses like chicken pox, measles, mumps and others are “challenge viruses” that strengthen the immune system and we’ve removed a significant and very important immune fortifying evolutionary step from humankind by vaccinating. rophagic Myofasciitis (MMF), Multiple Sclerosis (MS), Alzheimers Disease (AD), Learning Disabilities (ADHD), Arthritis, Inflammatory Bowel Disease, Crohn’s Disease (CD), Autoimmune And Inflammatory Syndrome Induced By Adjuvants (ASIA), Hodgkin and non-Hodgkin lymphomas, Allergies, Asthma and nearly 100 more diseases and disorders are all reaching epidemic proportions. They’re all caused by vaccines. Yet the greatest human epidemic of the 20th and 21st centuries will be the enormous spectrum of neurological and biological symptoms and complications associated with autism, ADHD and learning disabilities. Taken together, these neuro-bio-disorders affect one in 6 children in the USA and they are directly related to the US vaccine schedule. The material collected herein will inform the reader that vaccines cause disorders that increase the profits on tablet and capsule style drugs substantially and that vaccines are not safe, nor are they effective. The collateral damage currently being caused by what the reader will come to know as a very primitive and largely unknown and unproven science, is beyond imaginable and beyond description. It requires 100s of pages of text to accurately describe the full gamut of human damage caused by the global vaccination programs and that’s exactly what we’ve collected here. Misleading advertising campaigns with deceptive and often times unproven claims accompanied by well organized sham-marketing strategies have completely misled the average consumer who buys vaccines like lattes. The resulting tragedy is a series of epidemics of disease and disorder that translates into nothing short of the very definition of the word “pandemic.” The reports within these pages were written by many celebrated, accomplished and esteemed authors who are well known within their fields, independent authors whose integrity hasn’t been compromised by influence or wealth. Represented here are hundreds of prominent and duly recognized medical professionals and specialists, scientists, clinicians and researchers from around the world, people such as Dr. Christopher Exley, one of the worlds leading experts on Aluminum, and whose sense of humor in the face of extraordinary, planet-wide adversity, is a welcomed respite. I hope you’ll become acquainted with Dr. Jose Dorea, Dr. CA Shaw, Dr. Harold Buttram, Dr. Joachim Mutter, Dr. Russell Blaylock and Dr. Lucija Tomljenovic and their varied, prescient and wholly honest writing styles. There are many others. These are just some of my favorites. Look for them and read what they have to say and your understanding of vaccination will grow accordingly. After all, they’re writing to you. Across the globe the vaccination programs have traded several childhood diseases for nearly 100 new disorders many of which were virtually unknown just a century ago. Measles, mumps, rubella, chicken pox and other tolerable, “immune system fortifying” childhood illnesses have been replaced by epidemics, and I’m not using that word lightly. Epidemics of Autistic Spectrum Disorder (ASD), Guillain-Barre Syndrome (GBS), Mac- These issues are so critically important to these professionals that they write about them repeatedly. You can literally hear their voices in their writing. Many of the 100s of authors within these pages may be risking career advancement to expose the truth— that the harm from vaccines has seriously exceeded the benefit of disease prevention—yet none of these authors have compromised their morals. Please, listen to them. Preface Most of the ingredients in vaccines—including aluminum, mercury, formaldehyde, B2 glycoprotein, Triton X-100®, Polysorbate or Tween 80®, 60 and 20, 2-Phenoxyethanol, etc.—are neurotoxins, toxic to cells, cell structure and neurons. Vaccines are designed such that “tissue damage” is a necessary component of antibody creation to acquire some level of assumed immunity. Tissue damage, cell death or apoptosis are required aspects of vaccination success. The key is to cause tissue damage without damaging the person herself. After 100 years of vaccination science we are still as yet unable to achieve that goal. Vaccine damage is ubiquitous. There are low-responders and non-responders the medical profession fails to discuss publicly and inform us about. Within every country-population cohort—people that will respond to vaccination with low or zero recognizable titers and whose immune system simply will not “take” to the vaccine—make up a normal and expected percentage of the population. Non- and low-responders can be responsible for outbreaks of disease just as fully vaccinated individuals can acquire and spread the illnesses they were vaccinated for. Vaccination is never, ever 100% and comes with no guarantees of protection or immunity to disease nor guarantees against serious harm or death. Historically, the innate immune system was at the forefront of disease defense and it mobilized epithelial barriers (referring to the skin and the thin tissue covering the body’s surface and lining the alimentary canal and other hollow structures of the ears, eyes, nose and throat), special lymphocytes called “ natural killer (NK)” cells, plasma proteins and other immune system components. Vaccination bypasses the innate immune system and directly affects only the humoral immune system (referring to antibodies in body fluids as distinct from cells). Decades of bypassing the innate immune system along with removal of common and tolerable childhood “challenge” diseases—mumps, chicken pox, measles, etc.—has caused a reversal in the way our bodies fight viral and bacterial infection. Evolutions first line of defense and the faster, stronger primary system, the innate immune system, has been relegated to second place with vaccination causing the slower acting humoral immune system to occupy the first line of defense. The result of repeated vaccination to perturb the human immune system into developing antibodies to less than 2 dozen different tolerable childhood ailments—antibodies which have never been proven to be markers of immunity—has manifest as 100 or more human disorders after little more than 100 years of vaccination. The epidemic of disease we can now see surrounding us is staggering. The reasons for these epidemics of disease are outlined herein and are supported not by any individual report or study but by the totality of the collected evidence. I sincerely hope that the material represented here helps you to better understand a very important aspect of life in this 21st century. The link below accesses a collection of 44 full-length reports in PDF format that are free to download and that are also included herein in shorter abstract form: https://app.box.com/s/xa75ta0j9jbe05e615gd5xto9ff1mz4a “It is now universally recognized that we have a steadily growing epidemic of childhood autism, learning disabilities, and other developmental disorders, with comparable increases in asthma and allergies.” Medical Veritas International Inc • 2007 Reminiscences of America’s children in the 1930s as compared with today, and the possible role of vaccines in causing retrogressive changes Editorial by Harold Buttram, MD, FAACP 5724 Clymer Road Quakertown, PA 18951 HButtrum@woodmed.com Abstract It is now universally recognized that we have a steadily growing epidemic of childhood autism, learning disabilities, and other developmental disorders, with comparable increases in asthma and allergies. By any measure now available, these conditions were rare during the 1930s and 1940s. If this trend is to be reversed, we must seek for causes. As largely disclosed during the U.S. Congressional Hearings on issues of vaccine safety, which took place from 1999 to December, 2004, there are gross deficiencies in vaccine safety testing. Because of this lack, we have no means of identifying or proving adverse reactions when they do occur. Almost totally lacking until now, the great need is for definitive before-and-after tests specifically designed to search for adverse effects of vaccines on the neurological and immune systems as well as genetics of our children, and in findings adverse effects to make appropriate safety modifications in vaccine programs. Over the years there have been a scattering of before-and-after vaccine tests showing that there can be harm to the immune and central nervous systems, bringing suspicion on vaccines as an underlying cause of current childhood epidemics. However, these have always been of limited scale, seldom if ever with adequate follow-up. In the opinion of this observer, until the safety of vaccine programs can be assured by such testing, any further mandating of childhood vaccines will remain morally and ethically untenable. http://www.medicalveritas.com/images/00166.pdf Lucija Tomljenovic, PhD Neural Dynamics Research Group Department of Ophthalmology and Visual Sciences, University of British Columbia 828 W. 10th Ave, Vancouver, BC, V5Z 1L8 tel: 604-875-4111 (68375) Regarding H.527 Distinguished Members of the Vermont House, The argument of forcing a parent to vaccinate their child in the name of the “greater good argument” is flawed both scientifically and ethically. Firstly, all drugs are associated with some risks of adverse reactions. Because vaccines represent a special category of drugs which are by and large given to healthy individuals, and for prophylaxis against diseases to which an individual may never be exposed, the margin of tolerance for side effects is very narrow (in fact, the U.S. Food and Drug Administration (FDA) concurs with this point [1]) and careful assessment of risks versus benefits essential in deciding whether one should be vaccinated or not. Removing the “philosophical exemption” as a means to opt out from vaccination will put vulnerable but otherwise healthy individuals at risk of serious adverse reactions to vaccinations. Such an outcome should be of concern since cases of permanent neurodevelopmental disabilities and deaths following vaccination in children with underlying genetic and other susceptibilities have been firmly established in scientific literature [2-4]. Please consider carefully whether you wish to be responsible for such potential outcomes should you facilitate this legislation to come to pass. Secondly, medical ethics demand that vaccination should be carried out with the participant’s full and informed consent. This necessitates an objective disclosure of the known or foreseeable vaccination benefits and risks. The way in which pediatric vaccines are often promoted by various health authorities indicates that such disclosure is rarely given from the basis of best available knowledge but rather, largely unproven and/or untenable assumptions on both, vaccine safety and effectiveness. I shall herein elaborate on these arguments. Is Vaccine Safety Evidence “Rock Solid”? The statement by Dr Chen that “the science behind vaccination safety is rock solid” is factually inaccurate and contradicts a large body of scientific literature published on this subject [3-35]. As with any medication, vaccines can carry risks of adverse reactions (ADRs). However, in spite of the widespread notion that vaccines are largely safe and serious adverse complications are extremely rare, a close scrutiny of the scientific literature does not support this view [10-12]. For example, to date the clinical trials that could adequately address vaccine safety issues have not been conducted (i.e., comparing health outcomes in vaccinated versus non-vaccinated children). The lack of such controlled trials may be because historically, vaccines have been assumed safe [12]. There is also a view that conducting such trials would be extraordinarily difficult or unethical; the first is simply not correct, the second is not a scientific issue per se. It is also often assumed that vaccines face a tougher safety standard than most pharmaceutical products. However, according to the U.S. FDA, “Historically, the non-clinical safety assessment for preventive vaccines has often not included toxicity studies in animal models. This is because vaccines have not been viewed as inherently toxic” [1]. This is a startling admission from an Agency which according to its own mission statement is ”responsible for protecting the public health by assuring the safety, efficacy, and security of human and veterinary drugs”[36]. Essentially, what the FDA workshop [1] revealed is that not only are vaccines not adequately evaluated for toxicity but also, that the reason for such an oversight rested on a belief rather than scientific evidence. Science is not a religion in which dogmatic statements of faith can replace adequately powered, controlled, longitudinal vaccine safety studies in animals and people. Furthermore, such assumptions of safety, in the absence of actual experimental data, are not only dangerous but have historically hampered serious scrutiny of potential vaccine harms. To illustrate a recent example of grave consequences that resulted from pushing a poorly tested vaccine to young children, note that there have been a large numbers of major ADRs from seasonal influenza vaccines. Consequently, they have been suspended for use in children under five years of age in Australia. In a series of Rapid Responses addressing this issue, published in British Medical Journal, titled “Adverse events following influenza vaccination in Australia-should we be surprised?” Collignon (Director of Infectious Diseases & Microbiology at Australian National University) and colleagues from the Cochrane Collaboration review panel concluded: “There is poor evidence on how well influenza vaccines prevent any influenza complications in children and other age groups. There is good evidence that influenza vaccines study reports cherry pick results and achieve spurious notoriety. Exposing human beings to uncertain effects is a risky business” [25].The authors also noted that worldwide, the recommendations from public health authorities regarding influenza vaccination has been “misguided”[26]. It important to note that even those in the scientific community who are strong proponents of vaccinations have come to question the scientific legitimacy of “one-size fits all” vaccination practices [37]. For example, Poland (Editor in Chief of the journal Vaccine and co-author of “The age-old struggle against the antivaccinationists” [38]) and colleagues rightly ask whether “with the advances coming from the new biology of the 21st Century”, it is time to consider “how might new genetic and molecular biology information inform vaccinology practices of the future?” [37]. In light of this question Poland et al. conclude that “one-size fits all” approach for all vaccines and all persons should be abandoned. According to Poland, this conclusion applies to both vaccine efficacy, as well as safety [37]. Regarding the latter, the widely held view that serious vaccine-related ADRs are rare needs revision, as current worldwide vaccination policies indeed operate on “one-size fits all” assumption. This assumption persists despite the fact that historically, vaccine trials have routinely excluded vulnerable individuals with a variety of pre-existing conditions (i.e., premature birth, personal or family history of developmental delay or neurologic disorders including epilepsy/seizures, hypersensitivity to vaccine constituents etc. [39-43]). Because of such selection bias, the occurrence of serious ADRs resulting from vaccinations may be considerably underestimated. As mentioned previously, such an outcome should be of concern in view of documented evidence of permanent neurodevelopmental disabilities and deaths following vaccination in children with underlying genetic and other susceptibilities [2-4]. Poland et al.’s current data may thus have far broader implications for understanding vaccines, not only in terms of efficacy and the desired immune response, but also in terms of safety. Indeed, vulnerable populations will neither have the same antibody response nor the same level of tolerance to serious ADRs as non-vulnerable populations [37,44]. The Quality of Existing Vaccine Safety Data A further obfuscation of the actual rate of serious vaccine-associated ADRs may also be due to methodological inadequacy of existing vaccine trials (i.e, the frequent exclusion of individuals with potential pre-existing susceptibilities to vaccine-associated ADRs) [12], and due to the fact that the vast majority of such trials use an aluminum adjuvant-containing placebo or another aluminum-containing vaccine as the “control group” [45]. That aluminum is a demonstrated neurotoxin has been known for over 100 years [46] and in this context, it is becoming clear to a number of investigators that its use as a placebo control is scientifically untenable [45,47]. Furthermore, with regard to the studies which allegedly demonstrably show no link between autism and vaccines, it has to be emphasized that once such studies undergo proper expert scrutiny, the “evidence” against the link becomes rather flimsy. In reviewing the published literature on measles- mumps-rubella (MMR) vaccine (139 studies), the respected Cochrane Collaboration review panel concluded that, “The design and reporting of safety outcomes in MMR vaccine studies, both pre- and post-marketing, are largely inadequate” [48]. Moreover, none of the 31 studies that were included in the review met the Cochrane Collaboration’s methodological criteria. More specifically, referring to the 2001 Fombonne and Chakrabarti study [49] which was widely regarded by medical health authorities as most persuasive in disproving the link between the MMR vaccine and autism, the Cochrane Collaboration commented the following: “The number and possible impact of biases in this study was so high that interpretation of the results is impossible” [48]. Although the Cochrane Review on the safety of MMR concluded that there was no credible link between MMR vaccination and autism and Crohn’s disease, as pointed out earlier, the majority of the studies included in the evaluation were methodologically inadequate. The question thus is what “credible” or “rock solid” evidence can be derived from inadequate studies? Demonstrated Toxicity of Vaccine Constituents Vaccines contain known neurotoxins (i.e., mercury, aluminum, formaldehyde), potent adjuvants designed to hyperstimulate the immune system, as well as various antigenic compounds [10,50] albeit all in relatively small amounts. Thus a typical vaccine formulation contains all the necessary biochemical components to induce both autoimmune as well as neuoroimmune disorders. The question is not whether these compounds are in vaccines or if they are toxic, rather if in such concentrations alone or combined, they can harm the nervous and other systems. Experimental evidence indeed shows that some of these constituents (mercury and aluminum) can cause long-term neurological impairments in animal models when individually administered in vaccine-relevant human exposures [7,51-57]. Furthermore, data also demonstrate that over-stimulating the host’s immune system by repeated immunization with immune antigens and/or adjuvants inevitably leads to autoimmunity even in genetically non-susceptible animals [58,59]. Specifically, simultaneous administration of as little as two to three immune adjuvants can overcome genetic resistance to autoimmunity [59]. Yet in spite of these observations, according to the current U.S. immunization schedule by the time children are 4 to 6 years old, they will have received a total of 126 antigenic compounds along with high amounts of Al adjuvants [10]. Given the scarcity of evidence of safety of the combined pediatric schedule and the fact that administration of only a few vaccines in human adults can lead to brain dysfunction and a variety of autoimmune conditions [8,16,17,19], the concerns about the overall safety of current childhood vaccination programs are scientifically plausible and thus require urgent consideration [10]. Full Report with References http://www.vaxchoicevt.com/wp-content/uploads/2012/04/Lucija-Tomljenovic-PhD-letter.pdf https://app.box.com/s/ev8bhi6vb3rofhrkavum3v3hpt2xlil9 http://vaccinechoicecanada.com/wp-content/uploads/Forced-Vaccinations-For-the-Greater-Good-Tomljenovic.pdf “According to the Autism Society of America, autism is now considered to be an epidemic.” Journal Of Toxicology And Environmental Health Part B, Critical Review • November 2006 Evidence of toxicity, oxidative stress, and neuronal insult in autism Author information Kern JK1, Jones AM. Department of Psychiatry University of Texas Southwestern Medical Center at Dallas Dallas, Texas 75390-9119, USA janet.kern@UTSouthwestern.edu Abstract According to the Autism Society of America, autism is now considered to be an epidemic. The increase in the rate of autism revealed by epidemiological studies and government reports implicates the importance of external or environmental factors that may be changing. This article discusses the evidence for the case that some children with autism may become autistic from neuronal cell death or brain damage sometime after birth as result of insult; and addresses the hypotheses that toxicity and oxidative stress may be a cause of neuronal insult in autism. The article first describes the Purkinje cell loss found in autism, Purkinje cell physiology and vulnerability, and the evidence for postnatal cell loss. Second, the article describes the increased brain volume in autism and how it may be related to the Purkinje cell loss. Third, the evidence for toxicity and oxidative stress is covered and the possible involvement of glutathione is discussed. Finally, the article discusses what may be happening over the course of development and the multiple factors that may interplay and make these children more vulnerable to toxicity, oxidative stress, and neuronal insult. http://www.ncbi.nlm.nih.gov/pubmed/17090484 Medical Veritas • 2005 Vaccination and autoimmunity: reassessing evidence Marc Girard, MSc, MD 1 bd de la République 78000-Versailles, France Phone:+330139670110 Fax:+330139670111 agosgirard@free.fr Abstract The autoimmune risks of vaccines seem frequently overlooked. Whereas most available vaccinations are supposed to produce long-lasting immunity, the fact that they can also produce long-term detrimental immune effects seems to be ignored as evidenced by the short duration of safety studies during development. Likewise, whereas it seems natural to simply rely on surrogate markers, such as antibodies, to demonstrate vaccine efficacy, the levels of evidence required to acknowledge adverse effects is far higher. Reports to the Vaccine Adverse Event Reporting System (VAERS) are deemed more conclusive when reassuring than when suggesting significant toxicity. As a result of these blatant biases in clinical and/or epidemiological research, experts on autoimmunity and vaccine critics are limited to demonstrating theoretical mechanisms because evidence in practice is lacking. Known as the bias of the selective assessment, this unbalance in the demonstration of the benefits as compared to the risks is the bête noire of evidence-based medicine. Therefore, when readjusted to the demonstrative level normally viewed as sufficient in clinical research in general and in vaccine science specifically, the corpus of data on the autoimmune hazards of vaccines appears certainly more impressive than generally recognized and calls for further research, for an overall reassessment of the benefit/risk ratio of vaccines including multiple vaccinations. Because vaccines are now aimed at preventing diseases which may be quite rare, the Hippocratic principle of prudence is more than ever a very topical issue. Many other examples of poor methodology, selective assessment or dissimulation of data could be given. This suggests that research and development on vaccines are still at the zero- level of evidence-based medicine (EBM). As assessed with the same units of measure used with other drugs, some vaccines and specifically the hepatitis B vaccine have an unacceptable benefit/risk ratio, especially in countries where the diseases they claim to control are not endemic. For obvious reasons of profit, the threats to the scientific and medical ethics of our job have reached a worrying level: it is the personal responsibility of each of us to resist – and to support those who are the most under pressure. http://www.know-vaccines.org/PDF/VaccinationAutoimmunity.pdf “The autoimmune risks of vaccines seem frequently overlooked. Many other examples of poor methodology, selective assessment or dissimulation of data could be given. This suggests that research and development on vaccines are still at the zero-level of evidence-based medicine (EBM) ... It is the personal responsibility of each of us to resist” Pace Environmental Law Review, vol. 28, no. 2 • 2011 Unanswered Questions A Review of Compensated Cases of Vaccine-Induced Brain Injury by Mary Holland, Louis Conte, Robert Krakow and Lisa Colin Executive Summary In 1986, Congress created the Vaccine Injury Compensation Program (VICP) under the National Childhood Vaccine Injury Act (1986 Law). This Program has original jurisdiction for children’s claims of vaccine injury. Because almost all children receive multiple vaccinations for daycare and school, it is critically important that the Program provides fundamental fairness, due process and transparency. This empirical investigation, published in a peer-reviewed law journal, examines claims that the VICP compensated for vaccine-induced encephalopathy and seizure disorder. The VICP has compensated approximately 2,500 claims of vaccine injury since the inception of the program. This study found 83 cases of acknowledged vaccineinduced brain damage that include autism, a disorder that affects speech, social communication and behavior. In 21 published cases of the Court of Federal Claims, which administers the VICP, the Court stated that the petitioners had autism or described autism unambiguously. In 62 remaining cases, the authors identified settlement agreements where Health and Human Services (HHS) compensated children with vaccine-induced brain damage, who also have autism or an autism spectrum disorder. “Using publicly available information, the investigation shows that the Vaccine Injury Compensation Program (VICP) has been compensating cases of vaccine-induced brain damage associated with autism for more than twenty years. This investigation suggests that Parents reported the existence of autism in telephone interviews and supplied supplemental materials including medical diagnoses, school records, and completed, standard autism screening questionnaires to verify their reports. In 39 of the 83 cases, or 47% of the cases of vaccine injury reviewed, there is confirmation of autism or autism spectrum disorder beyond parental report. officials at HHS, the Department of Justice and the This finding of autism in compensated cases of vaccine injury is significant. U.S. government spokespeople have been asserting no vaccine-autism link for more than a decade. This finding calls into question the decisions of the Court of Federal Claims in the Omnibus Autism Proceeding in 2009 and 2010 and the statement of Health and Human Services on its website that “HHS has never concluded in any case that autism was caused by vaccination.” this association but failed to publicly disclose it.” Using publicly available information, the investigation shows that the VICP has been compensating cases of vaccine-induced brain damage associated with autism for more than twenty years. This investigation suggests that officials at HHS, the Department of Justice and the Court of Federal Claims may have been aware of this association but failed to publicly disclose it. The study calls on Congress to thoroughly investigate the VICP, including a medical investigation of compensated claims of vaccine injury. This investigation calls on Congress to get answers to these critically important unanswered questions. http://www.ebcala.org/unanswered-questions Court of Federal Claims may have been aware of “This eBook is free because the truth should always be free” ~ Jeff Prager Chapter One The Business Of Manufacturing Biologics 1969 - 2015 If the global vaccination programs are causing epidemic incidents of death and disease, and they are, then it’s our responsibility to do something about it and revealing it using respected, independent peer review is a critically important component of that exposure. Here we provide basic insight into the highly complex and tricky business of manufacturing injectable products. Laboratory creation of safe injectable’s is a dirty business fraught with risk and unpredictable circumstances at every turn. Viruses mutate and new viruses appear out of nowhere to sully the product. Most, if not all, vaccine lots are contaminated. Enteroviruses, pestiviruses, DNA and RNA fragments, bovine and porcine viruses and other components of the virus manufacturing process remain in the final product. We’re told there’s no harm related to injecting these vagrant particles but the truth is, there’s absolutely no scientific data to support that claim. Mutating viruses with the high potential for undiscovered contamination will eventually win over man in his misguided attempt to repeatedly vaccinate every living human being. We’re each faced with almost 200 vaccines in our lifetime—128 antigen, adjuvant and excipient injections by adulthood if the vaccine schedule is followed—and that extraordinary volume of repeatedly injected material is now causing devastating populationwide effects. The increase in disease and disorder is readily apparent to anyone that looks. This chapter describes the dirty business of biological manufacturing. “A cell line (MDCK) of dog kidney origin grows on a glass surface as a mosaic of epithelium with many multicellular hemispherical vesicles. The cells lining the blisters actively secrete into the cyst cavities. Suspensions of these cells injected intravenously in the chick embryo produce brain metastases resembling adenocarcinoma.” Science • January 1969 Secretory activity and oncogenicity of a cell line (MDCK) derived from canine kidney A cell line (MDCK) of dog kidney origin grows on a glass surface as a mosaic of epithelium with many multicellular hemispherical vesicles. The cells lining the blisters actively secrete into the cyst cavities. Suspensions of these cells injected intravenously in the chick embryo produce brain metastases resembling adenocarcinoma. [Editors Note: The MDCK (NBL-2) (ATCC® CCL-34™) cell line has been used since 1958 to produce influenza and other vaccines] http://www.sciencemag.org/content/163/3866/472.long MDCK cell line: http://www.atcc.org/products/all/CCL-34.aspx “The phage contamination of virus vaccines and its possible consequences need further investigations.” Journal of Biological Standardization Volume 3, Issue 3, July 1975 Pages 307–308 Bacteriophage contamination in live poliovirus vaccine by Hedda Milch†, F. Fornosi† Abstract Bacteriophages lytic for Escherichia coli strains were isolated from two lots of oral poliomyelitis vaccine. From one ultracentrifuged sample bacteriophages of four different plaque patterns were demonstrable with E. coli C 3000 (2·8 × 102 PFU/ml) and E. coli (1·1 × 102 PFU/ml) as indicator strains. The phage contamination of virus vaccines and its possible consequences need further investigations. Purchase Price - $31.50 http://www.sciencedirect.com/science/article/pii/0092115775900347 “The determination of the total 5,224 base-pair DNA sequence of the virus SV40 has enabled us to locate precisely the known genes on the genome.” Nature • May 1978 Complete nucleotide sequence of SV40 DNA Fiers W, Contreras R, Haegemann G, Rogiers R, Van de Voorde A, Van Heuverswyn H, Van Herreweghe J, Volckaert G, Ysebaert M. Abstract The determination of the total 5,224 base-pair DNA sequence of the virus SV40 has enabled us to locate precisely the known genes on the genome. At least 15.2% of the genome is presumably not translated into polypeptides. Particular points of interest revealed by the complete sequence are the initiation of the early t and T antigens at the same position and the fact that the T antigen is coded by two non-contiguous regions of the genome; the T antigen mRNA is spliced in the coding region. In the late region the gene for the major protein VP1 overlaps those for proteins VP2 and VP3 over 122 nucleotides but is read in a different frame. The almost complete amino acid sequences of the two early proteins as well as those of the late proteins have been deduced from the nucleotide sequence. The mRNAs for the latter three proteins are presumably spliced out of a common primary RNA transcript. The use of degenerate codons is decidedly non-random, but is similar for the early and late regions. Codons of the type NUC, NCG and CGN are absent or very rare. https://www.ncbi.nlm.nih.gov/pubmed/205802 “Preservatives in multidose vaccine vials do not prevent short-term bacterial contamination.” Pediatrics • February 1985 Outbreaks of group A streptococcal abscesses following diphtheria-tetanus toxoid-pertussis vaccination Stetler HC, Garbe PL, Dwyer DM, Facklam RR, Orenstein WA, West GR, Dudley KJ, Bloch AB. Abstract Two outbreaks of group A streptococcal abscesses following receipt of diphtheria-tetanus toxoid-pertussis (DTP) vaccine from different manufacturers were reported to the Centers for Disease Control (CDC) in 1982. The clustering of the immunization times of cases, the isolation of the same serotype of Streptococcus from all cases in each outbreak, and the absence of reported abscesses associated with receipt of the same lots of vaccine in other regions of the country, suggest that each outbreak was probably caused by contamination of a single 15-dose vial of vaccine. The preservative thimerosal was present within acceptable limits in unopened vials from the same lot of DTP vaccine in each outbreak. Challenge studies indicate that a strain of Streptococcus from one of the patients can survive up to 15 days in DTP vaccine at 4 degrees C. Contamination of vials during manufacturing would have required survival of streptococci for a minimum of 8 months. Preservatives in multidose vaccine vials do not prevent short-term bacterial contamination. Options to prevent further clusters of streptococcal abscesses are discussed. The only feasible and cost-effective preventive measure now available is careful attention to sterile technique when administering vaccine from multidose vials. http://www.ncbi.nlm.nih.gov/pubmed/3881728 Lancet • April 1987 Possible Role Of Pestiviruses In Microcephaly Author Information BarbaraJ. Potts, JohnL. Sever, NancyR. Tzan, David Huddleston, GregoryA. Elder Infectious Diseases Branch National Institute of Neurological and Communicative Disorders and Stroke National Institutes of Health, Bethesda, Maryland 20892, USA Abstract “The background of this suggestion was that, first, although usually a pathogen in cattle and sheep, pestivirus infection can occur in children (Yolken et al. 1989). Second, an association has been reported between pestivirus exposure and microcephaly in newborns (Potts et al. 1987), which might be due to a generalized reduction in white matter bulk. Third, dysmyelination (Potts et al. 1985, Anderson et al. 1987b), frank brain damage (Hewicker-Trautwein and Trautwein 1994), and hypothyroxinemia (Anderson et al. 1987a) are characteristics of perinatal pestivirus infection in lamb models, are found in preterm infants (Leviton and Gilles 1996, Reuss et al. 1997), and are associated with each other among preterm infants (Den Ouden et al. 1996, Leviton et al. 1999). “ Report available for purchase http://www.thelancet.com/journals/lancet/article/PIIS0140-6736(87)90311-4/abstract “... an association has been reported between pestivirus exposure and microcephaly in newborns, which might be due to a generalized reduction in white matter bulk. Third, dysmyelination, frank brain damage and hypothyroxinemia are characteristics of perinatal pestivirus infection in lamb models, are found in preterm infants, and are associated with each other among preterm infants ...” “Vaccine produced on contaminated cells may in turn be contaminated, leading to seroconversion or disease in the vaccine.” Developments In Biological Standardization • 1991 Bovine viral diarrhea virus contamination of nutrient serum, cell cultures and viral vaccines Author information Levings RL1, Wessman SJ. National Veterinary Services Laboratories Animal and Plant Health Inspection Service USDA, Ames, IA 50010 Abstract Bovine viral diarrhea virus (BVDV) infection is common in the bovine population. Infection in utero leads to virus and antibody contamination of the fetal bovine serum used in cell cultures. These contaminants can interfere with diagnosis of viral infection. The high frequency of virus and antibody detection in individual animal or small pool samples suggests that any large pool of unscreened sera will be contaminated. Infection of cell cultures with BVDV can lead to interference with the growth of other viruses. Vaccine produced on contaminated cells may in turn be contaminated, leading to seroconversion or disease in the vaccine. The safety, purity, and efficacy of viral vaccines require BVDV testing of ingredients, cell substrates and final product. Methods for detection of BVDV in nutrient serum, cell cultures, seed viruses, and viral vaccines, and the frequency of their detection at the National Veterinary Services Laboratories are discussed. http://www.ncbi.nlm.nih.gov/pubmed/1665461 Developments In Biological Standardization • 1991 Viral contamination of fetal bovine serum used for tissue culture: risks and concerns Author information Erickson GA1, Bolin SR, Landgraf JG. Rollins Animal Disease Diagnostic Laboratory Raleigh, NC 27605 Abstract Four viral contaminants have been routinely detected in unprocessed and commercial lots of fetal bovine serum: bacteriophage, infectious bovine rhinotracheitis, parainfluenza-3 and bovine viral diarrhea virus (BVDV). Of those, BVDV is consistently present in a majority of commercial lots of fetal bovine serum. Methods for BVDV detection and removal are reviewed. The tentative role of an unclassified pestivirus in microcephaly of infants has been reported. Its significance remains uncertain. http://www.ncbi.nlm.nih.gov/pubmed/1665460 “Four viral contaminants have been routinely detected in unprocessed and commercial lots of fetal bovine serum: bacteriophage, infectious bovine rhinotracheitis, parainfluenza-3 and bovine viral diarrhea virus (BVDV). Of those, BVDV is consistently present in a majority of commercial lots of fetal bovine serum. Methods for BVDV detection and removal are reviewed. The tentative role of an unclassified pestivirus in microcephaly of infants has been reported. Its significance remains uncertain.” Journal Of Clinical Microbiology • June 1994 Evidence of pestivirus RNA in human virus vaccines Author information Harasawa R1, Tomiyama T. Animal Center for Biomedical Research Faculty of Medicine, University of Tokyo, Japan Abstract We examined live virus vaccines against measles, mumps, and rubella for the presence of pestivirus RNA or of pestiviruses by reverse transcription PCR. Pestivirus RNA was detected in two measles-mumps-rubella combined vaccines and in two monovalent vaccines against mumps and rubella. Nucleotide sequence analysis of the PCR products indicated that a modified live vaccine strain used for immunization of cattle against bovine viral diarrhea is not responsible for the contamination of the vaccines. http://www.ncbi.nlm.nih.gov/pubmed/?term=8077414 “Pestivirus RNA was detected in two measles-mumps-rubella combined vaccines and in two monovalent vaccines against mumps and rubella.” “Sixty-one % of the neoplastic patients positive for SV40 sequences had an age excluding exposure to SV40-contaminated polio vaccines, suggesting a contagious transmission of SV40.” Cancer Research • October 1996 SV40 early region and large T antigen in human brain tumors, peripheral blood cells, and sperm fluids from healthy individuals Author information Martini F1, Iaccheri L, Lazzarin L, Carinci P, Corallini A, Gerosa M, Iuzzolino P, Barbanti-Brodano G, Tognon M. Institute of Histology and General Embryology School of Medicine, University of Ferrara, Italy Abstract SV40 T antigen (Tag) coding sequences were detected by PCR amplification followed by Southern blot hybridization in human brain tumors and tumor cell lines, as well as in peripheral blood cells and sperm fluids of healthy donors. SV40 early region sequences were found in 83% of choroid plexus papillomas, 73% of ependymomas, 47% of astrocytomas, 33% of glioblastoma multiforme cases, 14% of meningiomas, 50% of glioblastoma cell lines, and 33% of astrocytoma cell lines and in 23% of peripheral blood cell samples and 45% of sperm fluids from normal individuals. None of the 13 normal brain tissues were positive for SV40 DNA, nor were seven oligodendrogliomas, two spongioblastomas, one neuroblastoma, one meningioma, or four neuroblastoma cell lines. Expression of SV40 early region was found by reverse transcription PCR, and SV40-specific Tag was detected by indirect immunofluorescence in glioblastoma cell lines. DNA sequence analysis, performed in four positive samples, confirmed that the amplified PCR products belong to the SV40 early region. Sixty-one % of the neoplastic patients positive for SV40 sequences had an age excluding exposure to SV40-contaminated polio vaccines, suggesting a contagious transmission of SV40. The possible role of SV40 Tag in the etiopathogenesis of human brain tumors and the spread of SV40 by horizontal infection in the human population are discussed. http://www.ncbi.nlm.nih.gov/pubmed/8841004 Biologicals • December 1996 Application of PCR for detection of mycoplasma DNA and pestivirus RNA in human live viral vaccines Author information Sasaki T1, Harasawa R, Shintani M, Fujiwara H, Sasaki Y, Horino A, Kenri T, Asada K, Kato I, Chino F. Department of Safety Research on Biologics National Institute of Health, Tokyo, Japan Abstract PCR techniques were applied for the detection of mycoplasma DNA and pestivirus RNA to 43 lots of live viral vaccines (measles, mumps, rubella, and oral poliomyelitis) produced by six manufacturers in Japan. Although mycoplasma DNA was not detected in any of the vaccines tested, pestivirus RNA was detected in 12 lots (28%). The incidence of contamination among the four viral vaccines was in the range of 20 to 37%, and the incidence among the six manufacturers varied from 0 to 56%. http://www.ncbi.nlm.nih.gov/pubmed/9088554 “The incidence of contamination among the four viral vaccines was in the range of 20 to 37%, and the incidence among the six manufacturers varied from 0 to 56%.” “These issues have received relatively little attention hitherto but are likely to achieve greater prominence as development of such preparations proceeds.” Developments In Biological Standardization • 1996 Reasons for instability of bacterial vaccines Author information Corbel MJ. Division of Bacteriology National Institute for Biological Standards & Control Potters Bar, United Kingdom Abstract Stability problems in relation to bacterial vaccines vary widely between different types of product. Killed whole cell bacterial vaccines including pertussis, cholera and typhoid vaccines generally show a high degree of stability of potency. Reversion to toxicity may occur in incompletely inactivated pertussis vaccines. Live attenuated vaccines such as BCG and Ty21a typhoid vaccines lose potency through loss of viability when exposed to adverse conditions. Both vaccines are susceptible to ultra violet radiation but Ty21a also has low thermal stability. Its fragility is probably a consequence of multiple mutations affecting structural and metabolic factors. Diphtheria and tetanus toxoids generally show high stability of potency. Reversion to toxicity may occur if the toxoiding process is inadequate. Decline in potency may result from exposure to adverse conditions, such as freezing, that affect the interaction with the adjuvant. Similar problems may be encountered with purified subunit vaccines such as acellular pertussis preparations. Some components, in particular pertussis toxin and filamentous haemagglutinin, show inherent low stability and degrade on storage at refrigerator temperatures unless stabilized by a protein cross-linking agent. Bacterial proteases carried over from the cell cultures may also be responsible for degradation of purified components. Purified bacterial polysaccharides usually show high stability if freeze-dried under appropriate conditions. Catalytic degradation may occur however, if the stabilizers are of inadequate purity. Polysaccharide-protein conjugates such as Haemophilus influenzae b (Hib) polyribosylribityl phosphate-protein conjugates show high thermal stability if freeze dried. In the liquid state, such conjugates tend to degrade by hydrolysis of the polysaccharide chains. Combined vaccines may present special stability problems because of the interaction of the various components in the liquid state. It can be difficult to freeze-dry some components of such vaccines, particularly aluminium hydroxide-adsorbed diphtheria-tetanus-pertussis (DTP) components. Slow release vaccines based on polyglycolide-factolide microspheres may show suboptimal stability of encapsulated antigen under both in vitro conditions as a result of gradual acidification through polymer hydrolysis. Vaccines based on the use of live recombinant strains to express heterologous protective antigens may present special stability problems. Apart from the carrier strains, heterologous genes carried on plasmids may be subject to spontaneous deletion under adverse conditions. These issues have received relatively little attention hitherto but are likely to achieve greater prominence as development of such preparations proceeds. http://www.ncbi.nlm.nih.gov/pubmed/8854008 Monaldi Archives For Chest Disease • April 1998 Simian virus 40 and human cancer Author information Mutti L1, Carbone M, Giordano GG, Giordano A. S. Maugeri Foundation, IRCCS Rehabilitation Institute of Veruno/Varallo S., Italy Abstract Deoxyribonucleic acid (DNA) oncoviruses can induce neoplastic transformation by interfering with proliferative proteins. Simian virus 40 (SV40) has been shown to induce brain tumors, osteosarcoma, lymphoid tumors and malignant mesothelioma in hamsters and SV40-like DNA sequences corresponding to the Rb-pocket binding domain of SV40 Tantigen (Tag) have been detected in the same human tumors. Since only a small percentage of people exposed to asbestos fibers develop a malignant mesothelioma, SV40 has been suspected to co-operate with the fibers in the neoplastic transformation or even to itself induce the onset of malignant mesothelioma in patients without expositive history. The mechanism that seems to be involved in the SV40-induced carcinogenesis process is mediated by interaction of Tag, both with p53 and Rb proteins, leading to their functional inactivation that is responsible for the removal of their inhibitory cell cycle effect which determines the increase of the number of cells entering the G1-S phase. Up to now the source of SV40 human infections has not yet been completely identified even though administration from 1957-1965 of SV40 contaminated polio vaccines is highly suspected. Horizontal infection by sexual transmission has been also hypothesized. Due to the important public health implications further investigations are required in order to establish both the source and the carcinogenetic role of simian virus 40 in humans. http://www.ncbi.nlm.nih.gov/pubmed/9689809 “Up to now the source of SV40 human infections has not yet been completely identified even though administration from 1957-1965 of SV40 contaminated polio vaccines is highly suspected. Horizontal infection by sexual transmission has been also hypothesized.” Monaldi Archives Of Chest Disease • April 1998 The biological activities of simian virus 40 large-T antigen and its possible oncogenic effects in humans Author information Matker CM1, Rizzo P, Pass HI, Di Resta I, Powers A, Mutti L, Kast WM, Carbone M. Cardinal Bernardin Cancer Center Loyola University of Chicago Maywood, IL 60153, USA Abstract Simian virus 40 (SV40) is an oncogenic virus which induces tumors in hamsters and transforms human cells in tissue culture. Between 1955 and 1963, polio vaccines and adenovaccines were contaminated with SV40; therefore, millions of people were exposed to this oncogenic virus. The SV40 proteins responsible for in vivo oncogenesis and in vitro cell transformation are encoded by the early region of the virus. These proteins are called T (tumor) antigens (Tags), because animals with tumors induced by SV40 have antibodies against these viral proteins. Recently, we and other research laboratories have found SV40 in specific types of human tumors: mesothelioma, ependymoma and choroid plexus tumors, osteosarcoma and sarcoma. The same tumor types will develop in hamsters which have been injected systemically with SV40. SV40 causes cell transformation in tissue culture and tumors in animals, because SV40 Tag binds and inactivates the cellular tumor suppressor gene products, Rb and p53. We found that SV40 Tag binds p53 and Rb in human mesotheliomas, possibly contributing to the malignant phenotype. http://www.ncbi.nlm.nih.gov/pubmed/9689808 “Between 1955 and 1963, polio vaccines and adenovaccines were contaminated with SV40; therefore, millions of people were exposed to this oncogenic virus.” Monaldi Archives For Chest Diseases • April 1998 The detection of simian virus 40 in human tumors by polymerase chain reaction Author information Rizzo P1, Di Resta I, Powers A, Matker CM, Zhang A, Mutti L, Kast WM, Pass H, Carbone M. Loyola University of Chicago Cardinal Bernardin Cancer Center Maywood, IL, USA Abstract Simian virus (SV) 40 is a deoxyribonucleic acid (DNA) virus that induces mesotheliomas, ependymomas, bone tumors, and lymphomas in hamsters. In recent years SV40 sequences have been detected in approximately 60% of mesotheliomas and ependymomas, in 33% of bone tumors and sarcomas, and in 13% of lymphomas. Because the amount of human specimens available for molecular studies is usually minimal, the method most commonly used to demonstrate SV40 in human specimens is the polymerase chain reaction (PCR). PCR is a highly sensitive and useful technique. In the PCR reaction, different sets of primers are used for targeting different regions of DNA. The regions of the SV40 genome targeted by PCR include the large T-antigen, the small t-antigen, the origin of replication, and viral protein-1 capsid protein. The use of these different sets of primers to test human tumor specimens for SV40 produce a different percentage of positive results. This is because these experiments revealed that some primers are more specific than others which may also detect sequences belonging to other DNA papovaviruses. Therefore, the combined use of different sets of primers is recommended when it is important to distinguish SV40 from other related papovaviruses such as BK and JC, which can also be occasionally present in human cells. Furthermore, these experiments demonstrated that polymerase chain reaction analyses for simian virus 40 can be performed better and easier when using deoxyribonucleic acid extracted from fresh and/or frozen tissue. Deoxyribonucleic acid from paraffin embedded specimens should not be used routinely for simian virus 40 testing because of the high risk of obtaining false negative results. However, these paraffin derived deoxyribonucleic acids can be used reliably in molecular laboratories specialized in these type of analyses. This paper describes the methods that we have developed to test simian virus 40 in human specimens. http://www.ncbi.nlm.nih.gov/pubmed/?term=9689810 “This paper describes the methods that we have developed to test simian virus 40 in human specimens.” BioDrugs • July 1998 Practical considerations in converting from plasma-derived to recombinant hepatitis B vaccines Author information Lee PI1, Lee CY. Department of Paediatrics National Taiwan University Hospital Taipei, Taiwan Abstract Plasma-derived and recombinant vaccines have been developed to prevent hepatitis B virus infections. Both types of vaccine perform very well with respect to safety, immunogenicity and protective efficacy. The protection afforded by both types of vaccine is satisfactory for at least 5 to 10 years after vaccination, and a further booster dose is not necessary during this period. However, the plasma-derived vaccine is costly to produce and there is an unjustified but prevalent fear that it may be contaminated by potential pathogens. The supply of human plasma for production of the plasma-derived vaccine cannot be assured once use of hepatitis B vaccines becomes universal. It is therefore inevitable that the recombinant vaccine will replace the plasma-derived vaccine. If necessary, both vaccines can be used in combination. Future directions for hepatitis B vaccine development include: determination of the need for incorporation of pre-S gene products to enhance immunogenicity; defining a practical strategy to combat the problem of escape mutants after vaccination; and development of combination vaccines containing other inactivated antigens to allow complete immunisation against several diseases with a minimal number of injections. http://www.ncbi.nlm.nih.gov/pubmed/?term=18020583 “the plasma-derived vaccine is costly to produce and there is an unjustified but prevalent fear that it may be contaminated by potential pathogens. The supply of human plasma for production of the plasma-derived vaccine cannot be assured once use of hepatitis B vaccines becomes universal.” Journal Of The National Cancer Institute • January 1999 Cell and molecular biology of simian virus 40: implications for human infections and disease Author information Butel JS1, Lednicky JA. Division of Molecular Virology Baylor College of Medicine Houston, TX 77030-3498, USA jbutel@bcm.tmc.edu Abstract Simian virus 40 (SV40), a polyomavirus of rhesus macaque origin, was discovered in 1960 as a contaminant of polio vaccines that were distributed to millions of people from 1955 through early 1963. SV40 is a potent DNA tumor virus that induces tumors in rodents and transforms many types of cells in culture, including those of human origin. This virus has been a favored laboratory model for mechanistic studies of molecular processes in eukaryotic cells and of cellular transformation. The viral replication protein, named large T antigen (T-ag), is also the viral oncoprotein. There is a single serotype of SV40, but multiple strains of virus exist that are distinguishable by nucleotide differences in the regulatory region of the viral genome and in the part of the T-ag gene that encodes the protein’s carboxyl terminus. Natural infections in monkeys by SV40 are usually benign but may become pathogenic in immunocompromised animals, and multiple tissues can be infected. SV40 can replicate in certain types of simian and human cells. SV40-neutralizing antibodies have been detected in individuals not exposed to contaminated polio vaccines. SV40 DNA has been identified in some normal human tissues, and there are accumulating reports of detection of SV40 DNA and/or T-ag in a variety of human tumors. This review presents aspects of replication and cell transformation by SV40 and considers their implications for human infections and disease pathogenesis by the virus. Critical assessment of virologic and epidemiologic data suggests a probable causative role for SV40 in certain human cancers, but additional studies are necessary to prove etiology. http://www.ncbi.nlm.nih.gov/pubmed/9923853 “Critical assessment of virologic and epidemiologic data suggests a probable causative role for SV40 in certain human cancers, but additional studies are necessary to prove etiology.” “These data suggest that there may be an increased incidence of certain cancers among the 98 million persons exposed to contaminated polio vaccine in the U.S.” Anticancer Research • May 1999 Cancer risk associated with simian virus 40 contaminated polio vaccine Author information Fisher SG1, Weber L, Carbone M. Cancer Cause and Prevention Program Loyola University Medical Center Maywood, Illinois 60153, USA Abstract BACKGROUND The presence of SV40 in monkey cell cultures used in the preparation of the polio vaccine from 1955 through 1961 is well documented. Investigations have consistently demonstrated the oncogenic behavior of SV40 in animal models. Early epidemiologic studies were inadequate in demonstrating an increase in cancer incidence associated with contaminated vaccine. Recently, investigators have provided persuasive evidence that SV40 is present in human ependymomas, choroid plexus tumors, bone tumors, and mesotheliomas, however, the etiologic role of the virus in tumorigenesis has not been established. MATERIALS AND METHODS Using data from SEER, we analyzed the incidence of brain tumors, bone tumors, and mesotheliomas from 1973-1993 and the possible relationship of these tumors with the administration of the SV40 contaminated vaccine. RESULTS Our analysis indicates increased rates of ependymomas (37%), osteogenic sarcomas (26%), other bone tumors (34%) and mesothelioma (90%) among those in the exposed as compared to the unexposed birth cohort. CONCLUSIONS These data suggest that there may be an increased incidence of certain cancers among the 98 million persons exposed to contaminated polio vaccine in the U.S.; further investigations are clearly justified. http://www.ncbi.nlm.nih.gov/pubmed/10472327 Cancer Research • December 1999 Unique strains of SV40 in commercial poliovaccines from 1955 not readily identifiable with current testing for SV40 infection Author information Rizzo P1, Di Resta I, Powers A, Ratner H, Carbone M. Loyola University Medical Center, Cardinal Bernardin Cancer Center Department of Pathology, Maywood, Illinois 60153, USA Abstract SV40 was first identified as a contaminant of poliovaccines used from 1955 until 1963. Recently, SV40 has been detected in several human tumors. The virus detected in human tumors often contained only one 72-bp enhancer in the regulatory region, in contrast to the SV40 originally isolated from poliovaccines, which contained two 72-bp enhancers. The origin of viruses with one 72-bp enhancer in humans was unknown, because it was thought that these viruses were not present in poliovaccines. It was also thought that all poliovaccine vials produced from 1955 until 1963 had been discarded, thus the possibility that one 72-bp virions contaminated those vials could not be tested. We unexpectedly obtained what appear to be the last available vials of poliovaccine produced in 1955. In these vials, we detected and sequenced SV40 containing only one 72-bp enhancer in the regulatory region. The tissue culture cytopathic test currently used in the United States to screen oral poliovaccines was designed to detect rapidly proliferating SV40 virions containing two 72-bp enhancers. We found that this test is not sensitive enough to detect low amounts of the slow-replicating SV40 virions containing one 72-bp enhancer. This virus was easily detected in the same cells by immunostaining and PCR. Twelve current vials of poliovaccines tested uniformly negative for SV40, suggesting that the precaution of preparing poliovaccines from kidneys obtained from monkeys bred in isolated colonies prevented SV40 contamination. Our data demonstrate that humans were exposed to SV40 viruses with both one 72-bp enhancer and two 72-bp enhancers SV40 through contaminated vaccines. Our data also suggest that instead of cytopathic tests, immunohistochemical and/or molecular studies should be used to screen poliovaccines for SV40 to completely eliminate the risk of occasional contamination. https://www.ncbi.nlm.nih.gov/pubmed/10626798 “SV40 was first identified as a contaminant of poliovaccines used from 1955 until 1963. Recently, SV40 has been detected in several human tumors.” “... in litigation involving the Lederle oral polio vaccine, the manufacturer’s internal documents failed to reveal such removal in all of the seeds.” Anticancer Research • November 2000 Oral polio vaccine and human cancer: a reassessment of SV40 as a contaminant based upon legal documents Author information Kops SP. stankops@aol.com Abstract To date, the scientific literature and research examining SV40 and cancer-related diseases has been based upon an assumption that SV40 was not present in any poliovirus vaccine administered in the United States and was removed from the killed polio vaccine by 1963. The basis for this presumption has been that the regulations for live oral polio vaccine required that SV40 be removed from the seeds and monovalent pools ultimately produced in the manufacturing process. The Division of Biologic Standards permitted an additional two tissue culture passages--from three to five--in order to allow manufacturers the ability to remove this contaminant from the oral poliovirus vaccines then awaiting licensure. The confirmation of the removal by one drug manufacturer, Lederle, has been made public at an international symposium in January 1997, where its representatives stated that all of Lederle’s seeds had been tested and screened to assure that it was free from SV40 virus. However, in litigation involving the Lederle oral polio vaccine, the manufacturer’s internal documents failed to reveal such removal in all of the seeds. The absence of confirmatory testing of the seeds, as well as testimony of a Lederle manager, indicate that this claim of removal of SV40 and the testing for SV40 in all the seeds cannot be fully substantiated. These legal documents and testimony indicate that the scientific community should not be content with prior assumptions that SV40 could not have been in the oral polio vaccine. Only further investigation by outside scientific and independent researchers who can review the test results claimed in the January 1997 meeting and who can conduct their own independent evaluations by testing all the seeds and individual mono-valent pools will assure that SV40 has not been present in commercially sold oral poliovirus vaccine manufactured by Lederle. http://www.ncbi.nlm.nih.gov/pubmed/11205211 Journal Of Veterinary Medical Science • July 2001 Genotypes of pestivirus RNA detected in live virus vaccines for human use Author information Giangaspero M1, Vacirca G, Harasawa R, Büttner M, Panuccio A, De Giuli Morghen C, Zanetti A, Belloli A, Verhulst A. Institute of Special Pathology and Veterinary Medical Clinic Faculty of Veterinary Medicine, The University of Milan, Italy Abstract Live virus vaccines for human use, 29 monovalent vaccines against measles, mumps, rubella or polio, eight polyvalent vaccines against measlesmumps-rubella and one bacterial polyvalent vaccine against Streptococcus pneumoniae, were tested by reverse transcriptase-nested PCR for the presence of petivirus or pestivirus RNA. Twenty-four samples were selected from European manufacturers, ten were from U.S.A. and four from Japan. Five (13.1%) out of 38 tested samples were positive for pestivirus RNA. Three vaccines (rubella and two measles) were from Europe and two (mumps and rubella) from Japan. The 5’-untranslated genomic region of the contaminant pestivirus RNA were amplified by reverse transcription-PCR and sequenced. Analyses based on primary nucleotide sequence homology and on secondary structures, characteristic to genotypes, revealed that the cDNA sequences belonged to bovine viral diarrhea virus (BVDV). A cDNA sequence, detected from one measles sample, belonged to BVDV-1b genotype. Pestiviral cDNA detected from the Japanese mumps and rubella vaccine samples, belonged to the BVDV genotypes 1a and 1c, respectively. Analysis on two cDNA sequences detected from measles and rubella vaccine samples from Europe showed their appurtenance to a new genotype, BVDV-1d. These findings indicate that contamination by animal pestivirus may occur in biological products for human use. http://www.ncbi.nlm.nih.gov/pubmed/11503899 “Twenty-four samples were selected from European manufacturers, ten were from U.S.A. and four from Japan. Five (13.1%) out of 38 tested samples were positive for pestivirus RNA. Three vaccines (rubella and two measles) were from Europe and two (mumps and rubella) from Japan.” Vaccine • October 2001 What are the limits of adjuvanticity? Author information Del Giudice G1, Podda A, Rappuoli R. IRIS Research Center, Chiron SpA, Via Fiorentina 1, 53100, Siena, Italy Abstract Vaccines developed traditionally following empirical approaches have often limited problems of immunogenicity, probably due to the low level of purity of the active component(s) they contain. The application of new technologies to vaccine development is leading to the production of purer (e.g. recombinant) antigens which, however, tend to have a poorer immunogenicity as compared to vaccines of the previous generation. The search for new vaccine adjuvants involves issues related to their potential limits. Since the introduction of aluminium salts as vaccine adjuvants more than 70 years ago, only one adjuvant has been licensed for human use. The development of some of these new vaccine adjuvants has been hampered by their inacceptable reactogenicity. In addition, some adjuvants work strongly with some antigens but not with others, thus, limiting their potentially widespread use. The need to deliver vaccines via alternative routes of administration (e.g. the mucosal routes) in order to enhance their efficacy and compliance has set new requirements in basic and applied research to evaluate their efficacy and safety. Cholera toxin (CT) and labile enterotoxin (LT) mutants given along with intranasal or oral vaccines are strong candidates as mucosal adjuvants. Their potential reactogenicity is still matter of discussions, although available data support the notion that the effects due to their binding to the cells and those due to the enzymatic activity can be kept separated. Finally, adjuvanticity is more often evaluated in terms of antigen-specific antibody titers induced after parenteral immunization. It is known that, in many instances, antigen-specific antibody titers do not correlate with protection. In addition, very little is known on parameters of cell-mediated immunity which could be considered as surrogates of protection. Tailoring of new adjuvants for the development of vaccines with improved immunogenicity/efficacy and reduced reactogenicity will represent one of the major challenges of the ongoing vaccine-oriented research. http://www.ncbi.nlm.nih.gov/pubmed/11587808 “Vaccines developed traditionally following empirical approaches have often limited problems of immunogenicity, probably due to the low level of purity of the active component(s) they contain.” American Journal Of Health-System Pharmacy • February 2002 Implications of prion-induced diseases for animal-derived pharmaceutical products Author information Erstad BL. Department of Pharmacy Practice and Science College of Pharmacy, University of Arizona 1703 E. Mabel Street, Tucson, AZ 85721-0207, USA Abstract The implications of prion-induced diseases for the use of medications that theoretically could harbor the infectious pathogens are discussed. Prions have been identified as protein particles that lack nucleic acids. There is evidence that prions cause the transmissible neurodegenerative diseases known as transmissible spongiform encephalopathies. Of these diseases, bovine spongiform encephalopathy (BSE) and the human spongiform encephalopathy to which it has been linked, new variant Creutzfeldt-Jakob disease (CJD), have generated the most attention. The first cases of new variant CJD appeared in Britain in the mid-1990s. Ingestion of prion-infected beef remains the only known cause of new variant CJD. No cases of BSE or new variant CJD have been documented in the United States. The time from exposure to the development of clinical sequelae appears to be about 10 years. The median duration of illness is 14 months, and the outcome is invariably death. There is no treatment; currently the only available approach is prevention. There is no reliable method of predicting the number of new cases that might occur because of lack of definitive information on the efficiency of transmission from animals to humans and the number of people currently infected and at risk for infection. The infectivity of medications and plasma fractionation products containing material from cattle with BSE is unknown, but the risk is believed to be very low. No cases of such transmission have been identified. Guidelines to keep the risk of transmission via medications low have been promulgated by FDA, and further research is warranted. There have been no reports of medications or plasma fractionation products being contaminated with the prions that cause new variant CJD. Ongoing vigilance and research are appropriate, however. http://www.ncbi.nlm.nih.gov/pubmed/?term=11862637 “The infectivity of medications and plasma fractionation products containing material from cattle with BSE is unknown, but the risk is believed to be very low.” “This analysis confirmed higher concentrations of endotoxin in whole-cell DTP vaccines compared with DTaP or DT vaccines. As high concentrations of endotoxin may be correlated with a higher incidence of adverse events ...” Annals Of Pharmacotherapeutics • May 2002 Clinical implications of endotoxin concentrations in vaccines Author information Geier DA1, Geier MR. Genetic Centers of America, 14 Redgate Court, Silver Spring, MD 20905-5726, USA Abstract BACKGROUND A previous study suggested that high concentrations of endotoxin may be present in whole-cell diphtheria/tetanus/pertussis (DTP) vaccine, and the scientific literature contains many studies examining the reactivity of whole-cell DTP vaccine. The medical and scientific communities have previously reported that the presence of endotoxin in commercial vaccines may have negative effects on vaccine recipients. OBJECTIVE To determine the endotoxin concentrations in whole-cell DTP, acellular DTP(DTaP), and DT vaccines and determine the clinical experience with each vaccine. METHODS To study the endotoxin concentrations in vaccines, the Limulus amebocyte lysate (LAL) assay was used. The vaccines analyzed with the LAL assay were whole-cell DTP vaccine lots manufactured by Connaught, Lederle, the Michigan and Massachusetts Departments of Health, and Wyeth; DTaP vaccine lots manufactured by Merieux and Takeda; and DT vaccine lots manufactured by Wyeth and Lederle. The incidence of adverse reactions following whole-cell DTP, DTaP, and DT vaccines were determined based on analysis of the Vaccine Adverse Events Reporting System (VAERS) database. RESULTS The results of the LAL assay showed that whole-cell DTP vaccines contained considerably more endotoxin than either DTaP or DT vaccines. The VAERS showed that statistically significantly more adverse reactions were associated with whole-cell DTP vaccine than DTaP or DT vaccines. CONCLUSIONS This analysis confirmed higher concentrations of endotoxin in whole-cell DTP vaccines compared with DTaP or DT vaccines. As high concentrations of endotoxin may be correlated with a higher incidence of adverse events, the switch from whole-cell DTP to DTaP for routine vaccinations in the US seems well justified. http://www.ncbi.nlm.nih.gov/pubmed/?term=11978151 Anticancer Research • November 2002 SV40 in human tumors: new documents shed light on the apparent controversy Author information MacLachlan DS. MacLachlan Law Offices LLC 487 Goffle Road Ridgewood, New Jersey 07450, USA Abstract BACKGROUND Presently there are over 61 reports from 49 different laboratories that have detected SV40 in human mesothelioma, lymphoma, brain and bone tumors, versus three reports (two from Dr. Shah’s laboratory who performed his study under contract from Dr. Strickler at the Viral Epidemiology Branch (VEB) National Cancer Institute (USA) that have failed to detect SV40 in some of these same tumor types. To address whether the negative reports were caused by lack of sensitivity of the technique used in Shah’s laboratory, or whether the positive reports were caused by contamination within the greater number of laboratories reporting SV40 detection, two multi-center studies were conducted. The first study, Testa et al., 1998, confirmed the presence of SV40 in mesothelioma. The second study, Strickler et al., produced irregular results indicating that: (a) though never reporting SV40 detection to date, Dr. Shah’s laboratory reported the most sensitive technique of all participating laboratories; (b) all participating laboratories essentially agreed the DNA extracts provided under contract to the VEB were negative; (c) all participating laboratories agreed one-half of the negative controls prepared by the VEB contract laboratory were positive due to contamination by the contract laboratory. In addition, (d) the authors concluded the laboratories previously detecting SV40 in human tissue specimens were not reporting contamination. Scientists in the field have since debated how these seemingly contradictory results were produced. MATERIALS During the course of litigation representing patients with SV40-positive tumors, the author obtained correspondence among members of the VEB multi-center study and sworn testimony by Dr. Shah that address some of the incongruities of the study. RESULTS Dr. Shah’s laboratory technique used in 1996 was apparently not sufficiently sensitive to detect SV40 in human tumors. When this became apparent, during unilateral pre-trial testing of positive controls by Dr. Shah, the study coordinator of the VEB, Dr. Strickler, apparently compromised the blinded nature of the study and allowed Dr. Shah to modify and improve his technique. When one of the participating laboratories questioned irregularities in the data from Dr. Shah’s laboratory and directly questioned Dr. Strickler, the study organizer, about the potential irregularity, Dr. Strickler and Dr. Shah offered letters stating that such irregularities had not occurred and re-confirmed that they had not deviated from the standard protocol. CONCLUSION The facts indicating that Dr. Shah’s laboratory technique was not sufficiently sensitive to detect SV40 were not made available to the other laboratories participating in the study and were not published. Instead, according to Dr. Shah’s testimony, Dr. Strickler, the VEB multi-center study coordinator, compromised the masked positive controls and knowingly permitted Dr. Shah to re-test and adjust his technique during pre-trial testing. The actual negative pre-trial test results were never published alongside the published trial results indicating Dr. Shah’s laboratory had the most sensitive technique to detect SV40 among the nine participating laboratories. http://www.ncbi.nlm.nih.gov/pubmed/12552945 “When one of the participating laboratories questioned irregularities in the data from Dr. Shah’s laboratory and directly questioned Dr. Strickler, the study organizer, about the potential irregularity, Dr. Strickler and Dr. Shah offered letters stating that such irregularities had not occurred and re-confirmed that they had not deviated from the standard protocol.” [it was found that they had lied] Biologicals • December 2002 Detection and characterization of pestivirus contaminations in human live viral vaccines Author information Studer E1, Bertoni G, Candrian U. Official Medicines Control Laboratory Biologika and R&D Unit Division of Biologicals, Swiss Federal Office of Public Health P.O. Box 3003, Bern, Switzerland Abstract In view of the use of potentially contaminated foetal calf serum (FCS) in cell cultures pestiviruses may be present in live viral vaccines. Thirty-six lots of human live viral vaccines produced by three manufacturers were tested for the presence of pestiviruses. Bovine viral diarrhoea virus (BVDV) RNA was detected in 33% of the vaccine lots. All positive results were caused by the mumps component of a single manufacturer. Partial sequences of the 5’ untranslated region of BVD viral RNA were determined. The sequences were closely related to that of the NADL strain of BVDV. The amount of BVDV RNA in the vaccines was determined by real-time RT-PCR using the LightCycler. Between 3.3*10(2) and 6.2*10(5) RNA copies per dose were found to be present in the vaccine samples.Additionally, culture tests were done with FCS and human diploid cells used in the vaccine production of the manufacturer whose vaccines were positive by PCR. All attempts to detect virus antigen in MRC-5 human diploid cells or to infect these cells with BVDV failed. This suggests that BVDV RNA detected in human live viral vaccines represents passive carry over of BVDV from contaminated FCS rather than active virus replication in human diploid cells. Our results indicate that contamination with BVDV of FCS used in vaccine production does not appear to be of immediate concern to human health. Furthermore, our results indicate that gamma-irradiation of FCS destroys BVDV particles and is also effective in preventing the presence of BVDV RNA in the vaccines. http://www.ncbi.nlm.nih.gov/pubmed/12421586 “This suggests that BVDV RNA detected in human live viral vaccines represents passive carry over of BVDV from contaminated foetal calf serum rather than active virus replication in human diploid cells. Our results indicate that contamination with BVDV of foetal calf serum used in vaccine production does not appear to be of immediate concern to human health.” Institute of Medicine (US) Immunization Safety Review Committee • 2002 Immunization Safety Review: SV40 Contamination of Polio Vaccine and Cancer Washington, DC National Academies Press Editors Stratton K, Almario DA, McCormick MC. Excerpt Some of the polio vaccine administered from 1955–1963 was contaminated with a virus, called simian virus 40 (SV40). The virus came from the monkey kidney cell cultures used to produce the vaccine. Most, but not all, of the contamination was in the inactivated polio vaccine (IPV). Once the contamination was recognized, steps were taken to eliminate it from future vaccines. Researchers have long wondered about the effects of the contaminated vaccine on people who received it. Although SV40 has biological properties consistent with a cancer-causing virus, it has not been conclusively established whether it might have caused cancer in humans. Studies of groups of people who received polio vaccine during 1955–1963 provide evidence of no increased cancer risk. However, because these epidemiologic studies are sufficiently flawed, the Institute of Medicine’s Immunization Safety Review Committee concluded that the evidence was inadequate to conclude whether or not the contaminated polio vaccine caused cancer. In light of the biological evidence supporting the theory that SV40-contamination of polio vaccines could contribute to human cancers, the committee recommends continued public health attention in the form of policy analysis, communication, and targeted biological research. http://www.ncbi.nlm.nih.gov/pubmed/?term=25057632 Full Report http://www.ncbi.nlm.nih.gov/books/NBK221113/ “ In light of the biological evidence supporting the theory that SV40-contamination of polio vaccines could contribute to human cancers, the committee recommends continued public health attention in the form of policy analysis, communication, and targeted biological research.” Leukemia & Lymphoma • 2003 Association between SV40 and non-Hodgkin’s lymphoma Author information Butel JS1, Vilchez RA, Jorgensen JL, Kozinetz CA. Department of Molecular Virology and Microbiology Baylor College of Medicine, Mail Stop BCM385, One Baylor Plaza Houston, TX 77030, USA jbutel@bcm.tmc.edu Abstract Millions of people worldwide were inadvertently exposed to live simian virus 40 (SV40) between 1955 and 1963 through immunization with SV40-contaminated polio vaccines. Although the prevalence of SV40 infections in humans is not known, numerous studies suggest that SV40 is a pathogen resident in the human population today. SV40 is a potent DNA tumor virus that is known to induce primary brain cancers, bone cancers, mesotheliomas, and lymphomas in laboratory animals. SV40 oncogenesis is mediated by the viral large tumor antigen (T-ag), which inactivates the tumor suppressor proteins p53 and pRb. During the last decade, independent studies using different molecular biology techniques have shown the presence of SV40 DNA, T-ag, or other viral markers in primary human brain and bone cancers and malignant mesotheliomas. Evidence suggests that there may be geographic differences in the frequency of these virus-positive tumors. Recent large independent controlled studies have shown that SV40 T-ag DNA is significantly associated with human non-Hodgkin’s lymphoma (NHL). In our study, we analyzed systemic NHL from 76 HIV-1-positive and 78 HIV-1-negative patients, and nonmalignant lymphoid samples from 79 HIV-1-positive and 107 HIV-1-negative patients without tumors; 54 colon and breast carcinoma samples served as cancer controls. We used polymerase chain reaction (PCR) followed by Southern blot hybridization and DNA sequence analysis to detect DNAs of polyomaviruses and herpesviruses. SV40-specific DNA sequences were detected in 64 (42%) of 154 NHL, none of 186 nonmalignant lymphoid samples, and none of 54 control cancers. For NHL from HIV-1-positive patients, 33% contained SV40 DNA and 39% Epstein Barr virus (EBV) DNA, whereas NHLs from HIV-1-negative patients were 50% positive for SV40 and 15% positive for EBV. Few tumors were positive for both SV40 and EBV. Human herpesvirus type 8 was not detected. SV40 sequences were found most frequently in diffuse large B cell and follicular-type lymphomas. We conclude that SV40 is significantly associated with some types of NHL and that lymphomas should be added to the types of human cancers associated with SV40. http://www.ncbi.nlm.nih.gov/pubmed/15202523 “Millions of people worldwide were inadvertently exposed to live simian virus 40 (SV40) between 1955 and 1963 through immunization with SV40-contaminated polio vaccines. We conclude that SV40 is significantly associated with some types of non-Hodgkins Lymphoma and that lymphomas should be added to the types of human cancers associated with SV40.” Cancer Epidemiological Biomarkers And Prevention • May 2003 Serum antibodies to JC virus, BK virus, simian virus 40, and the risk of incident adult astrocytic brain tumors Author information Rollison DE1, Helzlsouer KJ, Alberg AJ, Hoffman S, Hou J, Daniel R, Shah KV, Major EO. Department of Epidemiology The Johns Hopkins Bloomberg School of Public Health Baltimore, Maryland 21205, USA Abstract Genomic sequences of the human polyomaviruses, JC virus (JCV) and BK virus (BKV), and simian virus 40 (SV40) have been reported from several types of human brain tumors, but there have been no population-based seroepidemiologic studies to evaluate the association between polyomavirus infection and brain tumors. We conducted a case-control study, nested within a prospective cohort, to investigate the association between antibodies to JCV, BKV, and SV40, as measured in serum collected 1-22 years before diagnosis and incident primary malignant brain tumors. Brain tumor cases (n = 44) and age-, gender-, and race-matched controls (n = 88) were identified from participants of two specimen banks in Washington County, Maryland. IgG antibodies to the capsid proteins of JCV and BKV were assessed using ELISAs. SV40-neutralizing antibodies were measured using plaque neutralization assays. Similar to the general population, the prevalence of JCV and BKV infection was high in our study population (77 and 85%, respectively). Antibodies to SV40 were less prevalent (11%). The odds ratio for subsequent brain tumor development was 1.46 [95% confidence interval (CI), 0.61-3.5] for JCV, 0.66 for BKV (95% CI, 0.221.95), and 1.00 for SV40 (95% CI, 0.30-3.32). Given the high prevalence of JCV and BKV infections and the millions who were potentially exposed to SV40 through contaminated polio vaccines, future studies should attempt to replicate these findings. http://www.ncbi.nlm.nih.gov/pubmed/12750243 “Given the high prevalence of JCV and BKV infections and the millions who were potentially exposed to SV40 through contaminated polio vaccines, future studies should attempt to replicate these findings.” American Journal Of Medicine • June 2003 Simian virus 40 in human cancers Author information Vilchez RA1, Kozinetz CA, Arrington AS, Madden CR, Butel JS. Department of Medicine, Section of Infectious Diseases Baylor College of Medicine, BCM 286, Room N1319 One Baylor Plaza, Houston, TX 77030, USA rvilchez@bcm.tmc.edu Abstract BACKGROUND Many studies have reported the presence of simian virus 40 (SV40) deoxyribonucleic acid (DNA) or protein in human brain tumors and bone cancers, malignant mesothelioma, and non-Hodgkin’s lymphoma. However, the small samples and lack of control groups in some reports have made it difficult to assess their reliability. METHODS Studies were included in this analysis if they met the following criteria: original studies of patients with primary brain tumors and bone cancers, malignant mesothelioma, or non-Hodgkin’s lymphoma; the investigation of SV40 was performed on primary cancer specimens; the analysis included a control group; and the same technique was used for cases and controls. Included reports were published from 1975 to 2002. RESULTS Thirteen studies fulfilled the criteria for the investigation of primary brain cancers (661 tumors and 482 control samples). Specimens from patients with brain tumors were almost four times more likely to have evidence of SV40 infection than were those from controls (odds ratio [OR] = 3.9; 95% confidence interval [CI]: 2.6 to 5.8). The association was even stronger for mesothelioma (OR = 17; 95% CI: 10 to 28; based on 15 studies with 528 mesothelioma samples and 468 control samples) and for bone cancer (OR = 25; 95% CI: 6.8 to 88; based on four studies with 303 cancers and 121 control samples). SV40 DNA was also more frequent in samples from patients with non-Hodgkin’s lymphoma (OR = 5.4; 95% CI: 3.1 to 9.3; based on three studies with 301 cases and 578 control samples) than from controls. CONCLUSION These results establish that SV40 is associated significantly with brain tumors, bone cancers, malignant mesothelioma, and non-Hodgkin’s lymphoma. Studies are needed to assess current prevalence of SV40 infections. http://www.ncbi.nlm.nih.gov/pubmed/12798456 “These results establish that SV40 is associated significantly with brain tumors, bone cancers, malignant mesothelioma, and non-Hodgkin’s lymphoma.” Oncogene • August 2003 New developments about the association of SV40 with human mesothelioma Author information Carbone M1, Pass HI, Miele L, Bocchetta M. Department of Pathology, Cardinal Bernardin Cancer Center Cancer Immunology Program, Loyola University Chicago Maywood, IL 60153, USA mcarbon@orion.it.luc.edu Abstract Simian virus 40 (SV40) has been detected in human tumors in over 40 different laboratories. Many of these reports linked SV40 to human mesotheliomas. The Vaccine Safety Committee of the Institute of Medicine (IOM), National Academy of Sciences, USA, recently reviewed the evidence associating polio vaccines and/or SV40 with human tumors. The IOM conclusions about polio vaccines and human cancer were: (1) ‘the evidence is inadequate to accept or reject a causal relation between SV40-containing polio vaccines and cancer’ because the ‘epidemiological studies are sufficiently flawed’; (2) ‘the biological evidence is of moderate strength that SV40 exposure from the polio vaccines is related to SV40 infection in humans’. The epidemiological studies were considered flawed because it was not possible to distinguish reliably among exposed and nonexposed cohorts. Concerning SV40, the IOM concluded that (1) ‘the evidence is strong that SV40 is a transforming virus; (2) the evidence is of moderate strength that SV40 exposure could lead to cancer in humans under natural conditions’ (IOM, 2002). Similar conclusions were reached at an International consensus meeting on SV40 and human tumors held at the University of Chicago in 2001. G Klein and C Croce, who chaired the final panel that reviewed all the published evidence linking SV40 to human tumors, stated that ‘the presence of SV40 in human tumors has been convincingly demonstrated’ (Klein et al., 2002). In addition, a workshop organized by the Biological Carcinogenesis Branch of the National Cancer Institute, Bethesda, MD, chaired by J Pagano, has reached similar conclusions (Wong et al., 2002). Therefore, three independent scientific panels have all agreed that there is compelling evidence that SV40 is present in some human cancers and that SV40 could contribute to the pathogenesis of some of them. It should be noted that the presence of SV40 in mesothelioma and other human tumor types has been challenged by a research team that has consistently reported negative findings (Strickler et al., 2001). However, a member of this research team has recently acknowledged - in sworn testimony -sensitivity problems and possible irregularities that raise concerns about these negative reports (MacLachlan, 2002). These revelations, together with the conclusions of the three independent panels mentioned above, appear to bring to an end the apparent controversy about the presence of SV40 in human mesotheliomas and brain tumors. http://www.ncbi.nlm.nih.gov/pubmed/12910254 “Therefore, three independent scientific panels have all agreed that there is compelling evidence that SV40 is present in some human cancers and that SV40 could contribute to the pathogenesis of some of them.” [foetal calf serum is used in vaccine production] Biologicals • September 2003 Bovine viral diarrhoea virus antigen in foetal calf serum batches and consequences of such contamination for vaccine production Author information Makoschey B1, van Gelder PT, Keijsers V, Goovaerts D. Virological R&D Department Intervet International b.v., Wim de Körverstraat 35 NL-5831 AN, Boxmeer, The Netherlands Birgit.Makoschey@Intervet.com Abstract A protocol to test foetal calf serum (FCS) for contamination with bovine viral diarrhoea virus (BVDV) is described. Following this protocol, which combines cell culture methods and detection of pestivirus RNA, seven batches of FCS were tested. Infectious BVDV was detected in four of those batches. One of the remaining batches contained a relatively high number of non-infectious BVDV particles. A sample of this batch was formulated with aluminium hydroxide and aluminium phosphate as adjuvant into an experimental vaccine preparation. This product was injected twice into BVDV seronegative cattle with a 4 week interval. Blood samples taken 4 weeks after the second application were negative for BVDV specific antibodies. Our data stress that detection of BVDV RNA is not sufficient for a complete risk assessment on FCS. Discrimination between infectious and non-infectious BVDV is essential. This can only be achieved by cell culture methods. http://www.ncbi.nlm.nih.gov/pubmed/12935809 “Our data stress that detection of BVDV RNA is not sufficient for a complete risk assessment on Foetal Calf Serum. Discrimination between infectious and non-infectious BVDV is essential. This can only be achieved by cell culture methods.” Veterinaria Italiana • January 2004 Genotypes of Pestivirus RNA detected in anti-influenza virus vaccines for human use Author information Giangaspero M1, Vacirca G, Harasawa R, Buttner M, Panuccio A, De Giuli Morghen C, Zanetti A, Belloli A, Verhulst A. Dipartimento di Scienze Cliniche Veterinarie Facoltà di Medicina Veterinaria, Università degli Studi Milan, Italy Abstract Nine polyvalent human influenza virus vaccines were tested by reverse transcriptase-polymerase chain reaction (RT-PCR) for the presence of pestivirus RNA. Samples were selected from manufacturers in Europe and the USA. Three samples of the nine vaccines tested (33.3%) gave positive results for pestivirus RNA. The 5’-untranslated genomic region sequence of the contaminant pestivirus RNA was analysed based on primary nucleotide sequence homology and on secondary sequence structures characteristic to genotypes. Two sequences belonged to Pestivirus type-1 (bovine viral diarrhoea virus [BVDV]) species, genotypes BVDV-1b and BVDV-1e. These findings confirm previous reports, suggesting an improvement in preventive measures against contamination of biological products for human use. http://www.ncbi.nlm.nih.gov/pubmed/?term=20437384 Full Report (In Italian) http://www.izs.it/vet_italiana/2004/40_1/7.pdf “Samples were selected from manufacturers in Europe and the USA. Three samples of the nine vaccines tested (33.3%) gave positive results for pestivirus RNA.” Virology • January 2004 Simian virus 40 infection in humans and association with human diseases: results and hypotheses Author information Barbanti-Brodano G1, Sabbioni S, Martini F, Negrini M, Corallini A, Tognon M. Department of Experimental and Diagnostic Medicine Section of Microbiology, Center of Biotechnology University of Ferrara, I-44100, Ferrara, Italy Abstract Simian virus 40 (SV40) is a monkey virus that was introduced in the human population by contaminated poliovaccines, produced in SV40-infected monkey cells, between 1955 and 1963. Epidemiological evidence now suggests that SV40 may be contagiously transmitted in humans by horizontal infection, independent of the earlier administration of SV40-contaminated poliovaccines. This evidence includes detection of SV40 DNA sequences in human tissues and of SV40 antibodies in human sera, as well as rescue of infectious SV40 from a human tumor. Detection of SV40 DNA sequences in blood and sperm and of SV40 virions in sewage points to the hematic, sexual, and orofecal routes as means of virus transmission in humans. The site of latent infection in humans is not known, but the presence of SV40 in urine suggests the kidney as a possible site of latency, as it occurs in the natural monkey host. SV40 in humans is associated with inflammatory kidney diseases and with specific tumor types: mesothelioma, lymphoma, brain, and bone. These human tumors correspond to the neoplasms that are induced by SV40 experimental inoculation in rodents and by generation of transgenic mice with the SV40 early region gene directed by its own early promoter-enhancer. The mechanisms of SV40 tumorigenesis in humans are related to the properties of the two viral oncoproteins, the large T antigen (Tag) and the small t antigen (tag). Tag acts mainly by blocking the functions of p53 and RB tumor suppressor proteins, as well as by inducing chromosomal aberrations in the host cell. These chromosome alterations may hit genes important in oncogenesis and generate genetic instability in tumor cells. The clastogenic activity of Tag, which fixes the chromosome damage in the infected cells, may explain the low viral load in SV40-positive human tumors and the observation that Tag is expressed only in a fraction of tumor cells. “Hit and run” seems the most plausible mechanism to support this situation. The small tag, like large Tag, displays several functions, but its principal role in transformation is to bind the protein phosphatase PP2A. This leads to constitutive activation of the Wnt pathway, resulting in continuous cell proliferation. The possibility that SV40 is implicated as a cofactor in the etiology of some human tumors has stimulated the preparation of a vaccine against the large Tag. Such a vaccine may represent in the future a useful immunoprophylactic and immunotherapeutic intervention against human tumors associated with SV40. http://www.ncbi.nlm.nih.gov/pubmed/?term=15015494 “Simian virus 40 (SV40) is a monkey virus that was introduced in the human population by contaminated poliovaccines, produced in SV40-infected monkey cells, between 1955 and 1963. Epidemiological evidence now suggests that SV40 may be contagiously transmitted in humans by horizontal infection, independent of the earlier administration of SV40-contaminated poliovaccines.” Medical Hypotheses • 2005 Multiple sclerosis and hepatitis B vaccination: could minute contamination of the vaccine by partial hepatitis B virus polymerase play a role through molecular mimicry? Author information Faure E. E.R. Biodiversity and Environment, case 5 University of Provence, Place Victor Hugo 13331 Marseilles cedex 3, France eric.faure@up.univ-mrs.fr Abstract Reports of multiple sclerosis developing after hepatitis B vaccination have led to the concern that this vaccine might be a cause of multiple sclerosis in previously healthy subjects. Some articles evidenced that minor Hepatitis B virus (HBV) polymerase proteins could be produced by alternative transcriptional or translational strategies. Their detection is very difficult because they are in minute concentration and probably enzymatically inactive, however, it was shown that they could be exposed on the outside of the virus particles and also be immunogenic. In addition, HBV polymerase shares significant amino acid similarities with the human myelin basic protein. We hypothesise that some of the apparent adverse reactions to the vaccine could be due to a process called of molecular mimicry, the HBV polymerase, which could be a contaminant in the recombinant or plasma-derived vaccines, could act as autoantigens and induce autoimmune demyelinating diseases such as multiple sclerosis. http://www.ncbi.nlm.nih.gov/pubmed/15908138 “We hypothesise that some of the apparent adverse reactions to the vaccine could be due to a process called of molecular mimicry, the Hepatitus B Virus polymerase, which could be a contaminant in the recombinant or plasma-derived vaccines, could act as autoantigens and induce autoimmune demyelinating diseases such as multiple sclerosis.” Cancer Research • November 2005 Some oral poliovirus vaccines were contaminated with infectious SV40 after 1961 Author information Cutrone R1, Lednicky J, Dunn G, Rizzo P, Bocchetta M, Chumakov K, Minor P, Carbone M. Thoracic Oncology Program, Cardinal Bernardin Cancer Center Loyola University, Chicago, Illinois, USA “It has been assumed that all polio vaccines were SV40 free in the United States after 1961 and in other countries after 1962. Abstract Some polio vaccines prepared from 1954 to 1961 were contaminated with infectious SV40. It has been assumed that all polio vaccines were SV40 free in the United States after 1961 and in other countries after 1962. Following a WHO requirement that was prompted by the detection of SV40 in some human tumors, we conducted a multilaboratory study to test for SV40 polio vaccines prepared after 1961. Vaccine samples from 13 countries and the WHO seed were initially tested by PCR. The possible presence of intact and/or infectious SV40 DNA in PCR-positive samples was tested by transfection and infection of permissive CV-1 cells. All results were verified by immunohistochemistry, cloning, and sequencing. All the vaccines were SV40 free, except for vaccines from a major eastern European manufacturer that contained infectious SV40. We determined that the procedure used by this manufacturer to inactivate SV40 in oral poliovirus vaccine seed stocks based on heat inactivation in the presence of MgCl2 did not completely inactivate SV40. These SV40-contaminated vaccines were produced from early 1960s to about 1978 and were used throughout the world. Our findings underscore the potential risks of using primary monkey cells for preparing poliovirus vaccines, because of the possible contamination with SV40 or other monkey viruses, and emphasize the importance of using well-characterized cell substrates that are free from adventitious agents. Moreover, our results indicate possible geographic differences in SV40 exposure and offer a possible explanation for the different percentage of SV40-positive tumors detected in some laboratories. http://www.ncbi.nlm.nih.gov/pubmed/16288015 These SV40-contaminated vaccines were produced from early 1960s to about 1978 and were used throughout the world. Our findings underscore the potential risks of using primary monkey cells for preparing poliovirus vaccines, because of the possible contamination with SV40 or other monkey viruses, and emphasize the importance of using well-characterized cell substrates that are free from adventitious agents.” Brain Research Reviews • December 2005 Human polyomaviruses and brain tumors Author information White MK1, Gordon J, Reiss K, Del Valle L, Croul S, Giordano A, Darbinyan A, Khalili K. Center for Neurovirology and Cancer Biology College of Science and Technology, Temple University 1900 North 12th Street, 015-96, Room 203 Philadelphia, PA 19122, USA Abstract Polyomaviruses are DNA tumor viruses with small circular genomes. Three polyomaviruses have captured attention with regard to their potential role in the development of human brain tumors: JC virus (JCV), BK virus (BKV), and simian vacuolating virus 40 (SV40). JCV is a neurotropic polyomavirus that is the etiologic agent of progressive multifocal leukoencephalopathy (PML), a fatal demyelinating disease of the central nervous system occurring mainly in AIDS patients. BKV is the causative agent of polyomavirus-associated nephropathy (PVN) which occurs after renal transplantation when BKV reactivates from a latent state during immunosuppressive therapy to cause allograft failure. SV40, originating in rhesus monkeys, gained notoriety when it entered the human population via contaminated polio vaccines. All three viruses are highly oncogenic when injected into the brain of experimental animals. Reports indicate that these viruses, especially JCV, are associated with brain tumors and other cancers in humans as evidenced from the analysis of clinical samples for the presence of viral DNA sequences and expression of viral proteins. Human polyomaviruses encode three non-capsid regulatory proteins: large T-antigen, small t-antigen, and agnoprotein. These proteins interact with a number of cellular target proteins to exert effects that dysregulate pathways involved in the control of various host cell functions including the cell cycle, DNA repair, and others. In this review, we describe the three polyomaviruses, their abilities to cause brain and other tumors in experimental animals, the evidence for an association with human brain tumors, and the latest findings on the molecular mechanisms of their actions. http://www.ncbi.nlm.nih.gov/pubmed/15982744 “In this review, we describe the three polyomaviruses, [SV40, JC virus (JCV) and BK virus (BKV)] their abilities to cause brain and other tumors in experimental animals, the evidence for an association with human brain tumors, and the latest findings on the molecular mechanisms of their actions.” Developments In Biologicals (Basel) • 2006 Vaccine cell substrates: bovine and porcine virus considerations “The use of materials of animal origin Author information to supplement cell cultures used in Wessman SJ vaccine production, viral diagnostic USDA, APHIS, VS Center for Veterinary Biologics Ames, Iowa 50010, USA stephen.j.wessman@aphis.usda.gov Abstract The use of materials of animal origin to supplement cell cultures used in vaccine production, viral diagnostic testing, or materials testing may lead to contamination of the vaccines, with seroconversion or disease in the vaccinated animals, and possible misdiagnosis of diagnostic samples or incorrect test results. The methods used by the Center for Veterinary Biologics to monitor serum and cell cultures are described. Considerations for the use of animal origin materials, especially bovine and porcine, as substrates or additives, plus the possibility of crossovers to humans are discussed. http://www.ncbi.nlm.nih.gov/pubmed/16566453 testing, or materials testing may lead to contamination of the vaccines, with seroconversion or disease in the vaccinated animals, and possible misdiagnosis of diagnostic samples or incorrect test results.” Archives de Pediatrie • February 2006 Pharmacovigilance of vaccines Author information Autret-Leca E1, Bensouda-Grimaldi L, Jonville-Béra AP, Beau-Salinas F. Service de Pharmacologie, Hôpital Bretonneau Université François-Rabelais de Tours Centre Régional de Pharmacovigilance et d’Information sur le Médicament CHRU de Tours, 2, boulevard Tonnellé, 37044 Tours, cedex 09, France autret-leca@med.univ-tours.fr Abstract Safety of vaccines must be excellent to make vaccine’s strategy acceptable, since it usually has a deferred individual benefit but immediate adverse drug reactions (ADRs). Pharmacovigilance of vaccines after their marketing is crucial because, prior to its availability on the market, the size of clinical trials is insufficient to identify rare or deferred adverse effects. The Pharmacovigilance is based on “spontaneous reporting” of ADRs to the Pharmacovigilance Regional Centre (PVRC) which establishes a relationship between each drug taken by the patient and the ADRs occurrence (imputability). This method is crucial to generate alerts, but under-estimates the real frequency of ADRs (1 to 10% of severe ADRs are reported). Thus pharmacoepidemiology studies are necessary to confirm the alerts identified by spontaneous reporting. ADRs can be specific, related to the antigen of an attenuated alive virus vaccine (lymphocyte meningitis after anti-mumps vaccine) or non-specific, related to a component different from the antigen (aluminium hydroxide involved in the “macrophagic myofasciitis”, allergic reactions to neomycin, latex, egg or gelatine). Importance of Pharmacovigilance of vaccines is illustrated. Data, especially case-control studies, about the relationship between multiple sclerosis and hepatitis B vaccine are summarised. Data about the relationship between Crohn’s disease or autism and MMR vaccine are analysed. As vaccines are used in healthy people, their safety must be excellent to be accepted. To monitor them after their marketing is the unique way to detect rare ADRs. This surveillance is made through reporting of ADRs to the PVRC. However, an active and intensive surveillance of ADRs as the one set up from the marketing of Prevenar should be systematic. http://www.ncbi.nlm.nih.gov/pubmed/16343870 “Pharmacovigilance of vaccines after their marketing is crucial because, prior to its availability on the market, the size of clinical trials is insufficient to identify rare or deferred adverse effects.” Developments In Biology, Basel • March 2006 Polio vaccines, SV40 and human tumours, an update on false positive and false negative results Author information Elmishad AG1, Bocchetta M, Pass HI, Carbone M. Loyola University Medical Center Cardinal Bernardin Cancer Center Department of Pathology, Maywood, IL 60153, USA Abstract Simian virus 40 (SV40) has been detected in different human tumours in numerous laboratories. The detection of SV40 in human tumours has been linked to the administration of SV40-contaminated polio vaccines from 1954 until 1963. Many of these reports linked SV40 to human mesothelioma. Some studies have failed to detect SV40 in human tumours and this has caused a controversy. Here we review the current literature. Moreover, we present evidence showing how differences in the sensitivities of methodologies can lead to a very different interpretation of the same study. The same 20 mesothelioma specimens all tested negative, 2/20 tested positive or 7/20 tested positive for SV40 Tag by simply changing the detection method on the same immuno-precipitation/western blot membranes. These results provide a simple explanation for some of the apparent discordant results reported in the literature. http://www.ncbi.nlm.nih.gov/pubmed/16566440 “we present evidence showing how differences in the sensitivities of methodologies can lead to a very different interpretation of the same study.” Cancer Investigation • April 2006 High prevalence of SV40 infection in patients with nodal non-Hodgkin’s lymphoma but not acute leukemia independent of contaminated polio vaccines in Taiwan Author information Chen PM1, Yen CC, Yang MH, Poh SB, Hsiao LT, Wang WS, Lin PC, Lee MY, Teng HW, Bai LY, Chu CJ, Chao SC, Yang AH, Chiou TJ, Liu JH, Chao TC. Division of Medical Oncology Department of Medicine, Taipei Veteran General Hospital Taipei, Taiwan, Republic of China Abstract Recent studies have linked simian virus 40 (SV40) to non-Hodgkin’s lymphoma (NHL), especially in countries in which people were exposed to contaminated polio vaccines prior to 1963. In Taiwan, nearly all children were not exposed to contaminated polio vaccine during this period; the relationship between SV40 infection and hematological malignancies is unclear and deserves to be studied. Using PCR amplification of SV40 large T antigen DNA, confirmed by Southern blot hybridization and sequence analysis, 91 frozen lymph nodes from NHL patients were examined. Thirteen (14.3 percent) showed positive for SV40. All other test samples, including diagnostic bone marrow from patients with acute leukemia, peripheral blood from 10 relatives of SV40 positive-patients and 91 age-matched normal volunteers, and 5 reactive hyperplastic lymphoid tissues, showed negative. These results may reflect that human-to-human transmission of SV40 is independent of contaminated polio vaccines; and SV40 is possibly associated with the development of NHL in Taiwan (p = 0.0001). Prospective studies are needed to determine the prevalence of SV40 infections in our and other human populations and to explore the means of transmission of the virus. http://www.ncbi.nlm.nih.gov/pubmed/16809147 “These results may reflect that human-to-human transmission of SV40 is independent of contaminated polio vaccines; and SV40 is possibly associated with the development of non-Hodgkin’s lymphoma in Taiwan ...” Journal of Public Health Management & Practice • July 2006 The Legal Environment Underlying Influenza Vaccine Allocation and Distribution Strategies Hodge, James G. Jr JD, LLM; O’Connell, Jessica P. JD/MPH Abstract In the fall of 2004, the United States faced a national shortage of influenza vaccine after a major vaccine manufacturer was unable to produce millions of doses of the vaccine due to potential contamination. Many public and private sector entities had far fewer doses of influenza vaccine to allocate than they had anticipated. In response, federal, state, and local public health officials, private vaccine distributors, and healthcare providers collaborated to distribute available doses of influenza vaccine. However, the existing legal framework through which allocations were made is murky. This article examines major legal issues regarding allocation strategies involving limited supplies of influenza vaccines, addressing in particular (1) existing legal requirements for allocating and distributing influenza vaccines among public health authorities and healthcare providers at the federal, state, and local levels; (2) the legal capacity of public health authorities to acquire existing vaccine supplies from healthcare providers; and (3) specific legal responses implemented by states in response to the 2004–2005 influenza vaccine shortage. “In the fall of 2004, the United States faced a national shortage of influenza vaccine after a major vaccine manufacturer was unable to produce millions of doses of the vaccine due to potential contamination.” http://journals.lww.com/jphmp/pages/articleviewer.aspx?year=2006&issue=07000&article=00007&type=abstract Proceedings Of The National Academy Of Science USA • September 2006 Crocidolite asbestos and SV40 are co-carcinogens in human mesothelial cells and in causing mesothelioma in hamsters Barbara Kroczynska,* Rochelle Cutrone,* Maurizio Bocchetta,* Haining Yang,* Amira G. Elmishad,* Pamela Vacek,† Maria Ramos-Nino,‡ Brooke T. Mossman,‡ Harvey I. Pass,§ and Michele Carbone* *Thoracic Oncology Program Cardinal Bernardin Cancer Center Loyola University Chicago, Maywood, IL 60153 Departments of †Medical Biostatistics and ‡Pathology, College of Medicine, University of Vermont, Burlington, VT 05404 and §Department of Thoracic Surgery, New York University, New York, NY 10016 ABSTRACT Only a fraction of subjects exposed to asbestos develop malignant mesothelioma (MM), suggesting that additional factors may render some individuals more susceptible. We tested the hypothesis that asbestos and Simian virus (SV40) are cocarcinogens. Asbestos and SV40 in combination had a costimulatory effect in inducing ERK1/2 phosphorylation and activator protein-1 (AP-1) activity in both primary Syrian hamster mesothelial cells (SHM) and primary human mesothelial cells (HM). Ap-1 activity caused the expression and activation of matrix metalloprotease (MMP)-1 and MMP-9, which in turn led to cell invasion. Experiments using siRNA and chemical inhibitors confirmed the specificity of these results. The same effects were observed in HM and SHM. Experiments in hamsters showed strong cocarcinogenesis between asbestos and SV40: SV40 did not cause MM, asbestos caused MM in 20% of hamsters, and asbestos and SV40 together caused MM in 90% of hamsters. Significantly lower amounts of asbestos were sufficient to cause MM in animals infected with SV40. Our results indicate that mineral fibers and viruses can be cocarcinogens and suggest that lower amounts of asbestos may be sufficient to cause MM in individuals infected with SV40. Full Report: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1599923/ “Our results indicate that mineral fibers and viruses can be cocarcinogens and suggest that lower amounts of asbestos may be sufficient to cause malignant mesothelioma in individuals infected with SV40.” Inhalation Toxicology • November 2006 The role of SV40 in malignant mesothelioma and other human malignancies Author information Pershouse MA1, Heivly S, Girtsman T. Center for Environmental Health Sciences Department of Biomedical and Pharmaceutical Sciences University of Montana, Missoula, Montana 59812, USA mark.pershouse@umontana.edu Abstract SV40 is a DNA tumor virus thrust upon human populations primarily as a contaminant in various vaccine preparations. Some estimates suggest that millions of people are currently infected with the virus. The virus causes primary brain tumors, bone tumors, lymphomas, and mesotheliomas when injected into some rodent models. It has also been detected in a similar spectrum of human tumors. However, epidemiological studies have failed to conclusively demonstrate a higher incidence of disease in affected populations. To date, over 60 reports from 49 different laboratories have shown SV40 sequences in tissues from human cancer patients. Six studies, however, have failed to detect evidence of virus in similar tissues. Some have suggested that SV40 may act as a cocarcinogen with asbestos to cause mesothelioma formation, or that it may be responsible for the 10-20% of mesotheliomas with no reported history of asbestos exposure. This report briefly covers the historical evidence for SV40 carcinogenesis and then covers experiments now underway to better understand the role of SV40 in human mesotheliomas. https://www.ncbi.nlm.nih.gov/pubmed/16920674 “Some have suggested that SV40 may act as a co-carcinogen with asbestos ‘to cause mesothelioma formation, or that it may be responsible for the 10-20% of mesotheliomas with no reported history of asbestos exposure.” “The use of materials of animal origin to supplement cell cultures used in vaccine production, viral diagnostic testing, or materials testing may lead to contamination of the vaccines ...” Developments In Biologicals (Basel) • 2006 Vaccine cell substrates: bovine and porcine virus considerations Author information Wessman SJ. USDA, APHIS, VS, Center for Veterinary Biologics, Ames, Iowa 50010, USA stephen.j.wessman@aphis.usda.gov Abstract The use of materials of animal origin to supplement cell cultures used in vaccine production, viral diagnostic testing, or materials testing may lead to contamination of the vaccines, with seroconversion or disease in the vaccinated animals, and possible misdiagnosis of diagnostic samples or incorrect test results. The methods used by the Center for Veterinary Biologics to monitor serum and cell cultures are described. Considerations for the use of animal origin materials, especially bovine and porcine, as substrates or additives, plus the possibility of crossovers to humans are discussed. http://www.ncbi.nlm.nih.gov/pubmed/16566453 Cellular And Molecular Life Sciences • April 2007 SV40 association with human malignancies and mechanisms of tumor immunity by large tumor antigen Author information Lowe DB1, Shearer MH, Jumper CA, Kennedy RC. Department of Microbiology and Immunology Texas Tech University Health Sciences Center Lubbock, TX 79430-6591, USA Abstract SV40 was discovered as a contaminate of poliovirus vaccine lots distributed to millions of individuals in the United States between 1955 and 1963 while contaminated vaccine batches were later circulated worldwide. After SV40 was observed to cause in vitro animal and human cell transformations and in vivo tumor formations in animals, the search for a connection between the virus and human malignancies has continued to the present day. Different molecular methods have been used to detect SV40 gene products in a variety of human cancers, though SV40 causality in these tumor types has yet to be established. These data, however, are not without controversial issues related to inconclusive SV40 serological and epidemiological evidence alongside tools and methodologies that may contribute to false-positive results in human specimens. This review will also explore how vaccination against SV40 protein products may be used to help prevent and treat individuals with SV40-expressing cancers. http://www.ncbi.nlm.nih.gov/pubmed/17260087 “SV40 was discovered as a contaminate of poliovirus vaccine lots distributed to millions of individuals in the United States between 1955 and 1963 while contaminated vaccine batches were later circulated worldwide.” Immunology Letters • June 2007 Mycoplasma contamination and viral immunomodulatory activity: dendritic cells open Pandora’s box Author information Alves MP1, Carrasco CP, Balmelli C, Ruggli N, McCullough KC, Summerfield A. Institute of Virology and Immunoprophylaxis Sensemattstrasse 293, CH-3147 Mittelhäusern, Switzerland Abstract During in vitro investigations on the interaction of classical swine fever virus (CSFV)-an immunosuppressive viral pathogen--with monocyte-derived dendritic cells (MoDC) a soluble factor with a strong anti-proliferative activity for T lymphocytes was found. This activity, with an inhibitory dilution 50% (ID(50)) of 10(3)-10(7), was induced after virus infection of monocytes differentiating into DC. UV--inactivation of the supernatants and blocking experiments with a monoclonal antibody against the E2 envelope protein of CSFV initially indicated a virus-dependency. However, further investigations including filtration and centrifugation experiments as well as antibiotic treatment demonstrated the involvement of mycoplasma. This was confirmed by a Hoechst 33258 staining, PCR and mycoplasma cultures--Mycoplasma hyorhinis was identified as the contaminant. Elucidation of a mycoplasma presence occurred under conditions in which the original virus stocks prepared in SK6 cells were negative for mycoplasma using the above tests. Moreover, conventional passage of the virus on the SK6 cells used for this purpose did not reveal any mycoplasma. It was the passage of virus in MoDC rather than SK6 cells that was required to expose the contamination. Three passages of the anti-proliferative supernatants on MoDC cultures increased the ID(50) 10(3)-fold; only when these MoDC-derived supernatants were employed was the mycoplasma contaminant also detectable on SK6 cells. In conclusion, these data demonstrate that regular testing of cell lines and virus stocks for mycoplasma does not necessarily identify their presence, and that application of passage in MoDC cultures could prove an aid for identifying initially undetectable levels of mycoplasma contamination. http://www.ncbi.nlm.nih.gov/pubmed/?term=17532055 “... these data demonstrate that regular testing of cell lines and virus stocks for mycoplasma does not necessarily identify their presence ...” Cellular And Molecular Life Sciences • July 2007 Oncogenic potentials of the human polyomavirus regulatory proteins Author information Moens U1, Van Ghelue M, Johannessen M. Department of Microbiology and Virology Faculty of Medicine, University of Tromsø N-9037, Tromsø, Norway ugom@fagmed.uit.no Abstract The polyomaviruses BK, JC and SV40 are common in the human population. Their DNA genomes encode large T-antigen, small t-antigen, agnoprotein, and the capsid proteins VP1-3. Studies with these viruses have contributed extensively to the understanding of processes such as replication, transcriptional and posttranscriptional regulation, and cell cycle control. All three viruses can transform human cells in vitro, can induce tumours in animal models, and are strongly association with certain human cancers. It is generally assumed that large T-antigen is the major protein involved in neoplastic processes and that large T-antigen predominantly exerts its effect through deregulation of the tumour suppressors p53 and the retinoblastoma family members. However, additional properties of large T-antigen as well as the other viral proteins contribute to oncogenic processes. This review presents the different mechanisms by which the polyomavirus proteins can induce transformation and discusses which mechanisms may be operational in polyomavirus-positive cancers. https://www.ncbi.nlm.nih.gov/pubmed/17483871 “This review presents the different mechanisms by which the polyomavirus proteins can induce transformation and discusses which mechanisms may be operational in polyomavirus-positive cancers.” “... determining the origin of the SV40 sequences detected in human tumors might be difficult.” Virology • January 2008 Recovery of strains of the polyomavirus SV40 from rhesus monkey kidney cells dating from the 1950s to the early 1960s Keith Pedena, Li Shenga, Romelda Omeira, Maureen Yacobuccia, Michael Klutchb, †, Majid Laassric, Konstantin Chumakovc, Achintya Palb, 1, Haruhiko Murataa, b, Andrew M. Lewis Jr.b a. Laboratory of Retrovirus Research, Division of Viral Products, Center for Biologics Evaluation and Research Food and Drug Administration, 29 Lincoln Drive, Bethesda, MD 20892, USA b. Laboratory of DNA Viruses, Division of Viral Products, Center for Biologics Evaluation and Research Food and Drug Administration, Bethesda, MD 20892, USA c. Laboratory of Methods Development, Division of Viral Products, Center for Biologics Evaluation and Research Food and Drug Administration, Bethesda, MD 20892, USA Abstract From stocks of adenovirus and poliovirus prepared in primary rhesus macaque kidney cells and dating from 1956 to 1961, the time when SV40 contaminated some poliovirus vaccine lots, we have recovered ten isolates of SV40. Of these ten isolates, based on the C-terminal region of T antigen, five novel strains of SV40 have been identified. Additionally, three pairs of isolates were found to be the same strain: one pair was strain 777, one pair was strain 776 archetype, and the third pair represented a novel strain. All strains had identical protein sequences for VP2 and VP3. There were two variants of agnoprotein and the small t antigen and three variants of VP1. These results, and those of others, suggest that a limited number of SV40 strains might exist in rhesus macaques in the United States, and thus determining the origin of the SV40 sequences detected in human tumors might be difficult. Full Report: http://www.sciencedirect.com/science/article/pii/S0042682207004321 Journal Of Pharmaceutical And Biomedical Analysis • February 2008 Strategy for identification of leachables in packaged pharmaceutical liquid formulations Author information Pan C1, Harmon F, Toscano K, Liu F, Vivilecchia R. Pharmaceutical and Analytical Development Novartis Pharmaceuticals Corporation, One Health Plaza East Hanover, NJ 07936, USA charles.pan@novartis.com Abstract Drug stability is one of the key properties to be monitored in pharmaceutical drug development. Drug degradation products, impurities and/or leachables from the drug product and packages may have significant impacts on drug efficacy, safety profile and storage conditions. In the registration stability samples of an ophthalmic pharmaceutical drug product, an unknown compound was found at a level of 0.19% by HPLC analysis. Subsequent liquid chromatography/mass spectrometry (LC/MS) analysis with electrospray ionization (ESI) indicated that the unknown was not related to the drug substance and was most likely a leachable. Identification of this unknown leachable was needed to evaluate the impact on drug safety. Through systematic extraction of various components or component combination of the packaging materials, and subsequently LC/MS analysis, the unknown was found to be a leachable coming from the varnish applied to the label. In general, using LC/MS alone is not sufficient to elucidate the structure of a complete unknown. Gas chromatography/mass spectrometry (GC/MS) was then conducted with a chemical ionization (CI) source to determine the retention time and mass of the compound of interest. Both CI and ESI sources generated the same protonated molecular ion [M+H] and similar fragmentation ions, which provides a good correlation of the unknown eluted in the liquid chromatogram and in the gas chromatogram. GC/MS with electron impact (EI) was then conducted to obtain the EI mass spectrum of this unknown. It was identified as monomethyl derivative of mephenesin through the NIST library search. The identification strategy utilized electrospray LC/MS and GC/MS with chemical and electron ionization sources which provided complimentary information for structure elucidation of this unknown compound. This combination approach in conjunction with systematic extraction was necessary for the determination of the source of this unknown in the pharmaceutical drug stability studies. http://www.ncbi.nlm.nih.gov/pubmed/?term=18180126 “Drug degradation products, impurities and/or leachables from the drug product and packages may have significant impacts on drug efficacy, safety profile and storage conditions.” International Journal Of Nanomedicine • June 2008 Drug delivery and nanoparticles: Applications and hazards Wim H De Jong1 and Paul JA Borm2,3 1. Laboratory for Toxicology, Pathology and Genetics, National Institute for Public Health and the Environment (RIVM) Bilthoven, The Netherlands 2. Zuyd University, Centre of Expertise in Life Sciences Heerlen, The Netherlands 3. Magnamedics GmbH, Aachen, Germany Abstract The use of nanotechnology in medicine and more specifically drug delivery is set to spread rapidly. Currently many substances are under investigation for drug delivery and more specifically for cancer therapy. Interestingly pharmaceutical sciences are using nanoparticles to reduce toxicity and side effects of drugs and up to recently did not realize that carrier systems themselves may impose risks to the patient. The kind of hazards that are introduced by using nanoparticles for drug delivery are beyond that posed by conventional hazards imposed by chemicals in classical delivery matrices. For nanoparticles the knowledge on particle toxicity as obtained in inhalation toxicity shows the way how to investigate the potential hazards of nanoparticles. The toxicology of particulate matter differs from toxicology of substances as the composing chemical(s) may or may not be soluble in biological matrices, thus influencing greatly the potential exposure of various internal organs. This may vary from a rather high local exposure in the lungs and a low or neglectable exposure for other organ systems after inhalation. However, absorbed species may also influence the potential toxicity of the inhaled particles. For nanoparticles the situation is different as their size opens the potential for crossing the various biological barriers within the body. From a positive viewpoint, especially the potential to cross the blood brain barrier may open new ways for drug delivery into the brain. In addition, the nanosize also allows for access into the cell and various cellular compartments including the nucleus. A multitude of substances are currently under investigation for the preparation of nanoparticles for drug delivery, varying from biological substances like albumin, gelatine and phospholipids for liposomes, and more substances of a chemical nature like various polymers and solid metal containing nanoparticles. It is obvious that the potential interaction with tissues and cells, and the potential toxicity, greatly depends on the actual composition of the nanoparticle formulation. This paper provides an overview on some of the currently used systems for drug delivery. Besides the potential beneficial use also attention is drawn to the questions how we should proceed with the safety evaluation of the nanoparticle formulations for drug delivery. For such testing the lessons learned from particle toxicity as applied in inhalation toxicology may be of use. Although for pharmaceutical use the current requirements seem to be adequate to detect most of the adverse effects of nanoparticle formulations, it can not be expected that all aspects of nanoparticle toxicology will be detected. So, probably additional more specific testing would be needed. Full Report: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2527668/ “for pharmaceutical use the current requirements seem to be adequate to detect most of the adverse effects of nanoparticle formulations, it can not be expected that all aspects of nanoparticle toxicology will be detected.” Collegium Antropologicum • June 2008 The role of polio-vaccine in pleural mesothelioma— an epidemiological observation Author information Sarin M1, Curin K, Varnai VM. Institute for Medical Research and Occupational Health Zagreb, Croatia marko@imi.hr Abstract From the Croatian Cancer Registry (period 1991-1997) 194 malignant pleural mesothelioma patients were collected. According to participation in polio vaccination mass campaign in 1961 that covered the entire Croatian population aged 3 months to 20 years, mesothelioma patients were divided in vaccinated (N=58), and non-vaccinated (N=136) subjects. Significantly higher percentage of those with a history of occupational exposure to asbestos was found in vaccinated (79%) compared to non-vaccinated group (63%). This is the opposite to what would be expected if potential SV40 contamination of polio vaccine used had a causative role in the development of the tumour. On the other hand, shorter latency period reflected by very high percentage of 45-year-old or younger mesothelioma patients in vaccinated group (15 out of 58), with all of them having a history of occupational asbestos exposure, raises a question for a possible enhancing effect of the vaccine used to asbestos exposure, if it was contaminated with SV40. http://www.ncbi.nlm.nih.gov/pubmed/18756898 “... raises a question for a possible enhancing effect of the vaccine used to asbestos exposure ...” Vaccine • June 2008 A quantitative risk assessment of exposure to adventitious agents in a cell culture-derived subunit influenza vaccine Author information Gregersen JP. Novartis Behring, Marburg, Germany jens-peter.gregersen@novartis.com Abstract A risk-assessment model has demonstrated the ability of a new cell culture-based vaccine manufacturing process to reduce the level of any adventitious agent to a million-fold below infectious levels. The cell culture-derived subunit influenza vaccine (OPTAFLU), Novartis Vaccines and Diagnostics) is produced using Madin-Darby canine kidney (MDCK) cells to propagate seasonal viral strains, as an alternative to embryonated chicken-eggs. As only a limited range of mammalian viruses can grow in MDCK cells, similar to embryonated eggs, MDCK cells can act as an effective filter for a wide range of adventitious agents that might be introduced during vaccine production. However, the introduction of an alternative cell substrate (for example, MDCK cells) into a vaccine manufacturing process requires thorough investigations to assess the potential for adventitious agent risk in the final product, in the unlikely event that contamination should occur. The risk assessment takes into account the entire manufacturing process, from initial influenza virus isolation, through to blending of the trivalent subunit vaccine and worst-case residual titres for the final vaccine formulation have been calculated for >20 viruses or virus families. Maximum residual titres for all viruses tested were in the range of 10(-6) to 10(-16) infectious units per vaccine dose. Thus, the new cell culture-based vaccine manufacturing process can reduce any adventitious agent to a level that is unable to cause infection. http://www.ncbi.nlm.nih.gov/pubmed/18485545 “... the ability of a new cell culture-based vaccine manufacturing process to reduce the level of any adventitious agent to a million-fold below infectious levels.” “Two tetanus outbreaks in 1901 — from contaminated diphtheria antitoxin in St. Louis, Missouri, and contaminated smallpox vaccine in Camden, New Jersey — raised public concern about pharmaceutical safety.” Perspectives In Biology And Medicine • Spring 2008 The first pharmacoepidemiologic investigations: national drug safety policy in the United States, 1901-1902 Author information Lilienfeld DE. lilienfeld@comcast.net Abstract The pharmaceutical industry developed in the late 19th century as a consequence of both scientific and commercial innovations, such as the development of diphtheria antitoxin and the commercialization of smallpox vaccine. Two tetanus outbreaks in 1901 — from contaminated diphtheria antitoxin in St. Louis, Missouri, and contaminated smallpox vaccine in Camden, New Jersey — raised public concern about pharmaceutical safety. In St. Louis, errant manufacturing processes were found to be the source of the outbreak. In Camden, investigation identified contaminated vaccine from one manufacturer as the cause. These investigations, the first known pharmacoepidemiologic studies, were widely reported. They formed the basis for the 1902 Biologics Control Act, which focused on the safety of biologics produced and sold by the pharmaceutical industry and established a precedent of federal regulation of this industry. That power, welcomed by manufacturers to restore the public’s trust in their products, was enhanced in the 1906 Food and Drug Act, which created the Food and Drug Administration. http://www.ncbi.nlm.nih.gov/pubmed/18453724 Virology • December 2008 SV40 DNA replication: From the A gene to a nanomachine Author Information Ellen Fanning* and Kun Zhao Department of Biological Sciences and Vanderbilt-Ingram Cancer Center Vanderbilt University, Nashville, TN 37235-1634 Abstract Duplication of the simian virus 40 (SV40) genome is the best understood eukaryotic DNA replication process to date. Like most prokaryotic genomes, the SV40 genome is a circular duplex DNA organized in a single replicon. This small viral genome, its association with host histones in nucleosomes, and its dependence on the host cell milieu for replication factors and precursors led to its adoption as a simple and powerful model. The steps in replication, the viral initiator, the host proteins, and their mechanisms of action were initially defined using a cellfree SV40 replication reaction. Although our understanding of the vastly more complex host replication fork is advancing, no eukaryotic replisome has yet been reconstituted and the SV40 paradigm remains a point of reference. This article reviews some of the milestones in the development of this paradigm and speculates on its potential utility to address unsolved questions in eukaryotic genome maintenance. Full Report: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2718763/ “Duplication of the simian virus 40 genome is the best understood eukaryotic DNA replication process to date.” BMJ • March 2009 Suspected contamination leads to recall of meningitis C vaccine Caroline White Two batches of meningitis C vaccine distributed to general practices across England have been recalled by the medicines watchdog amid fears that they may have been contaminated. The manufacturer, Novartis Vaccines, raised the alarm last week after routine sampling of a shipment of doses from the same two batches air freighted to the United States showed contamination with Staphylococcus aureus. The sterility of the solvent, aluminium hydroxide, which is used to mix the vaccine, had been compromised. Purchase the full report for $23 http://www.bmj.com/content/338/bmj.b896.long “The sterility of the solvent, aluminium hydroxide, which is used to mix the vaccine, had been compromised.” Pharmacoepidemiological Drug Safety • March 2010 Safety assessment of recalled Haemophilus influenzae type b (Hib) conjugate vaccines United States, 2007-2008 Author information Huang WT1, Chang S, Miller ER, Woo EJ, Hoffmaster AR, Gee JE, Clark TA, Iskander JK, Ball R, Broder KR. Epidemic Intelligence Service, Career Development Division Office of the Workforce and Career Development Centers for Disease Control and Prevention (CDC) Atlanta, GA 30333, USA Abstract PURPOSE On 13 December 2007, Merck & Co., Inc. voluntarily recalled 1.2 million doses of Haemophilus influenzae type b (Hib) vaccines that had been distributed since April 2007 for concerns regarding potential Bacillus cereus contamination. Enhanced postrecall surveillance was conducted to detect vaccine-associated B. cereus infections. “On 13 December 2007, Merck & Co., Inc. METHODS We reviewed reports involving recalled Hib vaccines received by the Vaccine Adverse Event Reporting System (VAERS) during 1 April 2007-29 February 2008. For each reported death, autopsy review sought evidence of B. cereus infections. For each specified outcome, the proportional reporting ratios (PRRs) were calculated to compare the recalled Hib vaccines with the manufacturer’s nonrecalled Hib vaccines in the VAERS databases. On 20 December 2007, we used the Epidemic Information Exchange (Epi-X) to solicit nongastrointestinal vaccine-associated B. cereus infections, and requested B. cereus isolates for genotyping to compare with the manufacturing facility isolate. Haemophilus influenzae type b (Hib) vaccines RESULTS VAERS received 75 reports involving recalled Hib vaccines; none described a confirmed B. cereus infection. Comparative analyses did not reveal disproportionate reporting of specified outcomes for recalled Hib vaccines. The Epi-X posting triggered one report of vaccine-associated B. cereus bacteremia from a child who received a nonrecalled Hib vaccine manufactured by Merck; the genotypes of isolates from the patient and the manufacturing facility differed. CONCLUSIONS No evidence of vaccine-associated B. cereus infection had been found in recipients of recalled Hib vaccines. Conducting laboratory surveillance through Epi-X was feasible and may enhance public health response capacities for future vaccine safety emergencies. http://www.ncbi.nlm.nih.gov/pubmed/20084617 voluntarily recalled 1.2 million doses of that had been distributed since April 2007 ...” Journal Of Virology • April 2010 Isolation of an Infectious Endogenous Retrovirus in a Proportion of Live Attenuated Vaccines for Pets Takayuki Miyazawa,1,‡* Rokusuke Yoshikawa,1,‡ Matthew Golder,2 Masaya Okada,1 Hazel Stewart,2 and Massimo Palmarini2,* 1. Laboratory of Signal Transduction Institute for Virus Research, Kyoto University 53 Shogoin-Kawaracho, Sakyo-ku, Kyoto 606-8507, Japan 2. Institute of Comparative Medicine University of Glasgow Faculty of Veterinary Medicine 464 Bearsden Road, Glasgow G61 1QH, Scotland2 Abstract The genomes of all animal species are colonized by endogenous retroviruses (ERVs). Although most ERVs have accumulated defects that render them incapable of replication, fully infectious ERVs have been identified in various mammals. In this study, we isolated a feline infectious ERV (RD-114) in a proportion of live attenuated vaccines for pets. Isolation of RD-114 was made in two independent laboratories using different detection strategies and using vaccines for both cats and dogs commercially available in Japan or the United Kingdom. This study shows that the methods currently employed to screen veterinary vaccines for retroviruses should be reevaluated. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2838105/?tool=pubmed “ In this study, we isolated a feline infectious ERV (RD-114) in a proportion of live attenuated vaccines for pets. Isolation of RD-114 was made in two independent laboratories using different detection strategies and using vaccines for both cats and dogs commercially available in Japan or the United Kingdom. This study shows that the methods currently employed to screen veterinary vaccines for retroviruses should be reevaluated.” Veterinary Microbiology • April 2010 Atypical ‘HoBi’-like pestiviruses— recent findings and implications thereof Author information Ståhl K1, Beer M, Schirrmeier H, Hoffmann B, Belák S, Alenius S. The Joint R&D Division in Virology the National Veterinary Institute (SVA) and The Swedish University of Agricultural Sciences (SLU) Uppsala, Sweden karl.stahl@bvf.slu.se Abstract In 2004, an atypical pestivirus named D32/00_’HoBi’, isolated from foetal calf serum (FCS) originating from Brazil, was described (Schirrmeier et al., 2004). A few years later, a closely related virus (Th/04_KhonKaen) was detected in serum from a calf in Thailand, indicating that this group of atypical pestiviruses already is spread in cattle populations in various regions of the world. At the Friedrich-Loeffler-Institute, Insel Riems, Germany, FCS batches are regularly tested for pestivirus contamination, in general with positive PCR results, and in some cases the contaminants have been typed as ‘HoBi’-like. At the National Veterinary Institute (SVA) in Uppsala, Sweden, a recent event with contaminated FCS ruined much of the ongoing cell culture work. From the FCS and the contaminated cells we were able to amplify and sequence nucleic acid from three different pestivirus strains, including BVDV-1, -2 and ‘HoBi’-like; this in a commercial FCS that had been tested free from pestivirus by the manufacturer. In this short communication we review the current status of atypical ‘HoBi’-like pestiviruses, describe recent findings and discuss the implications thereof. http://www.ncbi.nlm.nih.gov/pubmed/?term=19857934 “From the Fetal Calf Serum and the contaminated cells we were able to amplify and sequence nucleic acid from three different pestivirus strains, including BVDV-1, -2 and ‘HoBi’-like; this in a commercial FCS that had been tested free from pestivirus by the manufacturer.” Biologicals • May 2010 Endogenous retroviruses as potential hazards for vaccines Author information Miyazawa T1. Laboratory of Signal Transduction Department of Cell Biology Institute for Virus Research Kyoto University, 53 Shogoin-Kawaracho Sakyo-ku, Kyoto 606-8507, Japan takavet@gmail.com Abstract Retroviruses are classified as exogenous or endogenous according to their mode of transmission. Generally, endogenous retroviruses (ERVs) are not pathogenic in their original hosts; however, some ERVs induce diseases. In humans, a novel gammaretrovirus was discovered in patients with prostate cancer or chronic fatigue syndrome. This virus was closely related to xenotropic murine leukemia virus (X-MLV) and designated as xenotropic murine leukemia virus-related virus (XMRV). The origin and transmission route of XMRV are still unknown at present; however, XMRV may be derived from ERVs of rodents because X-MLVs are ERVs of inbred and wild mice. Many live attenuated vaccines for animals are manufactured by using cell lines from animals, which are known to produce infectious ERVs; however, the risks of infection by ERVs from xenospecies through vaccination have been ignored. This brief review gives an overview of ERVs in cats, the potential risks of ERV infection by vaccination, the biological characteristics of RD114 virus (a feline ERV), which possibly contaminates vaccines for companion animals, and the methods for detection of infectious RD114 virus. http://www.ncbi.nlm.nih.gov/pubmed/20378372 “Many live attenuated vaccines for animals are manufactured by using cell lines from animals, which are known to produce infectious ERVs; however, the risks of infection by ERVs from xenospecies through vaccination have been ignored. This brief review gives an overview of ERVs in cats, the potential risks of ERV infection by vaccination, the biological characteristics of RD-114 virus (a feline ERV), which possibly contaminates vaccines for companion animals, and the methods for detection of infectious RD-114 virus.” BMJ • May 2010 Australia suspends seasonal flu vaccination of young children by Melissa Sweet Australia has extended a suspension of vaccination of children aged 5 years and under against seasonal flu, pending further investigations into an apparent spike in febrile convulsions associated with the vaccine. A temporary suspension was first announced on 23 April, after concerns emerged in Western Australia about an increase in the number of young children presenting to hospitals with febrile convulsion after receiving the trivalent seasonal flu vaccine. The federal government’s chief medical officer, Jim Bishop, announced on 30 April that more time was needed to complete epidemiological and scientific investigations. “Given the ongoing and incomplete scientific and clinical case review, the moratorium on the use of seasonal influenza vaccine in children 5 years and less will continue,” he said. Figures released by the national Department of Health and Ageing show that 77 cases of febrile convulsion in children aged 5 or under and associated with the vaccination have recently been reported to the Therapeutic Goods Administration. Of these, 57 were in Western Australia, the only Australian state to provide free seasonal flu vaccination for all children aged 6 months to 4 years. It introduced the vaccination programme in 2008 after the highly publicised deaths of three young children with flu and because of concerns that this age group has the highest hospitalisation rates for flu. About 35% of children under 5 in Western Australia are estimated to have received at least one dose of flu vaccine in 2008 and 2009, but it is not yet known how many have been vaccinated this season, Paul Armstrong of the state’s health department told the BMJ. A range of experts have said that it is unclear whether the cases of fever relate to a specific batch or product or to inclusion of the pandemic vaccine in a trivalent vaccine. Three companies market seasonal flu vaccines in Australia. They contain the components recommended by the Australian Influenza Vaccine Committee for the 2010 season (A/H1N1, A/H3N2, and B) (www.tga.gov.au/committee/aivc.htm). The TGA is continuing to recommend the pandemic vaccine (active only against H1N1) for adults and children (www.tga.gov.au/alerts/medicines/fluvaccine.htm). Other possibilities being investigated are whether febrile illness has increased more broadly this winter or whether the Western Australian programme has uncovered an increased risk among young children in particular. Peter Richmond, a paediatrician in Perth, told ABC television this week that the association of fevers with the vaccination was striking (www.abc.net.au/7.30/content/2010/s2885203. htm). “This year has been something that I’ve never seen in 20 years as a paediatrician,” he said. “We have had a large number of children presenting to their doctors who were previously well who received the flu vaccine, and they had a very sudden onset of this high fever. And obviously for parents of young children it was very scary, and unfortunately some of these children actually had febrile convulsions.” Professor Bishop told the BMJ he had an “open mind” about whether there was a real increase in side effects. “In the meantime it is prudent and safe to proceed cautiously,” he said. An industry funded group, the Influenza Specialist Group, has said that Queensland’s government is also working closely with a local coroner regarding the death of a 2 year old girl who was found dead in her cot several hours after receiving a seasonal flu vaccine in early April (www.influenzaspecialistgroup.org.au/news-recent/143-seasonal-flu-vaccination-and-in-children-5-years-and-under-). Professor Bishop said that this case had not been reported to the Therapeutic Goods Administration. A statement from the Department of Health and Ageing said that batch testing of the vaccine by the Therapeutic Goods Administration and other independent experts had so far shown the vaccine to be satisfactory, while testing by the major flu vaccine manufacturer CSL had found no abnormalities in its product. Further testing and experiments are planned. Meanwhile, Julie Leask, a senior research fellow at the National Centre for Immunisation Research & Surveillance, said that public confidence in flu vaccination is likely to suffer, resulting in reduced vaccination coverage across all ages. Peter Collignon, an infectious diseases specialist at the Australian National University, Canberra, said that the situation showed the need for better surveillance and evaluation of flu vaccination. “We’re in a situation now where the government can’t tell us how many doses of the vaccine have been given out or how many people have side effects,” he said. Dr Armstrong said that the vaccination programme would resume in Western Australia only when it was clear that it was safe to do so. He said, “The first thing we need to do is to work out [whether there] is a problem and what the magnitude is, and then to work out what the problem is; we don’t know that at the moment.” http://www.ncbi.nlm.nih.gov/pubmed/20442237 BMJ • May 2010 Australia suspends seasonal flu vaccination of young children Adverse events following influenza vaccination in Australia— should we be surprised? There have been large numbers of major adverse reactions to this year’s seasonal influenza vaccine in Australia, and the vaccine has been suspended for use in children aged five and under [1,2]. These reactions have occurred across the country and involved multiple batches of vaccine [2]. In the state of Western Australia where the problem was first detected, reports suggest that of the 20,000 to 30,000 children vaccinated, more than 250 had adverse reactions and 55 had febrile convulsions before vaccination was suspended in young children [2]. Assuming all convulsions were in children, about one child in every 500 vaccinated had a febrile convulsion. Across Australia, media accounts indicate that more than 400 adverse reactions [3] including 77 cases of febrile convulsion [1] have been reported by regulators. While attention remains focused on reactions in very young children, reports suggest only one-third of the reactions may have occurred in children under five [4]. Although this situation has triggered considerable controversy in Australia, the story has attracted little to no media attention in the US and Europe. Similarly, the media has paid little attention to a US H1N1 federal vaccine safety advisory committee which recently reported detecting signals for Guillain-Barre syndrome (GBS), Bell’s palsy, and thrombocytopenia in the monovalent H1N1 (swine flu) vaccine [5]. The same monovalent H1N1 antigen component under review in the US is scheduled to be added to the US trivalent seasonal vaccine and is contained in the Australian trivalent seasonal vaccine and will be given to children, pregnant women and adults [6]. Data from a previous Australian study of H1N1 vaccine show that a large percentage of children developed fevers following vaccination — in children less than 3 years, between three and six in every ten vaccinated, depending on dose [7,8]. The data also show a dose response effect — the larger the vaccine dose, the more severe the harms. There was also an age relationship: children under the age of three developed fevers at more than twice the rate of older children [7,8]. The study was however underpowered to detect febrile convulsions at the current rates in Australia, with only 162 children below the age of three. The size problem was further aggravated by stratification by age group and antigen dose. Presumably the vaccine manufacturer CSL, which sponsored the trial, and Australia’s regulatory body, the Therapeutic Goods Administration (TGA), which used this data in approving the vaccine for children, were aware of these important findings. But authors of the study published earlier this year did not discuss the high incidence of fever associated with vaccination [7]; data were instead only reported in online-only supplementary tables [8]. Overall, the percentages of children under three who developed a fever after vaccination appear very high; thirty five per cent with the 15 ug dose and 62% after a 30 ug dose [7,8]. Of those that received a 7.5 ug dose in the seasonal influenza vaccine, 23% develop a fever of >38 degrees Celsius [6]. “The large number of children The large number of children suffering harms — and subsequent suspension of the vaccine — challenges the assumption that regulators are ensuring the safety and efficacy of all marketed therapeutics. Should we be surprised that these problems have occurred with influenza vaccine, a vaccine used for over 60 years, said to have “an established record of safety in all age groups”? [9] challenges the assumption that There are actually relatively little data on the effects of vaccinating young children against influenza [10]. Some manufacturers have even withheld data from public scrutiny amidst general indifference [10,11]. Evidence from all comparative influenza vaccine studies shows that harms, when they are investigated, are not reported consistently and systematically [10,11]. surprised that these problems have As pandemic vaccines are provided to governments and not individuals and manufacturers are indemnified for damages caused to users [12-14], there seem to be few incentives for investigation of harms. Last winter, the likelihood that a child without risk factors would die from swine flu was less than one in a million [15]. When such a high proportion of children develop moderate to severe febrile reactions to the influenza vaccine, it’s likely that more harm than good will occur by vaccinating the entire population. If such a large proportion of children develop high fevers, it is also likely that a substantial number will develop febrile convulsions as a result of vaccination. It is thus surprising the vaccine was approved for this age group. It is also surprising that more explicit warnings about the high risk of adverse reactions were not given to parents when their children were being vaccinated. Passive surveillance (as in Australia and elsewhere) is a relatively weak mechanism to detect and evaluate post-vaccination adverse events [16]. Unlike most drugs, vaccines are used on a population basis triggered by public health policy. As such, evidence of their safety and efficacy needs to be extraordinarily rigorous and evaluation methods and data should be open to independent scrutiny. We need much better and larger studies on both safety and efficacy before we roll out influenza vaccine programs to all populations, especially to children who appear to have much higher rates of adverse reactions. Finally, decisions to use a vaccine in a population must consider its safety profile, but principally its effectiveness. There is poor evidence on how well influenza vaccines prevent any influenza complications in children [10] and other age groups. There is good evidence that influenza vaccines study reports cherry pick results and achieve spurious notoriety [17]. Exposing human beings to uncertain effects is a risky business. Report available for purchase Try a 14-day free trial at BMJ.com or Google the title of the report for more information suffering harms — and subsequent suspension of the vaccine — regulators are ensuring the safety and efficacy of all marketed therapeutics. Should we be occurred with influenza vaccine, a vaccine used for over 60 years, said to have “an established record of safety in all age groups”? There are actually relatively little data on the effects of vaccinating young children against influenza. Some manufacturers have even withheld data from public scrutiny amidst general indifference. Evidence from all comparative influenza vaccine studies shows that harms, when they are investigated, are not reported consistently and systematically. As pandemic vaccines are provided to governments and not individuals and manufacturers are indemnified for damages caused to users, there seem to be few incentives for investigation of harms.” Journal Of Virology • June 2010 Viral Nucleic Acids in Live-Attenuated Vaccines: Detection of Minority Variants and an Adventitious Virus † Author Information Joseph G. Victoria,1,2 Chunlin Wang,3 Morris S. Jones,4 Crystal Jaing,5 Kevin McLoughlin,5 Shea Gardner,5 and Eric L. Delwart1,2* 1. Blood Systems Research Institute, San Francisco, California 94118 2. Dept. of Laboratory Medicine, University of California, San Francisco, California 94118 3. Stanford Genome Technology Center, Stanford, California 94304 4. Clinical Investigation Facility, David Grant USAF Medical Center, Travis AFB, California 94535 5. Lawrence Livermore National Laboratory, Livermore, California 94551 Highly effective, safe, and relatively inexpensive, live-attenuated viruses protect against numerous human and animal viral infections. Attenuation is achieved by genetically adapting viruses for replication in a different host species or under nonphysiological conditions, such that viruses lose their pathogenic potential in their original host species while remaining sufficiently antigenic to induce lasting protective immunity. Live-attenuated vaccines are highly efficacious due to the physiologic presentation of native antigen to the host’s immune system and include the earliest human vaccine developed by serial passages of rabies virus in rabbits. In very rare instances, one attenuated viral vaccine, the oral poliovirus vaccine (OPV), can accumulate mutations as well as recombine with other coinfecting enteroviruses and revert to a pathogenic state (18, 24). Attenuated live vaccines also carry a potential risk of contamination with adventitious viruses introduced during the attenuation process, from the cell lines used, and/or from the animal sera or other biologics often used in cell cultures. Very early Theiler’s yellow fever attenuated virus was once “stabi- lized” with human plasma thought to contain hepatitis B virus, resulting in many cases of hepatitis (5, 28). Some early Sabin poliovirus vaccines were contaminated with the simian virus 40 (SV40) polyomavirus from the monkey cells used to amplify polioviruses. While carcinogenic in rodents, SV40 has no epidemiologic association with human cancers (10). Avian leuko- sis virus (ALV) and endogenous avian virus (AEV) have been reported in attenuated vaccines grown in chicken embryo fi- broblasts (CEF), but extensive testing has also ruled out hu- man infections (14, 15). Vaccine-associated ALV and AEV are thought to originate from endogenous retroviruses in the chicken germ line (14, 15, 17). Because the chemical inactivation used in the manufacture of killed-virus vaccines is also likely to inactivate adventitious viruses, we focused on eight live-attenuated viruses, OPV (Biopolio), rubella (Meruvax-II), measles (Attenuvax), yellow fever (YF-Vax), human herpesvirus 3 (HHV-3) (Varivax), rotavirus (Rotarix and Rotateq), and multivalent measles/ mumps/rubella (MMR-II), to resequence the attenuated viruses and test for the presence of adventitious viruses after viral particle purification, massively parallel pyrosequencing, and viral sequence similarity searches. Vaccine nucleic acids were also analyzed using a panmicrobial microarray. Published ahead of print on 7 April 2010 † The authors have paid a fee to allow immediate free access to this article. Full Report: http://jvi.asm.org/content/84/12/6033.full.pdf “In very rare instances, one attenuated viral vaccine, the oral poliovirus vaccine (OPV), can accumulate mutations as well as recombine with other coinfecting enteroviruses and revert to a pathogenic state.” “Recently discovered contamination of 2 rotavirus vaccines by pig viruses is unlikely to pose a human health threat, according to the US Food and Drug Administration (FDA).” Journal Of The American Medical Association (JAMA) • July 2010 Medical News and Perspectives FDA: Benefits of Rotavirus Vaccination Outweigh Potential Contamination Risk by Bridget M. Kuehn Recently discovered contamination of 2 rotavirus vaccines by pig viruses is unlikely to pose a human health threat, according to the US Food and Drug Administration (FDA). The agency recommended in May that physicians resume use of one vaccine, Rotarix, and continue use of the other vaccine, RotaTeq. On March 22, the FDA had recommended that physicians suspend the use of Rotarix after the agency learned that academic researchers made the unexpected finding that the vaccine contained DNA from porcine circovirus 1 (PCV1), a virus that is common in US swine but not associated with illness in pigs or humans (Victoria JG et al. J Virol. 2010;84[12]:6033-6040). This finding was confirmed by scientists from the FDA and the vaccine’s maker, GlaxoSmithKline. http://jama.jamanetwork.com/article.aspx?articleid=186166 Expert Review Of Vaccines • October 2010 MF59; as a vaccine adjuvant: a review of safety and immunogenicity Author information El Sahly H. Department of Molecular Virology and Microbiology Baylor College of Medicine, Houston, TX 77030, USA hanae@bcm.edu Abstract Approximately 70 years passed between the licensing of alum salts as vaccine adjuvants and that of MF59, an oil-in-water emulsion, is currently licensed for use in the elderly as an adjuvant in seasonal influenza vaccines. Its mechanism of action is not fully understood, but enhancement of the interaction between the antigen and the dendritic cell seems to be involved. When used with seasonal influenza vaccines, an increase occurs in the hemagglutination inhibition antibody titers against some, but not all, seasonal vaccine influenza strains. The adjuvant effect is more pronounced when MF59 is combined with novel influenza antigens such as H9 and H5. The use of the adjuvant is associated with an increase in the frequency of local and systemic early post-vaccine adverse events (3-7 days), but no increase in adverse events was observed thereafter. Currently, MF59 is under evaluation as an adjuvant with other antigens such as pandemic influenza antigens and cytomegalovirus antigens. http://www.ncbi.nlm.nih.gov/pubmed/20923265 “Currently, MF59 [squalene] is under evaluation as an adjuvant with other antigens such as pandemic influenza antigens and cytomegalovirus antigens.” Toxicology • December 2010 Interindividual variations in the efficacy and toxicity of vaccines Author information Thomas C1, Moridani M. Department of Pharmaceutical Sciences School of Pharmacy, Lake Erie College of Osteopathic Medicine Bradenton, FL 34211, USA Abstract A number of currently available vaccines have shown significant differences in the magnitude of immune responses and toxicity in individuals undergoing vaccination. A number of factors may be involved in the variations in immune responses, which include age, gender, race, amount and quality of the antigen, the dose administered and to some extent the route of administration, and genetics of immune system. Hence, it becomes imperative that researchers have tools such as genomics and proteomics at their disposal to predict which set of population is more likely to be non-responsive or develop toxicity to vaccines. In this article, we briefly review the influence of pharmacogenomics biomarkers on the efficacy and toxicity of some of the most frequently reported vaccines that showed a high rate of variability in response and toxicity towards hepatitis B, measles, mumps, rubella, influenza, and AIDS/HIV. http://www.ncbi.nlm.nih.gov/pubmed/19837123 “A number of currently available vaccines have shown significant differences in the magnitude of immune responses and toxicity in individuals undergoing vaccination.” “When Eric Delwart couldn’t find the right email addresses online to contact GlaxoSmithKline ...” Nature Medicine • 2010 Vaccine contamination prompts safety review Megan Scudellari When Eric Delwart couldn’t find the right email addresses online to contact GlaxoSmithKline (GSK) in early February, he posted a good old-fashioned letter to the Belgian headquarters of the pharma giant to inform the company that one of its vaccines was contaminated with a pig virus. Months earlier, Delwart, a viral… Purchase this report full text PDF: $18 http://www.nature.com/nm/journal/v16/n5/full/nm0510-493.html Vaccine • April 2011 Plaque purification as a method to mitigate the risk of adventitious-agent contamination in influenza vaccine virus seeds Author information Murata H1, Macauley J, Lewis AM Jr, Peden K. Laboratory of DNA Viruses Division of Viral Products CBER, FDA, Bethesda, MD 20892, USA haruhiko.murata@fda.hhs.gov Abstract At present, the seed viruses for the manufacture of licensed seasonal inactivated influenza vaccines in the United States are derived from primary egg isolates as a result of concerns associated with adventitious agents. According to the prevailing view, the passage of influenza viruses through eggs serves as a filtering step to remove potential contaminating viruses. We have investigated the feasibility of addressing adventitious-agent risk by subjecting influenza virus to a plaque-purification procedure using MDCK cells. SV40 and canine adenovirus-1 (representing viruses for which MDCK cells are non-permissive and permissive, respectively) were used as challenge viruses to model agents of concern that might be co-isolated along with the influenza virus. By mixing influenza virus strain A/PR/8/34 with varying amounts of each challenge virus and then performing a plaque assay for influenza virus using MDCK cells, we have attempted to determine the efficiency by which the challenge virus is removed. Our data suggest that substantial removal can be achieved even after a single round of plaque purification. If cell-derived isolates were deemed to be acceptable following a plaque-purification procedure, the manufacture of seasonal influenza vaccine would be facilitated by: (1) the expansion of the repertoire of viruses from which seed virus candidates could be generated for licensed egg-derived vaccines as well as for vaccines manufactured in mammalian cells; and (2) the mitigation of adventitious-agent risk associated with the seed virus, and hence the elimination of the need to passage seed viruses in eggs for vaccines manufactured in mammalian cells. http://www.ncbi.nlm.nih.gov/pubmed/21354480 “At present, the seed viruses for the manufacture of licensed seasonal inactivated influenza vaccines in the United States are derived from primary egg isolates as a result of concerns associated with adventitious agents. According to the prevailing view, the passage of influenza viruses through eggs serves as a filtering step to remove potential contaminating viruses.” Vaccine • October 2011 Investigations of porcine circovirus type 1 (PCV1) in vaccine-related and other cell lines Hailun Ma, Syed Shaheduzzaman, Dhanya K. Willliams, Yamei Gao, Arifa S. Khan Division of Viral Products Office of Vaccines Research and Review Center for Biologics Evaluation and Research US Food and Drug Administration Bethesda, MD 20892, USA Abstract Porcine circovirus type 1 (PCV1) is highly prevalent in swine and was recently reported in some rotavirus vaccines. Since animal-derived raw materials, such as cells, trypsin, and serum, can be a major source of introducing virus contamination in biological products, we have investigated PCV1 in several cell lines obtained from ATCC that have broad use in research, diagnostics, or vaccine development. It is expected that these cell lines have been exposed to bovine and porcine viruses during their establishment and passage history due to the use of serum and trypsin that was not qualified according to current testing guidances or processed using new virus-inactivation methods. This study showed that Vero, MRC-5, and CEFs, which represent cell substrates used in some U.S. licensed vaccines, and other cell lines used in investigational vaccines, such as MDCK, HEK-293, HeLa, and A549, were negative for PCV1 using a nested PCR assay; some were also confirmed negative by infectivity analysis. However, MDBK cells, which are used for some animal vaccines, contained PCV1 sequences, although no virus was isolated. Although the results showed that PCV infection may not have occurred under previous culture conditions, the recent cases of vaccine contamination emphasizes the need for continued efforts to reduce the likelihood of introducing viruses from animal-derived materials used in product manufacture. http://www.sciencedirect.com/science/article/pii/S0264410X1101173X [click Science Direct] “Although the results showed that Porcine Circovirus infection may not have occurred under previous culture conditions, the recent cases of vaccine contamination emphasizes the need for continued efforts to reduce the likelihood of introducing viruses from animal-derived materials used in product manufacture.” Expert Review Of Respiratory Medicine • October 2011 Simian virus 40 transformation, malignant mesothelioma and brain tumors Author information Qi F1, Carbone M, Yang H, Gaudino G. University of Hawaii Cancer Center Honolulu, HI, USA Abstract Simian virus 40 (SV40) is a DNA virus isolated in 1960 from contaminated polio vaccines, that induces mesotheliomas, lymphomas, brain and bone tumors, and sarcomas, including osteosarcomas, in hamsters. These same tumor types have been found to contain SV40 DNA and proteins in humans. Mesotheliomas and brain tumors are the two tumor types that have been most consistently associated with SV40, and the range of positivity has varied about from 6 to 60%, although a few reported 100% of positivity and a few reported 0%. It appears unlikely that SV40 infection alone is sufficient to cause human malignancy, as we did not observe an epidemic of cancers following the administration of SV40-contaminated vaccines. However, it seems possible that SV40 may act as a cofactor in the pathogenesis of some tumors. In vitro and animal experiments showing cocarcinogenicity between SV40 and asbestos support this hypothesis. Full Report: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3241931/ “it seems possible that SV40 may act as a cofactor in the pathogenesis of some tumors. In vitro and animal experiments showing cocarcinogenicity between SV40 and asbestos support this hypothesis.” Journal of Public Health Management & Practice • November 2011 Using an Immunization Information System to Facilitate a Vaccine Recall in New York City 2007 Papadouka, Vikki PhD, MPH; Metroka, Amy MSW, MPH; Zucker, Jane R. MD, MSc Abstract Background In December 2007, Merck & Co, Inc, initiated a voluntary recall of 10 lots of PedvaxHIB, and 2 lots of COMVAX when the potential of contamination was identified during routine testing of the manufacturing equipment. Merck recommended that providers stop vaccinating children using these vaccine lots. “In December 2007, Merck & Co, Inc, initiated Objective To describe how the New York City (NYC) Immunization Information System was used in the effort to recall vaccines. of COMVAX when the potential of contamination was Methods Immediately following Merck’s announcement, NYC’s Bureau of Immunization used the New York Citywide Immunization Registry (CIR) to (a) fax and e-mail all pediatric facilities a letter informing them of the recall and asking that they immediately remove recalled vaccines from their refrigerators; (b) identify facilities that had used the recalled lots, on the basis of data reported to the CIR, and contact them individually by phone; and (c) monitor the success of the recall by examining the number of recalled doses administered and reported to the CIR before and after the recall. a voluntary recall of 10 lots of PedvaxHIB, and 2 lots identified during routine testing of the manufacturing equipment. Merck recommended that providers stop vaccinating children using these vaccine lots.” Results The alert was faxed and e-mailed to 1928 pediatric facilities informing them of the recall. In addition, the Bureau of Immunization identified 105 facilities that had reported doses of vaccine from the recalled lots to the CIR and called to ask them to check their refrigerators for remaining supplies and discontinue use of this vaccine. The number of doses with the affected lot numbers reported to the CIR decreased sharply following CIR recall notification. Furthermore, the Centers for Disease Control and Prevention and Merck reported the return of nearly 50% of publicly and privately purchased vaccines from the recalled lots that had been distributed to NYC providers. Conclusion Immunization Information Systems can be effective tools for quickly identifying providers in possession of recalled vaccine lots, particularly when lot numbers are well reported, and for facilitating rapid vaccine recall in support of vaccine safety. http://journals.lww.com/jphmp/pages/articleviewer.aspx?year=2011&issue=11010&article=00014&type=abstract “Because the product is itself a virus, traditional viral clearance steps are generally not included in the manufacturing process ...” PDA Journal Of Pharmaceutical Science And Technology • November 2011 Application of Risk Assessments in the Design of the Overall Viral Control Strategy Used during the Manufacture and Testing of Live Virus Vaccines Author information Pennathur S. MedImmune, LLC, One MedImmune Way, Gaithersburg, MD 20878 Abstract CONFERENCE PROCEEDING Proceedings of the PDA/FDA Adventitious Viruses in Biologics: Detection and Mitigation Strategies Workshop in Bethesda, MD, USA; December 1-3, 2010 Guest Editors: Arifa Khan (Bethesda, MD), Patricia Hughes (Bethesda, MD) and Michael Wiebe (San Francisco, CA) It is important to include a risk assessment process in the overall viral control strategy used during the manufacture and testing of live virus vaccines. Because the product is itself a virus, traditional viral clearance steps are generally not included in the manufacturing process, and there is normally no inactivation step in the manufacturing process either. The risk assessment is therefore necessary to identify potential sources for entry of adventitious agents into the vaccine, and to develop a strategy to minimize or eliminate the sources through which adventitious agents can enter the vaccine. The risk assessment can also be used to tailor the biosafety testing that is performed on raw materials, vaccine seeds, vaccine bulk materials, and final product. Biosafety testing is normally designed to ensure the detection of both known and unknown adventitious agents, but the results of the risk assessment can be used to put in place a biosafety testing strategy designed to maximize the detection of an adventitious agent that is potentially likely to be present in the vaccine. The risk assessment therefore enables the development of a comprehensive viral control strategy and provides a higher level of assurance that the vaccine will be free from contamination by adventitious agents. http://www.ncbi.nlm.nih.gov/pubmed/22294607 J Neurology, Neurosurgery And Psychiatry • 2012 Contamination with gangliosides in brain-derived rabies vaccine may trigger Guillain–Barré syndrome Author Information Hiromichi Sakai1, Faqeehah Mohamed Harun1, Naoki Yamamoto1,2, Nobuhiro Yuki1,2 1. Department of Microbiology, National University of Singapore, Singapore 2. Department of Medicine, National University of Singapore, Singapore Abstract Guillain–Barré syndrome (GBS) is an autoimmune-mediated peripheral neuropathy typically occurring after microbial infections such as Campylobacter jejuni enteritis. It can also occur following vaccinations such as the 1976 swine flu vaccine in the USA.1 GBS is divided into demyelinating and axonal subtypes. There is now good evidence that gangliosides or similar components trigger the development of axonal GBS.2 Axonal GBS associated with IgG anti-GM1 or anti-GD1a antibodies after bovine brain ganglioside administration have been recorded in several patients. Sensitisation of rabbits with bovine brain gangliosides or isolated GM1 produced a replica of axonal GBS. Based on these findings, it has been suggested that C jejuni components mimic human gangliosides GM1 and GD1a, and C jejuni infection induces the production of autoantibodies against the gangliosides that are expressed in the peripheral nerves, resulting in the limb weakness seen in GBS. By contrast, the mechanism by which certain vaccines elicit the development of GBS remains unresolved, although there have been studies to suggest that the 1976 swine flu vaccine could elicit anti-GM1 antibodies in mice and that the GM1 epitope was present in the influenza haemagglutinin.3 It is important to understand the pathogenesis of postvaccination GBS to allow safer vaccines to be developed. http://jnnp.bmj.com/content/83/4/467.extract “There is now good evidence that gangliosides or similar components trigger the development of axonal Guillain–Barré syndrome (GBS).” Biologicals • January 2012 A need for careful evaluation of endotoxin contents in acellular pertussis-based combination vaccines Michiyo Kataoka, Masaki Ochiai, Akihiko Yamamoto, Yoshinobu Horiuchi Department of Bacterial Pathogenesis and Infection Control National Institute of Infectious Diseases 4-7-1 Gakuen, Musashimurayama-shi Tokyo 208-0011, Japan Abstract Two batches each of diphtheria-tetanus-acellular pertussis vaccine (DTaP) and that combined with inactivated polio vaccine purchased from foreign markets were tested by mouse body weight decreasing (BWD) toxicity test and Limulus amaebocyte lysate (LAL) test. Three out of the four imported vaccine batches showed the levels of BWD toxicity even comparable to that of DT-whole cell pertussis vaccine. BWD toxicity test is based on endotoxin dose-dependent weight loss of mice and has been used for controlling endotoxin in DTaP. Although of the strong BWD toxicity of the imported vaccines, there was no marked difference in LAL test results between the imported vaccines and Japanese DTaP. However, one imported DTaP batch showed very strong interference with LAL activity of spiked lipopolysaccharide (LPS). The batch interfered not only with LAL activity but also with pyrogenicity and prostaglandin E2 induction activity. However, the pyrogenicity of the spiked LPS could be recovered from the precipitated fraction of the batch by treating with phosphate buffer to suggest the possibility of recovering in vivo toxicity. As an adequate in vitro test method could not be identified for controlling the safety of the interfering batch, an appropriate in vivo test would be required for testing such vaccines. http://www.sciencedirect.com/science/article/pii/S1045105611001977 “However, the pyrogenicity of the spiked LPS could be recovered from the precipitated fraction of the batch by treating with phosphate buffer to suggest the possibility of recovering in vivo toxicity. As an adequate in vitro test method could not be identified for controlling the safety of the interfering batch, an appropriate in vivo test would be required for testing such vaccines.” Pharmacoepidemiology And Drug Safety • April 2012 Vaccine discontinuation and switching following regulatory interventions in response to rotavirus vaccine contamination with porcine circovirus DNA fragments Author information Dore DD1, Turnbull BR, Seeger JD. Departments of Health Services Policy and Practice and Epidemiology Program in Public Health The Warren Alpert Medical School of Brown University Providence, RI, USA david_dore@brown.edu Abstract PURPOSE The Food and Drug Administration temporarily suspended monovalent rotavirus vaccine (RV1) use following discovery of contamination with porcine circovirus fragments and subsequently announced similar contamination of the pentavalent rotavirus vaccine (RV5) but recommended continued use of the product. We assessed the utilization of these vaccines in relation to the announcements. METHODS Using claims submitted to a commercial health insurer for administration of RV1 and RV5, we estimated the number of administrations of the vaccines and the extent of switching between RV1 and RV5. Procedure codes on submitted claims identified vaccine administrations among infants ≤ 1 year old through 16 June 2010. Among infants who received a first dose of vaccine before the corresponding announcement, and whose second dose was anticipated following the announcement, we estimated the number who received no second dose of rotavirus vaccine. RESULTS There were 31 178 RV1 initiators and 514 357 RV5 initiators. We observed a 93% reduction in RV1 doses in the month following the recommended suspension of use, coupled with extensive switching to RV5 (90% of subsequent doses) and a reduction in second RV1 doses (from 35.5% incomplete to 40.9%). There was a 15% increase in number of RV5 administrations following announcement of its contamination, with little switching to RV1 but with a possible decrease in completion. CONCLUSIONS Recommended suspension of RV1 use led to a substantial decrease in use and extensive switching to RV5. The announcement that RV5 was similarly contaminated, but without a corresponding recommendation to suspend use, had little effect on use. http://www.ncbi.nlm.nih.gov/pubmed/22290786 “The Food and Drug Administration temporarily suspended monovalent rotavirus vaccine (RV1) use following discovery of contamination with porcine circovirus fragments and subsequently announced similar contamination of the pentavalent rotavirus vaccine (RV5) but recommended continued use of the product.” Biologicals • July 2012 Investigation of porcine circovirus contamination in human vaccines Author Information Sarah M. Gillilanda, Lindsay Forresta, Heather Carrea, Adrian Jenkinsb, Neil Berryb, Javier Martina, Philip Minora, Silke Schepelmanna, Abstract DNA from porcine circovirus type 1 (PCV1) and 2 (PCV2) has recently been detected in two vaccines against rotaviral gastroenteritis from manufacturers A and B. We investigated if PCV1 sequences are present in other viral vaccines. We screened seeds, bulks and final vaccine preparations from ten manufacturers using qRT-PCR. We detected 3.8 × 103 to 1.9 × 107 PCV1 DNA copies/milliliter in live poliovirus seeds for inactivated polio vaccine (IPV) from manufacturer A, however, following inactivation and purification, the finished IPV was PCV1-negative. PCV1 DNA was not detectable in live polio preparations from other vaccine producers. There was no detectable PCV1 DNA in the measles, mumps, rubella and influenza vaccines analysed including material supplied by manufacturer A. We confirmed that the PCV1 genome in the rotavirus vaccine from manufacturer A is near full-length. It contains two mutations in the PCV cap gene, which may result from viral adaptation to Vero cells. Bulks of this vaccine contained 9.8 × 1010 to 1.8 × 1011 PCV1 DNA copies/millilitre and between 4.1 × 107 and 5.5 × 108 DNA copies were in the final doses. We found traces of PCV1 and PCV2 DNA in the rotavirus vaccine from manufacturer B. This highlights the issue of vaccine contamination and may impact on vaccine quality control. http://www.sciencedirect.com/science/article/pii/S1045105612000267 “We found traces of PCV1 and PCV2 DNA in the rotavirus vaccine from manufacturer B. This highlights the issue of vaccine contamination and may impact on vaccine quality control.” Voprosy Virusologii • September 2012 Analysis of the cell tissue culture contamination with the bovine viral diarrhea virus and mycoplasmas Author Information Uryvaevaev LV, Ionova KS, Dedova AV, Dedova LV, Selivanova TK, Parasiuk NA, Mezentseva MV, Kostina LV, Gushchina EA, Podcherniaeva RIa, Grebennikova TV. Abstract Different cell tissue cultures and commercial fetal calf sera (FTS) used in biological and virological research were screened for the bovine viral diarrhea virus (BVDV, Pestivirus genus, Flaviviridae family) and mycoplasma contamination. BVDV was detected using RT-PCR and Indirect immunofluorescence (with monoclonal antibodies) methods in 33% cases of the studied cell lines and in > 60% cases of FCS. BVDV was shown to present and reproduce in high spectra of human cell lines, as well as in monkey, pig, rabbit, goat, dog, and cat cells at high levels (up to 100-1000 genome-equivalent copies per cell) and reached up to 10(3)-10(7) genome-equivalent copies per serum ml. The molecular mechanisms of the long virus persistence without definite signs of destruction should be studied. http://www.ncbi.nlm.nih.gov/pubmed/?term=23248854 “Bovine Viral Diarrhea Virus was detected using RT-PCR and Indirect immunofluorescence (with monoclonal antibodies) methods in 33% cases of the studied cell lines and in > 60% cases of Fetal Calf Serum.” PLoS Pathogens • November 2012 A Wolf in Sheep’s Clothing: SV40 Co-opts Host Genome Maintenance Proteins to Replicate Viral DNA Gregory A. Sowd and Ellen Fanning* Richard C. Condit, Editor Department of Biological Sciences, Vanderbilt University Nashville, Tennessee, USA University of Florida, USA Abstract Simian virus 40 (SV40) was discovered in 1960 as a contaminant in early polio vaccines. Its discovery coincided with an explosion of knowledge in the new field of molecular biology, and SV40 was quickly adopted as a model to study eukaryotic genome structure, expression, replication, and cell growth regulation in cultured cells [1]. With a genome of only 5.2 kbp, SV40 relies heavily on host cell machinery to propagate, affording investigators a powerful tool to discover key host proteins that the virus manipulates. Indeed, a single multifunctional viral protein, the large tumor (T) antigen (Tag) (Figure 1A), is sufficient to orchestrate the replication of the viral mini-chromosome in infected monkey cells [2], [3]. The origin DNA binding domain of Tag binds specifically to the viral origin of DNA replication, and the C-terminal helicase domain of Tag unwinds parental DNA at SV40 replication forks. The development of a cell-free reaction containing purified Tag and primate cell extract enabled the identification of ten evolutionarily conserved host proteins that are necessary and sufficient, together with Tag, to replicate SV40 DNA in vitro [3], [4]. Thus, much remains to be learned about how SV40 infection activates DNA damage signaling and uses it to facilitate viral propagation. Full Report: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3493471/ “Simian virus 40 (SV40) was discovered in 1960 as a contaminant in early polio vaccines ... much remains to be learned about how SV40 infection activates DNA damage signaling and uses it to facilitate viral propagation.” Journal Of Inorganic Biochemistry • December 2012 “Medical practitioners in nine countries submitted samples of Detection of human papillomavirus (HPV) L1 gene DNA possibly bound to particulate aluminum adjuvant in the HPV vaccine Gardasil Gardasil (Merck & Co.) to be tested for the presence of human Author information Lee SH. Milford Hospital and Milford Molecular Laboratory 2044 Bridgeport Avenue, Milford, CT 06460, USA shlee01@snet.net Abstract Medical practitioners in nine countries submitted samples of Gardasil (Merck & Co.) to be tested for the presence of human papillomavirus (HPV) DNA because they suspected that residual recombinant HPV DNA left in the vaccine might have been a contributing factor leading to some of the unexplained post-vaccination side effects. A total of 16 packages of Gardasil were received from Australia, Bulgaria, France, India, New Zealand, Poland, Russia, Spain and the United States. A nested polymerase chain reaction (PCR) method using the MY09/MY11 degenerate primers for initial amplification and the GP5/GP6based nested PCR primers for the second amplification were used to prepare the template for direct automated cycle DNA sequencing of a hypervariable segment of the HPV L1 gene which is used for manufacturing of the HPV L1 capsid protein by a DNA recombinant technology in vaccine production. Detection of HPV DNA and HPV genotyping of all positive samples were finally validated by BLAST (Basic Local Alignment Search Tool) analysis of a 45-60 bases sequence of the computer-generated electropherogram. The results showed that all 16 Gardasil samples, each with a different lot number, contained fragments of HPV-11 DNA, or HPV-18 DNA, or a DNA fragment mixture from both genotypes. The detected HPV DNA was found to be firmly bound to the insoluble, proteinase-resistant fraction, presumably of amorphous aluminum hydroxyphosphate sulfate (AAHS) nanoparticles used as adjuvant. The clinical significance of these residual HPV DNA fragments bound to a particulate mineral-based adjuvant is uncertain after intramuscular injection, and requires further investigation for vaccination safety. http://www.ncbi.nlm.nih.gov/pubmed/23078778 papillomavirus (HPV) DNA because they suspected that residual recombinant HPV DNA left in the vaccine might have been a contributing factor leading to some of the unexplained post-vaccination side effects. A total of 16 packages of Gardasil were received from Australia, Bulgaria, France, India, New Zealand, Poland, Russia, Spain and the United States. The results showed that all 16 Gardasil samples, each with a different lot number, contained fragments of HPV-11 DNA, or HPV-18 DNA, or a DNA fragment mixture from both genotypes. The detected HPV DNA was found to be firmly bound to the insoluble, proteinase-resistant fraction, presumably of amorphous aluminum hydroxyphosphate sulfate (AAHS) nanoparticles used as adjuvant. The clinical significance of these residual HPV DNA fragments bound to a particulate mineral-based adjuvant is uncertain after intramuscular injection ...” “This enables quick, safe, and cost-effective vaccine production that would be required in case of a pandemic.” Journal of Laboratory Automation • December 2012 Automated production of plant-based vaccines and pharmaceuticals Author information Wirz H1, Sauer-Budge AF, Briggs J, Sharpe A, Shu S, Sharon A. Fraunhofer CMI, Brookline, MA 02446, USA Abstract A fully automated “factory” was developed that uses tobacco plants to produce large quantities of vaccines and other therapeutic biologics within weeks. This first-of-a-kind factory takes advantage of a plant viral vector technology to produce specific proteins within the leaves of rapidly growing plant biomass. The factory’s customdesigned robotic machines plant seeds, nurture the growing plants, introduce a viral vector that directs the plant to produce a target protein, and harvest the biomass once the target protein has accumulated in the plants-all in compliance with Food and Drug Administration (FDA) guidelines (e.g., current Good Manufacturing Practices). The factory was designed to be time, cost, and space efficient. The plants are grown in custom multiplant trays. Robots ride up and down a track, servicing the plants and delivering the trays from the lighted, irrigated growth modules to each processing station as needed. Using preprogrammed robots and processing equipment eliminates the need for human contact, preventing potential contamination of the process and economizing the operation. To quickly produce large quantities of protein-based medicines, we transformed a laboratory-based biological process and scaled it into an industrial process. This enables quick, safe, and cost-effective vaccine production that would be required in case of a pandemic. http://www.ncbi.nlm.nih.gov/pubmed/23015521 Archives Of Virology • January 2013 Genetic characterization of bovine viral diarrhoea (BVD) viruses: confirmation of the presence of BVD genotype 2 in Africa Author information Ularamu HG1, Sibeko KP, Bosman AB, Venter EH, van Vuuren M. Department of Veterinary Tropical Diseases Faculty of Veterinary Science, University of Pretoria Onderstepoort 0110, South Africa ularamuhussaini@yahoo.co.uk Abstract Bovine viral diarrhoea virus (BVDV) has emerged as one of the economically important pathogens in cattle populations, with a worldwide distribution and causing a complex of disease syndromes. Two genotypes, BVDV 1 and 2, exist and are discriminated on the basis of the sequence of the 5’ non-coding region (5’ NCR) using real-time PCR. Real-time PCR is more sensitive, specific, and less time-consuming than conventional PCR, and it has less risk of cross-contamination of samples. Limited information exists on BVDV genetic subtypes in South Africa. The aim of this study was to determine the genotypes of BVDV currently circulating in South African feedlots. A total of 279 specimens (219 tissue samples, 59 trans-tracheal aspirates and 1 blood sample) were collected from dead and living cattle with lesions or clinical signs compatible with BVDV infection. Pooled homogenates from the same animals were prepared, and total RNA was extracted. A screening test was performed on the pooled samples, and positive pools were investigated individually. A Cador BVDV Type 1/2 RT-PCR Kit (QIAGEN, Hilden, Germany) was used for the real-time PCR assay on a LightCycler(®) V2.0 real-time PCR machine (Roche Diagnostics, Mannheim, Germany). The results were read at 530 and 640 nm for BVDV 1 and 2, respectively. Bovine viral diarrhoea virus was detected in a total of 103 samples that included 91 tissue samples, 1 blood sample and 11 trans-tracheal aspirates. Eighty-five (82.5 %) of the strains were genotype 1 and 18 (17.5 %) were genotype 2. Comparing the sequencing data, genotypes 1 and 2 from the field strains did not cluster with vaccine strains currently used in feedlots in South Africa. The present study revealed the presence of BVDV genotype 2 in cattle in South Africa based on the high sequence similarity between genotype 2 field strains and strain 890 from North America. The presence of genotype 2 viruses that phylogenetically belong to different clusters and coexist in feedlots is consistent with the possibility of multiple virus introductions. These results represent the first documented evidence for the presence of BVDV genotype 2 in African cattle. http://www.ncbi.nlm.nih.gov/pubmed/?term=23011308 “These results represent the first documented evidence for the presence of BVDV genotype 2 in African cattle.” Journal Of Veterinary Diagnostic Investigation • January 2013 HoBi-like viruses: an emerging group of pestiviruses Author information Bauermann FV1, Ridpath JF, Weiblen R, Flores EF. Department of Preventive Veterinary Medicine, Virus Section Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil Abstract The genus Pestivirus is composed of 4 important pathogens of livestock: Bovine viral diarrhea virus 1 and 2 (BVDV-1 and BVDV-2), Classical swine fever virus (CSFV), and Border disease virus of sheep (BDV). BVDV are major pathogens of cattle, and infection results in significant economic loss worldwide. A new putative pestivirus species, tentatively called “HoBi-like,” “BVDV-3,” or “atypical pestiviruses,” was first identified in Europe in fetal bovine serum (FBS) imported from Brazil. HoBi-like viruses are related to BVDV at the genetic and antigenic levels. Further, the disease caused by these new viruses resembles clinical presentations historically associated with BVDV infection, including growth retardation, reduced milk production, respiratory disease, reduced reproductive performance, and increased mortality among young stock. Current BVDV diagnostic tests may fail to detect HoBi-like viruses or to differentiate between BVDV and HoBi-like viruses. Further, commercial tests for BVDV exposure, based on serological response, do not reliably detect HoBi-like virus exposure, and cross protection against HoBi-like viruses conferred by current BVDV vaccines is likely limited. As many HoBi-like viruses, characterized to date, were isolated from FBS originating from Brazil, it is assumed that the agent is probably widespread in Brazilian herds. Nevertheless, reports of natural infection in Southeast Asia and Europe demonstrate that these viruses are not restricted to South America. Increased demand for FBS has led to widespread distribution of FBS originating in HoBi-like virus endemic regions. The contamination of such FBS with HoBi-like viruses may lead to spread of this virus to other regions. http://www.ncbi.nlm.nih.gov/pubmed/?term=23345268 Full Report http://vdi.sagepub.com/content/25/1/6.long “Increased demand for fetal bovine serum has led to widespread distribution of fetal bovine serum originating in HoBi-like virus endemic regions. The contamination of such fetal bovine serum with HoBi-like viruses may lead to spread of this virus to other regions.” [fetal bovine serum is an important element of cell research and cell culture applications, especially in vaccine research. Estimated sales of fetal bovine serum in 2008 reached 700,000 liters globally] ISRN Biochemistry • May 2013 Nanoparticles for Brain Drug Delivery Massimo Masserini Department of Health Sciences University of Milano-Bicocca Via Cadore 48, 20900 Monza, Italy Abstract The central nervous system, one of the most delicate microenvironments of the body, is protected by the blood-brain barrier (BBB) regulating its homeostasis. BBB is a highly complex structure that tightly regulates the movement of ions of a limited number of small molecules and of an even more restricted number of macromolecules from the blood to the brain, protecting it from injuries and diseases. However, the BBB also significantly precludes the delivery of drugs to the brain, thus, preventing the therapy of a number of neurological disorders. As a consequence, several strategies are currently being sought after to enhance the delivery of drugs across the BBB. Within this review, the recently born strategy of brain drug delivery based on the use of nanoparticles, multifunctional drug delivery systems with size in the order of one-billionth of meters, is described. The review also includes a brief description of the structural and physiological features of the barrier and of the most utilized nanoparticles for medical use. Finally, the potential neurotoxicity of nanoparticles is discussed, and future technological approaches are described. The strong efforts to allow the translation from preclinical to concrete clinical applications are worth the economic investments. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4392984/ “several strategies are currently being sought after to enhance the delivery of drugs across the Blood Brain Barrier ... based on the use of nanoparticles ... the potential neurotoxicity of nanoparticles is discussed” Vaccine • July 2013 Transposon leads to contamination of clinical pDNA vaccine Author information van der Heijden I1, Gomez-Eerland R, van den Berg JH, Oosterhuis K, Schumacher TN, Haanen JB, Beijnen JH, Nuijen B. Department of Pharmacy & Pharmacology Slotervaart Hospital/The Netherlands Cancer Institute Amsterdam, The Netherlands Iris.vanderHeijden@slz.nl Abstract We report an unexpected contamination during clinical manufacture of a Human Papilomavirus (HPV) 16 E6 encoding plasmid DNA (pDNA) vaccine, with a transposon originating from the Escherichia coli DH5 host cell genome. During processing, presence of this transposable element, insertion sequence 2 (IS2) in the plasmid vector was not noticed until quality control of the bulk pDNA vaccine when results of restriction digestion, sequencing, and CGE analysis were clearly indicative for the presence of a contaminant. Due to the very low level of contamination, only an insert-specific PCR method was capable of tracing back the presence of the transposon in the source pDNA and master cell bank (MCB). Based on the presence of an uncontrolled contamination with unknown clinical relevance, the product was rejected for clinical use. In order to prevent costly rejection of clinical material, both in-process controls and quality control methods must be sensitive enough to detect such a contamination as early as possible, i.e. preferably during plasmid DNA source generation, MCB production and ultimately during upstream processing. However, as we have shown that contamination early in the process development pipeline (source pDNA, MCB) can be present below limits of detection of generally applied analytical methods, the introduction of “engineered” or transposon-free host cells seems the only 100% effective solution to avoid contamination with movable elements and should be considered when searching for a suitable host cell-vector combination. http://www.ncbi.nlm.nih.gov/pubmed/23707695 “We report an unexpected contamination during clinical manufacture of a Human Papilomavirus (HPV) 16 E6 encoding plasmid DNA (pDNA) vaccine, with a transposon originating from the Escherichia coli DH5 host cell genome. During processing, presence of this transposable element, insertion sequence 2 (IS2) in the plasmid vector was not noticed until quality control of the bulk pDNA vaccine when results of restriction digestion, sequencing, and CGE analysis were clearly indicative for the presence of a contaminant. Due to the very low level of contamination, only an insert-specific PCR method was capable of tracing back the presence of the transposon in the source pDNA and master cell bank (MCB).” Human Vaccines And Immunotherapy • November 2013 Investigation of a regulatory agency enquiry into potential porcine circovirus type 1 contamination of the human rotavirus vaccine, Rotarix: approach and outcome Author information Dubin G1, Toussaint JF, Cassart JP, Howe B, Boyce D, Friedland L, Abu-Elyazeed R, Poncelet S, Han HH, Debrus S. GlaxoSmithKline Vaccines; King of Prussia, PA USA Abstract In January 2010, porcine circovirus type 1 (PCV1) DNA was unexpectedly detected in the oral live-attenuated human rotavirus vaccine, Rotarix (GlaxoSmithKline [GSK] Vaccines) by an academic research team investigating a novel, highly sensitive analysis not routinely used for adventitious agent screening. GSK rapidly initiated an investigation to confirm the source, nature and amount of PCV1 in the vaccine manufacturing process and to assess potential clinical implications of this finding. The investigation also considered the manufacturer’s inactivated poliovirus (IPV)-containing vaccines, since poliovirus vaccine strains are propagated using the same cell line as the rotavirus vaccine strain. Results confirmed the presence of PCV1 DNA and low levels of PCV1 viral particles at all stages of the Rotarix manufacturing process. PCV type 2 DNA was not detected at any stage. When tested in human cell lines, productive PCV1 infection was not observed. There was no immunological or clinical evidence of PCV1 infection in infants who had received Rotarix in clinical trials. PCV1 DNA was not detected in the IPV-containing vaccine manufacturing process beyond the purification stage. Retrospective testing confirmed the presence of PCV1 DNA in Rotarix since the initial stages of its development and in vaccine lots used in clinical studies conducted pre- and post-licensure. The acceptable safety profile observed in clinical trials of Rotarix therefore reflects exposure to PCV1 DNA. The investigation into the presence of PCV1 in Rotarix could serve as a model for risk assessment in the event of new technologies identifying adventitious agents in the manufacturing of other vaccines and biological products. http://www.ncbi.nlm.nih.gov/pubmed/24056737 “In January 2010, porcine circovirus type 1 (PCV1) DNA was unexpectedly detected in the oral live-attenuated human rotavirus vaccine, Rotarix (GlaxoSmithKline [GSK] Vaccines) by an academic research team investigating a novel, highly sensitive analysis not routinely used for adventitious agent screening.” Biologicals • November 2013 Detection of contaminants in cell cultures, sera and trypsin Author information Pinheiro de Oliveira TF1, Fonseca AA Jr, Camargos MF, de Oliveira AM, Pinto Cottorello AC, Souza Ados R, de Almeida IG, Heinemann MB. Laboratório de Biologia Molecular/Laboratório de Diagnóstico de Doenças Virais Laboratório Nacional Agropecuário de Minas Gerais Pedro Leopoldo, Minas Gerais, Brazil oliveiratfp@yahoo.com.br Abstract The aim of this study was standardization and application of polymerase chain reaction (PCR) for the detection of contaminants in cell cultures, sera and trypsin. Five PCR protocols were standardized to assess the presence of genetic material from mycoplasma, porcine circovirus 1 (PCV1), bovine leukemia virus (BLV) or bovine viral diarrhea virus (BVDV) in cell culture samples. PCR reactions for the genes GAPDH and beta-actin were used to evaluate the efficiency of nucleic acid extraction. The PCR protocols were applied to 88 cell culture samples from eight laboratories. The tests were also used to assess potential contamination in 10 trypsin samples and 13 fetal calf serum samples from different lots from five of the laboratories. The results showed the occurrence of the following as DNA cell culture contaminants: 34.1% for mycoplasma, 35.2% for PCV1, 23.9% for BVDV RNA and 2.3% for BLV. In fetal calf sera and trypsin samples BVDV RNA and PCV1 DNA was detected. The results demonstrated that cell culture, sera and trypsin used by different laboratories show a high rate of contaminants. The results highlight the need for monitoring cell cultures and controlling for biological contaminants in laboratories and cell banks working with these materials. http://www.ncbi.nlm.nih.gov/pubmed/?term=24071554 “The results showed the occurrence of the following as DNA cell culture contaminants: 34.1% for mycoplasma, 35.2% for porcine circovirus 1, 23.9% for bovine viral diarrhea virus RNA and 2.3% for bovine leukemia virus. The results demonstrated that cell culture, sera and trypsin used by different laboratories show a high rate of contaminants. ” Journal Of Pharmaceutical Sciences • March 2014 Mechanism of a decrease in potency for the recombinant influenza A virus hemagglutinin H3 antigen during storage Author information Hickey JM1, Holtz KM, Manikwar P, Joshi SB, McPherson CE, Buckland B, Srivastava IK, Middaugh CR, Volkin DB. Department of Pharmaceutical Chemistry Macromolecule and Vaccine Stabilization Center University of Kansas, Lawrence, Kansas, 66047 Abstract The recombinant hemagglutinin (rHA)-based influenza vaccine Flublok® has recently been approved in the United States as an alternative to the traditional egg-derived flu vaccines. Flublok is a purified vaccine with a hemagglutinin content that is threefold higher than standard inactivated influenza vaccines. When rHA derived from an H3N2 influenza virus was expressed, purified, and stored for 1 month, a rapid loss of in vitro potency (∼50%) was observed as measured by the single radial immunodiffusion (SRID) assay. A comprehensive characterization of the rHA protein antigen was pursued to identify the potential causes and mechanisms of this potency loss. In addition, the biophysical and chemical stability of the rHA in different formulations and storage conditions was evaluated over time. Results demonstrate that the potency loss over time did not correlate with trends in changes to the higher order structure or hydrodynamic size of the rHA. The most likely mechanism for the early loss of potency was disulfide-mediated cross-linking of rHA, as the formation of non-native disulfidelinked multimers over time correlated well with the observed potency loss. Furthermore, a loss of free thiol content, particularly in specific cysteine residues in the antigen’s C-terminus, was correlated with potency loss measured by SRID. http://www.ncbi.nlm.nih.gov/pubmed/24425059 “When rHA derived from an H3N2 influenza virus was expressed, purified, and stored for 1 month, a rapid loss of in vitro potency (<50%) was observed as measured by the single radial immunodiffusion (SRID) assay.” Currents In Medical Chemistry • March 2014 Melting profiles may affect detection of residual HPV L1 gene DNA fragments in Gardasil Author information Lee SH. Milford Hospital and Milford Molecular Laboratory 2044 Bridgeport Avenue, Milford, CT 06460, USA shlee01@snet.net Abstract Gardasil® is a quadrivalent human papillomavirus (HPV) protein-based vaccine containing genotype-specific L1 capsid proteins of HPV-16, HPV-18, HPV-6 and HPV-11 in the form of virus-like-particles (VLPs) as the active ingredient. The VLPs are produced by a DNA recombinant technology. It is uncertain if the residual HPV L1 gene DNA fragments in the vaccine products are considered contaminants or excipients of the Gardasil® vaccine. Because naked viral DNA fragments, if present in the vaccine, may bind to the insoluble amorphous aluminum hydroxyphosphate sulfate (AAHS) adjuvant which may help deliver the foreign DNA into macrophages, causing unintended pathophysiologic effects, experiments were undertaken to develop tests for HPV L1 gene DNA fragments in the final products of Gardasil® by polymerase chain reaction (PCR) and direct DNA sequencing. The results showed that while the HPV-11 and HPV-18 L1 gene DNA fragments in Gardasil® were readily amplified by the common GP6/MY11 degenerate consensus primers, the HPV-16 L1 gene DNA may need specially designed nondegenerate PCR primers for amplification at different regions of the L1 gene and different stringency conditions for detection. These variable melting profiles of HPV DNA in the insoluble fraction of the Gardasil® vaccine suggest that the HPV DNA fragments are firmly bound to the aluminum AAHS adjuvant. All methods developed for detecting residual HPV DNA in the vaccine Gardasil® for quality assurance must take into consideration the variable melting profiles of the DNA to avoid false negative results. http://www.ncbi.nlm.nih.gov/pubmed/?term=24083601 “All methods developed for detecting residual HPV DNA in the vaccine Gardasil® for quality assurance must take into consideration the variable melting profiles of the DNA to avoid false negative results.” Journal Of Adolescent Health • March 2014 The role of media and the Internet on vaccine adverse event reporting: a case study of human papillomavirus vaccination Author information Eberth JM1, Kline KN2, Moskowitz DA3, Montealegre JR4, Scheurer ME5. 1. South Carolina Cancer Prevention and Control Program, University of South Carolina Columbia, South Carolina; Department of Epidemiology and Biostatistics, University of South Carolina Columbia, South Carolina; Department of Communication, University of Texas at San Antonio, San Antonio TX 2. Department of Epidemiology and Biostatistics, University of South Carolina, Columbia, South Carolina Department of Communication, University of Texas at San Antonio, San Antonio, Texas 3. Department of Epidemiology and Community Health, New York Medical College, NY, New York 4. Department of Epidemiology, Human Genetics and Environmental Sciences, University of Texas School of Public Health, Houston, Texas; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, Texas 5. Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, Texas, Department of Pediatrics Baylor College of Medicine, Houston, Texas Abstract “We demonstrate that media coverage and Internet search activity, in particular, may promote increased adverse event reporting. Public health officials who have long recognized PURPOSE This study aimed to determine the temporal association of print media coverage and Internet search activity with adverse events reports associated with the human papillomavirus vaccine Gardasil (HPV4) and the meningitis vaccine Menactra (MNQ) among United States adolescents. the importance of proactive engagement with METHODS We used moderated linear regression to test the relationships between print media reports in top circulating newspapers, Internet search activity, and reports to the Vaccine Adverse Event Reporting System (VAERS) for HPV4 and MNQ during the first 2.5 years after Food and Drug Administration approval. meaningful participation in Internet discussions.” RESULTS Compared with MNQ, HPV4 had more coverage in the print media and Internet search activity, which corresponded with the frequency of VAERS reports. In February 2007, we observed a spike in print media for HPV4. Although media coverage waned, Internet search activity remained stable and predicted the rise in HPV4-associated VAERS reports. CONCLUSIONS We demonstrate that media coverage and Internet search activity, in particular, may promote increased adverse event reporting. Public health officials who have long recognized the importance of proactive engagement with news media must now consider strategies for meaningful participation in Internet discussions. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3943880/ news media must now consider strategies for “Porcine circovirus-1 (PCV1) was recently identified as a contaminant in live Rotavirus vaccines ...” Vaccine • April 2014 Reduction of spiked porcine circovirus during the manufacture of a Vero cell-derived vaccine Author information Lackner C, Leydold SM, Modrof J, Farcet MR, Grillberger L, Schäfer B, Anderle H, Kreil TR. Global Pathogen Safety, Baxter BioScience, Vienna, Austria Cell Culture Fermentation, Baxter BioScience, Orth/Donau, Austria Vaccine R&D, Baxter BioScience, Orth/Donau, Austria Biologicals R&D, Baxter BioScience, Vienna, Austria Global Pathogen Safety, Baxter BioScience, Vienna, Austria Abstract Porcine circovirus-1 (PCV1) was recently identified as a contaminant in live Rotavirus vaccines, which was likely caused by contaminated porcine trypsin. The event triggered the development of new regulatory guidance on the use of porcine trypsin which shall ensure that cell lines and porcine trypsin in use are free from PCV1. In addition, manufacturing processes of biologicals other than live vaccines include virus clearance steps that may prevent and mitigate any potential virus contamination of product. In this work, artificial spiking of down-scaled models for the manufacturing process of an inactivated pandemic influenza virus vaccine were used to investigate inactivation of PCV1 and the physico-chemically related porcine parvovirus (PPV) by formalin and ultraviolet-C (UV-C) treatment as well as removal by the purification step sucrose gradient ultracentrifugation. A PCV1 infectivity assay, using a real-time PCR infectivity readout was established. The formalin treatment (0.05% for 48h) showed substantial inactivation for both PCV1 and PPV with reduction factors of 3.0log10 and 6.8log10, respectively, whereas UV-C treatment resulted in complete PPV (≥5.9log10) inactivation already at a dose of 13mJ/cm but merely 1.7log10 at 24mJ/cm(2) for PCV1. The UV-C inactivation results with PPV were confirmed using minute virus of mice (MVM), indicating that parvoviruses are far more sensitive to UV-C than PCV1. The sucrose density gradient ultracentrifugation also contributed to PCV1 clearance with a reduction factor of 2log10. The low pH treatment during the production of procine trypsin was investigated and showed effective inactivation for both PCV1 (4.5log10) and PPV (6.4log10). In conclusion, PCV1 in general appears to be more resistant to virus inactivation than PPV. Still, the inactivated pandemic influenza vaccine manufacturing process provides for robust virus reduction, in addition to the already implemented testing for PCV1 to avoid any contaminations. http://www.ncbi.nlm.nih.gov/pubmed/24560672 Vaccine • May 2014 Systematic evaluation of in vitro and in vivo adventitious virus assays for the detection of viral contamination of cell banks and biological products Author Information James Gombolda, Stephen Karakasidisa, Paula Niksab, John Podczasya, Kitti Neumanna, James Richardsonc, Nandini Sanec, Renita Johnson-Levac, Valerie Randolphd, Jerald Sadoffe, Phillip Minorf, Alexander Schmidtg, Paul Duncanh, Rebecca L. Sheetsi a .Charles River Laboratories, 358 Technology Drive, Malvern, PA 19355, United States b. Charles River Laboratories, 251 Ballardvale St. Wilmington, MA 01887, United States c. Advanced BioScience Laboratories, 9800 Medical Center Dr. Bldg. D, Rockville, MD 20850, United States d. Wyeth, 401N Middletown Rd., Pearl River, NY 10965, United States e. Crucell, Newtonweg 1, 2333 CP Leiden, PO Box 2048, 2301 CA Leiden, The Netherlands f. National Institute for Biologics Standards and Control, Blanche Lane, South Mimms, Potters Bar, UK g. GSK Vaccines, Rue de l’Insitut 89, 1330 Rixensart, Belgium (formerly NIH/NIAID) h. Merck and Co., Inc., WP17-101, 770 Sumneytown Pike, P.O. Box 4, West Point, PA 19486, United States i. NIH/NIAID Division of AIDS, 6700B Rockledge Dr., Rm. 5145, Bethesda, MD 20892, United States Abstract Viral vaccines and the cell substrates used to manufacture them are subjected to tests for adventitious agents, including viruses, contaminate. Some of the compendial methods (in vivo and in vitro in cell culture) were established in the mid-20th century. These methods have not been subjected to current assay validation, as new methods would need to be. This study was undertaken to provide insight into the breadth (selectivity) and sensitivity (limit of detection) of the routine methods, two such validation parameters. Sixteen viral stocks were prepared and characterized. These stocks were tested in serial dilutions by the routine methods to establish which viruses were detected by which methods and above what limit of detection. Sixteen out of sixteen viruses were detected in vitro, though one (bovine viral diarrhea virus) required special conditions to detect and another (rubella virus) was detected with low sensitivity. Many were detected at levels below 1 TCID50 or PFU (titers were established on the production cell line in most cases). In contrast, in vivo, only 6/11 viruses were detected, and 4 of these were detected only at amounts one or more logs above 1 TCID50 or PFU. Only influenza virus and vesicular stomatitis virus were detected at lower amounts in vivo than in vitro. Given the call to reduce, refine, or replace (3Rs) the use of animals in product safety testing and the emergence of new technologies for the detection of viruses, a re-examination of the current adventitious virus testing strategies seems warranted. Suggested pathways forward are offered. http://www.sciencedirect.com/science/article/pii/S0264410X14001947 “Given the call to reduce, refine, or replace (3Rs) the use of animals in product safety testing and the emergence of new technologies for the detection of viruses, a re-examination of the current adventitious virus testing strategies seems warranted. Suggested pathways forward are offered.” “The biopharmaceutical industry continues to face enormous pressure to accelerate time to market, improve productivity and efficiency, and reduce costs.” PDA Journal Of Pharmaceutical Science And Technology • July 2014 Advantages of single-use technology for vaccine fill-finish operations Author information Jenness E, Walker S. Process Solutions, Mobius Product Manager EMD Millipore Corporation, 80 Ashby Road, Bedford, MA sue.walker@emdmillipore.com Abstract The biopharmaceutical industry continues to face enormous pressure to accelerate time to market, improve productivity and efficiency, and reduce costs. Vaccine manufacturers face additional challenges, including small batch sizes, varied product portfolios, pandemic outbreaks that require rapid responses and highly potent ingredients that place large demands on cleaning processes. Given these pressures, single-use fill-finish assemblies can represent an attractive option for vaccine manufacturing facilities. This article describes the implementation of a single-use fill-finish system at a large vaccine manufacturer. The new assembly enabled flexibility while reducing set-up time, capital investment, cross-contamination risk, and cleaning requirements. LAY ABSTRACT Overall the biopharmaceutical industry is constantly being challenged to bring new products more quickly and efficiently to market while keeping costs as low as possible. One specific segment of this industry is the companies that manufacture vaccines. Vaccines present unique challenges because they tend to be made in smaller amounts for a larger number of individual products. The products can also be very potent, which can require special handling methods. Another challenge is the potential outbreak of a disease that may affect a large area or a large part of the population and would require immediate action. Single-use assemblies for filling the product into its final container are an attractive option for vaccine manufacturing facilities. This article describes the implementation of a single-use filling system at a large vaccine manufacturer. The new assembly was flexible enough to meet the demands of the manufacturer while allowing quick and efficient implementation with low upfront investment. http://www.ncbi.nlm.nih.gov/pubmed/25035260 Biologicals • September 2014 Adventitious agents in viral vaccines: Lessons learned from 4 case studies Author Information John Petricciania, Rebecca Sheetsb, Elwyn Griffiths, Ivana Knezevicd IABS, POB 1925, Palm Springs, CA 92263, USA Grimalkin Partners, 13401 Norden Drive, Silver Spring, MD 20906, USA The Farthings, Kingston Upon Thames, Surrey KT2 7PT, UK Group Lead, Norms and Standards for Biologicals Department of Essential Medicines and Health Products (EMP) Health Systems and Innovation (HIS) Cluster WHO L276, Avenue Appia 20, 1211 Geneva 27, Switzerland Abstract Since the earliest days of biological product manufacture, there have been a number of instances where laboratory studies provided evidence for the presence of adventitious agents in a marketed product. Lessons learned from such events can be used to strengthen regulatory preparedness for the future. We have therefore selected four instances where an adventitious agent, or a signal suggesting the presence of an agent, was found in a viral vaccine, and have developed a case study for each. The four cases are: a) SV40 in polio vaccines; b) bacteriophage in measles and polio vaccines; c) reverse transcriptase in measles and mumps vaccines; and d) porcine circovirus and porcine circovirus DNA sequences in rotavirus vaccines. The lessons learned from each event are discussed. Based in part on those experiences, certain scientific principles have been identified by WHO that should be considered in regulatory risk evaluation if an adventitious agent is found in a marketed vaccine in the future. http://www.sciencedirect.com/science/article/pii/S1045105614000748 “We have therefore selected four instances where an adventitious agent, or a signal suggesting the presence of an agent, was found in a viral vaccine, and have developed a case study for each. The four cases are: a) SV40 in polio vaccines; b) bacteriophage in measles and polio vaccines; c) reverse transcriptase in measles and mumps vaccines; and d) porcine circovirus and porcine circovirus DNA sequences in rotavirus vaccines.” Bundesgesundheitsblatt Gesundheitsforschung Gesundheitsschutz • October 2014 Viral safety of biological medicinal products Author information Stühler A1, Blümel J. Paul-Ehrlich-Institut Paul-Ehrlich-Straße 51-59 63225, Langen, Deutschland Abstract Viral safety of blood donations, plasma products, viral vaccines and gene therapy medicinal products, biotechnical-derived products and tissue and cell therapy products is a particular challenge. These products are manufactured using a variety of human or animal-derived starting materials and reagents; therefore, extensive testing of donors and of cell banks established for production is required. Furthermore, the viral safety of reagents, such as bovine sera, porcine trypsin and human transferrin or albumin needs to be considered. Whenever possible, manufacturing steps for inactivation or removal of viruses should be introduced; however, sometimes it is not possible to introduce such steps for tissues or cell-based medicinal products as the activity and viability of cells will be compromised. It might be possible to implement steps for inactivation or removal of potential contaminating enveloped viruses only for production of small and stable non-enveloped viral gene vectors. http://www.ncbi.nlm.nih.gov/pubmed/?term=25123140 “Viral safety of blood donations, plasma products, viral vaccines and gene therapy medicinal products, biotechnical-derived products and tissue and cell therapy products is a particular challenge.” Journal Of Pharmaceutical Science • November 2014 Historical Data Analyses and Scientific Knowledge Suggest Complete Removal of the Abnormal Toxicity Test as a Quality Control Test Joerg H O Garbe,1 Susanne Ausborn,1 Claire Beggs,2 Martin Bopst,3 Angelika Joos,4 Alexandra A Kitashova,5 OLga Kovbasenco,6 Claus-Dieter Schiller,1 Martina Schwinger,7 Natalia Semenova,8 Lilia Smirnova,9 Fraser Stodart,10 Thomas Visalli,11 and Lisette Vromans4 1. F. Hoffmann-La Roche Ltd., Pharma Global Technical Operations, Basel, Switzerland 2. AbbVie Ltd., Maidenhead, England 3. F. Hoffmann-La Roche Ltd., Roche Pharma and Early Development, Roche Innovation Center, Basel, Switzerland 4. MSD Europe Inc., Brussels, Belgium 5. GlaxoSmithKline, Moscow, Russian Federation 6. Genzyme, Moscow, Russian Federation 7. Novartis Pharma AG, Basel, Switzerland 8. Bristol-Myers Squibb, Moscow, Russian Federation 9. MSD Pharmaceuticals, Moscow, Russian Federation 10. Eisai Ltd, Hatfield, England 11. Eisai Inc, Woodcliff Lake, New Jersey Abstract In the early 1900s, the abnormal toxicity test (ATT) was developed as an auxiliary means to ensure safe and consistent antiserum production. Today, the ATT is utilized as a quality control (QC) release test according to pharmacopoeial or other regulatory requirements. The study design has not been changed since around 1940. The evidence of abnormal toxicity testing as a prediction for harmful batches is highly questionable and lacks a scientific rationale. Numerous reviews of historical ATT results have revealed that no reliable conclusions can be drawn from this QC measure. Modern pharmaceutical manufacturers have thorough control of the manufacturing process and comply with good manufacturing practice rules. Contaminants are appropriately controlled by complying with the validated manufacturing processes and strict QC batch release confirming batch-to-batch consistency. Recognizing that product safety, efficacy, and stability can be ensured with strict QC measures, nowadays most regulatory authorities do not require the ATT for most product classes. In line with the replacement, reduction, and refinement (3Rs) initiative, the test requirement has been deleted from approximately 80 monographs of the European Pharmacopoeia and for the majority of product classes in the United States. For these reasons, it is recommended that the ATT should be consistently omitted world-wide and be removed from pharmacopoeias and other regulatory requirements. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4278562/ [Here, several divisions of F. Hoffman-La Roche Ltd., AbbVie Ltd., divisions of MSD Europe inc., GlaxoSmithKline, Genzyme, Novartis Pharma AG, Bristol-Myers-Squibb and divisions of Eisai Ltd., write a report justifying the removal of the “Abnormal Toxicity Test” as a quality control element of vaccine production] Human Vaccines And Immunotherapeutics • 2014 Annual World Vaccine Congress 2014: a re-evaluation of the value proposition for increasing vaccine thermostability Author information Derwand R. Leukocare AG; Martinsried Munich, Germany Abstract The 14th Annual World Vaccine Congress was held in Washington DC, March 24-26, 2014 (http://www.terrapinn.com/vaccine2014). More than 400 experts from different regions participated in this scientific event for vaccine professionals from industry, academia, non-profit organizations and government to discuss challenges and successes from all the major vaccine stakeholders. In more than 70 presentations, round tables, and plenary discussions major topics like emerging and re-emerging infectious disease, vaccine production, and innovative technologies were debated. While most contributions focused on specific questions in vaccine research development, some like the one by a representative of the Bill and Melinda Gates Foundation (BMGF) reported about supply chain, logistics topics, and challenges in vaccine implementation. http://www.ncbi.nlm.nih.gov/pubmed/?term=25483655 “While most contributions focused on specific questions in vaccine research development, some like the one by a representative of the Bill and Melinda Gates Foundation (BMGF) reported about supply chain, logistics topics, and challenges in vaccine implementation.” Human Vaccines And Immunotherapeutics • 2014 Adjuvants and myeloid-derived suppressor cells: enemies or allies in therapeutic cancer vaccination Author information Fernández A1, Oliver L, Alvarez R, Fernández LE, Lee KP, Mesa C. Immunobiology Division Center of Molecular Immunology; Havana, Cuba Abstract Adjuvants are a critical but largely overlooked and poorly understood component included in vaccine formulations to stimulate and modulate the desired immune responses to an antigen. However, unlike in the protective infectious disease vaccines, adjuvants for cancer vaccines also need to overcome the effect of tumor-induced suppressive immune populations circulating in tumor-bearing individuals. Myeloid-derived suppressor cells (MDSC) are considered to be one of the key immunosuppressive populations that inhibit tumor-specific T cell responses in cancer patients. This review focuses on the different signals for the activation of the immune system induced by adjuvants, and the close relationship to the mechanisms of recruitment and activation of MDSC. This work explores the possibility that a cancer vaccine adjuvant may either strengthen or weaken the effect of tumorinduced MDSC, and the crucial need to address this in present and future cancer vaccines. http://www.ncbi.nlm.nih.gov/pubmed/?term=25483674 “This work explores the possibility that a cancer vaccine adjuvant may either strengthen or weaken the effect of tumor-induced Myeloid-derived suppressor cells ...” “This may affect the integrity of the adjuvant, alter its interaction with the drug substance or change the physical characteristics of the drug product.” Journal Of Pharmaceutical Sciences • February 2015 Shear effects on aluminum phosphate adjuvant particle properties in vaccine drug products Author information Kolade OO1, Jin W, Tengroth C, Green KD, Bracewell DG. The Advanced Centre for Biochemical Engineering Department of Biochemical Engineering University College London, Gordon Street, London WC1H 0AH, UK Abstract Adjuvant-containing drug products can be exposed to high levels of interfacial shear during manufacture. This may affect the integrity of the adjuvant, alter its interaction with the drug substance or change the physical characteristics of the drug product. In this study, a solid-liquid interfacial shear device was used to investigate the shear response of aluminum phosphate adjuvant alone and two adjuvant containing vaccine drug products (DP1 and DP2). The relationship between the shear sensitivity of each and its resuspension properties was determined. Changes in the particle dimensions of the bulk adjuvant were minimal at shear strain rates of 10,900 s(-1) . However, at 25,500 s(-1) , the median particle diameter was reduced from 6.2 to 3.5 μm and was marked by the presence of sub-micron fines. A formulation without drug substance and DP2 produced similar shear responses but with less impact on particle diameter. The behavior of DP1 was less predictable. Sheared DP1 was characterized by prolonged sedimentation because of the presence of fine particulates and required in excess of 300 rotations to resuspend after extended storage. The study confirms that the solid-liquid interfacial shear device may be applied to understand product shear sensitivity associated with vaccine manufacturing. http://www.ncbi.nlm.nih.gov/pubmed/?term=25175154 “The ability to accurately measure and report trace amounts of residual formaldehyde impurity in a vaccine product is not only critical in the product release but also a regulatory requirement.” Journal Of Pharmaceutical And Biomedical Analysis • March 2015 Determining trace amounts and the origin of formaldehyde impurity in Neisseria meningitidis A/C/Y/W-135-DT conjugate vaccine formulated in isotonic aqueous 1× PBS by improved C18-UPLC method Author information Gudlavalleti SK, Crawford EN, Tran NN, Orten DJ, Harder JD, Reddy JR. JN International Medical Corporation, 2720 N 84th Street, Omaha, NE 68134 USA Abstract The ability to accurately measure and report trace amounts of residual formaldehyde impurity in a vaccine product is not only critical in the product release but also a regulatory requirement. In many bacterial or viral vaccine manufacturing procedures, formaldehyde is used either at a live culture inactivation step or at a protein de-toxification step or at both. Reported here is a validated and improved C18-UPLC method (developed based on previously published C-8 HPLC method) to determine the traces of formaldehyde process impurity in a liquid form Neisseria meningitidis A/C/Y/W-135-DT conjugate vaccine formulated in isotonic aqueous 1× PBS. UPLC C-18 column and the conditions described distinctly resolved the 2,4-DNPH-HCHO adduct from the un-reacted 2,4-DNPH as detected by TUV detector at 360 nm. This method was shown to be compatible with PBS formulation and extremely sensitive (with a quantitation limit of 0.05 ppm) and aided to determine formaldehyde contamination sources by evaluating the in-process materials as a track-down analysis. Final nanogram levels of formaldehyde in the formulated single dose vialed vaccine mainly originated from the diphtheria toxoid carrier protein used in the production of the conjugate vaccine, whereas relative contribution from polysaccharide API was minimal. http://www.ncbi.nlm.nih.gov/pubmed/25668795 Biologicals • June 2015 Genetic detection and characterization of emerging HoBi-like viruses in archival foetal bovine serum batches Author Information M. Giammariolia, J.F. Ridpathb, E. Rossia, M. Bazzucchia, C. Casciaria, G.M. De Miaa a. Istituto Zooprofilattico Sperimentale dell’Umbria e delle Marche, via Salvemini 1, 06126 Perugia, Italy b. Ruminant Diseases and Immunology Research Unit, National Animal Disease Center, Agricultural Research Service, U.S. Department of Agriculture, 1920 Dayton Avenue, Ames, IA 50010, USA Abstract Bovine viral diarrhea viruses (BVDV) are members of the Pestivirus genus within the family Flaviviridae. Based on antigenic and nucleotide differences, BVDV are classified into two recognized species, BVDV-1 and BVDV-2. More recently, a new putative pestivirus species, tentatively called “HoBi-like”, has been associated with bovine viral diarrhea. HoBi-like viruses were first identified in fetal bovine serum (FBS) imported from Brazil. Subsequently, a number of HoBi-like viruses have been detected as contaminants in FBS or cell culture and in live ruminants. To further investigate the possible pestivirus contamination in commercially available FBS batches, 26 batches of FBS with various countries of origin, were tested in this study for the presence of bovine pestiviruses. All the 26 batches were positive by RT-PCR for at least one species of bovine pestiviruses. HoBi-like viruses were detected in 15 batches. Analysis of the 5’UTR and Npro sequences of 15 newly identified HoBi-like viruses combined with analysis of additional sequences from GenBank, identified 4 genetic groups tentatively named 3a–3d. The current study confirmed the presence of the emerging HoBi-like viruses in FBS products labeled with different geographic origins. This finding has obvious implications for the safety of biological products, such as cell lines and vaccines. http://www.sciencedirect.com/science/article/pii/S1045105615000536 “... a new putative pestivirus species, tentatively called “HoBi-like”, has been associated with bovine viral diarrhea. To further investigate the possible pestivirus contamination in commercially available Fetal Bovine Serum (FBS) batches, 26 batches of FBS with various countries of origin, were tested in this study for the presence of bovine pestiviruses. All the 26 batches were positive by RT-PCR for at least one species of bovine pestiviruses. HoBi-like viruses were detected in 15 batches.” Animal Health Research Reviews • June 2015 Pestivirus control programs: how far have we come and where are we going? Author information Moennig V1, Becher P1. Department of Infectious Diseases,Institute for Virology University of Veterinary Medicine Bünteweg 17,D-30559 Hannover,Germany Abstract Classical swine fever (CSF) is endemic in large parts of the world and it is a major threat to the pig industry in general. Vaccination and stamping out have been the most successful tools for the control and elimination of the disease. The systematic use of modified live vaccines (MLV), which are very efficacious and safe, has often preceded the elimination of CSF from regions or countries. Oral vaccination using MLV is a powerful tool for the elimination of CSF from wild boar populations. Bovine virus diarrhea (BVD) is endemic in bovine populations worldwide and programs for its control are only slowly gaining ground. With two genotypes BVD virus (BVDV) is genetically more diverse than CSF virus (CSFV). BVDV crosses the placenta of pregnant cattle resulting in the birth of persistently infected (PI) calves. PI animals shed enormous amounts of virus for the rest of their lives and they are the reservoir for the spread of BVDV in cattle populations. They are the main reason for the failure of conventional control strategies based on vaccination only. In Europe two different approaches for the successful control of BVD are being used: Elimination of PI animals without or with the optional use of vaccines, respectively. http://www.ncbi.nlm.nih.gov/pubmed/?term=26050577 “They are the main reason for the failure of conventional control strategies based on vaccination only. In Europe two different approaches for the successful control of Bovine virus diarrhea are being used: Elimination of persistently infected animals without or with the optional use of vaccines, respectively.” International Journal Of Nanomedicine • July 2015 Central nervous system toxicity of metallic nanoparticles Xiaoli Feng,1 Aijie Chen,1 Yanli Zhang,1 Jianfeng Wang,2 Longquan Shao,1 and Limin Wei2 1. Nanfang Hospital, Southern Medical University Guangzhou, People’s Republic of China 2. School and Hospital of Stomatology, Wenzhou Medical University Wenzhou, People’s Republic of China Abstract Nanomaterials (NMs) are increasingly used for the therapy, diagnosis, and monitoring of disease- or drug-induced mechanisms in the human biological system. In view of their small size, after certain modifications, NMs have the capacity to bypass or cross the blood–brain barrier. Nanotechnology is particularly advantageous in the field of neurology. Examples may include the utilization of nanoparticle (NP)-based drug carriers to readily cross the blood–brain barrier to treat central nervous system (CNS) diseases, nanoscaffolds for axonal regeneration, nanoelectromechanical systems in neurological operations, and NPs in molecular imaging and CNS imaging. However, NPs can also be potentially hazardous to the CNS in terms of nano-neurotoxicity via several possible mechanisms, such as oxidative stress, autophagy, and lysosome dysfunction, and the activation of certain signaling pathways. In this review, we discuss the dual effect of NMs on the CNS and the mechanisms involved. The limitations of the current research are also discussed. Summary There are still many unanswered questions concerning nanoneurotoxicity. For instance, after bypassing the BBB, where do NPs go? How do they leave the brain? The degradation of NP coatings and NP cores inside the cell environment is an important issue that deserves serious consideration when designing safe and functional NMs. No results have been reported on this issue to date. When NPs enter the body, the surface properties of NPs may change by adsorbing proteins from biological fluids (such as blood, plasma, or interstitial fluid), leading to a distinct new epitope, for example, protein corona exposure in the biological microenvironment. Furthermore, serum protein binding to the NPs can alter the surface charge and accelerate the cellular uptake of NPs through receptor-regulated endocytosis. However, so far, studies addressing the cell surface protein corona interactions with NPs remain limited. Data regarding the distribution of metal-based NPs in the brain parenchyma are scarce, including data regarding the disruption of the BBB and adverse brain alterations caused by metal-based NPs. The effects of the persistence of poorly soluble metal-based NPs are of particular concern, and few studies have considered the effect of NPs on the CNS. Full Report: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4498719/ “The effects of the persistence of poorly soluble metal-based nano-particles are of particular concern, and few studies have considered the effect of nano-particles on the Central Nervous System.” “Endotoxin was present in all tested samples and the final product.” PDA Journal Of Pharmaceutical Science And Technology • July 2015 Quality Control Testing for Tracking Endotoxin-Producing Gram-Negative Bacteria during the Preparation of Polyvalent Snake Antivenom Immunoglobulin Author information Sheraba NS1, Diab MR1, Yassin AS2, Amin MA3, Zedan HH3. Vacsera, The Holding Company for Biological Products and Vaccines, Giza, Egypt Department of Microbiology and Immunology, Faculty of Pharmacy, Cairo University, Cairo, Egypt Abstract Snake bites represent a serious public health problem, particularly in rural areas worldwide. Antitoxic sera preparations are antibodies from immunized animals and are considered to be the only treatment option. The purification of antivenom antibodies should aim at obtaining products of consistent quality, safety, efficacy, and adherence to good manufacturing practice principles. Endotoxins are an integral component of the outer cell surface of Gram-negative bacteria. They are common contaminates of the raw materials and processing equipment used in the manufacturing of antivenoms. In this work, and as a part of quality control testing, we establish and examine an environmental monitoring program for identification of potential sources of endotoxin-producing Gram-negative bacteria throughout the whole steps of antivenom preparation. In addition, we follow all the steps of preparation starting from crude plasma till finished product using a validated sterility and endotoxin testing.Samples from air, surface, and personnel were collected and examined through various stages of manufacturing for the potential presence of Gram-negative bacteria. A validated sterility and endotoxin test was carried out in parallel at the different production steps. The results showed that air contributed to the majority of bacterial isolates detected (48.43%), followed by surfaces (37.5%) and then personnel (14%). The most common bacterial isolates detected were Achromobacter xylosoxidans, Ochrobactrum anthropi, and Pseudomonas aeruginosa, which together with Burkholderia cepacia were both also detected in cleaning water and certain equipment parts. A heavy bacterial growth with no fungal contamination was observed in all stages of antivenom manufacturing excluding the formulation stage. All samples were positive for endotoxin including the finished product.Implementation and continued evaluation of quality assurance and quality improvement programs in aseptic preparation is essential in ensuring the safety and quality of these products. LAY ABSTRACT Antitoxic sera preparations are the only treatment option for snake bites worldwide. They are prepared by immunizing animals, usually horses, with snake venom and collecting horse plasma, which is then subjected to several purification steps in order to finally prepare the purified immunoglobulins. Components of the bacterial cell wall known as endotoxins can constitute a potential hazardous contamination known as pyrogen in antisera, which can lead to fever and many other adverse reactions to the person subjected to it.In this work, we monitored the environment associated with the different steps of production and purification of snake antivenom prepared from immunized horses. We examined the air quality, surface, and personnel for possible sources of contamination, particularly the presence of Gram-negative bacteria, which is the major source of endotoxin presence. We also monitored all stages of preparation by sterility and endotoxin testing. Our results showed that air contributed to the majority of bacterial isolates. Sterility testing revealed the presence of bacterial contamination in all the intermediate steps, as only the final preparation after filtration was sterile. Endotoxin was present in all tested samples and the final product. Good manufacturing practice procedures are essential in any facility involved in antisera production. http://www.ncbi.nlm.nih.gov/pubmed/26242786 “A possible disadvantage of using human cell lines is the potential for human-specific viral contamination ...” Critical Reviews In Biotechnology • September 2015 Human cell lines for biopharmaceutical manufacturing: history, status, and future perspectives Author information Dumont J1, Euwart D1, Mei B1, Estes S1, Kshirsagar R1. 1. Biogen, Cambridge, MA, USA Abstract Biotherapeutic proteins represent a mainstay of treatment for a multitude of conditions, for example, autoimmune disorders, hematologic disorders, hormonal dysregulation, cancers, infectious diseases and genetic disorders. The technologies behind their production have changed substantially since biotherapeutic proteins were first approved in the 1980s. Although most biotherapeutic proteins developed to date have been produced using the mammalian Chinese hamster ovary and murine myeloma (NS0, Sp2/0) cell lines, there has been a recent shift toward the use of human cell lines. One of the most important advantages of using human cell lines for protein production is the greater likelihood that the resulting recombinant protein will bear post-translational modifications (PTMs) that are consistent with those seen on endogenous human proteins. Although other mammalian cell lines can produce PTMs similar to human cells, they also produce non-human PTMs, such as galactose-a 1,3-galactose and N-glycolylneuraminic acid, which are potentially immunogenic. In addition, human cell lines are grown easily in a serum-free suspension culture, reproduce rapidly and have efficient protein production. A possible disadvantage of using human cell lines is the potential for human-specific viral contamination, although this risk can be mitigated with multiple viral inactivation or clearance steps. In addition, while human cell lines are currently widely used for biopharmaceutical research, vaccine production and production of some licensed protein therapeutics, there is a relative paucity of clinical experience with human cell lines because they have only recently begun to be used for the manufacture of proteins (compared with other types of cell lines). With additional research investment, human cell lines may be further optimized for routine commercial production of a broader range of biotherapeutic proteins. http://www.ncbi.nlm.nih.gov/pubmed/26383226 Transplant Infectious Disease • November 2015 High rate of vaccine failure after administration of acellular pertussis vaccine pre- and post-liver transplantation in children at a children’s hospital in Japan Author information Ito K1,2, Kasahara M3, Saitoh A1,4, Honda H5, Miyairi I1. 1. Division of Pediatric Infectious Diseases, Department of Medical Specialties, National Center for Child Health and Development, Tokyo, Japan 2. Department of Infectious Diseases, Tokyo Metropolitan Children’s Medical Center, Tokyo, Japan 3. Division of Transplant Surgery, Department of Surgical Subspecialties, National Center for Child Health and Development, Tokyo, Japan 4. Department of Pediatrics, Niigata University Graduate School of Medical and Dental Science, Niigata, Japan 5. Division of Infectious Diseases, Tokyo Metropolitan Tama General Medical Center, Tokyo, Japan Abstract We assessed the serological response to pertussis vaccines administered pre- and post-liver transplantation in 58 pediatric patients at a children’s hospital in Japan. A high rate of pertussis vaccine failure was observed, 44.8% against the pertussis toxin and 69.0% against filamentous hemagglutinin, with no difference in the seropositivity rate with respect to the timing of the vaccination during the peritransplant period. http://www.ncbi.nlm.nih.gov/pubmed/26565897 “A high rate of pertussis vaccine failure was observed, 44.8% against the pertussis toxin and 69.0% against filamentous hemagglutinin ...” Chapter Two Thimerosal • Ethyl Mercury 1972 - 2015 Environmental Sources Of Mercury Mercury Concentration Form Biological Significance 0.4ppb MetHg Median chronic intake of contaminated fish (0.4ug/kg body weight) causes delayed speech and autistic-like symptoms in male children (Corbett & Poor, 2008) 1.6ppb MetHg Provisional Tolerable Weekly Intake (PTWI) based on body weight for infants and pregnant women (1.6ug/kg; Food & Agricultural Association/World Health Organization 2006) 2.0ppb Inorganic Mercury US EPA limit for drinking water (US EPA, 2011) 200ppb Various Level in liquid that the US EPA classifies as hazardous waste based on toxocity characteristics (US EPA, 2010) 600ppb EtHg Concentration of mercury in vaccines containing trace amounts of thimerosal (0.3ug/0.5 ml. dose, or 600ug/L;Halsey, 1999) 25,000-50,000ppb EtHg Concentration in Thimerosal containing multi-dose influenza, meningococcal pneumococcal polysaccharide and diphtheria-tetanus vaccines (Offit & Jew, 2003) “The ubiquitous and largely unchecked place of Thimerosal in pharmaceuticals, therefore, represents a medical crisis.” Quoted from: “A review of Thimerosal (Merthiolate) and its ethyl mercury breakdown product: specific historical considerations regarding safety and effectiveness” by DA Geier, LK Sykes and MR Geier Postgraduate Medical Journal • July 1972 Six cases of poisoning after a parenteral organic mercurial compound (Merthiolate) J. H. M. Axton http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2495252/?page=5 Bulletin Of The World Health Organization • May 1976 An outbreak of organomercury poisoning among Iraqi farmers Al-Tikriti K, Al-Mufti AW. Abstract An outbreak of organomercury poisoning due to the consumption of treated grain by farmers and their families occurred in Iraq in 1971-72. A total of 6530 cases were admitted to hospital and of these 459 died. However, there were many more with minor symptoms of poisoning who consulted outpatient departments. This outbreak constituted the largest poisoning epidemic ever recorded. No age was exempt and no pronounced sex difference was apparent. The latent period of up to 60 days between dosage and the onset of symptoms was probably the major factor contributing to the size of the epidemic. Measures taken to limit the outbreak are outlined. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2366398/ “A total of 6530 cases were admitted to hospital and of these 459 died.” American Journal Of Obstetrics And Gynecology • October 1976 Mercury toxicity in the pregnant woman, fetus, and newborn infant A review Koos BJ, Longo LD. Abstract This paper reviews the reported cases of mercury poisoning in pregnancy and the data based on sources of contamination, maternal uptake, and distribution. It analyzes current knowledge of placental transfer of various mercury compounds, fetal uptake, and distribution. It identifies the embryopathic and fetal toxic effects of mercury in general while emphasizing the greater toxicity of methylmercury compounds. Since maternal exposure to methylmercury is primarily through fish consumption, it recommends that women of childbearing age should not consume more than 350 Gm. of fish per week. In addition, they should not be occupationally exposed to air concentrations of mercury vapor greater than 0.01 mg. per cubic meter, of inorganic and phenylmercuric compounds greater than 0.02 mg. per cubic meter, or any detectable concentration of methylmercury. http://www.ncbi.nlm.nih.gov/pubmed/786026 “This paper reviews the reported cases of mercury poisoning in pregnancy and the data based on sources of contamination, maternal uptake, and distribution. It analyzes current knowledge of placental transfer of various mercury compounds, fetal uptake, and distribution.” British Journal Of Industrial Medicine • May 1982 Elemental mercury exposure: peripheral neurotoxicity Levine SP, Cavender GD, Langolf GD, Albers JW. Abstract Nerve conduction tests were performed on the right ulnar nerve of factory workers exposed to elemental mercury vapour. Time integrated urine mercury indices were used to measure the degree of exposure. Workers with prolonged distal latencies had significantly higher urine mercury concentrations when compared with those with normal latencies. Significant correlations between increasing urine mercury concentrations and prolonged motor and sensory distal latencies were established. Elemental mercury can affect both motor and sensory peripheral nerve conduction and the degree of involvement may be related to time-integrated urine mercury concentrations. http://www.ncbi.nlm.nih.gov/pubmed/6279139 “Significant correlations between increasing urine mercury concentrations and prolonged motor and sensory distal latencies were established. Elemental mercury can affect both motor and sensory peripheral nerve conduction and the degree of involvement may be related to time-integrated urine mercury concentrations.” Annals Of Neurology • November 1988 Neurological abnormalities associated with remote occupational elemental mercury exposure Author information Albers JW1, Kallenbach LR, Fine LJ, Langolf GD, Wolfe RA, Donofrio PD, Alessi AG, Stolp-Smith KA, Bromberg MB. Department of Neurology University of Michigan, Ann Arbor Abstract We examined 502 subjects, 247 of whom had occupational elemental mercury exposures 20 to 35 years previously, to identify potential exposure-related neurological abnormalities. Few significant (p less than 0.05) differences existed between exposed and unexposed subjects. However, multiple linear regression analysis demonstrated several significant correlations between declining neurological function and increasing exposure as determined by urine mercury measurements from the exposure interval. Subjects with urine mercury peak levels above 0.6 mg/L demonstrated significantly decreased strength, decreased coordination, increased tremor, decreased sensation, and increased prevalence of Babinski and snout reflexes when compared with the remaining subjects. Furthermore, subjects with clinical polyneuropathy had significantly higher peak levels than normal subjects (0.85 vs 0.61 mg/L; p = 0.04), but not increased exposure duration (20.1 vs 20.8 quarters; p = 0.34), and 28% of subjects with peak levels above 0.85 mg/L had clinical evidence of polyneuropathy, compared with 10% of remaining subjects (p = 0.005). Although exposure was not age dependent, several neurological measures showed significant agemercury interaction, suggesting that natural neuronal attrition may unmask prior exposure-related subclinical abnormalities. http://www.ncbi.nlm.nih.gov/pubmed/2849369 “... multiple linear regression analysis demonstrated several significant correlations between declining neurological function and increasing exposure as determined by urine mercury measurements from the exposure interval. Subjects with urine mercury peak levels above 0.6 mg/L demonstrated significantly decreased strength, decreased coordination, increased tremor, decreased sensation, and increased prevalence of Babinski and snout reflexes when compared with the remaining subjects.” Journal Of Toxicology And Environmental Health. • 1989 Brain and tissue levels of mercury after chronic methylmercury exposure in the monkey Author information Rice DC1. Toxicology Research Division Health Protection Branch Health and Welfare Ottawa, Ontario, Canada Abstract Estimated half-lives of mercury following methylmercury exposure in humans are 52-93 d for whole body and 49-164 d for blood. In its most recent 1980 review, the World Health Organization concluded that there was no evidence to suggest that brain half-life differed from whole-body half-life. In the present study, female monkeys (Macaca fascicularis) were dosed for at least 1.7 yr with 10, 25, or 50 micrograms/kg.d of mercury as methylmercuric chloride. Dosing was discontinued, and blood half-life was determined to be about 14 d. Approximately 230 d after cessation of dosing, monkeys were sacrificed and organ and regional brain total mercury levels determined. One monkey that died while still being dosed had brain mercury levels three times higher than levels in blood. Theoretical calculations were performed assuming steady-state brain:blood ratios of 3, 5, or 10. Brain mercury levels were at least three orders of magnitude higher than those predicted by assuming the half-life in brain to be the same as that in blood. Estimated half-lives in brain were between 56 (brain:blood ratio of 3) and 38 (brain: blood ratio of 10) d. In addition, there was a dose-dependent difference in half-lives for some brain regions. These data clearly indicate that brain half-life is considerably longer than blood half-life in the monkey under conditions of chronic dosing. http://www.ncbi.nlm.nih.gov/pubmed/2499694 “These data clearly indicate that brain half-life is considerably longer than blood half-life in the monkey under conditions of chronic dosing.” “This review gives an up-to-date account of mercury’s physical and chemical properties and its interaction with biologically active sites pertinent to transport across the blood-brain barrier ...” Neuroscience & Biobehavioral Reviews • Summer 1990 Mercury neurotoxicity: Mechanisms of blood-brain barrier transport Michael Aschner *, 1, Judy Lynn Aschner *Department of Pharmacology and Toxicology and the Interdisciplinary Neuroscience Program Medical College, Albany, NY 12208, USA †Department of Pediatrics, Division of Neonatal Medicine Albany Medical College Albany, NY 12208, USA Abstract Mercury exists in a wide variety of physical and chemical states, each of which has unique characteristics of target organ toxicity. The classic symptoms associated with exposure to elemental mercury vapor (Hg0) and methylmercury (Ch3Hg+; MeHg) involve the central nervous system (CNS), while the kidney is the target organ for the mono- and divalent salts of mercury (Hg+ and Hg++, respectively). Physical properties and redox potentials determine the qualitative and quantitative differences in toxicity among inorganic mercury compounds, while the ability of MeHg to cross the blood-brain barrier accounts for its accumulation in the CNS and a clinical picture that is dominated by neurological disturbances. This review gives an up-to-date account of mercury’s physical and chemical properties and its interaction with biologically active sites pertinent to transport across the blood-brain barrier, a major regulator of the CNS millieu. http://www.sciencedirect.com/science/article/pii/S0149763405802179 Contact Dermatitis • March 1991 A probable role for vaccines containing thimerosal in thimerosal hypersensitivity Author information Osawa J1, Kitamura K, Ikezawa Z, Nakajima H. Department of Dermatology Yokohama City University School of Medicine Kanagawa, Japan Abstract We patch tested 141 patients with 0.05% aq. thimerosal and 222 patients with 0.05% aq. mercuric chloride, including 63 children. The frequency of positive patch test reactions to thimerosal was 16.3%. There was a marked preponderance in the young age groups after vaccination, while none of 36 infants (aged 3-48 months) reacted to thimerosal. Positive reactions to mercuric chloride were found in 23 (10.4%) of 222 patients. We also sensitized guinea pigs with diphtheriapertussis-tetanus (DPT) vaccine containing 0.01% thimerosal and succeeded in inducing hypersensitivity to thimerosal. From patch testing in humans and animal experiments, it is suggested that 0.01% thimerosal in vaccines can sensitize children, and that hypersensitivity to thimerosal is due to the thiosalicylic part of the molecule and correlates with photosensitivity to piroxicam. http://www.ncbi.nlm.nih.gov/pubmed/1868700?dopt=Abstract “... it is suggested that 0.01% thimerosal in vaccines can sensitize children ...” Environmental Research • February 1993 Psychological effects of low exposure to mercury vapor: application of a computer-administered neurobehavioral evaluation system Author information Liang YX1, Sun RK, Sun Y, Chen ZQ, Li LH. Department of Occupational Health Shanghai Medical University People’s Republic of China Abstract A computer-administered neurobehavioral evaluation system in a Chinese language version (NES-C) and a mood inventory of the profile of mood states (POMS) were applied to assess the psychological effects of low-level exposure to mercury vapor in a group of 88 workers (19 males and 69 females, with mean age of 34.2 years) exposed to mercury vapor (average duration of exposure 10.4 years). The well-matched group of 97 nonexposed workers was treated as the control. The intensity of current mercury vapor was relatively mild as reflected by the average level of mercury in the air of the workplace (0.033 mg/m3) and in urine (0.025 mg/liter). The results indicated that the profile of mood states posed was moving to the negative side in Hg-exposed group and most of the NES-C performances, in particular, the mental arithmetic, two-digit search, switching attention, visual choice reaction time, and finger tapping, were also significantly affected compared with those obtained from controls (P < 0.05-0.01). The present study and the previous study on the validation of the system suggest that the NES-C we developed is valid for the neurotoxicity screening among the working population exposed to neurotoxic agents. http://www.ncbi.nlm.nih.gov/pubmed/8472661 “The results indicated that the profile of mood states posed was moving to the negative side in mercury-exposed group and most of the NES-C performances, in particular, the mental arithmetic, two-digit search, switching attention, visual choice reaction time, and finger tapping, were also significantly affected compared with those obtained from controls ...” “... neurotoxic effects of inorganic mercury could be partially due to the irreversible blockade of voltage-activated calcium channels.” Brain Research • December 1993 Mercury (Hg2+) decreases voltage-gated calcium channel currents in rat DRG and Aplysia neurons M. Pekel, B. Platt, D. Büsselberg Abstract Inorganic mercury (Hg2+) reduced voltage-gated calcium channel currents irreversibility in two different preparations. In cultured rat dorsal root ganglion (DRG) neurons, studied with the whole cell patch clamp technique, a rapid concentration-dependent decrease in the L/N-type currents to a steady state was observed with an IC50 of 1.1 μM and a Hill coefficient of 1.3 T-currents were blocked with Hg2+ in the same concentration range (0.5–2 μM). With increasing Hg2+ concentrations a slow membrane current was additionally activated most obviously at concentrations over 2 μM Hg2+. This current was irreversible and might be due to the opening of other (nonspecific) ion channels by Hg2+. The current-voltage (I–V) relation of DRG neurons shifted to more positive values, suggesting a binding of Hg2+ to the channel protein and/or modifying its gating properties. In neurons of the abdominal ganglion of Aplysia californica, studied with the two electrode voltage clamp technique, a continous decrease of calcium channel currents was seen even with the lowest used concentration of Hg2+ (5 μM). A steady state was not reached and the effect was irreversible without any change on resting membrane currents, even with high concentrations (up to 50 μM). No shift of the I–V relation of the calcium channel currents was observed. Effects on voltage-activated calcium channel currents with Hg2+ concentrations such low have not been reported before. We conclude that neurotoxic effects of inorganic mercury could be partially due to the irreversible blockade of voltage-activated calcium channels. http://www.sciencedirect.com/science/article/pii/000689939391146J European Journal Of Pediatrics • August 1994 Mercury burden of human fetal and infant tissues Author information Drasch G1, Schupp I, Höfl H, Reinke R, Roider G. Institut für Rechtsmedizin München, Germany Abstract “The mercury of fetuses The total mercury concentrations in the liver (Hg-L), the kidney cortex (Hg-K) and the cerebral cortex (Hg-C) of 108 children aged 1 day-5 years, and the Hg-K and HgL of 46 fetuses were determined. As far as possible, the mothers were interviewed and their dental status was recorded. The results were compared to mercury concentrations in the tissues of adults from the same geographical area. The Hg-K (n = 38) and Hg-L (n = 40) of fetuses and Hg-K (n = 35) and Hg-C (n = 35) of older infants (11-50 weeks of life) correlated significantly with the number of dental amalgam fillings of the mother. The toxicological relevance of the unexpected high Hg-K of older infants from mothers with higher numbers of dental amalgam fillings is discussed. and mercury of older infants (11-50 weeks of life) CONCLUSION Future discussion on the pros and cons of dental amalgam should not be limited to adults or children with their own amalgam fillings, but also include fetal exposure. The unrestricted application of amalgam for dental restorations in women before and during the child-bearing age should be reconsidered. older infants from mothers with higher numbers http://www.ncbi.nlm.nih.gov/pubmed/7957411 correlated significantly with the number of dental amalgam fillings of the mother. The toxicological relevance of the unexpected high kidney cortex of of dental amalgam fillings is discussed.” Developmental Brain Research • March 1995 The effect of mercury vapour on cholinergic neurons in the fetal brain: studies on the expression of nerve growth factor and its low- and high-affinity receptors Author information Söderström S1, Fredriksson A, Dencker L, Ebendal T. Department of Developmental Neuroscience Uppsala University, Sweden Abstract The effects of mercury vapour on the production of nerve growth factor during development have been examined. Pregnant rats were exposed to two different concentrations of mercury vapour during either embryonic days E6-E11 (early) or E13-E18 (late) in pregnancy, increasing the postnatal concentration of mercury in the brain from 1 ng/g tissue to 4 ng/g tissue (low-dose group) or 11 ng/g (high-dose group). The effect of this exposure in offspring was determined by looking at the NGF concentration at postnatal days 21 and 60 and comparing these levels to age-matched controls from sham-treated mothers. Changes in the expression of mRNA encoding NGF, the low- and high-affinity receptors for NGF (p75 and p140 trk, respectively) and choline acetyltransferase (ChAT) were also determined. When rats were exposed to high levels of mercury vapour during early embryonic development there was a significant (62%) increase in hippocampal NGF levels at P21 accompanied by a 50% decrease of NGF in the basal forebrain. The expression of NGF mRNA was found to be unaltered in the dentate gyrus. The expression of p75 mRNA was significantly decreased to 39% of control levels in the diagonal band of Broca (DB) and to approximately 50% in the medial septal nucleus (MS) whereas no alterations in the level of trk mRNA expression were detectable in the basal forebrain. ChAT mRNA was slightly decreased in the DB and MS, significantly in the striatum. These findings suggest that low levels of prenatal mercury vapour exposure can alter the levels of the NGF and its receptors, indicating neuronal damage and disturbed trophic regulations during development. http://www.ncbi.nlm.nih.gov/pubmed/7781173 “These findings suggest that low levels of prenatal mercury vapour exposure can alter the levels of the NGF and its receptors, indicating neuronal damage and disturbed trophic regulations during development.” Canadian Journal Of Physiology • February 1996 Altered porphyrin metabolism as a biomarker of mercury exposure and toxicity Author information Woods JS. Department of Environmental Health University of Washington, Seattle, USA Abstract Changes in urinary porphyrin excretion patterns (porphyrin profiles) have been described in response to a variety of drugs and chemicals. The present studies were conducted to define the specific changes in the urinary porphyrin profile associated with prolonged exposure to mercury and mercury compounds. In rats, exposure for a prolonged period to mercury as methyl mercury hydroxide was associated with urinary porphyrin changes, which were uniquely characterized by highly elevated levels of 4- and 5-carboxyl porphyrins and by the expression of an atypical porphyrin (“precoproporphyrin”) not found in urine of unexposed animals. These distinct changes in urinary porphyrin concentrations were observed as early as 1-2 weeks after initiation of mercury exposure, and increased in a dose- and time-related fashion with the concentration of mercury in the kidney, a principal target organ of mercury compounds. Following cessation of mercury exposure, urinary porphyrin concentrations reverted to normal levels, consistent with renal mercury clearance. In human studies, a comparable change in the urinary porphyrin profile was observed among subjects with occupational exposure to mercury as mercury vapor sufficient to elicit urinary mercury levels greater than 20 micrograms/L. Urinary porphyrin profiles were also shown to correlate significantly with mercury body burden and with specific neurobehavioral deficits associated with low level mercury exposure. These findings support the utility of urinary porphyrin profiles as a useful biomarker of mercury exposure and potential health effects in human subjects. http://www.ncbi.nlm.nih.gov/pubmed/?term=8723034 “These findings support the utility of urinary porphyrin profiles as a useful biomarker of mercury exposure and potential health effects in human subjects.” Clinical Neuropathology • May 1996 Demonstration of mercury in the human brain and other organs 17 years after metallic mercury exposure Author information Opitz H1, Schweinsberg F, Grossmann T, Wendt-Gallitelli MF, Meyermann R. Department of Neuropathology University of Tübingen, Germany Abstract A male subject became exposed to metallic mercury vapor at work in 1973. He excreted 1,850 mg Hg/l urine initially. Controls of urine mercury excretion after D-penicillamine administration led to the assumption of a total body clearance of mercury latest since 1976. Subsequently he developed an organic psychosyndrome without detectable signs of classical mercurialism. He never returned to work again and died of lung cancer in 1990. In different organs (brain, kidney, and lung) which were sampled at autopsy elevated levels of mercury were documented by atomic absorption analysis. Histological examination of the tissue by the Danscher and Schroder method, which is specific for mercury, showed a highly positive staining in the majority of nerve cells and cells of other organs. Ultrastructurally mercury could be demonstrated by elemental x-ray analysis within lipofuscin deposits. The lipofuscin content was increased in the mercury positive nerve cells as demonstrated by a strong positive autofluorescence. http://www.ncbi.nlm.nih.gov/pubmed/?term=8793247 “He never returned to work again and died of lung cancer in 1990. In different organs (brain, kidney, and lung) which were sampled at autopsy elevated levels of mercury were documented by atomic absorption analysis.” Neurotoxicology • Fall 1996 Effect of subchronic mercury exposure on electrocorticogram of rats Author information Dési I1, Nagymajtényi L, Schulz H. Department of Public Health Albert Szent-Györgyi Medical University Szeged, Hungary Abstract Mercury is a neurotoxic compound causing irreversible disorders of the central and peripheral nervous system. In some of the previous human and experimental studies mercury also affected some functional neurological parameters such as EEG, and cortical evoked potentials. In the present study, the effect of subchronic (4, 8, and 12 weeks) relatively low-level (0.4, 0.8, and 1.6 mg/kg mercury in form of HgCl2, per os by gavage) treatment on the basic cortical activity was investigated. Certain parameters of electrocorticogram (ECoG) recorded simultaneously from the primary somatosensory, visual and auditory centres were analyzed. The results showed that mercury had a dose- and timedependent effect on the examined ECoG parameters, and the changes became significant by the end of the experiment of week 12. http://www.ncbi.nlm.nih.gov/pubmed/9086494 “Mercury is a neurotoxic compound causing irreversible disorders of the central and peripheral nervous system.” Neurotoxicology And Teratology • November 1997 Cognitive deficit in 7-year-old children with prenatal exposure to methylmercury Author information Grandjean P1, Weihe P, White RF, Debes F, Araki S, Yokoyama K, Murata K, Sørensen N, Dahl R, Jørgensen PJ. Institute of Community Health Odense University, Denmark p.grandjean@winsloew.ou.dk Abstract A cohort of 1022 consecutive singleton births was generated during 1986-1987 in the Faroe Islands. Increased methylmercury exposure from maternal consumption of pilot whale meat was indicated by mercury concentrations in cord blood and maternal hair. At approximately 7 years of age, 917 of the children underwent detailed neurobehavioral examination. Neuropsychological tests included Finger Tapping; HandEye Coordination; reaction time on a Continuous Performance Test; Wechsler Intelligence Scale for Children-Revised Digit Spans, Similarities, and Block Designs; Bender Visual Motor Gestalt Test; Boston Naming Test; and California Verbal Learning Test (Children). Clinical examination and neurophysiological testing did not reveal any clear-cut mercury-related abnormalities. However, mercury-related neuropsychological dysfunctions were most pronounced in the domains of language, attention, and memory, and to a lesser extent in visuospatial and motor functions. These associations remained after adjustment for covariates and after exclusion of children with maternal hair mercury concentrations above 10 microgram(s) (50 nmol/g). The effects on brain function associated with prenatal methylmercury exposure therefore appear widespread, and early dysfunction is detectable at exposure levels currently considered safe. http://www.ncbi.nlm.nih.gov/pubmed/9392777 “The effects on brain function associated with prenatal methylmercury exposure therefore appear widespread, and early dysfunction is detectable at exposure levels currently considered safe.” General Pharmacology • July 1999 Thimerosal: a versatile sulfhydryl reagent, calcium mobilizer, and cell function-modulating agent Author information Elferink JG. Department of Molecular Cell Biology, University of Leiden, The Netherlands Abstract An overview of the literature concerning the effects of thimerosal is presented. Because of its antibacterial effect, thimerosal is used for a variety of practical purposes such as antiseptic and preservative. In biomedical studies, thimerosal is used as a sulfhydryl reagent, and as a calcium-mobilizing agent. The ability of thimerosal to act as a sulfhydryl group is related to the presence of mercury. Relatively little study has been devoted to the mechanism of the reaction of thimerosal with the sulfhydryl group; the sulfhydryl reactive capacity is mostly concluded on the basis of inactivation of the effect by dithiothreitol (DTT). Thimersal causes a release of calcium from intracellular stores in many cells types; this is followed by an influx of extracellular calcium. Both InsP3- and ryanodine-sensitive calcium stores may be affected. Studies with permeabilized cells or organelles show that the effect of thimerosal on calcium is dependent on the concentration: low concentrations of thimerosal stimulate calcium release, high concentrations are inhibitory. This dependence is not found in intact cells. Thimerosal may activate or inhibit a number of cell functions. These are often related to the ability to release calcium or with the sulfhydryl reactivity. In platelets, thimerosal causes aggregation, increase of arachidonic acid metabolism, and exocytotic release of serotonin. In neutrophils, thimerosal causes, besides an increase of cytosolic free calcium, an increase of formyl-methionyl-leucyl-phenylalanine (fMLP)-activated leukotriene release, and a modulation of chemotactic migration and exocytosis. At low concentrations, thimerosal induces chemotactic migration of neutrophils, in the absence of other chemoattractants. The effect is also observed with thiosalicylic acid, indicating that the stimulation of migration was due to the thiosalicylic acid moiety of the thimerosal molecule. At higher concentrations, thimerosal causes inhibition of fMLP-activated migration. Low concentrations of thimerosal, but not of thiosalicylic acid, induced exocytotic enzyme release from neutrophils. High concentrations of thimerosal inhibited fMLP-activated exocytosis. The results point to an involvement of calcium mobilization and calcium influx of activation, and reaction with sulfhydryl groups for inhibition. http://www.ncbi.nlm.nih.gov/pubmed/?term=10428009 “Thimerosal may activate or inhibit a number of cell functions.” Journal Of Neurochemistry • January 2000 Mercury induces cell cytotoxicity and oxidative stress and increases beta-amyloid secretion and tau phosphorylation in SHSY5Y neuroblastoma cells Author information Olivieri G1, Brack C, Müller-Spahn F, Stähelin HB, Herrmann M, Renard P, Brockhaus M, Hock C. Neurobiology Laboratory Psychiatric University Hospital Basel, Switzerland Olivieri@ubaclu.unibas.ch Abstract Concentrations of heavy metals, including mercury, have been shown to be altered in the brain and body fluids of Alzheimer’s disease (AD) patients. To explore potential pathophysiological mechanisms we used an in vitro model system (SHSY5Y neuroblastoma cells) and investigated the effects of inorganic mercury (HgCl2) on oxidative stress, cell cytotoxicity, beta-amyloid production, and tau phosphorylation. We demonstrated that exposure of cells to 50 microg/L (180 nM) HgCl2 for 30 min induces a 30% reduction in cellular glutathione (GSH) levels (n = 13, p<0.001). Preincubation of cells for 30 min with 1 microM melatonin or premixing melatonin and HgCl2 appeared to protect cells from the mercury-induced GSH loss. Similarly, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) cytotoxicity assays revealed that 50 microg/L HgCl2 for 24 h produced a 50% inhibition of MTT reduction (n = 9, p<0.001). Again, melatonin preincubation protected cells from the deleterious effects of mercury, resulting in MTT reduction equaling control levels. The release of beta-amyloid peptide (Abeta) 1-40 and 1-42 into cell culture supernatants after exposure to HgCl2 was shown to be different: Abeta 1-40 showed maximal (15.3 ng/ml) release after 4 h, whereas Abeta 1-42 showed maximal (9.3 ng/ml) release after 6 h of exposure to mercury compared with untreated controls (n = 9, p<0.001). Preincubation of cells with melatonin resulted in an attenuation of Abeta 1-40 and Abeta 1-42 release. Tau phosphorylation was significantly increased in the presence of mercury (n = 9, p<0.001), whereas melatonin preincubation reduced the phosphorylation to control values. These results indicate that mercury may play a role in pathophysiological mechanisms of AD. http://www.ncbi.nlm.nih.gov/pubmed/10617124 “These results indicate that mercury may play a role in pathophysiological mechanisms of Alzheimer’s disease.” Journal Of Pediatrics • May 2000 Iatrogenic exposure to mercury after hepatitis B vaccination in preterm infants Author information Stajich GV1, Lopez GP, Harry SW, Sexson WR. Mercer University Southern School of Pharmacy Atlanta, Georgia 30341, USA Abstract Thimerosal, a derivative of mercury, is used as a preservative in hepatitis B vaccines. We measured total mercury levels before and after the administration of this vaccine in 15 preterm and 5 term infants. Comparison of pre- and post-vaccination mercury levels showed a significant increase in both preterm and term infants after vaccination. Additionally, post-vaccination mercury levels were significantly higher in preterm infants as compared with term infants. Because mercury is known to be a potential neurotoxin to infants, further study of its pharmacodynamics is warranted. http://www.ncbi.nlm.nih.gov/pubmed/10802503 “Comparison of pre- and post-vaccination mercury levels showed a significant increase in both preterm and term infants after vaccination.” MMWR Morbidity And Mortality Weekly Report • July 14, 2000 Summary of the joint statement on thimerosal in vaccines American Academy of Family Physicians American Academy of Pediatrics Advisory Committee on Immunization Practices Public Health Service Centers for Disease Control and Prevention (CDC) “AAFP, AAP, ACIP, and PHS recommend continuation of the Abstract current policy of moving rapidly to In June 2000, a joint statement on thimerosal in vaccines was prepared by the American Academy of Family Physicians (AAFP), the American Academy of Pediatrics (AAP), the Advisory Committee on Immunization Practices (ACIP), and the Public Health Service (PHS) in response to 1) the progress in achieving the national goal declared in July 1999 to remove thimerosal from vaccines in the recommended childhood vaccination schedule, and 2) results of recent studies that examined potential associations between exposure to mercury in thimerosal-containing vaccines and health effects. In this statement, AAFP, AAP, ACIP, and PHS recommend continuation of the current policy of moving rapidly to vaccines that are free of thimerosal as a preservative. Until adequate supplies are available, use of vaccines that contain thimerosal as a preservative is acceptable. vaccines that are free of thimerosal http://www.ncbi.nlm.nih.gov/pubmed/?term=10914930 as a preservative. Until adequate supplies are available, use of vaccines that contain thimerosal as a preservative is acceptable.” Drugs • 2001 Vaccines without thiomersal: why so necessary, why so long coming? Author information van’t Veen AJ. Department of Dermatology and Venereology Erasmus University Hospital Rotterdam-Dijkzigt Rotterdam, The Netherlands Abstract The inorganic mercurial thiomersal (merthiolate) has been used as an effective preservative in numerous medical and non-medical products since the early 1930s. Both the potential toxicity of thiomersal and sensitisation to thiomersal in relation to the application of thiomersal-containing vaccines and immunoglobulins, especially in children, have been debated in the literature. The very low thiomersal concentrations in pharmacological and biological products are relatively non-toxic, but probably not in utero and during the first 6 months of life. The developing brain of the fetus is most susceptible to thiomersal and, therefore, women of childbearing age, in particular, should not receive thiomersal-containing products. Definitive data of doses at which developmental effects occur are not available. Moreover, revelation of subtle effects of toxicity needs long term observation of children. The ethylmercury radical of the thiomersal molecule appears to be the prominent sensitiser. The prevalence of thiomersal hypersensitivity in mostly selected populations varies up to 18%, but higher figures have been reported. The overall exposure to thiomersal differs considerably between countries. In many cases a positive routine patch test to thiomersal should be considered an accidental finding without or, probably more accurately, with low clinical relevance. In practice, some preventive measures can be taken with respect to thiomersal hypersensitivity. However, with regard to the debate on primary sensitisation during childhood and renewed attention for a reduction of children’s exposure to mercury from all sources, the use of thiomersal should preferably be eliminated or at least be reduced. In 1999 the manufacturers of vaccines and immunoglobulins in the US and Europe were approached with this in mind. The potential toxicity in children seems to be of much more concern to them than the hidden sensitising properties of thiomersal. In The Netherlands, unlike many other countries, the exposure to thiomersal from pharmaceutical sources has already been reduced. Replacement of thiomersal in all products should have a high priority in all countries. http://www.ncbi.nlm.nih.gov/pubmed/?term=11368282 “The potential toxicity in children seems to be of much more concern to them [the vaccine manufacturers] than the hidden sensitising properties of thiomersal. Replacement of thiomersal in all products should have a high priority in all countries. In 1999 the manufacturers of vaccines and immunoglobulins in the US and Europe were approached with this in mind.” Medical Hypotheses • April 2001 Autism: a novel form of mercury poisoning Author information Bernard S1, Enayati A, Redwood L, Roger H, Binstock T. ARC Research, Cranford, New Jersey 07901, USA Abstract Autism is a syndrome characterized by impairments in social relatedness and communication, repetitive behaviors, abnormal movements, and sensory dysfunction. Recent epidemiological studies suggest that autism may affect 1 in 150 US children. Exposure to mercury can cause immune, sensory, neurological, motor, and behavioral dysfunctions similar to traits defining or associated with autism, and the similarities extend to neuroanatomy, neurotransmitters, and biochemistry. Thimerosal, a preservative added to many vaccines, has become a major source of mercury in children who, within their first two years, may have received a quantity of mercury that exceeds safety guidelines. A review of medical literature and US government data suggests that: (i) many cases of idiopathic autism are induced by early mercury exposure from thimerosal; (ii) this type of autism represents an unrecognized mercurial syndrome; and (iii) genetic and non-genetic factors establish a predisposition whereby thimerosal’s adverse effects occur only in some children. http://www.ncbi.nlm.nih.gov/pubmed/11339848 “A review of medical literature and US government data suggests that many cases of idiopathic autism are induced by early mercury exposure from thimerosal.” Neuroreport • May 2001 Retrograde degeneration of neurite membrane structural integrity of nerve growth cones following in vitro exposure to mercury Author information Leong CC1, Syed NI, Lorscheider FL. Faculty of Medicine Department of Physiology and Biophysics University of Calgary, Alberta, Canada Abstract Inhalation of mercury vapor (Hg0) inhibits binding of GTP to rat brain tubulin, thereby inhibiting tubulin polymerization into microtubules. A similar molecular lesion has also been observed in 80% of brains from patients with Alzheimer disease (AD) compared to age-matched controls. However the precise site and mode of action of Hg ions remain illusive. Therefore, the present study examined whether Hg ions could affect membrane dynamics of neurite growth cone morphology and behavior. Since tubulin is a highly conserved cytoskeletal protein in both vertebrates and invertebrates, we hypothesized that growth cones from animal species could be highly susceptible to Hg ions. To test this possibility, the identified, large Pedal A (PeA) neurons from the central ring ganglia of the snail Lymnoea stagnalis were cultured for 48 h in 2 ml brain conditioned medium (CM). Following neurite outgrowth, metal chloride solution (2 microl) of Hg, Al, Pb, Cd, or Mn (10(7) M) was pressure applied directly onto individual growth cones. Time-lapse images with inverted microscopy were acquired prior to, during, and after the metal ion exposure. We demonstrate that Hg ions markedly disrupted membrane structure and linear growth rates of imaged neurites in 77% of all nerve growth cones. When growth cones were stained with antibodies specific for both tubulin and actin, it was the tubulin/microtubule structure that disintegrated following Hg exposure. Moreover, some denuded neurites were also observed to form neurofibrillary aggregates. In contrast, growth cone exposure to other metal ions did not effect growth cone morphology, nor was their motility rate compromised. To determine the growth suppressive effects of Hg ions on neuronal sprouting, cells were cultured either in the presence or absence of Hg ions. We found that in the presence of Hg ions, neuronal somata failed to sprout, whereas other metalic ions did not effect growth patterns of cultured PeA cells. We conclude that this visual evidence and previous biochemical data strongly implicate Hg as a potential etiological factor in neurodegeneration. http://www.ncbi.nlm.nih.gov/pubmed/?term=11277574 “We found that in the presence of mercury ions, neuronal somata failed to sprout, whereas other metalic ions did not effect growth patterns of cultured PeA cells. We conclude that this visual evidence and previous biochemical data strongly implicate mercury as a potential etiological factor in neurodegeneration.” Neurotoxicology • October 2001 Predicted mercury concentrations in hair from infant immunizations: cause for concern Author information Redwood L1, Bernard S, Brown D. Coalition for Safe Minds, Cranford, NJ 07016, USA tlredwood@mindspring.com Abstract Mercury (Hg) is considered one of the worlds most toxic metals. Current thinking suggests that exposure to mercury occurs primarily from seafood contamination and rare catastrophic events. Recently, another common source of exposure has been identified. Thimerosal (TMS), a preservative found in many infant vaccines, contains 49.6% ethyl mercury (EtHg) by weight and typically contributes 25 microg of EtHg per dose of infant vaccine. As part of an ongoing review, the Food and Drug Administration (FDA) announced in 1999 that infants who received multiple TMS-preserved vaccines may have been exposed to cumulative Hg in excess of Federal safety guidelines. According to the centers for disease control (CDC) recommended immunization schedule, infants may have been exposed to 12.5 microg Hg at birth, 62.5 microg EtHg at 2 months, 50 microg EtHg at 4 months, 62.5 microg EtHg at 6 months, and 50 microg EtHg at approximately 18 months, for a total of 237.5 microg EtHg during the first 18 months of life, if all TMS-containing vaccines were administered. Neurobehavioral alterations, especially to the more susceptible fetus and infant, are known to occur after relatively low dose exposures to organic mercury compounds. In effort, to further elucidate the levels of ethyl mercury resulting from exposure to vaccinal TMS, we estimated hair Hg concentrations expected to result from the recommended CDC schedule utilizing a one compartment pharmacokinetic model. This model was developed to predict hair concentrations from acute exposure to methymercury (MeHg) in fish. Modeled hair Hg concentrations in infants exposed to vaccinal TMS are in excess of the Environmental Protection Agency (EPA) safety guidelines of 1 ppm for up to 365 days, with several peak concentrations within this period. More sensitive individuals and those with additional sources of exposure would have higher Hg concentrations. Given that exposure to low levels of mercury during critical stages of development has been associated with neurological disorders in children, including ADD, learning difficulties, and speech delays, the predicted hair Hg concentration resulting from childhood immunizations is cause for concern. Based on these findings, the impact which vaccinal mercury has had on the health of American children warrants further investigation. http://www.ncbi.nlm.nih.gov/pubmed/?term=11770890 “Given that exposure to low levels of mercury during critical stages of development has been associated with neurological disorders in children, including ADD, learning difficulties, and speech delays, the predicted hair ethyl mercury concentration resulting from childhood immunizations is cause for concern.” Molecular Psychiatry • 2002 The role of mercury in the pathogenesis of autism S Bernard, A Enayati, H Roger, T Binstock and L Redwood Safe Minds, Cranford, NJ, USA Autism Spectrum Disorder (ASD) is a neurodevelopmental disorder of unknown etiology in most cases. Studies of monozygotic twins report an average 60% concordance rate, indicating a role for both genetic and environmental factors in disease expression.1 Recent reviews in environmental health have suggested that early exposure to hazardous substances may underlie some cases of neurodevelopmental disorders, including ADHD, learning disabilities, and speech/language difficulties.2 In 1999, thimerosal used as a vaccine preservative was identified as a widespread source of organic mercury exposure in infants.3 Mercury (Hg), a heavy metal, is considered highly neurotoxic.4 The amount of mercury in vaccines, while small, exceeded USEPA safety guidelines on a cumulative basis.3 Certain individuals may exhibit severe adverse reactions to low doses of Hg which are otherwise largely benign to the majority of those exposed.5 Some individuals with idiopathic autism spectrum disorder may represent such a sensitive population. As summarized in this paper, disease characteristics suggest this possibility: (a) ASD traits are known to arise from mercury exposure; (b) onset of ASD symptoms is temporally associated with administration of immunizations; (c) the reported increase in the prevalence of autism in the 1990s closely follows the introduction of two mercury-containing vaccines; and (d) elevated mercury has been detected in biological samples of autistic patients. Since ASD may now affect as many as one in 150 US children,6 and since thimerosal is still used in many products worldwide, confirmation of thimerosal as an environmental agent in autism pathogenesis has important societal and patient implications. Full Report http://www.nature.com/mp/journal/v7/n2s/pdf/4001177a.pdf “... onset of ASD symptoms is temporally associated with administration of immunizations; the reported increase in the prevalence of autism in the 1990s closely follows the introduction of two mercury-containing vaccines; and elevated mercury has been detected in biological samples of autistic patients.” Genes And Immunity • August 2002 Biochemical and molecular basis of thimerosal-induced apoptosis in T cells: a major role of mitochondrial pathway Author information Makani S1, Gollapudi S, Yel L, Chiplunkar S, Gupta S. Cellular and Molecular Immunology Laboratories Division of Basic and Clinical Immunology University of California, Irvine 92697, USA Abstract The major source of thimerosal (ethyl mercury thiosalicylate) exposure is childhood vaccines. It is believed that the children are exposed to significant accumulative dosage of thimerosal during the first 2 years of life via immunization. Because of health-related concerns for exposure to mercury, we examined the effects of thimerosal on the biochemical and molecular steps of mitochondrial pathway of apoptosis in Jurkat T cells. Thimerosal and not thiosalcylic acid (non-mercury component of thimerosal), in a concentration-dependent manner, induced apoptosis in T cells as determined by TUNEL and propidium iodide assays, suggesting a role of mercury in T cell apoptosis. Apoptosis was associated with depolarization of mitochondrial membrane, release of cytochrome c and apoptosis inducing factor (AIF) from the mitochondria, and activation of caspase9 and caspase-3, but not of caspase-8. In addition, thimerosal in a concentration-dependent manner inhibited the expression of XIAP, cIAP-1 but did not influence cIAP-2 expression. Furthermore, thimerosal enhanced intracellular reactive oxygen species and reduced intracellular glutathione (GSH). Finally, exogenous glutathione protected T cells from thimerosal-induced apoptosis by upregulation of XIAP and cIAP1 and by inhibiting activation of both caspase-9 and caspase-3. These data suggest that thimerosal induces apoptosis in T cells via mitochondrial pathway by inducing oxidative stress and depletion of GSH. http://www.ncbi.nlm.nih.gov/pubmed/?term=12140745 “The major source of thimerosal (ethyl mercury thiosalicylate) exposure is childhood vaccines. It is believed that the children are exposed to significant accumulative dosage of thimerosal during the first 2 years of life via immunization. These data suggest that thimerosal induces apoptosis in T cells via mitochondrial pathway by inducing oxidative stress and depletion of intracellular glutathione.” Society for Experimental Biology and Medicine • 2003 Neurodevelopmental Disorders after Thimerosal-Containing Vaccines: A Brief Communication Mark Geier And David A. Geier The Genetic Centers of America Silver Spring, Maryland 20905 Abstract We were initially highly skeptical that differences in the concentrations of thimerosal in vaccines would have any effect on the incidence rate of neurodevelopmental disorders after childhood immunization. This study presents the first epidemiologic evidence, based upon tens of millions of doses of vaccine administered in the United States, that associates increasing thimerosal from vaccines with neurodevelopmental disorders. Specifically, an analysis of the Vaccine Adverse Events Reporting System (VAERS) database showed statistical increases in the incidence rate of autism (relative risk [RR] = 6.0), mental retardation (RR = 6.1), and speech disorders (RR = 2.2) after thimerosalcontaining diphtheria, tetanus, and acellular pertussis (DTaP) vaccines in comparison with thimerosal-free DTaP vaccines. The male/female ratio indicated that autism (17) and speech disorders (2.3) were reported more in males than females after thimerosal-containing DTaP vaccines, whereas mental retardation (1.2) was more evenly reported among male and female vaccine recipients. Controls were employed to determine if biases were present in the data, but none were found. It was determined that overall adverse reactions were reported in similar-aged populations after thimerosal-containing DTaP (2.4 ± 3.2 years old) and thimerosal-free DTaP (2.1 ± 2.8 years old) vaccinations. Acute control adverse reactions such as deaths (RR = 1.0), vasculitis (RR = 1.2), seizures (RR = 1.6), ED visits (RR = 1.4), total adverse reactions (RR = 1.4), and gastroenteritis (RR = 1.1) were reported similarly after thimerosal- containing and thimerosal-free DTaP vaccines. An association between neurodevelopmental disorders and thimerosal-containing DTaP vaccines was found, but additional studies should be conducted to confirm and extend this study. In recent years, thimerosal, an organic mercury compound that is metabolized to ethylmercury and thiosalicylate and has been present since the 1930s as a preservative in some vaccines and pharmaceutical products to prevent bacterial and fungal contamination, has come under scrutiny. It was determined by the U.S. Food and Drug Administration (FDA) in 1999 under the recommended childhood immunization schedule that infants might be exposed to cumulative doses of ethylmercury that exceed some federal safety guidelines established for exposure to methylmercury, another form of organic mercury (1). The hypothesis that exposure to thimerosal-containing vaccines could be associated with neurodevelopmental disorders is not established and rests on indirect and incomplete information, primarily from analogies with methylmercury and levels of maximum mercury exposure from vaccines given in children. The hypothesis is biologically possible, but the possible relationship between thimerosal from vaccines and neurodevelopmental disorders of autism, attention deficit/hyperactivity disorder (ADHD), and speech or language delay remains seriously suspect. As of the present, there are no peer-reviewed epidemiological studies in the scientific literature examining the potential association between thimerosal-containing vaccines and neurodevelopmental disorders. Here, we show the first epidemiologic evidence, based upon tens of millions of doses of vaccine administered in the United States, that associates increasing thimerosal from vaccines with neurodevelopmental disorders. Full Report: http://www.autismhelpforyou.com/EXPERT%20PAPER%20-%20Geier%20-%20Internet%20File.pdf “... we show the first epidemiologic evidence, based upon tens of millions of doses of vaccine administered in the United States, that associates increasing thimerosal from vaccines with neurodevelopmental disorders.” Neurotoxic Research • February 2003 Neurotoxicity of organomercurial compounds Author information Sanfeliu C1, Sebastià J, Cristòfol R, Rodríguez-Farré E. Department of Pharmacology and Toxicology Institut d’Investigacions Biomèdiques de Barcelona, CSIC, IDIBAPS Rossellò 161, 08036 Barcelona, Spain cspfat@iibb.csic.es Abstract Mercury is a ubiquitous contaminant, and a range of chemical species is generated by human activity and natural environmental change. Elemental mercury and its inorganic and organic compounds have different toxic properties, but all them are considered hazardous in human exposure. In an equimolecular exposure basis, organomercurials with a short aliphatic chain are the most harmful compounds and they may cause irreversible damage to the nervous system. Methylmercury (CH(3)Hg(+)) is the most studied following the neurotoxic outbreaks identified as Minamata disease and the Iraq poisoning. The first description of the CNS pathology dates from 1954. Since then, the clinical neurology, the neuropathology and the mechanisms of neurotoxicity of organomercurials have been widely studied. The high thiol reactivity of CH(3)Hg(+), as well as all mercury compounds, has been suggested to be the basis of their harmful biological effects. However, there is clear selectivity of CH(3)Hg(+) for specific cell types and brain structures, which is not yet fully understood. The main mechanisms involved are inhibition of protein synthesis, microtubule disruption, increase of intracellular Ca(2+) with disturbance of neurotransmitter function, oxidative stress and triggering of excitotoxicity mechanisms. The effects are more damaging during CNS development, leading to alterations of the structure and functionality of the nervous system. The major source of CH(3)Hg(+) exposure is the consumption of fish and, therefore, its intake is practically unavoidable. The present concern is on the study of the effects of low level exposure to CH(3)Hg(+) on human neurodevelopment, with a view to establishing a safe daily intake. Recommendations are 0.4 micro g/kg body weight/day by the WHO and US FDA and, recently, 0.1 micro g/kg body weight/day by the US EPA. Unfortunately, these levels are easily attained with few meals of fish per week, depending on the source of the fish and its position in the food chain. http://www.ncbi.nlm.nih.gov/pubmed/12835120 “Elemental mercury and its inorganic and organic compounds have different toxic properties, but all them are considered hazardous in human exposure. Recommendations are 0.4 micro g/kg body weight/day by the WHO and US FDA and, recently, 0.1 micro g/kg body weight/day by the US EPA. Unfortunately, these levels are easily attained with few meals of fish per week, depending on the source of the fish and its position in the food chain.” “The evidence presented here shows that the occurrence of neurodevelopmental disorders following thimerosal-containing childhood vaccines does not appear to be coincidental.” Pediatric Rehabilitation • April 2003 An assessment of the impact of thimerosal on childhood neurodevelopmental disorders Author information Geier DA1, Geier MR. The Genetic Centers of America 14 Redgate Court, Silver Spring, MD 20905, USA Abstract The prevalence of autism in the US has risen from 1 in approximately 2500 in the mid-1980s to 1 in approximately 300 children in the mid-1990s. The purpose of this study was to evaluate whether mercury from thimerosal in childhood vaccines contributed to neurodevelopmental disorders. Neurodevelopmental disorder dose-response curves for increasing mercury doses of thimerosal in childhood vaccines were determined based upon examination of the Vaccine Adverse Events Reporting System (VAERS) database and the 2001 US’ Department of Education Report. The instantaneous dosage of mercury children received in comparison to the Food and Drug Administration (FDA)’s maximum permissible dose for the oral ingestion of methylmercury was also determined. The dose-response curves showed increases in odds ratios of neurodevelopmental disorders from both the VAERS and US Department of Education data closely linearly correlated with increasing doses of mercury from thimerosalcontaining childhood vaccines and that for overall odds ratios statistical significance was achieved. Similar slopes and linear regression coefficients for autism odds ratios in VAERS and the US Department of Education data help to mutually validate each other. Controls employed in the VAERS and US Department of Education data showed minimal biases. The evidence presented here shows that the occurrence of neurodevelopmental disorders following thimerosal-containing childhood vaccines does not appear to be coincidental. http://www.ncbi.nlm.nih.gov/pubmed/14534046 “An association between neurodevelopmental disorders and thimerosal-containing DTaP vaccines was found ...” Experiments In Biological Medicine • June 2003 Neurodevelopmental disorders after thimerosal-containing vaccines: a brief communication Author information Geier MR1, Geier DA. The Genetic Centers of America, Silver Spring, Maryland 20905, USA mgeier@erols.com Abstract We were initially highly skeptical that differences in the concentrations of thimerosal in vaccines would have any effect on the incidence rate of neurodevelopmental disorders after childhood immunization. This study presents the first epidemiologic evidence, based upon tens of millions of doses of vaccine administered in the United States, that associates increasing thimerosal from vaccines with neurodevelopmental disorders. Specifically, an analysis of the Vaccine Adverse Events Reporting System (VAERS) database showed statistical increases in the incidence rate of autism (relative risk [RR] = 6.0), mental retardation (RR = 6.1), and speech disorders (RR = 2.2) after thimerosal-containing diphtheria, tetanus, and acellular pertussis (DTaP) vaccines in comparison with thimerosal-free DTaP vaccines. The male/female ratio indicated that autism (17) and speech disorders (2.3) were reported more in males than females after thimerosal-containing DTaP vaccines, whereas mental retardation (1.2) was more evenly reported among male and female vaccine recipients. Controls were employed to determine if biases were present in the data, but none were found. It was determined that overall adverse reactions were reported in similar-aged populations after thimerosal-containing DTaP (2.4 +/- 3.2 years old) and thimerosal-free DTaP (2.1 +/- 2.8 years old) vaccinations. Acute control adverse reactions such as deaths (RR = 1.0), vasculitis (RR = 1.2), seizures (RR = 1.6), ED visits (RR = 1.4), total adverse reactions (RR = 1.4), and gastroenteritis (RR = 1.1) were reported similarly after thimerosal-containing and thimerosal-free DTaP vaccines. An association between neurodevelopmental disorders and thimerosal-containing DTaP vaccines was found, but additional studies should be conducted to confirm and extend this study. http://www.ncbi.nlm.nih.gov/pubmed/12773696 Environmental Toxicology • June 2003 Environmental exposure to mercury and its toxicopathologic implications for public health Author information Tchounwou PB1, Ayensu WK, Ninashvili N, Sutton D. Cellomics and Toxicogenomics Research Laboratory NIH Center for Environmental Health, School of Science and Technology Jackson State University, 1400 Lynch Street, Box 18540 Jackson, Mississippi 39217, USA. paul.b.tchounwou@jsums.edu Abstract Mercury is a toxic and hazardous metal that occurs naturally in the earth’s crust. Natural phenomena such as erosion and volcanic eruptions, and anthropogenic activities like metal smelting and industrial production and use may lead to substantial contamination of the environment with mercury. Through consumption of mercury in food, the populations of many areas, particularly in the developing world, have been confronted with catastrophic outbreaks of mercury-induced diseases and mortality. Countries such as Japan, Iraq, Ghana, the Seychelles, and the Faroe Islands have faced such epidemics, which have unraveled the insidious and debilitating nature of mercury poisoning. Its creeping neurotoxicity is highly devastating, particularly in the central and peripheral nervous systems of children. Central nervous system defects and erethism as well as arrythmias, cardiomyopathies, and kidney damage have been associated with mercury exposure. Necrotizing bronchitis and pneumonitis arising from inhalation of mercury vapor can result in respiratory failure. Mercury is also considered a potent immunostimulant and -suppressant, depending on exposure dose and individual susceptibility, producing a number of pathologic sequelae including lymphoproliferation, hypergammaglobulinemia, and total systemic hyper- and hyporeactivities. In this review we discuss the sources of mercury and the potential for human exposure; its biogeochemical cycling in the environment; its systemic, immunotoxic, genotoxic/carcinogenic, and teratogenic health effects; and the dietary influences on its toxicity; as well as the important considerations in risk assessment and management of mercury poisoning. http://www.ncbi.nlm.nih.gov/pubmed/12740802 “Its creeping neurotoxicity is highly devastating, particularly in the central and peripheral nervous systems of children.” “... the present study provides further insight into one possible mechanism by which early mercury exposures could increase the risk of autism.” International Journal Of Toxicology • July 2003 Reduced levels of mercury in first baby haircuts of autistic children Author information Holmes AS1, Blaxill MF, Haley BE. SafeMinds, Cambridge, Massachusetts, USA Abstract Reported rates of autism have increased sharply in the United States and the United Kingdom. One possible factor underlying these increases is increased exposure to mercury through thimerosal-containing vaccines, but vaccine exposures need to be evaluated in the context of cumulative exposures during gestation and early infancy. Differential rates of postnatal mercury elimination may explain why similar gestational and infant exposures produce variable neurological effects. First baby haircut samples were obtained from 94 children diagnosed with autism using Diagnostic and Statistical Manual of Mental Disorders, 4th edition (DSM IV) criteria and 45 age- and gender-matched controls. Information on diet, dental amalgam fillings, vaccine history, Rho D immunoglobulin administration, and autism symptom severity was collected through a maternal survey questionnaire and clinical observation. Hair mercury levels in the autistic group were 0.47 ppm versus 3.63 ppm in controls, a significant difference. The mothers in the autistic group had significantly higher levels of mercury exposure through Rho D immunoglobulin injections and amalgam fillings than control mothers. Within the autistic group, hair mercury levels varied significantly across mildly, moderately, and severely autistic children, with mean group levels of 0.79, 0.46, and 0.21 ppm, respectively. Hair mercury levels among controls were significantly correlated with the number of the mothers’ amalgam fillings and their fish consumption as well as exposure to mercury through childhood vaccines, correlations that were absent in the autistic group. Hair excretion patterns among autistic infants were significantly reduced relative to control. These data cast doubt on the efficacy of traditional hair analysis as a measure of total mercury exposure in a subset of the population. In light of the biological plausibility of mercury’s role in neurodevelopmental disorders, the present study provides further insight into one possible mechanism by which early mercury exposures could increase the risk of autism. http://www.ncbi.nlm.nih.gov/pubmed/12933322 Toxicological Science • August 2003 Thimerosal induces DNA breaks, caspase-3 activation, membrane damage, and cell death in cultured human neurons and fibroblasts Author information Baskin DS1, Ngo H, Didenko VV. Department of Neurosurgery Baylor College of Medicine 6560 Fannin Suite 944 Houston, Texas 77030, USA dbaskin@tmh.tmc.edu Abstract Thimerosal is an organic mercurial compound used as a preservative in biomedical preparations. Little is known about the reactions of human neuronal and skin cells to its micro- and nanomolar concentrations, which can occur after using thimerosal-containing products. A useful combination of fluorescent techniques for the assessment of thimerosal toxicity is introduced. Short-term thimerosal toxicity was investigated in cultured human cerebral cortical neurons and in normal human fibroblasts. Cells were incubated with 125-nM to 250-microM concentrations of thimerosal for 45 min to 24 h. A 4’, 6-diamidino-2-phenylindole dihydrochloride (DAPI) dye exclusion test was used to identify nonviable cells and terminal transferase-based nick-end labeling (TUNEL) to label DNA damage. Detection of active caspase-3 was performed in live cell cultures using a cell-permeable fluorescent caspase inhibitor. The morphology of fluorescently labeled nuclei was analyzed. After 6 h of incubation, the thimerosal toxicity was observed at 2 microM based on the manual detection of the fluorescent attached cells and at a 1-microM level with the more sensitive GENios Plus Multi-Detection Microplate Reader with Enhanced Fluorescence. The lower limit did not change after 24 h of incubation. Cortical neurons demonstrated higher sensitivity to thimerosal compared to fibroblasts. The first sign of toxicity was an increase in membrane permeability to DAPI after 2 h of incubation with 250 microM thimerosal. A 6-h incubation resulted in failure to exclude DAPI, generation of DNA breaks, caspase-3 activation, and development of morphological signs of apoptosis. We demonstrate that thimerosal in micromolar concentrations rapidly induce membrane and DNA damage and initiate caspase-3-dependent apoptosis in human neurons and fibroblasts. We conclude that a proposed combination of fluorescent techniques can be useful in analyzing the toxicity of thimerosal. http://www.ncbi.nlm.nih.gov/pubmed/12773768 “We demonstrate that thimerosal in micromolar concentrations rapidly induce membrane and DNA damage and initiate caspase-3-dependent apoptosis in human neurons and fibroblasts.” “This study provides strong epidemiological evidence for a link between increasing mercury from thimerosal-containing childhood vaccines and neurodevelopment disorders and heart disease.” Journal of American Physicians and Surgeons • Volume 8, Number 1 • Spring 2003 Thimerosal in Childhood Vaccines, Neurodevelopment Disorders, and Heart Disease in the United States Mark R. Geier, M.D., Ph.D. David A. Geier Abstract In this study, we evaluated doses of mercury from thimerosal-containing childhood immunizations in compari- son to US Federal Safety Guidelines and the effects of increasing doses of mercury on the incidence of neurodevelopment disorders and heart disease. This study showed that children received mercury from this source in excess of the Federal Safety Guidelines for the oral ingestion of methylmercury. Our analyses showed increasing relative risks for neurodevelopment disorders and heart disease with increasing doses of mercury. This study provides strong epidemiological evidence for a link between mercury exposure from thimerosal-containing childhood vaccines and neurodevelopment disorders. Conclusion This study provides strong epidemiological evidence for a link between increasing mercury from thimerosal-containing childhood vaccines and neurodevelopment disorders and heart disease. In light of voluminous literature supporting the biologic mechanisms for mercuryinduced adverse reactions, the presence of amounts of mercury in thimerosal-containing childhood vaccines exceeding Federal Safety Guidelines for the oral ingestion of mercury, and previous epidemiological studies showing adverse reactions from such vaccines, a causal relationship between thimerosal- containing childhood vaccines and neurodevelopment disorders and heart disease appears to be confirmed. It is to be hoped that complete removal of thimerosal from all childhood vaccines will help to stem the tragic, apparently iatrogenic epidemic of autism and speech disorders that the United States is now facing. Full Report http://www.jpands.org/vol8no1/geier.pdf Toxicology And Applied Pharmacology • October 2003 Brain barrier systems: a new frontier in metal neurotoxicological research Author information Zheng W1, Aschner M, Ghersi-Egea JF. School of Health Sciences Purdue University West Lafayette, IN 47907, USA wz18@purdue.edu Abstract The concept of brain barriers or a brain barrier system embraces the blood-brain interface, referred to as the blood-brain barrier, and the blood-cerebrospinal fluid (CSF) interface, referred to as the blood-CSF barrier. These brain barriers protect the CNS against chemical insults, by different complementary mechanisms. Toxic metal molecules can either bypass these mechanisms or be sequestered in and therefore potentially deleterious to brain barriers. Supportive evidence suggests that damage to blood-brain interfaces can lead to chemical-induced neurotoxicities. This review article examines the unique structure, specialization, and function of the brain barrier system, with particular emphasis on its toxicological implications. Typical examples of metal transport and toxicity at the barriers, such as lead (Pb), mercury (Hg), iron (Fe), and manganese (Mn), are discussed in detail with a special focus on the relevance to their toxic neurological consequences. Based on these discussions, the emerging research needs, such as construction of the new concept of blood-brain regional barriers, understanding of chemical effect on aged or immature barriers, and elucidation of the susceptibility of tight junctions to toxicants, are identified and addressed in this newly evolving field of neurotoxicology. They represent both clear challenges and fruitful research domains not only in neurotoxicology, but also in neurophysiology and pharmacology. http://www.ncbi.nlm.nih.gov/pubmed/14554098 “This review article examines the unique structure, specialization, and function of the brain barrier system, with particular emphasis on its toxicological implications. Typical examples of metal transport and toxicity at the barriers, such as ... mercury ... are discussed in detail with a special focus on the relevance to their toxic neurological consequences.” Toxicology And Applied Pharmacology • January 2004 Dose-response study of thimerosal-induced murine systemic autoimmunity Author information Havarinasab S1, Lambertsson L, Qvarnström J, Hultman P. Molecular and Immunological Pathology (AIR) Department of Molecular and Clinical Medicine Linköping University, SE-581 85 Linköping, Sweden Abstract The organic compound ethylmercurithiosalicylate (thimerosal), which is primarily present in the tissues as ethylmercury, has caused illness and several deaths due to erroneous handling when used as a disinfectant or as a preservative in medical preparations. Lately, possible health effects of thimerosal in childhood vaccines have been much discussed. Thimerosal is a well-known sensitizing agent, although usually of no clinical relevance. In rare cases, thimerosal has caused systemic immune reactions including acrodynia. We have studied if thimerosal might induce the systemic autoimmune condition observed in genetically susceptible mice after exposure to inorganic mercury. A.SW mice were exposed to 1.25-40 mg thimerosal/l drinking water for 70 days. Antinucleolar antibodies, targeting the 34-kDa protein fibrillarin, developed in a dose-related pattern and first appeared after 10 days in the two highest dose groups. The lowest observed adverse effect level (LOAEL) for antifibrillarin antibodies was 2.5 mg thimerosal/l, corresponding to an absorbed dose of 147 microg Hg/kg bw and a concentration of 21 and 1.9 microg Hg/g in the kidney and lymph nodes, respectively. The same LOAEL was found for tissue immune-complex deposits. The total serum concentration of IgE, IgG1, and IgG2a showed a significant dose-related increase in thimerosal-treated mice, with a LOAEL of 5 mg thimerosal/l for IgG1 and IgE, and 20 mg thimerosal/ l for IgG2a. The polyclonal B-cell activation showed a significant dose-response relationship with a LOAEL of 10 mg thimerosal/l. Therefore, thimerosal induces in genetically susceptible mice a systemic autoimmune syndrome very similar to that seen after treatment with inorganic mercury, although a higher absorbed dose of Hg is needed using thimerosal. The autoimmune syndrome induced by thimerosal is different from the weaker and more restricted autoimmune reaction observed after treatment with an equipotent dose of methylmercury. http://www.ncbi.nlm.nih.gov/pubmed/14736497 “... thimerosal induces in genetically susceptible mice a systemic autoimmune syndrome ...” Toxicology • January 2004 Effect of thimerosal, a preservative in vaccines, on intracellular Ca2+ concentration of rat cerebellar neurons Author information Ueha-Ishibashi T1, Oyama Y, Nakao H, Umebayashi C, Nishizaki Y, Tatsuishi T, Iwase K, Murao K, Seo H. Laboratory of Cellular Signaling Faculty of Integrated Arts and Sciences The University of Tokushima Tokushima 770-8502, Japan Abstract The effect of thimerosal, an organomercurial preservative in vaccines, on cerebellar neurons dissociated from 2-week-old rats was compared with those of methylmercury using a flow cytometer with appropriate fluorescent dyes. Thimerosal and methylmercury at concentrations ranging from 0.3 to 10 microM increased the intracellular concentration of Ca2+ ([Ca2+]i) in a concentration-dependent manner. The potency of 10 microM thimerosal to increase the [Ca2+]i was less than that of 10 microM methylmercury. Their effects on the [Ca2+]i were greatly attenuated, but not completely suppressed, under external Ca(2+)-free condition, suggesting a possibility that both agents increase membrane Ca2+ permeability and release Ca2+ from intracellular calcium stores. The effect of 10 microM thimerosal was not affected by simultaneous application of 30 microM L-cysteine whereas that of 10 microM methylmercury was significantly suppressed. The potency of thimerosal was similar to that of methylmercury in the presence of L-cysteine. Both agents at 1 microM or more similarly decreased the cellular content of glutathione in a concentration-dependent manner, suggesting an increase in oxidative stress. Results indicate that thimerosal exerts some cytotoxic actions on cerebellar granule neurons dissociated from 2-week-old rats and its potency is almost similar to that of methylmercury. http://www.ncbi.nlm.nih.gov/pubmed/14698570 “Results indicate that thimerosal exerts some cytotoxic actions on cerebellar granule neurons ... its potency is almost similar to that of methylmercury.” Medical Science Monitor • March 2004 A comparative evaluation of the effects of MMR immunization and mercury doses from thimerosal-containing childhood vaccines on the population prevalence of autism Author information Geier DA1, Geier MR. President, MedCon, Inc, Silver Spring, MD, USA Abstract BACKGROUND The purpose of the study was to evaluate the effects of MMR immunization and mercury from thimerosal-containing childhood vaccines on the prevalence of autism. MATERIAL/METHODS Evaluations of the Biological Surveillance Summaries of the Centers for Disease Control and Prevention (CDC), the U.S. Department of Education datasets, and the CDC’s yearly live birth estimates were undertaken. RESULTS It was determined that there was a close correlation between mercury doses from thimerosal--containing childhood vaccines and the prevalence of autism from the late 1980s through the mid-1990s. In contrast, there was a potential correlation between the number of primary pediatric measles-containing vaccines administered and the prevalence of autism during the 1980s. In addition, it was found that there were statistically significant odds ratios for the development of autism following increasing doses of mercury from thimerosal-containing vaccines (birth cohorts: 1985 and 1990-1995) in comparison to a baseline measurement (birth cohort: 1984). The contribution of thimerosal from childhood vaccines (>50% effect) was greater than MMR vaccine on the prevalence of autism observed in this study. CONCLUSIONS The results of this study agree with a number of previously published studies. These studies have shown that there is biological plausibility and epidemiological evidence showing a direct relationship between increasing doses of mercury from thimerosal-containing vaccines and neurodevelopmental disorders, and measles-containing vaccines and serious neurological disorders. It is recommended that thimerosal be removed from all vaccines, and additional research be undertaken to produce a MMR vaccine with an improved safety profile. http://www.ncbi.nlm.nih.gov/pubmed/14976450 “The results of this study agree with a number of previously published studies. These studies have shown that there is biological plausibility and epidemiological evidence showing a direct relationship between increasing doses of mercury from thimerosal-containing vaccines and neurodevelopmental disorders, and measles-containing vaccines and serious neurological disorders.” Medical Hypotheses • March 2004 Thimerosal and autism? A plausible hypothesis that should not be dismissed Author information Blaxill MF1, Redwood L, Bernard S. Safe Minds (Sensible Action For Ending Mercury-Induced Neurological Disorders) 14 Commerce Drive, PH Cranford, New Jersey 07016, USA blaxill@comcast.net Abstract The autism-mercury hypothesis first described by Bernard et al. has generated much interest and controversy. The Institute of Medicine (IOM) reviewed the connection between mercury-containing vaccines and neurodevelopmental disorders, including autism. They concluded that the hypothesis was biologically plausible but that there was insufficient evidence to accept or reject a causal connection and recommended a comprehensive research program. Without citing new experimental evidence, a number of observers have offered opinions on the subject, some of which reject the IOM’s conclusions. In a recent review, Nelson and Bauman argue that a link between the preservative thimerosal, the source of the mercury in childhood vaccines, is improbable. In their defense of thimerosal, these authors take a narrow view of the original hypothesis, provide no new evidence, and rely on selective citations and flawed reasoning. We provide evidence here to refute the Nelson and Bauman critique and to defend the autismmercury hypothesis. http://www.ncbi.nlm.nih.gov/pubmed/?term=15082108 “We provide evidence here to refute the Nelson and Bauman critique and to defend the autism-mercury hypothesis.” Molecular Psychiatry • April 2004 Activation of methionine synthase by insulin-like growth factor-1 and dopamine: a target for neurodevelopmental toxins and thimerosal Author information Waly M1, Olteanu H, Banerjee R, Choi SW, Mason JB, Parker BS, Sukumar S, Shim S, Sharma A, Benzecry JM, Power-Charnitsky VA, Deth RC. Department of Pharmaceutical Sciences Northeastern University, Boston, MA 02115, USA Abstract Methylation events play a critical role in the ability of growth factors to promote normal development. Neurodevelopmental toxins, such as ethanol and heavy metals, interrupt growth factor signaling, raising the possibility that they might exert adverse effects on methylation. We found that insulin-like growth factor-1 (IGF-1)and dopamine-stimulated methionine synthase (MS) activity and folate-dependent methylation of phospholipids in SH-SY5Y human neuroblastoma cells, via a PI3kinase- and MAP-kinase-dependent mechanism. The stimulation of this pathway increased DNA methylation, while its inhibition increased methylation-sensitive gene expression. Ethanol potently interfered with IGF-1 activation of MS and blocked its effect on DNA methylation, whereas it did not inhibit the effects of dopamine. Metal ions potently affected IGF-1 and dopamine-stimulated MS activity, as well as folate-dependent phospholipid methylation: Cu(2+) promoted enzyme activity and methylation, while Cu(+), Pb(2+), Hg(2+) and Al(3+) were inhibitory. The ethylmercury-containing preservative thimerosal inhibited both IGF-1- and dopaminestimulated methylation with an IC(50) of 1 nM and eliminated MS activity. Our findings outline a novel growth factor signaling pathway that regulates MS activity and thereby modulates methylation reactions, including DNA methylation. The potent inhibition of this pathway by ethanol, lead, mercury, aluminum and thimerosal suggests that it may be an important target of neurodevelopmental toxins. http://www.ncbi.nlm.nih.gov/pubmed/14745455 “The potent inhibition of this pathway by ethanol, lead, mercury, aluminum and thimerosal suggests that it may be an important target of neurodevelopmental toxins.” International Journal Of Hygiene And Environmental Health • September 2004 Amalgam studies: disregarding basic principles of mercury toxicity Author information Mutter J1, Naumann J, Sadaghiani C, Walach H, Drasch G. Institute for Environmental Medicine and Hospital Epidemiology University Hospital, Freiburg, Germany jmutter@iuk3.ukl.uni-freiburg.de Abstract Dental amalgam, which has been used for over 150 years in dental practice, consists of about 50% metallic mercury. Studies on animal and humans show that mercury is continuously released from dental amalgam and absorbed by several body tissues. It is widely accepted that the main source of mercury vapor is dental amalgam and it contributes substantially to mercury load in human body tissues. There is still a controversy about the consequences of this additional mercury exposure from amalgam to human health. Many studies were performed to evaluate possible adverse effects. In this comment, these studies were analyzed with regard to their methodical quality by considering the newest findings on mercury toxicity and metabolism. In sum, a number of studies are methodically flawed drawing inaccurate conclusions as to the safety of dental amalgam. http://www.ncbi.nlm.nih.gov/pubmed/?term=15471104 “Studies on animal and humans show that mercury is continuously released from dental amalgam and absorbed by several body tissues. It is widely accepted that the main source of mercury vapor is dental amalgam and it contributes substantially to mercury load in human body tissues. In sum, a number of studies are methodically flawed drawing inaccurate conclusions as to the safety of dental amalgam.” Molecular Psychiatry • September 2004 Neurotoxic effects of postnatal thimerosal are mouse strain dependent Author information Hornig M1, Chian D, Lipkin WI. Jerome L and Dawn Greene Infectious Disease Laboratory Department of Epidemiology, Mailman School of Public Health Columbia University, New York, NY 10032, USA mady.hornig@columbia.edu Abstract The developing brain is uniquely susceptible to the neurotoxic hazard posed by mercurials. Host differences in maturation, metabolism, nutrition, sex, and autoimmunity influence outcomes. How population-based variability affects the safety of the ethylmercury-containing vaccine preservative, thimerosal, is unknown. Reported increases in the prevalence of autism, a highly heritable neuropsychiatric condition, are intensifying public focus on environmental exposures such as thimerosal. Immune profiles and family history in autism are frequently consistent with autoimmunity. We hypothesized that autoimmune propensity influences outcomes in mice following thimerosal challenges that mimic routine childhood immunizations. Autoimmune disease-sensitive SJL/J mice showed growth delay; reduced locomotion; exaggerated response to novelty; and densely packed, hyperchromic hippocampal neurons with altered glutamate receptors and transporters. Strains resistant to autoimmunity, C57BL/6J and BALB/cJ, were not susceptible. These findings implicate genetic influences and provide a model for investigating thimerosal-related neurotoxicity. http://www.ncbi.nlm.nih.gov/pubmed/?term=15184908 “These findings implicate genetic influences and provide a model for investigating thimerosal-related neurotoxicity.” Toxicology In Vitro • October 2004 Property of thimerosal-induced decrease in cellular content of glutathione in rat thymocytes: a flow cytometric study with 5-chloromethylfluorescein diacetate Author information Ueha-Ishibashi T1, Tatsuishi T, Iwase K, Nakao H, Umebayashi C, Nishizaki Y, Nishimura Y, Oyama Y, Hirama S, Okano Y. Laboratory of Cellular Signaling, Faculty of Integrated Arts and Sciences The University of Tokushima, Minami-Jyosanjima 1-1 Tokushima 770-8502, Japan Abstract There is a concern on the part of public health community that adverse health consequences by thimerosal, a preservative in vaccines for infants, may occur among infants during immunization schedule. Therefore, the effect of thimerosal on cellular content of glutathione was examined on thymocytes obtained from 4-week-old rats using a flow cytometer and 5-chloromethylfluorescein diacetate. Thimerosal at concentrations ranging from 1 to 10 microM reduced the cellular content of glutathione in a concentration-dependent manner, and the complete depletion of cellular glutathione was observed when the cells were treated with 30 microM thimerosal. L-Cysteine significantly attenuated the actions of thimerosal to reduce the glutathione content and to increase the intracellular Ca2+ concentration. Prolonged incubation (24 h) with 1-3 microM thimerosal induced the apoptosis. The cytotoxic action of thimerosal was greatly augmented when the cells suffered oxidative stress induced by H2O2. It may be unlikely that thimerosal exerts potent cytotoxic action under the in vivo condition because the blood concentration of thimerosal after receiving vaccines does not seem to reach micromolar range and nonprotein thiols at micromolar concentrations are present in the blood. http://www.ncbi.nlm.nih.gov/pubmed/?term=15251173 “Thimerosal at concentrations ranging from 1 to 10 microM reduced the cellular content of glutathione in a concentration-dependent manner, and the complete depletion of cellular glutathione was observed when the cells were treated with 30 microM thimerosal.” “The present study provides additional epidemiological evidence supporting previous epidemiological, clinical and experimental evidence that administration of thimerosal-containing vaccines in the United States resulted in a significant number of children developing Neurological Disorders.” International Journal Of Toxicology • November 2004 Neurodevelopmental disorders following thimerosal-containing childhood immunizations: a follow-up analysis Author information Geier D1, Geier MR. MedCon, Inc., Maryland, USA Abstract The authors previously published the first epidemiological study from the United States associating thimerosal from childhood vaccines with neurodevelopmental disorders (NDs) based upon assessment of the Vaccine Adverse Event Reporting System (VAERS). A number of years have gone by since their previous analysis of the VAERS. The present study was undertaken to determine whether the previously observed effect between thimerosal-containing childhood vaccines and NDs are still apparent in the VAERS as children have had a chance to further mature and potentially be diagnosed with additional NDs. In the present study, a cohort of children receiving thimerosal-containing diphtheria-tetanus-acellular pertussis (DTaP) vaccines in comparison to a cohort of children receiving thimerosal-free DTaP vaccines administered from 1997 through 2000 based upon an assessment of adverse events reported to the VAERS were evaluated. It was determined that there were significantly increased odds ratios (ORs) for autism (OR = 1.8, p < .05), mental retardation (OR = 2.6, p < .002), speech disorder (OR = 2.1, p < .02), personality disorders (OR = 2.6, p < .01), and thinking abnormality (OR = 8.2, p < .01) adverse events reported to the VAERS following thimerosal-containing DTaP vaccines in comparison to thimerosal-free DTaP vaccines. Potential confounders and reporting biases were found to be minimal in this assessment of the VAERS. It was observed, even though the media has reported a potential association between autism and thimerosal exposure, that the other NDs analyzed in this assessment of the VAERS had significantly higher ORs than autism following thimerosal-containing DTaP vaccines in comparison to thimerosal-free DTaP vaccines. The present study provides additional epidemiological evidence supporting previous epidemiological, clinical and experimental evidence that administration of thimerosal-containing vaccines in the United States resulted in a significant number of children developing NDs. http://www.ncbi.nlm.nih.gov/pubmed/15764492 Washington, D.C. • 2004 Vaccines And Autism Immunization Safety Review Committee Board on Health Promotion and Disease Prevention Institute Of Medicine Of The National Academies The National Academies Press http://www.nap.edu/read/10997/chapter/1 “It has been estimated that about 15% of the population may show enhanced susceptibility to mercury exposure.” “We provide evidence here to refute the Nelson and Bauman critique and to defend the autism-mercury hypothesis.” Medical Hypotheses • 2004 Thimerosal and autism? A plausible hypothesis that should not be dismissed Author information Blaxill MF1, Redwood L, Bernard S. Sensible Action For Ending Mercury-Induced Neurological Disorders SAFE MINDS 14 Commerce Drive, PH Cranford, New Jersey 07016, USA blaxill@comcast.net Abstract The autism-mercury hypothesis first described by Bernard et al. has generated much interest and controversy. The Institute of Medicine (IOM) reviewed the connection between mercury-containing vaccines and neurodevelopmental disorders, including autism. They concluded that the hypothesis was biologically plausible but that there was insufficient evidence to accept or reject a causal connection and recommended a comprehensive research program. Without citing new experimental evidence, a number of observers have offered opinions on the subject, some of which reject the IOM’s conclusions. In a recent review, Nelson and Bauman argue that a link between the preservative thimerosal, the source of the mercury in childhood vaccines, is improbable. In their defense of thimerosal, these authors take a narrow view of the original hypothesis, provide no new evidence, and rely on selective citations and flawed reasoning. We provide evidence here to refute the Nelson and Bauman critique and to defend the autism-mercury hypothesis. http://www.ncbi.nlm.nih.gov/pubmed/15082108 Neurotoxicology • January 2005 Thimerosal neurotoxicity is associated with glutathione depletion: protection with glutathione precursors Author information James SJ1, Slikker W 3rd, Melnyk S, New E, Pogribna M, Jernigan S. Department of Pediatrics University of Arkansas for Medical Sciences and Arkansas Children’s Hospital Research Institute Little Rock, AR 72202 USA jamesjill@uams.edu Abstract Thimerosol is an antiseptic containing 49.5% ethyl mercury that has been used for years as a preservative in many infant vaccines and in flu vaccines. Environmental methyl mercury has been shown to be highly neurotoxic, especially to the developing brain. Because mercury has a high affinity for thiol (sulfhydryl (-SH)) groups, the thiol-containing antioxidant, glutathione (GSH), provides the major intracellular defense against mercury-induced neurotoxicity. Cultured neuroblastoma cells were found to have lower levels of GSH and increased sensitivity to thimerosol toxicity compared to glioblastoma cells that have higher basal levels of intracellular GSH. Thimerosal-induced cytotoxicity was associated with depletion of intracellular GSH in both cell lines. Pretreatment with 100 microM glutathione ethyl ester or N-acetylcysteine (NAC), but not methionine, resulted in a significant increase in intracellular GSH in both cell types. Further, pretreatment of the cells with glutathione ethyl ester or NAC prevented cytotoxicity with exposure to 15 microM Thimerosal. Although Thimerosal has been recently removed from most children’s vaccines, it is still present in flu vaccines given to pregnant women, the elderly, and to children in developing countries. The potential protective effect of GSH or NAC against mercury toxicity warrants further research as possible adjunct therapy to individuals still receiving Thimerosal-containing vaccinations. http://www.ncbi.nlm.nih.gov/pubmed/15527868 “Although Thimerosal has been recently removed from most children’s vaccines, it is still present in flu vaccines given to pregnant women, the elderly, and to children in developing countries.” Archives Of Environmental Occupational Health • January 2005 Genetic influences on the retention of inorganic mercury Author information Custodio HM1, Harari R, Gerhardsson L, Skerfving S, Broberg K. Department of Occupational and Environmental Medicine Lund University Hospital, Lund, Sweden Abstract Mercury is eliminated as glutathione (GSH) conjugates. GSH production is mediated by glutamyl-cysteine ligase (GCL), and conjugation by glutathione S-transferases (GST). This study tested if polymorphisms in GCL and GST genes modify mercury retention in humans exposed to elemental mercury vapor. Total mercury concentrations in whole blood, plasma and urine, and genotypes for GCLC, GCLM, GSTA1, GSTM1, GSTP1, and GSTT1 were determined in 309 gold miners, gold buyers and controls. The presence of the GCLM-588T allele was associated with increased blood, plasma and urine mercury levels. These results indicate that genotypes with decreased GSH availability for mercury conjugation affect the metabolism of inorganic mercury. http://www.ncbi.nlm.nih.gov/pubmed/?term=16961004 “These results indicate that genotypes with decreased glutathione availability for mercury conjugation affect the metabolism of inorganic mercury.” Medical Science Monitor • April 2005 A two-phased population epidemiological study of the safety of thimerosal-containing vaccines: a follow-up analysis Author information Geier DA1, Geier MR. MedCon, Inc., USA Abstract BACKGROUND Thimerosal is an ethylmercury-containing preservative in vaccines. Toxicokinetic studies have shown children received doses of mercury from thimerosal-containing vaccines (TCVs) that were in excess of safety guidelines. Previously, an ecological study showing a significant association between TCVs and neurodevelopmental disorders (NDs) in the US was published in this journal. MATERIAL/METHODS A two phased population-based epidemiological study was undertaken. Phase one evaluated reported NDs to the Vaccine Adverse Event Reporting System (VAERS) following thimerosal-containing Diphtheria-Tetanus-acellular-Pertussis (DTaP) vaccines in comparison to thimerosal-free DTaP vaccines administered from 1997 through 2001. Phase two evaluated the automated Vaccine Safety Datalink (VSD) for cumulative exposures to mercury from TCVs at 1-, 2-, 3-, and 6-months-ofage for infants born from 1992 through 1997 and the eventual risk of developing NDs. RESULTS Phase one showed significantly increased risks for autism, speech disorders, mental retardation, personality disorders, and thinking abnormalities reported to VAERS following thimerosal-containing DTaP vaccines in comparison to thimerosal-free DTaP vaccines. Phase two showed significant associations between cumulative exposures to thimerosal and the following types of NDs: unspecified developmental delay, tics, attention deficit disorder (ADD), language delay, speech delay, and neurodevelopmental delays in general. CONCLUSIONS This study showed that exposure to mercury from TCVs administered in the US was a consistent significant risk factor for the development of NDs. It is clear from these data and other recent publications linking TCVs with NDs that additional ND research should be undertaken in the context of evaluating mercury-associated exposures and thimerosal-free vaccines should be made available. http://www.ncbi.nlm.nih.gov/pubmed/?term=15795695 “This study showed that exposure to mercury from Thimerosal containing vaccines administered in the US was a consistent significant risk factor for the development of NDs.” Neurotoxicology • June 2005 Mitochondrial mediated thimerosal-induced apoptosis in a human neuroblastoma cell line (SK-N-SH) Author information Humphrey ML1, Cole MP, Pendergrass JC, Kiningham KK. Department of Pharmacology Joan C. Edwards School of Medicine Marshall University Huntington, WV 25704-9388, USA Abstract Environmental exposure to mercurials continues to be a public health issue due to their deleterious effects on immune, renal and neurological function. Recently the safety of thimerosal, an ethyl mercury-containing preservative used in vaccines, has been questioned due to exposure of infants during immunization. Mercurials have been reported to cause apoptosis in cultured neurons; however, the signaling pathways resulting in cell death have not been well characterized. Therefore, the objective of this study was to identify the mode of cell death in an in vitro model of thimerosal-induced neurotoxicity, and more specifically, to elucidate signaling pathways which might serve as pharmacological targets. Within 2 h of thimerosal exposure (5 microM) to the human neuroblastoma cell line, SK-N-SH, morphological changes, including membrane alterations and cell shrinkage, were observed. Cell viability, assessed by measurement of lactate dehydrogenase (LDH) activity in the medium, as well as the 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide (MTT) assay, showed a time- and concentration-dependent decrease in cell survival upon thimerosal exposure. In cells treated for 24 h with thimerosal, fluorescence microscopy indicated cells undergoing both apoptosis and oncosis/necrosis. To identify the apoptotic pathway associated with thimerosal-mediated cell death, we first evaluated the mitochondrial cascade, as both inorganic and organic mercurials have been reported to accumulate in the organelle. Cytochrome c was shown to leak from the mitochondria, followed by caspase 9 cleavage within 8 h of treatment. In addition, poly(ADP-ribose) polymerase (PARP) was cleaved to form a 85 kDa fragment following maximal caspase 3 activation at 24 h. Taken together these findings suggest deleterious effects on the cytoarchitecture by thimerosal and initiation of mitochondrial-mediated apoptosis. http://www.ncbi.nlm.nih.gov/pubmed/15869795 “Taken together these findings suggest deleterious effects on the cytoarchitecture by thimerosal and initiation of mitochondrial-mediated apoptosis.” Toxicology Science • July 2005 Effects of thimerosal on NGF signal transduction and cell death in neuroblastoma cells Author information Parran DK1, Barker A, Ehrich M. Virginia-Maryland Regional College of Veterinary Medicine Laboratory for Neurotoxicity Studies, Virginia Tech 1 Duckpond Drive, Blacksburg, Virginia 24061-0442, USA Abstract Signaling through neurotrophic receptors is necessary for differentiation and survival of the developing nervous system. The present study examined the effects of the organic mercury compound thimerosal on nerve growth factor signal transduction and cell death in a human neuroblastoma cell line (SH-SY5Y cells). Following exposure to 100 ng/ml NGF and increasing concentrations of thimerosal (1 nM-10 microM), we measured the activation of TrkA, MAPK, and PKC-delta. In controls, the activation of TrkA MAPK and PKC-delta peaked after 5 min of exposure to NGF and then decreased but was still detectable at 60 min. Concurrent exposure to increasing concentrations of thimerosal and NGF for 5 min resulted in a concentration-dependent decrease in TrkA and MAPK phosphorylation, which was evident at 50 nM for TrkA and 100 nM for MAPK. Cell viability was assessed by the LDH assay. Following 24-h exposure to increasing concentrations of thimerosal, the EC50 for cell death in the presence or absence of NGF was 596 nM and 38.7 nM, respectively. Following 48-h exposure to increasing concentrations of thimerosal, the EC50 for cell death in the presence and absence of NGF was 105 nM and 4.35 nM, respectively. This suggests that NGF provides protection against thimerosal cytotoxicity. To determine if apoptotic versus necrotic cell death was occurring, oligonucleosomal fragmented DNA was quantified by ELISA. Control levels of fragmented DNA were similar in both the presence and absence of NGF. With and without NGF, thimerosal caused elevated levels of fragmented DNA appearing at 0.01 microM (apoptosis) to decrease at concentrations >1 microM (necrosis). These data demonstrate that thimerosal could alter NGF-induced signaling in neurotrophin-treated cells at concentrations lower than those responsible for cell death. Full Report http://toxsci.oxfordjournals.org/content/86/1/132.long “These data demonstrate that thimerosal could alter NGF-induced signaling in neurotrophin-treated cells at concentrations lower than those responsible for cell death.” Toxicology And Applied Pharmacology • August 2005 The association between genetic polymorphisms of coproporphyrinogen oxidase and an atypical porphyrinogenic response to mercury exposure in humans Author information Woods JS1, Echeverria D, Heyer NJ, Simmonds PL, Wilkerson J, Farin FM. Department of Environmental and Occupational Health Sciences University of Washington, Seattle, WA 98101, USA Battelle Centers for Public Health Research and Evaluation Seattle, WA 98105, USA jwoods@u.washington.edu Abstract Previous studies have demonstrated highly specific urinary porphyrin profile (UPP) changes in response to mercury (Hg) exposure in animals and human subjects and have defined the biochemical etiology of this effect as selective alteration of the heme pathway enzymes, uroporphyrinogen decarboxylase (UROD), and coproporphyrinogen oxidase (CPOX) by Hg in the kidney. Ongoing validation studies in a population of dental practitioners with low-level occupational Hg exposure have demonstrated the predicted UPP change among approximately 85% of subjects. This study focused on the genetic etiology of an atypical porphyrinogenic response (APR) seen among the remaining 15% of Hg-exposed subjects, characterized by excess excretion of 4- and 5-carboxyl porphyrins and also of the atypical ketoisocoproporphyrin (KICP). Automated DNA-sequencing-based assays were developed to examine the 7 exons and flanking intron-exon boundaries of the CPOX gene. Among several polymorphisms identified, an A814C variant in exon 4 encoding a N272H substitution was found to be predominant among subjects with the APR. Studies suggest that this variant CPOX preferentially converts the upstream 5-carboxylporphyrin (5-CP) to KICP. By partially inhibiting the 5- to 4-decarboxylation step of UROD, Hg promotes 5-CP accumulation, accounting for excess KICP excretion and the APR in Hg-exposed subjects carrying the variant CPOX gene. This finding represents the first report of a polymorphism in a human gene that modifies the effect of Hg on a biological process. The APR might serve as a biomarker of both Hg exposure and susceptibility to Hg toxicity. http://www.ncbi.nlm.nih.gov/pubmed/?term=15967199 “This finding represents the first report of a polymorphism in a human gene that modifies the effect of ethyl mercury on a biological process. The atypical porphyrinogenic response might serve as a biomarker of both mercury exposure and susceptibility to mercury toxicity.” “The results indicate that methyl mercury is not a suitable reference for risk assessment from exposure to thimerosal-derived ethyl mercury.” Environmental Health Perspectives • August 2005 Comparison of blood and brain mercury levels in infant monkeys exposed to methylmercury or vaccines containing thimerosal Author information Burbacher TM1, Shen DD, Liberato N, Grant KS, Cernichiari E, Clarkson T. Department of Environmental and Occupational Health Sciences, School of Public Health and Community Medicine University of Washington, Seattle, Washington 98195, USA tmb@u.washington.edu Thimerosal is a preservative that has been used in manufacturing vaccines since the 1930s. Reports have indicated that infants can receive ethylmercury (in the form of thimerosal) at or above the U.S. Environmental Protection Agency guidelines for methylmercury exposure, depending on the exact vaccinations, schedule, and size of the infant. In this study we compared the systemic disposition and brain distribution of total and inorganic mercury in infant monkeys after thimerosal exposure with those exposed to MeHg. Monkeys were exposed to MeHg (via oral gavage) or vaccines containing thimerosal (via intramuscular injection) at birth and 1, 2, and 3 weeks of age. Total blood Hg levels were determined 2, 4, and 7 days after each exposure. Total and inorganic brain Hg levels were assessed 2, 4, 7, or 28 days after the last exposure. The initial and terminal half-life of Hg in blood after thimerosal exposure was 2.1 and 8.6 days, respectively, which are significantly shorter than the elimination half-life of Hg after MeHg exposure at 21.5 days. Brain concentrations of total Hg were significantly lower by approximately 3-fold for the thimerosal-exposed monkeys when compared with the MeHg infants, whereas the average brainto-blood concentration ratio was slightly higher for the thimerosal-exposed monkeys (3.5 +/- 0.5 vs. 2.5 +/- 0.3). A higher percentage of the total Hg in the brain was in the form of inorganic Hg for the thimerosal-exposed monkeys (34% vs. 7%). The results indicate that MeHg is not a suitable reference for risk assessment from exposure to thimerosal-derived Hg. Knowledge of the toxicokinetics and developmental toxicity of thimerosal is needed to afford a meaningful assessment of the developmental effects of thimerosal-containing vaccines. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1280342/ Editors note: most current risk assessments of biological thimerosal (ethyl mercury) use are based on the false assumption that ethyl mercury and methyl mercury behave similarly in vivo and in vitro Environmental Toxicology And Pharmacology • September 2005 Low dose mercury toxicity and human health Author information Zahir F1, Rizwi SJ, Haq SK, Khan RH. Interdisciplinary Brain Research Centre JN Medical College, AMU, Aligarh, U.P., India Abstract Post Minamata incident there has been awareness about mercury toxicity even among the general public. Previous researches contributed a vast amount of data regarding acute mercury exposure, but gradually information about the low dose [Ninomiya, T., Ohmori, H., Hashimoto, K., Tsuruta, K., Ekino, S., 1995. Expansion of methylmercury poisoning outside minamata: an epidemiological study on chronic methylmercury poisoninig outside of Minamata. Environ. Res. 70 (1) 47-50; Lebel, J., Mergler, D., Lucotte, M., Amorim, M., Dolbec, J., Miranda, D., Arantes, G., Rheault, I., Pichet, P., 1996. Evidence of early nervous system dysfunction in Amazonian populations exposed to low-levels of methylmercury. Neurotoxicology 17 (1) 157-167] of mercury toxicity has been trickling in. With mercury contaminating rain-, ground- and sea-water no one is safe. Polluted water leads to mercury laced fish, meat and vegetable. In aquatic environments, inorganic mercury is microbiologically transformed into lipophilic organic compound ‘methylmercury’. This transformation makes mercury more prone to biomagnification in food chains. Consequently, populations with traditionally high dietary intake of food originating from fresh or marine environment have highest dietary exposure to mercury. Extensive research done on locals across the globe have already established this, persons who routinely consume fish or a particular species of fish are at an increased risk of methylmercury poisoning. The easy access of the toxicant to man through multiple pathways air, water, food, cosmetic products and even vaccines increase the exposure. Foetus and children are more susceptible towards mercury toxicity. Mothers consuming diet containing mercury pass the toxicant to foetus and to infants through breast milk. Decreased performance in areas of motor function and memory has been reported among children exposed to presumably safe mercury levels. Similarly, disruption of attention, fine motor function and verbal memory was also found in adults on exposure to low mercury levels. It is an occupational hazard for dental staff, chloralkali factory workers and goldminers, etc. Mercury has been found to be a causative agent of various sorts of disorders, including neurological, nephrological, immunological, cardiac, motor, reproductive and even genetic. Recently heavy metal mediated toxicity has been linked to diseases like Alzeihemer’s, Parkinson’s, Autism, Lupus, Amyotrophic lateral sclerosis, etc. Besides this, it poses danger to wildlife. Therefore, it becomes imperative to spread the information regarding the threat of mercury exposure amongst the scientists and masses. http://www.ncbi.nlm.nih.gov/pubmed/?term=21783611 “Recently heavy metal mediated toxicity has been linked to diseases like Alzeihemer’s, Parkinson’s, Autism, Lupus, Amyotrophic lateral sclerosis, etc. Besides this, it poses danger to wildlife. Therefore, it becomes imperative to spread the information regarding the threat of mercury exposure amongst the scientists and masses.” “Repetitive doses of thimerosal leads to neurobehavioral deteriorations ...” Neuro Endocrinology Letters • October 2005 Mercury and autism: accelerating evidence? Author information Mutter J1, Naumann J, Schneider R, Walach H, Haley B. Institute for Environmental Medicine and Hospital Epidemiology University Hospital Freiburg, Germany joachim.mutter@uniklinik-freiburg.de Abstract The causes of autism and neurodevelopmental disorders are unknown. Genetic and environmental risk factors seem to be involved. Because of an observed increase in autism in the last decades, which parallels cumulative mercury exposure, it was proposed that autism may be in part caused by mercury. We review the evidence for this proposal. Several epidemiological studies failed to find a correlation between mercury exposure through thimerosal, a preservative used in vaccines, and the risk of autism. Recently, it was found that autistic children had a higher mercury exposure during pregnancy due to maternal dental amalgam and thimerosal-containing immunoglobulin shots. It was hypothesized that children with autism have a decreased detoxification capacity due to genetic polymorphism. In vitro, mercury and thimerosal in levels found several days after vaccination inhibit methionine synthetase (MS) by 50%. Normal function of MS is crucial in biochemical steps necessary for brain development, attention and production of glutathione, an important antioxidative and detoxifying agent. Repetitive doses of thimerosal leads to neurobehavioral deteriorations in autoimmune susceptible mice, increased oxidative stress and decreased intracellular levels of glutathione in vitro. Subsequently, autistic children have significantly decreased level of reduced glutathione. Promising treatments of autism involve detoxification of mercury, and supplementation of deficient metabolites. http://www.ncbi.nlm.nih.gov/pubmed/16264412 International Journal Of Molecular Medicine • December 2005 Thimerosal induces neuronal cell apoptosis by causing cytochrome c and apoptosis-inducing factor release from mitochondria Author information Yel L1, Brown LE, Su K, Gollapudi S, Gupta S. Department of Medicine University of California, Irvine, CA 92697, USA lyel@uci.edu Abstract There is a worldwide increasing concern over the neurological risks of thimerosal (ethylmercury thiosalicylate) which is an organic mercury compound that is commonly used as an antimicrobial preservative. In this study, we show that thimerosal, at nanomolar concentrations, induces neuronal cell death through the mitochondrial pathway. Thimerosal, in a concentration- and time-dependent manner, decreased cell viability as assessed by calcein-ethidium staining and caused apoptosis detected by Hoechst 33258 dye. Thimerosal-induced apoptosis was associated with depolarization of mitochondrial membrane, generation of reactive oxygen species, and release of cytochrome c and apoptosis-inducing factor (AIF) from mitochondria to cytosol. Although thimerosal did not affect cellular expression of Bax at the protein level, we observed translocation of Bax from cytosol to mitochondria. Finally, caspase-9 and caspase-3 were activated in the absence of caspase-8 activation. Our data suggest that thimerosal causes apoptosis in neuroblastoma cells by changing the mitochondrial microenvironment. http://www.ncbi.nlm.nih.gov/pubmed/16273274 “Our data suggest that thimerosal causes apoptosis in neuroblastoma cells by changing the mitochondrial microenvironment.” Medical Veritas • 2005 Mercury toxicity: Genetic susceptibility and synergistic effects Boyd E. Haley, PhD Professor and Chair • Department of Chemistry University of Kentucky Abstract Mercury toxicity and intoxication (poisoning) are realities that every American needs to face. Both the Environmental Protection Agency and National Academy of Science state that between 8 to 10% of American women have mercury levels that would render any child they gave birth to neurological disorders. One of six children in the USA have a neurodevelopmental disorder according to the Centers for Disease Control and Preven- tion. Yet our dentistry and medicine continue to expose all patients to mercury. This article discusses the obvious sources of mercury exposures that can be easily prevented. It also points out that genetic susceptibility and exposures to other materials that synergistically enhance mercury and ethyl- mercury toxicity need to be evaluated, and that by their existence prevent the actual determination of a “safe level” of mercury exposure for all. The mercury sources we consider are from dentistry and from drugs, mainly vaccines, that, in today’s world are not only unnecessary sources, but also sources that are being increasingly recognized as being significantly deleterious to the health of many. Excerpts circles will cause the death of about 70% of the neurons within 24 hours. The synergistic effects of aluminum, neomycin and tes- tosterone are shown (Fig. 6) and are as follows: Aluminum: Aluminum hydroxide alone at 500 nM showed no significant death of cells at 6 hours, and only slight toxicity over the 24-hour period. Thimerosal at 50 nM effected only a slight increase in neuron death at 6 hours. However, in the presence of 50 nM thimerosal plus 500 nM aluminum hydroxide (open triangles [Δ]), the neuronal death increases to roughly 60%, an amazing increase and clearly demonstrates the synergistic effects of other metals on mercury toxicity and certainly thimerosal toxicity. Neomycin: At 1.75 mcg neomycin alone (solid squares) did not cause a significant increase in neuronal death after 12 hours. In the presence of 50 nM thimerosal (open squares) the rate of death at same point increased from about 40% to 60%, a 20% increase in rate of death. 4. Hormonal effects: Testosterone and Estrogen 3. Synergistic effects: Thimerosal, aluminum hydroxide and Neomycin It is well documented in the literature that mercury toxicity is synergistic with other heavy metals such as cadmium and lead. It is also known that certain antibiotics greatly enhance the toxicity of thimerosal in ocular solutions and that antibiotics prevent test animals from effectively excreting mercury. The major known difference between males and females is their hormones. We therefore investigated the possible involvement of aluminum cation (found in vaccines), antibiotics (neomycin) and male versus female (estrogen versus testosterone) on the toxic effects of 50 nanomolar (nM) thimerosal on neurons in culture. Neurons can be cultured for 24 hours without much death (Fig. 6). Fifty nanomolar thimerosal alone (solid Testosterone and estrogen-like compounds give vastly dif- ferent results. Using female hormones we found them not toxic to the neurons alone and to be consistently protective against thimerosal toxicity. In fact, at high levels they could afford total protection for 24 hours against neuronal death in this test sys- tem (data not plotted). However, testosterone which appeared protective at very low levels (0.01 to 0.1 micromolar), dramati- cally increased neuron death at higher levels (0.5 to 1.0 micro- molar). In fact, 1.0 micromolar levels of testosterone that by itself did not significantly increase neuron death (red flattened oval), within 3 hours when added with 50 nanomolar thimerosal (solid circles) caused 100% neuron death. Fifty nanomolar thimerosal at this time point did not significantly cause any cell death. Full Report http://www.1796kotok.com/pdfs/haley.pdf “In fact, 1.0 micromolar levels of testosterone that by itself did not significantly increase neuron death, within 3 hours when added with 50 nanomolar thimerosal caused 100% neuron death.” “... there are a number of other diseases that may have a chronic mercury toxicity component, such as Alzheimer’s disease, heart disease, obesity, ALS, asthma, and other various forms of autoimmune disorders ...” Medical Hypotheses • 2005 The potential importance of steroids in the treatment of autistic spectrum disorders and other disorders involving mercury toxicity Author information Geier MR1, Geier DA. The Genetic Centers of America, 14 Redgate Ct., Silver Spring, MD 20905, USA mgeier@comcast.net Abstract Autism is a neurodevelopmental disorder that according to the Centers for Disease Control and Prevention (CDC) affects 1 in 150 children in the United States. Autism is characterized by impairments in social relatedness and communication, repetitive behaviors, abnormal movements, and sensory dysfunction. Recently emerging evidence suggests that mercury, especially from childhood vaccines, appears to be a factor in the development of the autistic disorders, and that autistic children have higher than normal body-burdens of mercury. In considering mercury toxicity, it has previously been shown that testosterone significantly potentates mercury toxicity, whereas estrogen is protective. Examination of autistic children has shown that the severity of autistic disorders correlates with the amount of testosterone present in the amniotic fluid, and an examination of a case-series of autistic children has shown that some have plasma testosterone levels that were significantly elevated in comparison neurotypical control children. A review of some of the current biomedical therapies for autistics, such as glutathione and cysteine, chelation, secretin, and growth hormone, suggests that they may in fact lower testosterone levels. We put forward the medical hypothesis that autistic disorders, in fact, represents a form of testosterone mercury toxicity, and based upon this observation, one can design novel treatments for autistics directed towards higher testosterone levels in autistic children. We suggest a series of experiments that need to be conducted in order to evaluate the exact mechanisms for mercury-testosterone toxicity, and various types of clinical manipulations that may be employed to control testosterone levels. It is hoped by devising therapies that address the steroid hormone pathways, in addition to the current treatments that successful lower heavy metal body-burdens of mercury, will work synergistically to improve clinical outcomes. In light of the fact that there are a number of other diseases that may have a chronic mercury toxicity component, such as Alzheimer’s disease, heart disease, obesity, ALS, asthma, and other various forms of autoimmune disorders, it is imperative that further research should be conducted to understand mercury-testosterone toxicity. http://www.ncbi.nlm.nih.gov/pubmed/15780490 Toxicology Letters • February 2006 A cascade analysis of the interaction of mercury and coproporphyrinogen oxidase (CPOX) polymorphism on the heme biosynthetic pathway and porphyrin production Author information Heyer NJ1, Bittner AC Jr, Echeverria D, Woods JS. Battelle Centers for Public Health Research and Evaluation 1100 Dexter Avenue N, Suite 400, Seattle, WA 98109, USA Abstract Mercury (Hg) exposure in various forms remains a persistent public health concern in many parts of the world. In previous studies, we have described a biomarker of mercury exposure characterized by increased urinary concentrations of specific porphyrins, pentacarboxyporphyrin (5-CP) and coproporphyrin (4-CP), and the atypical keto-isocoproporphyrin (KICP), based on selective interference with the fifth (uroporphyrinogen decarboxylase, UROD) and sixth (coproporphyrinogen oxidase, CPOX) enzymes of the heme biosynthetic pathway. Whereas this response occurs in a predictable manner among approximately 85% of subjects with Hg exposure, an atypical porphyrinogenic response (APR) has been observed in approximately 15% of Hg-exposed persons, in which the three porphyrins that are affected by Hg, i.e., 5-CP, 4-CP and, KICP, are excreted in substantial excess of that predicted on the basis of Hg exposure alone. This APR has been attributed to a specific polymorphism in exon 4 of the CPOX gene (CPOX4). In the present study, we sought to further confirm the hypothesis that the observed changes in porphyrin excretion patterns might serve as a biomarker of Hg exposure and potential toxicity by statistically modeling the cascading effects on porphyrin concentrations within the heme biosynthetic pathway of Hg exposure and CPOX4 polymorphism in a human population with long-term occupational exposure to elemental mercury. Our results are highly consistent with this hypothesis. After controlling for precursor porphyrin concentrations, we demonstrated that 5-CP and 4-CP are independently associated with Hg concentration, while KICP is associated only with the CPOX4. An unpredicted association of Hg with heptacarboxyporphyrin (7-CP) may indicate a previously unidentified point of mercury inhibition of UROD. These findings lend further support to the proposed utility of urinary porphyrin changes as a biomarker of exposure and potential toxicity in subjects with mercury exposure. Additionally, these findings demonstrate the successful application of a computational model for characterizing complex metabolic responses and interactions associated with both toxicant exposure and genetic variation in human subjects. http://www.ncbi.nlm.nih.gov/pubmed/?term=16214298 “Mercury (Hg) exposure in various forms remains a persistent public health concern in many parts of the world ... these findings demonstrate the successful application of a computational model for characterizing complex metabolic responses and interactions associated with both toxicant exposure and genetic variation in human subjects.” Neuro Endocrinology Letters • February 2006 Metal-specific lymphocyte reactivity is downregulated after dental metal replacement Author information Yaqob A1, Danersund A, Stejskal VD, Lindvall A, Hudecek R, Lindh U. Foundation for Metal Biology, Uppsala, Sweden Abstract OBJECTIVES This study was done to evaluate the results and clinical relevance of an optimized lymphocyte proliferation test, MELISA, for metal-induced inflammation in patients with CFS-like symptoms. The treatment of patients consisted of the replacement of incompatible dental materials (RID) together with supportive anti-oxidant therapy. DESIGN OF THE STUDY 513 patients were tested by MELISA at the beginning of the study. Out of this group, 248 patients were available for follow-up MELISA after RID. METHODS In MELISA, lymphocytes are isolated from the blood and cultivated with different metal salts in tissue culture medium containing 10% inactivated human AB+ serum or autologous serum. After 5 days, the presence of metal-reactive lymphocytes are measured by isotope labelling of newly formed DNA in growing lymphoblasts and evaluated by calculating the Stimulation Index. RESULTS Nickel was the most common sensitizer, followed by inorganic mercury, thimerosal, lead, cadmium, palladium and gold. After RID treatment, a decrease of metal-specific lymphocyte responses in patients who reacted to metals at the beginning of the study could be observed. The cultivation of lymphocytes in autologous and homologous serum did not significantly affect the results. Simultaneous, the health status of patients improved as well. CONCLUSIONS Replacement of incompatible dental materials resulted in down-regulation of metalinduced lymphocyte sensitivity in vitro, as well as in the improvement of health status of majority of patients with unspecific CFS-like symptoms. http://www.ncbi.nlm.nih.gov/pubmed/16648791 “Replacement of incompatible dental materials resulted in down-regulation of metal-induced lymphocyte sensitivity in vitro, as well as in the improvement of health status of majority of patients with unspecific Chronic Fatigue-like symptoms.” Oxford Journals Toxicological Sciences • April 2006 Thimerosal Induces Apoptosis in a Neuroblastoma Model via the cJun N-Terminal Kinase Pathway Author Information Michelle L. Herdman*, Aileen Marcelo*, Ying Huang† Richard M. Niles†, Sanjit Dhar‡ and Kinsley Kelley Kiningham* Departments of *Pharmacology, Physiology and Toxicology and †Biochemistry and Microbiology Joan C. Edwards School of Medicine, Marshall University Huntington, West Virginia 25704 ‡Graduate Center for Toxicology University of Kentucky Lexington, Kentucky 40536 kiningham@marshall.edu. Abstract The cJun N-terminal kinase (JNK)-signaling pathway is activated in response to a variety of stimuli, including environmental insults, and has been implicated in neuronal apoptosis. In this study, we investigated the role that the JNK pathway plays in neurotoxicity caused by thimerosal, an ethylmercury-containing preservative. SK-NSH cells treated with thimerosal (0–10μM) showed an increase in the phosphorylated (active) form of JNK and cJun with 5 and 10μM thimerosal treatment at 2 and 4 h. To examine activator protein-1 (AP-1) transcription, cells were transfected with a pGL2 vector containing four AP-1 consensus sequences and then treated with thimerosal (0–2.5μM) for 24 h. Luciferase studies showed an increase in AP-1 transcriptional activity upon thimerosal administration. To determine the components of the AP-1 complex, cells were transfected with a dominant negative to either cFos (A-Fos) or cJun (TAM67). Reporter analysis showed that TAM67, but not A-Fos, decreased AP1 transcriptional activity, indicating a role for cJun in this pathway. To assess which components are essential to apoptosis, cells were treated with a cell-permeable JNK inhibitor II (SP600125) or transfected with TAM67, and the downstream effectors of apoptosis were analyzed. Cells pretreated with SP600125 showed decreases in activation of caspases 9 and 3, decreases in degradation of poly(ADP-ribose) polymerase (PARP), and decreased levels of proapoptotic Bim, in comparison to cells treated with thimerosal alone. However, cells transfected with TAM67 showed no changes in those same components. Taken together, these results indicate that thimerosal-induced neurotoxicity occurs through the JNK-signaling pathway, independent of cJun activation, leading ultimately to apoptotic cell death. http://toxsci.oxfordjournals.org/content/92/1/246.long “Taken together, these results indicate that thimerosal-induced neurotoxicity occurs through the JNK-signaling pathway, independent of cJun activation, leading ultimately to apoptotic cell death.” Medical Science Monitor • June 2006 An assessment of downward trends in neurodevelopmental disorders in the USA following removal of Thimerosal from childhood vaccines Author Information Geier DA1, Geier MR. Department of Biochemistry George Washington University, Washington, DC, USA Abstract BACKGROUND The US is in the midst of an epidemic of neurodevelopmental disorders (NDs). Thimerosal is an ethylmercury-containing compound added to some childhood vaccines. Several previous epidemiological studies conducted in the US have associated Thimerosal-containing vaccine (TCV) administration with NDs. MATERIAL/METHODS An ecological study was undertaken to evaluate NDs reported to the Vaccine Adverse Event Reporting System (VAERS) from 1991 through 2004 by date of receipt and by date of vaccine administration. The NDs examined included autism, mental retardation, and speech disorders. Statistical trend analysis was employed to evaluate the effects of removal of Thimerosal on the proportion of NDs reported to VAERS. RESULTS There was a peak in the proportion of ND reports received by VAERS in 2001-2002 and in the proportion of ND reports by date of vaccine administration in 1998. There were significant reductions in the proportion of NDs reported to VAERS as Thimerosal was begun to be removed from childhood vaccines in the US from mid1999 onwards. CONCLUSIONS The present study provides the first epidemiological evidence showing that as Thimerosal was removed from childhood vaccines, the number of NDs has decreased in the US. The analysis techniques utilized attempted to minimize chance or bias/ confounding. Additional research should be conducted to further evaluate the relationship between TCVs and NDs. This is especially true because the handling of vaccine safety data from the National Immunization Program of the CDC has been called into question by the Institute of Medicine of the National Academy of Sciences in 2005. http://www.ncbi.nlm.nih.gov/pubmed/16733480 “The present study provides the first epidemiological evidence showing that as Thimerosal was removed from childhood vaccines, the number of neurodevelopmental disorders has decreased in the US. Neuro Endocrinology Letters • August 2006 A meta-analysis epidemiological assessment of neurodevelopmental disorders following vaccines administered from 1994 through 2000 in the United States Author information Geier DA1, Geier MR. The Institute for Chronic Illnesses, Inc., Silver Spring, MD 20905, USA mgeier@comcast.net Abstract BACKGROUND Thimerosal is an ethylmercury-containing compound (49.6% mercury by weight) used as at the preservative level in vaccines (0.005% to 0.01%). METHODS Statistical modeling in a meta-analysis epidemiological assessment of the Vaccine Adverse Event Reporting System (VAERS) for neurodevelopment disorders (NDs) reported following Diphtheria-Tetanus-whole-cell-Pertussis (DTP) vaccines in comparison to Diphtheria-Tetanus-whole-cell-Pertussis-Haemophilus Influenzae Type b (DTPH) vaccines (administered: 1994-1997) and following Thimerosal-containing Diphtheria-Tetanus-acellular-Pertussis (DTaP), vaccines in comparison to Thimerosal-free DTaP vaccines (administered: 19972000), was undertaken. RESULTS Significantly increased adjusted (sex, age, vaccine type, vaccine manufacturer) risks of autism, speech disorders, mental retardation, personality disorders, thinking abnormalities, ataxia, and NDs in general, with minimal systematic error or confounding, were associated with TCV exposure. CONCLUSION It is clear from the results of the present epidemiological study and other recently published data associating mercury exposure with childhood NDs, additional ND research should be undertaken in the context of evaluating mercury-associated exposures, especially from Thimerosal-containing vaccines. http://www.ncbi.nlm.nih.gov/pubmed/16807526 “It is clear from the results of the present epidemiological study and other recently published data associating mercury exposure with childhood neurological disorders.” “Autism was recently associated with a urinary porphyrin pattern indicative of mercury toxicity ...” Neurotoxicity Research • August 2006 A prospective assessment of porphyrins in autistic disorders: a potential marker for heavy metal exposure Author information Geier DA1, Geier MR. The Institute for Chronic Illnesses, Silver Spring, MD 20905, USA Abstract Autism was recently associated with a urinary porphyrin pattern indicative of mercury toxicity in a large cohort of French children. The IRB of the Institute for Chronic Illnesses approved the present study. A total of 37 consecutive American patients (> or = 7 years-old) with autism spectrum disorders (ASDs) (Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition-DSM IV), born from 1983-1998, that presented to the Genetic Centers of America for outpatient genetic evaluations were prospectively examined for urinary prophryin levels (LabCorp, Inc.) from June 2005-June 2006. Imaging and laboratory testing were conducted on each patient to rule-out other causal factors for their ASDs. As controls, age-, sex-, and race-matched neurotypical ASD siblings were examined. An apparent dose-response effect was observed between autism severity and increased urinary coproporphyrins. Patients with non-chelated autism (2.25-fold, 83% had levels > 2 SD above the control mean) and non-chelated ASDs (2-fold, 58% had levels > 2 SD above the control mean), but not patients with non-chelated pervasive developmental delay-not otherwise specified (PDD-NOS) or Asperger’s disorder (1.4-fold, 46% had levels > 2 SD above the control mean), had significantly increased median coproporphyrin levels versus controls. A significant increase (1.7-fold) in median coproporphyrin levels was observed among non-chelated ASD patients versus chelated ASD patients. Porphyrins should be routinely clinically measured in ASDs, and potential ASD treatments should consider monitoring porphyrin levels. Additional research should be conducted to evaluate the potential role for mercury exposure in some ASDs. http://www.ncbi.nlm.nih.gov/pubmed/17000470 “Significantly increased odds ratios for autism, speech disorders, mental retardation, infantile spasms, and thinking abnormalities reported to VAERS were found following DTP vaccines in comparison to DTPH vaccines with minimal bias or systematic error.” Journal Of Toxicology And Environmental Health Part A • August 2006 An evaluation of the effects of thimerosal on neurodevelopmental disorders reported following DTP and Hib vaccines in comparison to DTPH vaccine in the United States Author information Geier DA1, Geier MR. The Genetic Centers of America, Silver Spring, Maryland 20905, USA mgeier@comcast.net Abstract Thimerosal is an ethylmercury (49.55% mercury by weight) preservative historically added to some vaccines. Toxicokinetic studies showed children in the United States received doses of mercury from Thimerosal-containing vaccines (TCVs) in excess of safety guidelines. In the United States during the 1990s, diphtheria-tetanus-pertussis (DTP) and Haemophilus influenzae type b (Hib) vaccines (maximally, 50 mug mercury per joint administration) and diphtheria-tetanus-pertussis-Haemophilus influenzae type b (DTPH) vaccines (25 mug mercury per administration) were given to children in the same childhood vaccination schedule at 2, 4, 6, and 15-18 mo, so that children receiving DTP and Hib vaccines may have maximally received an additional 100 mug more mercury exposure from TCVs than children administered DTPH vaccines. A case-control epidemiological study of neurodevelopmental disorders (NDs) reported to the Vaccine Adverse Event Reporting System (VAERS) (online public access version; updated 31 August 2004) following administration of DTP vaccines in comparison DTPH vaccines manufactured by Lederle Laboratories (Pearl River, NY) from 1994 through 1998 was undertaken. Significantly increased odds ratios for autism, speech disorders, mental retardation, infantile spasms, and thinking abnormalities reported to VAERS were found following DTP vaccines in comparison to DTPH vaccines with minimal bias or systematic error. Additional ND research should be undertaken in the context of evaluating mercury-associated exposures, especially since in 2005 the Institute of Medicine issued a report calling into question handling of vaccine safety data by the National Immunization Program of the Centers for Disease Control and Prevention. http://www.ncbi.nlm.nih.gov/pubmed/16766480 Environmental Toxicology And Pharmacology • September 2006 Thimerosal induces oxidative stress in HeLa S epithelial cells Author information Lee S1, Mian MF, Lee HJ, Kang CB, Kim JS, Ryu SH, Suh PG, Kim E. Laboratory of Toxicology Institute of Animal Medicine College of Veterinary Medicine Gyeongsang National University Gajwa-Dong, Jinju 660-701 Republic of Korea Abstract Thimerosal is one of the most widely used preservatives and is found in a variety of biological products, including vaccines, contact lens cleaning solutions, and cosmetics. It has been reported to have harmful effects on epithelial tissues, such as causing conjunctivitis or contact dermatitis. However, the molecular mechanism of its toxicity has not been characterized using epithelial tissues. In the present study, we report that reactive oxygen species play a key role in thimerosal-induced cytotoxicity in HeLa S epithelial cells. Thimerosal significantly reduced HeLa S cell viability and it was associated with a decrease in intracellular glutathione levels. Flow cytometric cell cycle analysis showed a marked increase in the hypodiploidic cell population, indicating apoptosis of thimerosal-treated cells. The apoptotic cell death of epithelial cells was confirmed by observing a significant increase of caspase-3 activity in the cytosolic fraction of the treated cells. Thimerosal also induced a concentration-dependent increase of genomic DNA fragmentation, a biochemical hallmark of apoptosis. Hoechst 33342 nuclear staining demonstrated apoptoticfragmented multinuclei in thimerosal-treated cells. All the thimerosal-mediated toxic responses observed in the present study were almost completely suppressed by pretreating cells with N-acetyl-lcysteine, a radical scavenger. Taken together, these results suggest for the first time that epithelial cytotoxicity of thimerosal is mediated by oxidative stress. http://www.ncbi.nlm.nih.gov/pubmed/?term=21783709 “[thimerosal] has been reported to have harmful effects on epithelial tissues, such as causing conjunctivitis or contact dermatitis. Thimerosal also induced a concentration-dependent increase of genomic DNA fragmentation, a biochemical hallmark of apoptosis. Taken together, these results suggest for the first time that epithelial cytotoxicity of thimerosal is mediated by oxidative stress.” “... some autism spectrum disorders may result from ... exposure to mercury.” Neuro Endocrinology Letters • December 2006 A clinical trial of combined anti-androgen and anti-heavy metal therapy in autistic disorders Author information Geier DA1, Geier MR. Institute of Chronic Illnesses, Silver Spring, MD 20905, USA Abstract BACKGROUND A medical hypothesis has suggested that some autism spectrum disorders (ASDs) may result from interactions between the methionine cycle-transsulfuration and androgen pathways following exposure to mercury. METHODS The IRB of the Institute for Chronic Illnesses approved the present study. A novel treatment was utilized combining LUPRON (leuprolide acetate, TAP Pharmaceuticals, Inc.) and CHEMET (meso-2, 3-dimercaptosuccinic acid--DMSA, McNeil Consumer Products Company) on 11 consecutive children with ASDs. RESULTS A significant (p<0.01) overall improvement from the 70-79th percentile of severity (median baseline score=87) at baseline to the 40-49th percentile of severity (median end of study period score=63) at the end of the study was observed for patients treated for a median of approximately 4 months. Significant improvements in sociability, cognitive awareness, behavior, and clinical symptoms/behaviors of hyperandrogenemia were also observed. Significant decreases in blood androgens and increases in urinary heavy metal concentrations were observed. Minimal drug adverse effects were found. CONCLUSION This study provides the first clinical evidence for the benefit that combined anti-androgen and anti-heavy metal therapy may have on some children with ASDs. Additional studies should examine androgen and heavy metal mechanisms of action in ASDs, and future ASD treatment protocols should consider androgens and heavy metals. http://www.ncbi.nlm.nih.gov/pubmed/17187010 [an example of disagreement within the research community] Critical Reviews In Toxicology • December 2007 The toxicology of mercury and its chemical compounds Comments on the article “the toxicology of mercury and its chemical compounds” by Clarkson and Magos (2006) Author information Author information Clarkson TW1, Magos L. Mutter J1, Naumann J, Guethlin C. Department of Environmental Medicine University of Rochester School of Medicine New York, USA Twc30@aol.co University Hospital Institute for Environmental Medicine and Hospital Epidemiology Freiburg, Germany joachim.mutter@uniklinik-freiburg.de Abstract Abstract This review covers the toxicology of mercury and its compounds. Special attention is paid to those forms of mercury of current public health concern. Human exposure to the vapor of metallic mercury dates back to antiquity but continues today in occupational settings and from dental amalgam. Health risks from methylmercury in edible tissues of fish have been the subject of several large epidemiological investigations and continue to be the subject of intense debate. Ethylmercury in the form of a preservative, thimerosal, added to certain vaccines, is the most recent form of mercury that has become a public health concern. The review leads to general discussion of evolutionary aspects of mercury, protective and toxic mechanisms, and ends on a note that mercury is still an “element of mystery.” Clarkson and Magos (2006) provide their perspectives on the toxicology of mercury vapor and dental amalgam. As scientists who are involved in preparing a German federal guideline regarding dental amalgam, we welcome additional scientific data on this issue. However, Clarkson and Magos do not present all the relevant studies in their review. Critical Reviews In Toxicology • December 2006 http://www.ncbi.nlm.nih.gov/pubmed/16973445 The additional data provided here show that: (a) Dental amalgam is the main source of human total mercury body burden, because individuals with amalgam have 2-12 times more mercury in their body tissues compared to individuals without amalgam; (b) there is not necessarily a correlation between mercury levels in blood, urine, or hair and in body tissues, and none of the parameters correlate with severity of symptoms; (c) the half-life of mercury deposits in brain and bone tissues could last from several years to decades, and thus mercury accumulates over time of exposure; (d) mercury, in particular mercury vapor, is known to be the most toxic nonradioactive element, and is toxic even in very low doses, and (e) some studies which conclude that amalgam fillings are safe for human beings have important methodogical flaws. Therefore, they have no value for assessing the safety of amalgam. http://www.ncbi.nlm.nih.gov/pubmed/17661216 Toxicology • February 2007 Cell death and cytotoxic effects in YAC-1 lymphoma cells following exposure to various forms of mercury Author information Yole M1, Wickstrom M, Blakley B. Department of Veterinary Biomedical Sciences Western College of Veterinary Medicine 52 Campus Drive, University of Saskatchewan Saskatoon SK S7N 5B4, Canada yole@sask.usask.ca Abstract The effects of 1 min-4 h exposures to four Hg compounds (mercuric chloride [HgCl2], methyl mercuric chloride [CH3HgCl], p-chloromercuribenzoate [p-CMB] and thimerosal [TMS; ethylmercurithiosalicylate]) on cell death, microtubules, actin, CD3 receptor expression, protein tyrosine phosphorylation (PTyr-P) and intracellular calcium ([Ca2+]i) levels were investigated in YAC-1 lymphoma cells using flow cytometry. YOPRO-1 (YP) and propidium iodide (PI) dye uptake indicated all forms of Hg tested were toxic at concentrations ranging from 25.8-48.4 microM, with two distinct patterns of effects. Early apoptosis was prolonged for CH3HgCl- and TMS-treated cells, with more than 50% remaining YP+/PI- after 4h. Both CH3HgCl and TMS induced complete loss of beta-tubulin fluorescence, indicative of microtubule depolymerization and inhibition of tubulin synthesis and/ or beta-tubulin degradation, while F-actin fluorescence diminished to a lesser degree and only after loss beta-tubulin. CH3HgCl and TMS induced an almost immediate two-fold increase in CD3 fluorescence, with levels returning to baseline within minutes. With continued exposure, CD3 fluorescence was reduced to approximately 50% of baseline values. Both compounds also increased PTyr-P two- to three-fold immediately, with levels returning to baseline at 4h. Similarly, two- to three-fold increases in [Ca2+]i were noted after 1 min exposure. [Ca2+]i increased progressively, reaching levels five- to eight-fold greater than control values. In contrast, dye uptake was delayed with HgCl2 and p-CMB, although cell death proceeded rapidly, with almost all non-viable cells being late apoptotic (YP+/PI+) by 4h. p-CMB produced early reductions in F-actin, and after 4h, complete loss of F-actin with only partial reduction of total beta-tubulin was seen with both p-CMB and HgCl2. HgCl2 reduced CD3 expression and PTyr-P slightly within minutes, while p-CMB produced similar effects on CD3 only at 4h, at which time PTyr-P was increased two- to three-fold. Both compounds increased [Ca2+]i within minutes, though levels remained under twice the baseline concentration after 15 min exposure. With continued exposure, [Ca2+]i increased to levels two- to five-fold greater than control values. These findings indicate the two groups of Hg compounds may induce cell death by distinct pathways, reflecting interactions with different cellular targets leading to cell death. http://www.ncbi.nlm.nih.gov/pubmed/?term=17210217 “These findings indicate the two groups of mercury compounds may induce cell death by distinct pathways, reflecting interactions with different cellular targets leading to cell death.” Integrative Medicine • Vol. 6, No. 2 • April 2007 Heavy-Metal Toxicity—With Emphasis on Mercury by John Neustadt, ND, and Steve Pieczenik, MD, PhD • Recommended Report • http://montanaim.com/pubs/Heavy_Metals_Article.pdf “8 of 9 patients examined were exposed to significant mercury from Thimerosal-containing biologic/vaccine preparations during their fetal/infant developmental periods, and subsequently, between 12 and 24 mo of age, these previously normally developing children suffered mercury toxic encephalopathies that manifested with clinical symptoms consistent with regressive Autistic Spectrum Disorders.” Journal Of Toxicology And Environmental Health Part A • May 2007 A case series of children with apparent mercury toxic encephalopathies manifesting with clinical symptoms of regressive autistic disorders Author information Geier DA1, Geier MR. Institute of Chronic Illnesses, Inc., Silver Spring, Maryland, USA Abstract Impairments in social relatedness and communication, repetitive behaviors, and stereotypic abnormal movement patterns characterize autism spectrum disorders (ASDs). It is clear that while genetic factors are important to the pathogenesis of ASDs, mercury exposure can induce immune, sensory, neurological, motor, and behavioral dysfunctions similar to traits defining or associated with ASDs. The Institutional Review Board of the Institute for Chronic Illnesses (Office for Human Research Protections, U.S. Department of Health and Human Services, IRB number IRB00005375) approved the present study. A case series of nine patients who presented to the Genetic Centers of America for a genetic/developmental evaluation are discussed. Eight of nine patients (one patient was found to have an ASD due to Rett’s syndrome) (a) had regressive ASDs; (b) had elevated levels of androgens; (c) excreted significant amounts of mercury post chelation challenge; (d) had biochemical evidence of decreased function in their glutathione pathways; (e) had no known significant mercury exposure except from Thimerosal-containing vaccines/Rho(D)-immune globulin preparations; and (f) had alternate causes for their regressive ASDs ruled out. There was a significant dose-response relationship between the severity of the regressive ASDs observed and the total mercury dose children received from Thimerosal-containing vaccines/Rho (D)-immune globulin preparations. Based upon differential diagnoses, 8 of 9 patients examined were exposed to significant mercury from Thimerosal-containing biologic/vaccine preparations during their fetal/infant developmental periods, and subsequently, between 12 and 24 mo of age, these previously normally developing children suffered mercury toxic encephalopathies that manifested with clinical symptoms consistent with regressive ASDs. Evidence for mercury intoxication should be considered in the differential diagnosis as contributing to some regressive ASDs. http://www.ncbi.nlm.nih.gov/pubmed/17454560 Journal Of Maternal, Fetal And Neonatal Medicine • May 2007 A prospective study of thimerosal-containing Rho(D)-immune globulin administration as a risk factor for autistic disorders Author information Geier DA1, Geier MR. The Institute of Chronic Illnesses, Silver Spring, MD, USA Abstract BACKGROUND This study evaluated the relationship between prenatal mercury exposure from thimerosal (49.55% mercury by weight)-containing Rho(D)-immune globulins (TCRs) and autism spectrum disorders (ASDs). METHODS The Institutional Review Board of the Institute for Chronic Illnesses approved the present study. A total of 53 consecutive non-Jewish Caucasian patients with ASDs (Diagnostic and statistical manual of mental disorders, fourth ed. - DSM IV) born between 1987 and 2001 who presented to the Genetic Centers of America for outpatient genetic/developmental evaluations were prospectively collected from June 1, 2005 through March 31, 2006. Imaging and laboratory testing were conducted on each patient to rule out other causal factors for their ASDs. As race-matched controls, the frequency of Rh negativity was determined from 926 non-Jewish Caucasian pregnant women who had presented for outpatient prenatal genetics care to the Genetic Centers of America between 1980 and 1989. RESULTS Children with ASDs (28.30%) were significantly more likely (odds ratio 2.35, 95% confidence interval 1.17-4.52, p < 0.01) to have Rh-negative mothers than controls (14.36%). Each ASD patient’s mother was determined to have been administered a TCR during her pregnancy. CONCLUSION The results provide insights into the potential role prenatal mercury exposure may play in some children with ASDs. http://www.ncbi.nlm.nih.gov/pubmed/17674242 “Each Autisic Spectrum Disorder patient’s mother was determined to have been administered a Thimerosal-containing vaccine during her pregnancy … The results provide insights into the potential role prenatal mercury exposure may play in some children with Autisic Spectrum Disorders.” American Journal Of Perinatology • August 2007 Exposure to mercury during the first six months via human milk and vaccines: modifying risk factors Author information Dórea JG. Faculty of Health Sciences Universidade de Brasília Brasília, Brazil Abstract Breastfeeding is the best natural protection infants have against morbidity and mortality, and the development of safe and effective vaccines has made it possible to immunize children against infectious disease. Both of these mechanisms for ensuring good health in children may be compromised by contact with mercury (Hg). Maternal exposure to environmental Hg during pregnancy can predispose nursing children to neurodevelopmental disorders. Despite the World Health Organization assurance that thimerosalpreserved vaccines are safe to use in infants, the United States, the European Union, and dozens of other countries have eliminated thimerosal as a vaccine preservative and stopped the immunization of children with such vaccines. Because of the increase in environmental pollution and the need to produce cheap and safe vaccines, there is a need to address the uncertainty of vaccine-ethylmercury risk of toxicity and Hg exposure during breastfeeding. http://www.ncbi.nlm.nih.gov/pubmed/17564957 “Maternal exposure to environmental mercury during pregnancy can predispose nursing children to neurodevelopmental disorders.” European Journal Of Pediatrics • September 2007 Hair mercury in breast-fed infants exposed to thimerosal-preserved vaccines Author information Marques RC1, Dórea JG, Fonseca MF, Bastos WR, Malm O. Fundação Universidade Federal de Rondônia Porto Velho, RO, Brazil Abstract Because of uncertainties associated with a possible rise in neurodevelopmental deficits among vaccinated children, thimerosalpreserved vaccines have not been used since 2004 in the USA (with the exception of thimerosal-containing influenza vaccines which are routinely recommended for administration to pregnant women and children), and the EU but are widely produced and used in other countries. We investigated the impact of thimerosal on the total Hg in hair of 82 breast-fed infants during the first 6 months of life. The infants received three doses of the hepatitisB vaccine (at birth, 1 and 6 months) and three DTP (diphtheria, tetanus, and pertussis) doses at 2, 4 and 6 months, according to the immunization schedule recommended by the Ministry of Health of Brazil. The thimerosal in vaccines provided an ethylmercury (EtHg) exposure of 25 microgHg at birth, 30, 60 and 120 days, and 50 microgHg at 180 days. The exposure to vaccine-EtHg represents 80% of that expected from total breast milk-Hg in the first month but only 40% of the expected exposure integrated in the 6 months of breastfeeding. However, the Hg exposure corrected for body weight at the day of immunization was much higher from thimerosal- EtHg (5.7 to 11.3 microgHg/kg b.w.) than from breastfeeding (0.266 microgHg/kg b.w.). While mothers showed a relative decrease (-57%) in total hair-Hg during the 6 months lactation there was substantial increase in the infant’s hair-Hg (446%). We speculate that dose and parenteral mode of thimerosal-EtHg exposure modulated the relative increase in hair-Hg of breast-fed infants at 6 months of age. http://www.ncbi.nlm.nih.gov/pubmed/17237965 “Because of uncertainties associated with a possible rise in neuro-developmental deficits among vaccinated children, thimerosal-preserved vaccines have not been used since 2004 in the USA (with the exception of thimerosal-containing influenza vaccines which are routinely recommended for administration to pregnant women and children) ...” Journal Of Toxicology And Environmental Health Part A • October 2007 A prospective study of mercury toxicity biomarkers in autistic spectrum disorders Author information Geier DA1, Geier MR. Institute of Chronic Illnesses Silver Spring, Maryland, USA Abstract Porphyrins are derivatives formed in the heme synthesis pathway and porphyrins afford a measure of xenobiotic exposure. The steps in the heme pathway most vulnerable to heavy metal inhibition are uroporphyrin decarboxylase (UROD) and coproporphyrinogen oxidase (CPOX) reactions. Mercury toxicity was associated with elevations in urinary coproporphyrin (cP), pentacarboxyporphyrin (5cxP), and precoproporphyrin (prcP) (also known as keto-isocoproporphyrin) levels. Two cohorts of autistic patients in the United States and France had urine porphyrin levels associated with mercury toxicity. A prospective study of urinary porphyrin testing at LabCorp (United States) and the Laboratoire Philippe Auguste (France) involving 71 autism spectrum disorder (ASD) patients, neurotypical sibling controls, and general population controls was undertaken. ASD patients had significant elevations in urinary levels of cP, 5cxP, and prcP relative to controls, and > 50% of ASD patients had urinary cP levels more than 2 standard deviations above the mean values for neurotypical sibling controls. Significant reductions in urinary 5cxP and cP levels were observed in ASD patients following chelation. A significant correlation was found between urinary porphyrins measured at LabCorp and those measured at the Laboratoire Philippe Auguste on individual ASD patients. The established developmental neurotoxicity attributed to mercury and biochemical/genomic evidence for mercury susceptibility/toxicity in ASDs indicates a causal role for mercury. Urinary porphyrin testing is clinically available, relatively inexpensive, and noninvasive. Porphyrins need to be routinely measured in ASDs to establish if mercury toxicity is a causative factor and to evaluate the effectiveness of chelation therapy. http://www.ncbi.nlm.nih.gov/pubmed/17885929 “The established developmental neurotoxicity attributed to mercury and biochemical/genomic evidence for mercury susceptibility/toxicity in Autistic Spectrum Disorders indicates a causal role for mercury” Toxicological Sciences • October 2007 Modeling Neurodevelopment Outcomes and Ethylmercury Exposure from Thimerosal-Containing Vaccines Author Information José G. Dórea*,1 and Rejane C. Marques† *Universidade de Brasília, Brasília, DF, Brazil †Fundação Universidade Federal de Rondônia, Porto Velho, RO, Brazil dorea@rudah.com.br Dear Editor The neurotoxic effects of ethylmercury (EtHg) accidentally consumed in Iraq were sufficient to withdraw ethylmercury-containing fungicides as seed dressing. Despite that, not only did thimerosal continue to be used in pharmaceutical preparations but also toxicological interest in EtHg-derived substances diminished considerably and was never addressed with regard to the small quantities used as a vaccine preservative. Thimerosal-containing vaccines (TCV) have no record of overt clinical neurological consequences due to EtHg, and the plausibility of subtle neurotoxic effects in children has been recognized only recently by the United States and other industrialized countries. In this context, we welcome the interesting work of Berman et al. (2008); it is clear that this assiduous study (in immunologically susceptible mice) took into consideration doses and schedules of TCV-Hg concentrations that had been used in infants in the United States. Their mice model does not, however, cover the full extent of modifying factors associated with TCV-Hg exposure in the majority of immature and newborns around the world that still have to depend on TCV. According to Berman et al. (2008), the United States vaccination scheduled exposed a total of 125 μgHg distributed at 2, 2, and 6 months through TCV (hepatitis B and DTP). This type of vaccine is no longer used in industrialized countries but it is still used all over the world. We know that thimerosal concentrations vary among brands of vaccines and also that immunization schedules vary depending on a country’s health policy; not only that but new outbreaks of disease introduce additional new vaccines (which may contain thimerosal) during the first year of life. As an example, the public health services of Brazil, like other countries, still uses several brands of hepatitis B vaccine (containing thimerosal as preservative) with concentrations ranging from 12.5 to 50 μgHg per 0.5 ml shot. Another salient difference between countries that use TCV (like Brazil) and the United States is that in the former country hepatitis B inoculation starts within the first 12–24 h after birth (Marques et al., 2007) and is administered to low-birth weight ≥2000 g (Ministério, da Saúde, 2006 and premature babies who are also recommended a fourth shot as an additional booster (DI/DH/CVE, 2006). In such situations, not only toxicokinetics (TK) but especially toxicodynamics (TD) of EtHg are entirely different between a 1-dayold (with different stages of immaturity and birth weight) and a 60-day-old child (as modeled). The newborn presents several physiological degrees of immaturity in the excretory system (kid- neys and bile formation) and target organ (central nervous system, CNS) that are important modifiers of EtHg TK and TD. These features are inversely accentuated by gestational age and birth weight. Under such circumstances, unbound circulating EtHg in a newborn (and immature) may not be eliminated as fast as in a 2-month-old baby and thus will be readier to cross the more vulnerable blood-brain barrier (BBB). The newborn BBB increases in effectiveness with age; therefore, the free EtHg can more easily penetrate the immature CNS (Dorea, 2007). As a consequence, the smaller the body size and blood volume, the more altered the TD and TK of EtHg. Indeed, Stajich et al. (2000) showed that preterm infants do not metabolize Hg efficiently. Collectively, studies show that larger babies have significantly higher mean liver metallothionein than smaller babies (Dorea, 2007). Factors associated with protein-binding capacity, excretion mechanisms, and enzyme activities are immature in the neonate and modulate differences in adverse effects between newborns and infants exposed to neurotoxic substances. During the period of immaturity, not only plasma albumin but also total protein concentrations decrease (Dorea, 2007). The best example in differences between neurotoxic effects is the type of albumin and competition for binding sites (due to increased circulatory concentrations of bilirubin). Albumin binding (to bilirubin) is less effective during the first postnatal days and, as a consequence, excess free bilirubin can cross the BBB at early stages of the postnatal CNS immaturity and cause brainstem abnormalities; albumin priming can be effective in attenuating effects caused by unbound bilirubin (Dorea, 2007). We do not dispute the conclusions drawn by Berman et al. regarding Hg and the neurobiology of autism; however, we think it is possible to take their findings one step further in regards to thimerosal neurotoxicity. We contend that these findings are appropriate for U.S.-like scenarios (as intended by the authors) but are not sufficient to address the current TCV schedules in the majority of newborns and infants around the world. TCV are used worldwide in vaccination schedules that include more of these vaccines at an earlier age. Unfortunately, the differences that set newborns (especially low-birth-weights and prematures) apart from 2-month-old infants have not yet been modeled in experimental studies and remain neglected in TK and TD knowledge of TCV-EtHg exposure. We hope that studies like Berman et al. (2008) can inspire conventional toxicology to address uncertainties regarding current serial EtHg exposure in newborns and infants that have to take TCV. http://toxsci.oxfordjournals.org/content/103/2/414.long#ref-1 “the hair sample analysis results offer some support for the idea that persons with autism may be less efficient and more variable at eliminating mercury from the blood.” Journal Of Child Neurology • November 2007 Blood levels of mercury are related to diagnosis of autism: a reanalysis of an important data set Author information Desoto MC1, Hitlan RT. Department of Psychology University of Northern Iowa Cedar Falls, Iowa 50614, USA cathy.desoto@uni.edu Abstract The question of what is leading to the apparent increase in autism is of great importance. Like the link between aspirin and heart attack, even a small effect can have major health implications. If there is any link between autism and mercury, it is absolutely crucial that the first reports of the question are not falsely stating that no link occurs. We have reanalyzed the data set originally reported by Ip et al. in 2004 and have found that the original p value was in error and that a significant relation does exist between the blood levels of mercury and diagnosis of an autism spectrum disorder. Moreover, the hair sample analysis results offer some support for the idea that persons with autism may be less efficient and more variable at eliminating mercury from the blood. http://www.ncbi.nlm.nih.gov/pubmed/18006963 The Journal Of Toxicology And Environmental Health Part B - Critical Reviews • December 2007 A review of Thimerosal (Merthiolate) and its ethylmercury breakdown product: specific historical considerations regarding safety and effectiveness Author Information Geier DA1, Sykes LK, Geier MR. The Institute of Chronic Illnesses, Inc. Silver Spring, Maryland, USA Abstract Thimerosal (Merthiolate) is an ethylmercury-containing pharmaceutical compound that is 49.55% mercury and that was developed in 1927. Thimerosal has been marketed as an antimicrobial agent in a range of products, including topical antiseptic solutions and antiseptic ointments for treating cuts, nasal sprays, eye solutions, vaginal spermicides, diaper rash treatments, and perhaps most importantly as a preservative in vaccines and other injectable biological products, including Rho(D)-immune globulin preparations, despite evidence, dating to the early 1930s, indicating Thimerosal to be potentially hazardous to humans and inffective as an antimicrobial agent. Despite this, Thimerosal was not scrutinized as part of U.S. pharmaceutical products until the 1980s, when the U.S. Food and Drug Administration finally recognized its demonstrated ineffectiveness and toxicity in topical pharmaceutical products, and began to eliminate it from these. Ironically, while Thimerosal was being eliminated from topicals, it was becoming more and more ubiquitous in the recommended immunization schedule for infants and pregnant women. Furthermore, Thimerosal continues to be administered, as part of mandated immunizations and other pharmaceutical products, in the United States and globally. The ubiquitous and largely unchecked place of Thimerosal in pharmaceuticals, therefore, represents a medical crisis. http://www.ncbi.nlm.nih.gov/pubmed/18049924 “The ubiquitous and largely unchecked place of Thimerosal in pharmaceuticals, therefore, represents a medical crisis.” Anales de la Facultad de Medicina • 2007 Neurotoxic effects of thimerosal at vaccines doses on the encephalon and development in 7 day-old hamsters Laurente, Jonny, et al. Objectives To determine if thimerosal administration in amounts equivalent to vaccines content produces neurotoxic effects on the encephalon in postnatal hamsters and on experimentation animals’ development. Design Experimental, prospective, bietapic study. Setting San Fernando Faculty of Medicine, Universidad Nacional Mayor de San Marcos. Biologic material Seven-day old hamsters. Material We divided 45 postnatal hamsters in three groups: group A (n = 15), group B (n = 15) and group C (n = 15). We administered three intramuscular equivalent doses of sucrose and thimerosal in 20 μL of physiological serum respectively to groups B and C on birth-days 7 (0,227 μg), 9 (0,216 μg) and 11 (0,220 μg). Group A received only 20 μL of saline solution. Main outcome measures Body weight, encephalon weight, hamster’s stature and encephalon histopathological alterations. Results Anova and student t tests showed statistical significance in favor of low body weight, low encephalon weight and smaller stature in group C with respect to groups A and B hamsters (p<0,000). ∼2 statistical significance in relation to the presence of histopathological alterations in group C was also obtained (p<0,000). We observed greater relative risk of encephalic alterations in group C. Conclusions The administration of thimerosal in doses equivalent to vaccines content was associated with low corporal weight, low encephalon weight and smaller stature in postnatal hamsters. Neurotoxic effects were also produced at encephalic level, at hippocampus (regions CA1, CA3, DG), cerebral cortex and cerebellum (Purkinje cells and granuloses cells) with decrease in neuronal density, neuronal necrosis, axonal dismyelinization and gliosis. In addition, risk increase in developing any of these alterations was high in the animal group receiving thimerosal. http://www.scielo.org.pe/scielo.php?pid=S1025-55832007000300003&script=sci_abstract&tlng=en “The administration of thimerosal in doses equivalent to vaccines content was associated with low corporal weight, low encephalon weight and smaller stature in postnatal hamsters. Neurotoxic effects were also produced at encephalic level, at hippocampus (regions CA1, CA3, DG), cerebral cortex and cerebellum (Purkinje cells and granuloses cells) with decrease in neuronal density, neuronal necrosis, axonal dismyelinization and gliosis. In addition, risk increase in developing any of these alterations was high in the animal group receiving thimerosal.” Pediatrics • February 2008 Mercury levels in newborns and infants after receipt of thimerosal-containing vaccines Author information Pichichero ME1, Gentile A, Giglio N, Umido V, Clarkson T, Cernichiari E, Zareba G, Gotelli C, Gotelli M, Yan L, Treanor J. Department of Microbiology/Immunology, Pediatrics and Medicine University of Rochester, Rochester, New York 14642, USA michael_pichichero@urmc.rochester.edu Abstract OBJECTIVES Thimerosal is a mercurial preservative that was widely used in multidose vaccine vials in the United States and Europe until 2001 and continues to be used in many countries throughout the world. We conducted a pharmacokinetic study to assess blood levels and elimination of ethyl mercury after vaccination of infants with thimerosal-containing vaccines. METHODS Blood, stool, and urine samples were obtained before vaccination and 12 hours to 30 days after vaccination from 216 healthy children: 72 newborns (group 1), 72 infants aged 2 months (group 2), and 72 infants aged 6 months (group 3). Total mercury levels were measured by atomic absorption. Blood mercury pharmacokinetics were calculated by pooling the data on the group and were based on a 1-compartment first-order pharmacokinetics model. RESULTS For groups 1, 2, and 3, respectively, (1) mean +/- SD weights were 3.4 +/- 0.4, 5.1 +/- 0.6, and 7.7 +/- 1.1 kg; (2) maximal mean +/- SD blood mercury levels were 5.0 +/- 1.3, 3.6 +/1.5, and 2.8 +/- 0.9 ng/mL occurring at 0.5 to 1 day after vaccination; (3) maximal mean +/- SD stool mercury levels were 19.1 +/- 11.8, 37.0 +/- 27.4, and 44.3 +/- 23.9 ng/g occurring on day 5 after vaccination for all groups; and (4) urine mercury levels were mostly nondetectable. The blood mercury half-life was calculated to be 3.7 days and returned to prevaccination levels by day 30. CONCLUSIONS The blood half-life of intramuscular ethyl mercury from thimerosal in vaccines in infants is substantially shorter than that of oral methyl mercury in adults. Increased mercury levels were detected in stools after vaccination, suggesting that the gastrointestinal tract is involved in ethyl mercury elimination. Because of the differing pharmacokinetics of ethyl and methyl mercury, exposure guidelines based on oral methyl mercury in adults may not be accurate for risk assessments in children who receive thimerosal-containing vaccines. http://www.ncbi.nlm.nih.gov/pubmed/?term=18245396 “Because of the differing pharmacokinetics of ethyl and methyl mercury, exposure guidelines based on oral methyl mercury in adults may not be accurate for risk assessments in children who receive thimerosal-containing vaccines.” Chemical Research In Toxicology • February 2008 Thiol-modulated mechanisms of the cytotoxicity of thimerosal and inhibition of DNA topoisomerase II alpha Author information Wu X1, Liang H, O’Hara KA, Yalowich JC, Hasinoff BB. Faculty of Pharmacy University of Manitoba 50 Sifton Road, Winnipeg Manitoba, R3T 2N2, Canada Abstract Thimerosal is an organic mercury compound that is widely used as a preservative in vaccines and other solution formulations. The use of thimerosal has caused concern about its ability to cause neurological abnormalities due to mercury accumulation during a normal schedule of childhood vaccinations. While the chemistry and the biological effects of methylmercury have been well-studied, those of thimerosal have not. Thimerosal reacted rapidly with cysteine, GSH, human serum albumin, and single-stranded DNA to form ethylmercury adducts that were detectable by mass spectrometry. These results indicated that thimerosal would be quickly metabolized in vivo because of its reactions with protein and nonprotein thiols. Thimerosal also potently inhibited the decatenation activity of DNA topoisomerase II alpha, likely through reaction with critical free cysteine thiol groups. Thimerosal, however, did not act as a topoisomerase II poison and the lack of cross-resistance with a K562 cell line with a decreased level of topoisomerase II alpha (K/VP.5 cells) suggested that inhibition of topoisomerase II alpha was not a significant mechanism for the inhibition of cell growth. Depletion of intracellular GSH with buthionine sulfoximine treatment greatly increased the K562 cell growth inhibitory effects of thimerosal, which showed that intracellular glutathione had a major role in protecting cells from thimerosal. Pretreatment of thimerosal with glutathione did not, however, change its K562 cell growth inhibitory effects, a result consistent with the rapid exchange of the ethylmercury adduct among various thiol-containing cellular reactants. Thimerosal-induced single and double strand breaks in K562 cells were consistent with a rapid induction of apoptosis. In conclusion, these studies have elucidated some of the chemistry and biological activities of the interaction of thimerosal with topoisomerase II alpha and protein and nonprotein thiols and with DNA. http://www.ncbi.nlm.nih.gov/pubmed/18197631 “Thimerosal-induced single and double strand breaks in K562 cells were consistent with a rapid induction of apoptosis. In conclusion, these studies have elucidated some of the chemistry and biological activities of the interaction of thimerosal with topoisomerase II alpha and protein and nonprotein thiols and with DNA.” “This study associates Thimerosal-containing Rho(D) immune globulins exposure with some Neurodevelopmental Disorders in children.” Neuro Endocrinology Letters • April 2008 Neurodevelopmental disorders, maternal Rh-negativity, and Rho(D) immune globulins: a multi-center assessment Author information Geier DA1, Mumper E, Gladfelter B, Coleman L, Geier MR. The Institute of Chronic Illnesses, Inc., Silver Spring, MD 20905, USA Abstract BACKGROUND Many formulations of Thimerosal (49.55% mercury by weight)-containing Rho(D) immune globulins (TCRs) were routinely administered to Rh-negative mothers in the US prior to 2002. OBJECTIVES It was hypothesized: (1) if prenatal Rho(D)-immune globulin preparation exposure was a risk factor for neurodevelopmental disorders (NDs) then more children with NDs would have Rh-negative mothers compared to controls; and (2) if Thimerosal in the Rho(D)-immune globulin preparations was the ingredient associated with NDs, following the removal of Thimerosal from all manufactured Rho(D)-immune globulin preparations from 2002 in the US the frequency of maternal Rh-negativity among children with NDs should be similar to control populations. METHODS Maternal Rh-negativity was assessed at two sites (Clinic A-Lynchburg, VA; Clinic B-Rockville and Baltimore, MD) among 298 Caucasian children with NDs and known Rh-status. As controls, maternal Rh-negativity frequency was determined from 124 Caucasian children (born 1987-2001) without NDs at Clinic A, and the Rh-negativity frequency was determined from 1,021 Caucasian pregnant mothers that presented for prenatal genetic care at Clinic B (1980-1989). Additionally, 22 Caucasian patients with NDs born from 2002 onwards (Clinics A and B) were assessed for maternal Rh-negativity. RESULTS There were significant and comparable increases in maternal Rh-negativity among children with NDs (Clinic: A=24.2%), autism spectrum disorders (Clinic: A=28.3%, B=25.3%), and attention-deficit-disorder/attention-deficit-hyperactivity-disorder (Clinic: A=26.3%) observed at both clinics in comparison to both control groups (Clinic: A=12.1%, B=13.9%) employed. Children with NDs born post-2001 had a maternal Rh-negativity frequency (13.6%) similar to controls. CONCLUSION This study associates TCR exposure with some NDs in children. http://www.ncbi.nlm.nih.gov/pubmed/18404135 Journal Of Neurological Science • August 2008 Thimerosal exposure in infants and neurodevelopmental disorders: an assessment of computerized medical records in the Vaccine Safety Datalink Author information Young HA1, Geier DA, Geier MR. The George Washington University School of Public Health and Health Services Department of Epidemiology and Biostatistics, United States Abstract The study evaluated possible associations between neurodevelopmental disorders (NDs) and exposure to mercury (Hg) from Thimerosal-containing vaccines (TCVs) by examining the automated Vaccine Safety Datalink (VSD). A total of 278,624 subjects were identified in birth cohorts from 1990-1996 that had received their first oral polio vaccination by 3 months of age in the VSD. The birth cohort prevalence rate of medically diagnosed International Classification of Disease, 9th revision (ICD-9) specific NDs and control outcomes were calculated. Exposures to Hg from TCVs were calculated by birth cohort for specific exposure windows from birth-7 months and birth-13 months of age. Poisson regression analysis was used to model the association between the prevalence of outcomes and Hg doses from TCVs. Consistent significantly increased rate ratios were observed for autism, autism spectrum disorders, tics, attention deficit disorder, and emotional disturbances with Hg exposure from TCVs. By contrast, none of the control outcomes had significantly increased rate ratios with Hg exposure from TCVs. Routine childhood vaccination should be continued to help reduce the morbidity and mortality associated with infectious diseases, but efforts should be undertaken to remove Hg from vaccines. Additional studies should be conducted to further evaluate the relationship between Hg exposure and NDs. http://www.ncbi.nlm.nih.gov/pubmed/18482737 “Consistent significantly increased rate ratios were observed for autism, autism spectrum disorders, tics, attention deficit disorder, and emotional disturbances with ethyl mercury exposure from thimerosal containing vaccines.” Indian Journal Of Medical Research • October 2008 A comprehensive review of mercury provoked autism Author information Geier DA1, King PG, Sykes LK, Geier MR. The Institute of Chronic Illnesses, Silver Spring, MD, USA mgeier@comcast.net Abstract Emerging evidence supports the theory that some autism spectrum disorders (ASDs) may result from a combination of genetic/biochemical susceptibility, specifically a reduced ability to excrete mercury (Hg), and exposure to Hg at critical developmental periods. Elemental/inorganic Hg is released into the air/water where it becomes methylated and accumulates in animal tissues. The US population is primarily exposed to methyl-Hg by fish consumption. In addition, many pharmaceuticals have been, and some continue to be, a ubiquitous source of danger because they contain mercurials. Mercurials may be found in drugs for the eye, ear, nose, throat, and skin; in bleaching creams; as preservatives in cosmetics, tooth pastes, lens solutions, vaccines, allergy test and immunotherapy solutions; in antiseptics, disinfectants, and contraceptives; in fungicides and herbicides; in dental fillings and thermometers; and many other products. Hg has been found to cause immune, sensory, neurological, motor, and behavioural dysfunctions similar to traits defining/associated with ASDs, and that these similarities extend to neuroanatomy, neurotransmitters, and biochemistry. Furthermore, a review of molecular mechanisms indicates that Hg exposure can induce death, disorganization and/or damage to selected neurons in the brain similar to that seen in recent ASD brain pathology studies, and this alteration may likely produce the symptoms by which ASDs are diagnosed. Finally, a review of treatments suggests that ASD patients who undergo protocols to reduce Hg and/or its effects show significant clinical improvements in some cases. In conclusion, the overwhelming preponderance of the evidence favours acceptance that Hg exposure is capable of causing some ASDs. http://www.ncbi.nlm.nih.gov/pubmed/19106436 “In conclusion, the overwhelming preponderance of the evidence favours acceptance that ethyl mercury exposure is capable of causing some Autistic Spectrum Disorders.” Alternative Therapies In Health And Medicine • November 2008 A possible central mechanism in autism spectrum disorders, part 1 Author information Blaylock RL. Belhaven College Jackson, Mississippi, USA Abstract The autism spectrum disorders (ASD) are a group of related neurodevelopmental disorders that have been increasing in incidence since the 1980s. Despite a considerable amount of data being collected from cases, a central mechanism has not been offered. A careful review of ASD cases discloses a number of events that adhere to an immunoexcitotoxic mechanism. This mechanism explains the link between excessive vaccination, use of aluminum and ethylmercury as vaccine adjuvants, food allergies, gut dysbiosis, and abnormal formation of the developing brain. It has now been shown that chronic microglial activation is present in autistic brains from age 5 years to age 44 years. A considerable amount of evidence, both experimental and clinical, indicates that repeated microglial activation can initiate priming of the microglia and that subsequent stimulation can produce an exaggerated microglial response that can be prolonged. It is also known that one phenotypic form of microglia activation can result in an outpouring of neurotoxic levels of the excitotoxins, glutamate and quinolinic acid. Studies have shown that careful control of brain glutamate levels is essential to brain pathway development and that excesses can result in arrest of neural migration, as well as dendritic and synaptic loss. It has also been shown that certain cytokines, such as TNF-alpha, can, via its receptor, interact with glutamate receptors to enhance the neurotoxic reaction. To describe this interaction I have coined the term immunoexcitotoxicity, which is described in this article. http://www.ncbi.nlm.nih.gov/pubmed/?term=19043938 “This mechanism explains the link between excessive vaccination, use of aluminum and ethylmercury as vaccine adjuvants, food allergies, gut dysbiosis, and abnormal formation of the developing brain.” Current Medicinal Chemistry • December 2008 Kawasaki’s disease, acrodynia, and mercury Author information Mutter J1, Yeter D. Department of Environmental and Complementary Medicine Salusmed Medical Center, Wieslistrasse 34, CH - 8267 Berlingen, Switzerland jo.mutter@web.de Abstract A superantigen or autoimmunity has been hypothesized to be the main cause of the Kawasaki’s Disease but the etiology is unknown. Medical literature, epidemiological findings, and some case reports have suggested that mercury may play a pathogenic role. Several patients with Kawasaki’s Disease have presented with elevated urine mercury levels compared to matched controls. Most symptoms and diagnostic criteria which are seen in children with acrodynia, known to be caused by mercury, are similar to those seen in Kawasaki’s Disease. Genetic depletion of glutathione S-transferase , a susceptibility marker for Kawasaki’s Disease, is known to be also a risk factor for acrodynia and may also increase susceptibility to mercury. Coinciding with the largest increase (1985-1990) of thimerosal (49.6% ethyl mercury) in vaccines, routinely given to infants in the U.S. by 6 months of age (from 75microg to 187.5microg), the rates of Kawasaki’s Disease increased ten times, and, later (1985-1997), by 20 times. Since 1990 88 cases of patients developing Kawasaki’s Disease some days after vaccination have been reported to the Centers of Disease Control (CDC) including 19% manifesting symptoms the same day. The presented pathogenetic model may lead to new preventive- and therapeutic strategies for Kawasaki’s disease. http://www.ncbi.nlm.nih.gov/pubmed/19075648 “Coinciding with the largest increase (1985-1990) of thimerosal in vaccines, routinely given to infants in the U.S. by 6 months of age (from 75microg to 187.5microg), the rates of Kawasaki’s Disease increased ten times, and, later (1985-1997), by 20 times. Since 1990 eighty-eight cases of patients developing Kawasaki’s Disease some days after vaccination have been reported to the Centers of Disease Control (CDC) including 19% manifesting symptoms the same day.” Journal Of Toxicology And Environmental Health Part A • 2008 An investigation of porphyrinuria in Australian children with autism Author information Austin DW1, Shandley K. Swinburne Autism Bio-Research Initiative (SABRI) Faculty of Life and Social Sciences, Swinburne University of Technology Melbourne, Australia daustin@swin.edu.au Abstract Two recent studies, from France (Nataf et al., 2006) and the United States (Geier & Geier, 2007), identified atypical urinary porphyrin profiles in children with an autism spectrum disorder (ASD). These profiles serve as an indirect measure of environmental toxicity generally, and mercury (Hg) toxicity specifically, with the latter being a variable proposed as a causal mechanism of ASD (Bernard et al., 2001; Mutter et al., 2005). To examine whether this phenomenon occurred in a sample of Australian children with ASD, an analysis of urinary porphyrin profiles was conducted. A consistent trend in abnormal porphyrin levels was evidenced when data was compared with those previously reported in the literature. The results are suggestive of environmental toxic exposure impairing heme synthesis. Three independent studies from three continents have now demonstrated that porphyrinuria is concomitant with ASD, and that Hg may be a likely xenobiotic to produce porphyrin profiles of this nature. http://www.ncbi.nlm.nih.gov/pubmed/18704827 “These profiles serve as an indirect measure of environmental toxicity generally, and mercury toxicity specifically, with the latter being a variable proposed as a causal mechanism of Autistic Spectrum Disorder (Bernard et al., 2001; Mutter et al., 2005).” “... present observations are compatible with increased oxidative stress and a decreased detoxification capacity, particularly of mercury, in patients diagnosed with Autistic Spectrum Disorders.” Neurochemical Research • February 2009 A prospective study of transsulfuration biomarkers in autistic disorders Author information Geier DA1, Kern JK, Garver CR, Adams JB, Audhya T, Geier MR. Institute of Chronic Illnesses, Inc., Silver Spring, MD, USA Abstract The goal of this study was to evaluate transsulfuration metabolites in participants diagnosed with autism spectrum disorders (ASDs). Transsulfuration metabolites, including: plasma reduced glutathione (GSH), plasma oxidized glutathione (GSSG), plasma cysteine, plasma taurine, plasma sulfate, and plasma free sulfate among participants diagnosed with ASDs (n = 38) in comparison to age-matched neurotypical controls were prospectively evaluated. Testing was conducted using Vitamin Diagnostics, Inc. (CLIA-approved). Participants diagnosed with ASDs had significantly (P < 0.001) decreased plasma reduced GSH, plasma cysteine, plasma taurine, plasma sulfate, and plasma free sulfate relative to controls. By contrast, participants diagnosed with ASDs had significantly (P < 0.001) increased plasma GSSG relative to controls. The present observations are compatible with increased oxidative stress and a decreased detoxification capacity, particularly of mercury, in patients diagnosed with ASDs. Patients diagnosed with ASDs should be routinely tested to evaluate transsulfuration metabolites, and potential treatment protocols should be evaluated to potentially correct the transsulfuration abnormalities observed. http://www.ncbi.nlm.nih.gov/pubmed/18612812 Experimental And Toxicological Pathology • March 2009 Gender-selective toxicity of thimerosal Author information “Thus, our studies, although not directly Branch DR addressing the controversy surrounding Departments of Medicine and Laboratory Medicine and Pathobiology University of Toronto, Ontario, Canada don.branch@utoronto.ca Abstract A recent report shows a correlation of the historical use of thimerosal in therapeutic immunizations with the subsequent development of autism; however, this association remains controversial. Autism occurs approximately four times more frequently in males compared to females; thus, studies of thimerosal toxicity should take into consideration gender-selective effects. The present study was originally undertaken to determine the maximum tolerated dose (MTD) of thimersosal in male and female CD1 mice. However, during the limited MTD studies, it became apparent that thimerosal has a differential MTD that depends on whether the mouse is male or female. At doses of 38.4-76.8mg/kg using 10% DMSO as diluent, seven of seven male mice compared to zero of seven female mice tested succumbed to thimerosal. Although the thimerosal levels used were very high, as we were originally only trying to determine MTD, it was completely unexpected to observe a difference of the MTD between male and female mice. Thus, our studies, although not directly addressing the controversy surrounding thimerosal and autism, and still preliminary due to small numbers of mice examined, provide, nevertheless, the first report of gender-selective toxicity of thimerosal and indicate that any future studies of thimerosal toxicity should take into consideration gender-specific differences. http://www.ncbi.nlm.nih.gov/pubmed/18771903 thimerosal and autism, and still preliminary due to small numbers of mice examined, provide, nevertheless, the first report of gender-selective toxicity of thimerosal and indicate that any future studies of thimerosal toxicity should take into consideration gender-specific differences.” [autism occurs at a 4-1 ratio for boys to girls. Four boys to every one girl are damaged with autism] Health Place • March 2009 Proximity to point sources of environmental mercury release as a predictor of autism prevalence Author information Palmer RF1, Blanchard S, Wood R. University of Texas Health Science Center San Antonio Department of Family and Community Medicine 7703 Floyd Curl Drive, San Antonio Texas Mail Code 7794, TX 78229-3900, USA palmerr@uthscsa.edu Abstract The objective of this study was to determine if proximity to sources of mercury pollution in 1998 were related to autism prevalence in 2002. Autism count data from the Texas Educational Agency and environmental mercury release data from the Environmental Protection Agency were used. We found that for every 1000 pounds of industrial release, there was a corresponding 2.6% increase in autism rates (p<.05) and a 3.7% increase associated with power plant emissions(P<.05). Distances to these sources were independent predictors after adjustment for relevant covariates. For every 10 miles from industrial or power plant sources, there was an associated decreased autism Incident Risk of 2.0% and 1.4%, respectively (p<.05). While design limitations preclude interpretation of individual risk, further investigations of environmental risks to child development issues are warranted. http://www.ncbi.nlm.nih.gov/pubmed/18353703 “We found that for every 1000 pounds of industrial release, there was a corresponding 2.6% increase in autism rates (p<.05) and a 3.7% increase associated with power plant emissions(P<.05). For every 10 miles from industrial or power plant sources, there was an associated decreased autism Incident Risk of 2.0% and 1.4%, respectively (p<.05).” Journal Of Neurological Science • May 2009 Biomarkers of environmental toxicity and susceptibility in autism Author information Geier DA1, Kern JK, Garver CR, Adams JB, Audhya T, Nataf R, Geier MR. Institute of Chronic Illnesses, Inc., Silver Spring, Maryland, USA Abstract Autism spectrum disorders (ASDs) may result from a combination of genetic/biochemical susceptibilities in the form of a reduced ability to excrete mercury and/or increased environmental exposure at key developmental times. Urinary porphyrins and transsulfuration metabolites in participants diagnosed with an ASD were examined. A prospective, blinded study was undertaken to evaluate a cohort of 28 participants with an ASD diagnosis for Childhood Autism Rating Scale (CARS) scores, urinary porphyrins, and transsulfuration metabolites. Testing was conducted using Vitamin Diagnostics, Inc. (CLIA-approved) and Laboratoire Philippe Auguste (ISO-approved). Participants with severe ASDs had significantly increased mercury intoxication-associated urinary porphyrins (pentacarboxyporphyrin, precoproporphyrin, and coproporphyrin) in comparison to participants with mild ASDs, whereas other urinary porphyrins were similar in both groups. Significantly decreased plasma levels of reduced glutathione (GSH), cysteine, and sulfate were observed among study participants relative to controls. In contrast, study participants had significantly increased plasma oxidized glutathione (GSSG) relative to controls. Mercury intoxication-associated urinary porphyrins were significantly correlated with increasing CARS scores and GSSG levels, whereas other urinary porphyrins did not show these relationships. The urinary porphyrin and CARS score correlations observed among study participants suggest that mercury intoxication is significantly associated with autistic symptoms. The transsulfuration abnormalities observed among study participants indicate that mercury intoxication was associated with increased oxidative stress and decreased detoxification capacity. http://www.ncbi.nlm.nih.gov/pubmed/18817931 “The urinary porphyrin and CARS score correlations observed among study participants suggest that mercury intoxication is significantly associated with autistic symptoms.” Toxicology And Environmental Chemistry • June 2009 Mitochondrial dysfunction, impaired oxidative-reduction activity, degeneration, and death in human neuronal and fetal cells induced by low-level exposure to thimerosal and other metal compounds Author information Geier DA1, King PG2, Geier MR3. 1. Institute of Chronic Illnesses, Inc., Silver Spring, Maryland, USA 2. CoMeD, Inc., Silver Spring, Maryland, USA 3. The Genetic Centers of America, Silver Spring, Maryland, USA Abstract Thimerosal (ethylmercurithiosalicylic acid), an ethylmercury (EtHg)-releasing compound (49.55% mercury (Hg)), was used in a range of medical products for more than 70 years. Of particular recent concern, routine administering of Thimerosal-containing biologics/childhood vaccines have become significant sources of Hg exposure for some fetuses/infants. This study was undertaken to investigate cellular damage among in vitro human neuronal (SH-SY-5Y neuroblastoma and 1321N1 astrocytoma) and fetal (nontransformed) model systems using cell vitality assays and microscope-based digital image capture techniques to assess potential damage induced by Thimerosal and other metal compounds (aluminum (Al) sulfate, lead (Pb)(II) acetate, methylmercury (MeHg) hydroxide, and mercury (Hg)(II) chloride) where the cation was reported to exert adverse effects on developing cells. Thimerosal-associated cellular damage was also evaluated for similarity to pathophysiological findings observed in patients diagnosed with autistic disorders (ADs). Thimerosal-induced cellular damage as evidenced by concentration- and time-dependent mitochondrial damage, reduced oxidative-reduction activity, cellular degeneration, and cell death in the in vitro human neuronal and fetal model systems studied. Thimerosal at low nanomolar (nM) concentrations induced significant cellular toxicity in human neuronal and fetal cells. Thimerosal-induced cytoxicity is similar to that observed in AD pathophysiologic studies. Thimerosal was found to be significantly more toxic than the other metal compounds examined. Future studies need to be conducted to evaluate additional mechanisms underlying Thimerosal-induced cellular damage and assess potential co-exposures to other compounds that may increase or decrease Thimerosal-mediated toxicity. Full Report: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3924342/ “Thimerosal at low nanomolar concentrations induced significant cellular toxicity in human neuronal and fetal cells. Thimerosal-induced cytoxicity is similar to that observed in Autistic Disorder pathophysiologic studies. Thimerosal was found to be significantly more toxic than the other metal compounds examined.” American Journal Of Perinatology • August 2009 Neonate exposure to thimerosal mercury from hepatitis B vaccines Author information Dórea JG1, Marques RC, Brandão KG. Universidade de Brasília, DF, Brazil dorea@rudah.com.br Abstract Infant exposure to ethylmercury (EtHg) has not only increased but is starting earlier as a result of the current immunization schedule that uses thimerosal-containing vaccines (TCVs). Although vaccination schedule varies considerably between countries, infants in less-developed countries continue to be exposed to EtHg derived from more affordable TCVs. We studied the exposure of newborns to EtHg from hepatitis B vaccines; hospital records (21,685) were summarized for the years 2001 to 2005 regarding date of birth, vaccination date, and birth weight. Most of the vaccinations occurred in the first 24 hours postdelivery; over the 5 years, there was an increase in vaccinations within hours of birth (same day), from 7.4% (2001) to 87.8% (2005). Nearly 94.6% of infants are now being vaccinated within the first 24 hours. Range of mercury exposure spread from 4.2 to 21.1 microg mercury/kg body weight for those receiving TCVs with the highest thimerosal concentration; these exposure levels are conservative for 2% of children receiving vaccines within 2 to 3 postnatal days, when they are still going through physiological postnatal weight loss. Because of the particular timing (transitioning from in utero to ex utero metabolism) and specific aspects of exposure (i.e., parenteral mode, bypassing gastroenteric barriers) and dose (related to vaccine manufacturer and with variation in birth weight), this study reveals critical issues that can modulate toxicokinetics and toxicodynamics of organomercurials in neonates. http://www.ncbi.nlm.nih.gov/pubmed/?term=19283656 “Infant exposure to ethylmercury (EtHg) has not only increased but is starting earlier as a result of the current immunization schedule that uses thimerosal-containing vaccines (TCVs) ... this study reveals critical issues that can modulate toxicokinetics and toxicodynamics of organomercurials in neonates.” Toxicology In Vitro • September 2009 Increase in intracellular Zn2+ concentration by thimerosal in rat thymocytes: intracellular Zn2+ release induced by oxidative stress Author information Hashimoto E1, Oyama TB, Oyama K, Nishimura Y, Oyama TM, Ueha-Ishibashi T, Okano Y, Oyama Y. Laboratory of Cellular Signaling Faculty of Integrated Arts and Sciences The University of Tokushima Tokushima 770-8502, Japan Abstract Thimerosal (TMR), an ethylmercury-containing preservative in pharmaceutical products, was recently reported to increase intracellular Zn(2+) concentration. Therefore, some health concerns about the toxicity of TMR remain because of physiological and pathological roles of Zn(2+). To reveal the property of TMR-induced increase in intracellular Zn(2+) concentration, the effect of TMR on FluoZin-3 fluorescence, an indicator of intracellular Zn(2+), of rat thymocytes was examined. TMR at concentrations ranging from 0.3 microM to 10 microM increased the intensity of FluoZin-3 fluorescence in a concentration-dependent manner under external Ca(2+)- and Zn(2+)-free condition. The threshold concentration was 0.3-1 microM. The increase in the intensity was significant when TMR concentration was 1 microM or more. N,N,N’,N’-Tetrakis(2pyridylmethyl)ethylenediamine (TPEN), a chelator for intracellular Zn(2+), completely attenuated the TMR-induced augmentation of FluoZin-3 fluorescence. Hydrogen peroxide (H(2)O(2)) and N-ethylmaleimide, reducing cellular thiol content, significantly increased FluoZin-3 fluorescence intensity and decreased 5-chloromethylfluorescein (5-CMF) fluorescence intensity, an indicator for cellular thiol. The correlation coefficient between TMR-induced augmentation of FluoZin-3 fluorescence and attenuation of 5-CMF fluorescence was -0.882. TMR also attenuated the 5-CMF fluorescence in the presence of TPEN. Simultaneous application of H(2)O(2) and TMR synergistically augmented the FluoZin-3 fluorescence. It is suggested that TMR increases intracellular Zn(2+) concentration via decreasing cellular thiol content. http://www.ncbi.nlm.nih.gov/pubmed/?term=19497362 “It is suggested that Thimerosal increases intracellular Zn(2+) concentration via decreasing cellular thiol content.” Biometals • December 2009 Assessment of chronic mercury exposure within the U.S. population, National Health and Nutrition Examination Survey 1999–2006 Author information Laks DR. Mental Retardation Research Center David Geffen School of Medicine at UCLA 635 Charles E. Young Dr. South Neuroscience Research Bldg., Room 379 (lab) Los Angeles, CA 90095-7332, USA dlaks@mednet.ucla.edu Abstract The purpose of this study was to assess chronic mercury exposure within the US population. Time trends were analyzed for blood inorganic mercury (I-Hg) levels in 6,174 women, ages 18-49, in the NHANES, 1999-2006 data sets. Multivariate logistic regression distinguished a significant, direct correlation within the US population between I-Hg detection and years since the start of the survey (OR = 1.49, P < 0.001). Within this population, I-Hg detection rose sharply from 2% in 1999-2000 to 30% in 2005-2006. In addition, the population averaged mean I-Hg concentration rose significantly over that same period from 0.33 to 0.39 μ/L (Anova, P < 0.001). In a separate analysis, multivariate logistic regression indicated that I-Hg detection was significantly associated with age (OR = 1.02, P < 0.001). Furthermore, multivariate logistic regression revealed significant associations of both I-Hg detection and mean concentration with biomarkers for the main targets of mercury deposition and effect: the liver, immune system, and pituitary. This study provides compelling evidence that I-Hg deposition within the human body is a cumulative process, increasing with age and in the population over time, since 1999, as a result of chronic mercury exposure. Furthermore, our results indicate that I-Hg deposition is associated with the significant biological markers for main targets of exposure, deposition, and effect. Accumulation of focal I-Hg deposits within the human body due to chronic mercury exposure provides a mechanism which suggests a time dependent rise in the population risks for associated disease. http://www.ncbi.nlm.nih.gov/pubmed/?term=19697139 “Within this population, inorganic mercury detection rose sharply from 2% in 1999-2000 to 30% in 2005-2006. In addition, the population averaged mean inorganic mercury concentration rose significantly over that same period from 0.33 to 0.39 μ/L (Anova, P < 0.001).” “... thimerosal administration to suckling or adult rats impairs sensitivity to pain ...” Brain Research • December 2009 Neonatal administration of a vaccine preservative, thimerosal, produces lasting impairment of nociception and apparent activation of opioid system in rats Author information Olczak M1, Duszczyk M, Mierzejewski P, Majewska MD. Department of Pharmacology and Physiology of the Nervous System Institute of Psychiatry and Neurology Warsaw, Poland Abstract Thimerosal (THIM), an organomercury preservative added to many child vaccines is a suspected factor in pathogenesis of neurodevelopmental disorders. We examined the pharmacokinetics of Hg in the brain, liver and kidneys after i.m. THIM injection in suckling rats and we tested THIM effect on nociception. THIM solutions were injected to Wistar and Lewis rats in a vaccination-like mode on PN days 7, 9, 11 and 15 in four equal doses. For Wistar rats these were: 12, 48, 240, 720, 1440, 2160, 3000 microg Hg/kg and for Lewis: 54, 216, 540 and 1080 microg Hg/kg. Pharmacokinetic analysis revealed that Hg from THIM injections accumulates in the rat brain in significant amounts and remains there longer than 30 days after the injection. At the 6th week of age animals were examined for pain sensitivity using the hot plate test. THIM treated rats of both strains and sexes manifested statistically significantly elevated pain threshold (latency for paw licking, jumping) on a hot plate (56 degrees C). Wistar rats were more sensitive to this effect than Lewis rats. Protracted THIM-induced hypoalgesia was reversed by naloxone (5 mg/kg, i.p.) injected before the hot plate test, indicative of involvement of endogenous opioids. This was confirmed by augmented catalepsy after morphine (2.5 mg/kg, s.c.) injection. Acute THIM injection to 6-week-old rats also produced hypoalgesia, but this effect was transient and was gone within 14 days. Present findings show that THIM administration to suckling or adult rats impairs sensitivity to pain, apparently due to activation the endogenous opioid system. http://www.ncbi.nlm.nih.gov/pubmed/19747466 Acta Neurobiologia Experimentalis • 2009 A prospective study of prenatal mercury exposure from maternal dental amalgams and autism severity Author information Geier DA1, Kern JK, Geier MR. Institute of Chronic Illnesses, Inc., Silver Spring, Maryland, USA Abstract Dental amalgams containing 50% mercury (Hg) have been used in dentistry for the last 150 years, and Hg exposure during key developmental periods was associated with autism spectrum disorders (ASDs). This study examined increased Hg exposure from maternal dental amalgams during pregnancy among 100 qualifying participants born between 1990-1999 and diagnosed with DSM-IV autism (severe) or ASD (mild). Logistic regression analysis (age, gender, race, and region of residency adjusted) by quintile of maternal dental amalgams during pregnancy revealed the ratio of autism:ASD (severe:mild) were about 1 (no effect) for < or =5 amalgams and increased for > or =6 amalgams. Subjects with > or =6 amalgams were 3.2-fold significantly more likely to be diagnosed with autism (severe) in comparison to ASD (mild) than subjects with < or =5 amalgams. Dental amalgam policies should consider Hg exposure in women before and during the child-bearing age and the possibility of subsequent fetal exposure and adverse outcomes. Full Report http://www.ncbi.nlm.nih.gov/pubmed/19593333 “Hg [ethyl mercury] exposure during key developmental periods was associated with autism spectrum disorders … Subjects with > or =6 amalgams were 3.2-fold significantly more likely to be diagnosed with autism (severe) in comparison to ASD (mild) than subjects with < or =5 amalgams.” “A significant correlation was observed between increasing cP levels and CARS scores.” Journal Of Toxicology And Environmental Health Part A • 2009 A prospective blinded evaluation of urinary porphyrins verses the clinical severity of autism spectrum disorders Author information Geier DA1, Kern JK, Geier MR. Institute of Chronic Illnesses, Inc., Silver Spring, Maryland, USA mgeier@comcast.net Abstract A prospective, blinded study evaluated the relationship between autism spectrum disorder (ASD) severity measured by Childhood Autism Rating Scale (CARS) scores and urinary porphyrins among a cohort of participants (n = 26). LabCorp (CLIA-approved) tested for uroporphyrins, heptacarboxylporphyrins, hexacarboxylporphyrins, pentacarboxylporphyrins, coproporphyrin (cP) I, and cP III levels. Participants with severe ASD had significantly increased cP I, cP III, and total cP levels in comparison to participants with mild ASD. A significant correlation was observed between increasing cP levels and CARS scores. Significant correlations were also noted for comparative urinary porphyrin testing between LabCorp and the Laboratoire Philippe Auguste (ISO-approved) for total cP. Finally, total cP measured at LabCorp was found to significantly correlate with precoproporphryin (a specific porphyrin marker for mercury toxicity) measured at the Laboratoire Philippe Auguste. Since urinary porphyrin testing is clinically available, relatively inexpensive, and noninvasive, it may be used to help suggest whether heavy metal toxicity is associated with ASD. http://www.ncbi.nlm.nih.gov/pubmed/20077233 Toxicology And Applied Pharmacology • March 2010 Mercury toxicokinetics dependency on strain and gender Author information Ekstrand J1, Nielsen JB, Havarinasab S, Zalups RK, Söderkvist P, Hultman P. Molecular and Immunological Pathology Department of Clinical and Experimental Medicine Linköping University, SE-58185 Linköping, Sweden Abstract Mercury (Hg) exposure from dental amalgam fillings and thimerosal in vaccines is not a major health hazard, but adverse health effects cannot be ruled out in a small and more susceptible part of the exposed population. Individual differences in toxicokinetics may explain susceptibility to mercury. Inbred, H-2-congenic A.SW and B10.S mice and their F1- and F2hybrids were given HgCl2 with 2.0 mg Hg/L drinking water and traces of (203)Hg. Whole-body retention (WBR) was monitored until steady state after 5 weeks, when the organ Hg content was assessed. Despite similar Hg intake, A.SW males attained a 20-30% significantly higher WBR and 2- to 5-fold higher total renal Hg retention/concentration than A.SW females and B10.S mice. A selective renal Hg accumulation but of lower magnitude was seen also in B10.S males compared with females. Differences in WBR and organ Hg accumulation are therefore regulated by non-H-2 genes and gender. Lymph nodes lacked the strain- and gender-dependent Hg accumulation profile of kidney, liver and spleen. After 15 days without Hg A.SW mice showed a 4-fold higher WBR and liver Hg concentration, but 11-fold higher renal Hg concentration, showing the key role for the kidneys in explaining the slower Hg elimination in A.SW mice. The trait causing higher mercury accumulation was not dominantly inherited in the F1 hybrids. F2 mice showed a large inter-individual variation in Hg accumulation, showing that multiple genetic factors influence the Hg toxicokinetics in the mouse. The genetically heterogeneous human population may therefore show a large variation in mercury toxicokinetics. http://www.ncbi.nlm.nih.gov/pubmed/19732784 “The genetically heterogeneous human population may therefore show a large variation in mercury toxicokinetics.” Journal Of Neuroinflammation • March 2010 Mercury induces inflammatory mediator release from human mast cells Author information Kempuraj D1, Asadi S, Zhang B, Manola A, Hogan J, Peterson E, Theoharides TC. Molecular Immunopharmacology and Drug Discovery Laboratory Department of Pharmacology and Experimental Therapeutics Tufts University School of Medicine and Tufts Medical Center Boston, MA 02111, USA Abstract BACKGROUND Mercury is known to be neurotoxic, but its effects on the immune system are less well known. Mast cells are involved in allergic reactions, but also in innate and acquired immunity, as well as in inflammation. Many patients with Autism Spectrum Disorders (ASD) have “allergic” symptoms; moreover, the prevalence of ASD in patients with mastocytosis, characterized by numerous hyperactive mast cells in most tissues, is 10-fold higher than the general population suggesting mast cell involvement. We, therefore, investigated the effect of mercuric chloride (HgCl2) on human mast cell activation. METHODS Human leukemic cultured LAD2 mast cells and normal human umbilical cord blood-derived cultured mast cells (hCBMCs) were stimulated by HgCl2 (0.1-10 microM) for either 10 min for beta-hexosaminidase release or 24 hr for measuring vascular endothelial growth factor (VEGF) and IL-6 release by ELISA. RESULTS HgCl2 induced a 2-fold increase in beta-hexosaminidase release, and also significant VEGF release at 0.1 and 1 microM (311 +/- 32 pg/106 cells and 443 +/- 143 pg/106 cells, respectively) from LAD2 mast cells compared to control cells (227 +/- 17 pg/106 cells, n = 5, p < 0.05). Addition of HgCl2 (0.1 microM) to the proinflammatory neuropeptide substance P (SP, 0.1 microM) had synergestic action in inducing VEGF from LAD2 mast cells. HgCl2 also stimulated significant VEGF release (360 +/- 100 pg/106 cells at 1 microM, n = 5, p < 0.05) from hCBMCs compared to control cells (182 +/- 57 pg/106 cells), and IL-6 release (466 +/- 57 pg/106 cells at 0.1 microM) compared to untreated cells (13 +/- 25 pg/106 cells, n = 5, p < 0.05). Addition of HgCl2 (0.1 microM) to SP (5 microM) further increased IL-6 release. CONCLUSIONS HgCl2 stimulates VEGF and IL-6 release from human mast cells. This phenomenon could disrupt the bloodbrain-barrier and permit brain inflammation. As a result, the findings of the present study provide a biological mechanism for how low levels of mercury may contribute to ASD pathogenesis. Full Report: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2850891/ “... the findings of the present study provide a biological mechanism for how low levels of mercury may contribute to Autistic Spectrum Disorder pathogenesis.” “... association between premature puberty and exposure to mercury from thimerosal-containing vaccines ...” Indian Journal Of Medical Research • April 2010 Thimerosal exposure & increasing trends of premature puberty in the vaccine safety datalink Author information Geier DA1, Young HA, Geier MR. The Institute of Chronic Illnesses, Inc., Silver Spring, MD 20905, USA mgeier@comcast.net Abstract BACKGROUND & OBJECTIVES The US Agency for Toxic Substances and Disease Registry (ATSDR) reports that mercury (Hg) is a known endocrine disruptor and it adversely affects the steroid synthesis pathway in animals and humans, and may interact to enhance the risk for a child developing premature puberty. An association between premature puberty and exposure to Hg from thimerosal-containing vaccines (TCVs) was evaluated in computerized medical records within the Vaccine Safety Datalink (VSD). METHODS A total of 278,624 subjects were identified in birth cohorts from 1990-1996. The birth cohort prevalence rates of medically diagnosed International Classification of Disease, 9(th) revision (ICD-9) premature puberty and control outcomes were calculated. Exposures to Hg from TCVs were calculated by birth cohort for specific exposure windows from birth-7 months and birth-13 months of age. Poisson regression analysis was used to model the association between the prevalence of outcomes and Hg doses from TCVs. RESULTS Significantly increased (P<0.0001) rate ratios were observed for premature puberty for a 100 microg difference in Hg exposure from TCVs in the birth-7 months (rate ratio=5.58) and birth-13 months (rate ratio=6.45) of age exposure windows. By contrast, none of the control outcomes had significantly increased rate ratios with Hg exposure from TCVs. INTERPRETATION & CONCLUSIONS Routine childhood vaccination should be continued to help reduce the morbidity and mortality associated with infectious diseases, but efforts should be undertaken to remove Hg from vaccines. Additional studies should be done to evaluate the relationship between Hg exposure and premature puberty. Full report available at this link: http://www.ncbi.nlm.nih.gov/pubmed/20424300 Indian Journal Of Medical Research • April 2010 Exposure to low-dose mercury (from thimerosal) & premature puberty - a new avenue for research with the vaccine safety datalink Author information Dórea JG. Universidade de Brasilia, Brasilia, DF. Brazil dorea@rudah.com.br Abstract The paper by Geier et al1 addresses the plausible association of premature puberty after a typical pattern of exposure to ethylmercury in thimerosal-containing vaccines (TCVs) taken by young children in the USA before TCVs were discontinued. Both precocious puberty and low-level mercury are per se high-profile topics of public health interest. Given that TCVs are still currently given to pregnant women, infants and young children around the world, the paper raises a unique opportunity for discussing the role of mercury- based preservatives. The study took advantage of the vaccine-safety datalink (VSD) system of the USA. Black et al2 summarized the advantage of the VSD over the former Vaccine Adverse Event Reporting System (VAERS) in use until 1991 in the USA. Until then, potential vaccine safety issues could only be evaluated by the passive data collected through the VAERS. The current VSD system links outcome and vaccine exposure information, demographic and other covariate information, from the automated clinical databases within several Health Maintenance Organizations (HMOs). As pointed out by Black et al2 this data bank can be utilized to screen for possible associations of events after vaccination and also, as in the case of Geier et al1, to evaluate hypotheses. Geier et al1 analyzed the data from 1990 to 1996 (n = 278,624) and explored a possible link of premature puberty to TCV received at young ages by comparing this outcome to outcomes not related to mercury exposure (controls). It is worth mentioning the disproportionate percentage of males (7%) in the sample. If encountered in future studies, this information confirms gender differences in thimerosal toxicity3. Constitutional differences in gender determine hormonal balance and represent a biologic variable4 to be considered in reproductive and neurologic outcomes. Premature sexual development is a topic of current interest because of social and attendant health- associated issues, especially for girls. Unwanted teenage pregnancy and sexually transmitted diseases are among the important social and biological issues affecting poor countries and disadvantaged segments of rich countries. Reports from different parts of the world indicate that precocious gynaecological-age is significantly associated with early sexual initiation5 and with teenage pregnancy6,7. Additionally, as reviewed by Karaolis-Danckert et al8, an accelerated age of puberty onset may influence the life-time risk for breast and testicular cancer, insulin resistance, and adiposity. It is becoming clear that environmental factors are strongly associated with precocious puberty9. Studies indicate that increasing rates of precocious puberty are among the endocrine-system related effects of endocrine-disruptor chemicals found in the environment10. Generally described as endocrine disruptors, there are a broad range of these substances capable of affecting the endocrine system. Some of these can act specifically on the reproductive system having estrogenic, anti-estrogenic, androgenic, and anti- androgenic activity. Besides that, these chemicals can also interfere with the hypthalamo-pituitary unit, and also disrupt estrous cyclicity. The endocrine-disrupting activity of these pollutants on developmental toxicology depends on timing and dosage. However, since these occur as mixtures, it is not yet possible to know if their end-point effects are additive or antagonistic. Therefore, this type of exposure is difficult to study because of the variety of possible outcomes10. A wide range of endocrine disruptors listed by Abaci et al18 include biocides (herbicides, fungicides, insecticides, nematocides), and industrial compounds made up of organic substances and metals (that includes mercury). Full report available at this link: http://www.ncbi.nlm.nih.gov/pubmed/20424297 Toxicology • August 2010 Sensitization effect of thimerosal is mediated in vitro via reactive oxygen species and calcium signaling Author information Migdal C1, Foggia L, Tailhardat M, Courtellemont P, Haftek M, Serres M. EA 41-69, Université Lyon 1, Pavillon R Hôpital Edouard Herriot 69437 Lyon Cedex 03, France Abstract Thimerosal, a mercury derivative composed of ethyl mercury chloride (EtHgCl) and thiosalicylic acid (TSA), is widely used as a preservative in vaccines and cosmetic products and causes cutaneous reactions. Since dendritic cells (DCs) play an essential role in the immune response, the sensitization potency of chemicals was studied in vitro using U937, a human promyelomonocytic cell line that is used as a surrogate of monocytic differentiation and activation. Currently, this cell line is under ECVAM (European Center for the Validation of Alternative Methods) validation as an alternative method for discriminating chemicals. Thimerosal and mercury derivatives induced in U937 an overexpression of CD86 and interleukin (IL)-8 secretion similarly to 1-chloro-2,4-dinitrobenzene (DNCB), a sensitizer used as a positive control for DC activation. Non-sensitizers, dichloronitrobenzene (DCNB), TSA and sodium dodecyl sulfate (SDS), an irritant, had no effect. U937 activation was prevented by cell pretreatment with N-acetyl-L-cysteine (NAC) but not with thiol-independent antioxidants except vitamin E which affected CD86 expression by preventing lipid peroxidation of cell membranes. Thimerosal, EtHgCl and DNCB induced glutathione (GSH) depletion and reactive oxygen species (ROS) within 15 min; another peak was detected after 2h for mercury compounds only. MitoSOX, a specific mitochondrial fluorescent probe, confirmed that ROS were essentially produced by mitochondria in correlation with its membrane depolarization. Changes in mitochondrial membrane permeability induced by mercury were reversed by NAC but not by thiol-independent antioxidants. Thimerosal and EtHgCl also induced a calcium (Ca2+) influx with a peak at 3h, suggesting that Ca2+ influx is a secondary event following ROS induction as Ca2+ influx was suppressed after pretreatment with NAC but not with thiol-independent antioxidants. Ca2+ influx was also suppressed when culture medium was deprived of Ca2+ confirming the specificity of the measure. In conclusion, these data suggest that thimerosal induced U937 activation via oxidative stress from mitochondrial stores and mitochondrial membrane depolarization with a primordial effect of thiol groups. A cross-talk between ROS and Ca2+ influx was demonstrated. http://www.ncbi.nlm.nih.gov/pubmed/20457211 “In conclusion, these data suggest that thimerosal induced U937 activation via oxidative stress from mitochondrial stores and mitochondrial membrane depolarization with a primordial effect of thiol groups. A cross-talk between ROS and Ca2+ in ux was demonstrated.” Environmental Health Perspectives • October 2010 Urinary porphyrin excretion in neurotypical and autistic children Author information Woods JS1, Armel SE, Fulton DI, Allen J, Wessels K, Simmonds PL, Granpeesheh D, Mumper E, Bradstreet JJ, Echeverria D, Heyer NJ, Rooney JP. Department of Environmental and Occupational Health Sciences University of Washington, Seattle, Washington 98105, USA jwoods@u.washington.edu Abstract BACKGROUND Increased urinary concentrations of pentacarboxyl-, precopro- and copro-porphyrins have been associated with prolonged mercury (Hg) exposure in adults, and comparable increases have been attributed to Hg exposure in children with autism (AU). “Increased urinary OBJECTIVES This study was designed to measure and compare urinary porphyrin concentrations in neurotypical (NT) children and same-age children with autism, and to examine the association between porphyrin levels and past or current Hg exposure in children with autism. pentacarboxyl-, precopro- METHODS This exploratory study enrolled 278 children 2-12 years of age. We evaluated three groups: AU, pervasive developmental disorder-not otherwise specified (PDD-NOS), and NT. Mothers/caregivers provided information at enrollment regarding medical, dental, and dietary exposures. Urine samples from all children were acquired for analyses of porphyrin, creatinine, and Hg. Differences between groups for mean porphyrin and Hg levels were evaluated. Logistic regression analysis was conducted to determine whether porphyrin levels were associated with increased risk of autism. have been associated with RESULTS Mean urinary porphyrin concentrations are naturally high in young children and decline by as much as 2.5-fold between 2 and 12 years of age. Elevated copro- (p < 0.009), hexacarboxyl- (p < 0.01) and pentacarboxyl- (p < 0.001) porphyrin concentrations were significantly associated with AU but not with PDD-NOS. No differences were found between NT and AU in urinary Hg levels or in past Hg exposure as determined by fish consumption, number of dental amalgam fillings, or vaccines received. CONCLUSIONS These findings identify disordered porphyrin metabolism as a salient characteristic of autism. Hg exposures were comparable between diagnostic groups, and a porphyrin pattern consistent with that seen in Hg-exposed adults was not apparent. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2957928/ concentrations of and copro-porphyrins prolonged mercury (Hg) exposure in adults, and comparable increases have been attributed to Hg exposure in children with autism.” “These data document that exposure to thimerosal during early postnatal life produces lasting alterations in the densities of brain opioid receptors along with other neuropathological changes, which may disturb brain development.” Neurochemistry Research • November 2010 Neonatal administration of thimerosal causes persistent changes in mu opioid receptors in the rat brain Author information Olczak M1, Duszczyk M, Mierzejewski P, Bobrowicz T, Majewska MD. Department of Pharmacology and Physiology of the Nervous System Institute of Psychiatry and Neurology, Warsaw, Poland Abstract Thimerosal added to some pediatric vaccines is suspected in pathogenesis of several neurodevelopmental disorders. Our previous study showed that thimerosal administered to suckling rats causes persistent, endogenous opioid-mediated hypoalgesia. Here we examined, using immunohistochemical staining technique, the density of μ-opioid receptors (MORs) in the brains of rats, which in the second postnatal week received four i.m. injections of thimerosal at doses 12, 240, 1,440 or 3,000 μg Hg/kg. The periaqueductal gray, caudate putamen and hippocampus were examined. Thimerosal administration caused dose-dependent statistically significant increase in MOR densities in the periaqueductal gray and caudate putamen, but decrease in the dentate gyrus, where it was accompanied by the presence of degenerating neurons and loss of synaptic vesicle marker (synaptophysin). These data document that exposure to thimerosal during early postnatal life produces lasting alterations in the densities of brain opioid receptors along with other neuropathological changes, which may disturb brain development. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2957583/ “our data demonstrated that the toxicokinetics of Thimerosal (ethyl mercury) is completely different from that of methyl mercury.” Archives of Toxicology • Inorganic Compounds • November 2010 Identification and distribution of mercury species in rat tissues following administration of thimerosal or methylmercury Jairo L. Rodrigues, Juliana M. Serpeloni, Bruno L. Batista, Samuel S. Souza, Fernando BarbosaJr Abstract Methylmercury (Met-Hg) is one the most toxic forms of Hg, with a considerable range of harmful effects on humans. Sodium ethyl mercury thiosalicylate, thimerosal (TM) is an ethylmercury (Et-Hg)-containing preservative that has been used in manufacturing vaccines in many countries. Whereas the behavior of Met-Hg in humans is relatively well known, that of ethylmercury (Et-Hg) is poorly understood. The present study describes the distribution of mercury as (-methyl, -ethyl and inorganic mercury) in rat tissues (brain, heart, kidney and liver) and blood following administration of TM or Met-Hg. Animals received one dose/day of Met-Hg or TM by gavage (0.5 mg Hg/kg). Blood samples were collected after 6, 12, 24, 48, 96 and 120 h of exposure. After 5 days, the animals were killed, and their tissues were collected. Total blood mercury (THg) levels were determined by ICP-MS, and methylmercury (Met-Hg), ethylmercury (Et-Hg) and inorganic mercury (Ino-Hg) levels were determined by speciation analysis with LC-ICP-MS. Mercury remains longer in the blood of rats treated with Met-Hg compared to that of TM-exposed rats. Moreover, after 48 h of the TM treatment, most of the Hg found in blood was inorganic. Of the total mercury found in the brain after TM exposure, 63% was in the form of Ino-Hg, with 13.5% as Et-Hg and 23.7% as Met-Hg. In general, mercury in tissues and blood following TM treatment was predominantly found as Ino-Hg, but a considerable amount of Et-Hg was also found in the liver and brain. Taken together, our data demonstrated that the toxicokinetics of TM is completely different from that of Met-Hg. Thus, Met-Hg is not an appropriate reference for assessing the risk from exposure to TM-derived Hg. It also adds new data for further studies in the evaluation of TM toxicity. http://link.springer.com/article/10.1007%2Fs00204-010-0538-4 Clinica Chimica Acta • November 2010 Making sense of epidemiological studies of young children exposed to thimerosal in vaccines Author information Dórea JG. C.P. 04322, Universidade de Brasilia 70919-970 Brasilia, DF, Brazil dorea@rudah.com.br Abstract OBJECTIVE: To compare epidemiological studies dealing with neurological issues (compatible with Hg toxicity) linked to exposing newborns and infants to intramuscular doses of preservative-Hg resulting from vaccination with thimerosal-containing vaccines (TCV). METHODS: Major databases were searched for studies that addressed neurodevelopment outcomes other than autism. Eight studies were identified and compared. RESULTS: Information extracted from the studies done in the USA, the UK, and Italy is important in understanding the complex interplay of variables but insufficient to establish non-toxicity for infants and young children still receiving TCV: a) there is ambiguity in some studies reporting neurodevelopment outcomes that seem to depend on confounding variables; b) the risk of neurotoxicity due to low doses of thimerosal is plausible at least for susceptible infants; c) there is a need to address these issues in less developed countries still using TCV in pregnant mothers, newborns, and young children. CONCLUSIONS: Since the use of TCV is still inevitable in many countries, this increases the need to protect vulnerable infants and promote actions that strengthen neurodevelopment. Developing countries should intensify campaigns that include breastfeeding among efforts to help prime the central nervous system to tolerate exposure to neurotoxic substances, especially thimerosal-Hg. http://www.ncbi.nlm.nih.gov/pubmed/20638374?dopt=Abstract “Since the use of thimerosal-containing vaccines is still inevitable in many countries, this increases the need to protect vulnerable infants ...” “The neurotoxic effects of both mercurials are interwoven with their modulatory actions on GABA(A) and NMDA receptors, which most likely involve binding to these macromolecules.” Journal Of Physiological Pharmacology • December 2010 Intermingled modulatory and neurotoxic effects of thimerosal and mercuric ions on electrophysiological responses to GABA and NMDA in hippocampal neurons Author information Wyrembek P1, Szczuraszek K, Majewska MD, Mozrzymas JW. Laboratory of Neuroscience, Department of Biophysics Wroclaw Medical University, Wroclaw, Poland paulina_wyrembek@op.pl Abstract The organomercurial, thimerosal, is at the center of medical controversy as a suspected factor contributing to neurodevelopmental disorders in children. Many neurotoxic effects of thimerosal have been described, but its interaction with principal excitatory and inhibitory neurotransmiter systems is not known. We examined, using electrophysiological recordings, thimerosal effects on GABA and NMDA-evoked currents in cultured hippocampal neurons. After brief (3 to 10 min) exposure to thimerosal at concentrations up to 100 μM, there was no significant effect on GABA or NMDA-evoked currents. However, following exposure for 60-90 min to 1 or 10 μM thimerosal, there was a significant decrease in NMDA-induced currents (p<0.05) and GABAergic currents (p<0.05). Thimerosal was also neurotoxic, damaging a significant proportion of neurons after 60-90 min exposure; recordings were always conducted in the healthiest looking neurons. Mercuric chloride, at concentrations 1 μM and above, was even more toxic, killing a large proportion of cells after just a few minutes of exposure. Recordings from a few sturdy cells revealed that micromolar mercuric chloride markedly potentiated the GABAergic currents (p<0.05), but reduced NMDA-evoked currents (p<0.05). The results reveal complex interactions of thimerosal and mercuric ions with the GABA(A) and NMDA receptors. Mercuric chloride act rapidly, decreasing electrophysiological responses to NMDA but enhancing responses to GABA, while thimerosal works slowly, reducing both NMDA and GABA responses. The neurotoxic effects of both mercurials are interwoven with their modulatory actions on GABA(A) and NMDA receptors, which most likely involve binding to these macromolecules. http://www.ncbi.nlm.nih.gov/pubmed/21224507 “... results show an association between the apparent level of mercury toxicity as measured by recognized urinary porphyrin biomarkers of mercury toxicity and the magnitude of the specific hallmark features of autism ...” Biometals • December 2010 A biomarker of mercury body-burden correlated with diagnostic domain specific clinical symptoms of autism spectrum disorder Author information Kern JK1, Geier DA, Adams JB, Geier MR. Autism Treatment Center, Dallas, TX, USA jkern@dfwair.net Abstract The study purpose was to compare the quantitative results from tests for urinary porphyrins, where some of these porphyrins are known biomarkers of heavy metal toxicity, to the independent assessments from a recognized quantitative measurement, the Autism Treatment Evaluation Checklist (ATEC), of specific domains of autistic disorders symptoms (Speech/Language, Sociability, Sensory/Cognitive Awareness, and Health/Physical/Behavior) in a group of children having a clinical diagnosis of autism spectrum disorder (ASD). After a Childhood Autism Rating Scale (CARS) evaluation to assess the development of each child in this study and aid in confirming their classification, and an ATEC was completed by a parent, a urinary porphyrin profile sample was collected and sent out for blinded analysis. Urinary porphyrins from twenty-four children, 2-13 years of age, diagnosed with autism or PDD-NOS were compared to their ATEC scores as well as their scores in the specific domains (Speech/ Language, Sociability, Sensory/Cognitive Awareness, and Health/Physical/Behavior) assessed by ATEC. Their urinary porphyrin samples were evaluated at Laboratoire Philippe Auguste (which is an ISO-approved clinical laboratory). The results of the study indicated that the participants’ overall ATEC scores and their scores on each of the ATEC subscales (Speech/Language, Sociability, Sensory/Cognitive Awareness, and Health/Physical/Behavior) were linearly related to urinary porphyrins associated with mercury toxicity. The results show an association between the apparent level of mercury toxicity as measured by recognized urinary porphyrin biomarkers of mercury toxicity and the magnitude of the specific hallmark features of autism as assessed by ATEC. http://www.ncbi.nlm.nih.gov/pubmed/20532957 “... there has been a great deal of information ... that repetitive mercury exposure during pregnancy, through thimerosal, dental amalgam, and fish consumption, and after birth, through thimerosal-containing vaccinations ... is one potential factor in autism.” Education and Training in Autism and Developmental Disabilities • 2010 Mercury and Autism: A Review Jie Zhang John J. Wheeler The College at Brockport, SUNY Tennessee Technological University Abstract The prevalence of autism has increased approximately four times in children in nearly one decade (California Health and Human Services Agency, 2003). It has been reported that explanations such as immigration, shifts in the interpretation of diagnostic criteria, improved identification, or diagnostic accuracies cannot explain the observed increase (Geier & Geier, 2005). One potential cause that has alarmed many has been the presence of thimersol, the mercury-based preservative found among immunizations. Although many refute this, concern has been leveled by many families and professionals concerning the potential impact of mercury poisoning as a causal factor. Researchers have proposed that autism may be in part caused by mercury, because there was cumulative mercury exposure through dental amalgam, fish consumption, environment pollution, and additionally, through increased thimerosal-containing vaccines for both mothers and newborns (Mutter, Naumann, Schneider, Walach, & Haley, 2005). The purpose of this study is to review the information from studies concerning the relationship between mercury exposure and autism. Conclusion To sum up, there has been a great deal of information from different studies that seems to indicate that repetitive mercury exposure during pregnancy, through thimerosal, dental amalgam, and fish consumption, and after birth, through thimerosal-containing vaccinations and pollution, in genetically susceptible individuals is one potential factor in autism. Certainly this question continues to stir debate among professionals across the medical and behavioral sciences. It serves as a grey area for many families as they seek to quell their anxiety invoked by this debate by discovering the facts. The purpose of this article was to synthesize the findings relative to this question to hopefully serve as a resource to educators as we seek to become more well-informed on this timely issue. As the prevalence rate for autism in children continues to rise, more research is needed to better understand causal factors. It is also crucial that quality reviews be conducted to synthesize a body of knowledge pertaining to these questions if the puzzle is to be solved pertaining to the link between mercury exposure and autism. http://www.daddcec.org/Portals/0/CEC/Autism_Disabilities/Research/Publications/Education_Training_Development_Disabilities/2010v45_Journals/ETDD_201003v45n1p107-115_Mercury_Autism_A_Review.pdf Acta Neurobiologiea Experimentalis • 2010 Age-dependent lower or higher levels of hair mercury in autistic children than in healthy controls Author information Majewska MD1, Urbanowicz E, Rok-Bujko P, Namyslowska I, Mierzejewski P. 1Department of Pharmacology and Physiology of the Nervous System Institute of Psychiatry and Neurology, Warsaw, Poland majewska@ipin.edu.pl Abstract An association between autism and early life exposure to mercury is a hotly debated issue. In this study, 91 autistic Polish children, male and female, 3-4 and 7-9 years old, were compared to 75 age- and sex-matched healthy children with respect to: demographic, perinatal, clinical and developmental measures, parental age, birth order, morphometric measures, vaccination history, and hair mercury content. In demographic and perinatal measures there were no consistent differences between the autistic and control groups. Autistic children had a significantly greater prevalence of adverse reactions after vaccinations and abnormal development than controls. Between 45 and 80% of autistic children experienced developmental regress. Autistic children significantly differed from healthy peers in the concentrations of mercury in hair: younger autistics had lower levels, while older - higher levels than their respective controls. The results suggest that autistic children differ from healthy children in metabolism of mercury, which seems to change with age. http://www.ncbi.nlm.nih.gov/pubmed/?term=20628443 “The results suggest that autistic children differ from healthy children in metabolism of mercury, which seems to change with age.” Acta Neurobiologiea Experimentalis • 2010 Sorting out the spinning of autism: heavy metals and the question of incidence Author information Desoto MC1, Hitlan RT. 1Department of Psychology University of Northern Iowa Cedar Falls, Iowa, USA cathy.desoto@uni.edu Abstract The reasons for the rise in autism prevalence are a subject of heated professional debate. Featuring a critical appraisal of some research used to question whether rising levels of autism are related to environmental exposure to toxins (Soden et al. 2007, Barbaresi et al. 2009, Thompson et al. 2007) we aim to evaluate the actual state of scientific knowledge. In addition, we surveyed the empirical research on the topic of autism and heavy metal toxins. In our opinion empirical investigations are finding support for a link with heavy metal toxins. The various causes that have led to the increase in autism diagnosis are likely multi-faceted, and understanding the causes is one of the most important health topics today. We argue that scientific research does not support rejecting the link between the neurodevelopmental disorder of autism and toxic exposures. http://www.ncbi.nlm.nih.gov/pubmed/?term=20628440 “In our opinion empirical investigations are finding support for a link with heavy metal toxins. We argue that scientific research does not support rejecting the link between the neurodevelopmental disorder of autism and toxic exposures.” Journal Of Toxicology And Environmental Health Part A • 2010 Delayed acquisition of neonatal reflexes in newborn primates receiving a thimerosal-containing hepatitis B vaccine: influence of gestational age and birth weight Author information Hewitson L1, Houser LA, Stott C, Sackett G, Tomko JL, Atwood D, Blue L, White ER. Department of Obstetrics and Gynecology University of Pittsburgh School of Medicine Pittsburgh, Pennsylvania, USA lch1@pitt.edu Abstract This study examined whether acquisition of neonatal reflexes in newborn rhesus macaques was influenced by receipt of a single neonatal dose of hepatitis B vaccine containing the preservative thimerosal (Th). Hepatitis B vaccine containing a weight-adjusted Th dose was administered to male macaques within 24 h of birth (n = 13). Unexposed animals received saline placebo (n = 4) or no injection (n = 3). Infants were tested daily for acquisition of nine survival, motor, and sensorimotor reflexes. In exposed animals there was a significant delay in the acquisition of root, snout, and suck reflexes, compared with unexposed animals. No neonatal responses were significantly delayed in unexposed animals. Gestational age (GA) and birth weight (BW) were not significantly correlated. Cox regression models were used to evaluate main effects and interactions of exposure with BW and GA as independent predictors and time-invariant covariates. Significant main effects remained for exposure on root and suck when controlling for GA and BW, such that exposed animals were relatively delayed in time-to-criterion. Interaction models indicated there were various interactions between exposure, GA, and BW and that inclusion of the relevant interaction terms significantly improved model fit. This, in turn, indicated that lower BW and/or lower GA exacerbated the adverse effects following vaccine exposure. This primate model provides a possible means of assessing adverse neurodevelopmental outcomes from neonatal Th-containing hepatitis B vaccine exposure, particularly in infants of lower GA or BW. The mechanisms underlying these effects and the requirements for Th requires further study. http://www.ncbi.nlm.nih.gov/pubmed/?term=20711932 “This primate model provides a possible means of assessing adverse neurodevelopmental outcomes from neonatal Thimerosal-containing hepatitis B vaccine exposure, particularly in infants ...” Acta Neurobiologia Experimentalis • 2010 Blood mercury levels in autism spectrum disorder: Is there a threshold level? Author information Geier DA1, Audhya T, Kern JK, Geier MR. Institute of Chronic Illnesses, Inc. Silver Spring, MD, USA Abstract Mercury (Hg) may significantly impact the pathogenesis of autism spectrum disorders (ASDs). Lab results generated by Vitamin Diagnostics (CLIA-approved) from 2003-2007, were examined among subjects diagnosed with an ASD (n=83) in comparison to neurotypical controls (n=89). Blood Hg levels were determined by analyzing Hg content in red blood cells (RBC) using cold vapor analysis, and consistent Hg measurements were observed between Vitamin Diagnostics and the University of Rochester. Adjusted (age, gender, and date of collection) mean Hg levels were 1.9-fold significantly (P<.0001) increased among subjects diagnosed with an ASD (21.4 microg/L) in comparison to controls (11.4 microg/L). Further, an adjusted significant (P<.0005) threshold effect >15 microg/L) was observed for Hg levels on the risk of a subject being diagnosed with an ASD in comparison to controls (odds ratio=6.4). The weight of scientific evidence supports Hg as a causal factor in subjects diagnosed with an ASD. Full Report: http://www.ncbi.nlm.nih.gov/pubmed/20628441 “The weight of scientific evidence supports ethyl mercury as a causal factor in subjects diagnosed with an Autistic Spectrum Disorder” “These findings document neurotoxic effects of thimerosal, at doses equivalent to those used in infant vaccines ...” Folia Neuropathology • 2010 Lasting neuropathological changes in rat brain after intermittent neonatal administration of thimerosal Author information Olczak M1, Duszczyk M, Mierzejewski P, Wierzba-Bobrowicz T, Majewska MD. Department of Pharmacology and Physiology of the Nervous System, Institute of Psychiatry and Neurology, ul. Sobieskiego 9, Warsaw, Poland Abstract Thimerosal, an organomercurial added as a preservative to some vaccines, is a suspected iatrogenic factor, possibly contributing to paediatric neurodevelopmental disorders including autism. We examined the effects of early postnatal administration of thimerosal (four i.m. injections, 12 or 240 μg THIM-Hg/kg, on postnatal days 7, 9, 11 and 15) on brain pathology in Wistar rats. Numerous neuropathological changes were observed in young adult rats which were treated postnatally with thimerosal. They included: ischaemic degeneration of neurons and “dark” neurons in the prefrontal and temporal cortex, the hippocampus and the cerebellum, pathological changes of the blood vessels in the temporal cortex, diminished synaptophysin reaction in the hippocampus, atrophy of astroglia in the hippocampus and cerebellum, and positive caspase-3 reaction in Bergmann astroglia. These findings document neurotoxic effects of thimerosal, at doses equivalent to those used in infant vaccines or higher, in developing rat brain, suggesting likely involvement of this mercurial in neurodevelopmental disorders. http://www.ncbi.nlm.nih.gov/pubmed/?term=21225508 “... investigators have long recognized that Hg is a neurodevelopmental poison; it can cause problems in neuronal cell migration and division, and can ultimately cause cell degeneration and death.” Acta Neurobiologia Experimentalis • 2010 The biological basis of autism spectrum disorders: Understanding causation and treatment by clinical geneticists Author information Geier DA1, Kern JK, Geier MR. The Institute of Chronic Illnesses, Inc., Silver Spring, Maryland, USA Abstract Autism spectrum disorders (ASDs) also known as pervasive developmental disorders (PDD) are a behaviorally defined group of neurodevelopmental disorders that are usually diagnosed in early childhood. ASDs disproportionately affect male children. Mercury (Hg) a heavy metal, is widespread and persistent in the environment. Mercury is a ubiquitous source of danger in fish, drugs, fungicides/herbicides, dental fillings, thermometers, and many other products. Elevated Hg concentrations may remain in the brain from several years to decades following exposure. This is important because investigators have long recognized that Hg is a neurodevelopmental poison; it can cause problems in neuronal cell migration and division, and can ultimately cause cell degeneration and death. Case-reports of patients have described developmental regressions with ASD symptoms following fetal and/or early childhood Hg exposure, and epidemiological studies have linked exposure to Hg with an elevated risk of a patient being diagnosed with an ASD. Immune, sensory, neurological, motor, and behavioral dysfunctions similar to traits defining or associated with ASDs were reported following Hg intoxication with similarities extending to neuroanatomy, neurotransmitters, and biochemistry. The sexual dimorphism of ASDs may result from synergistic neurotoxicity caused by the interaction of testosterone and Hg; in contrast, estrogen is protective, mitigating the toxicity of Hg. Mercury exposure may significantly increase androgen levels, and as a result, patients diagnosed with an ASD may significantly benefit from anti-androgen therapy. Finally, the clinical geneticist has a wealth of biomarkers to evaluate and treat patients diagnosed with an ASD. Access to full report: http://www.ncbi.nlm.nih.gov/pubmed/20628444 Neurotoxicity Research • January 2011 Correlations Between Gene Expression and Mercury Levels in Blood of Boys With and Without Autism Boryana Stamova,1,9,10 Peter G. Green,2 Yingfang Tian,1,9,10 Irva Hertz-Picciotto,3,9,10 Isaac N. Pessah,4,9,10 Robin Hansen,5,9,10 Xiaowei Yang,3 Jennifer Teng,1 Jeffrey P. Gregg,6,9,10 Paul Ashwood,7,9,10 Judy Van de Water,8,9,10 and Frank R. Sharp1,9,10 1. Department of Neurology, University of California at Davis Medical Center, Sacramento, CA 95817 USA 2. Department of Civil and Environmental Engineering, University of California at Davis, Sacramento, CA USA 3. Department of Public Health Sciences, University of California at Davis Medical Center, Sacramento, CA USA 4. Department of VM: Molecular Biosciences, University of California at Davis Medical Center, Sacramento, CA USA 5. Department of Pediatrics, University of California at Davis Medical Center, Sacramento, CA USA 6. Department of Pathology, University of California at Davis Medical Center, Sacramento, CA USA 7. Department of Medical Microbiology and Immunology, University of California at Davis Medical Center, Sacramento, CA USA 8. Division of Rheumatology, Allergy and Clinical Immunology, University of California at Davis Medical Center, Sacramento, CA 9. The MIND Institute, University of California at Davis Medical Center, 2805 50th Street, Room 2434, Sacramento, CA USA 10. UC Davis Center for Children’s Environmental Health and Disease Prevention, Sacramento, CA USA Abstract Gene expression in blood was correlated with mercury levels in blood of 2- to 5-year-old boys with autism (AU) compared to age-matched typically developing (TD) control boys. This was done to address the possibility that the two groups might metabolize toxicants, such as mercury, differently. RNA was isolated from blood and gene expression assessed on whole genome Affymetrix Human U133 expression microarrays. Mercury levels were measured using an inductively coupled plasma mass spectrometer. Analysis of covariance (ANCOVA) was performed and partial correlations between gene expression and mercury levels were calculated, after correcting for age and batch effects. To reduce false positives, only genes shared by the ANCOVA models were analyzed. Of the 26 genes that correlated with mercury levels in both AU and TD boys, 11 were significantly different between the groups (P(Diagnosis*Mercury) ≤ 0.05). The expression of a large number of genes (n = 316) correlated with mercury levels in TD but not in AU boys (P ≤ 0.05), the most represented biological functions being cell death and cell morphology. Expression of 189 genes correlated with mercury levels in AU but not in TD boys (P ≤ 0.05), the most represented biological functions being cell morphology, amino acid metabolism, and antigen presentation. These data and those in our companion study on correlation of gene expression and lead levels show that AU and TD children display different correlations between transcript levels and low levels of mercury and lead. These findings might suggest different genetic transcriptional programs associated with mercury in AU compared to TD children. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3006666/ “These data and those in our companion study on correlation of gene expression and lead levels show that Autistic and Typically Developing children display different correlations between transcript levels and low levels of mercury and lead. These findings might suggest different genetic transcriptional programs associated with mercury in Autistic compared to Typically Developing children.” Journal Of Occupational Medicine And Toxicology • January 2011 Is dental amalgam safe for humans? The opinion of the scientific committee of the European Commission Author information Mutter J. Department of Environmental and integrative medicine Lohnerhofstraße 2, 78467 Constance/Germany jm@zahnklinik.de. “The half-life of mercury in the brain can last from several years to decades, thus mercury accumulates over time Abstract It was claimed by the Scientific Committee on Emerging and Newly Identified Health Risks (SCENIHR)) in a report to the EU-Commission that “.... no risks of adverse systemic effects exist and the current use of dental amalgam does not pose a risk of systemic disease...” [1, available from: http:// ec.europa.eu/health/ph_risk/committees/04_scenihr/docs/scenihr_o_016. pdf].SCENIHR disregarded the toxicology of mercury and did not include most important scientific studies in their review. But the real scientific data show that:(a) Dental amalgam is by far the main source of human total mercury body burden. This is proven by autopsy studies which found 2-12 times more mercury in body tissues of individuals with dental amalgam. Autopsy studies are the most valuable and most important studies for examining the amalgam-caused mercury body burden.(b) These autopsy studies have shown consistently that many individuals with amalgam have toxic levels of mercury in their brains or kidneys.(c) There is no correlation between mercury levels in blood or urine, and the levels in body tissues or the severity of clinical symptoms. SCENIHR only relied on levels in urine or blood.(d) The half-life of mercury in the brain can last from several years to decades, thus mercury accumulates over time of amalgam exposure in body tissues to toxic levels. However, SCENIHR state that the half-life of mercury in the body is only “20-90 days”.(e) Mercury vapor is about ten times more toxic than lead on human neurons and with synergistic toxicity to other metals.(f) Most studies cited by SCENIHR which conclude that amalgam fillings are safe have severe methodical flaws. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3025977/ of amalgam exposure in body tissues to toxic levels. However, SCENIHR state that the half-life of mercury in the body is only “20-90 days”. Mercury vapor is about ten times more toxic than lead on human neurons and with synergistic toxicity to other metals. Most studies cited by SCENIHR which conclude that amalgam fillings are safe have severe methodical flaws.” Toxicology And Environmental Chemistry • February 2011 Toxicity biomarkers among US children compared to a similar cohort in France: a blinded study measuring urinary porphyrins Author information Kern JK1, Geier DA2, Ayzac F3, Adams JB4, Mehta JA5, Geier MR6. 1. Genetic Consultants of Dallas, 408 North Allen Drive, Allen, TX Autism Treatment Center, 10503 Metric Drive, Dallas, TX University of Texas Southwestern Medical Center at Dallas 5323 Harry Hines Boulevard, Dallas, TX 2. CoMeD, Inc. and Institute of Chronic Illnesses, Inc. 14 Redgate Court, Silver Spring, MD 20905 3. Autism Research Institute, 4182 Adams Avenue, San Diego, CA 92116 4. Department of Chemical and Materials Engineering, Arizona State University 7001 East Williams Field Road, Mesa, AZ 85212 5. Department of Communication Sciences and Disorders, Texas Woman’s University 304 Administration Drive, Denton, Texas 76204, USA 6. Autism Spectrum Disorder Centers, LLC 14 Redgate Court, Silver Spring, MD 20905, USA Abstract The purpose of this blinded study was to evaluate potential environmental toxicity in a cohort of neurotypical children (n = 28) living in a suburban area of north-central Texas in the United States (US) with a comparable age- and gender-matched cohort of neurotypical children (n = 28) living in a suburban area of southeastern France using urinary porphyrin testing: uroporphyrin (uP), heptacarboxyporphyrin (7cxP), hexacarboxyporphyrin (6cxP), pentacarboxyporphyrin (5cxP), precoproporphyrin (prcP), and coproporphyrin (cP). Results showed significantly elevated 6cxP, prcP (an atypical, mercury-specific porphyrin), and cP levels, and increasing trends in 5cxP levels, among neurotypical children in the USA compared to children in France. Data suggest that in US neurotypical children, there is a significantly increased body-burden of mercury (Hg) compared to the body-burden of Hg in the matched neurotypical children in France. The presence of lead contributing to the higher levels of cP also needs to be considered. Further, other factors including genetics can not be completely ruled out. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3898545/ “Data suggest that in US neurotypical children, there is a significantly increased body-burden of mercury compared to the body-burden of mercury in the matched neurotypical children in France.” Biometals • April 2011 A significant relationship between mercury exposure from dental amalgams a nd urinary porphyrins: a further assessment of the Casa Pia children’s dental amalgam trial Author information Geier DA1, Carmody T, Kern JK, King PG, Geier MR. Institute of Chronic Illnesses, Inc., Silver Spring, MD, USA mgeier@comcast.net Abstract Previous studies noted specific changes in urinary porphyrin excretion patterns associated with exposure to mercury (Hg) in animals and humans. In our study, urinary porphyrin concentrations were examined in normal children 8-18 yearsold from a reanalysis of data provided from a randomized, prospective clinical trial that was designed to evaluate the potential health consequences of prolonged exposure to Hg from dental amalgam fillings (the parent study). Our analysis examined dose-dependent correlations between increasing Hg exposure from dental amalgams and urinary porphyrins utilizing statistical models with adjustments for the baseline level (i.e. study year 1) of the following variables: urinary Hg, each urinary porphyrin measure, gender, race, and the level of lead (Pb) in each subject’s blood. Significant dose-dependent correlations between cumulative exposure to Hg from dental amalgams and urinary porphyrins associated with Hg body-burden (pentacarboxyporphyrin, precoproporphyrin, and coproporphyrin) were observed. Overall, 5-10% increases in Hg-associated porphyrins for subjects receiving an average number of dental amalgam fillings in comparison to subjects receiving only composite fillings were observed over the 8-year course of the study. In contrast, no significant correlations were observed between cumulative exposure to Hg from dental amalgams and urinary porphyrins not associated with Hg body-burden (uroporphyrin, heptacarboxyporphyrin, and hexacarboxyporphyrin). In conclusion, our study, in contrast to the no-effect results published from the parent study, further establishes the sensitivity and specificity of specific urinary porphyrins as a biomarker for low-level Hg body-burden, and also reveals that dental amalgams are a significant chronic contributor to Hg body-burden. http://www.ncbi.nlm.nih.gov/pubmed/?term=21053054 “In conclusion, our study, in contrast to the no-effect results published from the parent study, further establishes the sensitivity and specificity of specific urinary porphyrins as a biomarker for low-level mercury body-burden, and also reveals that dental amalgams are a significant chronic contributor to mercury body-burden.” “Recent studies suggest that children diagnosed with an autism spectrum disorder have significantly increased levels of urinary porphyrins associated with mercury (Hg) toxicity ...” Pediatrics International • April 2011 Toxicity biomarkers in autism spectrum disorder: a blinded study of urinary porphyrins Author information Kern JK1, Geier DA, Adams JB, Mehta JA, Grannemann BD, Geier MR. Research Department, Genetics Consultants of Dallas/ASD Centers, LLC., 408 N. Allen Dr, Allen, TX 75013, USA jkern@dfwair.net Abstract BACKGROUND Recent studies suggest that children diagnosed with an autism spectrum disorder (ASD) have significantly increased levels of urinary porphyrins associated with mercury (Hg) toxicity, including pentacarboxyporphyrin (5cxP), precoproporphyrin (prcP), and coproporphyrin (cP), compared to typically developing controls. However, these initial studies were criticized because the controls were not age- and gender-matched to the children diagnosed with an ASD. METHODS Urinary porphyrin biomarkers in a group of children (2-13 years of age) diagnosed with an ASD (n= 20) were compared to matched (age, gender, race, location, and year tested) group of typically developing controls (n= 20). RESULTS Participants diagnosed with an ASD had significantly increased levels of 5cxP, prcP, and cP in comparison to controls. No significant differences were found in non-Hg associated urinary porphyrins (uroporphyrins, hexacarboxyporphyrin, and heptacarboxyporphyrin). There was a significantly increased odds ratio for an ASD diagnosis relative to controls among study participants with precoproporphyrin (odds ratio = 15.5, P < 0.01) and coproporphyrin (odds ratio = 15.5, P < 0.01) levels in the second through fourth quartiles in comparison to the first quartile. CONCLUSION These results suggest that the levels of Hg-toxicity-associated porphyrins are higher in children with an ASD diagnosis than controls. Although the pattern seen (increased 5cxP, prcP, and cP) is characteristic of Hg toxicity, the influence of other factors, such as genetics and other metals cannot be completely ruled out. http://www.ncbi.nlm.nih.gov/pubmed/20626635 “Mercury (Hg) is recognized as a ubiquitous environmental neurotoxin and there is mounting evidence linking it to neurodevelopmental disorders, including autism.” Toxicology And Environmental Chemistry • May 2011 The plausibility of a role for mercury in the etiology of autism: a cellular perspective Matthew Garrecht and David W. Austin Swinburne Autism Bio-Research Initiative Faculty of Life and Social Sciences Swinburne University of Technology Hawthorn, Victoria 3122, Australia Abstract Autism is defined by a behavioral set of stereotypic and repetitious behavioral patterns in combination with social and communication deficits. There is emerging evidence supporting the hypothesis that autism may result from a combination of genetic susceptibility and exposure to environmental toxins at critical moments in development. Mercury (Hg) is recognized as a ubiquitous environmental neurotoxin and there is mounting evidence linking it to neurodevelopmental disorders, including autism. Of course, the evidence is not derived from experimental trials with humans but rather from methods focusing on biomarkers of Hg damage, measurements of Hg exposure, epidemiological data, and animal studies. For ethical reasons, controlled Hg exposure in humans will never be conducted. Therefore, to properly evaluate the Hg-autism etiological hypothesis, it is essential to first establish the biological plausibility of the hypothesis. This review examines the plausibility of Hg as the primary etiological agent driving the cellular mechanisms by which Hg-induced neurotoxicity may result in the physiological attributes of autism. Key areas of focus include: (1) route and cellular mechanisms of Hg exposure in autism; (2) current research and examples of possible genetic variables that are linked to both Hg sensitivity and autism; (3) the role Hg may play as an environmental toxin fueling the oxidative stress found in autism; (4) role of mitochondrial dysfunction; and (5) possible role of Hg in abnormal neuroexcitory and excitotoxity that may play a role in the immune dysregulation found in autism. Future research directions that would assist in addressing the gaps in our knowledge are proposed. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3173748/ Neurochemical Research • June 2011 Integrating experimental (in vitro and in vivo) neurotoxicity studies of low-dose thimerosal relevant to vaccines Author information Dórea JG. Faculty of Health Sciences Universidade de Brasília CP 04322, 70919-970, Brasília, DF, Brazil dorea@rudah.com.br Abstract There is a need to interpret neurotoxic studies to help deal with uncertainties surrounding pregnant mothers, newborns and young children who must receive repeated doses of Thimerosal-containing vaccines (TCVs). This review integrates information derived from emerging experimental studies (in vitro and in vivo) of low-dose Thimerosal (sodium ethyl mercury thiosalicylate). Major databases (PubMed and Web-of-science) were searched for in vitro and in vivo experimental studies that addressed the effects of low-dose Thimerosal (or ethylmercury) on neural tissues and animal behaviour. Information extracted from studies indicates that: (a) activity of low doses of Thimerosal against isolated human and animal brain cells was found in all studies and is consistent with Hg neurotoxicity; (b) the neurotoxic effect of ethylmercury has not been studied with co-occurring adjuvant-Al in TCVs; (c) animal studies have shown that exposure to Thimerosal-Hg can lead to accumulation of inorganic Hg in brain, and that (d) doses relevant to TCV exposure possess the potential to affect human neuro-development. Thimerosal at concentrations relevant for infants’ exposure (in vaccines) is toxic to cultured human-brain cells and to laboratory animals. The persisting use of TCV (in developing countries) is counterintuitive to global efforts to lower Hg exposure and to ban Hg in medical products; its continued use in TCV requires evaluation of a sufficiently nontoxic level of ethylmercury compatible with repeated exposure (co-occurring with adjuvant-Al) during early life. http://www.ncbi.nlm.nih.gov/pubmed/21350943 “... activity of low doses of Thimerosal against isolated human and animal brain cells was found in all studies and is consistent with mercury neurotoxicity ... animal studies have shown that exposure to Thimerosal-Hg can lead to accumulation of inorganic mercury in brain, and that doses relevant to Thimerosal-containing vaccine exposure possess the potential to affect human neuro-development.” Biological Trace Elements Research • June 2011 Automated speciation of mercury in the hair of breastfed infants exposed to ethylmercury from thimerosal-containing vaccines Author information Dórea JG1, Wimer W, Marques RC, Shade C. Universidade de Brasília, C.P.04322, 70919-970 Brasília, Federal District, Brasil dorea@rudah.com.br Abstract A simplified thiourea-based chromatography method, originally developed for methyl and inorganic mercury, was adapted to separate methylmercury (MeHg), ethylmercury (EtHg), and inorganic mercury (Hg(II)) in infants’ hair. Samples were weighed and leached with an acidic thiourea solution. Leachates were concentrated on a polymeric resin prior to analysis by Hg-thiourea liquid chromatography/cold vapor atomic fluorescence spectrometry. All but one sample showed small amounts of EtHg, and four of the six analyzed samples had proportionally higher Hg(II) as a percent of total Hg. Breastfed infants from riverine Amazonian communities are exposed to mercury in breast milk (from high levels of maternal sources that include both fish consumption and dental amalgam) and to EtHg in vaccines (from thimerosal). The method proved sensitive enough to detect and quantify acute EtHg exposure after shots of thimerosalcontaining vaccines. Based on work with MeHg and Hg(II), estimated detection limits for this method are 0.050, 0.10, and 0.10 ng g∼¹ for MeHg, Hg(II), and EtHg, respectively, for a 20-mg sample. Specific limits depend on the amount of sample extracted and the amount of extract injected. http://www.ncbi.nlm.nih.gov/pubmed/?term=20419397 “The method proved sensitive enough to detect and quantify acute Ethyl Mercury exposure after shots of thimerosal-containing vaccines.” “... significant elevation in the concentration of copper, lead and mercury ...” Biological Trace Element Research • August 2011 Level of trace elements (copper, zinc, magnesium and selenium) and toxic elements (lead and mercury) in the hair and nail of children with autism Author information Lakshmi Priya MD1, Geetha A. Department of Biochemistry, Bharathi Women’s College Chennai, 600 108 Tamil Nadu, India Abstract Autism is a multi-factorial pathology observed in children with altered levels of essential and elevated levels of toxic elements. There are also studies reporting a decrease in nutritional trace elements in the hair and nail of autistic children with healthy controls; moreover, bioelements have been shown to play an important role in the central nervous system. Therefore, the purpose of the present study was to assess the levels of trace elements like copper (Cu), zinc (Zn), magnesium (Mg), and selenium (Se) and toxic elements like mercury (Hg), and lead (Pb) in the hair and nail samples of autistic children and to evaluate whether the level of these elements could be correlated with the severity of autism. The subjects of the study were 45 autistic children with different grades of severity (low (LFA), medium (MFA), and high (HFA) functioning autism) according to Childhood Autism Rating Scale, n = 15 children in each group and 50 healthy children (age and sex matched). The boys and girls ratio involved in this study was 4:1, and they were 4-12 years of age. The study observed a valid indication of Cu body burden in the autistic children. The children with different grades of autism showed high significance (p < 0.001) in the level of copper in their hair and nail samples when compared to healthy controls. The level of Cu in the autistic children could be correlated with their degree of severity (more the Cu burden severe is autism). The study showed a significant elevation (p < 0.001) in the levels of toxic metals Pb and Hg in both hair and nail samples of autistic children when compared to healthy control group. The elevation was much pronounced in LFA group subjects when compared among autistic groups MFA and HFA. The levels of trace elements Mg and Se were significantly decreased (p < 0.001) in autistic children when compared to control. The trace element Zn showed significant variation in both hair and nails of LFA group children when compared to control group and other study groups. The significant elevation in the concentration of Cu, Pb, and Hg and significant decrease in the concentration of Mg and Se observed in the hair and nail samples of autistic subjects could be well correlated with their degrees of severity. http://www.ncbi.nlm.nih.gov/pubmed/20625937 The Science Of The Total Environment • September 2011 Mercury exposure and risks from dental amalgam in the US population post-2000 Author information Richardson GM1, Wilson R, Allard D, Purtill C, Douma S, Gravière J. SNC-Lavalin Environment, Suite 110 20 Colonnade Road, Ottawa, ON Canada mark.richardson@snclavalin.com Abstract Dental amalgam is 50% metallic mercury (Hg) by weight and Hg vapour continuously evolves from in-place dental amalgam, causing increased Hg content with increasing amalgam load in urine, faeces, exhaled breath, saliva, blood, and various organs and tissues including the kidney, pituitary gland, liver, and brain. The Hg content also increases with maternal amalgam load in amniotic fluid, placenta, cord blood, meconium, various foetal tissues including liver, kidney and brain, in colostrum and breast milk. Based on 2001 to 2004 population statistics, 181.1 million Americans carry a grand total of 1.46 billion restored teeth. Children as young as 26 months were recorded as having restored teeth. Past dental practice and recently available data indicate that the majority of these restorations are composed of dental amalgam. Employing recent US population-based statistics on body weight and the frequency of dentally restored tooth surfaces, and recent research on the incremental increase in urinary Hg concentration per amalgam-filled tooth surface, estimates of Hg exposure from amalgam fillings were determined for 5 age groups of the US population. Three specific exposure scenarios were considered, each scenario incrementally reducing the number of tooth surfaces assumed to be restored with amalgam. Based on the least conservative of the scenarios evaluated, it was estimated that some 67.2 million Americans would exceed the Hg dose associated with the reference exposure level (REL) of 0.3 μg/m(3) established by the US Environmental Protection Agency; and 122.3 million Americans would exceed the dose associated with the REL of 0.03 μg/m(3) established by the California Environmental Protection Agency. Exposure estimates are consistent with previous estimates presented by Health Canada in 1995, and amount to 0.2 to 0.4 μg/day per amalgam-filled tooth surface, or 0.5 to 1 μg/day/amalgam-filled tooth, depending on age and other factors. http://www.ncbi.nlm.nih.gov/pubmed/?term=21782213 “Based on the least conservative of the scenarios evaluated, it was estimated that some 67.2 million Americans would exceed the mercury dose associated with the reference exposure level (REL) of 0.3 μg/m(3) established by the US Environmental Protection Agency; and 122.3 million Americans would exceed the dose associated with the REL of 0.03 μg/m(3) established by the California Environmental Protection Agency.” “These data document that early postnatal Thimerosal administration causes lasting neurobehavioral impairments and neurochemical alterations in the brain ...” Behavioral Brain Research • September 2011 Persistent behavioral impairments and alterations of brain dopamine system after early postnatal administration of thimerosal in rats Author information Olczak M1, Duszczyk M, Mierzejewski P, Meyza K, Majewska MD. Department of Pharmacology and Physiology of the Nervous System Institute of Psychiatry and Neurology, 02-957 Warsaw, Poland Abstract The neurotoxic organomercurial thimerosal (THIM), used for decades as vaccine preservative, is a suspected factor in the pathogenesis of some neurodevelopmental disorders. Previously we showed that neonatal administration of THIM at doses equivalent to those used in infant vaccines or higher, causes lasting alterations in the brain opioid system in rats. Here we investigated neonatal treatment with THIM (at doses 12, 240, 1440 and 3000 μg Hg/kg) on behaviors, which are characteristically altered in autism, such as locomotor activity, anxiety, social interactions, spatial learning, and on the brain dopaminergic system in Wistar rats of both sexes. Adult male and female rats, which were exposed to the entire range of THIM doses during the early postnatal life, manifested impairments of locomotor activity and increased anxiety/neophobia in the open field test. In animals of both sexes treated with the highest THIM dose, the frequency of prosocial interactions was reduced, while the frequency of asocial/antisocial interactions was increased in males, but decreased in females. Neonatal THIM treatment did not significantly affect spatial learning and memory. THIM-exposed rats also manifested reduced haloperidol-induced catalepsy, accompanied by a marked decline in the density of striatal D2 receptors, measured by immunohistochemical staining, suggesting alterations to the brain dopaminergic system. Males were more sensitive than females to some neurodisruptive/neurotoxic actions of THIM. These data document that early postnatal THIM administration causes lasting neurobehavioral impairments and neurochemical alterations in the brain, dependent on dose and sex. If similar changes occur in THIM/mercurial-exposed children, they could contribute do neurodevelopmental disorders. http://www.ncbi.nlm.nih.gov/pubmed/?term=21549155 Neuroscience Letters • October 2011 Chronic inorganic mercury exposure induces sex-specific changes in central TNF expression: importance in autism? Author information Thomas Curtis J1, Chen Y, Buck DJ, Davis RL. Department of Pharmacology/Physiology Oklahoma State University Center for Health Sciences 1111 West 17th Street, Tulsa, OK 74107, United States Abstract Mercury is neurotoxic and increasing evidence suggests that environmental exposure to mercury may contribute to neuropathologies including Alzheimer’s disease and autism spectrum disorders. Mercury is known to disrupt immunocompetence in the periphery, however, little is known about the effects of mercury on neuroimmune signaling. Mercury-induced effects on central immune function are potentially very important given that mercury exposure and neuroinflammation both are implicated in certain neuropathologies (i.e., autism). Furthermore, mounting evidence points to the involvement of glial activation in autism. Therefore, we utilized an in vivo model to assess the effects of mercury exposure on neuroimmune signaling. In prairie voles, 10 week mercury exposure (60ppm HgCl(2) in drinking water) resulted in a male-specific increase in TNF protein expression in the cerebellum and hippocampus. These findings are consistent with our previously reported male-specific mercury-induced deficits in social behavior and further support a role for heavy metals exposure in neuropathologies such as autism. Subsequent studies should further evaluate the mechanism of action and biological consequences of heavy metals exposure. Additionally, these observations highlight the potential of neuroimmune markers in male voles as biomarkers of environmental mercury toxicity. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3443965/ “These findings are consistent with our previously reported male-specific mercury-induced deficits in social behavior and further support a role for heavy metals exposure in neuropathologies such as autism.” “... statistically significant differences in the mean urine levels of aluminum, barium, cerium, mercury ...” Maedica Bucharest • October 2011 Heavy metals and trace elements in hair and urine of a sample of arab children with autistic spectrum disorder Author information Blaurock-Busch E1, Amin OR, Rabah T. Lecturer and Advisor International Board of Clinical Metal Toxicology & German Medical Association of Clinical Metal Toxicology Abstract General information: Autism is a severe developmental disorder which involves social withdrawal, communication deficits, and stereotypic/repetitive behavior. The pathophysiological etiologies which precipitate autism symptoms remain elusive and controversial in many cases, but both genetic and environmental factors (and their interactions) have been implicated. While autism is considered multicausal, environmental factors have received significant attention. International discussion has ocused on neurotoxins such as mercury and lead, suggesting that these and other toxic metals contribute to the development of the disorder. An epidemiological study released in 2006 (Palmer et al.) linking Toxic Release Inventory (TRI) data on mercury to special education data in Texas reported a 61% increase in autism prevalence rates (or 17% adjusted) per 1000 pounds of mercury released into the environment (1). We attempted to further evaluate whether exposure to variable environmental contributes to the genesis of autistic spectrum disorder, and thus is a factor increasing the risk for developing autism symptoms in utero or in early childhood. Hospital in Jeddah, KSA. Samples were collected during the period of June 2006 to March 2008. A control group of 25 children without any psychiatric or medical disorders was agematched and sex-matched. All parents signed informed consent forms. All autistic children were subjected to a full clinical child psychiatric sheet for the diagnosis of autism spectrum disorder and exclusion of other psychiatric disorders according to the Diagnostic and Statistical Manual of Mental Disorders, 4th Edition (DSM IV). The severity of autistic symptomatology was measured by the Childhood Autism Rating Scale (CARS) and Autism Behavior Checklist (ABC) using the Arabic versions. Both groups were subjected to the Questionnaire on Exposure to Heavy Metals, Physical Symptoms, and Child Development. Hair and baseline urine samples (i.e. unprovoked urine) were taken from both groups and sent to the German clinical and environmental laboratory Micro Trace Minerals Gmbh, for the detection of heavy metals and trace elements levels where metal testing was performed via ICP-MS spectroscopy utilizing cell technique. PURPOSE The purpose of this study is to examine possible environmental risk factors and sources of exposure to mercury and other heavy metals in children with autism spectrum disorder versus controls. Through laboratory diagnostics we are able to distinguish between present and past exposure (i.e. hair analysis measurements reflect past exposure), urinary excretion levels of unprovoked urine represent immediate exposure. By assessing a spectrum of trace elements and heavy metals in hair and urine of both autistic and control groups, we focused on the participants≈ past and present exposure. RESULTS By comparing the ASD Group to the Control Group, we found a statistically significant difference in the mean hair levels of arsenic, cadmium, barium, cerium and lead (p=0.01, 0.03, 0.003, 0.003, and 0.03 respectively), and in the mean hair levels of magnesium and zinc (p=0.001 and 0.003 respectively). There were also statistically significant differences in the mean urine levels of aluminum, barium, cerium, mercury, and lead (p=0.004, 002, 0.014, 0.006 and 0.004 respectively), and in the mean urine levels of copper and germanium (p=0.049 and 0.02 respectively). An agreement was found in both specimen (hair and urine) for barium and lead. The statistically significant differences in mean hair levels of arsenic, cadmium, and cerium were not supported by urine baseline levels. Also, the statistically significant magnesium and zinc levels of hair were not supported by urine levels. A disagreement was also found with copper and germanium concentrations. METHODOLOGY The participants were 25 Autistic Spectrum Disorder (ASD) children (22 boys and 3 girls) between the age of 3 and 9 years. They were either diagnosed previously by other psychiatrist, psychologist, and developmental pediatrician or suspected by their parents as being autistic. All children were attendants to the Child Psychiatric Clinic in Erfan Psychiatric Full Report: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3391939/ Journal Of Toxicology • 2011 Toxicity of volatile methylated species of bismuth, arsenic, tin, and mercury in Mammalian cells in vitro Author information Dopp E1, von Recklinghausen U, Hippler J, Diaz-Bone RA, Richard J, Zimmermann U, Rettenmeier AW, Hirner AV. Institute of Hygiene and Occupational Medicine University of Duisburg-Essen, Hufelandstraße 55 45122 Essen, Germany Abstract The biochemical transformation of mercury, tin, arsenic and bismuth through formation of volatile alkylated species performs a fundamental role in determining the environmental processing of these elements. While the toxicity of inorganic forms of most of these compounds are well documented (e.g., arsenic, mercury) and some of them are of relatively low toxicity (e.g., tin, bismuth), the more lipid-soluble organometals can be highly toxic. In the present study we investigated the cyto- and genotoxicity of five volatile metal(loid) compounds: trimethylbismuth, dimethylarsenic iodide, trimethylarsine, tetramethyltin, and dimethylmercury. As far as we know, this is the first study investigating the toxicity of volatile metal(loid) compounds in vitro. Our results showed that dimethylmercury was most toxic to all three used cell lines (CHO-9 cells, CaCo, Hep-G2) followed by dimethylarsenic iodide. Tetramethyltin was the least toxic compound; however, the toxicity was also dependend upon the cell type. Human colon cells (CaCo) were most susceptible to the toxicity of the volatile compounds compared to the other cell lines. We conclude from our study that volatile metal(loid) compounds can be toxic to mammalian cells already at very low concentrations but the toxicity depends upon the metal(loid) species and the exposed cell type. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3189616/ “We conclude from our study that volatile metal(loid) compounds can be toxic to mammalian cells already at very low concentrations but the toxicity depends upon the metal(loid) species and the exposed cell type.” Journal Of Toxicology And Environmental Health Part A • 2011 Ancestry of pink disease (infantile acrodynia) identified as a risk factor for autism spectrum disorders Author information Shandley K1, Austin DW. Swinburne Autism Bio-Research Initiative (SABRI) Brain and Psychological Sciences Research Centre Swinburne University of Technology Hawthorn, Victoria, Australia Abstract Pink disease (infantile acrodynia) was especially prevalent in the first half of the 20th century. Primarily attributed to exposure to mercury (Hg) commonly found in teething powders, the condition was developed by approximately 1 in 500 exposed children. The differential risk factor was identified as an idiosyncratic sensitivity to Hg. Autism spectrum disorders (ASD) have also been postulated to be produced by Hg. Analogous to the pink disease experience, Hg exposure is widespread yet only a fraction of exposed children develop an ASD, suggesting sensitivity to Hg may also be present in children with an ASD. The objective of this study was to test the hypothesis that individuals with a known hypersensitivity to Hg (pink disease survivors) may be more likely to have descendants with an ASD. Five hundred and twenty-two participants who had previously been diagnosed with pink disease completed a survey on the health outcomes of their descendants. The prevalence rates of ASD and a variety of other clinical conditions diagnosed in childhood (attention deficit hyperactivity disorder, epilepsy, Fragile X syndrome, and Down syndrome) were compared to well-established general population prevalence rates. The results showed the prevalence rate of ASD among the grandchildren of pink disease survivors (1 in 22) to be significantly higher than the comparable general population prevalence rate (1 in 160). The results support the hypothesis that Hg sensitivity may be a heritable/genetic risk factor for ASD. http://www.ncbi.nlm.nih.gov/pubmed/21797771 “Pink disease was especially prevalent in the first half of the 20th century. Primarily attributed to exposure to mercury commonly found in teething powders, the condition was developed by approximately 1 in 500 exposed children.” Journal Of Toxicology And Environmental Health • 2011 A positive association found between autism prevalence and childhood vaccination uptake across the U.S. population Author information Delong G. Department of Economics and Finance Baruch College/City University of New York New York, New York, USA gayle.delong@baruch.cuny.edu Abstract The reason for the rapid rise of autism in the United States that began in the 1990s is a mystery. Although individuals probably have a genetic predisposition to develop autism, researchers suspect that one or more environmental triggers are also needed. One of those triggers might be the battery of vaccinations that young children receive. Using regression analysis and controlling for family income and ethnicity, the relationship between the proportion of children who received the recommended vaccines by age 2 years and the prevalence of autism (AUT) or speech or language impairment (SLI) in each U.S. state from 2001 and 2007 was determined. A positive and statistically significant relationship was found: The higher the proportion of children receiving recommended vaccinations, the higher was the prevalence of AUT or SLI. A 1% increase in vaccination was associated with an additional 680 children having AUT or SLI. Neither parental behavior nor access to care affected the results, since vaccination proportions were not significantly related (statistically) to any other disability or to the number of pediatricians in a U.S. state. The results suggest that although mercury has been removed from many vaccines, other culprits may link vaccines to autism. Further study into the relationship between vaccines and autism is warranted. http://www.ncbi.nlm.nih.gov/pubmed/21623535 “The results suggest that although mercury has been removed from many vaccines, other culprits may link vaccines to autism.” “Our data supports the historic evidence that heavy metals play a role in the development of Autistic Spectrum Disorder.” Maedica Bucharest • January 2012 Toxic Metals and Essential Elements in Hair and Severity of Symptoms among Children with Autism Author information Blaurock-Busch E1, Amin OR, Dessoki HH, Rabah T. Lecturer and Advisor International Board of Clinical Metal Toxicology and German Medical Association of Clinical Metal Toxicology Hersbruck, Germany Abstract OBJECTIVE The objective of this study was to assess the levels of ten toxic metals and essential elements in hair samples of children with autism, and to correlate the level of these elements with the severity of autism. METHOD The participants were 44 children, age 3 to 9 years, with Autistic Spectrum Disorder (ASD) according to Diagnostic and Statistical Manual of Mental Disorders 4th Edition, (DSM-IV). The severity of autistic symptomatology was measured by the Childhood Autism Rating Scale (CARS). Hair analysis was performed to evaluate the long term metal exposure and mineral level. RESULTS By comparing hair concentration of autistic vs nonautistic children, elevated hair concentrations were noted for aluminum, arsenic, cadmium, mercury, antimony, nickel, lead, and vanadium. Hair levels of calcium, iron, iodine, magnesium, manganese, molybdenum, zinc, and selenium were considered deficient. There was a significant positive correlation between lead & verbal communication (p = 0.020) and general impression (p = 0.008). In addition, there was a significant negative correlation between zinc & fear and nervousness (p = 0.022). CONCLUSION Our data supports the historic evidence that heavy metals play a role in the development of ASD. In combination with an inadequate nutritional status the toxic effect of metals increase along with the severity of symptoms. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3484795/ Neurochemical Research • February 2012 Administration of thimerosal to infant rats increases overflow of glutamate and aspartate in the prefrontal cortex: protective role of dehydroepiandrosterone sulfate Author information Duszczyk-Budhathoki M1, Olczak M, Lehner M, Majewska MD. Marie Curie Chairs Program Department of Pharmacology and Physiology of Nervous System Institute of Psychiatry and Neurology, 02-957, Warsaw, Poland Abstract Thimerosal, a mercury-containing vaccine preservative, is a suspected factor in the etiology of neurodevelopmental disorders. We previously showed that its administration to infant rats causes behavioral, neurochemical and neuropathological abnormalities similar to those present in autism. Here we examined, using microdialysis, the effect of thimerosal on extracellular levels of neuroactive amino acids in the rat prefrontal cortex (PFC). Thimerosal administration (4 injections, i.m., 240 μg Hg/kg on postnatal days 7, 9, 11, 15) induced lasting changes in amino acid overflow: an increase of glutamate and aspartate accompanied by a decrease of glycine and alanine; measured 10-14 weeks after the injections. Four injections of thimerosal at a dose of 12.5 μg Hg/kg did not alter glutamate and aspartate concentrations at microdialysis time (but based on thimerosal pharmacokinetics, could have been effective soon after its injection). Application of thimerosal to the PFC in perfusion fluid evoked a rapid increase of glutamate overflow. Coadministration of the neurosteroid, dehydroepiandrosterone sulfate (DHEAS; 80 mg/kg; i.p.) prevented the thimerosal effect on glutamate and aspartate; the steroid alone had no influence on these amino acids. Coapplication of DHEAS with thimerosal in perfusion fluid also blocked the acute action of thimerosal on glutamate. In contrast, DHEAS alone reduced overflow of glycine and alanine, somewhat potentiating the thimerosal effect on these amino acids. Since excessive accumulation of extracellular glutamate is linked with excitotoxicity, our data imply that neonatal exposure to thimerosal-containing vaccines might induce excitotoxic brain injuries, leading to neurodevelopmental disorders. DHEAS may partially protect against mercurials-induced neurotoxicity. Abstract: http://www.ncbi.nlm.nih.gov/pubmed/?term=22015977 Full Report: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3264864/ “Since excessive accumulation of extracellular glutamate is linked with excitotoxicity, our data imply that neonatal exposure to thimerosal-containing vaccines might induce excitotoxic brain injuries, leading to neurodevelopmental disorders.” PLoS One • 2012 Thimerosal-induced apoptosis in mouse C2C12 myoblast cells occurs through suppression of the PI3K/Akt/survivin pathway Author information Li WX1, Chen SF, Chen LP, Yang GY, Li JT, Liu HZ, Zhu W. Department of Toxicology Guangzhou Center for Disease Control and Prevention Guangzhou, China Abstract BACKGROUND Thimerosal, a mercury-containing preservative, is one of the most widely used preservatives and found in a variety of biological products. Concerns over its possible toxicity have reemerged recently due to its use in vaccines. Thimerosal has also been reported to be markedly cytotoxic to neural tissue. However, little is known regarding thimerosal-induced toxicity in muscle tissue. Therefore, we investigated the cytotoxic effect of thimerosal and its possible mechanisms on mouse C2C12 myoblast cells. METHODOLOGY/PRINCIPAL FINDINGS The study showed that C2C12 myoblast cells underwent inhibition of proliferation and apoptosis after exposure to thimerosal (125-500 nM) for 24, 48 and 72 h. Thimerosal caused S phase arrest and induced apoptosis as assessed by flow cytometric analysis, Hoechst staining and immunoblotting. The data revealed that thimerosal could trigger the leakage of cytochrome c from mitochondria, followed by cleavage of caspase-9 and caspase-3, and that an inhibitor of caspase could suppress thimerosalinduced apoptosis. Thimerosal inhibited the phosphorylation of Akt(ser473) and survivin expression. Wortmannin, a PI3K inhibitor, inhibited Akt activity and decreased survivin expression, resulting in increased thimerosal-induced apoptosis in C2C12 cells, while the activation of PI3K/Akt pathway by mIGF-I (50 ng/ml) increased the expression of survivin and attenuated apoptosis. Furthermore, the inhibition of survivin expression by siRNA enhanced thimerosal-induced cell apoptosis, while overexpression of survivin prevented thimerosal-induced apoptosis. Taken together, the data show that the PI3K/Akt/survivin pathway plays an important role in the thimerosal-induced apoptosis in C2C12 cells. CONCLUSIONS/SIGNIFICANCE Our results suggest that in C2C12 myoblast cells, thimerosal induces S phase arrest and finally causes apoptosis via inhibition of PI3K/Akt/survivin signaling followed by activation of the mitochondrial apoptotic pathway. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3492179/ “Our results suggest that in C2C12 myoblast cells, thimerosal induces S phase arrest and finally causes apoptosis via inhibition of PI3K/Akt/survivin signaling followed by activation of the mitochondrial apoptotic pathway.” Journal On Developmental Disabilities • 2012 A Link Between mercury exposure, Autism Spectrum Disorder, and other neurodevelopmental Disorders? Implications for thimerosal-containing Vaccines Lucija Tomljenovic,1 José G. Dórea,2 Christopher A. Shaw,1 1. Department of Ophthalmology and Visual Sciences University of British Columbia, Vancouver, BC 2. Faculty of Health Sciences Universidade de Brasilia, Brasilia, Brazil Abstract Autism is a multisystem developmental disorder characterized by dysfunctional immunity and impaired brain function. Although autism is partly determined by genetic susceptability factors, reported dramatic increases in the prevalence of autism in developed countries have intensified scientific focus on environmental exposures. Pre and perinatal immunotoxic insults are now strongly suspected as contributors to this increase. Mercury (Hg) is both a neuro and an immuno toxin and continues to be used in some pediatric vaccines in the form of the preservative thimerosal. Although currently there are no direct human studies on the risks of Hg exposure from thimerosalcontaining vaccines (TCVs), animal studies show that doses relevant to human TCV exposure can result in adverse neurodevelopmental outcomes. To date, TCVs continue to be administered on a regular basis to potentially the most vulnerable populations: pregnant women and children. In light of existing experimental evidence, the rationale for using this known immunotoxic and neurotoxic substance in human vaccines should be reconsidered. Given the dramatic and rapidly-growing reported prevalence of autism spectrum disorder (ASD) (Newschaffer, Falb, & Gurney, 2005), a clear answer to the etiology of this apparent epidemic would serve parents as well as the medical community entrusted with the health of all children. The focus of this commentary is on the possible involvement of thimerosal (49% ethylmercury (EtHg)) in neurodevelopmental disorders. In the past, thimerosal was used worldwide as a preservative in vaccines. Although this practice has largely been discontinued due to safety concerns (Offit & Jew, 2003), thimerosal continues to be used in less-developed and developing countries (Dórea, Marques, & Brandao, 2009)), as well as in the preservation of multi-dose vaccine vials in Canada and the United States (Centers for Disease Control and Prevention, 2011; Public Health Agency of Canada, 2011). The use of thimerosal-containing vaccines (TCVs) continues to be a highly contentious issue. The fact that a causal link between thimerosal exposure and neurodevelopmental disorders in children is not supported by many studies (Andrews et al., 2004; Hviid, Stellfeld, Wohlfahrd, & Melbye, 2003; Parker, Schwartz, Todd, & Pickering, 2004; Verstraeten et al., 2003) fails to put this issue at rest. Full Report: http://www.oadd.org/docs/41011_JoDD_18-1_34-42_Tomljenovic_et_al.pdf “Given the dramatic and rapidly-growing reported prevalence of autism spectrum disorder (ASD) (Newschaffer, Falb, & Gurney, 2005), a clear answer to the etiology of this apparent epidemic would serve parents as well as the medical community entrusted with the health of all children. The fact that a causal link between thimerosal exposure and neurodevelopmental disorders in children is not supported by many studies fails to put this issue at rest.” Environmental Sources Of Mercury Mercury Concentration Form Biological Significance 0.4ppb MetHg Median chronic intake of contaminated fish (0.4ug/kg body weight) causes delayed speech and autistic-like symptoms in male children (Corbett & Poor, 2008) 1.6ppb MetHg Provisional Tolerable Weekly Intake (PTWI) based on body weight for infants and pregnant women (1.6ug/kg; Food & Agricultural Association/World Health Organization 2006) 2.0ppb Inorganic Mercury US EPA limit for drinking water (US EPA, 2011) 200ppb Various Types Of Mercury Level in liquid that the US EPA classifies as hazardous waste based on toxocity characteristics (US EPA, 2010) 600ppb EtHg Concentration of mercury in vaccines containing trace amounts of thimerosal (0.3ug/0.5 ml. dose, or 600ug/L;Halsey, 1999) 25,000-50,000ppb EtHg Concentration in Thimerosal containing multi-dose influenza, meningococcal pneumococcal polysaccharide and diphtheria-tetanus vaccines (Offit & Jew, 2003) Journal Of Toxicology • June 2012 Thimerosal-Derived Ethylmercury Is a Mitochondrial Toxin in Human Astrocytes: Possible Role of Fenton Chemistry in the Oxidation and Breakage of mtDNA Martyn A. Sharpe, * Andrew D. Livingston, and David S. Baskin Department of Neurosurgery, The Methodist Hospital 6565 Fannin Street, Houston, TX 77030, USA Abstract Thimerosal generates ethylmercury in aqueous solution and is widely used as preservative. We have investigated the toxicology of Thimerosal in normal human astrocytes, paying particular attention to mitochondrial function and the generation of specific oxidants. We find that ethylmercury not only inhibits mitochondrial respiration leading to a drop in the steady state membrane potential, but also concurrent with these phenomena increases the formation of superoxide, hydrogen peroxide, and Fenton/Haber-Weiss generated hydroxyl radical. These oxidants increase the levels of cellular aldehyde/ketones. Additionally, we find a five-fold increase in the levels of oxidant damaged mitochondrial DNA bases and increases in the levels of mtDNA nicks and blunt-ended breaks. Highly damaged mitochondria are characterized by having very low membrane potentials, increased superoxide/hydrogen peroxide production, and extensively damaged mtDNA and proteins. These mitochondria appear to have undergone a permeability transition, an observation supported by the five-fold increase in Caspase-3 activity observed after Thimerosal treatment. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3395253/ “We find that ethylmercury not only inhibits mitochondrial respiration leading to a drop in the steady state membrane potential, but also concurrent with these phenomena increases the formation of superoxide, hydrogen peroxide, and Fenton/Haber-Weiss generated hydroxyl radical. These oxidants increase the levels of cellular aldehyde/ketones. Additionally, we find a five-fold increase in the levels of oxidant damaged mitochondrial DNA bases and increases in the levels of mtDNA nicks and blunt-ended breaks.” Cerebellum • June 2012 Maternal thimerosal exposure results in aberrant cerebellar oxidative stress, thyroid hormone metabolism, and motor behavior in rat pups; sex- and strain-dependent effects Author information Sulkowski ZL1, Chen T, Midha S, Zavacki AM, Sajdel-Sulkowska EM. Department of Psychiatry Harvard Medical School and Brigham and Women’s Hospital Boston, MA, USA Abstract Methylmercury (Met-Hg) and ethylmercury (Et-Hg) are powerful toxicants with a range of harmful neurological effects in humans and animals. While Met-Hg is a recognized trigger of oxidative stress and an endocrine disruptor impacting neurodevelopment, the developmental neurotoxicity of Et-Hg, a metabolite of thimerosal (TM), has not been explored. We hypothesized that TM exposure during the perinatal period impairs central nervous system development, and specifically the cerebellum, by the mechanism involving oxidative stress. To test this, spontaneously hypertensive rats (SHR) or Sprague-Dawley (SD) rat dams were exposed to TM (200 μg/kg body weight) during pregnancy (G10-G15) and lactation (P5-P10). Male and female neonates were evaluated for auditory and motor function; cerebella were analyzed for oxidative stress and thyroid metabolism. TM exposure resulted in a delayed startle response in SD neonates and decreased motor learning in SHR male (22.6%), in SD male (29.8%), and in SD female (55.0%) neonates. TM exposure also resulted in a significant increase in cerebellar levels of the oxidative stress marker 3-nitrotyrosine in SHR female (35.1%) and SD male (14.0%) neonates. The activity of cerebellar type 2 deiodinase, responsible for local intra-brain conversion of thyroxine to the active hormone, 3’,3,5-triiodothyronine (T3), was significantly decreased in TM-exposed SHR male (60.9%) pups. This coincided with an increased (47.0%) expression of a gene negatively regulated by T3, Odf4 suggesting local intracerebellar T3 deficiency. Our data thus demonstrate a negative neurodevelopmental impact of perinatal TM exposure which appears to be both strain- and sex-dependent. http://www.ncbi.nlm.nih.gov/pubmed/22015705 “Our data thus demonstrate a negative neurodevelopmental impact of perinatal Thimerosal exposure which appears to be both strain- and sex-dependent.” Journal Of Biomedics And Biotechnology • July 2012 Toxic effects of mercury on the cardiovascular and central nervous systems Author information Fernandes Azevedo B1, Barros Furieri L, Peçanha FM, Wiggers GA, Frizera Vassallo P, Ronacher Simões M, Fiorim J, Rossi de Batista P, Fioresi M, Rossoni L, Stefanon I, Alonso MJ, Salaices M, Valentim Vassallo D. Programa de Pós-Graduação em Ciências Fisiológicas Universidade Federal do Espírito Santo 29042-755 Vitória, ES, Brazil Abstract Environmental contamination has exposed humans to various metal agents, including mercury. This exposure is more common than expected, and the health consequences of such exposure remain unclear. For many years, mercury was used in a wide variety of human activities, and now, exposure to this metal from both natural and artificial sources is significantly increasing. Many studies show that high exposure to mercury induces changes in the central nervous system, potentially resulting in irritability, fatigue, behavioral changes, tremors, headaches, hearing and cognitive loss, dysarthria, incoordination, hallucinations, and death. In the cardiovascular system, mercury induces hypertension in humans and animals that has wide-ranging consequences, including alterations in endothelial function. The results described in this paper indicate that mercury exposure, even at low doses, affects endothelial and cardiovascular function. As a result, the reference values defining the limits for the absence of danger should be reduced. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3395437/ “The results described in this paper indicate that mercury exposure, even at low doses, affects endothelial and cardiovascular function.” Journal Of Biomedicine And Biotechnology • September 2012 Mercury Toxicity João B. T. Rocha, Michael Aschner, José G. Dórea, Sandra Ceccatelli, Marcelo Farina and Luiz Carlos L. Silveira Abstract Mercury (Hg) is one of the most toxic elements in the periodic table. Although Hg is present in nature, it has also been released into the environment for centuries as a result of anthropogenic activities. Nowadays, there are efforts to reduce its anthropogenic use; however, its environmental presence is significant and will persist. We are pleased to present this special issue on mercury toxicity. The objective of collecting research findings in a single issue devoted to the toxicology of mercury was to compile reports on the latest findings on Hg’s toxicity from renowned research groups across the world. This special issue affords the opportunity to bring together a wide range of review and research papers devoted both to basic and applied toxicity associated with various exposure scenarios and Hg species (dental material, iatrogenic ethylmercury, fish-methylmercury) along with comprehensive description on experimental models. While human studies demonstrated the noxious effects of these forms of Hg, experimental studies have assisted in defining mechanistic pathways central to Hg’s toxicity in various tissues and organ systems. The volume is dedicated in part to articles that provide new insights on important considerations of subtle effects of exposure to multiple forms of organic mercury (ethylmercury in thimerosal-containing vaccines and methylmercury (MeHg) derived from maternal fish consumption) and neurological outcomes in infants (J. G. Dórea et al.). In addition, hypersensitivity to low-dose Hg exposure from dental amalgam fillings is detailed, showing exquisite sensitivity to amalgam-derived Hg in sensitized individuals (H. McParland and S. Warnakulasuriya). Local effects of amalgam and Hg dental restoration represent the most important nonoccupational exposure to inorganic mercury, while fish consumption represents the most common source of MeHg exposure. The impacts of exposure to fish-derived MeHg at levels below those considered to pose neurological risk (hair level: 50 μg/g) were explored by Japanese researchers in subjects of the Niigata mercury poisoning (K. Maruyama et al.). Experimental research papers from this issue confirmed and extended observations that exposure of immature rodents to different chemical forms of Hg is associated with differential bodily distribution Hg (M. Blanuša et al.; C.-F. Huang et al.). C.-F. Huang et al. demonstrated that exposure of developing rats to cinnabar (HgS) caused long-lasting neurobehavioral and neurochemical toxic effect, indicating that the use of this millenary component of traditional Chinese medicine continues to represent a toxicological concern. Using an important, yet little explored experimental mouse model, J. P. Bourdineaud and colleagues demonstrated that the ingestion of MeHg-adulterated fish led to higher neurotoxicity in comparison to the ingestion of the “free salt” of methylmercury chloride (MeHgCl). The scarcity of studies on this subject highlights the need for future studies to address these persistent toxicological issues. The molecular, subcellular, cellular, and systemic toxicity of Hg was also addressed here in this volume. The cardiovascular toxicity of Hg in humans and rodents was reviewed by B. F. Azevedo et al. The impact of Hg exposure on endothelial cell physiology is well established; however, the limit of dietary-derived Hg needed to trigger cardiotoxic effects is still debatable. The negative impact of oral exposure to Hg(II) on reproductive performance of male rats was demonstrated by J. C. Heath and collaborators, highlighting the need for detailed studies to determine the nonobservable adverse effect level (NOAEL) of Hg(II) in the male reproductive system, as well as Hg deposition in target tissues. The comparative renal and hepatic toxicity of Hg(II) and MeHg in fish was addressed by V. Branco et al., demonstrating that both forms of mercury targeted the antioxidant selenoenzyme thioredoxin-reductase (TrxR) and reinforcing the central role of disrupted selenoprotein function in mercurial toxicity. The in vitro and in vivo targeting of the critical sulfhydryl-containing enzyme, Na+, K+-ATPase was reviewed by I. Kade and addressed by T. S. Huang et al., noting divergent effects in vitro and in vivo. The role of mitochondria and calcium in the neurotoxicity of MeHg was reviewed by D. Roos et al., providing evidence that Ca2+, glutamate, oxidative stress, and mitochondria play a central role in its neurotoxicity. The efficacy of the marine n-3 fatty acids, eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA) in attenuating MeHg-induced toxicity was studied in fish and mammalian cell cultures. O. J. Nøstbakken et al. demonstrated that DHA decreased MeHg uptake into mammalian cells but increased MeHg-induced apoptosis in fish cells. We hope that the new findings on the subtle effects of combined exposure to iatrogenic ethylmercury (from thimerosal-containing vaccines) and maternal MeHg (from fish consumption), as well as the results of experimental studies and the critical reviews presented herein can shed novel information on mercury’s absorption, distribution, metabolism, and excretion, as well as its ill effects at the cellular, molecular, and organismal levels. Understanding of these facets of research is required for derivation on environmental and health policies as well as guidance for the most promising future research venues. Finally, we would like to thank all the reviewers that have contributed their time and insight to this special issue as well as the journal’s personnel (particularly Doaa Hassan) for their support and making possible the publication of this special issue. www.hindawi.com/journals/bmri/2012/831890/ Neurotoxicology And Teratology • November 2012 Neonatal exposure to Thimerosal from vaccines and child development in the first 3 years of life Author information Mrozek-Budzyn D1, Majewska R, Kieltyka A, Augustyniak M. Epidemiology and Preventive Medicine Jagiellonian University Medical College, Krakow, Poland dorota.mrozek-budzyn@uj.edu.pl Abstract BACKGROUND: Despite the common use of Thimerosal as a preservative in childhood vaccines since the 1930s, there are not many studies on ethylmercury toxicokinetics and toxicodynamics in infants. The knowledge of ethylmercury’s potential adverse effects is derived mostly from parallel methylmercury research or from animal and theoretical models. AIM OF THE STUDY: This study was designed to examine the relationship between neonatal exposure to Thimerosal-containing vaccine (TCV) and child development. MATERIAL AND METHODS: The study sample consisted of 196 infants born between January 2001 and March 2003 to mothers attending ambulatory prenatal clinics in the first and second trimesters of pregnancy in Krakow. Vaccination history (date and the type of the vaccine) was extracted from physicians’ records. Child development was assessed using the Bayley Scales of Infant Development (BSID-II) measured in one-year intervals over 3years. General Linear Model (GLM) and Generalized Estimating Equation (GEE) models adjusted for potential confounders were used to assess the association. RESULTS: An adverse effect of neonatal TCV exposure was observed for the psychomotor development index (PDI) only in the 12th and 24th months of life (ß=-6.44, p<0.001 and ß=-5.89, p<0.001). No significant effect of neonatal TCV exposure was found in the 36th month. The overall deficit in the PDI attributable to neonatal TCV exposure measured over the course of the three-year follow-up (GEE) was significantly higher in TCV group (ß=-4.42, p=0.001). MDI scores did not show the adverse association with neonatal TCV exposure. http://www.ncbi.nlm.nih.gov/pubmed/23069197 “Despite the common use of Thimerosal as a preservative in childhood vaccines since the 1930s, there are not many studies on ethylmercury toxicokinetics and toxicodynamics in infants. An adverse effect of neonatal TCV exposure was observed for the psychomotor development index ...” American Journal Of Epidemiology • November 2012 Re: “Prenatal Exposure to Mercury and Infant Neurodevelopment in a Multicenter Cohort in Spain: Study of Potential Modifiers” Author Information José G. Dórea Department of Nutrition, Faculty of Health Sciences Universidade de Brasilia, 70919-970 Brasilia, DF, Brazil dorea@rudah.com.br) Abstract In an interesting study, Llop et al. (1) addressed the vulnerability of the central nervous system to mercury during early development. Their findings suggested a negative association between total cord blood mercury levels and psychomotor development at approximately 14 months of age only in girls. Although I welcome these interesting findings, I would like to raise the issue of a source of organic mercury exposure during the perinatal period, namely ethylmercury in vaccines that contain Thimerosal (Noah Technologies Corporation, San Antonio, Texas). During recruitment of mothers (in November 2003) and infants born in 2004 in the study by Llop et al., Thimerosal-containing vaccines (TCVs) were still used in some European Union countries and probably in Spain (2). Therefore, it is reasonable to assume that additional mercury exposure could have occurred, at least for some of the sampled subjects. According to Spain’s vaccination schedule, some children could be exposed to TCV ethylmercury (mainly in diphtheria-tetanus-pertussis and hepatitis B vaccines); furthermore, during pregnancy, some mothers were also likely to be exposed to TCVs. Neither infant vaccines nor maternal exposure to TCVs, anti- Rho(D) immune globulin (to Rh-negative participants), or dental amalgams during pregnancy were mentioned in the otherwise assiduous study of Llop et al. Assuming that there was a gradual discontinuation of TCVs in Spain, readers familiar with the changes occurring in vaccine type used in European Union countries during the early 2000s could benefit from a post hoc discussion of this confounding mercury source. The pertinence of this discussion is further justified by the recent reports that a subtle but significant association with psychomotor development can be shown in young children as a result of exposure to TCVs in Poland (3), Korea (4), and Brazil (5). Indeed, ecologic and epidemiologic studies in the United States, United Kingdom, and Italy (6) that addressed children’s neurodevelopment associated with ethylmercury exposure in TCVs indicated collectively that “a) there is ambiguity in some studies reporting neurodevelopment outcomes that seem to depend on confounding variables; b) the risk of neurotoxicity due to low doses of Thimerosal is plausible at least for susceptible infants” (6, p. 1580). Furthermore, recent findings have shown that neurologic responses in animals (mice, rats, and rhesus monkeys) exposed to ethylmercury from the hepatitis B vaccine in the early postnatal life presented statistically significant differences when compared with controls (7); there is also strong in vitro evidence of Thimerosal neurotoxicity in small doses relevant to TCVs (7). Ethylmercury has a shorter half-life than does methylmercury; therefore, it is unlikely that it could contribute to total mercury levels in cord blood measured by Llop et al. (1). Nevertheless, ethylmercury exposure can be ascertained from vaccination cards (3–5). Information on the association of neurodevelopment and coexposure to multiple forms of mercury is limited, and despite the current widespread use of TCVs (in most countries), it is even scarcer for specific exposure to small amounts of ethylmercury (8). Therefore, only studies like that of Llop et al. (1) can offer the opportunity to explore possible cumulative insults resulting from maternal environmental (methylmercury) exposure and additional infant ethylmercury exposure due to differential (TCV) immunization. Although I do not question the statistical model, results, or interpretation of the study by Llop et al. (1), I hope to provoke a post hoc discussion highlighting possible ethylmercury exposure during pregnancy and postnatal periods via TCVs. Without proper testing, we will never discover whether additional TCV-related mercury exposure in early life can affect neurodevelopment tests. www.http://aje.oxfordjournals.org/content/early/2012/11/15/aje.kws386 “... a subtle but significant association with psychomotor development can be shown in young children as a result of exposure to Thimerosal containing vaccines in Poland, Korea, and Brazil ... there is also strong in vitro evidence of Thimerosal neurotoxicity in small doses relevant to Thimerosal containing vaccines.” Brain Development • March 2013 Prenatal exposure to organomercury, thimerosal, persistently impairs the serotonergic and dopaminergic systems in the rat brain: implications for association with developmental disorders Author information Ida-Eto M1, Oyabu A, Ohkawara T, Tashiro Y, Narita N, Narita M. Department of Anatomy II Mie University Graduate School of Medicine Tsu, Mie 514-8507, Japan etom@doc.medic.mie-u.ac.jp Abstract Thimerosal, an organomercury compound, has been widely used as a preservative. Therefore, concerns have been raised about its neurotoxicity. We recently demonstrated perturbation of early serotonergic development by prenatal exposure to thimerosal (Ida-Eto et al. (2011) [11]). Here, we investigated whether prenatal thimerosal exposure causes persistent impairment after birth. Analysis on postnatal day 50 showed significant increase in hippocampal serotonin following thimerosal administration on embryonic day 9. Furthermore, not only serotonin, striatal dopamine was significantly increased. These results indicate that embryonic exposure to thimerosal produces lasting impairment of brain monoaminergic system, and thus every effort should be made to avoid the use of thimerosal. http://www.ncbi.nlm.nih.gov/pubmed/?term=22658806 “These results indicate that embryonic exposure to thimerosal produces lasting impairment of brain monoaminergic system, and thus every effort should be made to avoid the use of thimerosal.” “... dental amalgams contribute to ongoing kidney damage ... in a dose-dependent fashion.” Human Experiments In Toxicology • April 2013 A significant dose-dependent relationship between mercury exposure from dental amalgams and kidney integrity biomarkers: a further assessment of the Casa Pia children’s dental amalgam trial Author information Geier DA1, Carmody T, Kern JK, King PG, Geier MR. Institute of Chronic Illnesses, Inc., Silver Spring, USA Abstract Dental amalgams are a commonly used dental restorative material. Amalgams are about 50% mercury (Hg), and Hg is known to significantly accumulate in the kidney. It was hypothesized that because Hg accumulates in the proximal tubules (PTs), glutathione-S-transferases (GST)-a (suggestive of kidney damage at the level of PT) would be expected to be more related to Hg exposure than GST-π (suggestive of kidney damage at the level of the distal tubules). Urinary biomarkers of kidney integrity were examined in children of 8-18 years old, with and without dental amalgam fillings, from a completed clinical trial (parent study). Our study determined whether there was a significant dose-dependent correlation between increasing Hg exposure from dental amalgams and GST-a and GST-π as biomarkers of kidney integrity. Overall, the present study, using a different and more sensitive statistical model than the parent study, revealed a statistically significant dose-dependent correlation between cumulative exposure to Hg from dental amalgams and urinary levels of GST-a, after covariate adjustment; where as, a nonsignificant relationship was observed with urinary levels of GST-π. Furthermore, it was observed that urinary GST-a levels increased by about 10% over the 8-year course of the study among individuals with an average exposure to amalgams among the study subjects from the amalgam group, in comparison with study subjects with no exposure to dental amalgams. The results of our study suggest that dental amalgams contribute to ongoing kidney damage at the level of the PTs in a dose-dependent fashion. http://www.ncbi.nlm.nih.gov/pubmed/22893351 “This suggests certain individuals with a mild mitochondrial defect may be highly susceptible to mitochondrial specific toxins like the vaccine preservative thimerosal.” Journal Of Toxicology • June 2013 B-lymphocytes from a population of children with autism spectrum disorder and their unaffected siblings exhibit hypersensitivity to thimerosal Author information Sharpe MA1, Gist TL, Baskin DS. Department of Neurosurgery, The Methodist Neurological Institute 6560 Fannin Street, Scurlock Tower No. 944, Houston, TX 77030, USA Abstract The role of thimerosal containing vaccines in the development of autism spectrum disorder (ASD) has been an area of intense debate, as has the presence of mercury dental amalgams and fish ingestion by pregnant mothers. We studied the effects of thimerosal on cell proliferation and mitochondrial function from B-lymphocytes taken from individuals with autism, their nonautistic twins, and their nontwin siblings. Eleven families were examined and compared to matched controls. B-cells were grown with increasing levels of thimerosal, and various assays (LDH, XTT, DCFH, etc.) were performed to examine the effects on cellular proliferation and mitochondrial function. A subpopulation of eight individuals (4 ASD, 2 twins, and 2 siblings) from four of the families showed thimerosal hypersensitivity, whereas none of the control individuals displayed this response. The thimerosal concentration required to inhibit cell proliferation in these individuals was only 40% of controls. Cells hypersensitive to thimerosal also had higher levels of oxidative stress markers, protein carbonyls, and oxidant generation. This suggests certain individuals with a mild mitochondrial defect may be highly susceptible to mitochondrial specific toxins like the vaccine preservative thimerosal. http://www.ncbi.nlm.nih.gov/pubmed/?term=23843785 “... decreased glutathione reserve capacity in children with an Autistic Spectrum Disorder could make them more susceptible to the toxic effects of Thimerosal routinely administered as part of mandated childhood immunization schedules.” International Journal Of Environmental Research And Public Health • August 2013 Thimerosal exposure and the role of sulfation chemistry and thiol availability in autism Author information Kern JK1, Haley BE, Geier DA, Sykes LK, King PG, Geier MR. Institute of Chronic Illnesses, Inc., Silver Spring, MD 20905, USA jKern@dfwair.net Abstract Autism spectrum disorder (ASD) is a neurological disorder in which a significant number of the children experience a developmental regression characterized by a loss of previously acquired skills and abilities. Typically reported are losses of verbal, nonverbal, and social abilities. Several recent studies suggest that children diagnosed with an ASD have abnormal sulfation chemistry, limited thiol availability, and decreased glutathione (GSH) reserve capacity, resulting in a compromised oxidation/reduction (redox) and detoxification capacity. Research indicates that the availability of thiols, particularly GSH, can influence the effects of thimerosal (TM) and other mercury (Hg) compounds. TM is an organomercurial compound (49.55% Hg by weight) that has been, and continues to be, used as a preservative in many childhood vaccines, particularly in developing countries. Thiol-modulating mechanisms affecting the cytotoxicity of TM have been identified. Importantly, the emergence of ASD symptoms post-6 months of age temporally follows the administration of many childhood vaccines. The purpose of the present critical review is provide mechanistic insight regarding how limited thiol availability, abnormal sulfation chemistry, and decreased GSH reserve capacity in children with an ASD could make them more susceptible to the toxic effects of TM routinely administered as part of mandated childhood immunization schedules. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3774468/ Journal Of Applied Toxicology • August 2013 Toxicity of ethylmercury (and Thimerosal): a comparison with methylmercury José G. Dórea1,*, Marcelo Farina2 andJoão B. T. Rocha3 Department of Nutrition, Faculty of Health Sciences Universidade de Brasilia, Brasilia, DF, Brazil Departamento de Bioquímica, Centro de Ciências Biológicas Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil Departamento de Química, Centro de Ciências Naturais e Exatas Universidade Federal de Santa Maria, Santa Maria, RS, Brazil Abstract Ethylmercury (etHg) is derived from the metabolism of thimerosal (o-carboxyphenyl-thio-ethyl-sodium salt), which is the most widely used form of organic mercury. Because of its application as a vaccine preservative, almost every human and animal (domestic and farmed) that has been immunized with thimerosal-containing vaccines has been exposed to etHg. Although methylmercury (meHg) is considered a hazardous substance that is to be avoided even at small levels when consumed in foods such as seafood and rice (in Asia), the World Health Organization considers small doses of thimerosal safe regardless of multiple/repetitive exposures to vaccines that are predominantly taken during pregnancy or infancy. We have reviewed in vitro and in vivo studies that compare the toxicological parameters among etHg and other forms of mercury (predominantly meHg) to assess their relative toxicities and potential to cause cumulative insults. In vitro studies comparing etHg with meHg demonstrate equivalent measured outcomes for cardiovascular, neural and immune cells. However, under in vivo conditions, evidence indicates a distinct toxicokinetic profile between meHg and etHg, favoring a shorter blood half-life, attendant compartment distribution and the elimination of etHg compared with meHg. EtHg’s toxicity profile is different from that of meHg, leading to different exposure and toxicity risks. Therefore, in real-life scenarios, a simultaneous exposure to both etHg and meHg might result in enhanced neurotoxic effects in developing mammals. However, our knowledge on this subject is still incomplete, and studies are required to address the predictability of the additive or synergic toxicological effects of etHg and meHg (or other neurotoxicants). http://www.ncbi.nlm.nih.gov/pubmed/23401210 “the World Health Organization considers small doses of thimerosal safe regardless of multiple/repetitive exposures to vaccines that are predominantly taken during pregnancy or infancy ... in real-life scenarios, a simultaneous exposure to both etHg and meHg might result in enhanced neurotoxic effects in developing mammals. However, our knowledge on this subject is still incomplete, and studies are required to address the predictability of the additive or synergic toxicological effects of etHg and meHg (or other neurotoxicants).” “Ethylmercury (EtHg) ... has received significant toxicological attention due to its presence in thimerosal-containing vaccines.” Neuro Toxicology • September 2013 Comparative study on methyl- and ethylmercury-induced toxicity in C6 glioma cells and the potential role of LAT-1 in mediating mercurial-thiol complexes uptake Luciana T. Zimmermanna, Danúbia B. Santosa, Aline A. Naimea, Rodrigo B. Leala, José G. Dóreab, Fernando Barbosa Jr.c, Michael Aschnerd, João Batista T. Rochae, Marcelo Farinaa a. Departamento de Bioquímica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil b. Departamento de Nutrição, Faculdade de Ciências da Saúde, Faculdade de Medicina, Universidade de Brasília, Brasília, Brazil c. Laboratório de Toxicologia e Essencialidade de Metais, Faculdade de Ciências, Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil d. Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN 37232, USA e. Departamento de Química, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil Abstract Various forms of mercury possess different rates of absorption, metabolism and excretion, and consequently, toxicity. Methylmercury (MeHg) is a highly neurotoxic organic mercurial. Human exposure is mostly due to ingestion of contaminated fish. Ethylmercury (EtHg), another organic mercury compound, has received significant toxicological attention due to its presence in thimerosal-containing vaccines. This study was designed to compare the toxicities induced by MeHg and EtHg, as well as by their complexes with cysteine (MeHg-S-Cys and EtHg-SCys) in the C6 rat glioma cell line. MeHg and EtHg caused significant (p < 0.0001) decreases in cellular viability when cells were treated during 30 min with each mercurial following by a washing period of 24 h (EC50 values of 4.83 and 5.05 μM, respectively). Significant cytotoxicity (p < 0.0001) was also observed when cells were treated under the same conditions with MeHg-S-Cys and EtHg-S-Cys, but the respective EC50 values were significantly increased (11.2 and 9.37 μM). l-Methionine, a substrate for the l-type neutral amino acid carrier transport (LAT) system, significantly protected against the toxicities induced by both complexes (MeHg-S-Cys and EtHg-S-Cys). However, no protective effects of l-methionine were observed against MeHg and EtHg toxicities. Corroborating these findings, l-methionine significantly decreased mercurial uptake when cells were exposed to MeHg-S-Cys (p = 0.028) and EtHg-S-Cys (p = 0.023), but not to MeHg and EtHg. These results indicate that the uptake of MeHg-S-Cys and EtHg-S-Cys into C6 cells is mediated, at least in part, through the LAT system, but MeHg and EtHg enter C6 cells by mechanisms other than LAT system. http://www.sciencedirect.com/science/article/pii/S0161813X13000922 Biological Trace Element Research • September 2013 Mercury transfer during pregnancy and breastfeeding: hair mercury concentrations as biomarker Author information Marques RC1, Bernardi JV, Dórea JG, Leão RS, Malm O. Universidade Federal do Rio de Janeiro Campus Macaé, Rio de Janeiro, RJ, Brazil Abstract Hair mercury (HHg) concentration is a biomarker of exposure that is widely used to assess environmental contamination by fish methylmercury and neurodevelopment in children. In the Rio Madeira basin (Brazilian Amazon), total HHg concentrations in 649 mother-infant pairs were measured at birth (prenatal exposure) and after 6 months of exclusive breastfeeding; these mother-infant pairs were from high fish-eating communities (urban, n = 232; rural, n = 35; and Riverine, n = 262) and low fish-eating tinminer settlers (n = 120). Differences in kinetics were seen between Hg exposure from fish consumption and environmental exposure to a tin-ore mining environment. Overall maternal HHg concentrations (at childbirth and after 6 months of lactation) were higher than those of infant HHg. However, the relative change in HHg after 6 months of lactation showed that mothers decreased HHg while infants increased HHg. The relative change showed a consistently higher increase for girls than boys with a statistical significance only in high fish-eating mothers. The correlation coefficients between maternal and newborn hair were high and statistically significant for mothers living in urban (r = 0.66, p < 0.001), rural (r = 0.89, p < 0.001), and Riverine (r = 0.89, p < 0.001) communities not for tin miner settlers (r = 0.07, p = 0.427). After 6 months of exclusive breastfeeding, correlation coefficients showed high correlation coefficients and statistical significance for all groups (urban, r = 0.73, p < 0.001; rural, r = 0.88, p < 0.001; Riverine, r = 0.91, p < 0.001) except for Tin miners (r = -0.07, p = 0.428). A linear model analysis was used to assess the longitudinal associations of maternal total HHg and total HHg at birth (0 days) and 6 months of age in exclusively breastfed infants. Regression analysis significantly predicted HHg in newborn from maternal HHg for high fish-eating maternal-infant pairs. CONCLUSION: The concentration of mercury accumulated in newborn tissues (in utero and during breastfeeding) relevant to both, maternal sources and infant exposure, can be reliably assessed from maternal hair. http://www.ncbi.nlm.nih.gov/pubmed/23836367 “The concentration of mercury accumulated in newborn tissues (in utero and during breastfeeding) relevant to both, maternal sources and infant exposure, can be reliably assessed from maternal hair.” Toxicological and Environmental Chemistry • September 2013 Thimerosal in childhood vaccines contributes to accumulating mercury toxicity in the kidney Maria Fernanda Hornos Carneiro, Christudas Morais, Fernando Barbosa Jr, Glenda C Gobe Abstract Mercury (Hg) is a hazardous chemical that accumulates in many cells and tissues, thereby producing toxicity. The kidney is a key target organ for Hg accumulation and toxicity. The contributing factors to Hg accumulation in humans include: (1) elemental and inorganic Hg exposure, often occurring by inhalation of Hg vapors; (2) exposure to methyl Hg (meHg), for example, through contaminated seafood; and (3) exposure to ethyl mercury (etHg) via thimerosal-containing vaccines. Systematic investigations on the toxic effects of etHg/thimerosal on the nervous system were carried out, and etHg/thimerosal emerged as a possible risk factor for autism and other neurodevelopmental disorders. There is, however, little known about the mechanisms and molecular interactions underlying toxicity of etHg/thimerosal in the kidney, which is the focus of the current review. Susceptible populations such as infants, pregnant women, and the elderly are exposed to etHg through thimerosal-containing vaccines, and in-depth study of the potential adverse effects on the kidney is needed. In general, toxicity occurring in association with different forms of Hg is related to: intracellular thiol metabolism and oxidative stress reactions; mitochondrial function; intracellular distribution and build-up of calcium; apoptosis; expression of stress proteins; and also interaction with the cytoskeleton. Available evidence for the etHg-induced toxicity in the kidney was examined, and the main mechanisms and molecular interactions of cytotoxicity of etHg/thimerosal exposure in kidney described. Such accumulating knowledge may help to indicate molecular pathways that, if modulated, may better handle Hg-mediated toxicity. “Systematic investigations on the toxic effects of ethyl mercury/thimerosal on the nervous system were carried out, and ethyl mercury/thimerosal emerged as a possible risk factor for autism and other neurodevelopmental disorders.” https://www.researchgate.net/publication/260943204_Thimerosal_in_childhood_vaccines_contributes_to_accumulating_mercury_toxicity_in_the_kidney International Journal Of Environmental Research And Public Health • October 2013 The kinetic signature of toxicity of four heavy metals and their mixtures on MCF7 breast cancer cell line Author information Egiebor E1, Tulu A, Abou-Zeid N, Aighewi IT, Ishaque A. Abstract This study evaluated the kinetic signature of toxicity of four heavy metals known to cause severe health and environmental issues--cadmium (Cd), mercury (Hg) lead (Pb) arsenic (As)--and the mixture of all four metals (Mix) on MCF7 cancer cells, in the presence and absence of the antioxidant glutathione (GSH). The study was carried out using real time cell electronic sensing (RT-CES). RT-CES monitors in real time the electrical impedance changes at the electrode/culture medium interface due to the number of adhered cells, which is used as an index of cell viability. Cells were seeded for 24 h before exposure to the metals and their mixtures. The results showed that in the presence and absence of cellular glutathione, arsenic was the most cytotoxic of all five treatments, inducing cell death after 5 h of exposure. Lead was the least cytotoxic in both scenarios. In the presence of cellular GSH, the cytotoxic trend was As > Cd > MIX > Hg > Pb, while in the absence of GSH, the cytotoxic trend was As > Hg > MIX > Cd > Pb. The findings from this study indicate the significance of glutathione-mediated toxicity of the metals examined--particularly for mercury--and may be clinically relevant for disorders such as autism spectrum disorder where decreased glutathione-based detoxification capacity is associated with increased mercury intoxication. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3822392/ “The findings from this study indicate the significance of glutathione-mediated toxicity of the metals examined—particularly for mercury—and may be clinically relevant for disorders such as autism spectrum disorder where decreased glutathione-based detoxification capacity is associated with increased mercury intoxication.” World Journal Of Pediatrics • November 2013 Effect of thimerosal on the neurodevelopment of premature rats Author information Chen YN1, Wang J, Zhang J, Li SJ, He L, Shao DD, Du HY. The Key Laboratory of Biomedical Information Engineering of Ministry of Education and Institute of Biomedical Engineering School of Life Science and Technology Xi’an Jiaotong University, Xi’an, 710049, China Abstract BACKGROUND This study was undertaken to determine the effect of thimerosal on the neurodevelopment of premature rats. METHODS Thimerosal was injected into premature SD rats at a dose of 32.8, 65.6, 98.4 or 131.2 μg/kg on postnatal day 1. Expression of dopamine D4 receptor (DRD4) and serotonin 2A receptor (5-HT2AR), apoptosis in the prefrontal cortex on postinjection day 49, and learning and memory function were studied and compared with those in a control group injected with saline. RESULTS Expression of DRD4 and 5-HT2AR and learning function decreased, and apoptosis increased significantly in the 131.2 μg/kg group (P<0.001). Memory function was significantly impaired by 65.6 (P<0.05), 98.4 and 131.2 μg/kg (P<0.001). CONCLUSIONS The negative adverse consequences on neurodevelopment observed in the present study are consistent with previous studies; this study raised serious concerns about adverse neurodevelopmental disorder such as autism in humans following the ongoing worldwide routine administration of thimerosalcontaining vaccines to infants. http://www.ncbi.nlm.nih.gov/pubmed/?term=24235069 “The negative adverse consequences on neurodevelopment observed in the present study are consistent with previous studies; this study raised serious concerns about adverse neurodevelopmental disorder such as autism in humans following the ongoing worldwide routine administration of thimerosal containing vaccines to infants.” International Journal Of Environmental Research And Public Health • December 2013 Proposed toxic and hypoxic impairment of a brainstem locus in autism Author information McGinnis WR1, Audhya T, Edelson SM. Autism Research Institute, 4182 Adams Avenue, San Diego, CA 92116, USA woody.mcginnis@gmail.com Abstract Electrophysiological findings implicate site-specific impairment of the nucleus tractus solitarius (NTS) in autism. This invites hypothetical consideration of a large role for this small brainstem structure as the basis for seemingly disjointed behavioral and somatic features of autism. The NTS is the brain’s point of entry for visceral afference, its relay for vagal reflexes, and its integration center for autonomic control of circulatory, immunological, gastrointestinal, and laryngeal function. The NTS facilitates normal cerebrovascular perfusion, and is the seminal point for an ascending noradrenergic system that modulates many complex behaviors. Microvascular configuration predisposes the NTS to focal hypoxia. A subregion--the “pNTS”--permits exposure to all blood-borne neurotoxins, including those that do not readily transit the blood-brain barrier. Impairment of acetylcholinesterase (mercury and cadmium cations, nitrates/nitrites, organophosphates, monosodium glutamate), competition for hemoglobin (carbon monoxide, nitrates/nitrites), and higher blood viscosity (net systemic oxidative stress) are suggested to potentiate microcirculatory insufficiency of the NTS, and thus autism. “A subregion—the “pNTS”—permits exposure to all blood-borne neurotoxins, including those that do not readily transit the blood-brain barrier. Impairment of acetylcholinesterase (mercury and cadmium cations, nitrates/nitrites, organophosphates, monosodium glutamate), competition for hemoglobin (carbon monoxide, nitrates/nitrites), and higher blood viscosity (net systemic oxidative stress) are suggested to potentiate microcircula- Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3881151/ tory insufficiency of the NTS, and thus autism.” “... the present study provides new epidemiological evidence supporting an association between increasing organic-mercury exposure from Thimerosal-containing childhood vaccines and the subsequent risk of an Autistic Spectrum Disorder diagnosis.” Translational Neurodegeneration • December 2013 A two-phase study evaluating the relationship between Thimerosal-containing vaccine administration and the risk for an autism spectrum disorder diagnosis in the United States Author information Geier DA, Hooker BS, Kern JK, King PG, Sykes LK, Geier MR1. The Institute of Chronic Illnesses Inc, 14 Redgate Ct, Silver Spring, MD, USA mgeier@comcast.net Abstract BACKGROUND Autism spectrum disorder (ASD) is defined by standardized criteria of qualitative impairments in social interaction, qualitative impairments in communication, and restricted and stereotyped patterns of behavior, interests, and activities. A significant number of children diagnosed with ASD suffer a loss of previously-acquired skills, which is suggestive of neurodegeneration or a type of progressive encephalopathy with an etiological pathogenic basis occurring after birth. To date, the etiology of ASD remains under debate, however, many studies suggest toxicity, especially from mercury (Hg), in individuals diagnosed with an ASD. The present study evaluated concerns about the toxic effects of organic-Hg exposure from Thimerosal (49.55% Hg by weight) in childhood vaccines by conducting a two-phased (hypothesis generating/hypothesis testing) study with documented exposure to varying levels of Thimerosal from vaccinations. METHODS A hypothesis generating cohort study was undertaken to evaluate the relationship between exposure to organic-Hg from a Thimerosal-containing Diphtheria-Tetanus-acellular-Pertussis (DTaP) vaccine in comparison to a Thimerosal-free DTaP vaccine administered, from 1998 through 2000, for the risk of ASD as reported in the Vaccine Adverse Event Reporting System (VAERS) database (phase I). A hypothesis testing case-control study was undertaken to evaluate the relationship between organic-Hg exposure from Thimerosal-containing hepatitis B vaccines administered at specific intervals in the first six months of life among cases diagnosed with an ASD and controls born between 1991 through 1999 in the Vaccine Safety Datalink (VSD) database (phase II). RESULTS In phase I, it was observed that there was a significantly increased risk ratio for the incidence of ASD reported following the Thimerosal-containing DTaP vaccine in comparison to the Thimerosal-free DTaP vaccine. In phase II, it was observed that cases diagnosed with an ASD were significantly more likely than controls to receive increased organic-Hg from Thimerosalcontaining hepatitis B vaccine administered within the first, second, and sixth month of life. CONCLUSIONS Routine childhood vaccination is an important public health tool to reduce the morbidity and mortality associated with infectious diseases, but the present study provides new epidemiological evidence supporting an association between increasing organic-Hg exposure from Thimerosal-containing childhood vaccines and the subsequent risk of an ASD diagnosis. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3878266/ Current Medical Chemistry • 2013 Low-dose mercury exposure in early life: relevance of thimerosal to fetuses, newborns and infants Author information Dórea JG. Faculty of Health Sciences Universidade de Brasilia 70919-970 Brasilia, DF, Brazil jg.dorea@gmail.com Abstract This review explores the different aspects of constitutional factors in early life that modulate toxicokinetics and toxicodynamics of low-dose mercury resulting from acute ethylmercury (etHg) exposure in Thimerosal-containing vaccines (TCV). Major databases were searched for human and experimental studies that addressed issues related to early life exposure to TCV. It can be concluded that: a) mercury load in fetuses, neonates, and infants resulting from TCVs remains in blood of neonates and infants at sufficient concentration and for enough time to penetrate the brain and to exert a neurologic impact and a probable influence on neurodevelopment of susceptible infants; b) etHg metabolism related to neurodevelopmental delays has been demonstrated experimentally and observed in population studies; c) unlike chronic Hg exposure during pregnancy, neurodevelopmental effects caused by acute (repeated/cumulative) early life exposure to TCV-etHg remain unrecognized; and d) the uncertainty surrounding low-dose toxicity of etHg is challenging but recent evidence indicates that avoiding cumulative insults by alkyl-mercury forms (which include Thimerosal) is warranted. It is important to a) maintain trust in vaccines while reinforcing current public health policies to abate mercury exposure in infancy; b) generally support WHO policies that recommend vaccination to prevent and control existing and impending infectious diseases; and c) not confuse the ‘need’ to use a specific ‘product’ (TCV) by accepting as ‘innocuous’ (or without consequences) the presence of a proven ‘toxic alkyl-mercury’ (etHg) at levels that have not been proven to be toxicologically safe. http://www.ncbi.nlm.nih.gov/pubmed/?term=23992327 “... mercury load in fetuses, neonates, and infants resulting from TCVs remains in blood of neonates and infants at sufficient concentration and for enough time to penetrate the brain and to exert a neurologic impact and a probable influence on neurodevelopment of susceptible infants ...” Toxicology And Applied Pharmacology • February 2014 The retention time of inorganic mercury in the brain a systematic review of the evidence Author information Rooney JP. Academic Unit of Neurology Trinity Biomedical Sciences Institute Trinity College, 152-160 Pearse Street Dublin 2, Ireland jrooney@rcsi.ie Abstract Reports from human case studies indicate a half-life for inorganic mercury in the brain in the order of years-contradicting older radioisotope studies that estimated half-lives in the order of weeks to months in duration. This study systematically reviews available evidence on the retention time of inorganic mercury in humans and primates to better understand this conflicting evidence. A broad search strategy was used to capture 16,539 abstracts on the Pubmed database. Abstracts were screened to include only study types containing relevant information. 131 studies of interest were identified. Only 1 primate study made a numeric estimate for the half-life of inorganic mercury (227-540 days). Eighteen human mercury poisoning cases were followed up long term including autopsy. Brain inorganic mercury concentrations at death were consistent with a half-life of several years or longer. 5 radionucleotide studies were found, one of which estimated head half-life (21 days). This estimate has sometimes been misinterpreted to be equivalent to brain half-life-which ignores several confounding factors including limited radioactive half-life and radioactive decay from surrounding tissues including circulating blood. No autopsy cohort study estimated a half-life for inorganic mercury, although some noted bioaccumulation of brain mercury with age. Modelling studies provided some extreme estimates (69 days vs 22 years). Estimates from modelling studies appear sensitive to model assumptions, however predications based on a long half-life (27.4 years) are consistent with autopsy findings. In summary, shorter estimates of half-life are not supported by evidence from animal studies, human case studies, or modelling studies based on appropriate assumptions. Evidence from such studies point to a half-life of inorganic mercury in human brains of several years to several decades. This finding carries important implications for pharmcokinetic modelling of mercury and potentially for the regulatory toxicology of mercury. http://www.ncbi.nlm.nih.gov/pubmed/24368178 “Evidence from such studies point to a half-life of inorganic mercury in human brains of several years to several decades. This finding carries important implications for pharmcokinetic modelling of mercury and potentially for the regulatory toxicology of mercury.” “These and other studies suggest that susceptibility to mercury toxicity differs among individuals based on multiple genes, not all of which have been identified. These studies further suggest that the levels of exposure to mercury vapor from dental amalgams may be unsafe for certain subpopulations.” Biometals • February 2014 New science challenges old notion that mercury dental amalgam is safe Author information Homme KG1, Kern JK, Haley BE, Geier DA, King PG, Sykes LK, Geier MR. International Academy of Oral Medicine and Toxicology Champions Gate, FL, 33896, USA khomme@sbcglobal.net Abstract Mercury dental amalgam has a long history of ostensibly safe use despite its continuous release of mercury vapor. Two key studies known as the Children’s Amalgam Trials are widely cited as evidence of safety. However, four recent reanalyses of one of these trials now suggest harm, particularly to boys with common genetic variants. These and other studies suggest that susceptibility to mercury toxicity differs among individuals based on multiple genes, not all of which have been identified. These studies further suggest that the levels of exposure to mercury vapor from dental amalgams may be unsafe for certain subpopulations. Moreover, a simple comparison of typical exposures versus regulatory safety standards suggests that many people receive unsafe exposures. Chronic mercury toxicity is especially insidious because symptoms are variable and nonspecific, diagnostic tests are often misunderstood, and treatments are speculative at best. Throughout the world, efforts are underway to phase down or eliminate the use of mercury dental amalgam. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3905169/ Current Neuropharmacology • March 2014 Redox Regulation and the Autistic Spectrum: Role of Tryptophan Catabolites, Immuno-inflammation, Autoimmunity and the Amygdala Author information Anderson G1, Maes M2. 1. CRC, Rm:30, 57 Laurel Street, Glasgow, Scotland 2. Department of Psychiatry, Chulalongkorn University, Bangkok, Thailand Department of Psychiatry, Deakin University, Geelong, Australia Abstract The autistic spectrum disorders (ASD) form a set of multi-faceted disorders with significant genetic, epigenetic and environmental determinants. Oxidative and nitrosative stress (O&NS), immuno-inflammatory pathways, mitochondrial dysfunction and dysregulation of the tryptophan catabolite (TRYCATs) pathway play significant interactive roles in driving the early developmental etiology and course of ASD. O&NS interactions with immuno-inflammatory pathways mediate their effects centrally via the regulation of astrocyte and microglia responses, including regional variations in TRYCATs produced. Here we review the nature of these interactions and propose an early developmental model whereby different ASD genetic susceptibilities interact with environmental and epigenetic processes, resulting in glia biasing the patterning of central interarea interactions. A role for decreased local melatonin and N-acetylserotonin production by immune and glia cells may be a significant treatment target. Perinatal Mercury Maternal prenatal mercury levels have sharply increased in recent decades, with foetal cord blood levels being significantly increased versus maternal levels [61,62]. This suggests that prenatal mercury, which can induce many of the changes evident in ASD, including increased O&NS and immuno-inflammation, as well as decreased endogenous anti-oxidants and mitochondrial functioning, may play a significant role in the etiology of ASD. As to whether mercury interacts with the consequences of prenatal infection in the offspring is unknown, although not unlikely given that mercury significantly modulates murine viral immune response [63,64] and viral infection increases brain mercury levels [65]. SNPs in genes involved in mercury regulation associate with ASD [66]. It also requires testing as to whether mercury has any impact on the development of foetal gamma-delta (∼∼) T cells and prenatal epigenetic regulation. http://www.ncbi.nlm.nih.gov/pubmed/?term=24669209 “Maternal prenatal mercury levels have sharply increased in recent decades, with foetal cord blood levels being significantly increased versus maternal levels. This suggests that prenatal mercury, which can induce many of the changes evident in Autistic Spectrum Disorder, including increased O&NS and immuno-inflammation, as well as decreased endogenous anti-oxidants and mitochondrial functioning, may play a significant role in the etiology of Autistic Spectrum Disorder.” PLoS One • April 2014 Suppression by Thimerosal of Ex-Vivo CD4+ T Cell Response to Influenza Vaccine and Induction of Apoptosis in Primary Memory T Cells Emily Loison,1 Béatrice Poirier-Beaudouin,1 Valérie Seffer,1 Audrey Paoletti,2 Vered Abitbol,3 Eric Tartour,4 Odile Launay,5 and Marie-Lise Gougeon1,* Jon C.D. Houtman, Editor 1. Antiviral Immunity Biotherapy and Vaccine Unit, Institut Pasteur, Paris, France 2. Inserm U1030, Institut Gustave Roussy, Villejuif, France 3. Gastroenterology Department, Hôpital Cochin, AP-HP, Paris, France 4. Inserm U970, Université Paris Descartes, PARCC/HEGP, Paris, France 5. Centre d’Investigation Clinique BT-505, Hôpital Cochin, AP-HP, Paris, France University of Iowa, United States of America Competing Interests “Overall these results underline the proapoptotic effect of thimerosal on primary human lymphocytes at concentrations 100 times less to those CrossJect provided the academic research/private research partnership to fund a CIFRE fellowship used in this study. There are no patents, products in development or marketed products to declare. This does not alter the authors’ adherence to all the PLOS ONE policies on sharing data and materials. contained in the multidose vaccine, and Abstract preservative on T-cell proliferation and Thimerosal is a preservative used widely in vaccine formulations to prevent bacterial and fungal contamination in multidose vials of vaccine. Thimerosal was included in the multidose non-adjuvanted pandemic 2009 H1N1 vaccine Panenza. In the context of the analysis of the ex-vivo T cell responses directed against influenza vaccine, we discovered the in vitro toxicity Panenza, due to its content in thimerosal. Because thimerosal may skew the immune response to vaccines, we investigated in detail the ex-vivo effects of thimerosal on the fate and functions of T cells in response to TCR ligation. We report that ex-vivo exposure of quiescent or TCR-activated primary human T cells to thimerosal induced a dose-dependent apoptotic cell death associated with depolarization of mitochondrial membrane, generation of reactive oxygen species, cytochrome c release from the mitochondria and caspase-3 activation. Moreover, exposure to non-toxic concentrations of thimerosal induced cell cycle arrest in G0/G1 phase of TCR-activated T cells, and inhibition of the release of proinflammatory cytokines such as IFN gamma, IL-1 beta, TNF alpha, IL-2, as well as the chemokine MCP1. No shift towards Th2 or Th17 cells was detected. Overall these results underline the proapoptotic effect of thimerosal on primary human lymphocytes at concentrations 100 times less to those contained in the multidose vaccine, and they reveal the inhibitory effect of this preservative on T-cell proliferation and functions at nanomolar concentrations. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3972181/ they reveal the inhibitory effect of this functions at nanomolar concentrations.” Environmental Toxicology And Chemistry • June 2014 Ecogenetics of mercury: from genetic polymorphisms and epigenetics to risk assessment and decision-making Author information Basu N1, Goodrich JM, Head J. Department of Environmental Health Sciences University of Michigan School of Public Health Ann Arbor, Michigan, USA Faculty of Agricultural and Environmental Sciences McGill University, Montreal, Quebec, Canada Abstract The risk assessment of mercury (Hg), in both humans and wildlife, is made challenging by great variability in exposure and health effects. Although disease risk arises following complex interactions between genetic (“nature”) and environmental (“nurture”) factors, most Hg studies thus far have focused solely on environmental factors. In recent years, ecogenetic-based studies have emerged and have started to document genetic and epigenetic factors that may indeed influence the toxicokinetics or toxicodynamics of Hg. The present study reviews these studies and discusses their utility in terms of Hg risk assessment, management, and policy and offers perspectives on fruitful areas for future research. In brief, epidemiological studies on populations exposed to inorganic Hg (e.g., dentists and miners) or methylmercury (e.g., fish consumers) are showing that polymorphisms in a number of environmentally responsive genes can explain variations in Hg biomarker values and health outcomes. Studies on mammals (wildlife, humans, rodents) are showing Hg exposures to be related to epigenetic marks such as DNA methylation. Such findings are beginning to increase understanding of the mechanisms of action of Hg, and in doing so they may help identify candidate biomarkers and pinpoint susceptible groups or life stages. Furthermore, they may help refine uncertainty factors and thus lead to more accurate risk assessments and improved decision-making. http://www.ncbi.nlm.nih.gov/pubmed/24038486 “In recent years, ecogenetic-based studies have emerged and have started to document genetic and epigenetic factors that may indeed influence the toxicokinetics or toxicodynamics of mercury.” Human Vaccines & Immunotherapeutics • June 2014 Thimerosal compromises human dendritic cell maturation, IL-12 production, chemokine release, and T-helper polarization by Emily Loison & Marie-Lise Gougeon Abstract In conclusion, our study indicates that ex-vivo exposure of human immature dendritic cells to very low nontoxic concentrations of thimerosal alters the LPS-induced maturation process and dampens their proinflammatory response, in particular the production of the T-helper polarizing cytokine IL-12. Moreover, thimerosal exposure of DCs corrupts their interaction with naïve CD4+ T cells, leading to a decreased production of IFN-∼ IP10 and GM-CSF and increased levels of IL-8, IL-9, and MIP-1∼. Today, except for some flu vaccines in multi-dose vials, no recommended childhood vaccines contain thimerosal as a preservative. It must be stressed that the toxicity and immunomodulatory effects of thimerosal that we report ex-vivo on human monocytederived DCs may occur in vivo and induce an alteration of the immune response to the vaccine. These observations highlight the need to use this preservative with caution and avoid it if possible. Full Report https://app.box.com/s/0dg5ksp3f377qes3m5qsp16rl1gxws8l “These observations highlight the need to use this preservative with caution and avoid it if possible.” “Our results indicate that higher dose of neonatal thimerosal-mercury is capable of inducing long-lasting substantial dysregulation of neurodevelopment, synaptic function, and endocrine system, which could be the causal involvements of autistic-like behavior in mice.” Toxicology Science • June 2014 Transcriptomic analyses of neurotoxic effects in mouse brain after intermittent neonatal administration of thimerosal Author information Li X1, Qu F, Xie W, Wang F, Liu H, Song S, Chen T, Zhang Y, Zhu S, Wang Y, Guo C, Tang TS. State Key Laboratory of Biomembrane and Membrane Biotechnology Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China Abstract Thimerosal is a vaccine antimicrobial preservative which has long been suspected an iatrogenic factor possibly contributing to neurodevelopmental disorders including autism. The association between infant vaccine thimerosal exposure and autism remains an open question. Although thimerosal has been removed from mandatory childhood vaccines in the United States, thimerosal-preserved vaccines are still widely used outside of the United States especially in developing countries. Notably, thimerosal-containing vaccines are being given to the newborns within the first 12-24 h after birth in some countries. To examine the possible neurotoxic effects of early neonatal exposure to a higher level of thimerosal, FVB mice were subcutaneously injected with thimerosal-mercury at a dose which is 20× higher than that used for regular Chinese infant immunization during the first 4 months of life. Thimerosal-treated mice exhibited neural development delay, social interaction deficiency, and inclination of depression. Apparent neuropathological changes were also observed in adult mice neonatally treated with thimerosal. High-throughput RNA sequencing of autistic-behaved mice brains revealed the alternation of a number of canonical pathways involving neuronal development, neuronal synaptic function, and the dysregulation of endocrine system. Intriguingly, the elevation of anterior pituitary secreting hormones occurred exclusively in male but not in female thimerosal-treated mice, demonstrating for the first time the gender bias of thimerosal-mercury toxicity with regard to endocrine system. Our results indicate that higher dose of neonatal thimerosal-mercury (20× higher than that used in human) is capable of inducing long-lasting substantial dysregulation of neurodevelopment, synaptic function, and endocrine system, which could be the causal involvements of autistic-like behavior in mice. http://www.ncbi.nlm.nih.gov/pubmed/24675092 Environmental Toxicology And Chemistry • June 2014 Ecogenetics of mercury: From genetic polymorphisms and epigenetics to risk assessment and decision-making Author Information Niladri Basu, Jaclyn M. Goodrich and Jessica Head Cooperative Institute for Limnology and Ecosystems Research School of Natural Resources and Environment, University of Michigan Ann Arbor, Michigan, USA Abstract The risk assessment of mercury (Hg), in both humans and wildlife, is made challenging by great variability in exposure and health effects. Although disease risk arises following complex interactions between genetic (“nature”) and environmental (“nurture”) factors, most Hg studies thus far have focused solely on environmental factors. In recent years, ecogenetic-based studies have emerged and have started to document genetic and epigenetic factors that may indeed influence the toxicokinetics or toxicodynamics of Hg. The present study reviews these studies and discusses their utility in terms of Hg risk assessment, management, and policy and offers perspectives on fruitful areas for future research. In brief, epidemiological studies on populations exposed to inorganic Hg (e.g., dentists and miners) or methylmercury (e.g., fish consumers) are showing that polymorphisms in a number of environmentally responsive genes can explain variations in Hg biomarker values and health outcomes. Studies on mammals (wildlife, humans, rodents) are showing Hg exposures to be related to epigenetic marks such as DNA methylation. Such findings are beginning to increase understanding of the mechanisms of action of Hg, and in doing so they may help identify candidate biomarkers and pinpoint susceptible groups or life stages. Furthermore, they may help refine uncertainty factors and thus lead to more accurate risk assessments and improved decision-making. http://onlinelibrary.wiley.com/doi/10.1002/etc.2375/abstract “In brief, epidemiological studies on populations exposed to inorganic mercury (e.g., dentists and miners) or methylmercury (e.g., fish consumers) are showing that polymorphisms in a number of environmentally responsive genes can explain variations in mercury biomarker values and health outcomes.” [polymorphosms explain why some individuals injected with an aluminum containing vaccine will become autistic and others will not. Polymorphism is the genetic variant] Pediatric Neurology • July 2014 Effect of low-level prenatal mercury exposure on neonate neurobehavioral development in China Author information Wu J1, Ying T2, Shen Z2, Wang H2. Zhoushan Women’s & Children’s Health Hospital Zhoushan, Zhejiang, China Abstract BACKGROUND: This study aimed to assess the effects of low-level prenatal mercury exposure on neonate neurobehavioral development in China. METHODS: In total, 418 mother-neonate pairs were included in the study. Maternal urine, hair, and blood samples and cord blood samples were used to document prenatal exposure to mercury. The Neonatal Behavioral Neurological Assessment was used to estimate neurobehavioral development in the neonates at 3 days of age. RESULTS: Total mercury level was significantly higher in cord blood than that in maternal blood. A strong correlation was found between total mercury levels in maternal blood and those in cord blood (r = 0.7431; P < 0.0001). Trend analysis revealed that mothers who consumed more fish had higher blood and cord blood mercury levels (all P < 0.0001). Significant differences were also found between male and female cord blood mercury levels among groups with different fish consumption frequencies (all P < 0.0001). Cord blood mercury level was significantly associated with total Neonatal Behavioral Neurological Assessment scores (ß = 0.03; standard error = 0.01; P = 0.0409), passive muscle tone (odds ratio = 1.07; 95% confidence interval = 1.12-1.13; P = 0.0071), and active muscle tone (odds ratio = 1.06; 95% confidence interval = 1.01-1.11; P = 0.0170) scores after adjustment, respectively. CONCLUSIONS: Neonatal neurodevelopment was associated with prenatal exposure to mercury. Women with high mercury levels should avoid intake seafood excessively during pregnancy. Long-term effects of exposure to mercury on childhood development need to be further explored. Full Report http://www.pedneur.com/article/S0887-8994(14)00195-7/fulltext “Neonatal neurodevelopment was associated with prenatal exposure to mercury. Women with high mercury levels should avoid intake seafood excessively during pregnancy.” International Journal Of Environmental Research And Public Health • September 2014 A Dose-Response Relationship between Organic Mercury Exposure from Thimerosal-Containing Vaccines and Neurodevelopmental Disorders David A. Geier,1 Brian S. Hooker,2 Janet K. Kern,1,3 Paul G. King,4 Lisa K. Sykes,4 and Mark R. Geier1 1. Institute of Chronic Illnesses, Inc., 14 Redgate Ct., Silver Spring, MD 20905, USA 2. Department of Biology, Simpson University, 2211 College View Dr., Redding, CA 96003, USA 3. Department of Psychiatry, University of Texas Southwestern Medical Center at Dallas 5353 Harry Hine Blvd., Dallas, TX 75390, USA 4. CoMeD, Inc., 14 Redgate Ct., Silver Spring, MD 20905, USA Abstract A hypothesis testing case-control study evaluated concerns about the toxic effects of organic-mercury (Hg) exposure from thimerosal-containing (49.55% Hg by weight) vaccines on the risk of neurodevelopmental disorders (NDs). Automated medical records were examined to identify cases and controls enrolled from their date-of-birth (1991–2000) in the Vaccine Safety Datalink (VSD) project. ND cases were diagnosed with pervasive developmental disorder (PDD), specific developmental delay, tic disorder or hyperkinetic syndrome of childhood. In addition, putative nonthimerosal-related outcomes of febrile seizure, failure to thrive and cerebral degenerations were examined. The cumulative total dose of Hg exposure from thimerosal-containing hepatitis B vaccine (T-HBV) administered within the first six months of life was calculated. On a per microgram of organic-Hg basis, PDD (odds ratio (OR) = 1.054), specific developmental delay (OR = 1.035), tic disorder (OR = 1.034) and hyperkinetic syndrome of childhood (OR = 1.05) cases were significantly more likely than controls to receive increased organic-Hg exposure. By contrast, none of the non-thimerosal related outcomes were significantly more likely than the controls to have received increased organic-Hg exposure. Routine childhood vaccination may be an important public health tool to reduce infectious disease-associated morbidity/mortality, but the present study significantly associates organic-Hg exposure from T-HBV with an increased risk of an ND diagnosis. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4199012/ “Routine childhood vaccination may be an important public health tool to reduce infectious disease-associated morbidity/mortality, but the present study significantly associates organic-mercury exposure from thimerosal-containing hepatitis B vaccine with an increased risk of an neurodevelopmental disorder diagnosis.” “... the present study supports an association between increasing organic-mercury exposure from Thimerosal-containing childhood vaccines and the subsequent risk of specific delays in development ...” North American Journal Of Medical Science • October 2014 Thimerosal-containing hepatitis B vaccination and the risk for diagnosed specific delays in development in the United States: a case-control study in the vaccine safety datalink Author information Geier DA1, Kern JK2, Hooker BS3, King PG4, Sykes LK4, Geier MR1. 1. Institute of Chronic Illnesses, Inc, Silver Spring, Maryland, USA 2. Institute of Chronic Illnesses, Inc, Silver Spring, Maryland, USA Department of Psychiatry, University of Texas Southwestern Medical Center, Dallas, Texas, USA 3. Biology Department, Simpson University, Redding, California, USA 4. CoMeD, Inc, Silver Spring, Maryland, USA Abstract BACKGROUND Within the first 3 years of life, the brain develops rapidly. Its development is characterized by critical developmental periods for speech, vision, hearing, language, balance, etc.; and alteration in any of the processes occurring in those critical periods can lead to specific delays in development. AIMS The present study evaluated the potential toxic effects of organic-mercury exposure from Thimerosal (49.55% mercury by weight) in childhood vaccines and its hypothesized possible relationship with specific delays in development. MATERIALS AND METHODS A hypothesis testing case-control study was undertaken to evaluate the relationship between exposure to Thimerosal-containing hepatitis B vaccines administered at specific intervals in the first 6 months among cases diagnosed with specific delays in development and controls born between 1991-2000, utilizing data in the Vaccine Safety Datalink database. RESULTS Cases were significantly more likely than controls to have received increased organic-mercury from Thimerosal-containing hepatitis B vaccine administered in the first, second, and sixth month of life. CONCLUSION Though routine childhood vaccination may be an important public health tool to reduce the morbidity and mortality associated with infectious diseases, the present study supports an association between increasing organic-mercury exposure from Thimerosal-containing childhood vaccines and the subsequent risk of specific delays in development among males and females. http://www.ncbi.nlm.nih.gov/pubmed/25489565 Indian Journal Of Medical Ethics • October 2014 Thimerosal as discrimination: vaccine disparity in the UN Minamata Convention on mercury Author information Sykes LK1, Geier DA2, King PG1, Kern JK3, Haley BE1, Chaigneau CG1, Megson MN4, Love JM5, Reeves RE1, Geier MR2. 1. CoMeD, Inc, Silver Spring, MD USA 2. CoMeD, Inc, Silver Spring, MD; Institute of Chronic Illnesses, Inc, Silver Spring, MD USA 3. Institute of Chronic Illnesses, Inc, Silver Spring, MD USA 4. Pediatric and Adolescent Ability Center, Richmond, VA USA 5. CoMeD, Inc, Silver Spring, MD USA Abstract When addressing toxins, one unmistakable parallel exists between biology and politics: developing children and developing nations are those most vulnerable to toxic exposures. This disturbing parallel is the subject of this critical review, which examines the use and distribution of the mercury (Hg)based compound, thimerosal, in vaccines. Developed in 1927, thimerosal is 49.55% Hg by weight and breaks down in the body into ethyl-Hg chloride, ethyl-Hg hydroxide and sodium thiosalicylate. Since the early 1930s, there has been evidence indicating that thimerosal poses a hazard to the health of human beings and is ineffective as an antimicrobial agent. While children in the developed and predominantly western nations receive doses of mostly no-thimerosal and reduced-thimerosal vaccines, children in the developing nations receive many doses of several unreduced thimerosal-containing vaccines (TCVs). Thus, thimerosal has continued to be a part of the global vaccine supply and its acceptability as a component of vaccine formulations remained unchallenged until 2010, when the United Nations (UN), through the UN Environment Programme, began negotiations to write the global, legally binding Minamata Convention on Hg. During the negotiations, TCVs were dropped from the list of Hg-containing products to be regulated. Consequently, a double standard in vaccine safety, which previously existed due to ignorance and economic reasons, has now been institutionalised as global policy. Ultimately, the Minamata Convention on Hg has sanctioned the inequitable distribution of thimerosal by specifically exempting TCVs from regulation, condoning a two-tier standard of vaccine safety: a predominantly no-thimerosal and reduced-thimerosal standard for developed nations and a predominantly thimerosal-containing one for developing nations. This disparity must now be evaluated urgently as a potential form of institutionalised discrimination. http://www.ncbi.nlm.nih.gov/pubmed/?term=25101548 “While children in the developed and predominantly western nations receive doses of mostly no-thimerosal and reduced-thimerosal vaccines, children in the developing nations receive many doses of several unreduced thimerosal-containing vaccines (TCVs).” “... the preponderance of evidence suggests that mercury exposure from dental amalgams may cause or contribute to many chronic conditions.” Neuro Endocrinology Letters • 2014 Evidence supporting a link between dental amalgams and chronic illness, fatigue, depression, anxiety, and suicide Author information Kern JK1, Geier DA1, Bjørklund G2, King PG3, Homme KG4, Haley BE5, Sykes LK3, Geier MR1. 1. Institute of Chronic Illnesses, Inc., Silver Spring, MD, USA 2. Council for Nutritional and Environmental Medicine, Mo i Rana, Norway 3. CoMeD, Inc., Silver Spring, MD, USA 4. International Academy of Oral Medicine and Toxicology, ChampionsGate, FL, USA 5. University of Kentucky, Lexington, KY, USA Abstract The purpose of this review is to examine the evidence for a relationship between mercury (Hg) exposure from dental amalgams and certain idiopathic chronic illnesses--chronic fatigue syndrome (CFS), fibromyalgia (FM), depression, anxiety, and suicide. Dental amalgam is a commonly used dental restorative material that contains approximately 50% elemental mercury (Hg0) by weight and releases Hg0 vapor. Studies have shown that chronic Hg exposure from various sources including dental amalgams is associated with numerous health complaints, including fatigue, anxiety, and depression--and these are among the main symptoms that are associated with CFS and FM. In addition, several studies have shown that the removal of amalgams is associated with improvement in these symptoms. Although the issue of amalgam safety is still under debate, the preponderance of evidence suggests that Hg exposure from dental amalgams may cause or contribute to many chronic conditions. Thus, consideration of Hg toxicity may be central to the effective clinical investigation of many chronic illnesses, particularly those involving fatigue and depression. http://www.ncbi.nlm.nih.gov/pubmed/25617876 Reviews Of Environmental Contamination And Toxicology • 2014 Mercury toxicity and neurodegenerative effects Author information Carocci A1, Rovito N, Sinicropi MS, Genchi G. Dipartimento di Farmacia-Scienze del Farmaco Università degli Studi di Bari “A. Moro” Bari, 70125, Italia Abstract Mercury is among the most toxic heavy metals and has no known physiological role in humans. Three forms of mercury exist: elemental, inorganic and organic. Mercury has been used by man since ancient times. Among the earliest were the Chinese and Romans, who employed cinnabar (mercury sulfide) as a red dye in ink (Clarkson et al. 2007). Mercury has also been used to purify gold and silver minerals by forming amalgams. This is a hazardous practice, but is still widespread in Brazil’s Amazon basin, in Laos and in Venezuela, where tens of thousands of miners are engaged in local mining activities to find and purify gold or silver. Mercury compounds were long used to treat syphilis and the element is still used as an antiseptic,as a medicinal preservative and as a fungicide. Dental amalgams, which contain about 50% mercury, have been used to repair dental caries in the U.S. since 1856.Mercury still exists in many common household products around the world.Examples are: thermometers, barometers, batteries, and light bulbs (Swain et al.2007). In small amounts, some organo mercury-compounds (e.g., ethylmercury tiosalicylate(thimerosal) and phenylmercury nitrate) are used as preservatives in some medicines and vaccines (Ballet al. 2001).Each mercury form has its own toxicity profile. Exposure to Hg0 vapor and MeHg produce symptoms in CNS, whereas, the kidney is the target organ when exposures to the mono- and di-valent salts of mercury (Hg+ and Hg++, respectively)occur. Chronic exposure to inorganic mercury produces stomatitis, erethism and tremors. Chronic MeHg exposure induced symptoms similar to those observed in ALS, such as the early onset of hind limb weakness (Johnson and Atchison 2009).Among the organic mercury compounds, MeHg is the most biologically available and toxic (Scheuhammer et al. 2007). MeHg is neurotoxic, reaching high levels of accumulation in the CNS; it can impair physiological function by disrupting endocrine glands (Tan et al. 2009).The most important mechanism by which mercury causes toxicity appears to bemitochondrial damage via depletion of GSH (Nicole et al. 1998), coupled with binding to thiol groups (-SH), which generates free radicals. Mercury has a high affinity for thiol groups (-SH) and seleno groups (-SeH) that are present in amino acids as cysteine and N-acetyl cysteine, lipoic acid, proteins, and enzymes. N-acetylcysteine and cysteine are precursors for the biosynthesis of GSH, which is among the most powerful intracellular antioxidants available to protect against oxidative stress and inflammation.Mercury and methylmercury induce mitochondrial dysfunction, which reduces ATP synthesis and increases lipid, protein and DNA peroxidation. The content of metallothioneines, GSH, selenium and fish high in omega-3 fatty acids appear to be strongly related with degree of inorganic and organic mercury toxicity, and with the protective detoxifying mechanisms in humans. In conclusion, depletion of GSH, breakage of mitochondria, increased lipid peroxidation, and oxidation of proteins and DNA in the brain, induced by mercury and his salts, appear to be important factors in conditions such as ALS and AD (Bains and Shaw 1997; Nicole et al. 1998;Spencer et al. 1998; Alberti et al. 1999). http://www.ncbi.nlm.nih.gov/pubmed/24515807 “In conclusion, depletion of GSH, breakage of mitochondria, increased lipid peroxidation, and oxidation of proteins and DNA in the brain, induced by mercury and his salts, appear to be important factors in conditions such as Amyotrophic Lateral Sclerosis and Alzheimers Disease ...” “These findings suggest that the epidemiological link between environmental mercury exposure and an increased risk of developing autism may be mediated through mitochondrial dysfunction ...” Journal of Toxicology • January 2015 Increased Susceptibility to Ethylmercury-Induced Mitochondrial Dysfunction in a Subset of Autism Lymphoblastoid Cell Lines Shannon Rose, Rebecca Wynne, Richard E. Frye, Stepan Melnyk, and S. Jill James Department of Pediatrics, University of Arkansas for Medical Sciences Arkansas Children’s Hospital Research Institute 13 Children’s Way, Slot 512-41B Little Rock, AR 72202, USA Abstract The association of autism spectrum disorders with oxidative stress, redox imbalance, and mitochondrial dysfunction has become increasingly recognized. In this study, extracellular flux analysis was used to compare mitochondrial respiration in lymphoblastoid cell lines (LCLs) from individuals with autism and unaffected controls exposed to ethylmercury, an environmental toxin known to deplete glutathione and induce oxidative stress and mitochondrial dysfunction. We also tested whether pretreating the autism LCLs with N-acetyl cysteine (NAC) to increase glutathione concentrations conferred protection from ethylmercury. Examination of 16 autism/control LCL pairs revealed that a subgroup (31%) of autism LCLs exhibited a greater reduction in ATP-linked respiration, maximal respiratory capacity, and reserve capacity when exposed to ethylmercury, compared to control LCLs. These respiratory parameters were significantly elevated at baseline in the ethylmercury-sensitive autism subgroup as compared to control LCLs. NAC pretreatment of the sensitive subgroup reduced (normalized) baseline respiratory parameters and blunted the exaggerated ethylmercury-induced reserve capacity depletion. These findings suggest that the epidemiological link between environmental mercury exposure and an increased risk of developing autism may be mediated through mitochondrial dysfunction and support the notion that a subset of individuals with autism may be vulnerable to environmental influences with detrimental effects on development through mitochondrial dysfunction. http://www.hindawi.com/journals/jt/2015/573701/ “... the present study provides new epidemiological evidence of a significant relationship between increasing organic ethyl mercury exposure from Thimerosal-containing vaccines and the subsequent risk of pervasive developmental disorder diagnosis ...” Biological Trace Element Research • February 2015 A case-control study evaluating the relationship between thimerosal-containing haemophilus influenzae type b vaccine administration and the risk for a pervasive developmental disorder diagnosis in the United States Author information Geier DA1, Kern JK, King PG, Sykes LK, Geier MR. The Institute of Chronic Illnesses, Inc, 14 Redgate Ct, Silver Spring, MD, 20905, USA Abstract Thimerosal is an organic mercury (Hg)-containing compound (49.55 % Hg by weight) historically added to many multi-dose vials of vaccine as a preservative. A hypothesis testing case-control study evaluated automated medical records in the Vaccine Safety Datalink (VSD) for organic Hg exposure from Thimerosal in Haemophilus influenzae type b (Hib)-containing vaccines administered at specific times within the first 15 months of life among subjects diagnosed with pervasive developmental disorder (PDD) (n = 534) in comparison to controls. The generally accepted biologically non-plausible linkage between Thimerosal exposure and subsequent diagnosis of febrile seizure (n = 5886) was examined as a control outcome. Cases diagnosed with PDD received significantly more organic Hg within the first 6 months of life (odds ratio (OR) = 1.97, p < 0.001) and first 15 months of life (OR = 3.94, p < 0.0001) than controls, whereas cases diagnosed with febrile seizure were no more likely than controls to have received increased organic Hg. On a per microgram of organic Hg basis, cases diagnosed with a PDD in comparison to controls were at significantly greater odds (OR = 1.0197, p < 0.0001) of receiving increasing organic Hg exposure within the first 15 months of life, whereas cases diagnosed febrile seizure were no more likely than controls (OR = 0.999, p > 0.20) to have received increasing organic Hg exposure within the first 15 months of life. Routine childhood vaccination is an important public health tool to reduce the morbidity and mortality associated with infectious diseases, but the present study provides new epidemiological evidence of a significant relationship between increasing organic Hg exposure from Thimerosal-containing vaccines and the subsequent risk of PDD diagnosis in males and females. http://www.ncbi.nlm.nih.gov/pubmed/25382662 Clinica Chimica Acta • April 2015 Thimerosal: clinical, epidemiologic and biochemical studies Author information Geier DA1, King PG2, Hooker BS3, Dórea JG4, Kern JK5, Sykes LK6, Geier MR7. 1. Institute of Chronic Illnesses, Inc., 14 Redgate Ct., Silver Spring, MD 20905, USA 2. CoMeD, Inc., 14 Redgate Ct., Silver Spring, MD 20905, USA 3. Biology Department, Simpson University, 2211 College View Drive, Redding, CA 96001, USA 4. Health Sciences, Universidade de Brasilia, 70919-970 Brasilia, DF, Brazil. Electronic address: jg.dorea@gmail.com. 5. Institute of Chronic Illnesses, Inc., 14 Redgate Ct., Silver Spring, MD 20905, USA. Electronic address: jkern@dfwair.net. 6. CoMeD, Inc., 14 Redgate Ct., Silver Spring, MD 20905, USA. Electronic address: syklone5@verizon.net. 7. Institute of Chronic Illnesses, Inc., 14 Redgate Ct., Silver Spring, MD 20905, USA. Electronic address: mgeier@comcast.net Abstract INTRODUCTION Thimerosal (or Thiomersal) is a trade name for an organomercurial compound (sodium ethyl-mercury (Hg) thiosalicylate) that is 49.55% Hg by weight, which rapidly decomposes in aqueous saline solutions into ethyl-Hg hydroxide and ethyl-Hg chloride. Developed in 1927, it has been and is still being used as a preservative in some cosmetics, topical pharmaceuticals, and biological drug products, including vaccines. Concerns have been voiced about its use because it is toxic to human cells. Although it is banned in several countries, it continues to be added to some vaccines in the United States and many vaccines in the developing world. DISCUSSION This critical review focuses on the clinical, epidemiological, and biochemical studies of adverse effects from Thimerosal in developing humans. This review will include research that examines fetal, infant, and childhood death; birth defects; neurodevelopmental testing deficits in children; and neurodevelopmental disorders (attention deficit/hyperactivity disorder, autism spectrum disorder, tic disorder, and specific developmental delays). The review will also look at the research that examined the outcomes of acute accidental ethyl-Hg poisoning in humans. The studies that examine the underlying biochemical insights into the neuronal cellular damage will also be explored. CONCLUSION The culmination of the research that examines the effects of Thimerosal in humans indicates that it is a poison at minute levels with a plethora of deleterious consequences, even at the levels currently administered in vaccines. http://www.ncbi.nlm.nih.gov/pubmed/?term=25708367 “The culmination of the research that examines the effects of Thimerosal in humans indicates that it is a poison at minute levels with a plethora of deleterious consequences, even at the levels currently administered in vaccines.” “During the decade in which Thimerosal-containing hepatitis B vaccines were routinely recommended and administered to US infants, an estimated 0.5-1 million additional US children were diagnosed with specific delays in development as a consequence of 25μg or 37.5μg organic mercury from Thimerosal-containing hepatitis B vaccines ... The resulting lifetime costs to the United States may exceed $1 trillion.” Journal Of Epidemiology And Global Health • July 2015 A longitudinal cohort study of the relationship between Thimerosal-containing hepatitis B vaccination and specific delays in development in the United States: Assessment of attributable risk and lifetime care costs Author information Geier DA1, Kern JK2, Hooker BS3, King PG4, Sykes LK4, Geier MR1. 1. Institute of Chronic Illnesses, Inc, Silver Spring, MD, USA. 2. Institute of Chronic Illnesses, Inc, Silver Spring, MD, USA. Electronic address: jkern@dfwair.net. 3 .Biology Department, Simpson University, Redding, CA, USA. 4. CoMeD, Inc, Silver Spring, MD, USA. Abstract Epidemiological evidence suggests a link between mercury (Hg) exposure from Thimerosal-containing vaccines and specific delays in development. A hypothesis-testing longitudinal cohort study (n=49,835) using medical records in the Vaccine Safety Datalink (VSD) was undertaken to evaluate the relationship between exposure to Hg from Thimerosal-containing hepatitis B vaccines (T-HBVs) administered at specific intervals in the first 6months of life and specific delays in development [International Classification of Disease, 9th revision (ICD-9): 315.xx] among children born between 1991 and 1994 and continuously enrolled from birth for at least 5.81years. Infants receiving increased Hg doses from T-HBVs administered within the first month, the first 2 months, and the first 6 months of life were significantly more likely to be diagnosed with specific delays in development than infants receiving no Hg doses from T-HBVs. During the decade in which T-HBVs were routinely recommended and administered to US infants (1991-2001), an estimated 0.5-1 million additional US children were diagnosed with specific delays in development as a consequence of 25μg or 37.5μg organic Hg from T-HBVs administered within the first 6 months of life. The resulting lifetime costs to the United States may exceed $1 trillion. Full Report http://www.sciencedirect.com/science/article/pii/S2210600615000647 [an epidemic with a multi-trillion-dollar cost] Science And Engineering Ethics • October 2015 Systematic Assessment of Research on Autism Spectrum Disorder and Mercury Reveals Conflicts of Interest and the Need for Transparency in Autism Research Author information Kern JK1, Geier DA2, Deth RC3, Sykes LK4, Hooker BS5, Love JM6, Bjørklund G7, Chaigneau CG8, Haley BE9, Geier MR10. 1. Institute of Chronic Illnesses, Inc., 14 Redgate Court, Silver Spring, MD, 20905 2. Institute of Chronic Illnesses, Inc., 14 Redgate Court, Silver Spring, MD, 20905 3. Nova Southeastern University, Fort Lauderdale, FL, USA. rdeth@nova.edu. 4. CoMeD, Inc., Silver Spring, MD, USA. syklone5@verizon.net. 5. Simpson University, Redding, CA, USA. bhooker@simpsonu.edu. 6. CoMeD, Inc., Silver Spring, MD, USA. jlove@titushillis.com. 7. Council for Nutritional and Environmental Medicine, Mo i Rana, Norway. bjorklund@conem.org. 8. CoMeD, Inc., Silver Spring, MD, USA. mamadelchinito@gmail.com. 9. University of Kentucky, Lexington, KY, USA. behaley@ctiscience.com. 10. Institute of Chronic Illnesses, Inc., 14 Redgate Court, Silver Spring, MD, 20905 mgeier@comcast.net Abstract Historically, entities with a vested interest in a product that critics have suggested is harmful have consistently used research to back their claims that the product is safe. Prominent examples are: tobacco, lead, bisphenol A, and atrazine. Research literature indicates that about 80-90 % of studies with industry affiliation found no harm from the product, while only about 10-20 % of studies without industry affiliation found no harm. In parallel to other historical debates, recent studies examining a possible relationship between mercury (Hg) exposure and autism spectrum disorder (ASD) show a similar dichotomy. Studies sponsored and supported by industry or entities with an apparent conflict of interest have most often shown no evidence of harm or no “consistent” evidence of harm, while studies without such affiliations report positive evidence of a Hg/autism association. The potentially causal relationship between Hg exposure and ASD differs from other toxic products since there is a broad coalition of entities for whom a conflict of interest arises. These include influential governmental public health entities, the pharmaceutical industry, and even the coal burning industry. This review includes a systematic literature search of original studies on the potential relationship between Hg and ASD from 1999 to date, finding that of the studies with public health and/or industry affiliation, 86 % reported no relationship between Hg and ASD. However, among studies without public health and/or industry affiliation, only 19 % find no relationship between Hg and ASD. The discrepancy in these results suggests a bias indicative of a conflict of interest. http://www.ncbi.nlm.nih.gov/pubmed/26507205 This review includes a systematic literature search of original studies on the potential relationship between Hg [ethyl mercury] and ASD [Autisitic Spectrum Disorder] from 1999 to date, finding that of the studies with public health and/or industry affiliation, 86% reported no relationship between Hg [ethyl mercury] and ASD [Autisitic Spectrum Disorder]. However, among studies without public health and/or industry affiliation, only 19% find no relationship between Hg [ethyl mercury] and ASD [Autisitic Spectrum Disorder]. The discrepancy in these results suggests a bias indicative of a conflict of interest.” Journal of Toxicology • 2015 Increased Susceptibility to Ethylmercury-Induced Mitochondrial Dysfunction in a Subset of Autism Lymphoblastoid Cell Lines Shannon Rose, Rebecca Wynne, Richard E. Frye, Stepan Melnyk, and S. Jill James Department of Pediatrics University of Arkansas for Medical Sciences Arkansas Children’s Hospital Research Institute 13 Children’s Way, Slot 512-41B, Little Rock, AR 72202, USA Abstract The association of autism spectrum disorders with oxidative stress, redox imbalance, and mitochondrial dysfunction has become increasingly recognized. In this study, extracellular flux analysis was used to compare mitochondrial respiration in lymphoblastoid cell lines (LCLs) from individuals with autism and unaffected controls exposed to ethylmercury, an environmental toxin known to deplete glutathione and induce oxidative stress and mitochondrial dysfunction. We also tested whether pretreating the autism LCLs with N-acetyl cysteine (NAC) to increase glutathione concentrations conferred protection from ethylmercury. Examination of 16 autism/control LCL pairs revealed that a subgroup (31%) of autism LCLs exhibited a greater reduction in ATP-linked respiration, maximal respiratory capacity, and reserve capacity when exposed to ethylmercury, compared to control LCLs. These respiratory parameters were significantly elevated at baseline in the ethylmercury-sensitive autism subgroup as compared to control LCLs. NAC pretreatment of the sensitive subgroup reduced (normalized) baseline respiratory parameters and blunted the exaggerated ethylmercury-induced reserve capacity depletion. These findings suggest that the epidemiological link between environmental mercury exposure and an increased risk of developing autism may be mediated through mitochondrial dysfunction and support the notion that a subset of individuals with autism may be vulnerable to environmental influences with detrimental effects on development through mitochondrial dysfunction. http://www.hindawi.com/journals/jt/2015/573701/ “These findings suggest that the epidemiological link between environmental mercury exposure and an increased risk of developing autism may be mediated through mitochondrial dysfunction and support the notion that a subset of individuals with autism may be vulnerable to environmental influences with detrimental effects on development through mitochondrial dysfunction.” Eli Lilly And The History of Thimerosal The following is a summary of the history of thimerosal. It is not a complete list, as there is much more information out there but we hit the high points and we give a good frame of reference for where the discussion of the safety of this product and its relationship to autism and neurodevelopmental disorders should begin. Invented in the 1920’s by Eli Lilly, thimerosal is 49.6% ethlymercury by weight, a neurotoxin known to be more than a hundreds times more lethal to tissue than lead. Eli Lilly’s safety testing of the product consists of a 1930 study of 22 patients dieing from mengiococcal meningitis in an Indiana hospital. Patients are injected with the solutions and followed until their death, which is within days. Because the patients die of meningitis, they are declared to show no adverse reaction to thimerosal and the product is declared safe for use. Thimerosal is subsequently introduced for use in vaccines and in over the counter remedies as a preservative to kill bacteria in the product. When the FDA is created, Thimerosal is grandfathered in and is not subjected to any additional safety testing. The 1930 study remains the only safety testing done on the substance even after being in use for over 75 years. ing a baby, seek the advice of a health professional before using this product.” The FDA orders the withdrawal of over the counter thimerosal containing products within a 6 month period. It does not order removal from vaccines, but recommends that the issue be studied and that the incidence of neurological problems in unvaccinated populations like the Amish be compared to the vaccinated population. [22 years later no such study has yet been done. On July 19, 2005 Dr. Julie Gerberding, head of the CDC says that such a study would be difficult to undertake because of genetic confounders. This seems contrary to the scientific process because if indeed such a study is done and it is found that the Amish have a lower incidence of neurodevelopmental disorders, the next step would be to undertake genetic studies to see if their genes differ dramatically from the general population and if their differences can help us locate the genetic component of autism. In addition studies designed to see if the small number of vaccinated Amish differ in their risk for NDDs to the larger Amish population would offer information about increased risk from thimerosal.] In the 1930’s the average child only received three vaccines in their young life. Many vaccines are added to the schedule over the years, with an increase in the 1980’s and with 3 vaccines added to the schedule in 1991 alone. The current vaccine schedule calls for 31 vaccines in the first 18 months of life, 48 with full flu vaccination by 72 months of life. Through FOIA requests and documents acquired as a part of discovery process in lawsuits against Lilly, it is clear that they have been warned about, and have been aware of the dangers of the product since at least 1947. A Merck internal memo is obtained during discovery discloses that in 1991 a Merck researcher added up the amount of mercury that is in the new vaccine schedule and sounded an alarm at the company that children who are vaccinated according to it would receive amounts of mercury far and above that considered to be safe by the EPA. Merck takes no action in regard to the information. The use of thimerosal in teething powders for infants leads to a fatal out break of Acrodynia, or “Pink’s Disease”, a form of mercury poisoning. This illness has many symptoms in common with Autism. The link to mercury powders was found in the 1940’s and by the 1950’s Pink’s disease was disappearing. During the 1990’s, autism rates begin to rise dramatically. Parents complain to the health authorities that they believe that their children’s developmental disorders are related to their vaccines. In 1963 Eli Lilly was forwarded an article that read in part: “There is another point of practical significance: does the parenteral injection of thimerosal - containing fluids cause disturbances in thimerosal-sensitive patients?” “It is known that persons that are contact sensitive to a drug may tolerate the same medications internally, but it seems advisable to use a preservative other than thimerosal for injections in thimerosal-sensitive people.” In 1998, a researcher at the CDC does the same math that Merck did 7 years previously. She finds that children are getting as much as 125 times the EPA limit of mercury for their weight. The EPA limit is based on the ingestion of methlymercury in food by a healthy adult. Because 90% of ingested mercury is excreted in the digestive track and never enters the blood stream, so even the EPA limit may be drastically lacking considering that thimerosal is injected directly into the blood stream and is not subject to the bodies natural defenses against toxic poisoning. On August 17, 1967 the Medical/Science department requests that the claim “non-toxic” on thimerosal labels be deleted in next printing run. Two weeks later the label is changed to “non-irritating to body tissues,” and the phrase non-toxic omitted. In 1972 The British Medical Journal reports case of skin burns resulting from the chemical interaction of thimerosal and aluminum. “Mercury is known to act as a catalyst and to cause aluminum to oxidize rapidly, with the production of heat.” The manufacturers who supply us with thimerosal have been informed.” [Thimerosal is being used in vaccines which also contain aluminum]. In the 1970’s six newborns at one hospital die as a result of having a thimerosal containing antiseptic wiped on their wounds. In 1982 the FDA reviews the use of thimerosal. Their statement reads in part: “At the cellular level, thimerosal has been found to be more toxic for human epithelial cells in vitro than mercuric chloride, mercuric nitrate, and merbromim (mercurichrom). “It was found to be 35.3 times more toxic for embryonic chick heart tissue than for staphylococcus areus.” [a pathogen that the thimerosal is intended to kill]. A 1950 study showed that thimerosal was no better than water in protecting mice from potential fatal streptococcal infection.” “The Panel concludes that thimerosal is not safe for over the counter topical use because of its potential for cell damage if applied to broken skin and its allergy potential. It is not effective as a topical antimicrobial because its bacteriastatic action can be reversed.” Additional language added to some Lilly labels: “As with any drug, if you are pregnant or nurs- In 1999, the CDC and the American Association of Pediatrics issue a joint statement saying that although they find no “evidence of harm” from the mercury exposure that children are getting in their vaccines, they are calling on vaccine manufacturers to remove it from vaccines on a voluntary basis as a precautionary measure because “some children may” get more than the EPA limit for mercury at their 6 month visits. Manufactures begin the process in 1999, but do not remove it from all vaccines. No legal ban on thimerosal is issued. No recall of the mercury laden vaccines is issued and companies continue to sell lots already manufactured. Some of these vaccines containing full doses of thimerosal have been found in doctors’ offices by parents who request to read package inserts with expiration dates as late as 2007. No independent or government testing of vaccines is done to confirm that thimerosal has been removed. FDA denies parents request that they set up a system to verify manufacturers claims of low dose or thimerosal free vaccines. No statement is issued to pediatricians to alert them to the symptoms of mercury poisoning. No recommendation is made to pediatricians to screen children who suffered the onset of neurological impairment after vaccination for mercury toxicity. Vaccines with 25mcg of thimerosal are still shipped to developing countries. Most flu shots still contain a full dose of thimerosal. The EPA estimates that a person must weigh 550 lbs. to safely tolerate this amount of mercury. In November of 1999, the CDC commissions one of its new employees, a Belgian named Thomas Verstraten, to study the Vaccine Safety Datalink to find the risk of autism and other NDDs in relation to thimerosal exposure. Verstraten’s first draft of the study finds a relative risk above 7 for children who receive the highest dose of thimerosal to develop autism. In simple terms, such children have more than a 600% higher chance of developing autism than children who don’t receive any thimerosal. A relative risk of 2 is sufficient proof in U.S. courts to find for vaccine injury. Verstraten and other scientists at the CDC spend 4 years trying to change the study so that the relationship between the preservative and NDD’s is significantly reduced or eliminated. The Center for Disease Control will later describe these changes to the study as “improvements”. When the study is published in 2003, it concludes that “no consistent significant associations are found between thimerosal containing vaccines and neurodevelopmental outcomes.” By this time Thomas Verstraten, who is listed as a CDC employee on the study, has been an employee of GlaxoSmithKlein (a defendant in thimerosal law suits) for more than 2 years. In November of 2000, despite being born almost two months prematurely and despite the assurance of my pediatrician that thimerosal had been removed from vaccines, my son Webster is injected with a DTaP vaccine that was 74.5 times the EPA limit for mercury exposure for his weight, just two weeks past his due date. He will go on to develop verbal apraxia and sensory integration disorder. In 2001 Bernard et. al. publish their hypothesis: Autism: A Novel Form of Mercury Poisoning. It reads in part: “Exposure to mercury can cause immune, sensory, neurological, motor, and behavioral dysfunctions similar to traits defining or associated with autism, and the similarities extend to neuroanatomy, neurotransmitters, and biochemistry. Thimerosal, a preservative added to many vaccines, has become a major source of mercury in children who, within their first two years, may have received a quantity of mercury that exceeds safety guidelines. A review of medical literature and US government data suggests that: (i) many cases of idiopathic autism are induced by early mercury exposure from thimerosal; (ii) this type of autism represents an unrecognized mercurial syndrome; and (iii) genetic and non-genetic factors establish a predisposition whereby thimerosal’s adverse effects occur only in some children.” In 2001 the Institute of Medicine is commissioned by the CDC to undertake a comprehensive review of all research into the thimerosal/autism connection. At their first meeting, Dr Stratton, head of the commission, when discussing what the process and product of the working group would be states that, “We said this before you got here, and I think we said this yesterday, the point of no return, the line we will not cross in public policy is to pull the vaccine, change the schedule. We could say it is time to revisit this, but we would never recommend that level. Even recommending research is recommendations for policy. We wouldn’t say compensate, we wouldn’t say pull the vaccine, we wouldn’t say stop the program”. When the transcript of the meeting is made public through a FOIA request, many interpret this to mean that no matter what they find, they will not publicly say that there is any link between the thimerosal and autism. Dr. Harvey Fineberg, head of the IOM, states that this is an incorrect interpretation of the comments, but will not offer any alternate interpretation of what else they could mean. GFCF diet. He will go on to be diagnosed with both Autism and mercury poisoning at age 2. I later discover that the “trace amount” of thimerosal is still just over the EPA limit of mercury for his weight. In 2003 the Verstraten Study is published in Pediatrics with no mention of the conflict of interest of the lead researcher. Later a private contractor would testify before congress that he was ordered to destroy the original data sets used in the 1999 version of the study that found the dramatic link between thimerosal and autism in the interest of “patient confidentiality”. The entire Vaccine Safety Datalink is eventually moved to an offshore private company and can no longer be accessed by FOIA request. In February of 2004, the IOM rushes to hold public hearings where researchers on both sides of the issues present their studies. The meeting is considered to be a “draw” between the two sides by many of those in attendance. A link is neither proved nor disproved, but new research in to the mechanism of how mercury can trigger autism and NDDs in a genetically vulnerable sub population is presented, along with case studies of successful treatment of autistic symptoms based on the new research. In May of the same year, the IOM issues their final conclusion on the link between Thimerosal and NDDs. They state that, “the body of epidemiological evidence favors rejection of a causal relationship between thimerosalcontaining vaccines and autism. The committee further finds that potential biological mechanisms for vaccineinduced autism that have been generated to date are theoretical only.” They then go on to take the unusual step of recommending that research into a link between the two be abandoned and funds be spent on other lines of inquiry. The conclusion relies heavily on Verstraten and several other epidemiological studies that are considered to implement fatally flawed methods and to be riddled with conflict of interest by members of the autism community. Parent groups are enraged. The IOM panel disbands. Later that year, Thomas Verstraten publishes a letter in Pediatrics in response to those who criticize his study and his conflict of interest. His letter does not address the substance of the charges made against the study and the changes that were made to it over it’s 4 year evolution, but instead says that continuing to debate the validity of the 1999 study would be a “waste of scientific energy and not to the benefit of the safety of US children or of all the children world wide that have the privilege of being vaccinated.” He goes on to say that any suggestion of impropriety on the part of himself, the CDC or GSK is an insult and accuses his critics of having “pitiable attitudes”. In July of 2005, in the face of continuing criticism of the IOM findings, the head of the IOM, Dr. Harvey Fineberg, issues a letter stating that Dr. Stratton’s 2001 comments that they would not say “pull the vaccine” or “change the schedule” were taken out of context and did not suggest that the IOM decision was compromised. Dr. Fineberg has not, despite requests, offered an alternative interpretation of what her comments meant in context. In March of 2005, Author David Kirby released his book, “Evidence of Harm - Mercury in Vaccines and the Autism Epidemic: A Medical Controversy” detailing the history of thimerosal in vaccines and its relationship to autism. In April of 2005 the CDC posts a notice on their web site stating that they were in the process of reviewing “Evidence of Harm” and would be responding to the book. In 2001 Verstraten presents a version of his study to the IOM. He begins his presentation by telling the panel that as of 8 am that morning, he had become an employee of Glaxo Smith Klein. Despite the conflict of interest and the drastic changes made over the course of the study, the IOM will rely heavily on the study in making their determination. Dr. Verstraten returns to Belgium and except for a letter published in Pediatrics, little is heard from him again. In June of 2005 Robert F. Kennedy Jr. echoed the information found in the book and charged the CDC and Eli Lilly of malfeasance in covering up evidence of a causal effect between thimerosal and autism in an article published in Rolling Stone and Salon.com. It is entitled “Deadly Immunity: Robert F. Kennedy Jr. investigates the government cover-up of a mercury/autism scandal”. In March of 2002 my son Chandler, who was born one month early, is injected with Hepatitis B vaccine containing a “trace amount” of thimerosal (currently still on the schedule), despite the fact that he has no risk factors for Hepatitis B, and he is still two weeks from reaching his due date. Within days he develops fevers and uncontrollable crying that lasts for three months and bowel problems that persist for two years until he is placed on the July 19, 2005. The CDC holds a press conference to: “communicate the importance of infants and children receiving their recommended vaccinations on time, and reassure parents that vaccines are safe. The renewed attention to the potential causal link between thimerosal, a vaccine preservative, and autism will also be addressed during the press conference.” Vaccine safety groups are not informed of the press conference nor invited. The conference presents no new information and does not answer important questions raised in Evidence of Harm or Deadly Immunity about the conduct of the CDC the IOM or the reliability of the research that continues to be used to show no link between thimerosal and autism. In June of 2007 the first vaccinated v. unvaccinated study is finally done ... by parents. Generation Rescue funded a survey using the CDC’s techniques for determining incidence of a disorder and found that vaccinated children are two and a half times more likely to have a neurodevelopmental disorder. CDC spokesman Curtis Allen said, “We look forward to learning more about the survey.” On June 25, 2007 Congresswoman Carolyn Maloney (D-NY) introduced the “Comprehensive Comparative Study of Vaccinated and Unvaccinated Populations Act of 2007” (H.R. 2832), legislation that would require the National Institutes of Health (NIH) to conduct a comprehensive comparative study of vaccinated and unvaccinated populations. Her stated purpose is to resolve the controversy about the possible link between autism and mercury or other vaccine components. The study is never done. Today, January 2016, autism, ADHD and learning disabilities are at truly epidemic levels with one in six children presenting. The government and the pharmaceutical companies will claim that mercury has not been used in the manufacture of most vaccines for some time now, is used only in influenza vaccines and appears only in trace amounts in others. In the next chapter you’ll read about aluminum which is even more deadly than mercury. Chapter Three Aluminum • Alum 1911 - 2015 Aluminum rescued Big Pharma from the mercury-autism connection. Not only does aluminum cause the symptoms found on the autistic spectrum, it also causes nearly 100 more disorders. Big Pharma can rest easy. Vaccines no longer contain mercury and the autism epidemic continues to grow. Obviously it couldn’t have been the mercury ... JAMA • September 2, 1911 Some Objections To The Use Of Alum Baking Powder by William J. Gies, Ph.D. Abstract During a period of about seven years I have occasionally conducted experiments on the effects of aluminum salts. These studies have convinced me that the use in food of alum or any other aluminum compound is a dangerous practice. That the aluminum ion is very toxic is well known. That “aluminized” food yields soluble aluminum compounds to gastric juice (and stomach contents) has been demonstrated. That such soluble aluminum is in part absorbed and carried to all parts of the body by the blood can no longer be doubted. That the organism can “tolerate” such treatment without suffering harmful consequences has not been shown. It is believed that the facts in this paper will give emphasis to my conviction that aluminum should be excluded from food. http://jama.jamanetwork.com/article.aspx?articleid=448038 “That the aluminum ion is very toxic is well known. That “aluminized” food yields soluble aluminum compounds to gastric juice (and stomach contents) has been demonstrated. That such soluble aluminum is in part absorbed and carried to all parts of the body by the blood can no longer be doubted. That the organism can “tolerate” such treatment without suffering harmful consequences has not been shown.” “I was recently called to see a man ...” The Lancet • June 18, 1921 Case Of Aluminum Poisoning by Dr. John Spofforth L.R.C.P.EDIN., Membership At The Royal College Of Surgeons, England Abstract I was recently called to see a man, aged 46, who was then employed at a firm of metalworkers. He was in a state of great exhaustion and suffering from very severe and persistent vomiting. The pulse was slow and irregular. I suspected metallic poisoning and later sent a specimen of his urine to …, analytical chemists, who reported that it contained a large amount of aluminium, also of phosphates. The patient said he had been dipping red-hot metal articles, contained in an aluminium holder, into concentrated nitric acid. Aluminium produces a rather slow intoxication. In this case it caused loss of memory, tremor, jerking movements and impaired co-ordination. There was also a chronic constipation and incontinence of urine. http://www.thelancet.com/journals/lancet/article/PIIS0140-6736(01)24927-7/abstract JAMA • February 17, 1945 Early immunization against Pertussis with Alum precipitated vaccine by Wallace Sako, MD., Ph.D., W. L. Treuting, MD., MPH., David B. Witt, Samuel J. Nichamin Abstract According to the recent mortality records the majority of deaths from pertussis occur in infants. Between 1938 and 1940 inclusive almost 67 per cent of the 10,730 deaths from whooping cough reported in the United States occurred during the first year of life and 47 per cent of these deaths were in infants under 7 months of age (table 1 and fig. 1). The exceptionally high mortality which pertussis exacts in the first half year of life calls for thorough investigation of the possibility of increasing the resistance of young infants to the disease by immunizing them shortly after birth. This procedure has been objected to chiefly because of the belief that young infants do not possess the ability to develop active immunity. No extensive study has been carried out, however, to establish the earliest age at which immunity to pertussis can be acquired. http://jama.jamanetwork.com/article.aspx?articleid=272944&resultClick=3 “This procedure has been objected to chiefly because of the belief that young infants do not possess the ability to develop active immunity. No extensive study has been carried out, however, to establish the earliest age at which immunity to pertussis can be acquired.” “Aluminium intoxication ... is associated with periorbital bleeding, lethargy, anorexia, and death. It is recommended that aluminium salts should be withdrawn from use in patients with renal failure and their use restricted in normal persons pending clarification of the issue.” The Lancet • Volume 299, No. 7750, p564–568 • March 1972 Aluminium Toxicity In Rats G.M. Berlyne, J. Ben Ari, E. Knopf, R. Yagil, G. Weinberger, G.M. Danovitch Department of Nephrology Negev Central Hospital and Division of Life Sciences Negev Arid Zone Research Institute and Faculty of Natural Science University of Negev, Beer Sheva, Israel Abstract Aluminium intoxication has been demonstrated in the uræmic and non-uræmic rat after modest doses of oral and parenteral aluminium salts. The clinical syndrome is associated with periorbital bleeding, lethargy, anorexia, and death. Plasma-levels of aluminium were greatly raised, as were tissue levels in liver, heart, striated muscle, brain, and bone. Histological changes were found in the cornea. Liver oxygen consumption was reduced by giving the animals aluminium salts before death or by adding aluminium in vitro to normal liver homogenates. It is recommended that aluminium salts should be withdrawn from use in patients with renal failure and their use restricted in normal persons pending clarification of the issue. http://www.ncbi.nlm.nih.gov/pubmed/4110051 Science • May 1973 Brain aluminum distribution in Alzheimer’s disease and experimental neurofibrillary degeneration Crapper DR, Krishnan SS, Dalton AJ. Abstract Neurofibrillary degeneration is an important pathological finding in senile and presenile dementia of the Alzheimer type. Experimentally, aluminum induces neurofibrillary degeneration in neurons of higher mammals. Aluminum concentrations approaching those used experimentally have been found in some regions of the brains of patients with Alzheimer’s disease. http://www.ncbi.nlm.nih.gov/pubmed/4735595 “Experimentally, aluminum induces neurofibrillary degeneration in neurons of higher mammals.” Physiology & Behavior • May 1973 Alterations in short-term retention, conditioned avoidance response acquisition and motivation following aluminum induced neurofibrillary degeneration D.R. Crapper Departments of Physiology and Medicine Faculty of Medicine, University of Toronto Toronto, Canada A.J. Dalton Department of Psychology Mental Retardation Centre, Toronto, Canada Abstract Aluminum chloride induced neurofibrillary degeneration may provide a useful model for the study of a human dementia process. This possibility was assessed in cats trained to perform on a delayed-response task, a conditioned avoidance task, visual and temporal discrimination tasks and a motivational task involving rewarding intracranial electrical stimulation. After an initial asymptomatic period short term retention and acquisition of a conditioned avoidance response were selectively impaired. The associated ultrastructural abnormalities plausibly implicate the cytoplasmic streaming mechanism in the cellular substrate for some retention and acquisition phenomena. http://www.sciencedirect.com/science/article/pii/0031938473900632 “Aluminum chloride induced neurofibrillary degeneration may provide a useful model for the study of a human dementia process.” “... exerted selective and differential effects on the transport systems of neurotransmitter substances in the synaptosomal membrane.” Journal of Inorganic Biochemistry • 1981 Selective inhibition of L-glutamate and gammaaminobutyrate transport in nerve ending particles by aluminium, manganese, and cadmium chloride Patrick C.L. Wong, James C.K. Lai, Louis Lim, Alan N. Davison Abstract AlCl3, MnCl2, and CdCl2 inhibited the rates of accumulation of 14C] L-glutamate and 3H] gammaaminobutyrate (GABA) in purified rat forebrain nerve-ending particles in a dose-dependent fashion. The concentrations that would give 50% inhibition (IC50) of GABA transport were 316 μM, 7.4 mM, and 1.4 mM, respectively. Ca2+ (1 mM) enhanced the inhibitory effect of Al3+ (IC50 decreased to 149 μM) but antagonized that of Mn2+ (IC50 = 10 mM) and Cd2+ (IC50 = 2.1 mM). For glutamate transport 1 mM Ca2+ changed the IC50 values from 299 to 224 μm for Al3+, 7.1 to 10 mM for Mn2+, and 2 to 3 mM for Cd2+. In contrast, the rates of accumulation of 14C] 2-deoxy-glucose and 3H] L-phenylalanine were mostly unaffected by these metal ions. The results indicate that Al3+, Mn2+, and Cd2+ exerted selective and differential effects on the transport systems of neurotransmitter substances in the synaptosomal membrane. http://www.sciencedirect.com/science/article/pii/S0162013400800057 Journal Of Neurochemistry • February 1984 Inhibition of brain glycolysis by aluminum Lai JC, Blass JP. Abstract Aluminum inhibited both the cytosolic and mitochondrial hexokinase activities in rat brain. The IC50 values were between 4 and 9 microM. Aluminum was effective at mildly acidic (pH 6.8) or slightly alkaline (pH 7.2-7.5) pH, in the presence of a physiological level of magnesium (0.5 mM). However, saturating (8 mM) magnesium antagonized the effect of aluminum on both forms of hexokinase activity. Other enzymes examined were considerably less sensitive to inhibition by aluminum. The IC50 of aluminum for phosphofructokinase was 1.8 mM and for lactate dehydrogenase 0.4 mM. At 10-600 microM, aluminum actually stimulated pyruvate kinase. Aluminum also inhibited lactate production by rat brain extracts: this effect was much more marked with glucose as substrate than with glucose-6phosphate. However, the IC50 for inhibiting lactate production using glucose as substrate was 280 microM, higher than that required to inhibit hexokinase. This concentration of aluminum is comparable to those reportedly found in the brains of patients who had died with dialysis dementia and in the brains of some of the patients who had died with Alzheimer disease. Inhibition of carbohydrate utilization may be one of the mechanisms by which aluminum can act as a neurotoxin. http://www.ncbi.nlm.nih.gov/pubmed/6229606 “This concentration of aluminum is comparable to those reportedly found in the brains of patients who had died with dialysis dementia and in the brains of some of the patients who had died with Alzheimer disease. Inhibition of carbohydrate utilization may be one of the mechanisms by which aluminum can act as a neurotoxin.” Journal Of Neurology, Neurosurgery And Psychiatry • February 1984 Experimental aluminium encephalopathy: quantitative EEG analysis of aluminium bioavailability Cutrufo C, Caroli S, Delle Femmine P, Ortolani E, Palazzesi S, Violante N, Zapponi GA, Loizzo A. Abstract Single oral doses of aluminium hydroxide (50 to 200 mg/kg) were found to induce in mice a dose-dependent diminution of the power of the 7.5 to 12 Hz frequency band, with a parallel dose-dependent increase of aluminium content in the brain, as early as 45 min after administration, and indicated that aluminium hydroxide is readily absorbed through an empty stomach or duodenum and is able to induce alterations of background EEG rhythms at doses equivalent to the ones used in human therapy. These data suggest that the EEG disturbances of the background type, (which are observed during the early stage of dialysis encephalopathy in man), may be partly due to a pharmacological and therefore reversible effect induced by an increase in aluminium level in the brain. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1027694/ “Single oral doses of aluminium hydroxide were found to induce in mice a dose-dependent diminution of the power of the 7.5 to 12 Hz frequency band, with a parallel dose-dependent increase of aluminium content in the brain, as early as 45 min after administration, and indicated that aluminium hydroxide is readily absorbed through an empty stomach or duodenum and is able to induce alterations of background EEG rhythms at doses equivalent to the ones used in human therapy.” Acta Neuropathology • 1985 Histochemical localization of aluminum in the rabbit Central Nervous System Wen GY, Wisniewski HM. Abstract Aluminum was observed in the nucleolus, interchromatin granules, rough endoplasmic reticulum, free ribosomes, euchromatin, and the heterochromatin of the neuron. The association of aluminum with the first four r-RNA-containing cellular components and with the last two DNA-containing chromatins suggests the association of aluminum with the nucleic acids. The aluminum may interfere with the normal mechanism of the protein synthesis of r-RNA and of the transcription or gene modulation of DNA. Aluminum was also observed in the astrocytic process and in the nuclei of endothelial cells, pericytes, and the muscle cells of the blood vessels. The detection of aluminum in the pyrimidal cells of the cerebral cortex and hippocampus and in the spinal cord neurons, was observed 1 h after i.v. injection, indicating a rapid entry of aluminum from the injection site through the blood-brain barrier (BBB) to the neurons. Using Morin stain, pyramidal neurons of the cerebral cortex and hippocampus, motoneurons of spinal cord, ganglion cells, and bipolar cells of retina and Purkinje cells of cerebellum, exhibited yellow fluorescence, with peak intensity at 560 nm. Tangles were observed in these six types of neurons. The granule cells of hippocampus and cerebellum and the photoreceptors of the retina exhibited green fluorescence with the peak intensity at 490-500 nm. Tangles were not observed in these three types of neurons. http://www.ncbi.nlm.nih.gov/pubmed/?term=2417440 “The detection of aluminum in the pyrimidal cells of the cerebral cortex and hippocampus and in the spinal cord neurons, was observed 1-hour after i.v. injection, indicating a rapid entry of aluminum from the injection site through the blood-brain barrier (BBB) to the neurons.” Environmental Health Perspectives • March 1986 Metabolism and possible health effects of aluminum by P. O. Ganrot Abstract Literature regarding the biochemistry of aluminum and eight similar ions is reviewed. Close and hitherto unknown similarities were found. A hypothetical model is presented for the metabolism, based on documented direct observations of Al3+ and analogies from other ions. Main characteristics are low intestinal absorption, rapid urinary excretion, and slow tissue uptake, mostly in skeleton and reticuloendothelial cells. Intracellular Al3+ is probably first confined in the lysosomes but then slowly accumulates in the cell nucleus and chromatin. Large, long-lived cells, e.g., neurons, may be the most liable to this accumulation. In heterochromatin, Al3+ levels can be found comparable to those used in leather tannage. It is proposed that an accumulation may take place at a subcellular level without any significant increase in the corresponding tissue concentration. The possible effects of this accumulation are discussed. As Al3+ is neurotoxic, the brain metabolism is most interesting. The normal and the lethally toxic brain levels of Al3+ are well documented and differ only by a factor of 3-10. The normal brain uptake of Al3+ is estimated from data on intestinal uptake of Al3+ and brain uptake of radionuclides of similar ions administered intravenously. The uptake is very slow, 1 mg in 36 years, and is consistent with an assumption that Al3+ taken up by the brain cannot be eliminated and is therefore accumulated. The possibility that Al3+ may cause or contribute to some specific diseases, most of them related to aging, is discussed with the proposed metabolic picture in mind. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1474689/ “The uptake is very slow, 1 mg in 36 years, and is consistent with an assumption that Al3+ taken up by the brain cannot be eliminated and is therefore accumulated.” The Society of Toxicology • May 1987 Maternal and Developmental Toxicity of Chronic Aluminum Exposure in Mice Author Information Mari S. Golub*, M. Eric Gershwin*, James M. Donald*, Scott Negri, Carl L. Keen* *Department of Internal Medicine, University of California Davis, California 95616 a Department of Nutrition, University of California Davis, California 95616 Abstract The present study demonstrated aluminum-induced neurotoxicity in mouse dams and developmental retardation in their offspring following oral exposure to several dose levels during gestation and lactation. Female mice fed aluminum lactate (AL) at levels of 500 or 1000 ppm in their diet from Day 0 gestation to Day 21 postpartum were compared to mice which received a 100 ppm aluminum diet either ad libitum or pair-fed to the 1000 ppm AL group. Dams receiving the 500 and 1000 ppm AL diets showed signs of neurotoxicity beginning at Days 12–15 postpartum and showed significant weight loss. Offspring showed dose-dependent decreases in body weight (F = 6.47, p < 0.001), crown-rump length (F = 1.11, p < 0.0001), and ponderal index (F = 6.90, p < 0.0002), at birth and preweaning. Absolute and relative liver and spleen weights were lower in pups from the high AL groups compared to controls (F = 3.34, p < 0.025 and F = 15.54, p < 0.001, respectively). Neurobehavioral development was somewhat delayed in aluminum-treated pups, but not in their pair-fed controls (F = 5.52, p < 0.005). In addition to showing oral toxicity of excess AL during development dose-dependent toxic effects of parenteral aluminum exposure were demonstrated in pregnant mice which were injected subcutaneously with aluminum lactate solution at 10, 20, or 40 mg Al/kg body wt on Days 3, 5, 7, 9, 12, 13, and 15 of gestation. Maternal spleen and liver weights were significantly increased in aluminum treated animals (p < 0.001 and p < 0.05, respectively). Fetal crown-rump lengths were significantly reduced in the 20 mg/kg aluminum group (F = 9.79, p < 0.001). http://toxsci.oxfordjournals.org/content/8/3/346 “The present study demonstrated aluminum-induced neurotoxicity in mouse dams and developmental retardation in their offspring following oral exposure to several dose levels during gestation and lactation.” Neurotoxicology • Fall 1988 Neuropathologic, neurochemical and immunocytochemical characteristics of aluminum-induced neurofilamentous degeneration Author information Pendlebury WW1, Beal MF, Kowall NW, Solomon PR. Department of Pathology University of Vermont College of Medicine, Burlington Abstract Inoculation of aluminum salts or metallic aluminum into the central nervous system of rabbits produces an encephalomyelopathy accompanied by widespread neurofibrillary degeneration (NFD) affecting restricted neuronal populations. Some investigators have suggested that this preparation may serve as an animal model for human neurodegenerative disorders, such as Alzheimer’s disease (AD), in which neurofibrillary tangle (NFT) formation is a prominent histopathologic finding. However, neurochemical, immunocytochemical and behavioral features of the model are largely unknown and its neuropathology only partially described. We have undertaken a series of experiments designed to further characterize these aspects of the model. We have used an intraventricular route of injection of aluminum chloride and found that the distribution of NFD in rabbit brain is similar to the distribution of NFT formation in AD. Immunocytochemical probes demonstrate that phosphorylated neurofilaments accumulate in neuronal perikarya containing NFD, and double labelling techniques suggest that NFD affects primarily projection type neurons. The neurochemical profile of aluminum intoxicated rabbits shows both similarities and discrepancies to that of AD. Finally, as reported in a companion article in this issue of Neurotoxicology (Solomon and Pendlebury, 1988), aluminum-exposed rabbits develop learning and memory deficits which are strongly correlated with the degree of whole brain NFD but not with motor, sensory or motivational factors. We conclude that aluminum-induced NFD may have relevance for understanding NFT formation in AD and other neurodegenerative disorders in which abnormalities of the neuronal cytoskeletal architecture are present. http://www.ncbi.nlm.nih.gov/pubmed/?term=3200512 “... aluminum-induced neurofibrillary degeneration may have relevance for understanding neurofibrillary tangle formation in Alzheimer’s disease and other neurodegenerative disorders ...” Neuroscience And Biobehavioral Reviews • Spring 1989 Aluminum-induced neurotoxicity: alterations in membrane function at the blood-brain barrier Author information Banks WA1, Kastin AJ. 1Veterans Administration Medical Center New Orleans, LA Abstract Aluminum is established as a neurotoxin, although the basis for its toxicity is unknown. It recently has been shown to alter the function of the blood-brain barrier (BBB), which regulates exchanges between the central nervous system (CNS) and peripheral circulation. The BBB owes its unique properties to the integrity of the cell membranes that comprise it. Aluminum affects some of the membrane-like functions of the BBB. It increases the rate of transmembrane diffusion and selectively changes saturable transport systems without disrupting the integrity of the membranes or altering CNS hemodynamics. Such alterations in the access to the brain of nutrients, hormones, toxins, and drugs could be the basis of CNS dysfunction. Aluminum is capable of altering membrane function at the BBB; many of its effects on the CNS as well as peripheral tissues can be explained by its actions as a membrane toxin. http://www.ncbi.nlm.nih.gov/pubmed/2671833 “Aluminum is established as a neurotoxin ... Aluminum affects some of the membrane-like functions of the BBB ... many of its effects on the CNS as well as peripheral tissues can be explained by its actions as a membrane toxin.” Kidney International • May 1989 Micromolar aluminum levels reduce 3H-thymidine incorporation by cell line UMR 106-01 Author information Blair HC1, Finch JL, Avioli R, Crouch EC, Slatopolsky E, Teitelbaum SL. Department of Pathology and Laboratory Medicine Jewish Hospital, Washington University Medical Center St. Louis, Missouri Abstract Aluminum-induced osteomalacia is a frequent complication observed in patients on maintenance hemodialysis. However, it is not known whether there are direct effects of aluminum on osteoblasts, or alternatively, whether the observed changes are due to changes in PTH or other factors. We sought to determine the effect of micromolar levels of aluminum on osteoblasts using a well-defined cell line derived from a 32P induced osteosarcoma of rat, UMR 106-01, which is alkaline-phosphatase positive, responds to PTH, and synthesizes type I collagen. Aluminum exposure was controlled using tissue culture media with [Al ] less than 1 microgram/liter (40 nM), produced by precipitation of aluminum salts at pH 8.5. The effect of defined [Al ], from 20 to 800 micrograms/liter (0.7 to 30 microM), was then determined by adding back aluminum while measuring DNA and protein synthesis. We found that aluminum depressed DNA synthesis, as determined by 3H-thymidine incorporation, by 60%, with half maximal effect at 20 micrograms/liter (740 nM) in cells at a density of 20,000/cm2. Alternatively, protein synthesis, as determined by 3H-leucine incorporation, did not decline, and in some cases increased. However, qualitative analysis of matrix proteins produced with and without 800 micrograms/liter (30 mM) [Al ] showed no differences. Direct measurements of cell number and protein synthesis confirmed these findings. Al does not alter the PTH-induced cAMP response of these cells. Thus, aluminum has a direct effect on cell division, and probably on protein synthesis, in this osteoblast-like cell line. These effects occur at levels of aluminum below those commonly contaminating tissue culture media, and thus are seen reproducibly only in media of defined [Al ]. http://www.ncbi.nlm.nih.gov/pubmed/2549294 “... aluminum has a direct effect on cell division, and probably on protein synthesis ...” Clinical Science • London England • November 1989 Effect of aluminium on superoxide dismutase Author information Shainkin-Kestenbaum R1, Adler AJ, Berlyne GM, Caruso C. Nephrology Section Brooklyn VA Medical Center New York 11209 Abstract 1. The effect of Al3+ on superoxide dismutase in vitro was studied, since in uraemia there is excessive superoxide production and frequently an elevated serum Al3+ level. Thus, the protective role of superoxide dismutase is particularly important. “The combination of 2. Al3+ in concentrations similar to those found in the serum of uraemic patients inhibits superoxide dismutase activity. The degree of inhibition is directly proportional to the Al3+ level. with an increased aluminum level may contribute 3. The combination of excessive oxygen free radical production with an increased Al3+ level may contribute to a variety of complications, including aluminium dementia or initiation and promotion of carcinogenic processes, which are known to be more common in uraemic patients. http://www.ncbi.nlm.nih.gov/pubmed/2582719 excessive oxygen free radical production to a variety of complications, including aluminium dementia or initiation and promotion of carcinogenic processes ...” Environmental Geochemistry And Health • March 1990 Aluminum neurotoxicity in mammals Author information Wisniewski HM1, Moretz RC, Sturman JA, Wen GY, Shek JW. Institute for Basic Research in Developmental Disabilities Departments of Pathological and Neurobiology New York State Office of Mental Retardation and Developmental Disabilities, USA Abstract Although aluminum comprises a large percentage of the Earth’s crust, it is excluded from body tissues, and especially from the central nervous system. When aluminum is experimentally introduced to the central nervous system, several neurotoxic effects are observed: i.e. neurofibrillary changes, behavioral and cognitive deficits and enzymatic and neurotransmitter changes, as well as certain types of epileptic seizures. The localization of relatively high levels of aluminum in Alzheimer disease, Guamanian amyotrophic lateral sclerosis and Parkinsonism-dementia has led to the implication of aluminum as a pathogenic factor in these diseases. Recent studies have shown that microtubule-associated proteins are part of the paired helical filaments which make up the intraneuronal neurofibrillary tangle. Other studies have identified the protein making the vascular and neuritic (senile) plaque amyloid and located the gene responsible for this protein to chromosome 21.Our electron microprobe analysis studies have not found the levels of aluminum or silicon in either the neurofibrillary tangles or amyloid cores reported elsewhere, nor have the levels of aluminum been elevated in approximately one half of the tangles and plaque cores examined to date. http://www.ncbi.nlm.nih.gov/pubmed/?term=24202577 “When aluminum is experimentally introduced to the central nervous system, several neurotoxic effects are observed: i.e. neurofibrillary changes, behavioral and cognitive deficits and enzymatic and neurotransmitter changes, as well as certain types of epileptic seizures.” Biofactors • July 1990 Aluminum, a neurotoxin which affects diverse metabolic reactions Author information Joshi JG. Department of Biochemistry University of Tennessee Knoxville 37996-0840 Abstract Experimental evidence is summarized to support the hypothesis that chronic exposure to low levels of aluminum may lead to neurological disorders. These disorders result from defective phosphorylation--dephosphorylation reactions, reduced glucose utilization and site-specific damage inflicted by free radicals produced by altered iron metabolism. The brain is a highly compartmentalized organ. Therefore, a co-localization of critical mass of metabolic errors rather than a single event may be essential to precipitate a neural disease. Aluminum appears to participate in formulating this critical mass. Patients with dialysis dementia get partial relief by desferroxamine which chelates aluminum. However, it also chelates iron and therefore limits its applicability. While the specific chelator for aluminum is yet to be made available, exercising a caution in aluminum intake appears prudent. http://www.ncbi.nlm.nih.gov/pubmed/?term=2198876 “Experimental evidence is summarized to support the hypothesis that chronic exposure to low levels of aluminum may lead to neurological disorders.” Journal Of Pharmacology And Experimental Therapeutics • July 1990 Mechanism of aluminum-induced inhibition of hepatic glycolysis: inactivation of phosphofructokinase Author information Xu ZX1, Fox L, Melethil S, Winberg L, Badr M. School of Pharmacy University of Missouri-Kansas City Abstract Aluminum, an abundant element in the earth’s crust, has been implicated in various pathological disorders and low concentrations of this element have recently been shown to inhibit brain glycolysis. However, despite the fact that aluminum accumulates in high concentrations in the liver, potential effects of this metal on hepatic intermediary metabolism have not been explored. In perfused livers from untreated rats, maximal rates of production of lactate plus pyruvate (glycolysis) were 93 +/- 15 mumols/g/hr. Glycolysis was severely inhibited in livers from aluminum-treated rats (0.5 mg/kg, 6 hr before experiment) with maximal rates of only 23 +/- 4 mumols/g/hr. In contrast, glucose production (glycogenolysis) and hepatic oxygen uptake were not altered significantly by prior treatment with aluminum. In livers from fasted rats, pretreatment with aluminum did not influence gluconeogenesis or production of lactate and pyruvate from fructose (5 mM). This finding indicates that pyruvate kinase is not inhibited by aluminum and implicates phosphofructokinase, hexokinase and/or glucokinase as sites for the inhibitory effect of aluminum on glycolysis. In liver homogenates from untreated rats, increasing concentrations of aluminum did not show any appreciable effect on hexokinase or glucokinase activity but did cause progressive decreases in phosphofructokinase activity. Therefore, aluminum-induced inhibition of liver phosphofructokinase, an important control site in the glycolytic pathway, is most likely responsible for aluminum-induced inhibition of hepatic glycolysis. http://www.ncbi.nlm.nih.gov/pubmed/2142221 “Aluminum, an abundant element in the earth’s crust, has been implicated in various pathological disorders and low concentrations of this element have recently been shown to inhibit brain glycolysis.” “These studies clearly demonstrate the philosophy that chronic rather than acute experimental models of toxicity are necessary in order to enhance our understanding of human neurodegenerative disorders with long-latency and slow progression.” Neurotoxicology • Fall 1991 Pacific paradigms of environmentally-induced neurological disorders: clinical, epidemiological and molecular perspectives Author information Garruto RM Laboratory of Central Nervous System Studies National Institutes of Health, Bethesda, Maryland 20892 Abstract During the past quarter century biomedical scientists have begun to recognize the unique opportunities for studying disease etiology and mechanisms of pathogenesis in non-Western anthropological populations with focal, endemic diseases. Such natural experiments as they are called, are important paradigms for solving etiological and epidemiological problems of widespread medical significance, with an ultimate goal towards treatment and prevention. The systematic search for etiological factors and mechanisms of pathogenesis of neurodegenerative disorders is perhaps nowhere better exemplified than in the western Pacific. During the past three decades, the opportunistic and multidisciplinary study of hyperendemic foci of amyotrophic lateral sclerosis and parkinsonism-dementia which occur in different cultures, in different ecological zones and among genetically divergent populations have served as natural models that have had a major impact on our thinking and enhanced our understanding of these and other neurodegenerative disorders such as Alzheimer disease and the process of early neuronal aging. Our cross-disciplinary approach to these intriguing neurobiological problems and the accumulated epidemiological, genetic, cellular and molecular evidence strongly implicates environmental factors in their causation, specifically the role of aluminum and its interaction with calcium in neuronal degeneration. As a direct consequence of our studies in these Pacific populations, we have undertaken the long-term development of experimental models of neuronal degeneration, in an attempt to understand the cellular and molecular mechanisms by which these toxicants affect the central nervous system. Our experimental studies have resulted in the establishment of an aluminum-induced chronic myelopathy in rabbits and the development of neurofilamentous lesions after low-dose aluminum administration in cell culture. These studies clearly demonstrate the philosophy that chronic rather than acute experimental models of toxicity are necessary in order to enhance our understanding of human neurodegenerative disorders with longlatency and slow progression. Finally, the ultimate significance of these Pacific paradigms may well depend on our ability to comprehensively evaluate and synthesize the growing body of relevant scientific data from other human disorders and from widely divergent academic fields, as well as our ability to recognize emerging new models in nature. http://www.ncbi.nlm.nih.gov/pubmed/?term=1745428 Annals Of Neurology • March 1992 Selective accumulation of aluminum and iron in the neurofibrillary tangles of Alzheimer’s disease: a laser microprobe (LAMMA) study Author information Good PF1, Perl DP, Bierer LM, Schmeidler J. Department of Pathology Mount Sinai School of Medicine New York, NY 10029 Abstract We report the results of an examination of the elemental content of neurofibrillary tangle-bearing and neurofibrillary tangle-free neurons identified within the hippocampus of 10 subjects with Alzheimer’s disease and 4 neuropathologically intact age-matched control subjects. The study employed laser microprobe mass analysis (LAMMA), a technique that provides extremely sensitive multielement detection in plastic-embedded, semithin-sectioned tissues. Evidence for the selective accumulation of aluminum within the neurofibrillary tangle-bearing neurons was obtained in all 10 subjects with Alzheimer’s disease. The site of aluminum deposition within these cells was the neurofibrillary tangle itself, and not the “nuclear region,” as we previously reported. Iron accumulation was also detected within neurofibrillary tangles. Evaluation for the accumulation of other elements within the tangle-bearing neurons failed to reveal any other metallic element as being consistently present. In addition, probe sites directed to neurons identified in snap-frozen cryostat sections from 2 subjects with Alzheimer’s disease revealed similar spectra with prominent aluminum-related peaks, confirming that our findings are not related to exogenous contamination through fixation, embedding, or other procedures prior to analysis. This study further confirms the association of aluminum and neurofibrillary tangle formation in Alzheimer’s disease. http://www.ncbi.nlm.nih.gov/pubmed/1637136 “This study further confirms the association of aluminum and neurofibrillary tangle formation in Alzheimer’s disease.” Pharmacology And Toxicology • April 1992 Aluminium-adjuvanted vaccines transiently increase aluminium levels in murine brain tissue Author information Redhead K1, Quinlan GJ, Das RG, Gutteridge JM. Division of Bacteriology National Institute for Biological Standards and Control Herts., UK Abstract Aluminium is widely used as an adjuvant in human vaccines, and children can often receive up to 3.75 mg of parenteral aluminium during the first six months of life. We show that intraperitoneal injection of aluminium adsorbed vaccines into mice causes a transient rise in brain tissue aluminium levels peaking around the second and third day after injection. This rise is not seen in the saline control group of animals or with vaccine not containing aluminium. It is likely that aluminium is transported to the brain by the iron-binding protein transferrin and enters the brain via specific transferrin receptors. http://www.ncbi.nlm.nih.gov/pubmed/1608913 “... children can often receive up to 3.75 mg of parenteral aluminium during the first six months of life We show that intraperitoneal injection of aluminium adsorbed vaccines into mice causes a transient rise in brain tissue aluminium levels peaking around the second and third day after injection.” Life Sciences • June 1992 Long-term effects of aluminium on the fetal mouse brain Author information Clayton RM1, Sedowofia SK, Rankin JM, Manning A. Division of Biological Sciences University of Edinburgh Abstract Potentially noxious substances may act as fetal teratogens at levels far lower than those required to produce detectable effects in adults, and behavioural teratogenicity may occur at levels lower than those which produce morphological teratogenesis. Aluminium (Al) is a potential neurotoxin in adults. Since pregnant women may be exposed to untoward levels of Al compounds under certain conditions, we have examined the long-term effects of treating the pregnant mouse with intraperitoneal or oral aluminium sulphate on brain biochemistry and behaviour of the offspring. The cholinergic system, as evaluated by the activity of choline acetyltransferase (ChAT), was affected differentially in different regions of the brain, and still showed significant effects in the adult. Differences between the intraperitoneal and oral series in the magnitude of effect seen in the regions of the brain probably reflect differences in the effective level of exposure. Growth rate and psychomotor maturation in the pre-weaning mouse were affected in the intraperitoneal series only, showing a marked post-natal maternal effect. http://www.ncbi.nlm.nih.gov/pubmed/?term=1453876 “Potentially noxious substances may act as fetal teratogens at levels far lower than those required to produce detectable effects in adults, and behavioural teratogenicity may occur at levels lower than those which produce morphological teratogenesis.” Neurotoxicology • Summer 1992 Aluminum inhibits glutamate release f rom transverse rat hippocampal slices: role of G proteins, Ca channels and protein kinase C Author information Provan SD1, Yokel RA. College of Pharmacy University of Kentucky Lexington 40536-0082 Abstract Aluminum (Al) has been shown to produce deficits in learning and memory. The present experiments tested the hypothesis that Al-induced inhibition of learning may be due to its effect on glutamate release secondary to changes in calcium channel function and/or intracellular events triggering glutamate release. Calcium-dependent potassium (K)-evoked [14C]-glutamate release from 400 microns transverse rat hippocampal slices was inhibited by Al in a concentration dependent manner (IC50 = 40 microM). Aluminum (30, 100 microM) noncompetitively inhibited Bay K 8644evoked glutamate release. 4-Aminopyridine (30, 1000 microM) noncompetitively attenuated the Al inhibition of glutamate release, suggesting an Al-induced alteration of Ca channel function. Activation of the Gi protein by R(-)phenylisopropyladenosine (PIA; 1 microM) reduced K-evoked glutamate release 69%, whereas 300 microM Al produced an 84% reduction. These effects were prevented by the Gi protein inhibitor N-ethylmaleimide (NEM; 100 microM), suggesting an effect of Al on the Gi protein to inhibit glutamate release. Phorbol myristate acetate (0.16 microM)-induced glutamate release was inhibited by 300 microM Al and 80 microM polymyxin B, suggesting an Al modulation of protein kinase C (PKC)-evoked glutamate release. These results demonstrate an Al inhibition of glutamate release that may be mediated by multiple, but interconnected mechanisms (e.g., via interactions with Ca systems), providing multiple targets for an Al-induced alteration of neuronal function. http://www.ncbi.nlm.nih.gov/pubmed/?term=1359483 “Aluminum (Al) has been shown to produce deficits in learning and memory.” Journal Of Theoretical Biology • November 1992 The cellular toxicity of aluminium Author information Exley C, Birchall JD. Institute of Aquaculture University of Stirling Scotland, UK Abstract Aluminium is a serious environmental toxicant and is inimical to biota. Omnipresent, it is linked with a number of disorders in man including Alzheimer’s disease, Parkinson’s dementia and osteomalacia. Evidence supporting aluminium as an aetiological agent in such disorders is not conclusive and suffers principally from a lack of consensus with respect to aluminium’s toxic mode of action. Obligatory to the elucidation of toxic mechanisms is an understanding of the biological availability of aluminium. This describes the fate of and response to aluminium in any biological system and is thus an important influence of the toxicity of aluminium. A general theme in much aluminium toxicity is an accelerated cell death. Herein mechanisms are described to account for cell death from both acute and chronic aluminium challenges. Aluminium associations with both extracellular surfaces and intracellular ligands are implicated. The cellular response to aluminium is found to be biphasic having both stimulatory and inhibitory components. In either case the disruption of second messenger systems is observed and GTPase cycles are potential target sites. Specific ligands for aluminium at these sites are unknown though are likely to be proteins upon which oxygen-based functional groups are orientated to give exceptionally strong binding with the free aluminium ion. http://www.ncbi.nlm.nih.gov/pubmed/?term=1291812 “A general theme in much aluminium toxicity is an accelerated cell death.” Toxicology • 1992 Role of aluminium in skin reactions after diphtheria-tetanus-pertussis-poliomyelitis vaccination: an experimental study in rabbits Author information Pineau A1, Durand C, Guillard O, Bureau B, Stalder JF. Laboratoire de Toxicologie et d’Hygiène Industrielle Faculté de Pharmacie, Centre Hospitalier Régional Universitaire Nantes, France Abstract The occurrence of subcutaneous nodules at the injection site is one of the complications of diphtheria-tetanus-pertussis-poliomyelitis vaccination, but the causes and mechanisms involved are still poorly understood. An experimental study in the New Zealand rabbit enabled us to determine the frequency of occurrence of these nodules, how long they persist and the histopathologic features of the cells involved. Aluminium (Al) assays by electrothermal atomic absorption spectrometry allowed us to study concentrations both in nodules and the organism (serum, normal skin). The results show an absence of Al diffusion outside nodules, a correlation between infiltrate intensity and Al concentration in nodules and modifications in the histological constituents of nodule cells. The histological picture indicates a foreign body reaction to Al. All these data underscore the role of Al in the formation of early postvaccinal nodules at the injection site. http://www.ncbi.nlm.nih.gov/pubmed/?term=1589878 “All these data underscore the role of Aluminum in the formation of early postvaccinal nodules at the injection site.” [this is one of the earliest examples of “nodules at the injection site” mentioned in the medical literature. As you’ll see, eventually this phenomenon leads to a new disorder, Macrophagic Myofasciitis and the coining of the term “ASIA,” a wide variety of nearly 100 recognized autoimmune and inflammatory disorders induced by the Aluminum adjuvant in vaccines] “Generally, the intake of aluminium from foods is less than 1% of that consumed by individuals using aluminium-containing pharmaceuticals. Currently the real scientific question is not the amount of aluminium in foods but the availability of the aluminium in foods and the sensitivity of some population groups to aluminium.” Ciba Foundation Symposium • 1992 Dietary and other sources of aluminium intake Author information Greger JL. Department of Nutritional Sciences University of Wisconsin, Madison 53706 Abstract Aluminium in the food supply comes from natural sources including water, food additives, and contamination by aluminium utensils and containers. Most unprocessed foods, except for certain herbs and tea leaves, contain low (< 5 micrograms Al/g) levels of aluminium. Thus most adults consume 1-10 mg aluminium daily from natural sources. Cooking in aluminium containers often results in statistically significant, but not practically important, increases in the aluminium content of foods. Intake of aluminium from food additives varies greatly (0 to 95 mg Al daily) among residents in North America, with the median intake for adults being about 24 mg daily. Generally, the intake of aluminium from foods is less than 1% of that consumed by individuals using aluminium-containing pharmaceuticals. Currently the real scientific question is not the amount of aluminium in foods but the availability of the aluminium in foods and the sensitivity of some population groups to aluminium. Several dietary factors, including citrate, may affect the absorption of aluminium. Aluminium contamination of soy-based formulae when fed to premature infants with impaired kidney function and aluminium contamination of components of parenteral solutions (i.e. albumin, calcium and phosphorus salts) are of concern. http://www.ncbi.nlm.nih.gov/pubmed/?term=1490425 Food And Chemical Toxicology • May 1993 Neurotoxic effect of enteral aluminium Author information Bilkei-Gorzó A. Pharmacological Department Chinoin Pharmaceutical and Chemical Works Co. Ltd Budapest, Hungary Abstract Long Evans rats were treated for 90 days with water-soluble, insoluble or chelated aluminium compounds. The daily treatments given were as follows: controls, NaCl (100 mg/kg body weight) plus citric acid (30 mg/kg); AlCl3 (30 or 100 mg/kg); Al(OH)3 (100 mg/kg) plus citric acid (30 mg/kg); Al(OH)3 (300 mg/kg). Their learning ability was determined in the labyrinth test at day 90, and the choline-acetyltransferase, acetylcholinesterase activity and aluminium content of the brains were measured. Soluble and chelated aluminium compounds seriously worsened the learning ability, and the aluminium content of the brain was elevated. Acetylcholinesterase activity increased and choline-acetyltransferase activity decreased, resulting in a diminished cholinergic activity, which is a characteristic of Alzheimer’s disease. http://www.ncbi.nlm.nih.gov/pubmed/?term=8505021 “... resulting in a diminished cholinergic activity, which is a characteristic of Alzheimer’s disease.” Vaccine • 1993 Adjuvants— a balance between toxicity and adjuvanticity Author information Gupta RK1, Relyveld EH, Lindblad EB, Bizzini B, Ben-Efraim S, Gupta CK. Massachusetts Public Health Biologic Laboratories Boston 02130 Abstract Adjuvants have been used to augment the immune response in experimental immunology as well as in practical vaccination for more than 60 years. The chemical nature of adjuvants, their mode of action and the profile of their side effects are highly variable. Some of the side effects can be ascribed to an unintentional stimulation of different mechanisms of the immune system whereas others may reflect general adverse pharmacological reactions. The most common adjuvants for human use today are still aluminium hydroxide, aluminium phosphate and calcium phosphate although oil emulsions, products from bacteria and their synthetic derivatives as well as liposomes have also been tested or used in humans. In recent years monophosphoryl lipid A, ISCOMs with Quil-A and Syntex adjuvant formulation (SAF) containing the threonyl derivative of muramyl dipeptide have been under consideration for use as adjuvants in humans. At present the choice of adjuvants for human vaccination reflects a compromise between a requirement for adjuvanticity and an acceptable low level of side effects. http://www.ncbi.nlm.nih.gov/pubmed/8447157 “At present the choice of adjuvants for human vaccination reflects a compromise between a requirement for adjuvanticity and an acceptable low level of side effects.” [today those “Side Effects” are at epidemic proportions] “Vaccines adsorbed onto aluminium salts are a more frequent cause of local post-vaccinal reactions than plain vaccines.” Roczniki Panstwowego Zakladu Higieny • 1993 Aluminum as an adjuvant in vaccines and post-vaccine reactions Author information Fiejka M1, Aleksandrowicz J. Zakladu Badania Surowic Warszawie Abstract Aluminium compounds have been widely used as adjuvants in prophylactic and therapeutic vaccines. Adjuvants are able to stimulate the immune system in a nonspecific manner, i.e. high antibody level can be obtained with minimal dose of the antigen and with reduced number of inoculations. Adjuvants use has been mostly empirically determined by such factors as efficacy and safety. The mechanism of action of the aluminium adjuvants is not completely understood and is very complex. The basic factors of the mode of action: 1) the complex of antigen and aluminium gel is more immunogenic in structure than free antigen, 2) effect “depot”--The antigen stimulus last longer, 3) the production of local granulomas. Vaccines adsorbed onto aluminium salts are a more frequent cause of local post-vaccinal reactions than plain vaccines. 5-10% those vaccinated can develop a nodule lasting several weeks at the injection site. In some rare cases the nodules may become inflammatory and even turn into an aseptic abscess. The nodules persisting more than 6 weeks may indicate development of aluminium hypersensitivity. Finally aluminium adjuvant immunogens induce the production of IgE antibodies. http://www.ncbi.nlm.nih.gov/pubmed/?term=8235346 Annali dell’istituto Superiore di Sanita • 1993 Behavioural effects of gestational exposure to aluminium Author information Rankin J1, Sedowofia K, Clayton R, Manning A. Institute of Cell, Animal and Population Biology Edinburgh, UK Abstract The involvement of aluminium in the aetiology of a number of human pathological diseases has altered its status from being a nontoxic, nonabsorbable, harmless element. This maybe of particular concern to the developing foetus which is more susceptible to agents and at lower levels than the adult. Little attention has been given to aluminium’s potential reproductive toxicity until recently and further research is required for a full evaluation of its toxicity. Our preliminary results demonstrate behavioural and neurochemical alterations in the offspring of mice exposed to aluminium during gestation. Further, the effects of such exposure are also present in the adult animal suggesting persistent changes in behaviour following prenatal exposure. http://www.ncbi.nlm.nih.gov/pubmed/8129261 “Our preliminary results demonstrate behavioural and neurochemical alterations in the offspring of mice exposed to aluminium during gestation. Further, the effects of such exposure are also present in the adult animal suggesting persistent changes in behaviour following prenatal exposure.” Vaccine • 1993 Studies on the toxicities of aluminium hydroxide and calcium phosphate as immunological adjuvants for vaccines Author information Goto N1, Kato H, Maeyama J, Eto K, Yoshihara S. Department of Safety Research on Biologics National Institute of Health, Tokyo, Japan Abstract Aluminium hydroxide (Al) and calcium phosphate (Ca) have been used for many years as immunological adjuvants for biologicals. We investigated the toxic effects of both adjuvants with different physical properties. Al-gel elicited vascular permeability-increasing and toxic effects to macrophages (M phi), while its haemolytic effect was weak. Ca-gel elicited a significantly stronger haemolytic effect, but no other toxic effect. Incubation of M phi or polymorphonuclear leucocytes with Al-suspension resulted in the largest release of lactate dehydrogenase. Ca-suspension caused haemolysis of about 50% of that caused by Ca-gel. http://www.ncbi.nlm.nih.gov/pubmed/8212836 “Aluminum-gel elicited vascular permeability-increasing and toxic effects to macrophages ...” Brazilian Journal Of Medical And Biological Research • January 1994 Effects of aluminum on the mechanical and electrical activity of the Langendorff-perfused rat heart Author information Gomes MG1, Moreira CA, Mill JG, Massaroni L, Oliveira EM, Stefanon I, Vassallo DV. Departamento de Ciências Fisiológicas Universidade Federal do Espírito Santo Vitória, Brasil Abstract The effect of aluminum (Al3+) chloride (1, 5, 10, 50 and 100 microM) on myocardial electromechanical activity was studied in 10 Langendorff-perfused hearts from adult female Wistar rats. Al3+ decreased the development of isovolumic systolic pressure from 34.3 +/- 2.95 mmHg under control conditions to 11.8 +/- 1.53 mmHg at 100 microM AlCl3 (P < 0.01) (diastolic pressure = 0 mmHg). The atrial and ventricular rates also decreased, but only with AlCl3 concentrations greater than 1 microM (from 180 +/- 5 to 94 +/- 11 bpm for atrial rate and from 180 +/- 5 to 78 +/- 7 bpm for ventricular rate). Reduction of coronary flow was also observed, reaching 60% at 100 microM Al3+. A delay in atrioventricular conduction occurred at 10 microM Al3+, increasing progressively up to 100 microM (62.3 +/- 4 ms in the Al(3+)-free solution to 143 +/- 34 ms in the presence of 100 microM Al3+, P < 0.01, ANOVA). QRS duration did not change as a function of increasing Al3+ concentrations (37.1 +/- 1.7 ms in the Al(3+)-free solution vs 32.1 +/- 1.6 ms in the presence of 100 microM Al3+). No qualitative changes in ECG were observed. These data show that the toxic effects of Al3+ on the myocardium are reflected in reduced systolic pressure development and coronary flow and increased PR interval. These effects are discussed in terms of the inhibition of nucleotide hydrolysis by Al3+. http://www.ncbi.nlm.nih.gov/pubmed/8173535 “These data show that the toxic effects of aluminum chloride on the myocardium are reflected in reduced systolic pressure development and coronary flow and increased PR interval.” Food Additives And Contaminants • January 1995 Estimates of dietary exposure to aluminium Author information Pennington JA1, Schoen SA. Food and Drug Administration Center for Food Safety and Applied Nutrition Washington, DC 20204, USA Abstract Daily intakes of aluminium were estimated for 14 age-sex groups based on the Food and Drug Administration’s (FDA) Total Diet Study dietary exposure model. The aluminium content of the core foods of the FDA Total Diet Study were determined by analyses, recipe calculation, or literature values and coupled with information on food consumption from the 1987-88 US Department of Agriculture Nationwide Food Consumption Survey. Estimates of aluminium intakes ranged from 0.7 mg/day for 6-11-month-old infants to 11.5 mg/day for 14-16-year-old males. Average intakes for adult men and women were 8-9 and 7 mg/day, respectively. The major contributors to daily intake of aluminium were foods with aluminium-containing food additives, e.g. grain products and processed cheese. http://www.ncbi.nlm.nih.gov/pubmed/7758626 “Estimates of aluminium intakes ranged from 0.7 mg/day for 6-11-month-old infants to 11.5 mg/day for 14-16-year-old males. Average intakes for adult men and women were 8-9 and 7 mg/day, respectively.” “Although aluminum (Al) contributes to a variety of cognitive dysfunctions and mental diseases, the underlying mechanisms of Al interactions with the nervous system are still unknown.” Experimental Neurology • July 1995 Aluminum impairs hippocampal long-term potentiation in rats in vitro and in vivo Author information Platt B1, Carpenter DO, Büsselberg D, Reymann KG, Riedel G. New York State Department of Health Wadsworth Center for Laboratories and Research, Albany 12201, USA Abstract Although aluminum (Al) contributes to a variety of cognitive dysfunctions and mental diseases, the underlying mechanisms of Al interactions with the nervous system are still unknown. We have studied the action of Al on synaptic transmission and long-term potentiation (LTP) by performing electrophysiological recordings both in vivo, using freely moving animals, and in vitro, using hippocampal slices. In vivo recordings of the population spikes (PSs) of dentate gyrus granule cells in response to medial perforant path stimulation were performed on both acutely and chronically (Al each day for 5 days) intraventricularly injected animals. Acute Al-infusion (calculated brain concentrations of 0.27, 0.68, and 2.7 micrograms/ml) had no influence on baseline values. Al at 0.27 microgram/ml did not alter the induction and maintenance of LTP, but 0.68 and especially 2.7 micrograms/ml Al lead to a reduction in LTP, and the potentiation declined to baseline within 2 h. In chronic animals their neuronal responsiveness was reduced and in 30% of the rats the PS was completely lost. High-frequency tetanization failed to induce LTP. In slices, field potentials were evoked stimulating Schaffer collaterals and recording pyramidal cells of the CA1 region. Bath application of 0.68 microgram/ml Al increased the baseline amplitude of the PS slightly, whereas 2.7 micrograms/ml decreased the amplitude and concentrations > 5.4 micrograms/ml blocked the PS completely. Induction of LTP in the presence of 0.68 microgram/ml Al led to a smaller increase of the PS amplitude compared to controls, but the duration of LTP was not affected. In the presence of 2.7 micrograms/ml Al LTP was further reduced and declined to baseline levels within 60 min. Given that LTP is a form of synaptic plasticity underlying some forms of learning, our data suggest that both preparations are suitable models for investigating actions of Al-induced neurotoxicity. http://www.ncbi.nlm.nih.gov/pubmed/?term=7672040 Neurotoxicology And Teratology • July 1995 Reproductive and developmental toxicity of aluminum: a review Author information Domingo JL1. Laboratory of Toxicology and Biochemistry School of Medicine, Rovira i Virgili University, Reus, Spain Abstract It is well known that aluminum is a developmental toxicant when administered parenterally. However, until recently, there was little concern about embryo/fetal consequences of aluminum ingestion because bioavailability was considered low. The importance of the route of exposure and the chemical form of the aluminum compound on the developmental toxicity of this element are now well established. Although no evidence of maternal and embryo/fetal toxicity was observed when high doses of aluminum hydroxide were given orally to pregnant rats and mice during organogenesis, signs of maternal and developmental toxicity were found in mice when aluminum hydroxide was given concurrently with citric or lactic acids. On the other hand, studies in rabbits have shown that aluminum-induced behavioral toxicity is greater in adult and aged animals than in young adults. However, maternal dietary exposure to excess A1 during gestation and lactation which did not produce maternal toxicity would be capable of causing permanent neurobehavioral deficits in weanling mice and rats. Adverse effects of parenteral aluminum administration on the mouse male reproductive system have also been reported. The embryo/fetal toxicity of aluminum administration, the potential reproductive toxicology of aluminum exposure, and the neurodevelopmental effects of aluminum are here reviewed. http://www.ncbi.nlm.nih.gov/pubmed/?term=7565498 “The embryo/fetal toxicity of aluminum administration, the potential reproductive toxicology of aluminum exposure, and the neurodevelopmental effects of aluminum are here reviewed.” Vaccine • October 1995 Adjuvants for human vaccines— current status, problems and future prospects Author information Gupta RK1, Siber GR. Massachusetts Public Health Biologic Laboratories State Laboratory Institute, Boston 02130, USA Abstract Adjuvants help antigen to elicit an early, high and long-lasting immune response with less antigen, thus saving on vaccine production costs. In recent years, adjuvants received much attention because of the development of purified, subunit and synthetic vaccines which are poor immunogens and require adjuvants to evoke the immune response. With the use of adjuvants immune response can be selectively modulated to major histocompatibility complex (MHC) class I or MHC class II and Th1 or Th2 type, which is very important for protection against diseases caused by intracellular pathogens such as viruses, parasites and bacteria (Mycobacterium). A number of problems are encountered in the development and use of adjuvants for human vaccines. The biggest issue with the use of adjuvants for human vaccines, particularly routine childhood vaccines, is the toxicity and adverse side-effects of most of the adjuvant formulations. At present the choice of adjuvants for human vaccination reflects a compromise between a requirement for adjuvanticity and an acceptable low level of side-effects. Other problems with the development of adjuvants include restricted adjuvanticity of certain formulations to a few antigens, use of aluminum adjuvants as reference adjuvant preparations under suboptimal conditions, non-availability of reliable animal models, use of non-standard assays and biological differences between animal models and humans leading to the failure of promising formulations to show adjuvanticity in clinical trials. The most common adjuvants for human use today are still aluminum hydroxide and aluminum phosphate, although calcium phosphate and oil emulsions also have some use in human vaccinations. During the last 15 years much progress has been made on development, isolation and chemical synthesis of alternative adjuvants such as derivatives of muramyl dipeptide, monophosphoryl lipid A, liposomes, QS21, MF-59 and immunostimulating complexes (ISCOMS). Other areas in adjuvant research which have received much attention are the controlled release of vaccine antigens using biodegradable polymer microspheres and reciprocal enhanced immunogenicity of protein-polysaccharide conjugates. Biodegradable polymer microspheres are being evaluated for targeting antigens on mucosal surfaces and for controlled release of vaccines with an aim to reduce the number of doses required for primary immunization. Reciprocal enhanced immunogenicity of protein-polysaccharide conjugates will be useful for the development of combination vaccines. http://www.ncbi.nlm.nih.gov/pubmed/8585280 “Adjuvants help antigen to elicit an early, high and long-lasting immune response with less antigen, thus saving on vaccine production costs. Journal Of Inorganic Biochemistry • November 1995 Spectroscopic study of the interaction of aluminum ions with human transferrin Author information Tang S1, MacColl R, Parsons PJ. Department of Environmental Health and Toxicology School of Public Health, State University of New York at Albany, USA Abstract Transferrin is the plasma protein responsible for transporting Fe3+ from the absorption to the utilization site. Interactions of apo- and holo-transferrin with Al3+ were studied by circular dichroism (CD), UV-visible, and fluorescence spectrometry. Binding of Al3+ to both metal-ion binding sites of apo-transferrin was confirmed by fluorescence studies. No interaction of Al3+ with holo-transferrin was observed, indicating that Al3+ cannot displace Fe3+ under the experimental conditions employed. An increase in tryptophan fluorescence (lambda max at 330 nm) by excitation at either 280 or 295 nm was observed after Al3+ interaction with apo-transferrin. There was no shift in wavelength of the fluorescence band of apo-transferrin after interaction with Al3+, but the intensity did increase. Since excitation at 295 nm is specific for tryptophan residues, tryptophan but not tyrosine must be responsible for the change in fluorescence intensity. Decreased fluorescence is the result of Fe3+ binding to apo-transferrin. The CD spectrum of apo-transferrin was slightly affected in the far UV by Al3+ binding, but a salient change was noted in the near UV at approximately 288 nm where tyrosine and tryptophan absorb. It is concluded that a small conformational change in the protein was induced by Al3+ binding to apo-transferrin. http://www.ncbi.nlm.nih.gov/pubmed/8586971 “It is concluded that a small conformational change in the protein was induced by Al3+ binding to apo-transferrin.” Biochimica et Biophysica Acta • January 1996 Altered calcium homeostasis: a possible mechanisms of aluminium-induced neurotoxicity Author information Julka D1, Gill KD. Department of Biochemistry Postgraduate Institute of Medical Education and Research Chandigarh, India Abstract The effect of aluminium, A1(3+) (10 mg/kg body weight/day i.p.) for a period of 4 weeks was examined on the calcium homeostatic mechanisms in rat central nervous system. Incubation of synaptosomes prepared from rat brain, with aluminium in vitro had a detrimental effect on the activity of Ca2+ ATPase which could be reversed completely on exogenous addition of desferrioxamine (10 microM) and partially with glutathione (1 mM). In vivo administration also revealed a similar observation. A marked increase in the levels of intracellular calcium was observed after aluminium treatment. Concomitant to the increased levels of intracellular calcium, there was an increase in the levels of lipid peroxidation and a consequent decrease in fluidity of synaptic plasma membranes. In addition, aluminium also had an inhibitory effect on the depolarization-induced calcium uptake which was found to be of a competitive type. The biological activity of calcium regulatory proteins calmodulin and protein kinase C was considerably affected by aluminium. The results suggest that aluminium exerts its toxic effects by modification of the intracellular calcium messenger system with detrimental consequences on neuronal functioning. http://www.ncbi.nlm.nih.gov/pubmed/8611646 “The results suggest that aluminium exerts its toxic effects by modification of the intracellular calcium messenger system with detrimental consequences on neuronal functioning.” “Macrophages at the base of human gut associated lymphoid tissue (GALT), become loaded early in life with dark granular pigment that is rich in aluminium ...” Gut • March 1996 Characterisation of inorganic microparticles in pigment cells of human gut associated lymphoid tissue Author information Powell JJ1, Ainley CC, Harvey RS, Mason IM, Kendall MD, Sankey EA, Dhillon AP, Thompson RP. Gastrointestinal Laboratory, Rayne Institute St Thomas’ Hospital, London Abstract Macrophages at the base of human gut associated lymphoid tissue (GALT), become loaded early in life with dark granular pigment that is rich in aluminium, silicon, and titanium. The molecular characteristics, intracellular distribution, and source of this pigment is described. Laser scanning and electron microscopy showed that pigmented macrophages were often closely related to collagen fibres and plasma cells in GALT of both small and large intestine and contained numerous phagolysosomes, previously described as granules, that are rich in electron dense submicron sized particles. Morphological assessment, x ray microanalysis, and image electron energy loss spectroscopy showed three distinct types of microparticle: type I - spheres of titanium dioxide, 100-200 nm diameter, characterised as the synthetic food-additive polymorph anatase; type II - aluminosilicates, < 100-400 nm in length, generally of flaky appearance, often with adsorbed surface iron, and mostly characteristic of the natural clay mineral kaolinite; and type III - mixed environmental silicates without aluminium, 100-700 nm in length and of variable morphology. Thus, this cellular pigment that is partly derived from food additives and partly from the environment is composed of inert inorganic microparticles and loaded into phagolysosomes of macrophages within the GALT of all human subjects. These observations suggest that the pathogenicity of this pigment should be further investigated since, in susceptible individuals, the same intracellular distribution of these three types of submicron particle causes chronic latent granulomatous inflammation. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1383068/ “... the mechanisms of Aluminum neurotoxicity are reviewed ...” Journal Of Toxicology And Environmental Health • August 1996 Can the mechanisms of aluminum neurotoxicity be integrated into a unified scheme? Author information Strong MJ1, Garruto RM, Joshi JG, Mundy WR, Shafer TJ. Department of Clinical Neurological Sciences University of Western Ontario, London, Canada mstrong@julian.uwo.ca Abstract Regardless of the host, the route of administration, or the speciation, aluminum is a potent neurotoxicant. In the young adult or developmentally mature host, the neuronal response to Al exposure can be dichotomized on morphological grounds. In one, intraneuronal neurofilamentous aggregates are formed, whereas in the other, significant neurochemical and neurophysiological perturbations are induced without neurofilamentous aggregate formation. Evidence is presented that the induction of neurofilamentous aggregates is a consequence of alterations in the posttranslational processing of neurofilament (NF), particularly with regard to phosphorylation state. Although Al has been reported to impact on gene expression, this does not appear to be critical to the induction of cytoskeletal pathology. In hosts responding to Al exposure without the induction of cytoskeletal pathology, impairments in glucose utilization, agonist-stimulated inositol phosphate accumulation, free radical-mediated cytotoxicity, lipid peroxidation, reduced cholinergic function, and altered protein phosphorylation have been described. The extent to which these neurochemical modifications correlate with the induction of a characteristic neurobehavioral state is unknown. In addition to these paradigms, Al is toxic in the immediate postnatal interval. Whether unique mechanisms of toxicity are involved during development remains to be determined. In this article, the mechanisms of Al neurotoxicity are reviewed and recommendations are put forth with regard to future research. Primary among these is the determination of the molecular site of Al toxicity, and whether this is based on Al substitution for divalent metals in a number of biological processes. Encompassed within this is the need to further understand the genesis of host- and developmental-specific responses. http://www.ncbi.nlm.nih.gov/pubmed/?term=8772801 Journal Of Toxicology And Environmental Health • August 1996 Speciation of aluminum in biological systems Author information Harris WR1, Berthon G, Day JP, Exley C, Flaten TP, Forbes WF, Kiss T, Orvig C, Zatta PF. Department of Chemistry University of Missouri-St. Louis 63121 USA Abstract As a “hard”, trivalent metal ion, Al3- binds strongly to oxygen-donor ligands such as citrate and phosphate. The aqueous coordination chemistry of Al is complicated by the tendency of many Al complexes to hydrolyze and form polynuclear species, many of which are sparingly soluble. Thus there is considerable variation among the Al stability constants reported for several important ligands. The complexity in the aqueous chemistry of Al has also affected Al toxicity studies, which have often utilized poorly characterized Al stock solutions. Serum fractionation studies show that most Al is protein bound, primarily to the serum iron transport protein transferrin. Albumin appears to play little, if any, role in serum transport. There is little agreement as to the speciation of the remaining low-molecular mass fraction of serum Al. The lability of the Al3+ion precludes the simple separation and identification of individual Al complexes. Computational methods are available for detailed computer calculations of the Al speciation in serum, but efforts in this area have been severely hampered by the uncertainties regarding the stability constants of the low molecular mass Al complexes with citrate, phosphate, and hydroxide. Specific recommendations for further research on Al speciation include: (1) Determine more accurate Al stability constants with critical low molecular mass ligands such as citrate and phosphate; (2) supplement traditional potentiometric studies on Al complexes with data from other techniques such as 27Al-NMR and accelerator mass spectrometry with 26Al; (3) develop new methods for generating reliable linear free energy relationships for Al complexation; (4) determine equilibrium and rate constants for Al binding to transferrin at 37 degrees C; (5) confirm the possible formation of low-molecular-mass Alprotein complexes following desferrioxamine therapy; (6) continue research efforts to incorporate kinetic considerations into the present equilibrium speciation calculations; (7) improve methods for preparing chemically well-defined stock solutions for toxicological studies; (8) incorporate more detailed speciation data into studies on Al toxicity and pharmacokinetics; and (9) incorporate more detailed speciation data into future epidemiological studies on the relationship between Al toxicity and various water quality parameters. http://www.ncbi.nlm.nih.gov/pubmed/?term=8772798 [this report explains why determining the fate of aluminum in the human body is so difficult] Journal Of Toxicology And Environmental Health • August 1996 What we know and what we need to know about developmental aluminum toxicity Author information Golub MS1, Domingo JL. Department of Internal Medicine University of California, Davis 95616, USA Abstract Information concerning developmental aluminum (Al) toxicity is available from clinical studies and from animal testing. An Al toxicity syndrome including encephalopathy, osteomalacia, and anemia has been reported in uremic children receiving dialysis. In addition, some components of the syndrome, particularly osteomalacia, have been reported in non-dialyzed uremic children receiving Al-based phosphate binders, nonuremic infants receiving parenteral nutrition with Al-containing fluids, and nonuremic infants given high doses of Al antacids. The number of children in clinical populations that are at risk of Al toxicity is not known and needs to be determined. Work in animal models (rats, mice, and rabbits) demonstrates that Al is distributed transplacentally and is present in milk. Oral Al administration during pregnancy produces a syndrome including growth retardation, delayed ossification, and malformations at doses that also lead to reduced maternal weight gain. The severity of the effects is highly dependent on the form of Al administered. In the postnatal period, reduced pup weight gain and effects on neuromotor development have been described as a result of developmental exposures. The significance of these findings for human health requires better understanding of the amount and bioavailability of Al in food, drinking water, and medications and from sources unique to infants and children such as breast milk, soil ingestion, and medications used specifically by pregnant women and children. We also need a better understanding of the unique biological actions of Al that may occur during developmental periods, and unique aspects of the developing organism that make it more or less susceptible to Al toxicity. http://www.ncbi.nlm.nih.gov/pubmed/?term=8772800 “The number of children in clinical populations that are at risk of Al toxicity is not known and needs to be determined. Work in animal models demonstrates that Aluminum is distributed transplacentally and is present in milk.” Journal Of Toxicology And Environmental Health • August 1996 Aluminum toxicokinetics Author information Exley C1, Burgess E, Day JP, Jeffery EH, Melethil S, Yokel RA. Department of Chemistry, Keele University, Staffordshire United Kingdom cha38@keele.ac.uk Abstract In this study of the toxicokinetics of aluminum we have examined some of the fundamental issues that currently define our understanding of the toxicology of aluminum in humans. There is a vast literature on this subject, and it was not our aim to review this literature but to use it to develop our understanding of the toxicokinetics of aluminum and to identify critical and unresolved issues related to its toxicity. In undertaking this task we have chosen to define the term toxicokinetics to encompass those factors that influence both the lability of aluminum in a body and the sites at which aluminum is known to accumulate, with or without consequent biological effect. We have approached our objective from the classical pharmacological approach of ADME: the absorption, distribution, metabolism, and excretion of aluminum. This approach was successful in identifying several key deficits in our understanding of aluminum toxicokinetics. For example, we need to determine the mechanisms by which aluminum crosses epithelia, such as those of the gastrointestinal tract and the central nervous system, and how these mechanisms influence both the subsequent transport and fate of the absorbed aluminum and the concomitant nature and severity of the biological response to the accumulation of aluminum. Our hope in highlighting these unresolved issues (summarized in Table 1) is that they will be addressed in future research. http://www.ncbi.nlm.nih.gov/pubmed/8772799 “... we need to determine the mechanisms by which aluminum crosses epithelia, such as those of the gastrointestinal tract and the central nervous system, and how these mechanisms influence both the subsequent transport and fate of the absorbed aluminum and the concomitant nature and severity of the biological response to the accumulation of aluminum.” “Subtle neurocognitive and psychomotor effects and electroencephalograph (EEG) abnormalities have been reported at plasma Aluminum levels as low as 50 micrograms/L. Infants could be particularly susceptible to Al accumulation and toxicity ...” Journal Of Toxicology And Environmental Health • August 1996 Status and future concerns of clinical and environmental aluminum toxicology Author information Flaten TP1, Alfrey AC, Birchall JD, Savory J, Yokel RA. Department of Chemistry, Norwegian University of Science and Technology Trondheim, Norway trond.flaten@avh.unit.no Abstract A wide range of toxic effects of aluminum (Al) have been demonstrated in plants and aquatic animals in nature, in experimental animals by several routes of exposure, and under different clinical conditions in humans. Aluminum toxicity is a major problem in agriculture, affecting perhaps as much as 40% of arable soils in the world. In fresh waters acidified by acid rain, Al toxicity has led to fish extinction. Aluminum is a very potent neurotoxicant. In humans with chronic renal failure on dialysis, Al causes encephalopathy, osteomalacia, and anemia. There are also reports of such effects in certain patient groups without renal failure. Subtle neurocognitive and psychomotor effects and electroencephalograph (EEG) abnormalities have been reported at plasma Al levels as low as 50 micrograms/L. Infants could be particularly susceptible to Al accumulation and toxicity, reduced renal function being one contributory cause. Recent reports clearly show that Al accumulation occurs in the tissues of workers with long-term occupational exposure to Al dusts or fumes, and also indicate that such exposure may cause subtle neurological effects. Increased efforts should be directed toward defining the full range of potentially harmful effects in humans. To this end, multidisciplinary collaborative research efforts are encouraged, involving scientists from many different specialties. Emphasis should be placed on increasing our understanding of the chemistry of Al in biological systems, and on determining the cellular and molecular mechanisms of Al toxicity. http://www.ncbi.nlm.nih.gov/pubmed/?term=8772797 New England Journal Of Medicine • May 1997 Aluminum Neurotoxicity in Preterm Infants Receiving Intravenous-Feeding Solutions Nicholas J. Bishop, M.D., Ruth Morley, M.B., B.Chir., J. Philip Day, Ph.D., and Alan Lucas, M.D. BACKGROUND Aluminum, a contaminant of commercial intravenous-feeding solutions, is potentially neurotoxic. We investigated the effect of perinatal exposure to intravenous aluminum on the neurologic development of infants born prematurely. METHODS We randomly assigned 227 premature infants with gestational ages of less than 34 weeks and birth weights of less than 1850 g who required intravenous feeding before they could begin enteral feeding to receive either standard or specially constituted, aluminum-depleted intravenous-feeding solutions. The neurologic development of the 182 surviving infants who could be tested was assessed by using the Bayley Scales of Infant Development at 18 months of age. RESULTS The 90 infants who received the standard feeding solutions had a mean (±SD) Bayley Mental Development Index of 95±22, as compared with 98±20 for the 92 infants who received the aluminum-depleted solutions (P = 0.39). In a planned subgroup analysis of infants in whom the duration of intravenous feeding exceeded the median and who did not have neuromotor impairment, the mean values for the Bayley Mental Development Index for the 39 infants who received the standard solutions and the 41 infants who received the aluminum-depleted solutions were 92±20 and 102±17, respectively (P = 0.02). The former were significantly more likely (39 percent, vs. 17 percent of the latter group; P = 0.03) to have a Mental Development Index of less than 85, increasing their risk of subsequent educational problems. For all 157 infants without neuromotor impairment, increasing aluminum exposure was associated with a reduction in the Mental Development Index (P = 0.03), with an adjusted loss of one point per day of intravenous feeding for infants receiving the standard solutions. CONCLUSIONS In preterm infants, prolonged intravenous feeding with solutions containing aluminum is associated with impaired neurologic development. http://www.nejm.org/doi/full/10.1056/NEJM199705293362203 “In preterm infants, prolonged intravenous feeding with solutions containing aluminum is associated with impaired neurologic development.” Molecular And Chemical Neuropathology • September 1997 Aluminum potentiates glutamate-induced calcium accumulation and iron-induced oxygen free radical formation in primary neuronal cultures Author information Mundy WR1, Freudenrich TM, Kodavanti PR. Neurotoxicology Division US Environmental Protection Agency Research Triangle Park, NC 27711, USA Abstract Aluminum is a neurotoxic metal that may be involved in the progression of neurodegenerative diseases, including Alzheimer disease and amyotrophic lateral sclerosis (ALS). Although the mechanism of action is not known, aluminum has been shown to alter Ca2+ flux and homeostasis, and facilitate peroxidation of membrane lipids. Since abnormal increases of intracellular Ca2+ and oxygen free radicals have both been implicated in pathways leading to neurodegeneration, we examined the effect of aluminum on these parameters in vitro using primary cultures of cerebellar granule cells. Exposure to glutamate (1-300 microM) caused a concentration-dependent uptake of 45Ca in granule cells to a maximum of 280% of basal. Pretreatment with AlCl3 (1-1000 microM) had no effect on 45Ca accumulation, but increased the uptake induced by glutamate. Similarly, AlCl3 had no effect on intracellular free Ca2+ levels measured using fluorescent probe fura-2, but potentiated the increase induced by glutamate. The production of reactive oxygen species (ROS) was examined using the fluorescent probe dichlorofluorescin. By itself, AlCl3 had little effect on ROS production. However, AlCl3 pretreatment potentiated the ROS production induced by 50 microM Fe2+. These results suggest that aluminum may facilitate increases in intracellular Ca2+ and ROS, and potentially contribute to neurotoxicity induced by other neurotoxicants. http://www.ncbi.nlm.nih.gov/pubmed/9437657 “Aluminum is a neurotoxic metal that may be involved in the progression of neurodegenerative diseases, including Alzheimer disease and amyotrophic lateral sclerosis ... aluminum may facilitate increases in intracellular Ca2+ and ROS, and potentially contribute to neurotoxicity induced by other neurotoxicants.” “Although the mechanisms of aluminum absorption have not been elucidated, both passive and active transcellular processes and paracellular transport are believed to occur.” Critical Reviews In Clinical Laboratory Science • 1997 Aluminum exposure and metabolism Author information Greger JL1, Sutherland JE. Department of Nutritional Sciences University of Wisconsin, Madison 53706, USA Abstract Aluminum (Al) is a nonessential, toxic metal to which humans are frequently exposed. Oral exposure to aluminum occurs through ingestion of aluminum-containing pharmaceuticals and to a lesser extent foods and water. Parenteral exposure to aluminum can occur via contaminated total parenteral nutrition (TPN), intravenous (i.v.) solutions, or contaminated dialysates. Inhalation exposure may be important in some occupational settings. The gut is the most effective organ in preventing tissue aluminum accumulation after oral exposure. Typically gastrointestinal absorption of aluminum from diets is < 1%. Although the mechanisms of aluminum absorption have not been elucidated, both passive and active transcellular processes and paracellular transport are believed to occur. Aluminum and calcium may share some absorptive pathways. Aluminum absorption is also affected by the speciation of aluminum and a variety of other substances, including citrate, in the gut milieu. Not all absorbed or parenterally delivered aluminum is excreted in urine. Low glomerular filtration of aluminum reflects that most aluminum in plasma is nonfiltrable because of complexation to proteins, predominantly transferrin. The importance of biliary secretion of aluminum is debatable and the mechanism(s) is poorly understood and appears to be saturable by fairly low oral doses of aluminum. http://www.ncbi.nlm.nih.gov/pubmed/?term=9405895 “Metal ions are believed to participate in many neurodegenerative conditions.” Metal-Based Drugs • 1997 Metal Ions in Neuroscience C. Ian Ragan Department of Biochemistry and Molecular Biology Neuroscience Research Centre, Merck Sharp and Dohme Research Laboratories Terlings Park, Harlow CM20 2QR, UK Abstract Metal ions are believed to participate in many neurodegenerative conditions. In excitotoxic cell death there is convincing evidence for the participation of Ca 2+ and Zn 2+ ions although the exact molecular mechanisms by which these metals exert their effects are unclear. Only in one instance has the metal binding site of metalloenzymes been exploited for therapeutic purposes and this is the use of Li+ in the treatment of bipolar affective disorder. Again the exact molecular target is not clear but is likely to involve a Mg2+-dependent enzyme of an intracellular signalling pathway. In Parkinson’s disease, the selective loss of dopaminergic neurones in the substantia nigra may be caused by radical-mediated damage and there is good evidence to suggest that Fe2+ or 3+ is important in promoting formation of radical species. The evidence that free radicals are important in mediating other neurodegenerative conditions is less strong but still substantial enough to suggest that removal of reactive oxygen species or preventing their formation may be a valid approach to therapy. Full Report http://www.hindawi.com/archive/1997/532916/abs/ Toxicology And Industrial Health • January 1998 Neurobehavioral alteration in rodents following developmental exposure to aluminum Author information Alleva E1, Rankin J, Santucci D. Behavioural Pathophysiology Section Istituto Superiore di Sanità, Roma, Italy alleva@iss.it Abstract Aluminum (Al) is one of the most abundant metals in the earth’s crust, and humans can be exposed to it from several sources. It is present in food, water, pharmaceutical compounds, and in the environment, e.g., as a result of acid rain leaching it from the soil. Exposure to Al has recently been implicated in a number of human pathologies, but it has not yet been definitely proved that it plays a major causal role in any of them. In this paper we review the effects of developmental exposure of laboratory animals to Al salts as a model for human pathological conditions. The data presented show behavioral and neurochemical changes in the offspring of AL-exposed mouse dams during gestation, which include alterations in the pattern of ultrasonic vocalizations and a marked reduction in central nervous system (CNS) choline acetyltransferase activity. Prenatal Al also affects CNS cholinergic functions under Nerve Growth Factor (NGF) control, as shown by increased central NGF levels and impaired performances in a maze learning task in young-adult mice. The need for more detailed studies to evaluate the risks for humans associated with developmental exposure to Al, as well as the importance of using more than one strain of laboratory animal in the experimental design, is emphasized. http://www.ncbi.nlm.nih.gov/pubmed/9460176 “The data presented show behavioral and neurochemical changes in the offspring of Aluminum-exposed mouse dams during gestation, which include alterations in the pattern of ultrasonic vocalizations and a marked reduction in central nervous system choline acetyltransferase activity. Prenatal Al also affects central nervous system cholinergic functions under Nerve Growth Factor (NGF) control, as shown by increased central NGF levels and impaired performances in a maze learning task in young-adult mice.” Journal Of Inorganic Biochemistry • July 1998 The precipitation of mucin by aluminium Author information Christopher Exley Birchall Centre for Inorganic Chemistry and Materials Science Department of Chemistry, Keele University, Staffordshire, UK cha38@keele.ac.uk Abstract The interactions of Al with a mucin glycopeptide have been studied. A number of specific reactions were identified the nature of which were dependent upon the Al chemistry in the hydration environment. In particular, Al was observed to precipitate mucin and it is suggested that this proceeded via the intercalation of the hydroxide within the hydrated macroreticular network of the mucin biopolymer. This precipitation of mucin was visible by eye and abolished the viscosity of native mucin. Viscometry indicated that Al was bound by mucin at low pH. At pH > 3 Al formed a low molecular weight complex with mucin which was hydrolytically stable and was not precipitated at pH up to 8. In an additional and competitive reaction Al was bound by mucin and the resultant mucin-Al complex was suggested to be the precursor to selfassembled mucin-Al spheres identified in solution, by photon correlation spectroscopy, and in precipitate using selective histochemistry. The majority of these spherical structures were of sub-micron diameter and, through their interaction with each other, were probably responsible for the observed pH-dependent peaks of mucin solution viscosity. The larger spheres, between 20 and 80 microns in diameter, were only identified in isolated mucin/Al precipitates and, being comparatively rare, were unlikely to have influenced solution viscosities. These large spheres were observed to act as possible nucleation sites for the flocculation of mucin/Al precipitate. Al at concentrations as low as 0.015 mM induced changes in the rheological properties of mucin. Considering the ubiquitous nature of mucin and the degree to which it is conserved within biota the interactions of Al with mucin may have wide ranging implications for biological systems. http://www.ncbi.nlm.nih.gov/pubmed/9720305 “Aluminum at concentrations as low as 0.015 mM induced changes in the rheological properties of mucin. Considering the ubiquitous nature of mucin and the degree to which it is conserved within biota the interactions of Aluminum with mucin may have wide ranging implications for biological systems.” Zhongguo Zhong Yao Za Zhi Chinese Journal Of Chinese Materia Medica • December 1998 Influence of alum on intestinal flora in mice Author information Yan M1, Song H, Zhang L, Wang Y, Wu Y, Zhou Z. Institute of Chinese Materia Medica China Academy of Traditional Chinese Medicine Beijing 100700 Abstract OBJECTIVE To observe the influence of alum on the intestinal microecological balance in normal microorganisms. METHOD The mice were administered orally with alum of a small dosage(0.25/ kg) and a large dosage(1 g/kg) for half a month, two months and three months, and a micro flora analysis of the mice was carried out at intervals of the above mentioned administrations. RESULT The intestinal flora in the animals administered with alum was imbalanced. The counts of bifidobacteria and lactobacilli closely related to human physiological activities were decreased. The counts of pathogenic E. Coli significantly increased; and the longer the animals were treated with alum, the stronger the microecological balance was influenced. CONCLUSION Alum could induce imbalance of the normal intestinal flora in mice. http://www.ncbi.nlm.nih.gov/pubmed/12242827 “The counts of pathogenic E. Coli significantly increased; and the longer the animals were treated with alum, the stronger the microecological balance was influenced.” “Aluminum toxicity is well documented and contamination of milk formulas has been implicated as the source of accumulation in bone and brain tissues.” Journal Of Pediatric Gastroenterology And Nutrition • March 1999 Aluminum contents of human milk, cow’s milk, and infant formulas Author information Fernandez-Lorenzo JR1, Cocho JA, Rey-Goldar ML, Couce M, Fraga JM. Service of Neonatology and Metabolic and Nutritional Laboratory Hospital Xeral de Galicia, Santiago de Compostela, Spain Abstract BACKGROUND Aluminum toxicity is well documented and contamination of milk formulas has been implicated as the source of accumulation in bone and brain tissues. The purpose of the current study was to evaluate the aluminum contents of human milk, cow’s milk, and infant formulas. METHODS Aluminum contents were determined by atomic absorption spectrometry in samples of human milk in the colostrum, intermediate, and mature stages; infant formulas from eight manufacturers; and various types and brands of commercially available cow’s milk. RESULTS Mean aluminum concentration was lowest in human milk (23.4 +/- 9.6 microg/l), and did not differ significantly between colostrum, intermediate-stage and mature-stage milk. Mean aluminum concentration was 70 microg/l in cow’s milk, and 226 microg/l in reconstituted infant formulas. Aluminum concentrations in infant formulas differed markedly among manufacturers; concentration in milk from one of the manufacturers was particularly high (mean, 551 microg/l; range, 302-1149 microg/l). These values are for milk reconstituted with aluminum-free water under laboratory conditions; formulas prepared with tap water in the University Hospital’s infant-feeding unit had even higher aluminum content. Experiments showed that aluminum concentration in the high-aluminum milk could be reduced by more than 70% at the manufacturing stage, by using low aluminum components. CONCLUSIONS The results of the present study support the recommendations for infant formula manufacturers to strive to reduce aluminum concentration in their products. http://www.ncbi.nlm.nih.gov/pubmed/?term=10067727 Zhonghua Shi Yan He Lin Chuang Bing Du Xue Za Zhi Chinese Journal Of Experimental And Clinical Virology • June 1999 Influence of aluminum adjuvant to experimental rabies vaccine Author information Lin H1, Perrin P. National Institute for the Control of Pharmaceutical and Biololgical Products Beijing 100050 Abstract OBJECTIVE To study whether the rabies vaccine for human use should contain aluminum adjuvant. “Aluminum adjuvant to rabies vaccine METHODS Testing vaccine antibodies and efficacy (ED50), comparing the effect between aluminum adjuvant contained and non-aluminum adjuvant contained vaccines in a new animal model which accords with the rabies field practice. has no advantages, this paper suggests that RESULTS At fourth and seventh day after immunization, the neutralizing antibody titres of the rabies vaccine containing aluminium adjuvant were much lower than that of the vaccine not containing aluminum adjuvant. In the NIH efficacy test the ED50 of the vaccine containing aluminum adjuvant was 93-132 ng while the ED50 of the vaccine not containing aluminum adjuvant was 221 ng, but the NIH test does not accord with the rabies field practice. In that new animal model, aluminum adjuvant to rabies vaccine had not any promoting effect for preventing and treating rabies. adjuvant had better compare in human bodies. If the CONCLUSION Aluminum adjuvant to rabies vaccine has no advantages, this paper suggests that the vaccines containing and not-containing aluminium adjuvant had better compare in human bodies. If the results are the same as our experiments, the aluminum adjuvant should be eliminated from rabies vaccine for human use. http://www.ncbi.nlm.nih.gov/pubmed/?term=12569779 the vaccines containing and not-containing aluminium results are the same as our experiments, the aluminum adjuvant should be eliminated from rabies vaccine for human use.” Journal Of Leukocyte Biology • February 2000 Particulate adjuvants can induce macrophage survival, DNA synthesis, and a synergistic proliferative response to GM-CSF and CSF-1 Author information Hamilton JA1, Byrne R, Whitty G. Inflammation Research Centre, University of Melbourne Department of Medicine, The Royal Melbourne Hospital Parkville, Victoria, Australia j.hamilton@medicine.unimelb.edu.au Abstract The mode of action of immunological adjuvants is not yet completely understood. Many are particulate. Certain antigen-presenting (dendritic) cell populations belong to the monocyte/macrophage lineage and, like other members of the lineage, in some tissues appear to be short-lived. We report that many poorly degradable, particulate adjuvants, for example, aluminum hydroxide, oil-in-water emulsions, calcium phosphate, and silica, enhance murine bone marrow-derived macrophage survival; induction of DNA synthesis was even observed. No evidence could be found for a requirement for endogenous granulocyte-macrophage colony-stimulating factor (GM-CSF) or macrophage-CSF (M-CSF or CSF-1). Synergy for the proliferative effects was noted in the presence of added GM-CSF or CSF-1. It is suggested from these in vitro findings that one function of certain particulate adjuvants may be to increase by enhanced survival or even proliferation the number of cells available for subsequent antigen presentation and cytokine production. http://www.ncbi.nlm.nih.gov/pubmed/?term=10670584 “The mode of action of immunological adjuvants is not yet completely understood.” Presse Medicale Paris • February 2000 Macrophagic myofasciitis Study and Research Group on Acquired and Dysimmunity-related muscular diseases (GERMMAD) Author information Chérin P1, Laforêt P, Ghérardi RK, Authier FJ, Maisonobe T, Coquet M, Mussini JM, Pellissier JF, Eymard B, Herson S. Service de Médecine Interne Groupe Hospitalier Pitié-Salpêtrière, Paris patrick.cherin@psl.ap-hop-paris.fr Abstract Macrophagic Myofasciitis A most unusual inflammatory myopathy, first described by Germmad had been reported with increasing frequency since 1993 in the leading French myopathology centers. We present our experience with this new disease: macrophagic myofasciitis. CLINICAL FEATURES By November 1999, 70 cases of macrophagic myofasciitis had been recorded since our first description. The first 22 patients (sex ratio M/F = 1:3) referred with the presumptive diagnosis of polymyositis (n = 11), polymyalgia rheumatica (n = 5), mitochondrial cytopathy (n = 4), and congenital myopathy or muscle dystrophy (n = 1 each). Symptoms included myalgia (91%), anthralgia (68%), marked asthenia (55%), muscle weakness (45%), and fever (32%). LABORATORY FINDINGS Abnormal laboratory findings included elevated CK levels (50%), markedly increased erythrocyte sedimentation rate (37%), and myopathic EMG (35%). Muscle biopsy showed a unique myopathological pattern characterized by: i) centripetal infiltration of epimysium, perimysium and perifascicular endomysium by sheets of large cells of the monocyte/macrophage lineage (CD68+, CD1a-, S100-, with a PAS-positive content; ii) absence of necrosis, of both epithelioid and giant cells, and of mitotic figures; iii) presence of occasional CD8+ T-cells; iv) inconspicuous muscle fiber damage. The picture was easily distinguishable from sarcoid myopathy and fasciitis-panniculitis syndromes. The infectious diseases know to be associated with reactive histiocytes, including Whippleís disease, Mycobacterium avium intracellulare infection and malakoplakia, could not be documented. Patients improved under corticosteroid therapy and/or immunomodulatory therapeutic. CONCLUSION A new inflammatory muscle disorder, characterized by a distinctive pathological pattern of macrophagic myofasciitis is emerging in France. http://www.ncbi.nlm.nih.gov/pubmed/10705901 “A most unusual inflammatory myopathy, first described by Germmad had been reported with increasing frequency since 1993 in the leading French myopathology centers. We present our experience with this new disease: macrophagic myofasciitis.” Pharmacology And Toxicology • March 2000 Effects of various aluminium compounds given orally to mice on Al tissue distribution and tissue concentrations of essential elements Author information Dsugaszek M1, Fiejka MA, Graczyk A, Aleksandrowicz JC, Slowikowska M. Institute of Optoelectronics Military University of Technology Warsaw, Poland Abstract To evaluate the risk of gastrointestinal long-term aluminium (Al) exposure, aluminium distribution and the levels of the following essential elements: Ca, Mg, Zn, Cu, and Fe in tissue were studied. Aluminium was administered in drinking water as aluminium chloride, dihydroxyaluminium sodium carbonate or aluminium hydroxide. Mice (strain Pzh:SFIS) were exposed to a total dose of 700 mg Al in long-term treatment (for each Al compound n = 15). Concentrations of Al, Ca, Mg, Zn, Cu, and Fe in stomach, kidneys, bone and liver were analyzed by atomic absorption spectrometry. After AlCl3 treatment, aluminium was found to accumulate in all tested tissues. A significant decrease in Fe concentration in liver and Zn in kidneys was observed in comparison to concentrations of these elements in the control group. In the Al(OH)3-treated group, accumulation of aluminium was observed in bone only and decline of Fe concentration in stomach and Cu in liver and kidney. In the NaAl(OH)2CO3-treated group the increase in Al concentration was significant in bone; there was no change in concentration of essential elements in the examined tissues. The observed aluminium accumulation was not accompanied by changes in Ca and Mg concentration except for bone. This study showed that oral administration as a route of Al exposure can result in diverging accumulation of aluminium in tissues, the concentration depending on the chemical form. Full Report http://onlinelibrary.wiley.com/doi/10.1034/j.1600-0773.2000.pto860308.x/epdf “This study showed that oral administration as a route of Aluminum exposure can result in diverging accumulation of aluminium in tissues ...” “Complaints about ... a mysterious muscle ailment have prompted researchers to take a fresh look at the use of aluminum adjuvants ... This month, as some 70 scientists gathered here for 2 days of often vigorous discussion of the findings about the muscle ailment, a larger question hung over the gathering: Will aluminum be the next battleground in the vaccine wars?” Science • May 2000 Public health: Aluminum is put on trial as a vaccine booster Malakoff D. SAN JUAN, PUERTO RICO—Complaints about vaccine safety and debate over a mysterious muscle ailment have prompted researchers to take a fresh look at the use of aluminum adjuvants, which are used to cause the immune system to react earlier, more potently, and more persistently to the antigen contained in the vaccine. This month, as some 70 scientists gathered here for 2 days of often vigorous discussion of the findings about the muscle ailment, a larger question hung over the gathering: Will aluminum be the next battleground in the vaccine wars? http://www.sciencemag.org/content/288/5470/1323.summary?sid=82b7933f-c912-48c2-b2cf-40874fa78e61 Allergy • September 2000 Aluminium-induced granulomas after inaccurate intradermal hyposensitization injections of aluminium-adsorbed depot preparations Author information Vogelbruch M1, Nuss B, Körner M, Kapp A, Kiehl P, Bohm W. Department of Dermatology and Allergology Hannover Medical University, Germany Abstract BACKGROUND The development of persistent subcutaneous nodules at the injection sites of aluminium-adsorbed hyposensitization solutions is rare. These nodules have been interpreted as a delayed, granulomatous hypersensitivity reaction to aluminium. We report for the first time a case of persistent intradermal granulomas that developed at the sites of inaccurate intradermal, instead of subcutaneous, hyposensitization injections. METHODS An intradermal nodule was excised and processed for histopathology, scanning electron microscopy, and X-ray microanalysis. Intradermal and patch tests with aluminium hydroxide were performed. RESULTS Histologically, the nodule presented a pattern of granulomatous inflammatory reaction surrounding foci of necrotic tissue. Scanning electron microscopy and X-ray microanalysis revealed deposits of aluminium within the granulomas. Patch tests with aluminium hydroxide were negative, and intradermal tests caused persistent intradermal granulomas. Subsequent hyposensitization therapy in our department with the usual subcutaneous injections of aluminium-adsorbed allergen extracts was well tolerated by the patient. CONCLUSIONS Local toxic effects of aluminium may be crucial in the development of persistent intradermal injection-site granulomas. Such intradermal nodules may develop even if the subcutaneous route is well tolerated. We conclude that inaccurate intradermal injections of aluminium-containing solutions have to be strictly avoided. Full Report http://onlinelibrary.wiley.com/doi/10.1034/j.1398-9995.2000.00501.x/full “We report for the first time a case of persistent intradermal granulomas that developed at the sites of inaccurate intradermal, instead of subcutaneous, hyposensitization injections.” Review of Toxicological Literature Abridged Final Report • October 2000 Aluminum Compounds Subcutaneous (s.c.) injections of aluminum produced a significant decrease in iron levels in plasma and the striatum. Significant aluminum accumulation was induced in the striatum, hippocampus, and cortex, and in the hippocampus, TBARS production was increased. Reproductive and Teratological Effects Prepared for Scott Masten, Ph.D., National Institute of Environmental Health Sciences P.O. Box 12233 Research Triangle Park, North Carolina 27709 Contract No. N01-ES-65402 Submitted by Bonnie L. Carson, M.S. Integrated Laboratory Systems, P.O. Box 13501, Research Triangle Park, North Carolina 27709 EXECUTIVE SUMMARY Human Toxicity The effects of aluminum on humans have been extensively reviewed. Overall, there is little indication that aluminum is acutely toxic for the general population; few cases of acute aluminum toxicity during alum therapy (i.e., alum bladder irrigation) have been reported. Prolonged exposure to aluminum, however, can cause systemic toxicity, mainly affecting the gastrointestinal tract and causing neurological and skeletal effects. Aluminum is a potent neurotoxic agent in humans. The association between aluminum and characteristics of Alzheimer’s disease have prompted numerous studies of all sources of intake of aluminum. Epidemiological and case control studies have examined the potential link between oral exposure to aluminum via drinking water and the disease. The causal role of aluminum, however, remains controversial. Some studies have found a significant relationship between the exposure to aluminum in water and an increased risk of Alzheimer’s disease, while other studies have not. There is … convincing evidence that aluminum is the causative agent in dialysis dementia, which is seen in patients undergoing long-term hemodialysis. Developmental effects such as encephalopathy, bone disease, microcytic anemia, and rickets have occurred in premature infants with reduced or failed renal function receiving aluminum-containing treatment (e.g., dialysate or aluminum-based phosphate binders) and in nonuremic infants receiving parenteral nutrition with aluminum-containing fluids or high doses of aluminum antacids. There are no adequate studies of the long-term effects of aluminum exposure on brain development and skeletal maturation. No immunotoxicity studies are available. Few cases, however, report of hypersensitivity to aluminum following dermal application or parenteral administration. There have also been no reports of genetic or reproductive effects in humans. In mice, oral administration of aluminum as aluminum ammonium sulfate decreased dopamine, dihydroxyphenylacetic acid, and homovanillic acid levels in the hypothalamus, and aluminum lactate increased the 2-thiobarbituric acid reactive substances (TBARS) in the brain but decreased brain stem weight. In rats, oral administration of aluminum as the sulfate, nitrate, chloride, hydroxide, citrate, and lactate resulted in aluminum accumulation in bone, brain, spleen, liver, heart, gastrointestinal tract, and spleen. Significant decreases occurred in body weight, water consumption, urine volume, plasma glutamic-pyruvic transaminase, serum triglycerides, serum iron concentration, and alkaline phosphatase, ATP, ADP, and AMP, as well as in motor activity. Additional health effects include changes in the cytological and enzymatic content of the lavage fluid, inhibition of colony-forming units-erythroid (CFU-E), and neurobehavioral effects. Reproductive toxicity and teratogenicity from aluminum compounds has been reported in a number of papers. Reproductive effects observed in male mice, rats, or dogs given aluminum compounds orally or s.c. included repressed sexual behavior, decreased spermatogenesis, or other effects on the testes, sperm duct, and/or epididymis. Reproductive effects from oral administration to female rats included irregularity of the estrus cycle of female offspring or effects on the ovaries or fallopian tubes in treated adults. Maternal toxicity was observed in several studies in which pregnant mice, rats, or rabbits were administered aluminum compounds orally, i.p., or s.c. during gestation. Developmental toxicity from oral, i.p., or s.c. aluminum compound administration was also noted in some rat and mouse studies. Teratogenic effects induced by oral, i.p., or s.c. administration of aluminum compounds included skeletal or musculoskeletal variations, cleft palate or other craniofacial malformations, cardiovascular system abnormalities, and other unspecified physical effects. Injection of aluminum compounds into the yolk sac of fertilized chicken eggs induced similar developmental malformations. Neurotoxic effects were observed when aluminum compounds were given orally to mice, rats, or rabbits. A number of studies were also found that reported no reproductive, maternal, developmental toxicity or teratogenicity from oral, inhalation, i.p., or s.c. administration of aluminum compounds. Genotoxicity In one acellular assay, aluminum was found to bind to DNA through chelation. It was also found to reduce 3H-thymidine incorporation in a transformed cell line, indicating that aluminum compounds may impede cell cycle progression. Aluminum compounds were not mutagenic in the preponderance of Salmonella typhimurium and Escherichia coli studies. Only one study reported a positive mutagenic response, in which aluminum acetylacetonate was tested on S. typhimurium strain TA104 in the absence of metabolic activation. Effects induced in vitro by aluminum compounds included crosslinking of chromosomal proteins in rat ascites hepatoma cells, anaphasic changes in BALB/c mouse 3T3 cells, and formation of DNA-protein crosslinks, micronuclei, sister chromatic exchanges (SCEs), and chromosomal aberrations in cultured human lymphocytes. Effects induced in vivo included SCEs in mice and sheep, delayed mitosis in mice and sheep, and formation of micronucleated polychromatic lymphocytes in mice, and chromosomal aberrations in rats and mice. Neurotoxicity Dementia in dialysis patients and encephalopathy in infants undergoing parenteral nutrition are well known examples of aluminum intoxication in humans. Numerous in vitro studies and epidemiological studies have examined the possible role of aluminum in Alzheimer’s disease, other dementias, and cognitive dysfunction. Numerous animal studies, particularly orally studies in mice and rats, show that aluminum compounds are neurotoxic, but species variation exist. The toxicity is characterized by progressive neurological impairment leading to death associated with repeated seizures. Morphologically, the progressive encephalopathy, associated with neurofibrillary pathology in neurons mostly in the spinal cord, brain stem, and the hippocampus and cingulated gyrus of the cortex, has been induced by aluminum in susceptible animals such as the rabbit, cat, guinea pig, and ferret when given as intrathecal, intracerebral, and subcutaneous injections. For example, in cats and rabbits intracerebral injections of soluble aluminum compounds resulted in impairment in learning and memory, and in rabbits repeated subcutaneous injections affected classical conditioning, while single or repeated intracisternal injection of metallic aluminum altered motor function. Oral administration of aluminum compounds, however, produced no encephalopathy or epilepsy but resulted in behavioral impairment. http://ntp.niehs.nih.gov/ntp/htdocs/chem_background/exsumpdf/aluminum_508.pdf#search=aluminum%20compounds Neurotoxicology • February 2001 Differential toxicity of aluminum salts in human cell lines of neural origin: implications for neurodegeneration Author information Campbell A1, Hamai D, Bondy SC. Department of Community and Environmental Medicine Center for Occupational and Environmental Health University of California, Irvine 92697-1820, USA Abstract Aluminum is highly oxophilic and its minerals are usually found surrounded by six oxygen atoms. A role for the metal has been established in dialysis encephalopathy and Al-induced osteomalacia. The metal has been implicated in Alzheimer’s disease but the issue is at present controversial. Human cell lines of neural origin were utilized to study the effect of lipophilic aluminum acetylacetonate and non-lipophilic aluminum sulfate on cell proliferation and viability. Although analysis of Al species in the cell culture media demonstrated that there are positively charged Al species present in solutions prepared with both Al salts, only the aluminum acetylacetonate salt caused changes in cell proliferation and viability. Therefore, the lipophilic nature of the organic Al salt is a critical determinant of toxicity. The effect of aluminum acetylacetonate was dose-dependent and time-dependent. Neuroblastoma (SK-N-SH) cells were more susceptible to decreased cell proliferation although the lipophilic Al salt was more toxic to the glioblastoma (T98G) cells. While the toxicity of aluminum acetylacetonate was inhibited in the T98G cells by the addition of phosphate, the same treatment did not reverse cell death in the SK-N-SH cells. Thus, the mechanism of Al toxicity appears to be different in the two cell lines. It is possible that the principal neurotoxic target of the metal is glial and when these cells are in a compromised state, this may secondarily impact the neuronal population and thus eventually lead to neurodegeneration. http://www.ncbi.nlm.nih.gov/pubmed/11307852 “It is possible that the principal neurotoxic target of the metal is glial and when these cells are in a compromised state, this may secondarily impact the neuronal population and thus eventually lead to neurodegeneration.” “Aluminum is a nonessential metal to which humans are frequently exposed.” Regulatory Toxicology And Pharmacology • February 2001 Safety evaluation of dietary aluminum Author information Soni MG1, White SM, Flamm WG, Burdock GA. Burdock and Associates, Inc. 622 Beachland Boulevard Suite B, Vero Beach, Florida 32963, USA Abstract Aluminum is a nonessential metal to which humans are frequently exposed. Aluminum in the food supply comes from natural sources, water used in food preparation, food ingredients, and utensils used during food preparations. The amount of aluminum in the diet is small, compared with the amount of aluminum in antacids and some buffered analgesics. The healthy human body has effective barriers (skin, lungs, gastrointestinal tract) to reduce the systemic absorption of aluminum ingested from water, foods, drugs, and air. The small amount of aluminum (<1%) that is systemically absorbed is excreted principally in the urine and, to a lesser extent, in the feces. No reports of dietary aluminum toxicity to healthy individuals exist in the literature. Aluminum can be neurotoxic, when injected directly into the brains of animals and when accidentally introduced into human brains (by dialysis or shrapnel). A study from Canada reports cognitive and other neurological deficits among groups of workers occupationally exposed to dust containing high levels of aluminum. While the precise pathogenic role of aluminum in Alzheimer’s disease (AD) remains to be defined, present data do not support a causative role for aluminum in AD. High intake of aluminum from antacid for gastrointestinal ailments has not been reported to cause any adverse effects and has not been correlated with neurotoxicity or AD. Foods and food ingredients are generally the major dietary sources of aluminum in the United States. Cooking in aluminum utensils often results in statistically significant, but relatively small, increases in aluminum content of food. Common aluminum-containing food ingredients are used mainly as preservatives, coloring agents, leavening agents, anticaking agents, etc. Safety evaluation and approval of these ingredients by the Food and Drug Administration indicate that these aluminumcontaining compounds are safe for use in foods. http://www.ncbi.nlm.nih.gov/pubmed/11259180 Pharmacology And Toxicology • April 2001 Aluminium toxicokinetics: an updated minireview Author information Yokel RA1, McNamara PJ. College of Pharmacy and Graduate Center for Toxicology University of Kentucky Medical Center Lexington 40536-0082, USA ryokell@pop.uky.edu Abstract This MiniReview updates and expands the MiniReview of aluminium toxicokinetics by Wilhelm et al. published by this journal in 1990. The use of 26Al, analyzed by accelerator mass spectrometry, now enables determination of Al toxicokinetics under physiological conditions. There is concern about aluminium in drinking water. The common sources of aluminium for man are reviewed. Oral Al bioavailability from water appears to be about 0.3%. Food is the primary common source. Al bioavailability from food has not been adequately determined. Industrial and medicinal exposure, and perhaps antiperspirant use, can significantly increase absorbed aluminium. Inhalation bioavailability of airborne soluble Al appears to be about 1.5% in the industrial environment. Al may distribute to the brain from the nasal cavity, but the significance of this exposure route is unknown. Systemic Al bioavailability after single underarm antiperspirant application may be up to 0.012%. All intramuscularly injected Al, e.g. from vaccines, may eventually be absorbed. Al distributes unequally to all tissues. Distribution and renal excretion appear to be enhanced by citrate. Brain uptake of Al may be mediated by Al transferrin and Al citrate complexes. There appears to be carrier-mediated efflux of Al citrate from the brain. Elimination half-lives of years have been reported in man, probably reflecting release from bone. Al elimination is primarily renal with < or = 2% excreted in bile. The contribution of food to absorbed Al needs to be determined to advance our understanding of the major components of Al toxicokinetics. http://www.ncbi.nlm.nih.gov/pubmed/11322172 “All intramuscularly injected Aluminum, e.g. from vaccines, may eventually be absorbed.” Brain Research Bulletin • May 2001 Aluminium toxicity in the rat brain: histochemical and immunocytochemical evidence Author information Platt B1, Fiddler G, Riedel G, Henderson Z. Biomedical Sciences, Aberdeen University Scotland, Aberdeen, UK. b.platt@abdn.ac.uk Abstract Although the neurotoxic actions of aluminium (Al) have been well documented, its contribution to neurodegenerative diseases such as Alzheimer’s disease remains controversial. In the present study, we applied histochemical techniques to identify changes induced by intracerebroventricular Al injections (5.4 microg in 5.5 microl, daily over a period of 5 successive days) in the adult rat brain after survival periods of either 1 or 6 weeks. For both Al- and saline-infused controls, no major signs of gross histological changes were evident in cresyl violet-stained sections. Al (as indicated by the fluorescent Morin staining) was concentrated in white matter of the medial striatum, corpus callosum, and cingulate bundle. Immunoreactivity of astrocytes and phagocytic microglia based on glial fibrillary acidic protein and ED1 markers, respectively, revealed a greater inflammatory response in Al-injected animals compared to controls. Damage of the cingulate bundle in Al-treated animals led to a severe anterograde degeneration of cholinergic terminals in cortex and hippocampus, as indicated by acetylcholinesterase labelling. Our data suggest that the enhancement of inflammation and the interference with cholinergic projections may be the modes of action through which Al may cause learning and memory deficits, and contribute to pathological processes in Alzheimer’s disease. http://www.ncbi.nlm.nih.gov/pubmed/?term=11470325 “Our data suggest that the enhancement of inflammation and the interference with cholinergic projections may be the modes of action through which Aluminum may cause learning and memory deficits, and contribute to pathological processes in Alzheimer’s disease.” “... these results firmly establish that aluminium hydroxide-containing vaccines represent the direct cause of the Macrophagic myofasciitis (MMF) lesion.” Brain • September 2001 Macrophagic myofasciitis lesions assess long-term persistence of vaccine-derived aluminium hydroxide in muscle Author information Gherardi RK1, Coquet M, Cherin P, Belec L, Moretto P, Dreyfus PA, Pellissier JF, Chariot P, Authier FJ. Equipe mixte INSERM E 0011/Université Paris XII, France romain.gherardi@hmn.ap-hop-paris.fr Abstract Macrophagic myofasciitis (MMF) is an emerging condition of unknown cause, detected in patients with diffuse arthromyalgias and fatigue, and characterized by muscle infiltration by granular periodic acid-Schiff’s reagent-positive macrophages and lymphocytes. Intracytoplasmic inclusions have been observed in macrophages of some patients. To assess their significance, electron microscopy was performed in 40 consecutive cases and chemical analysis was done by microanalysis and atomic absorption spectrometry. Inclusions were constantly detected and corresponded to aluminium hydroxide, an immunostimulatory compound frequently used as a vaccine adjuvant. A lymphocytic component was constantly observed in MMF lesions. Serological tests were compatible with exposure to aluminium hydroxide-containing vaccines. History analysis revealed that 50 out of 50 patients had received vaccines against hepatitis B virus (86%), hepatitis A virus (19%) or tetanus toxoid (58%), 3-96 months (median 36 months) before biopsy. Diffuse myalgias were more frequent in patients with than without an MMF lesion at deltoid muscle biopsy (P < 0.0001). Myalgia onset was subsequent to the vaccination (median 11 months) in 94% of patients. MMF lesion was experimentally reproduced in rats. We conclude that the MMF lesion is secondary to intramuscular injection of aluminium hydroxide-containing vaccines, shows both long-term persistence of aluminium hydroxide and an ongoing local immune reaction, and is detected in patients with systemic symptoms which appeared subsequently to vaccination. Full Report http://brain.oxfordjournals.org/content/124/9/1821 Pediatric And Developmental Pathology • March 2002 Aluminum phagocytosis in quadriceps muscle following vaccination in children: relationship to macrophagic myofasciitis Author information Lacson AG1, D’Cruz CA, Gilbert-Barness E, Sharer L, Jacinto S, Cuenca R. Departments of Pediatrics and Pathology University of South Florida at All Children’s Hospital 801 Sixth Street South 7020, St. Petersburg, FL 33731, USA Abstract Macrophagic myofasciitis (MMF) is a rare, seemingly emerging entity among adult patients in France. We encountered two children with the first two cases of MMF in North America. A 5-year-old male with chronic intestinal pseudo-obstruction required nighttime parenteral nutrition. Abnormal pupillary reflexes and urinary retention suggested a diffuse dysautonomia, which prompted a neurological diagnostic work-up. A 3-year-old child had developmental delay and hypotonia. Both children received age-appropriate immunizations. Quadriceps muscle biopsy from each child showed the typical patchy, cohesive centripetal infiltration of alpha-1-antitrypsin+, alpha-1antichymotrypsin+, CD68+, PAS+, CD1a-, S-100-, factor XIII- granular macrophages with adjacent myofiber atrophy, dilated blood vessels, and mild endomysial and perimysial fibrosis. No myonecrosis was observed and no discrete granulomas were seen. A single aluminum peak was demonstrated on energy dispersive X-ray microanalysis. The etiology of the clinical symptoms in these cases and in cases reported as MMF remains intriguing. Despite numerous stains to demonstrate organisms, most infectious causes leading to macrophage activation were ruled out. These cases are being reported to increase awareness of this condition and to encourage a systematic epidemiologic and clinicopathologic study in North America. http://www.ncbi.nlm.nih.gov/pubmed/11910509 “Macrophagic myofasciitis (MMF) is a rare, seemingly emerging entity among adult patients in France. We encountered two children with the first two cases of MMF in North America.” Vaccine • May 2002 Mechanisms of stimulation of the immune response by aluminum adjuvants Author information HogenEsch H. Department of Veterinary Pathobiology Purdue University, West Lafayette IN 47907-1243, USA hogenesch@purdue.edu Abstract Aluminum adjuvants are widely used in human and veterinary vaccines. They are appropriate adjuvants for vaccines that confer protection by inducing antibodies via the induction of a type 2 immune response, but they do not induce cytotoxic T cell and cell-mediated immunity. The mechanisms by which aluminum adjuvants selectively enhance the immune response are poorly understood. Following exposure to interstitial fluid in vitro and in vivo, most antigens are rapidly desorbed from aluminum adjuvants, suggesting that sustained release of antigen from a depot does not significantly contribute to the adjuvant effect of aluminum compounds. However, the adsorption of antigens onto aluminum salts may result in a high local concentration of antigen at the injection site and enhance the uptake by antigen-presenting cells. Aluminum compounds can further enhance the immune response by direct or indirect stimulation of dendritic cells, activation of complement and by inducing the release of chemokines. The relative importance of these mechanisms remains to be determined. http://www.ncbi.nlm.nih.gov/pubmed/12184362 “Aluminum compounds can further enhance the immune response by direct or indirect stimulation of dendritic cells, activation of complement and by inducing the release of chemokines. The relative importance of these mechanisms remains to be determined.” “Dr. Gherardi believes that Macrophagic Myofasciitis, a syndrome of ascending myalgias, fatigue and diffuse musculoskeletal pain, may be related to a chronic immune response to aluminum granulomas persisting at the sites of prior immunization with aluminum adjuvated vaccines.” Vaccine • May 2002 Macrophagic myofasciitis: a summary of Dr. Gherardi’s presentations Author information Brenner A1. Rheumatological Services, Inc. Framington, MA 01702, USA alanrsi@aol.com Abstract Dr. R.K. Gherardi presented two papers at the symposium, detailing his researches into a proposed new clinical entity which he has entitled Macrophagic Myofasciitis (MMF). In his first paper he described the histopathologic and immunologic characteristics of the condition, and in the second, the clinical and serologic features. Dr. Gherardi believes that MMF, a syndrome of ascending myalgias, fatigue and diffuse musculoskeletal pain, may be related to a chronic immune response to aluminum granulomas persisting at the sites of prior immunization with aluminum adjuvated vaccines. http://www.ncbi.nlm.nih.gov/pubmed/?term=12184366 “there is no known physiological role for aluminum within the body ...” Environmental Research • June 2002 Aluminum: impacts and disease Author information Nayak P. Department of Physiology Sikkim Manipal Institute of Medical Sciences 5th Mile, Tadong, Gangtok, 737102, Sikkim, India Abstract Aluminum is the most widely distributed metal in the environment and is extensively used in modern daily life. Aluminum enters into the body from the environment and from diet and medication. However, there is no known physiological role for aluminum within the body and hence this metal may produce adverse physiological effects. The impact of aluminum on neural tissues is well reported but studies on extraneural tissues are not well summarized. In this review, the impacts of aluminum on humans and its impact on major physiological systems are summarized and discussed. The neuropathologies associated with high brain aluminum levels, including structural, biochemical, and neurobehavioral changes, have been summarized. In addition, the impact of aluminum on the musculoskeletal system, respiratory system, cardiovascular system, hepatobiliary system, endocrine system, urinary system, and reproductive system are discussed. http://www.ncbi.nlm.nih.gov/pubmed/?term=12123643 “The exact mechanism of aluminum toxicity is not known but accumulating evidence suggests that the metal can potentiate oxidative and inflammatory events, eventually leading to tissue damage.” Toxicology And Industrial Health • August 2002 Aluminum as a toxicant Author information Becaria A1, Campbell A, Bondy SC. Department of Community and Environmental Medicine Center for Occupational and Environmental Health Sciences Irvine, CA 92697-1820, USA abecaria@uci.edu Abstract Although aluminum is the most abundant metal in nature, it has no known biological function. However, it is known that there is a causal role for aluminum in dialysis encephalopathy, microcytic anemia, and osteomalacia. Aluminum has also been proposed to play a role in the pathogenesis of Alzheimer’s disease (AD) even though this issue is controversial. The exact mechanism of aluminum toxicity is not known but accumulating evidence suggests that the metal can potentiate oxidative and inflammatory events, eventually leading to tissue damage. This review encompasses the general toxicology of aluminum with emphasis on the potential mechanisms by which it may accelerate the progression of chronic age-related neurodegenerative disorders. http://www.ncbi.nlm.nih.gov/pubmed/?term=15068131 “... even intermittent or low-dose use of aluminium-based phosphate binders adds to the total load of this toxin in the bone; thus, aluminium use is inadvisable, even for a ‘rescue indication’.” Nephrology, Dialysis, Transplantation • 2002 Aluminium and bone disease in chronic renal failure Author information Malluche HH University of Kentucky, Division of Nephrology Bone and Mineral Metabolism Lexington, 40536-1052, USA hhmall@uky.edu Abstract Aluminium is absorbed by the intestines and is rapidly transported into bone, where it disrupts mineralization and bone cell growth and activity. Its toxicities result in or exacerbate painful forms of renal osteodystrophy, most notably adynamic bone disease and osteomalacia, but also other forms of the disease. Because aluminium is sequestered in bone for long periods, its toxic effects are cumulative. As a result, even intermittent or low-dose use of aluminium-based phosphate binders adds to the total load of this toxin in the bone; thus, aluminium use is inadvisable, even for a ‘rescue indication’. Aluminium blood levels are not a reliable marker of aluminium absorption or organ load in dialysis patients: only stainable aluminium at the mineralization front reflects the histopathological changes observed in bone. Therefore, bone biopsies remain the only approach for definitive diagnosis of aluminium-related bone disease. Most importantly, lack of correlation between overall organ concentrations of a toxin, such as aluminium, and pathological changes does not rule out toxicity. Thus, the specific localization of the toxin is more important than overall organ concentration. What has been observed with aluminium during 25 years of research might be reproduced with other metals that are absorbed, transported and accumulated in bone. What we have learned about the toxicity of aluminium should inform our interpretation of data from studies of other metal-based therapeutics for renal patients. This calls for careful evaluation of any newly introduced therapeutic agents for bone disease in patients lacking excretory kidney function. http://www.ncbi.nlm.nih.gov/pubmed/?term=11904354 Vaccine • 2002 Workshop Summary Aluminum In Vaccines Conference report Theodore C. Eickhoff Division of Infectious Disease University of Colorado Health Sciences 4200 East 9th Avenue Denver, CO 80262, USA Martin Myers National Vaccine Program Office 1600 Cligton Road MS 0-66, Atlanta, GA 30333 Abstract On May 11–12 in San Juan, Puerto Rico the National Vaccine Program Office (NVPO) sponsored a workshop on aluminum in vaccines. The meeting was attended by a diverse group of vaccinologists, immunologists, experts on metals, pathologists, rheumatologists, and other interested parties. The objectives of this meeting were to: (1) establish a better understanding of the role and need of aluminum as an adjuvant in vaccines; (2) explore the possibility of adverse events due to the use of aluminum in vaccines; and (3) develop a research agenda to expand existing knowledge of the impact of aluminum on the human body. From the Metal Ions in Biology and Medicine International Symposium held immediately prior to the aluminum workshop, we learned about “pervasive uncertainty”, a phrase used in this workshop to denote missing data on pharmocokinetics and toxicities of aluminum injected into humans. Even with identification of areas needing further study, it was apparent that aluminum which has been used as a vaccine adjuvant for more than 70 years, has an established safety record with low incidence of reported adverse events. The first session of the workshop was devoted to important background about immunologic adjuvants in general and aluminum adjuvants in particular. Dr. Robert Hunter, University of Texas, provided a broad overview of the history and development of adjuvants, and the conventional views of their mechanism of action and uses. Aluminum adjuvants have been thought to form a repository of antigen in tissue, to produce particulate antigen for presentation to immune cells, and perhaps to activate complement and other immune enhancers. The immune response to some, but not all, protein antigens is enhanced by aluminum salts, however, these salts have little effect on peptide and polysaccharide antigens. Aluminum adjuvants enhance the primary immunization series, reducing the amount of antigen needed per dose and the number of required doses. They increase the proportion of responders, however, there appears to be little effect of adjuvant in subsequent booster doses. Dr. Norman Baylor, US Food and Drug Administra- tion, provided a detailed analysis of aluminum adjuvants, as well as regulatory perspectives. The three general types of aluminum-containing adjuvants are: (1) aluminum hydroxide, (2) aluminum phosphate, and (3) alum, or potassium aluminum sulfate. Each of these types of formulations has different isoelectric points, and properties; they are not simply interchangeable. The efficacy of each salt as an adjuvant depends also on the characteristics of the antigens in the vaccine. FDA regulations limit the aluminum content of an individual dose of a vaccine to 0.85 mg. of elemental aluminum. This is equivalent to 15 mg. of alum per dose. The immunologic advantage conferred by these adjuvants has been well documented, although most of this documentation is found in studies published before 1970. In general, these studies showed that aluminum-adjuvanted vaccines resulted in higher and more prolonged antibody responses than did comparable aqueous vaccines. This advantage was most apparent during primary immunization; there seemed to be little advantage to incorporating adjuvant in booster doses. The US licensed products that contain aluminum adjuvants include DTP, DTaP, some but not all HIB vaccines, hepatitis B vaccine, and all combination DTaP, HIB, or HB vaccines. Others containing aluminum include hepatitis A vaccine, lyme disease vaccine, anthrax vaccine, and rabies vaccine. Inactivated vaccines that do not contain aluminum salts include IPV and influenza vaccines. Of interest was the fact that there are substantial differences among manufacturers both in the specific aluminum adjuvant used, as well as the amount of that adjuvant, in vaccines such as DTaP and in combination vaccines made by several manufacturers. Dr. Baylor also pointed out that any alteration of a vaccine, such as removal of aluminum in booster doses, would necessitate treating the altered vaccine as a new product requiring the collection of additional clinical data. Adverse reactions that have been reported with aluminum-containing vaccines are generally local reactions including sterile abscesses, erythema, subcutaneous (SC) nodules, granulomatous inflammation, and contact hypersensitivity. None of these reactions, however, has been sufficiently frequent to arouse concern. http://archive.hhs.gov/nvpo/nvac/documents/Aluminumws.pdf Journal Of Inorganic Biochemistry • September 2003 A biogeochemical cycle for aluminium? Author information Exley C1. Birchall Centre for Inorganic Chemistry and Materials Science Keele University, Staffordshire ST5 5BG, UK c.exley@chem.keele.ac.uk Abstract The elaboration of biogeochemical cycles for elements which are known to be essential for life has enabled a broad appreciation of the homeostatic mechanisms which underlie element essentiality. In particular they can be used effectively to identify any part played by human activities in element cycling and to predict how such activities might impact upon the lithospheric and biospheric availability of an element in the future. The same criteria were the driving force behind the construction of a biogeochemical cycle for aluminium, a non-essential element which is a known ecotoxicant and a suspected health risk in humans. The purpose of this exercise was to examine the concept of a biogeochemical cycle for aluminium and not to review the biogeochemistry of this element. The cycle as presented is rudimentary and qualitative though, even in this nascent form, it is informative and predictive and, for these reasons alone, it is deserving of future quantification. A fully fledged biogeochemical cycle for aluminium should explain the biospheric abundance of this element and whether we should expect its (continued) active involvement in biochemical evolution. http://www.ncbi.nlm.nih.gov/pubmed/14507454 “a non-essential element which is a known ecotoxicant and a suspected health risk in humans.” Vaccine • December 2003 Unexpectedly high incidence of persistent itching nodules and delayed hypersensitivity to aluminium in children after the use of adsorbed vaccines from a single manufacturer Author information Bergfors E1, Trollfors B, Inerot A. Department of Primary Health Care, Göteborg University Box 454, S-40530 Göteborg, Sweden elisabet.bergfors@allmed.gu.se Abstract During trials of aluminium adsorbed diphtheria-tetanus/acellular pertussis vaccines from a single producer, persistent itching nodules at the vaccination site were observed in an unexpectedly high frequency. The afflicted children were followed in a longitudinal observational study, and the presence of aluminium sensitization was investigated in the children with itching nodules and their symptomless siblings by patch tests. Itching nodules were found in 645 children out of about 76,000 vaccinees (0.8%) after both subcutaneous (s.c.) and intramuscular (i.m.) injection. The itching was intense and long-lasting. So far, 75% still have symptoms after a median duration of 4 years. Contact hypersensitivity to aluminium was demonstrated in 77% of the children with itching nodules and in 8% of the symptomless siblings who had received the same vaccines (P<0.001). Children with persistent itching nodules and/or aluminium sensitization should be warned about aluminium containing products (e.g. vaccines and antiperspirants). The reason for the high incidence of itching nodules after SSI vaccines is unknown and should be further investigated. http://www.ncbi.nlm.nih.gov/pubmed/?term=14604572 “Itching nodules were found in 645 children out of about 76,000 vaccinees after both subcutaneous and intramuscular injection. The itching was intense and long-lasting. So far, 75% still have symptoms after a median duration of 4 years.” Journal Of Neuroscience Research • February 2004 Chronic exposure to aluminum in drinking water increases inflammatory parameters selectively in the brain Author information Campbell A1, Becaria A, Lahiri DK, Sharman K, Bondy SC. Department of Community and Environmental Medicine Center for Occupational and Environmental Health Sciences Irvine, California 92697, USA Abstract A link between aluminum (Al) exposure and age-related neurological disorders has long been proposed. Although the exact mechanism by which the metal may influence disease processes is unknown, there is evidence that exposure to Al causes an increase in both oxidative stress and inflammatory events. These processes have also been suggested to play a role in Alzheimer’s disease (AD), and exposure to the metal may contribute to the disorder by potentiating these events. Al lactate (0.01, 0.1, and 1 mM) in drinking water for 10 weeks increased inflammatory processes in the brains of mice. The lowest of these levels is in the range found to increase the prevalence of AD in regions where the concentrations of the metal are elevated in residential drinking water (Flaten [2001] Brain Res. Bull. 55:187-196). Nuclear factor-kappaB as well as tumor necrosis factor-alpha (TNF-alpha) and interleukin 1alpha (IL-1alpha) levels were increased in the brains of treated animals. The mRNA for TNF-alpha was also up-regulated following treatment. Enhancement of glial fibrillary acidic protein levels and reactive microglia was seen in the striatum of Al-treated animals. The level of amyloid beta (Abeta40) was not significantly altered in the brains of exposed animals. Insofar as no parallel changes were observed in the serum or liver of treated animals, the proinflammatory effects of the metal may be selective to the brain. Al exposure may not be sufficient to cause abnormal production of the principal component of senile plaques directly but does exacerbate underlying events associated with brain aging and thus could contribute to progression of neurodegeneration. http://www.ncbi.nlm.nih.gov/pubmed/14743440 “Although the exact mechanism by which the metal may influence disease processes is unknown, there is evidence that exposure to Al causes an increase in both oxidative stress and inflammatory events. Insofar as no parallel changes were observed in the serum or liver of treated animals, the proinflammatory effects of the metal may be selective to the brain.” “... the more detailed mode of action of these adjuvants is still not completely understood.” Vaccine • September 2004 Aluminium adjuvants—in retrospect and prospect Author information Lindblad EB. Adjuvant Dept. Brenntag Biosector DK-3600 Frederikssund, Denmark Abstract Aluminium compounds have been used as adjuvants in practical vaccination for more than 60 years to induce an early, an efficient and a long lasting protective immunity and are at present the most widely used adjuvants in both veterinary and human vaccines. Although the last two decades of systematic research into the nature of these adjuvants has contributed significantly to understanding their nature and their limitations as Th2 stimulators the more detailed mode of action of these adjuvants is still not completely understood. We have a comprehensive record of their behaviour and performance in practical vaccination, but an empirical approach to optimising their use in new vaccine formulations is still to some extent a necessity. The aim of the present review is to put the recent findings into a broader perspective to facilitate the application of these adjuvants in general and experimental vaccinology. http://www.ncbi.nlm.nih.gov/pubmed/15315845 Archives Of Toxicology • October 2004 Mitochondrial viability and apoptosis induced by aluminum, mercuric mercury and methylmercury in cell lines of neural origin Author information Toimela T1, Tähti H. Medical School, Cell Research Center University of Tampere 33014 University of Tampere, Finland Tarja.Toimela@uta.fi Abstract Mercury and aluminum are considered to be neurotoxic metals, and they are often connected with the onset of neurodegenerative diseases. In this study, mercuric mercury, methylmercury and aluminum were studied in three different cell lines of neural origin. To evaluate the effects, mitochondrial cytotoxicity and apoptosis induced by the metals were measured after various incubation times. SH-SY5Y neuroblastoma, U 373MG glioblastoma, and RPE D407 retinal pigment epithelial cells were subcultured to appropriate cell culture plates and 0.01-1,000 microM concentrations of methylmercury, mercuric and aluminum chloride were added into the growth medium. In the assay measuring the mitochondrial dehydrogenase activity, WST-1, the cultures were exposed for 15 min, 24 or 48 h before measurement. Cells were allowed to recover from the exposure in part of the study. Apoptosis induced by the metals was measured after 6-, 24- and 48-h exposure times with the determination of activated caspase 3 enzyme. Mitochondrial assays showed a clear dose-response and exposure time-response to the metals. The most toxic was methylmercury (EC50 ~0.8 microM, 48 h), and the most sensitive cell line was the neuroblastoma cell line SH-SY5Y. Furthermore, there was marked mitochondrial activation, especially in connection with aluminum and methylmercury at low concentrations. This activation may be important during the initiation of cellular processes. All the metals tested induced apoptosis, but with a different time-course and cell-line specificity. In microscopic photographs, glioblastoma cells formed fibrillary tangles, and neuroblastoma cells settled along the fibrilles in cocultures of glial and neuronal cell lines during aluminum exposure. The study emphasized the toxicity of methylmercury to neural cells and showed that aluminum alters various cellular activities. http://www.ncbi.nlm.nih.gov/pubmed/?term=15150681 “Mercury and aluminum are considered to be neurotoxic metals, and they are often connected with the onset of neurodegenerative diseases. The study emphasized the toxicity of methylmercury to neural cells and showed that aluminum alters various cellular activities.” Journal Of Inorganic Biochemistry • September 2005 Nanomolar aluminum induces pro-inflammatory and pro-apoptotic gene expression in human brain cells in primary culture Author information Lukiw WJ1, Percy ME, Kruck TP. Neuroscience Center of Excellence and Department of Ophthalmology Louisiana State University Health Sciences Center 2020 Gravier Street, Suite 8B8, New Orleans, LA 70112-2272, USA wlukiw@lsuhsc.edu Abstract Aluminum, the most abundant neurotoxic metal in our biosphere, has been implicated in the etiology of several neurodegenerative disorders including Alzheimer’s disease (AD). To further understand aluminum’s influence on gene expression, we examined total messenger RNA levels in untransformed human neural cells exposed to 100 nanomolar aluminum sulfate using high density DNA microarrays that interrogate the expression of every human gene. Preliminary data indicate that of the most altered gene expression levels, 17/24 (70.8%) of aluminum-affected genes, and 7/8 (87.5%) of aluminum-induced genes exhibit expression patterns similar to those observed in AD. The seven genes found to be significantly up-regulated by aluminum encode pro-inflammatory or pro-apoptotic signaling elements, including NF-kappaB subunits, interleukin-1beta precursor, cytosolic phospholipase A2, cyclooxygenase-2, beta-amyloid precursor protein and DAXX, a regulatory protein known to induce apoptosis and repress transcription. The promoters of genes upregulated by aluminum are enriched in binding sites for the stress-inducible transcription factors HIF-1 and NF-kappaB, suggesting a role for aluminum, HIF-1 and NF-kappaB in driving atypical, pro-inflammatory and pro-apoptotic gene expression. The effect of aluminum on specific stress-related gene expression patterns in human brain cells clearly warrant further investigation. http://www.ncbi.nlm.nih.gov/pubmed/15961160 “The effect of aluminum on specific stress-related gene expression patterns in human brain cells clearly warrant further investigation.” Journal Of Alzheimers Disease • November 2005 Synergistic effects of iron and aluminum on stress-related gene expression in primary human neural cells Author information Alexandrov PN1, Zhao Y, Pogue AI, Tarr MA, Kruck TP, Percy ME, Cui JG, Lukiw WJ. Russian Academy of Medical Sciences Moscow 113152, Russia Abstract Disturbances in metal-ion transport, homeostasis, overload and metal ion-mediated catalysis are implicated in neurodegenerative conditions such as Alzheimer’s disease (AD). The mechanisms of metal-ion induced disruption of genetic function, termed genotoxicity, are not well understood. In these experiments we examined the effects of non-apoptotic concentrations of magnesium-, ironand aluminum-sulfate on gene expression patterns in untransformed human neural (HN) cells in primary culture using high density DNA array profiling and Western immunoassay. Two week old HN cells were exposed to low micromolar magnesium, iron, or aluminum for 7 days, representing trace metal exposure over one-third of their lifespan. While total RNA yield and abundance were not significantly altered, both iron and aluminum were found to induce HSP27, COX-2, betaAPP and DAXX gene expression. Similarly up-regulated gene expression for these stress-sensing, pro-inflammatory and pro-apoptotic elements have been observed in AD brain. The combination of iron and aluminum together was found to be particularly effective in up-regulating these genes, and was preceded by the evolution of reactive oxygen intermediates as measured by 2’,7’-dichlorofluorescein diacetate assay. These data indicate that physiologically relevant amounts of iron and aluminum are capable of inducing Fenton chemistry-triggered gene expression programs that may support downstream pathogenic responses and brain cell dysfunction. http://www.ncbi.nlm.nih.gov/pubmed/16308480 “These data indicate that physiologically relevant amounts of iron and aluminum are capable of inducing Fenton chemistry-triggered gene expression programs that may support downstream pathogenic responses and brain cell dysfunction.” Food Additives And Contaminants • March 2005 Aluminium content of some foods and food products in the USA, with aluminium food additives Author information Saiyed SM1, Yokel RA. College of Pharmacy University of Kentucky Medical Center Lexington, KY, USA Abstract The primary objective was to determine the aluminium (Al) content of selected foods and food products in the USA which contain Al as an approved food additive. Intake of Al from the labeled serving size of each food product was calculated. The samples were acid or base digested and analysed for Al using electrothermal atomic absorption spectrometry. Quality control (QC) samples, with matrices matching the samples, were generated and used to verify the Al determinations. Food product Al content ranged from <1-27,000 mg kg(-1). Cheese in a serving of frozen pizzas had up to 14 mg of Al, from basic sodium aluminium phosphate; whereas the same amount of cheese in a ready-to-eat restaurant pizza provided 0.03-0.09 mg. Many single serving packets of non-dairy creamer had approximately 50-600 mg Al kg(-1) as sodium aluminosilicate, providing up to 1.5 mg Al per serving. Many single serving packets of salt also had sodium aluminosilicate as an additive, but the Al content was less than in single-serving non-dairy creamer packets. Acidic sodium aluminium phosphate was present in many food products, pancakes and waffles. Baking powder, some pancake/waffle mixes and frozen products, and ready-to-eat pancakes provided the most Al of the foods tested; up to 180 mg/serving. Many products provide a significant amount of Al compared to the typical intake of 3-12 mg/day reported from dietary Al studies conducted in many countries. http://www.ncbi.nlm.nih.gov/pubmed/16019791 “The primary objective was to determine the aluminium (Al) content of selected foods and food products in the USA which contain Al as an approved food additive. Intake of Al from the labeled serving size of each food product was calculated.” “Aluminum has been associated with several neurodegenerative diseases, such as dialysis encephalopathy, amyotrophic lateral sclerosis and Parkinsonism dementia in the Kii peninsula and Guam, and in particular, Alzheimer’s disease.” Journal Of Alzheimers Disease • November 2005 Effects of aluminum on the nervous system and its possible link with neurodegenerative diseases Author information Kawahara M. Department of Analytical Chemistry School of Pharmaceutical Sciences Kyushu University of Health and Welfare Nobeoka-city, Miyazaki, 882-8508, Japan Abstract Aluminum is environmentally abundant, but not an essential element. Aluminum has been associated with several neurodegenerative diseases, such as dialysis encephalopathy, amyotrophic lateral sclerosis and Parkinsonism dementia in the Kii peninsula and Guam, and in particular, Alzheimer’s disease. Although this association remains controversial, there is increasing evidence which suggests the implication of metal homeostasis in the pathogenesis of Alzheimer’s disease. Aluminum, zinc, copper, and iron cause the conformational changes of Alzheimer’s amyloid-beta protein. Al causes the accumulation of tau protein and amyloid-beta protein in experimental animals. Aluminum induces neuronal apoptosis in vivo as well as in vitro. Furthermore, a relationship between aluminum and the iron-homeostasis or calcium-homeostasis has been suggested. Based on these findings, the characteristics of aluminum neurotoxicity are reviewed, and the potential link between aluminum and neurodegenerative diseases is reconsidered. http://www.ncbi.nlm.nih.gov/pubmed/16308486 Immunology Letters • January 2006 (How) do aluminium adjuvants work? Author information Brewer JM. Division of Immunology Infection and Inflammation University of Glasgow, Western Infirmary Glasgow G11 6NT, UK j.m.brewer@clinmed.gla.ac.uk Abstract The aluminium compounds, originally identified as adjuvants over 70 years ago, remain unique in their widespread application to human vaccines. Given this history, it is surprising that the physicochemical interactions between aluminium compounds and antigens are relatively poorly understood. This has clearly been a contributing factor to vaccine failures, for example, through inappropriate selection of aluminium species or buffers. Similarly, the mechanism(s) of action of aluminium adjuvants are relatively unstudied, although it appears that these agents fail to fit within the current principles underlying activation of the immune response. This review aims to examine recent developments in our understanding of the physicochemical and biological aspects of research into aluminium adjuvants. http://www.ncbi.nlm.nih.gov/pubmed/16188325?dopt=Abstract “The aluminium compounds, originally identified as adjuvants over 70 years ago, remain unique in their widespread application to human vaccines. Given this history, it is surprising that the physicochemical interactions between aluminium compounds and antigens are relatively poorly understood.” Neuromuscular Disorders • May 2006 AlOH3-adjuvanted vaccine-induced macrophagic myofasciitis in rats is influenced by the genetic background Author information Authier FJ1, Sauvat S, Christov C, Chariot P, Raisbeck G, Poron MF, Yiou F, Gherardi R. Centre de Référence Pour Maladies Neuromusculaires CHU Henri Mondor, AP-HP, Créteil, France francois-jerome.authier@hmn.aphp.fr Abstract Macrophagic myofasciitis (MMF) is a specific histopathologic lesion involved in the persistence for years of aluminum hydroxide [Al(OH)(3)] at the site of previous intramuscular (i.m.) injection. In order to study mechanisms involved persistence of MMF lesions, we set up an experimental model of MMF-lesion in Sprague-Dawley and Lewis rat, by i.m. injections of 10 microL of an Al(OH)(3)-adjuvanted vaccine. An evaluation carried out over a 12-month period disclosed significant shrinkage of MMF lesions with time. A radioisotopic study did not show significant aluminium uptake by Al(OH)(3)-loaded macrophages. A morphometric approach showed that Lewis rats with Th1-biased immunity had significantly smaller lesions than Sprague-Dawley rats with balanced Th1/Th2 immunity. Concluding, our results indicate that genetic determinatives of cytotoxic T-cell responses could interfere with the clearance process and condition the persistence of vaccine-induced MMF-lesions. http://www.ncbi.nlm.nih.gov/pubmed/?term=16616846 “Macrophagic myofasciitis (MMF) is ... involved in the persistence for years of aluminum hydroxide at the site of previous intramuscular injection. Concluding, our results indicate that genetic determinatives of cytotoxic T-cell responses could interfere with the clearance process and condition the persistence of vaccine-induced MMF-lesions.” Journal Of Alzheimers Disease • November 2006 Blood-brain barrier flux of aluminum, manganese, iron and other metals suspected to contribute to metal-induced neurodegeneration Author information Yokel RA. College of Pharmacy and Graduate Center for Toxicology University of Kentucky Medical Center Lexington, KY 40536-0082, USA ryokel@email.uky.edu Abstract The etiology of many neurodegenerative diseases has been only partly attributed to acquired traits, suggesting environmental factors may also contribute. Metal dyshomeostasis causes or has been implicated in many neurodegenerative diseases. Metal flux across the bloodbrain barrier (the primary route of brain metal uptake) and the choroid plexuses as well as sensory nerve metal uptake from the nasal cavity are reviewed. Transporters that have been described at the blood-brain barrier are listed to illustrate the extensive possibilities for moving substances into and out of the brain. The controversial role of aluminum in Alzheimer’s disease, evidence suggesting brain aluminum uptake by transferrin-receptor mediated endocytosis and of aluminum citrate by system Xc;{-} and an organic anion transporter, and results suggesting transporter-mediated aluminum brain efflux are reviewed. The ability of manganese to produce a parkinsonism-like syndrome, evidence suggesting manganese uptake by transferrin- and non-transferrin-dependent mechanisms which may include storeoperated calcium channels, and the lack of transporter-mediated manganese brain efflux, are discussed. The evidence for transferrin-dependent and independent mechanisms of brain iron uptake is presented. The copper transporters, ATP7A and ATP7B, and their roles in Menkes and Wilson’s diseases, are summarized. Brain zinc uptake is facilitated by L- and D-histidine, but a transporter, if involved, has not been identified. Brain lead uptake may involve a non-energy-dependent process, store-operated calcium channels, and/or an ATP-dependent calcium pump. Methyl mercury can form a complex with L-cysteine that mimics methionine, enabling its transport by the L system. The putative roles of zinc transporters, ZnT and Zip, in regulating brain zinc are discussed. Although brain uptake mechanisms for some metals have been identified, metal efflux from the brain has received little attention, preventing integration of all processes that contribute to brain metal concentrations. http://www.ncbi.nlm.nih.gov/pubmed/17119290 “Although brain uptake mechanisms for some metals have been identified, metal efflux from the brain has received little attention, preventing integration of all processes that contribute to brain metal concentrations.” Archives Of Toxicology • January 2007 The effects of low dose aluminum on hemorheological and hematological parameters in rats Author information Turgut S1, Bor-Kucukatay M, Emmungil G, Atsak P, Turgut G. Department of Physiology Medical Faculty, Pamukkale University 20020 Denizli, Turkey sturgut@pamukkale.edu.tr Abstract Aluminum (Al) is a nonessential element and humans are constantly exposed to Al as a result of an increase in industrialization and improving technology practices. Al toxicity can induce several clinical disorders such as neurotoxicity, gastrointestinal toxicity, hepatotoxicity, bone diseases, and anemia. This study aimed at evaluating the possible effects of short term and low dose Al exposure on hemorheological and hematological parameters in rats. Fourteen young, male Wistar albino rats were divided into two groups: 1 mg/200 g body weight of aluminum sulfate (Al(2)(SO(4))(3) was injected intraperitoneally to the first group for two weeks, three times a week. The animals of the control group received only physiological saline solution during this period. At the end of the experimental period, anticoagulated blood samples were collected and hematological parameters were determined using an electronic hematology analyzer. Red blood cell (RBC) deformability and aggregation were measured using an ektacytometer (LORCA) and plasma and whole blood viscosities were determined with a WellsBrookfield cone-plate rotational viscometer. Significant decreases in mean corpuscular volume (MCV), red blood cell (RBC) deformability at low shear stress levels, the aggregation half time (t1/2) and the amplitude (AMP) of aggregation and significant increments in whole blood viscosity (WBV) at native and 40% hematocrit (Hct) of Al-treated rats have been observed. In conclusion, low dose Al(2)(SO(4))(3) exposure for a short-time may be responsible for alterations in either rheological properties of blood or hemorheological properties through a remarkable effect on RBC membrane mechanical properties. These alterations may also play an important role in the development of anemia in the Al-treated animals. http://www.ncbi.nlm.nih.gov/pubmed/16721596 “In conclusion, low dose Aluminum exposure for a short-time may be responsible for alterations in either rheological properties of blood or hemorheological properties through a remarkable effect on RBC membrane mechanical properties. ” “It is hypothesized, in the present review, that Aluminum is a potential factor for induction or maintaining the inflammation in Crohn’s Disease ...” Annals Of The New York Academy Of Science • June 2007 Aluminum is a potential environmental factor for Crohn’s disease induction: extended hypothesis Author information Lerner A. Pediatric Gastroenterology and Nutrition Unit Carmel Medical Center, Pappaport School of Medicine Technion-Israel Institute of Technology, Haifa, Israel lerner_aaron@clalit.org.il Abstract Aluminum (Al) is a common environmental compound with immune-adjuvant activity and granulomatous inflammation inducer. Al exposure in food, additives, air, pharmaceuticals, and water pollution is ubiquitous in Western culture. Crohn’s disease (CD) is a chronic relapsing intestinal inflammation in genetically susceptible individuals and is influenced by yet unidentified environmental factors. It is hypothesized, in the present review, that Al is a potential factor for induction or maintaining the inflammation in CD. Epidemiologically, CD incidence is higher in urban areas, where microparticle pollution is prevalent. Al immune activities share many characteristics with the immune pathology of CD: increased antigen presentation and APCs activation, many luminal bacterial or dietary compounds can be adsorbed to the metal and induce Th1 profile activity, promotion of humoral and cellular immune responses, proinflammatory, apoptotic, oxidative activity, and stress-related molecule expression enhancement, affecting intestinal bacterial composition and virulence, granuloma formation, colitis induction in an animal model of CD, and terminal ileum uptake. The Al-bacterial interaction, the microparticles homing the intestine together with the extensive immune activity, put Al as a potential environmental candidate for CD induction and maintenance. http://www.ncbi.nlm.nih.gov/pubmed/?term=17804561 Human Vaccines • July 2007 Effect of alternative aluminum adjuvants on the absorption and immunogenicity of HPV16 L1 VLPs in mice Author information Caulfield MJ1, Shi L, Wang S, Wang B, Tobery TW, Mach H, Ahl PL, Cannon JL, Cook JC, Heinrichs JH, Sitrin RD. Vaccine & Biologics Research Merck Research Laboratories West Point, Pennsylvania USA michael_caufield@merck.com Abstract Aluminum adjuvants are commonly used in prophylactic vaccines to enhance antigen immunogenicity through induction of high-titer antibody responses. Three major forms of aluminum adjuvants with substantially different physical and chemical properties have been described: aluminum phosphate (AlPO(4)), aluminum hydroxide (AlOH) and amorphous aluminum hydroxyphosphate sulfate (AAHS). Here we describe the effect of these different aluminum adjuvants on the formulation and subsequent immunogenicity in mice of virus-like particles (VLPs) consisting of the L1 protein of Human Papillomavirus (HPV) Type 16. Electron microscopy demonstrated that the physical appearance of the phosphate-containing aluminum adjuvants was markedly different from that of aluminum hydroxide. All three aluminum adjuvants were found to display unique surface charge profiles over a range of pH, while AAHS demonstrated the greatest inherent capacity for adsorption of L1 VLPs. These differences were associated with differences in immunogenicity: anti-HPV L1 VLP responses from mice immunized with AAHS-formulated HPV16 vaccine were substantially greater than those produced by mice immunized with the same antigen formulated with aluminum hydroxide. In addition, HPV L1 VLPs formulated on AAHS also induced a substantial interferon-gamma secreting T cell response to L1 peptides indicating the potential for an enhanced memory response to this antigen. These results indicate that the chemical composition of aluminum adjuvants can have a profound influence on the magnitude and quality of the immune response to HPV VLP vaccines. http://www.ncbi.nlm.nih.gov/pubmed/17581283 “These results indicate that the chemical composition of aluminum adjuvants can have a profound influence on the magnitude and quality of the immune response to HPV VLP vaccines.” Free Radical Biology & Medicine • October 2007 Aluminum: a potential pro-oxidant in sunscreens/sunblocks? Nicholson S, Exley C. Scientists at Keele University in Staffordshire have questioned the safety of aluminium added to sunscreens and sunblocks The researchers, Scott Nicholson, BSc, and Dr Christopher Exley, PhD, Birchall Centre for Inorganic Chemistry and Materials Science at Keele, measured the aluminium content of sunscreens/sunblocks, which either include or do not include an aluminium salt (for example, aluminium hydroxide, aluminium oxide, aluminium silicate, aluminium stearate, aluminium starch octenylsuccinate) as an ingredient. Aluminium was present in all seven products tested and its content was of particular significance in three products, each of which listed it as an ingredient. Following numerous enquiries the manufacturers were not forthcoming as to the role of aluminium in their product, except one manufacturer, who confirmed that aluminium hydroxide was added to their product to coat the surface and thereby prevent the agglomeration of another ingredient, titanium dioxide particles. World Health Organisation guidelines recommend a single application of at least 35mL of a sunscreen/sunblock to achieve the stated sun protection factor. For three of the sunscreens/sunblocks investigated a single application of product would result in 200 mg of aluminium being applied to the skin surface. In addition, WHO guidelines suggest re-application of product every two hours which, for example, for an average day on the beach, would result in up to 1g of aluminium being applied to the skin surface. Skin is permeable to aluminium salts when, for example, they are topically applied as antiperspirant formulations. It will accumulate in the skin and be transported to sites throughout the body. It is highly likely that the everyday use of sunscreens/sunblocks is an hitherto unrecognised contributor of aluminium to the human body burden of this non-essential metal. Perhaps of immediate significance is the potential for aluminium in the skin to act as a pro-oxidant. Recent research in the journal Free Radical Biology and Medicine has shown that UV filters in sunscreens promote the formation of reactive oxygen species (ROS) in the nucleated epidermis of the skin. The authors speculate upon the role which might be played by anti-oxidants, either already in the skin or included in sunscreen formulations, in counteracting the pro-oxidant activities of UV filters though they did not consider how the presence of additional pro-oxidants might exacerbate such effects. Aluminium is one such pro-oxidant and could significantly increase the potential for oxidative damage in the skin. While the relationship between the burgeoning use of sunscreens/sunblocks and the increased incidence of skin cancers and, in particular, melanoma, is highly controversial it has not hitherto been considered that aluminium in these products could be an extremely significant contributing factor. Of course, aluminium is already in the skin surface and may not need to be a component of sunscreens/sunblocks to exacerbate oxidative damage attributed to the application of such products. http://www.ncbi.nlm.nih.gov/pubmed/17854717 Journal Of Inorganic Biochemistry • October 2007 A systems biology approach to the blood-aluminium problem: the application and testing of a computational model Author information Beardmore J1, Rugg G, Exley C. Birchall Centre for Inorganic Chemistry and Materials Science Lennard-Jones Laboratories, Keele University Staffordshire ST5 5BG, UK Abstract Transport and distribution of systemic aluminium are influenced by its interaction with blood. Current understanding is centred upon the role played by the iron transport protein transferrin which has been shown to bind up to 90% of serum total aluminium. We have coined what we have called the blood-aluminium problem which states that the proportion of serum aluminium which, at any one moment in time, is bound by transferrin is more heavily influenced by kinetic constraints than thermodynamic equilibria with the result that the role played by transferrin in the transport and distribution of aluminium is likely to have been over estimated. To begin to solve the blood-aluminium problem and therewith provide a numerical solution to the aforementioned kinetic constraints we have applied and tested a simple computational model of the time-dependency of a putative transferrin ligand (L) binding aluminium to form an Al-L complex with a probability of existence, K(E), between 0% (no complex) and 100% (complex will not dissociate). The model is based upon the principles of a lattice-gas automaton which when ran for K(E) in the range 0.1-98.0% demonstrated the emergence of complex behaviour which could be defined in the terms of a set of parameters (equilibrium value, E(V), equilibrium time, E(T), peak value, P(V), peak time, P(T), area under curve, AUC) the values of which varied in a predictable way with K(E). When K(E) was set to 98% the model predicted that ca. 90% of the total aluminium would be bound by transferrin within ca. 350 simulation timesteps. We have used a systems biology approach to develop a simple model of the time-dependency of the binding of aluminium by transferrin. To use this approach to begin to solve the blood-aluminium problem we shall need to increase the complexity of the model to better reflect the heterogeneity of a biological system such as the blood. http://www.ncbi.nlm.nih.gov/pubmed/17629565 “Aluminum is a metal with known neurotoxic properties which are linked to encephalopathy and neurodegenerative diseases.” Neurotoxicology • November 2007 Occupational aluminum exposure: evidence in support of its neurobehavioral impact Author information Meyer-Baron M1, Schäper M, Knapp G, van Thriel C. Leibniz Research Centre for Working Environment and Human Factors Ardeystr. 67, 44139 Dortmund, Germany meyerbaron@ifado.de Abstract Aluminum is a metal with known neurotoxic properties which are linked to encephalopathy and neurodegenerative diseases. The objectives of the current meta-analysis study were: (1) to summarize neurobehavioral data obtained by epidemiological studies in occupational settings and (2) to analyze confounding within these data. The meta-analysis was based on estimates of effect sizes. Overall effect sizes were obtained by application of a random effects model. The final sample consisted of nine studies examining 449 exposed and 315 control subjects. The mean urinary aluminum concentrations in the exposed groups ranged from 13 to 133 microg/l. Six neuropsychological tests, which yielded 10 performance variables, were analyzed. Nine overall effect sizes indicated an inferior performance for the exposed group. A significant overall effect size (d(RE)=-0.43) was obtained for the digit symbol test measuring speed-related components of cognitive and motor performance. Moreover, the individual effect sizes obtained for this test suggested an exposure-response relationship. Results obtained from either raw or adjusted mean scores revealed that confounding in the data could not be excluded. The results were compared to studies not included here due to a shortage of required data. Similarities were discussed in terms of sensitivity of the tests for detecting aluminum-related changes in brain function. There was concurring evidence from different studies that urinary Al concentrations below 135 microg/l have an impact on cognitive performance. The significant effect for the digit symbol might be related to its multifaceted character which requires functioning in different components of cognitive and motor performance. This feature could possibly turn the test into a screening instrument for neurobehavioral effects. However, additional studies are necessary to verify and to differentiate the effect of aluminum on cognitive performance. From a neuropsychological perspective, implicit and explicit memory, visuo-spatial and central odor processing should be examined. A measure of verbal intelligence should be included in order to address the influence of confounding. Internationally standardized exposure measures would enhance the comparability of studies. http://www.ncbi.nlm.nih.gov/pubmed/?term=17692380 Neuromolecular Medicine • 2007 Aluminum adjuvant linked to Gulf War illness induces motor neuron death in mice Author information Petrik MS1, Wong MC, Tabata RC, Garry RF, Shaw CA. Department of Ophthalmology and Program in Neuroscience University of British Columbia, Vancouver British Columbia, Canada mspetrik@interchange.ubc.ca Abstract Gulf War illness (GWI) affects a significant percentage of veterans of the 1991 conflict, but its origin remains unknown. Associated with some cases of GWI are increased incidences of amyotrophic lateral sclerosis and other neurological disorders. Whereas many environmental factors have been linked to GWI, the role of the anthrax vaccine has come under increasing scrutiny. Among the vaccine’s potentially toxic components are the adjuvants aluminum hydroxide and squalene. To examine whether these compounds might contribute to neuronal deficits associated with GWI, an animal model for examining the potential neurological impact of aluminum hydroxide, squalene, or aluminum hydroxide combined with squalene was developed. Young, male colony CD-1 mice were injected with the adjuvants at doses equivalent to those given to US military service personnel. All mice were subjected to a battery of motor and cognitivebehavioral tests over a 6-mo period postinjections. Following sacrifice, central nervous system tissues were examined using immunohistochemistry for evidence of inflammation and cell death. Behavioral testing showed motor deficits in the aluminum treatment group that expressed as a progressive decrease in strength measured by the wire-mesh hang test (final deficit at 24 wk; about 50%). Significant cognitive deficits in water-maze learning were observed in the combined aluminum and squalene group (4.3 errors per trial) compared with the controls (0.2 errors per trial) after 20 wk. Apoptotic neurons were identified in aluminum-injected animals that showed significantly increased activated caspase-3 labeling in lumbar spinal cord (255%) and primary motor cortex (192%) compared with the controls. Aluminum-treated groups also showed significant motor neuron loss (35%) and increased numbers of astrocytes (350%) in the lumbar spinal cord. The findings suggest a possible role for the aluminum adjuvant in some neurological features associated with GWI and possibly an additional role for the combination of adjuvants. http://www.ncbi.nlm.nih.gov/pubmed/17114826 “Among the vaccine’s potentially toxic components are the adjuvants aluminum hydroxide and squalene. The findings suggest a possible role for the aluminum adjuvant in some neurological features associated with Gulf War Illness and possibly an additional role for the combination of adjuvants.” Journal Of Toxicology And Environmental Health Part B Critical Reviews • 2007 Human Health Risk Assessment For Aluminum, Aluminum Oxide, And Aluminum Hydroxide Author Information Daniel Krewski,1,2 Robert A Yokel,3 Evert Nieboer,4 David Borchelt,5 Joshua Cohen,6 Jean Harry,7 Sam Kacew,2,8 Joan Lindsay,9 Amal M Mahfouz,10 and Virginie Rondeau11 1. Department of Epidemiology and Community Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada 2. McLaughlin Centre for Population Health Risk Assessment, Institute of Population Health, University of Ottawa, Ottawa, Ontario, Canada 3. College of Pharmacy and Graduate Center for Toxicology, University of Kentucky Medical Center, Kentucky, USA 4. Department of Biochemistry and Biomedical Sciences, McMaster University Hamilton, Ontario, Canada and Institute of Community Medicine, University of Tromsø, Norway 5. SantaFe Health Alzheimer’s Disease Research Center, Department of Neuroscience, McKnight Brain Institute, University of Florida, USA 6. Institute for Clinical Research and Health Policy Studies, Tufts-New England Medical Center, USA 7. National Institute of Environmental Health Sciences, NIH, Research Triangle Park, NC, USA 8. Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Ontario, Canada 9. Aging-Related Diseases Section, Surveillance Division, Public Health Agency of Canada, Ottawa, Ontario, Canada 10. United States Environmental Protection Agency, Washington DC, USA 11. INSERM E0338 (Biostatistic), Université Victor Segalen Bordeaux 2, Bordeaux, France Corresponding Author: Daniel Krewski Professor and Director, McLaughlin Centre for Population Health Risk Assessment University of Ottawa, Room 320, One Stewart Street, Ottawa, Ontario Tel: 613-562-5381, Fax: 613-562-5380 Findings “This report classified the weight of evidence for each exposure pathway and health effect as strong, modest, limited, or having no clear evidence (see Table 25). We concluded that there is strong evidence that aluminum can cause irritation following exposure via either inhalation or injection. Modest evidence of an effect exists for reproductive toxicity following oral exposure, for neurological toxicity following either oral or injection exposure, and for bone toxicity following injection exposure.” Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2782734/ “Modest evidence of an effect exists for reproductive toxicity following oral exposure, for neurological toxicity following either oral or injection exposure, and for bone toxicity following injection exposure.” Journal Of Experimental Medicine • April 2008 Alum adjuvant boosts adaptive immunity by inducing uric acid and activating inflammatory dendritic cells Kool M1, Soullié T, van Nimwegen M, Willart MA, Muskens F, Jung S, Hoogsteden HC, Hammad H, Lambrecht BN. Department of Pulmonary Medicine Erasmus University Medical Centre 3015 GD Rotterdam, Netherlands Abstract Alum (aluminum hydroxide) is the most widely used adjuvant in human vaccines, but the mechanism of its adjuvanticity remains unknown. In vitro studies showed no stimulatory effects on dendritic cells (DCs). In the absence of adjuvant, Ag was taken up by lymph node (LN)-resident DCs that acquired soluble Ag via afferent lymphatics, whereas after injection of alum, Ag was taken up, processed, and presented by inflammatory monocytes that migrated from the peritoneum, thus becoming inflammatory DCs that induced a persistent Th2 response. The enhancing effects of alum on both cellular and humoral immunity were completely abolished when CD11c(+) monocytes and DCs were conditionally depleted during immunization. Mechanistically, DC-driven responses were abolished in MyD88-deficient mice and after uricase treatment, implying the induction of uric acid. These findings suggest that alum adjuvant is immunogenic by exploiting “nature’s adjuvant,” the inflammatory DC through induction of the endogenous danger signal uric acid. http://www.ncbi.nlm.nih.gov/pubmed/?term=18362170 “Alum (aluminum hydroxide) is the most widely used adjuvant in human vaccines, but the mechanism of its adjuvanticity remains unknown.” Annales de Pathologie • April 2008 Late-onset vaccination-induced subcutaneous pseudolymphoma Author information Croce S1, Lhermitte B, Tomasetto C, Guillard O, Bellocq JP, Chenard MP. Département de Pathologie CHU de Strasbourg, hôpital de Hautepierre 1 avenue Molière, 67098 Strasbourg cedex, France Abstract Persistent subcutaneous nodules arise on rare occasions at sites of injection of aluminium hydroxide-adsorbed vaccine. We report a case following a diphtheria, tetanus and pertussis vaccination. The late onset of the lesion, four years after the injection, led to an uncertain preoperative diagnosis. Histopathologic examination showed features of a subcutaneous pseudolymphoma. The demonstration of aluminium by Morin staining and atomic absorption spectrometry on a paraffin-embedded tissue probe supported the diagnosis of a vaccination-induced pseudolymphoma. http://www.ncbi.nlm.nih.gov/pubmed/18675172 “The late onset of the lesion, four years after the injection, led to an uncertain preoperative diagnosis.” Experimental Gerontology • April 2008 Effects of aluminium sulphate in the mouse liver: similarities to the aging process Author information Stacchiotti A1, Lavazza A, Ferroni M, Sberveglieri G, Bianchi R, Rezzani R, Rodella LF. Department of Biomedical Sciences and Biotechnologies Brescia University, Brescia, Italy stacchio@med.unibs.it Abstract Aluminium (Al) is a ubiquitous metal that is potentially toxic to the brain. Its effects on other fundamental organs are not completely understood. This morphological in vivo study sought to compare sublethal hepatotoxic changes and Al deposition in adult mice that orally ingested Al sulphate daily for 10 months, in age matched control mice that drank tap water and in senescent mice (24 months old). Livers were examined for collagen deposition using Sirius red and Masson, for iron accumulation using Perls’ stain. Light, electron microscopy and morphometry were used to assess fibrosis and vascular changes. Scanning transmission electron microscopy and EDX microanalysis were used to detect in situ elemental Al. Iron deposition, transferrin receptor expression were significantly altered following Al exposure and in the aged liver but were unaffected in age matched control mice. In Al treated mice as in senescent mice, endothelial thickness was increased and porosity was decreased like perisinusoidal actin. Furthermore, Al stimulated the deposition of collagen and laminin, mainly in acinar zones 1 and 3. Pseudocapillarization and periportal laminin in senescent mice were similar to Al treated adult liver. In conclusion, prolonged Al sulphate intake accelerates features of senescence in the adult mice liver. http://www.ncbi.nlm.nih.gov/pubmed/18337038 “Aluminium (Al) is a ubiquitous metal that is potentially toxic to the brain ... prolonged Al sulphate intake accelerates features of senescence in the adult mice liver.” Actas Dermo-Sifiliograficas • April 2008 B-cell pseudolymphoma caused by aluminium hydroxide following hyposensitization therapy Author information Hernández I1, Sanmartín O, Cardá C, Góme S, Alfaro A. Servicio de Dermatología Hospital General Básico de la Defensa de Valencia España Abstract Aluminium hydroxide is used as an adjuvant in vaccines. We describe the case of a patient who presented a persistent adverse local reaction to aluminium hydroxide due to hyposensitization therapy to dust mites. Multiple painful and pruriginous subcutaneous nodules were observed in both arms, along with hypertrichosis at the injection site. Histology revealed a pseudolymphomatous B cell reaction predominantly involving cells that were CD20 positive, did not express bcl-2, and did not display the t(14-18) translocation. The cells also exhibited polyclonal rearrangement of the immunoglobulin heavy chains. X-ray spectral microanalysis revealed deposits of inorganic aluminium in the granular histiocytes among the germinal centers. The patient was diagnosed with cutaneous B-cell pseudolymphoma due to aluminium hydroxide as a result of immunotherapy. http://www.ncbi.nlm.nih.gov/pubmed/?term=18358197 “The patient was diagnosed with cutaneous B-cell pseudolymphoma due to aluminium hydroxide ...” Vaccine • May 2008 Alum boosts TH2-type antibody responses to whole-inactivated virus influenza vaccine in mice but does not confer superior protection Author information Bungener L1, Geeraedts F, Ter Veer W, Medema J, Wilschut J, Huckriede A. Department of Medical Microbiology, Molecular Virology Section University Medical Center Groningen and University of Groningen Postbus 30.001, 9700 RB Groningen, The Netherlands Abstract Clinical trials with pandemic influenza vaccine candidates have focused on aluminium hydroxide as an adjuvant to boost humoral immune responses. In this study we investigated the effect of aluminium hydroxide on the magnitude and type of immune response induced by whole-inactivated virus (WIV) vaccine. Balb/c mice were immunized once with a range of antigen doses (0.04-5 microg) of WIV produced from A/PR/8 virus, either alone or in combination with aluminium hydroxide. The hemagglutination inhibition (HI) titers of mice receiving WIV+aluminium hydroxide were 4-16-fold higher than HI titers in mice receiving the same dose of WIV alone, indicating the boosting effect of aluminium hydroxide. WIV induced a TH1 skewed humoral and cellular immune response, characterized by strong influenza-specific IgG2a responses and a high number of IFNgamma-secreting T cells. In contrast, immunization with WIV adsorbed to aluminium hydroxide resulted in skewing of this response to a TH2 phenotype (high IgG1 levels and a low number of IFNgammaproducing T cells). To assess the effect of the observed immune response skewing on viral clearance from the lungs mice immunized once with 1 microg WIV without or with aluminium hydroxide were challenged with A/PR/8 virus 4 weeks later. The immunized mice showed a significant decrease in viral lung titers compared to control mice receiving buffer. However, despite higher antibody titers, mice immunized with WIV adsorbed to aluminium hydroxide suffered from more severe weight loss and had significantly higher virus loads in their lung tissue than mice receiving WIV alone. Major difference between these groups of mice was the type of immune response induced, TH2 instead of TH1, indicating that a TH1 response plays a major role in viral clearance. http://www.ncbi.nlm.nih.gov/pubmed/?term=18400340 “despite higher antibody titers, mice immunized with whole-inactivated virus adsorbed to aluminium hydroxide suffered from more severe weight loss and had significantly higher virus loads in their lung tissue than mice receiving whole-inactivated virus alone.” Food And Chemical Toxicology • June 2008 Aluminum bioavailability from basic sodium aluminum phosphate, an approved food additive emulsifying agent, incorporated in cheese Author information Yokel RA1, Hicks CL, Florence RL. Department of Pharmaceutical Sciences College of Pharmacy University of Kentucky Academic Medical Center 511C Pharmacy Building, 725 Rose Street Lexington, KY 40536-0082, USA ryokel@email.uky.edu Abstract Oral aluminum (Al) bioavailability from drinking water has been previously estimated, but there is little information on Al bioavailability from foods. It was suggested that oral Al bioavailability from drinking water is much greater than from foods. The objective was to further test this hypothesis. Oral Al bioavailability was determined in the rat from basic [26Al]-sodium aluminum phosphate (basic SALP) in a process cheese. Consumption of approximately 1g cheese containing 1.5% or 3% basic SALP resulted in oral Al bioavailability (F) of approximately 0.1% and 0.3%, respectively, and time to maximum serum 26Al concentration (Tmax) of 8-9h. These Al bioavailability results were intermediate to previously reported results from drinking water (F approximately 0.3%) and acidic-SALP incorporated into a biscuit (F approximately 0.1%), using the same methods. Considering the similar oral bioavailability of Al from food vs. water, and their contribution to the typical human’s daily Al intake ( approximately 95% and 1.5%, respectively), these results suggest food contributes much more Al to systemic circulation, and potential Al body burden, than does drinking water. These results do not support the hypothesis that drinking water provides a disproportionate contribution to total Al absorbed from the gastrointestinal tract. http://www.ncbi.nlm.nih.gov/pubmed/18436363 “these results suggest food contributes much more Al to systemic circulation, and potential Al body burden, than does drinking water.” Journal Of Child Neurology • June 2008 Macrophagic myofasciitis in children is a localized reaction to vaccination Author information Lach B1, Cupler EJ. Department of Pathology and Laboratory Medicine King Faisal Specialist Hospital and Research Center Riyadh, Saudi Arabia boleklach2@hotmail.com Abstract Macrophagic myofasciitis is a novel, “inflammatory myopathy” described after a variety of vaccinations, almost exclusively in adults. We examined the relevance of histological findings of this myopathy to the clinical presentation in pediatric patients. Muscle biopsies from 8 children (7 months to 6 years old) with histological features of macrophagic myofasciitis were reviewed and correlated with the clinical manifestations. Patients underwent quadriceps muscle biopsy for suspected mitochondrial disease (4 patients), spinal muscular atrophy (2 patients), myoglobinuria (1 patient), and hypotonia with motor delay (1 patient). All biopsies showed identical granulomas composed of periodic acid-Schiff-positive and CD68-positive macrophages. Characteristic aluminum hydroxide crystals were identified by electron microscopy in 2 cases. The biopsy established diagnoses other than macrophagic myofasciitis in 5 patients: spinal muscular atrophy (2), Duchenne muscular dystrophy (1), phospho-glycerate kinase deficiency (1), and cytochrome c oxidase deficiency (1). Three children with manifestations and/or a family history of mitochondrial disease had otherwise morphologically normal muscle. All children had routine vaccinations between 2 months and 1 year before the biopsy, with up to 11 intramuscular injections, including the biopsy sites. There was no correlation between histological findings of macrophagic myofasciitis in biopsies and the clinical symptoms. We believe that macrophagic myofasciitis represents a localized histological hallmark of previous immunization with the aluminum hydroxide adjuvants contained in vaccines, rather than a primary or distinct inflammatory muscle disease. http://www.ncbi.nlm.nih.gov/pubmed/18281624 “We believe that macrophagic myofasciitis represents a localized histological hallmark of previous immunization with the aluminum hydroxide adjuvants contained in vaccines, rather than a primary or distinct inflammatory muscle disease.” Brain Research • September 2008 Impairment of mitochondrial energy metabolism in different regions of rat brain following chronic exposure to aluminium Author information Kumar V1, Bal A, Gill KD. Department of Biochemistry Postgraduate Institute of Medical Education and Research Chandigarh, 160 012, India Abstract The present study was designed with an aim to evaluate the effects of chronic aluminium exposure (10 mg/kg b.wt, intragastrically for 12 weeks) on mitochondrial energy metabolism in different regions of rat brain in vivo. Mitochondrial preparations from aluminium treated rats revealed significant decrease in the activity of various electron transport complexes viz. cytochrome oxidase, NADH cytochrome c reductase and succinic dehydrogenase as well, in the hippocampus region. The decrease in the activity of these respiratory complexes was also seen in the other two regions viz. corpus striatum and cerebral cortex, but to a lesser extent. This decrease in the activities of electron transport complexes in turn affected the ATP synthesis and ATP levels adversely in the mitochondria isolated from aluminium treated rat brain regions. We also studied the spectral properties of the mitochondrial cytochromes viz. cyt a, cyt b, cyt c1, and cyt c in both control and treated rat brains. The various cytochrome levels were found to be decreased following 12 weeks of aluminium exposure. Further, these impairments in mitochondrial functions may also be responsible for the production of reactive oxygen species and impaired antioxidant defense system as observed in our study. The electron micrographs of neuronal cells depicted morphological changes in mitochondria as well as nucleus only from hippocampus and corpus striatum regions following 12 weeks exposure to aluminium. The present study thus highlights the significance of altered mitochondrial energy metabolism and increased ROS production as a result of chronic aluminium exposure in different regions of the rat brain. http://www.ncbi.nlm.nih.gov/pubmed/?term=18691561 “The present study thus highlights the significance of altered mitochondrial energy metabolism and increased ROS production as a result of chronic aluminium exposure in different regions of the rat brain.” “Select human population can be at risk of Aluminum neurotoxicity, and Aluminum is proposed to be involved in the etiology of neurodegenerative diseases.” Archives Of Toxicology • November 2008 Aluminium and lead: molecular mechanisms of brain toxicity Author information Verstraeten SV1, Aimo L, Oteiza PI. Department of Biological Chemistry, IIMHNO (UBA) and IQUIFIB (UBA-CONICET) School of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires, Argentina Abstract The fact that aluminium (Al) and lead (Pb) are both toxic metals to living organisms, including human beings, was discovered a long time ago. Even when Al and Pb can reach and accumulate in almost every organ in the human body, the central nervous system is a particular target of the deleterious effects of both metals. Select human population can be at risk of Al neurotoxicity, and Al is proposed to be involved in the etiology of neurodegenerative diseases. Pb is a widespread environmental hazard, and the neurotoxic effects of Pb are a major public health concern. In spite of the numerous efforts and the accumulating evidence in this area of research, the mechanisms of Al and Pb neurotoxicity are still not completely elucidated. This review will particularly address the involvement of oxidative stress, membrane biophysics alterations, deregulation of cell signaling, and the impairment of neurotransmission as key aspects involved Al and Pb neurotoxicity. http://www.ncbi.nlm.nih.gov/pubmed/18668223 “Aluminium has been implicated in various neurodegenerative diseases but exact mechanism of action is still not known.” Toxicology • January 2009 Susceptibility of mitochondrial superoxide dismutase to aluminium induced oxidative damage Author information Kumar V1, Bal A, Gill KD. Department of Biochemistry Postgraduate Institute of Medical Education and Research Chandigarh 160012, India Abstract Aluminium has been implicated in various neurodegenerative diseases but exact mechanism of action is still not known. Mitochondria being a major site of reactive oxygen species production are considered to be target of oxidative stress and it seems that the oxidative damage to mitochondrial proteins may underlie the pathogenesis of aluminium induced neurodegeneration. Thus, the present study was undertaken to reveal the effects of chronic aluminium exposure (10mg/kg b.wt, intragastrically for 12 weeks) on the oxidative damage to mitochondrial proteins in male albino Wistar rats. Chronic aluminium exposure resulted in decrease in the activity of mitochondrial superoxide dismutase (MnSOD) and aconitase in different regions of rat brain suggesting increased oxidative stress. This decrease in MnSOD activity in turn might be responsible for the increased protein oxidation as observed in our study. All these processes taken together may cause increased oxidative damage to mitochondrial proteins in general. By taking the advantage of recent immunochemical probe for oxidatively modified proteins, we identified MnSOD to be susceptible to oxidative damage in aluminium treated animals. The quantitative RTPCR analysis for Lon protease, a protease involved in the removal of oxidatively modified proteins from mitochondria, showed decreased mRNA expression suggesting increased oxidative damage and decreased removal of mitochondrial proteins. The identification of specific proteins as targets of oxidative damage may provide new therapeutic measures to reverse the effects of aluminium induced neurodegeneration. http://www.ncbi.nlm.nih.gov/pubmed/19010380 Medical Hypotheses • February 2009 A role for the body burden of aluminium in vaccine-associated macrophagic myofasciitis and chronic fatigue syndrome Author information Exley C1, Swarbrick L, Gherardi RK, Authier FJ. Birchall Centre for Inorganic Chemistry and Materials Science Keele University, Staffordshire ST5 5BG, UK c.exley@chem.keele.ac.uk Abstract Macrophagic myofasciitis and chronic fatigue syndrome are severely disabling conditions which may be caused by adverse reactions to aluminiumcontaining adjuvants in vaccines. While a little is known of disease aetiology both conditions are characterised by an aberrant immune response, have a number of prominent symptoms in common and are coincident in many individuals. Herein, we have described a case of vaccine-associated chronic fatigue syndrome and macrophagic myofasciitis in an individual demonstrating aluminium overload. This is the first report linking the latter with either of these two conditions and the possibility is considered that the coincident aluminium overload contributed significantly to the severity of these conditions in this individual. This case has highlighted potential dangers associated with aluminium-containing adjuvants and we have elucidated a possible mechanism whereby vaccination involving aluminium-containing adjuvants could trigger the cascade of immunological events which are associated with autoimmune conditions including chronic fatigue syndrome and macrophagic myofasciitis. http://www.ncbi.nlm.nih.gov/pubmed/19004564 “This case has highlighted potential dangers associated with aluminium-containing adjuvants and we have elucidated a possible mechanism whereby vaccination involving aluminium-containing adjuvants could trigger the cascade of immunological events which are associated with autoimmune conditions including chronic fatigue syndrome and macrophagic myofasciitis.” Journal Of Inorganic Biochemistry • August 2009 Guest editorial ‘The natural history of aluminium: from non-selection to natural selection’. Author Information Christopher Exley Keele University Birchall Centre for Inorchanic Chemistry and Materials Science Lennard-Jones Laboratories, Keele Staffordshire ST5 5BG, UK Abstract “Al accumulates in the body with age and particularly so when exposure is high and/or protective gastrointestinal mechanisms are bypassed or renal function is impaired (Kisters et al., 1999). Al toxicity in humans, even at low levels of exposure (Exley, 2009b), is a well-established fact and the brain is a target organ for Al to exert its deleterious effects (Exley et al., 1996; Exley, 1999; Yokel et al., 1999). The molecular mechanisms of Al neurotoxicity are not completely understood: Al has been reported to alter the blood-brain barrier (Zatta et al., 2003) and is deposited in the human brain (Exley and House, 2011). “ “Aluminum toxicity in humans, even at low levels of exposure, is a well-established fact and the brain is a target organ for Aluminum to exert its deleterious effects. The molecular mechanisms of Al neurotoxicity are not completely understood: Aluminum has been reported to alter the blood-brain barrier and is deposited in the human brain ...” https://www.researchgate.net/publication/26763878_Guest_editorial_%27The_natural_history_of_aluminium_from_non-selection_to_natural_selection%27 “... our findings indicate that fatty acids common in food increase the paracellular intestinal absorption of Aluminum.” Chemical-Biological Interactions • October 2009 Fatty acids increase paracellular absorption of aluminium across Caco-2 cell monolayers Author information Aspenström-Fagerlund B1, Sundström B, Tallkvist J, Ilbäck NG, Glynn AW. Toxicology Division National Food Administration Uppsala, Sweden bfas@slv.se Abstract Passive paracellular absorption, regulated by tight junctions (TJs), is the main route for absorption of poorly absorbed hydrophilic substances. Surface active substances, such as fatty acids, may enhance absorption of these substances by affecting the integrity of TJ and increasing the permeability. It has been suggested that aluminium (Al) absorption occurs mainly by the paracellular route. Herein, we investigated if physiologically relevant exposures of fully differentiated Caco-2 cell monolayers to oleic acid and docosahexaenoic acid (DHA), which are fatty acids common in food, increase absorption of Al and the paracellular marker mannitol. In an Al toxicity test, mannitol and Al absorption through Caco-2 cell monolayers were similarly modulated by Al concentrations between 1 and 30mM, suggesting that absorption of the two compounds occurred via the same pathways. Exposure of Caco-2 cell monolayers to non-toxic concentrations of Al (2mM) and (14)C-mannitol in fatty acid emulsions (15 and 30mM oleic acid, 5 and 10mM DHA) caused a decreased transepithelial electrical resistance (TEER). Concomitantly, fractional absorption of Al and mannitol, expressed as percentage of apical Al and mannitol retrieved at the basolateral side, increased with increasing dose of fatty acids. Transmission electron microscopy was applied to assess the effect of oleic acid on the morphology of TJ. It was shown that oleic acid caused a less structured morphology of TJ in Caco-2 cell monolayers. Taken together our findings indicate that fatty acids common in food increase the paracellular intestinal absorption of Al. These findings may influence future risk assessment of human Al exposure. http://www.ncbi.nlm.nih.gov/pubmed/?term=19576870 Archives Of Toxicology • November 2009 Aluminium neurotoxicity: neurobehavioural and oxidative aspects “Aluminium is the most widely distributed Author information metal in the environment and is extensively Kumar V1, Gill KD. used in daily life that provides easy exposure Abstract Aluminium is the most widely distributed metal in the environment and is extensively used in daily life that provides easy exposure to human beings. The exposure to this toxic metal occurs through air, food and water. However, there is no known physiological role for aluminium within the body and hence this metal may produce adverse physiological effects. Chronic exposure of animals to aluminium is associated with behavioural, neuropathological and neurochemical changes. Among them, deficits of learning and behavioural functions are most evident. Some epidemiological studies have shown poor performance in cognitive tests and a higher abundance of neurological symptoms for workers occupationally exposed to aluminium. However, in contrast to well established neurotoxic effects, neurobehavioural studies of aluminium in rodents have generally not produced consistent results. Current researches show that any impairment in mitochondrial functions may play a major role in many human disorders including neurodegenerative disorders. Being involved in the production of reactive oxygen species, aluminium may cause impairments in mitochondrial bioenergetics and may lead to the generation of oxidative stress which may lead to a gradual accumulation of oxidatively modified cellular proteins. In this review, the neuropathologies associated with aluminium exposure in terms of neurobehavioural changes have been discussed. In addition, the impact of aluminium on the mitochondrial functions has also been highlighted. http://www.ncbi.nlm.nih.gov/pubmed/?term=19568732 to human beings. The exposure to this toxic metal occurs through air, food and water. However, there is no known physiological role for aluminium within the body and hence this metal may produce adverse physiological effects. Chronic exposure of animals to aluminium is associated with behavioural, neuropathological and neurochemical changes. Among them, deficits of learning and behavioural functions are most evident.” Journal Of Inorganic Biochemistry • November 2009 Long-term persistence of vaccine-derived aluminum hydroxide is associated with chronic cognitive dysfunction Author information Couette M1, Boisse MF, Maison P, Brugieres P, Cesaro P, Chevalier X, Gherardi RK, Bachoud-Levi AC, Authier FJ. INSERM, Unite U955, Team 1, Creteil F-94010, France Abstract Macrophagic myofasciitis (MMF) is an emerging condition, characterized by specific muscle lesions assessing long-term persistence of aluminum hydroxide within macrophages at the site of previous immunization. Affected patients mainly complain of arthromyalgias, chronic fatigue, and cognitive difficulties. We designed a comprehensive battery of neuropsychological tests to prospectively delineate MMF-associated cognitive dysfunction (MACD). Compared to control patients with arthritis and chronic pain, MMF patients had pronounced and specific cognitive impairment. MACD mainly affected (i) both visual and verbal memory; (ii) executive functions, including attention, working memory, and planning; and (iii) left ear extinction at dichotic listening test. Cognitive deficits did not correlate with pain, fatigue, depression, or disease duration. Pathophysiological mechanisms underlying MACD remain to be determined. In conclusion, long-term persistence of vaccine-derived aluminum hydroxide within the body assessed by MMF is associated with cognitive dysfunction, not solely due to chronic pain, fatigue and depression. http://www.ncbi.nlm.nih.gov/pubmed/19748679 “In conclusion, long-term persistence of vaccine-derived aluminum hydroxide within the body assessed by MMF is associated with cognitive dysfunction, not solely due to chronic pain, fatigue and depression.” Journal Of Inorganic Biochemistry • November 2009 Aluminum hydroxide injections ‘ lead to motor deficits and motor neuron degeneration Author information Shaw CA1, Petrik MS. Departments of Ophthalmology and Visual Sciences University of British Columbia, Vancouver British Columbia, Canada cashawlab@gmail.com Abstract Gulf War Syndrome is a multi-system disorder afflicting many veterans of Western armies in the 1990-1991 Gulf War. A number of those afflicted may show neurological deficits including various cognitive dysfunctions and motor neuron disease, the latter expression virtually indistinguishable from classical amyotrophic lateral sclerosis (ALS) except for the age of onset. This ALS “cluster” represents the second such ALS cluster described in the literature to date. Possible causes of GWS include several of the adjuvants in the anthrax vaccine and others. The most likely culprit appears to be aluminum hydroxide. In an initial series of experiments, we examined the potential toxicity of aluminum hydroxide in male, outbred CD-1 mice injected subcutaneously in two equivalent-to-human doses. After sacrifice, spinal cord and motor cortex samples were examined by immunohistochemistry. Aluminum-treated mice showed significantly increased apoptosis of motor neurons and increases in reactive astrocytes and microglial proliferation within the spinal cord and cortex. Morin stain detected the presence of aluminum in the cytoplasm of motor neurons with some neurons also testing positive for the presence of hyper-phosphorylated tau protein, a pathological hallmark of various neurological diseases, including Alzheimer’s disease and frontotemporal dementia. A second series of experiments was conducted on mice injected with six doses of aluminum hydroxide. Behavioural analyses in these mice revealed significant impairments in a number of motor functions as well as diminished spatial memory capacity. The demonstrated neurotoxicity of aluminum hydroxide and its relative ubiquity as an adjuvant suggest that greater scrutiny by the scientific community is warranted. http://www.ncbi.nlm.nih.gov/pubmed/19740540 “Possible causes of Gulf War Syndrome include several of the adjuvants in the anthrax vaccine and others. The most likely culprit appears to be aluminum hydroxide.” Nanomedicine • December 2009 Glia activation induced by peripheral administration of aluminum oxide nanoparticles in rat brains Author information Li XB1, Zheng H, Zhang ZR, Li M, Huang ZY, Schluesener HJ, Li YY, Xu SQ. MOE Key Lab, Institute of Environmental Medicine School of Public Health, Tongji Medical College Huazhong University of Science and Technology Wuhan, China Abstract With the wide application of nanoscaled particles, the risk of human exposure to these particles has been markedly increased. However, knowledge about their safety falls far behind the utility of these nanoparticles. Here we have analyzed the activation of brain microglia and astrocytes, which are sensitive to changes of brain environment after peripheral exposure to nanoscaled aluminum oxide suspension. Sprague-Dawley rats (six rats per treatment) were intraperitoneally injected once every second day for 30 or 60 days with nanoscaled aluminum oxide (NSAO; 1 mg/kg or 50 mg/kg), non-nanoscaled aluminum oxide (nNSAO, 1 mg/kg), or vehicle (saline). After 60 days’ exposure the numbers of ED1+, GFAP+, and nestin+ cells in cortex and hippocampus were significantly higher in NSAO-treated rats than nNSAO- or vehicle-treated rats; thus, compared with nNSAO, NSAO has potential effects on the innate immune system of rat brain. This should be considered when evaluating the toxicological effects of nanosized particles. From The Clinical Editor Sprague-Dawley rats were intraperitoneally injected with nanosized aluminum oxide, (NSAO); non-nanoscaled aluminum oxide, or vehicle (saline). The numbers of ED1+, GFAP+, and nestin+ cells in cortex and hippocampus were significantly higher in NSAO-treated rats than nNSAO- or vehicletreated rats; thus, NSAO has potential effects on the innate immune system of rat brain. http://www.ncbi.nlm.nih.gov/pubmed/19523415 “With the wide application of nanoscaled particles, the risk of human exposure to these particles has been markedly increased. However, knowledge about their safety falls far behind the utility of these nanoparticles ... [aluminum] has potential effects on the innate immune system of rat brain.” CellPress Nucleus Mitochondria & Metabolism Volume 34, Issue 12, p589–593, December 2009 Darwin, natural selection and the biological essentiality of aluminium and silicon by Christopher Exley The Birchall Centre, Lennard-Jones Laboratories, Keele University, Staffordshire, ST5 5BG, UK Absract If one was asked to produce a set of ‘Trump Cards™’ based upon ‘Forces of Nature Defining Life on Earth’ then which card would be ‘Top Trump’? I was recently chastised on the Darwin Today website for suggesting Darwin and ‘natural selection’ rather than, for example, Newton and ‘gravity’. Although there is no denying the significance of gravity, my argument in favour of natural selection is simply that gravity is just one factor that contributes towards an outcome which ultimately is defined by natural selection. Both the beauty and the brilliance of natural selection are reflected in its omnipotence to explain the myriad observations of life and, as I will affirm herein, its explanation of the biological essentiality of aluminium and silicon is no exception. Together they constitute a form of homeostasis with aluminium being retained both physically and chemically in myriad forms and each form being capable of acting as a sink or source of labile and potentially biologically reactive aluminium. It is always important to emphasise that there is no evolutionarily directed or conserved biology to enable aluminium homeostasis and so this non-essential but highly biologically reactive metal cation is at the whim of the predominant or pre-eminent chemistry of any particular environment [8] [9]. This unpredictability makes biologically available aluminium a concern for all forms of life on Earth [2]. In this year, 200th anniversary of the birth of Charles Darwin and the 150th anniversary of the publication of On the Origin of Species, a UK scientist has used Darwin’s seminal work on Natural Selection in helping to define the biological essentiality of the second (silicon) and third (aluminium) most abundant elements of the Earth’s crust. means that those characteristics which convey fitness in one environment may not convey fitness in another, perhaps adjacent, environment or niche. This is both the strength and the beauty of natural selection and it can be applied to cellular biochemistry as it is applied to speciation of organisms. “This unpredictability Aluminium is biologically reactive, while silicon is biologically inert. Natural selection informs us that the non-essentiality of aluminium is explained by its non-participation in biochemical evolution due to a complete lack of its biologically reactive forms. available aluminium On the other hand the biologically available form of silicon (silicic acid) has been extremely abundant throughout biochemical evolution and its biological essentiality has been dictated by its extremely limited biological reactivity. makes biologically a concern for all forms of life on Earth.” It is no coincidence that one of the very few reactions of silicic acid is that with aluminium and that this reaction protects against the toxicity of aluminium. An essential role of silicon throughout biochemical evolution has been to keep aluminium out of life! However, the activities of humans in learning how to extract aluminium from its ores and using it in myriad ways in what is now the Aluminium Age means that Earth’s inherent protection against the toxicity of aluminium is being compromised and that biologically reactive aluminium is now an active participant in biochemical (and hence human) evolution. The lack of any clear or significant biological essentiality for both of these elements is a mystery as all other abundant elements of the Earth’s crust are known to be biologically essential. Some of the early results of the arrival of biochemically reactive aluminium have been worryingly obvious, including the death of fish and trees in geographical regions impacted by acid deposition, whereas others, and perhaps those which in particular are linked with the human condition, might yet be too subtle to be directly attributable to the participation of biologically-reactive aluminium in the natural selection of the elements of biological essentiality. Dr Chris Exley, Reader in Bioinorganic Chemistry at Keele University and a world authority on the ways in which aluminium impacts upon life on Earth, says natural selection is often interpreted as ‘survival of the fittest’ but what is often not appreciated is that the selection processes themselves are niche driven, which Link: I can’t provide a link for this report and I’m certain that this is not the complete report. The text above consists of excerpts found in other reports that reference this one using a variety of internet search terms. The complete document requires purchase: http://www.cell.com/trends/biochemical-sciences/abstract/S0968-0004(09)00167-4?_returnURL=http%3A%2F%2Flinkinghub.elsevier.com%2Fretrieve%2Fpii%2FS0968000409001674%3Fshowall%3Dtrue Trends In Immunology • March 2010 The immunobiology of aluminium adjuvants: how do they really work? Author information Exley C1, Siesjö P, Eriksson H. The Birchall Centre Lennard-Jones Laboratories Keele University, Staffordshire, ST5 5BG, UK c.exley@chem.keele.ac.uk Abstract Aluminium adjuvants potentiate the immune response, thereby ensuring the potency and efficacy of typically sparingly available antigen. Their concomitant critical importance in mass vaccination programmes may have prompted recent intense interest in understanding how they work and their safety. Progress in these areas is stymied, however, by a lack of accessible knowledge pertaining to the bioinorganic chemistry of aluminium adjuvants, and, consequently, the inappropriate application and interpretation of experimental models of their mode of action. The objective herein is, therefore, to identify the many ways that aluminium chemistry contributes to the wide and versatile armoury of its adjuvants, such that future research might be guided towards a fuller understanding of their role in human vaccinations. http://www.ncbi.nlm.nih.gov/pubmed/20153253 “Progress in these areas [aluminum research] is stymied, however, by a lack of accessible knowledge pertaining to the bioinorganic chemistry of aluminium adjuvants, and, consequently, the inappropriate application and interpretation of experimental models of their mode of action.” “Preterm neonates receiving parenteral nutrition are at risk of aluminum overload because of the presence of aluminum as a contaminant in parenteral formulations. Despite US Food and Drug Administration regulation, commercial products continue to present Al contamination. Moreover, premature neonates were receiving, on average, 3 times the amount considered by the Food and Drug Administration as a safe limit.” Journal Of Pediatric Gastroenterology And Nutrition • August 2010 Aluminum loading in preterm neonates revisited Author information Bohrer D1, Oliveira SM, Garcia SC, Nascimento PC, Carvalho LM. Department of Chemistry Universidade Federal de Santa Maria Santa Maria, RS, Brazil ndenise@quimica.ufsm.br Abstract Preterm neonates receiving parenteral nutrition are at risk of aluminum (Al) overload because of the presence of Al as a contaminant in parenteral formulations. Despite US Food and Drug Administration regulation, commercial products continue to present Al contamination. To reassess Al exposure in the premature neonatal population, the present study evaluated the Al balance (intake vs urinary excretion) in a group of preterm neonates during the period in which they stayed in the intensive care unit (NICU) under total parenteral nutrition. For the 10 patients selected, daily infusion solutions (nutrition and medication) were collected and the level of Al contamination was measured. From the urine collected daily, an aliquot was taken for Al determination. Blood was also collected for Al determination on the first and last day in the NICU. The measurements were carried out by atomic absorption spectrometry. The difference between Al administered and excreted revealed that 56.2% +/- 22.7% of the Al intake was not eliminated. The mean serum Al levels from the first to the last day decreased from 41.2 +/- 23.3 to 23.5 +/- 11.2 microg/L. The resulting mean Al daily intake of the 10 patients was 15.2 +/- 8.0 microg x kg(-1) x day(-1). Because Al intake was higher than that excreted and Al in serum decreased to practically half during the period in the NICU (+/-7.3 days), some amount of Al deposition occurred. Moreover, premature neonates were receiving, on average, 3 times the amount of 5 microg x kg(-1) x day(-1), considered by the Food and Drug Administration as a safe limit. http://www.ncbi.nlm.nih.gov/pubmed/?term=20479688 “... the vulnerability of infants to early exposure to aluminium serves to highlight an urgent need to reduce the aluminium content of infant formulas ...” BMC Pediatrics • August 2010 There is (still) too much aluminium in infant formulas Author information Burrell SA1, Exley C. The Birchall Centre, Lennard-Jones Laboratories, Keele University, Staffordshire, UK Abstract BACKGROUND Infant formulas are sophisticated milk-based feeds for infants which are used as a substitute for breast milk. Historically they are known to be contaminated by aluminium and in the past this has raised health concerns for exposed infants. We have measured the aluminium content of a number of widely used infant formulas to determine if their contamination by aluminium and consequent issues of child health persists. METHODS Samples of ready-made milks and powders used to make milks were prepared by microwave digestion of acid/peroxide mixtures and their aluminium content determined by THGA. RESULTS The concentration of aluminium in ready-made milks varied from ca 176 to 700 μg/L. The latter concentration was for a milk for preterm infants. The aluminium content of powders used to make milks varied from ca 2.4 to 4.3 μg/g. The latter content was for a soya-based formula and equated to a ready-to-drink milk concentration of 629 μg/L. Using the manufacturer’s own guidelines of formula consumption the average daily ingestion of aluminium from infant formulas for a child of 6 months varied from ca 200 to 600 μg of aluminium. Generally ingestion was higher from powdered as compared to ready-made formulas. CONCLUSIONS The aluminium content of a range of well known brands of infant formulas remains high and particularly so for a product designed for preterm infants and a soya-based product designed for infants with cow’s milk intolerances and allergies. Recent research demonstrating the vulnerability of infants to early exposure to aluminium serves to highlight an urgent need to reduce the aluminium content of infant formulas to as low a level as is practically possible. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2939626/ Neurotoxicology • September 2010 The neurotoxicity of environmental aluminum is still an issue Author information Bondy SC. Program in Environmental Toxicology Division Occupational and Environmental Health Department of Medicine, University of California Irvine, CA 92697-1825, USA scbondy@uci.edu “Emphasis is given to the potential role of aluminum in Abstract acceleration and promotion of Evidence for the neurotoxicity of extended exposure to low levels of aluminum salts is described using an animal model treated with aluminum at low levels reflecting those found in some water supplies. Emphasis is given to the potential role of aluminum in acceleration and promotion of some indices characteristic of brain aging. These hallmarks include the appearance of excess levels of inflammation in specific brain areas. Aluminum salts can increase levels of glial activation, inflammatory cytokines and amyloid precursor protein within the brain. Both normal brain aging and to a greater extent, Alzheimer’s disease are associated with elevated basal levels of markers for inflammation. These are not attributable to obvious exogenous stimuli and may reflect the lifespan history of the organism’s immune responses. It is possible that aluminum salts can act as a subtle promoter of such apparently unprovoked responses. some indices characteristic of http://www.ncbi.nlm.nih.gov/pubmed/?term=20553758 brain aging. These hallmarks include the appearance of excess levels of inflammation in specific brain areas.” Journal Of Exposure Science & Environmental Epidemiology • November 2010 Infants’ exposure to aluminum from vaccines and breast milk during the first 6 months Author information Dórea JG1, Marques RC. Department of Nutrition Universidade de Brasília Brasília, DF, Brazil dorea@rudah.com.br Abstract The success of vaccination programs in reducing and eliminating infectious diseases has contributed to an ever-increasing number of vaccines given at earlier ages (newborns and infants). Exposure to low levels of environmental toxic substances (including metals) at an early age raises plausible concerns over increasingly lower neuro-cognitive rates. Current immunization schedules with vaccines containing aluminum (as adjuvant) are given to infants, but thimerosal (as preservative) is found mostly in vaccines used in non-industrialized countries. Exclusively, breastfed infants (in Brazil) receiving a full recommended schedule of immunizations showed an exceedingly high exposure of Al (225 to 1750 μg per dose) when compared with estimated levels absorbed from breast milk (2.0 μg). This study does not dispute the safety of vaccines but reinforces the need to study long-term effects of early exposure to neuro-toxic substances on the developing brain. Pragmatic vaccine safety needs to embrace conventional toxicology, addressing especial characteristics of unborn fetuses, neonates and infants exposed to low levels of aluminum, and ethylmercury traditionally considered innocuous to the central nervous system. http://www.ncbi.nlm.nih.gov/pubmed/20010978 “Exclusively, breastfed infants (in Brazil) receiving a full recommended schedule of immunizations showed an exceedingly high exposure of Aluminum (225 to 1750 μg per dose) when compared with estimated levels absorbed from breast milk (2.0 μg).” Pharmacological Reports • November 2010 Effects of ethylene glycol ethers on cell viability in the human neuroblastoma SH-SY5Y cell line Author information Regulska M1, Pomierny B, Basta-Kaim A, Starek A, Filip M, Lason W, Budziszewska B. Department of Experimental Neuroendocrinology Institute of Pharmacology Polish Academy of Sciences Sm∼tna 12, PL 31-343 Kraków, Poland Abstract Ethylene glycol ethers (EGEs) are a class of chemicals used extensively in the manufacture of a wide range of domestic and industrial products, which may result in human exposure and toxicity. Hematologic and reproductive toxicity of EGEs are well known whereas their action on neuronal cell viability has not been studied so far. In the present study, we investigated the effects of some EGEs on cell viability and on the hydrogen peroxide-induced damage in the human neuroblastoma (SH-SY5Y) cells. It has been found that 2-phenoxyethanol in a concentration-dependent manner (5-25 mM, 24 h) increased the basal and H(2)O(2)-induced lactate dehydrogenase (LDH) release and 3-[4,5-dimethylthiazol-2-yl]2,5-diphenyl tetrazolium bromide (MTT) reduction. 2-Butoxyethanol given alone did not affect LDH release and MTT reduction but concentration-dependently enhanced the cytotoxic effect of H(2)O(2). 2-Isopropoxyethanol significantly and concentration-dependently (1-25 mM) increased the basal LDH release and attenuated MTT reduction, but did not potentiate the cytotoxic effect of H(2)O(2). Contrary to this, 2-methoxyethanol did not show a cytotoxic effect while 2-ethoxyethanol at high concentrations intensified the hydrogen peroxide action. This study demonstrated that among the EGEs studied, 2-phenoxyethanol showed the most consistent cytotoxic effect on neurons in in vitro conditions and enhanced the hydrogen peroxide action. 2-Isopropoxyethanol had also a potent cytotoxic effect, but it did not enhance the hydrogen peroxide action, whereas 2-butoxyethanol only potentiated cytotoxic effect of H(2)O(2). It is concluded that the results of the present study should be confirmed in in vivo conditions and that some EGEs, especially 2-phenoxyethanol, 2-butoxyethanol and 2-isopropoxyethanol, may be responsible for initiation or exacerbation of neuronal cell damage. http://www.ncbi.nlm.nih.gov/pubmed/?term=21273685 “2-phenoxyethanol showed the most consistent cytotoxic effect on neurons in in vitro conditions and enhanced the hydrogen peroxide action.” Environmental Health And Preventative Medicine • January 2011 Gene expression in primary cultured astrocytes affected by aluminum: alteration of chaperons involved in protein folding Author information Aremu DA1, Ezomo OF, Meshitsuka S. Division of Integrative Bioscience Institute for Regenerative Medicine and Biofunction Graduate School of Medical Science Tottori University, Yonago, Tottori, 683-8503, Japan Abstract OBJECTIVES Aluminum is notorious as a neurotoxic metal. The aim of our study was to determine whether endoplasmic reticulum (ER) stress is involved in aluminum-induced apoptosis in astrocytes. “The results of this study METHODS Mitochondrial RNA (mRNA) was analyzed by reverse transcription (RT)-PCR following pulse exposure of aluminum glycinate to primary cultured astrocytes. Tunicamycin was used as a positive control. apoptosis in astrocytes via ER stress by RESULTS Gene expression analysis revealed that Ire1∼ was up-regulated in astrocytes exposed to aluminum while Ire1 was up-regulated by tunicamycin. Exposure to aluminum glycinate, in contrast to tunicamycin, seemed to down-regulate mRNA expression of many genes, including the ER resident molecular chaperone BiP/Grp78 and Ca(2+)-binding chaperones (calnexin and calreticulin), as well as stanniocalcin 2 and OASIS. The down-regulation or non-activation of the molecular chaperons, whose expressions are known to be protective by increasing protein folding, may spell doom for the adaptive response. Exposure to aluminum did not have any significant effects on the expression of Bax and Bcl2 in astrocytes. CONCLUSIONS The results of this study demonstrate that aluminum may induce apoptosis in astrocytes via ER stress by impairing the protein-folding machinery. http://www.ncbi.nlm.nih.gov/pubmed/21432213 demonstrate that aluminum may induce impairing the protein-folding machinery.” “aluminum (Al), plays a relevant role in affecting Aß aggregation and neurotoxicity.” PLoS One • January 2011 Microarray Analysis on Human Neuroblastoma Cells Exposed to Aluminum, ß1–42-Amyloid or the ß1–42-Amyloid Aluminum Complex Valentina Gatta, Denise Drago, Karina Fincati, Maria Teresa Valenti, Luca Dalle Carbonare, Stefano L. Sensi, Paolo Zatta Abstract Background A typical pathological feature of Alzheimer’s disease (AD) is the appearance in the brain of senile plaques made up of ß-amyloid (Aß) and neurofibrillary tangles. AD is also associated with an abnormal accumulation of some metal ions, and we have recently shown that one of these, aluminum (Al), plays a relevant role in affecting Aß aggregation and neurotoxicity. Methodology In this study, employing a microarray analysis of 35,129 genes, we investigated the effects induced by the exposure to the Aß1–42-Al (Aß-Al) complex on the gene expression profile of the neuronal-like cell line, SH-SY5Y. Principal Findings The microarray assay indicated that, compared to Aß or Al alone, exposure to Aß-Al complex produced selective changes in gene expression. Some of the genes selectively over or underexpressed are directly related to AD. A further evaluation performed with Ingenuity Pathway analysis revealed that these genes are nodes of networks and pathways that are involved in the modulation of Ca2+ homeostasis as well as in the regulation of glutamatergic transmission and synaptic plasticity. Conclusions and Significance Aß-Al appears to be largely involved in the molecular machinery that regulates neuronal as well as synaptic dysfunction and loss. Aß-Al seems critical in modulating key AD-related pathways such as glutamatergic transmission, Ca2+ homeostasis, oxidative stress, inflammation, and neuronal apoptosis. http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0015965#authcontrib Monatshefte für Chemie - Chemical Monthly • April 2011 Aluminium in the human brain Christopher Exley , Emily R. House Abstract An inevitable consequence of humans living in the Aluminium Age is the presence of aluminium in the brain. This non-essential, neurotoxic metal gains entry to the brain throughout all stages of human development, from the foetus through to old age. Human exposure to myriad forms of this ubiquitous and omnipresent metal makes its presence in the brain inevitable, while the structure and physiology of the brain makes it particularly susceptible to the accumulation of aluminium with age. In spite of aluminium’s complete lack of biological essentiality, it actually participates avidly in brain biochemistry and substitutes for essential metals in critical biochemical processes. The degree to which such substitutions are disruptive and are manifested as biological effects will depend upon the biological availability of aluminium in any particular physical or chemical compartment, and will under all circumstances be exerting an energy load on the brain. In short, the brain must expend energy in its ‘unconscious’ response to an exposure to biologically available aluminium. There are many examples where ‘biological effect’ has resulted in aluminium-induced neurotoxicity and most potently in conditions that have resulted in an aluminium-associated encephalopathy. However, since aluminium is non-essential and not required by the brain, its biological availability will only rarely achieve such levels of acuity, and it is more pertinent to consider and investigate the brain’s response to much lower though sustained levels of biologically reactive aluminium. This is the level of exposure that defines the putative role of aluminium in chronic neurodegenerative disease and, though thoroughly investigated in numerous animal models, the chronic toxicity of aluminium has yet to be addressed experimentally in humans. A feasible test of the ‘aluminium hypothesis’, whereby aluminium in the human brain is implicated in chronic neurodegenerative disease, would be to reduce the brain’s aluminium load to the lowest possible level by non-invasive means. The simplest way that this aim can be fulfilled in a significant and relevant population is by facilitating the urinary excretion of aluminium through the regular drinking of a silicic acid-rich mineral water over an extended time period. This will lower the body and brain burden of aluminium, and by doing so will test whether brain aluminium contributes significantly to chronic neurodegenerative diseases such as Alzheimer’s and Parkinson’s. http://link.springer.com/article/10.1007%2Fs00706-010-0417-y Vaccine • August 2011 Letter to the Editor Aluminium-based adjuvants should not be used as placebos in clinical trials by Christopher Exley The Birchall Centre, Lennard-Jones Laboratories, Keele University, Staffordshire, UK August 2011 Report available for purchase $39.95 http://www.ncbi.nlm.nih.gov/pubmed/?term=21871940 [Vaccine manufacturers use aluminum-based adjuvants with controls in clinical trials meaning adverse affects of aluminum will go unnoticed] “Aluminium ... has no known biological role. It accumulates in the body when protective gastrointestinal mechanisms are bypassed ...” [for example, when it’s injected] Proceedings Of The Nutrition Society • August 2011 Aluminium exposure from parenteral nutrition in preterm infants and later health outcomes during childhood and adolescence Author information Fewtrell MS1, Edmonds CJ, Isaacs E, Bishop NJ, Lucas A. Childhood Nutrition Research Centre, UCL Institute of Child Health 30 Guilford Street, London WC1N 1EH, UK m.fewtrell@ich.ucl.ac.uk Abstract Aluminium is the most common metallic element, but has no known biological role. It accumulates in the body when protective gastrointestinal mechanisms are bypassed, renal function is impaired, or exposure is high - all of which apply frequently to preterm infants. Recognised clinical manifestations of aluminium toxicity include dementia, anaemia and bone disease. Parenteral nutrition (PN) solutions are liable to contamination with aluminium, particularly from acidic solutions in glass vials, notably calcium gluconate. When fed parenterally, infants retain >75% of the aluminium, with high serum, urine and tissue levels. Later health effects of neonatal intravenous aluminium exposure were investigated in a randomised trial comparing standard PN solutions with solutions specially sourced for low aluminium content. Preterm infants exposed for >10 d to standard solutions had impaired neurologic development at 18 months. At 13-15 years, subjects randomised to standard PN had lower lumbar spine bone mass; and, in non-randomised analyses, those with neonatal aluminium intake above the median had lower hip bone mass. Given the sizeable number of infants undergoing intensive care and still exposed to aluminium via PN, these findings have contemporary relevance. Until recently, little progress had been made on reducing aluminium exposure, and meeting Food and Drug Administration recommendations (<5 μg/kg per d) has been impossible in patients <50 kg using available products. Recent advice from the UK Medicines and Healthcare regulatory Authority that calcium gluconate in small volume glass containers should not be used for repeated treatment in children <18 years, including preparation of PN, is an important step towards addressing this problem. http://www.ncbi.nlm.nih.gov/pubmed/?term=21781356 Journal Of Inorganic Biochemistry • November 2011 Do aluminum vaccine adjuvants contribute to the rising prevalence of autism? Author information Tomljenovic L1, Shaw CA. Neural Dynamics Research Group Department of Ophthalmology and Visual Sciences University of British Columbia 828 W. 10th Ave, Vancouver, BC Canada V5Z 1L8 lucijat77@gmail.com Abstract Autism spectrum disorders (ASD) are serious multisystem developmental disorders and an urgent global public health concern. Dysfunctional immunity and impaired brain function are core deficits in ASD. Aluminum (Al), the most commonly used vaccine adjuvant, is a demonstrated neurotoxin and a strong immune stimulator. Hence, adjuvant Al has the potential to induce neuroimmune disorders. When assessing adjuvant toxicity in children, two key points ought to be considered: (i) children should not be viewed as “small adults” as their unique physiology makes them much more vulnerable to toxic insults; and (ii) if exposure to Al from only few vaccines can lead to cognitive impairment and autoimmunity in adults, is it unreasonable to question whether the current pediatric schedules, often containing 18 Al adjuvanted vaccines, are safe for children? By applying Hill’s criteria for establishing causality between exposure and outcome we investigated whether exposure to Al from vaccines could be contributing to the rise in ASD prevalence in the Western world. Our results show that: (i) children from countries with the highest ASD prevalence appear to have the highest exposure to Al from vaccines; (ii) the increase in exposure to Al adjuvants significantly correlates with the increase in ASD prevalence in the United States observed over the last two decades (Pearson r=0.92, p<0.0001); and (iii) a significant correlation exists between the amounts of Al administered to preschool children and the current prevalence of ASD in seven Western countries, particularly at 3-4 months of age (Pearson r=0.89-0.94, p=0.0018-0.0248). The application of the Hill’s criteria to these data indicates that the correlation between Al in vaccines and ASD may be causal. Because children represent a fraction of the population most at risk for complications following exposure to Al, a more rigorous evaluation of Al adjuvant safety seems warranted. http://www.ncbi.nlm.nih.gov/pubmed/22099159 “Our results show that: (i) children from countries with the highest Autistic Spectrum Disorder prevalence appear to have the highest exposure to Aluminum from vaccines; (ii) the increase in exposure to Al adjuvants significantly correlates with the increase in Autistic Spectrum Disorder prevalence in the United States observed over the last two decades and (iii) a significant correlation exists between the amounts of Aluminum administered to preschool children and the current prevalence of Autistic Spectrum Disorder in seven Western countries, particularly at 3-4 months of age.” Journal Of Inorganic Biochemistry • November 2011 Aluminium and human breast diseases Author information Darbre PD1, Pugazhendhi D, Mannello F. Biomedical Sciences Section School of Biological Sciences University of Reading, Reading RG6 6UB, UK p.d.darbre@reading.ac.uk Abstract The human breast is exposed to aluminium from many sources including diet and personal care products, but dermal application of aluminium-based antiperspirant salts provides a local long-term source of exposure. Recent measurements have shown that aluminium is present in both tissue and fat of the human breast but at levels which vary both between breasts and between tissue samples from the same breast. We have recently found increased levels of aluminium in noninvasively collected nipple aspirate fluids taken from breast cancer patients (mean 268 ± 28 μg/l) compared with control healthy subjects (mean 131 ± 10 μg/l) providing evidence of raised aluminium levels in the breast microenvironment when cancer is present. The measurement of higher levels of aluminium in type I human breast cyst fluids (median 150 μg/l) compared with human serum (median 6 μg/l) or human milk (median 25 μg/l) warrants further investigation into any possible role of aluminium in development of this benign breast disease. Emerging evidence for aluminium in several breast structures now requires biomarkers of aluminium action in order to ascertain whether the presence of aluminium has any biological impact. To this end, we report raised levels of proteins that modulate iron homeostasis (ferritin, transferrin) in parallel with raised aluminium in nipple aspirate fluids in vivo, and we report overexpression of mRNA for several S100 calcium binding proteins following long-term exposure of MCF-7 human breast cancer cells in vitro to aluminium chlorhydrate. http://www.ncbi.nlm.nih.gov/pubmed/?term=22099158 “Recent measurements have shown that aluminium is present in both tissue and fat of the human breast but at levels which vary both between breasts and between tissue samples from the same breast. We have recently found increased levels of aluminium in noninvasively collected nipple aspirate fluids taken from breast cancer patients (mean 268 ± 28 μg/l) compared with control healthy subjects (mean 131 ± 10 μg/l) providing evidence of raised aluminium levels in the breast microenvironment when cancer is present.” Journal Of Inorganic Biochemistry • November 2011 Long-term follow-up of cognitive dysfunction in patients with aluminum hydroxide-induced macrophagic myofasciitis (MMF) Author information Passeri E1, Villa C, Couette M, Itti E, Brugieres P, Cesaro P, Gherardi RK, Bachoud-Levi AC, Authier FJ. Paris Est-Creteil University & Henri-Mondor University Hospital (APHP) Reference Center for Neuromuscular Diseases Garches-Necker-Mondor-Hendaye Creteil, F-94010, France Abstract Macrophagic myofasciitis (MMF) is characterized by specific muscle lesions assessing long-term persistence of aluminum hydroxide within macrophages at the site of previous immunization. Affected patients are middle-aged adults, mainly presenting with diffuse arthromyalgias, chronic fatigue, and cognitive dysfunction. Representative features of MMF-associated cognitive dysfunction (MACD) include (i) dysexecutive syndrome; (i) visual memory; (iii) left ear extinction at dichotic listening test. In present study we retrospectively evaluated the progression of MACD in 30 MMF patients. Most patients fulfilled criteria for non-amnestic/dysexecutive mild cognitive impairment, even if some cognitive deficits seemed unusually severe. MACD remained stable over time, although dysexecutive syndrome tended to worsen. Long-term follow-up of a subset of patients with 3 or 4 consecutive neuropsychological evaluations confirmed the stability of MACD with time, despite marked fluctuations. http://www.ncbi.nlm.nih.gov/pubmed/22099155 “Macrophagic myofasciitis (MMF) is characterized by specific muscle lesions assessing long-term persistence of aluminum hydroxide within macrophages at the site of previous immunization.” Journal Of Inorganic Biochemistry • November 2011 Towards the prevention of potential aluminum toxic effects and an effective treatment for Alzheimer’s disease Author information Percy ME1, Kruck TP, Pogue AI, Lukiw WJ. Neurogenetics Laboratory Surrey Place Centre, Toronto, ON Canada M5S 2C2 maire.percy@utoronto.ca Abstract In 1991, treatment with low dose intramuscular desferrioxamine (DFO), a trivalent chelator that can remove excessive iron and/or aluminum from the body, was reported to slow the progression of Alzheimer’s disease (AD) by a factor of two. Twenty years later this promising trial has not been followed up and why this treatment worked still is not clear. In this critical interdisciplinary review, we provide an overview of the complexities of AD and involvement of metal ions, and revisit the neglected DFO trial. We discuss research done by us and others that is helping to explain involvement of metal ion catalyzed production of reactive oxygen species in the pathogenesis of AD, and emerging strategies for inhibition of metal-ion toxicity. Highlighted are insights to be considered in the quests to prevent potentially toxic effects of aluminum toxicity and prevention and intervention in AD. http://www.ncbi.nlm.nih.gov/pubmed/?term=22099160 “Highlighted are insights to be considered in the quests to prevent potentially toxic effects of aluminum toxicity and prevention and intervention in AD.” Journal Of Inorganic Biochemistry • November 2011 Aluminum toxicity and astrocyte dysfunction: a metabolic link to neurological disorders Author information Lemire J., Appanna VD. Department of Chemistry and Biochemistry Laurentian University, Sudbury, Ontario Canada P3E 2C6 Abstract Aluminum (Al) has been implicated in a variety of neurological diseases. However, the molecular mechanisms that enable Al to be involved in these disorders have yet to be fully delineated. Using astrocytes as a model of the cerebral cellular system, we have uncovered the biochemical networks that are affected by Al toxicity. In this review, we reveal how the inhibitory influence of Al on ATP production and on mitochondrial functions help generate globular astrocytes that are fat producing machines. These biological events may be the contributing factors to Al-triggered brain disorders. http://www.ncbi.nlm.nih.gov/pubmed/?term=22099161 “Aluminum (Al) has been implicated in a variety of neurological diseases. However, the molecular mechanisms that enable Al to be involved in these disorders have yet to be fully delineated. These biological events may be the contributing factors to Al-triggered brain disorders.” IOS Press Library • November 2011 Aluminum and Alzheimer’s Disease: After a Century of Controversy, Is there a Plausible Link? Author Information Tomljenovic, Lucija Neural Dynamics Research Group Department of Ophthalmology and Visual Sciences University of British Columbia Vancouver, BC, Canada “Research, however, reveals that: 1) very small amounts of Al are needed to produce neurotoxicity and this criterion is satisfied through dietary Al intake Abstract The brain is a highly compartmentalized organ exceptionally susceptible to accumulation of metabolic errors. Alzheimer’s disease (AD) is the most prevalent neurodegenerative disease of the elderly and is characterized by regional specificity of neural aberrations associated with higher cognitive functions. Aluminum (Al) is the most abundant neurotoxic metal on earth, widely bioavailable to humans and repeatedly shown to accumulate in AD-susceptible neuronal foci. In spite of this, the role of Al in AD has been heavily disputed based on the following claims: 1) bioavailable Al cannot enter the brain in sufficient amounts to cause damage, 2) excess Al is efficiently excreted from the body, and 3) Al accumulation in neurons is a consequence rather than a cause of neuronal loss. Research, however, reveals that: 1) very small amounts of Al are needed to produce neurotoxicity and this criterion is satisfied through dietary Al intake, 2) Al sequesters different transport mechanisms to actively traverse brain barriers, 3) incremental acquisition of small amounts of Al over a lifetime favors its selective accumulation in brain tissues, and 4) since 1911, experimental evidence has repeatedly demonstrated that chronic Al intoxication reproduces neuropathological hallmarks of AD. Misconceptions about Al bioavailability may have mislead scientists regarding the significance of Al in the pathogenesis of AD. The hypothesis that Al significantly contributes to AD is built upon very solid experimental evidence and should not be dismissed. Immediate steps should be taken to lessen human exposure to Al, which may be the single most aggravating and avoidable factor related to AD. http://content.iospress.com/articles/journal-of-alzheimers-disease/jad101494 2) Al sequesters different transport mechanisms to actively traverse brain barriers 3) incremental acquisition of small amounts of Al over a lifetime favors its selective accumulation in brain tissues 4) since 1911, experimental evidence has repeatedly demonstrated that chronic Al intoxication reproduces neuropathological hallmarks of AD.” Biomedical And Environmental Science • December 2011 Effect of aluminum hydroxide adjuvant on the immunogenicity of the 2009 pandemic influenza A/H1N1 vaccine: multi-level modeling of data with repeated measures Author information Yin da P1, Zhu BP, Wang HQ, Cao L, Wu WD, Jiang KY, Xia W, Zhang GM, Zheng JS, Cao LS, Liang XF. Chinese Center for Disease Control and Prevention Beijing 100050, China Abstract OBJECTIVE To evaluate the effect of the aluminum hydroxide (Al-OH) adjuvant on the 2009 pandemic influenza A/H1N1 (pH1N1) vaccine. METHODS In a multicenter, double-blind, randomized, placebo-controlled trial, participants received two doses of split-virion formulation containing 15 μg hemagglutinin antigen, with or without aluminum hydroxide (Al-OH). We classified the participants into six age categories (>61 years, 41-60 years, 19-40 years, 13-18 years, 8-12 years, and 3-7 years) and obtained four blood samples from each participant on days 0, 21, 35, and 42 following the first dose of immunization. We assessed vaccine immunogenicity by measuring the geometric mean titer (GMT) of hemagglutination inhibiting antibody. We used a two-level model to evaluate the fixed effect of aluminum Al-OH and other factors, accounting for repeated measures. RESULTS The predictions of repeated measurement on GMTs of formulations with or without Al-OH, were 80.35 and 112.72, respectively. Al-OH significantly reduced immunogenicity after controlling for time post immunization, age-group and gender. CONCLUSION The Al-OH adjuvant does not increase but actually reduces the immunogenicity of the split-virion pH1N1 vaccine. http://www.ncbi.nlm.nih.gov/pubmed/?term=22365398 “The aluminum hydroxide adjuvant does not increase but actually reduces the immunogenicity of the split-virion pH1N1 vaccine.” Current Medicinal Chemistry • 2011 Aluminum Vaccine Adjuvants: Are they Safe? L. Tomljenovic*,1 and C.A. Shaw2 Neural Dynamics Research Group Department of Ophthalmology and Visual Sciences University of British Columbia 828 W. 10th Ave, Vancouver, BC, V5Z 1L8, Canada 2Departments of Ophthalmology and Visual Sciences and Experimental Medicine and the Graduate Program in Neuroscience University of British Columbia, Vancouver, British Columbia 828 W. 10th Ave, Vancouver, BC, V5Z 1L8, Canada Abstract Aluminum is an experimentally demonstrated neurotoxin and the most commonly used vaccine adjuvant. Despite almost 90 years of widespread use of aluminum adjuvants, medical science’s understanding about their mechanisms of action is still remarkably poor. There is also a concerning scarcity of data on toxicology and pharmacokinetics of these compounds. In spite of this, the notion that aluminum in vaccines is safe appears to be widely accepted. Experimental research, however, clearly shows that aluminum adjuvants have a potential to induce serious immunological disorders in humans. In particular, aluminum in adjuvant form carries a risk for autoimmunity, long-term brain inflammation and associated neurological complications and may thus have profound and widespread adverse health consequences. In our opinion, the possibility that vaccine benefits may have been overrated and the risk of potential adverse effects underestimated, has not been rigorously evaluated in the medical and scientific community. We hope that the present paper will provide a framework for a much needed and long overdue assessment of this highly contentious medical issue. http://www.meerwetenoverfreek.nl/images/stories/Tomljenovic_Shaw-CMC-published.pdf “Experimental research, however, clearly shows that aluminum adjuvants have a potential to induce serious immunological disorders in humans. In particular, aluminum in adjuvant form carries a risk for autoimmunity, long-term brain inflammation and associated neurological complications and may thus have profound and widespread adverse health consequences. In our opinion, the possibility that vaccine benefits may have been overrated and the risk of potential adverse effects underestimated, has not been rigorously evaluated in the medical and scientific community.” Entropy • 2012 Special Issue Biosemiotic Entropy: Disorder, Disease, and Mortality Empirical Data Confirm Autism Symptoms Related to Aluminum and Acetaminophen Exposure “Using standard log-likelihood ratio techniques, we identify several signs and symptoms that are significantly more prevalent in vaccine reports after Author Information 2000, including cellulitis, seizure, depression, fatigue, Stephanie Seneff 1,* , Robert M. Davidson 2 and Jingjing Liu 1 pain and death, which are also significantly associated 1. Computer Science and Artificial Intelligence Laboratory Massachusetts Institute of Technology, Cambridge, MA 02139, USA with aluminum-containing vaccines. We propose that 2. Internal Medicine Group Practice PhyNet, Inc., Longview, TX 75604, USA children with the autism diagnosis are especially Abstract vulnerable to toxic metals such as aluminum and Autism is a condition characterized by impaired cognitive and social skills, associated with compromised immune function. The incidence is alarmingly on the rise, and environmental factors are increasingly suspected to play a role. This paper investigates word frequency patterns in the U.S. CDC Vaccine Adverse Events Reporting System (VAERS) database. Our results provide strong evidence supporting a link between autism and the aluminum in vaccines. A literature review showing toxicity of aluminum in human physiology offers further support. Mentions of autism in VAERS increased steadily at the end of the last century, during a period when mercury was being phased out, while aluminum adjuvant burden was being increased. Using standard log-likelihood ratio techniques, we identify several signs and symptoms that are significantly more prevalent in vaccine reports after 2000, including cellulitis, seizure, depression, fatigue, pain and death, which are also significantly associated with aluminum-containing vaccines. We propose that children with the autism diagnosis are especially vulnerable to toxic metals such as aluminum and mercury due to insufficient serum sulfate and glutathione. A strong correlation between autism and the MMR (Measles, Mumps, Rubella) vaccine is also observed, which may be partially explained via an increased sensitivity to acetaminophen administered to control fever. http://www.mdpi.com/1099-4300/14/11/2227 mercury due to insufficient serum sulfate and glutathione. A strong correlation between autism and the MMR (Measles, Mumps, Rubella) vaccine is also observed, which may be partially explained via an increased sensitivity to acetaminophen administered to control fever.” Neurotoxicology And Teratology • January 2012 Multiple toxic heavy metals and neonatal neurobehavior in China require considering co-exposure to Thimerosal-ethylmercury and adjuvant-aluminum Author information Dórea JG. Faculty of Health Sciences Universidade de Brasilia 70919-970 Brasilia, DF, Brazil dorea@rudah.com.br https://www.infona.pl/resource/bwmeta1.element.elsevier-5ea9d498-e159-3496-99a1-2b3c4a568a20 Lupus • February 2012 Mechanisms of aluminum adjuvant toxicity and autoimmunity in pediatric populations Author information Tomljenovic L1, Shaw CA. Neural Dynamics Research Group Department of Ophthalmology and Visual Sciences University of British Columbia Vancouver, BC, Canada lucijat77@gmail.com Abstract Immune challenges during early development, including those vaccine-induced, can lead to permanent detrimental alterations of the brain and immune function. Experimental evidence also shows that simultaneous administration of as little as two to three immune adjuvants can overcome genetic resistance to autoimmunity. In some developed countries, by the time children are 4 to 6 years old, they will have received a total of 126 antigenic compounds along with high amounts of aluminum (Al) adjuvants through routine vaccinations. According to the US Food and Drug Administration, safety assessments for vaccines have often not included appropriate toxicity studies because vaccines have not been viewed as inherently toxic. Taken together, these observations raise plausible concerns about the overall safety of current childhood vaccination programs. When assessing adjuvant toxicity in children, several key points ought to be considered: (i) infants and children should not be viewed as “small adults” with regard to toxicological risk as their unique physiology makes them much more vulnerable to toxic insults; (ii) in adult humans Al vaccine adjuvants have been linked to a variety of serious autoimmune and inflammatory conditions (i.e., “ASIA”), yet children are regularly exposed to much higher amounts of Al from vaccines than adults; (iii) it is often assumed that peripheral immune responses do not affect brain function. However, it is now clearly established that there is a bidirectional neuro-immune cross-talk that plays crucial roles in immunoregulation as well as brain function. In turn, perturbations of the neuro-immune axis have been demonstrated in many autoimmune diseases encompassed in “ASIA” and are thought to be driven by a hyperactive immune response; and (iv) the same components of the neuro-immune axis that play key roles in brain development and immune function are heavily targeted by Al adjuvants. In summary, research evidence shows that increasing concerns about current vaccination practices may indeed be warranted. Because children may be most at risk of vaccine-induced complications, a rigorous evaluation of the vaccine-related adverse health impacts in the pediatric population is urgently needed. http://www.ncbi.nlm.nih.gov/pubmed/22235057 “Immune challenges during early development, including those vaccine-induced, can lead to permanent detrimental alterations of the brain and immune function. Experimental evidence also shows that simultaneous administration of as little as two to three immune adjuvants can overcome genetic resistance to autoimmunity. In some developed countries, by the time children are 4 to 6 years old, they will have received a total of 126 antigenic compounds along with high amounts of aluminum (Al) adjuvants through routine vaccinations. According to the US Food and Drug Administration, safety assessments for vaccines have often not included appropriate toxicity studies because vaccines have not been viewed as inherently toxic. Taken together, these observations raise plausible concerns about the overall safety of current childhood vaccination programs.” Immunology Letters • September 2012 Alum increases antigen uptake reduces antigen degradation and sustains antigen presentation by DCs in vitro Author information Ghimire TR1, Benson RA, Garside P, Brewer JM. Strathclyde Institute of Pharmacy and Biomedical Sciences University of Strathclyde, Glasgow, Scotland, United Kingdom Abstract Aluminium adjuvants (alum) have been the only widely approved adjuvants for use in human vaccines since the 1920s, however, the mechanism of action of these adjuvants remains elusive. Due to increasing demand for novel adjuvants, a clearer understanding of the mechanisms that allow these important agents to affect adaptive immune responses will make a significant contribution to the rational design of future vaccines. Using a novel approach to tracking antigen and antigen presentation, we demonstrate that alum induces higher antigen accumulation and increased antigen presentation by dendritic cells (DCs) in vitro. Antigen accumulation was 100-fold higher and antigen presentation 10-fold higher following alum treatment when compared with soluble protein alone. We also observed that alum causes an initial reduction in presentation compared with soluble antigen, but eventually increases the magnitude and duration of antigen presentation. This was associated with reduced protein degradation in DCs following alum treatment. These studies demonstrate the dynamic alterations in antigen processing and presentation induced by alum that underlie enhanced DC function in response to this adjuvant. http://www.ncbi.nlm.nih.gov/pubmed/?term=22732235 “Aluminium adjuvants (alum) have been the only widely approved adjuvants for use in human vaccines since the 1920s, however, the mechanism of action of these adjuvants remains elusive.” Coordination Chemistry Reviews • October 2012 Metal Ions in Neurodegenerative Diseases The coordination chemistry of aluminium in neurodegenerative disease by Christopher Exley Abstract The coordination chemistry of a metal ion defines its optimal association with a biomolecule such that its binding by specific ligands on that molecule confers function and biological purpose. Aluminium is a non-essential metal with no known biological role which means that its coordination neurochemistry defines aluminium’s putative role in a number of neurodegenerative diseases. In examining this chemistry it is found that very little is known about the complexes formed and ligands involved in aluminium’s interactions with neurochemically-relevant ligands. Aluminium’s action as a pro-oxidant as well as an excitotoxin are highlighted while the evidence for its interactions with amyloid beta, tau and DNA are discussed and it is concluded that it is too early to discount these ligands as targets for the neurotoxicity of aluminium. Highlights • There are few quantitaive data describing the coordination chemistry of aluminium in neurodegenerative disease. • One compelling line of evidence relates to the putative aluminium superoxide semi-reduced radical ion AlO22+ and its powerful action as a pro-oxidant. • Another important candidate is aluminium’s complex with ATP and its potential to disrupt neuronal signalling and induce excitotoxicity. • Though there are no quantitative data to describe aluminium’s interactions with amyloid beta this does not preclude their association in the brain. • The biological reactivity of aluminium supports myriad as yet unidentified interactions with biomolecules associated with brain function in health and disease. http://www.sciencedirect.com/science/article/pii/S0010854512000392 “In examining this chemistry it is found that very little is known about the complexes formed and ligands involved in aluminium’s interactions with neurochemically-relevant ligands. Aluminium’s action as a pro-oxidant as well as an excitotoxin are highlighted while the evidence for its interactions with amyloid beta, tau and DNA are discussed and it is concluded that it is too early to discount these ligands as targets for the neurotoxicity of aluminium.” Journal Of Trace Elements In Medicine And Biology • October 2012 Aluminium overload after 5 years in skin biopsy following post-vaccination with subcutaneous pseudolymphoma Author information Guillard O1, Fauconneau B, Pineau A, Marrauld A, Bellocq JP, Chenard MP. CHU Poitiers, Department of Biochemistry Poitiers, France olivier.guillard@univ-poitiers.fr Abstract Aluminium hydroxide is used as an effective adjuvant in a wide range of vaccines for enhancing immune response to the antigen. The pathogenic role of aluminium hydroxide is now recognized by the presence of chronic fatigue syndrome, macrophagic myofasciitis and subcutaneous pseudolymphoma, linked to intramuscular injection of aluminium hydroxide-containing vaccines. The aim of this study is to verify if the subcutaneous pseudolymphoma observed in this patient in the site of vaccine injection is linked to an aluminium overload. Many years after vaccination, a subcutaneous nodule was discovered in a 45-year-old woman with subcutaneous pseudolymphoma. In skin biopsy at the injection site for vaccines, aluminium (Al) deposits are assessed by Morin stain and quantification of Al is performed by Zeeman Electrothermal Atomic Absorption Spectrophotometry. Morin stain shows Al deposits in the macrophages, and Al assays (in μg/g, dry weight) were 768.10±18 for the patient compared with the two control patients, 5.61±0.59 and 9.13±0.057. Given the pathology of this patient and the high Al concentration in skin biopsy, the authors wish to draw attention when using the Al salts known to be particularly effective as adjuvants in single or repeated vaccinations. The possible release of Al may induce other pathologies ascribed to the well-known toxicity of this metal. http://www.ncbi.nlm.nih.gov/pubmed/22425036 “The pathogenic role of aluminium hydroxide is now recognized by the presence of chronic fatigue syndrome, macrophagic myofasciitis and subcutaneous pseudolymphoma, linked to intramuscular injection of aluminium hydroxide-containing vaccines.” Current Aging Science • December 2012 Aluminum excytotoxicity and neuroautotoimmunity: the role of the brain expression of CD32+ (FcyRIIa), ICAM-1+ and CD3E in aging Author information Jovanova-Nesic K1, Shoenfeld Y, Spector NH. Immunology Research Center Branislav Jankovic Department of Neuroimmunology, Institute of Virology Vaccines and Sera-Torlak, Belgrade, Serbia Abstract In the central nervous system (CNS) microglia are crucial for the defense of the brain against invading microorganisms, formation of tumors, and damage following trauma. However, uncontrolled activation of these cells may have deleterious outcomes through activation of Fcy and the complement 3 receptors and the induction of an adaptive immune reaction. Proteins contributing to this reaction are the intercellular adhesion molecule-1 (ICAM-1) and CD3 molecules, among others. Both can be expressed on the glia cells before cytokine release and may facilitate an autoimmune inflammatory reaction in the brain. Round microglial cells among the pyramidal cells of the hippocampus with increased expression of CD32+ (FcyIIa) and near the site of injection of aluminum were detected immunohistochemically and indicate microglial activation at the site of aluminum injury. ICAM-1+ immunoreactivity significantly increased in the hippocampus and in the choroids plexus, indicating increased inflammation in the brain as well as increased CD3E+ expression in the hippocampus and non-MHC-restricted T cytotoxicity after aluminum injection. The pattern of expression of CD32+ (FcyIIa receptor) near the site of aluminum injection indicates that microglia may play a phagocytic role at the site of aluminum-induced excitotoxicity in the brain. Significant expression of ICAM-1+ and CD3E+ immunoreactive cells with the clusters of ICAM-1+ in the choroid plexus suggests a consequently neurotoxic autoimmune reaction induced by microglial hyperactivation in the injured brain. http://www.ncbi.nlm.nih.gov/pubmed/23387884 “In the central nervous system (CNS) microglia are crucial for the defense of the brain against invading microorganisms, formation of tumors, and damage following trauma. However, uncontrolled activation of these cells may have deleterious outcomes ...” “alum has high neurotoxic potential and planning administration of continuously escalating doses of this poorly biodegradable adjuvant in the population should be carefully evaluated by regulatory agencies since the compound may be insidiously unsafe.” BMC Medicine • April 2013 Slow CCL2-dependent translocation of biopersistent particles from muscle to brain Author information Khan Z1, Combadière C, Authier FJ, Itier V, Lux F, Exley C, Mahrouf-Yorgov M, Decrouy X, Moretto P, Tillement O, Gherardi RK, Cadusseau J. INSERM, U955, 8 rue du Général Sarrail, Créteil, 94010, France Abstract BACKGROUND Long-term biodistribution of nanomaterials used in medicine is largely unknown. This is the case for alum, the most widely used vaccine adjuvant, which is a nanocrystalline compound spontaneously forming micron/submicron-sized agglomerates. Although generally well tolerated, alum is occasionally detected within monocyte-lineage cells long after immunization in presumably susceptible individuals with systemic/neurologic manifestations or autoimmune (inflammatory) syndrome induced by adjuvants (ASIA). METHODS On the grounds of preliminary investigations in 252 patients with alum-associated ASIA showing both a selective increase of circulating CCL2, the major monocyte chemoattractant, and a variation in the CCL2 gene, we designed mouse experiments to assess biodistribution of vaccine-derived aluminum and of alum-particle fluorescent surrogates injected in muscle. Aluminum was detected in tissues by Morin stain and particle induced Xray emission) (PIXE) Both 500 nm fluorescent latex beads and vaccine alum agglomerates-sized nanohybrids (Al-Rho) were used. RESULTS Intramuscular injection of alum-containing vaccine was associated with the appearance of aluminum deposits in distant organs, such as spleen and brain where they were still detected one year after injection. Both fluorescent materials injected into muscle translocated to draining lymph nodes (DLNs) and thereafter were detected associated with phagocytes in blood and spleen. Particles linearly accumulated in the brain up to the six-month endpoint; they were first found in perivascular CD11b+ cells and then in microglia and other neural cells. DLN ablation dramatically reduced the biodistribution. Cerebral translocation was not observed after direct intravenous injection, but significantly increased in mice with chronically altered blood-brain-barrier. Loss/gain-of-function experiments consistently implicated CCL2 in systemic diffusion of Al-Rho particles captured by monocyte-lineage cells and in their subsequent neurodelivery. Stereotactic particle injection pointed out brain retention as a factor of progressive particle accumulation. CONCLUSION Nanomaterials can be transported by monocyte-lineage cells to DLNs, blood and spleen, and, similarly to HIV, may use CCL2-dependent mechanisms to penetrate the brain. This occurs at a very low rate in normal conditions explaining good overall tolerance of alum despite its strong neurotoxic potential. However, continuously escalating doses of this poorly biodegradable adjuvant in the population may become insidiously unsafe, especially in the case of overimmunization or immature/altered blood brain barrier or high constitutive CCL-2 production. Full Report: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3616851/ “... a form of the autoimmune/autoinflammatory syndrome induced by adjuvants (ASIA syndrome) in commercial sheep, linked to the repetitive inoculation of aluminum-containing adjuvants through vaccination. The syndrome shows an acute phase that affects less than 0.5% of animals in a given herd ...” [a syndrome that affects 5,000 individuals per each 1 million] Immunology Research • July 2013 Autoimmune/autoinflammatory syndrome induced by adjuvants (ASIA syndrome) in commercial sheep Author information Luján L1, Pérez M, Salazar E, Álvarez N, Gimeno M, Pinczowski P, Irusta S, Santamaría J, Insausti N, Cortés Y, Figueras L, Cuartielles I, Vila M, Fantova E, Chapullé JL. Department of Animal Pathology Veterinary Faculty, University of Zaragoza 177 Miguel Servet Street, 50013, Saragossa, Spain Lluis.Lujan@unizar.es Abstract We describe a form of the autoimmune/autoinflammatory syndrome induced by adjuvants (ASIA syndrome) in commercial sheep, linked to the repetitive inoculation of aluminum-containing adjuvants through vaccination. The syndrome shows an acute phase that affects less than 0.5% of animals in a given herd, it appears 2-6 days after an adjuvant-containing inoculation and it is characterized by an acute neurological episode with low response to external stimuli and acute meningoencephalitis, most animals apparently recovering afterward. The chronic phase is seen in a higher proportion of flocks, it can follow the acute phase, and it is triggered by external stimuli, mostly low temperatures. The chronic phase begins with an excitatory phase, followed by weakness, extreme cachexia, tetraplegia and death. Gross lesions are related to a cachectic process with muscular atrophy, and microscopic lesions are mostly linked to a neurodegenerative process in both dorsal and ventral column of the gray matter of the spinal cord. Experimental reproduction of ovine ASIA in a small group of repeatedly vaccinated animals was successful. Detection of Al(III) in tissues indicated the presence of aluminum in the nervous tissue of experimental animals. The present report is the first description of a new sheep syndrome (ovine ASIA syndrome) linked to multiple, repetitive vaccination and that can have devastating consequences as it happened after the compulsory vaccination against bluetongue in 2008. The ovine ASIA syndrome can be used as a model of other similar diseases affecting both human and animals. A major research effort is needed in order to understand its complex pathogenesis. http://www.ncbi.nlm.nih.gov/pubmed/?term=23579772 Immunology Research • July 2013 Aluminum in the central nervous system (CNS): toxicity in humans and animals, vaccine adjuvants, and autoimmunity Author information Shaw CA1, Tomljenovic L. Neural Dynamics Research Group Department of Ophthalmology and Visual Sciences University of British Columbia (UBC) 828 W. 10th Ave., Vancouver, BC V5Z 1L8, Canada cashawlab@gmail.com Abstract We have examined the neurotoxicity of aluminum in humans and animals under various conditions, following different routes of administration, and provide an overview of the various associated disease states. The literature demonstrates clearly negative impacts of aluminum on the nervous system across the age span. In adults, aluminum exposure can lead to apparently agerelated neurological deficits resembling Alzheimer’s and has been linked to this disease and to the Guamanian variant, ALS-PDC. Similar outcomes have been found in animal models. In addition, injection of aluminum adjuvants in an attempt to model Gulf War syndrome and associated neurological deficits leads to an ALS phenotype in young male mice. In young children, a highly significant correlation exists between the number of pediatric aluminum-adjuvanted vaccines administered and the rate of autism spectrum disorders. Many of the features of aluminum-induced neurotoxicity may arise, in part, from autoimmune reactions, as part of the ASIA syndrome. http://www.ncbi.nlm.nih.gov/pubmed/23609067 “In young children, a highly significant correlation exists between the number of pediatric aluminum-adjuvanted vaccines administered and the rate of autism spectrum disorders. Many of the features of aluminum-induced neurotoxicity may arise, in part, from autoimmune reactions, as part of the ASIA syndrome.” Journal Of Inorganic Biochemistry • September 2013 Selective accumulation of aluminum in cerebral arteries in Alzheimer’s disease (AD) Author information Bhattacharjee S1, Zhao Y, Hill JM, Culicchia F, Kruck TP, Percy ME, Pogue AI, Walton JR, Lukiw WJ. Neuroscience Center Louisiana State University Health Sciences Center New Orleans, LA 70112, USA Abstract Once biologically available aluminum bypasses gastrointestinal and blood-brain barriers, this environmentally-abundant neurotoxin has an exceedingly high affinity for the large pyramidal neurons of the human brain hippocampus. This same anatomical region of the brain is also targeted by the earliest evidence of Alzheimer’s disease (AD) neuropathology. The mechanism for the selective targeting and transport of aluminum into the hippocampus of the human brain is not well understood. In an effort to improve our understanding of a pathological aluminum entry system into the brain, this study examined the aluminum content of 8 arteries that supply blood to the hippocampus, including the aorta and several cerebral arteries. In contrast to age-matched controls, in AD patients we found a gradient of increasing aluminum concentration from the aorta to the posterior cerebral artery that supplies blood to the hippocampus. Primary cultures of human brain endothelial cells were found to have an extremely high affinity for aluminum when compared to other types of brain cells. Together, these results suggest for the first time that endothelial cells that line the cerebral vasculature may have biochemical attributes conducive to binding and targeting aluminum to selective anatomical regions of the brain, such as the hippocampus, with potential downstream pro-inflammatory and pathogenic consequences. http://www.ncbi.nlm.nih.gov/pubmed/23764827 “Once biologically available aluminum bypasses gastrointestinal and blood-brain barriers, this environmentally-abundant neurotoxin has an exceedingly high affinity for the large pyramidal neurons of the human brain hippocampus. This same anatomical region of the brain is also targeted by the earliest evidence of Alzheimer’s disease (AD) neuropathology. The mechanism for the selective targeting and transport of aluminum into the hippocampus of the human brain is not well understood.” “All 30 infant formulas were contaminated with aluminium.” BMC Pediatrics • October 2013 The aluminium content of infant formulas remains too high Author information Chuchu N1, Patel B, Sebastian B, Exley C. The Birchall Centre, Lennard-Jones Laboratories Keele University, Staffordshire, UK c.exley@keele.ac.uk Abstract BACKGROUND Recent research published in this journal highlighted the issue of the high content of aluminium in infant formulas. The expectation was that the findings would serve as a catalyst for manufacturers to address a significant problem of these, often necessary, components of infant nutrition. It is critically important that parents and other users have confidence in the safety of infant formulas and that they have reliable information to use in choosing a product with a lower content of aluminium. Herein, we have significantly extended the scope of the previous research and the aluminium content of 30 of the most widely available and often used infant formulas has been measured. METHODS Both ready-to-drink milks and milk powders were subjected to microwave digestion in the presence of 15.8 M HNO3 and 30% w/v H2O2 and the aluminium content of the digests was measured by TH GFAAS. RESULTS Both ready-to-drink milks and milk powders were contaminated with aluminium. The concentration of aluminium across all milk products ranged from ca 100 to 430 μg/L. The concentration of aluminium in two soya-based milk products was 656 and 756 μg/L. The intake of aluminium from non-soya-based infant formulas varied from ca 100 to 300 μg per day. For soya-based milks it could be as high as 700 μg per day. CONCLUSIONS All 30 infant formulas were contaminated with aluminium. There was no clear evidence that subsequent to the problem of aluminium being highlighted in a previous publication in this journal that contamination had been addressed and reduced. It is the opinion of the authors that regulatory and other non-voluntary methods are now required to reduce the aluminium content of infant formulas and thereby protect infants from chronic exposure to dietary aluminium. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3851493/ “... aluminum has the potential to induce damage at a range of levels in the Central Nervous System leading to neuronal death, circuit malfunction, and ultimately system failure.” Immunome Research • October 2013 Aluminums Role in CNS-immune System Interactions leading to Neurological Disorders Shaw CA1,2,3*, Kette SD4, Davidson RM5 and Seneff S6 1. Neural Dynamics Research Group, Department of Ophthalmology and Visual Sciences 828 W. 10th Ave., Vancouver, British Columbia, V5Z1L8, Canada 2. Program Experimental Medicine, University of British Columbia, Vancouver, V5Z1L8, Canada 3. Program in Neurosciences, University of British Columbia, Vancouver, V5Z1L8, Canada 4. Independent researcher, Hudson, FL 34667, USA 5.Internal Medicine Group Practice, PhyNet, Inc., 4002 Technology Center, Longview, TX 75605, USA 6. MIT Computer Science and Artificial Intelligence Laboratory, 32 Vassar Street, Cambridge, MA 02139, USA Abstract Multisystem interactions are well established in neurological disorders, in spite of conventional views that only the central nervous system (CNS) is impacted. We review evidence for mutual interactions between the immune and nervous systems and show how these seem to be implicated in the origin and progression of nervous system disorders. Well-established immune system triggers leading to autoimmune reactions are considered. Of these, aluminum, a known neurotoxicant, may be of particular importance. We have demonstrated elsewhere that aluminum has the potential to induce damage at a range of levels in the CNS leading to neuronal death, circuit malfunction, and ultimately system failure. Aluminum is widely used as an adjuvant in various vaccine formulations and has been implicated in a multisystem disorder termed autoimmune/inflammatory syndrome induced by adjuvants (ASIA). The implications of aluminum-induced ASIA in some disorders of the CNS are considered. We propose a unified theory capturing a progression from a local response to a systemic response initiated by disruption of water-based interfaces of exposed cells. http://www.omicsonline.com/open-access/aluminums-role-in-cnsimmune-system-interactions-leading-to-neurological-disorders-14822-1745-7580-9-069.php?aid=20403 Environmental Science • Processes And Impacts • October 2013 Human exposure to aluminium Author information Christopher Exley The Birchall Centre Lennard-Jones Laboratories Keele University, Staffordshire, UK c.exley@keele.ac.uk Abstract Human activities have circumvented the efficient geochemical cycling of aluminium within the lithosphere and therewith opened a door, which was previously only ajar, onto the biotic cycle to instigate and promote the accumulation of aluminium in biota and especially humans. Neither these relatively recent activities nor the entry of aluminium into the living cycle are showing any signs of abating and it is thus now imperative that we understand as fully as possible how humans are exposed to aluminium and the future consequences of a burgeoning exposure and body burden. The aluminium age is upon us and there is now an urgent need to understand how to live safely and effectively with aluminium. http://www.ncbi.nlm.nih.gov/pubmed/23982047 “The aluminium age is upon us and there is now an urgent need to understand how to live safely and effectively with aluminium.” Communications In Integrated Biology • November 2013 Aluminum and the human diet revisited Christopher A Shaw and Thomas E Marler Abstract Concerns about aluminum (Al) exposure in the human diet have persisted for one century. We suggest that continued research would benefit from better reporting of environmental factors that are known to influence Al accumulation in plant organs that are consumed, focusing on subsets of the general public that exhibit the highest risk for neuropathological responses, increased evaluation of commercial processing procedures that may concentrate Al or other toxic substances, and designing studies with low dose, chronic exposure rather than further study of acute, brief exposure. Neurological Disorders Cognitive decline and central nervous system (CNS) pathologies that resemble those of Alzheimer are induced by Al in older rats.20 Soil and water sources of Al were implicated in the ALS-parkinsonism dementia complex on Guam.21 Additionally, the acute effects of higher doses of Al-induced dialysis associated encephalopathy in humans are well documented.22 The route of administration of Al plays a key role in the type of neurotoxicity exhibited. While most dietary Al is removed by the kidneys, those lacking mature or patent kidney function such as pediatric and geriatric subjects may be more likely to accumulate Al in different organs, including the CNS. Injected Al from Al adjuvants in vaccines have a very different fate and appear to be picked up from the draining lymph nodes by circulating macrophages and transported into the CNS.23 Motor neuron loss following Al hydroxide injections in mice and sheep24-26 and macrophagic myofasciitis in humans involving cognitive dysfunction in humans.27 Al adjuvants have also been linked to a series of autoimmune disorders in humans.28 Developmental neurological disorders such as autism spectrum disorder (ASD) also have a potential Al link through the accumulative weight of pediatric vaccines, many of which contain Al as adjuvants.29 Indeed, there is a highly significant correlation between ASD rates and cumulative Al adjuvant amount,30 a correlation that satisfies eight of nine Hill criteria for causality. Similar outcomes are found in new born mice injected with Al adjuvants.31 A recent review also links Al to ASD.32 http://www.ncbi.nlm.nih.gov/pubmed/24505503 “Developmental neurological disorders such as autism spectrum disorder (ASD) also have a potential Aluminum link through the accumulative weight of pediatric vaccines, many of which contain Aluminum as adjuvants.” Journal Of Inorganic Biochemistry • November 2013 Administration of aluminium to neonatal mice in vaccine-relevant amounts is associated with adverse long term neurological outcomes Author information Shaw CA1, Li Y, Tomljenovic L. Dept. of Ophthalmology and Visual Sciences University of British Columbia, Vancouver, British Columbia, Canada Program in Experimental Medicine University of British Columbia, Vancouver, British Columbia, Canada Program in Neuroscience University of British Columbia, Vancouver, British Columbia, Canada cashawlab@gmail.com Abstract Our previous ecological studies of autism spectrum disorder (ASD) has demonstrated a correlation between increasing ASD rates and aluminium (Al) adjuvants in common use in paediatric vaccines in several Western countries. The correlation between ASD rate and Al adjuvant amounts appears to be dose-dependent and satisfies 8 of 9 Hill criteria for causality. We have now sought to provide an animal model to explore potential behavioural phenotypes and central nervous system (CNS) alterations using s.c. injections of Al hydroxide in early postnatal CD-1 mice of both sexes. Injections of a “high” and “low” Al adjuvant levels were designed to correlate to either the U.S. or Scandinavian paediatric vaccine schedules vs. control saline-injected mice. Both male and female mice in the “high Al” group showed significant weight gains following treatment up to sacrifice at 6 months of age. Male mice in the “high Al” group showed significant changes in light-dark box tests and in various measures of behaviour in an open field. Female mice showed significant changes in the light-dark box at both doses, but no significant changes in open field behaviours. These current data implicate Al injected in early postnatal life in some CNS alterations that may be relevant for a better understanding of the aetiology of ASD. http://www.ncbi.nlm.nih.gov/pubmed/23932735 “Our previous ecological studies of autism spectrum disorder (ASD) has demonstrated a correlation between increasing Autism Spectrum Disorder rates and aluminium (Al) adjuvants in common use in paediatric vaccines in several Western countries.” Journal Of Inorganic Biochemistry • November 2013 Aluminium based adjuvants and their effects on mitochondria and lysosomes of phagocytosing cells Author information Ohlsson L1, Exley C, Darabi A, Sandén E, Siesjö P, Eriksson H. Department of Biomedical Laboratory Science Faculty of Health and Society Malmö University SE-205 06 Malmö, Sweden Abstract Aluminium oxyhydroxide, Al(OH)3 is one of few compounds approved as an adjuvant in human vaccines. However, the mechanism behind its immune stimulating properties is still poorly understood. In vitro co-culture of an aluminium adjuvant and the human monocytic cell line THP-1 resulted in reduced cell proliferation. Inhibition occurred at concentrations of adjuvant several times lower than would be found at the injection site using a vaccine formulation containing an aluminium adjuvant. Based on evaluation of the mitochondrial membrane potential, THP-1 cells showed no mitochondrial rupture after co-culture with the aluminium adjuvant, instead an increase in mitochondrial activity was seen. The THP-1 cells are phagocytosing cells and after co-culture with the aluminium adjuvant the phagosomal pathway was obstructed. Primary or early phagosomes mature into phagolysosomes with an internal pH of 4.5 - 5 and carry a wide variety of hydrolysing enzymes. Coculture with the aluminium adjuvant yielded a reduced level of acidic vesicles and cathepsin L activity, a proteolytic enzyme of the phagolysosomes, was almost completely inhibited. THP-1 cells are an appropriate in vitro model in order to investigate the mechanism behind the induction of a phagocytosing antigen presenting cell into an inflammatory cell by aluminium adjuvants. Much information will be gained by investigating the phagosomal pathway and what occurs inside the phagosomes and to elucidate the ultimate fate of phagocytosed aluminium particles. http://www.ncbi.nlm.nih.gov/pubmed/23992993 “Much information will be gained by investigating the phagosomal pathway and what occurs inside the phagosomes and to elucidate the ultimate fate of phagocytosed aluminium particles.” Journal Of Inorganic Biochemistry • November 2013 Aluminium and breast cancer: Sources of exposure, tissue measurements and mechanisms of toxicological actions on breast biology Author information Darbre PD1, Mannello F, Exley C. School of Biological Sciences, University of Reading Reading RG6 6UB, UK p.d.darbre@reading.ac.uk Abstract This review examines recent evidence linking exposure to aluminium with the aetiology of breast cancer. The human population is exposed to aluminium throughout daily life including through diet, application of antiperspirants, use of antacids and vaccination. Aluminium has now been measured in a range of human breast structures at higher levels than in blood serum and experimental evidence suggests that the tissue concentrations measured have the potential to adversely influence breast epithelial cells including generation of genomic instability, induction of anchorage-independent proliferation and interference in oestrogen action. The presence of aluminium in the human breast may also alter the breast microenvironment causing disruption to iron metabolism, oxidative damage to cellular components, inflammatory responses and alterations to the motility of cells. The main research need is now to investigate whether the concentrations of aluminium measured in the human breast can lead in vivo to any of the effects observed in cells in vitro and this would be aided by the identification of biomarkers specific for aluminium action. http://www.ncbi.nlm.nih.gov/pubmed/23899626 “Aluminium has now been measured in a range of human breast structures at higher levels than in blood serum and experimental evidence suggests that the tissue concentrations measured have the potential to adversely influence breast epithelial cells including generation of genomic instability, induction of anchorage-independent proliferation and interference in oestrogen action.” Immunome Research • 2013 Aluminum’s Role in CNS-immune System Interactions leading to Neurological Disorders Shaw CA1,2,3*, Kette SD4, Davidson RM5 and Seneff S6 1. Neural Dynamics Research Group, Department of Ophthalmology and Visual Sciences 828 W. 10th Ave., Vancouver, British Columbia, V5Z1L8, Canada 2. Program Experimental Medicine, University of British Columbia, Vancouver, V5Z1L8, Canada 3. Program in Neurosciences, University of British Columbia, Vancouver, V5Z1L8, Canada 4. Independent researcher, Hudson, FL 34667, USA 5. Internal Medicine Group Practice, PhyNet, Inc., 4002 Technology Center, Longview, TX 75605, USA 6. MIT Computer Science and Arti cial Intelligence Laboratory, 32 Vassar Street, Cambridge, MA 02139, USA Abstract Multisystem interactions are well established in neurological disorders, in spite of conventional views that only the central nervous system (CNS) is impacted. We review evidence for mutual interactions between the immune and nervous systems and show how these seem to be implicated in the origin and progression of nervous system disorders. Well-established immune system triggers leading to autoimmune reactions are considered. Of these, aluminum, a known neurotoxicant, may be of particular importance. We have demonstrated elsewhere that aluminum has the potential to induce damage at a range of levels in the CNS leading to neuronal death, circuit malfunction and ultimately, system failure. Aluminum is widely used as an adjuvant in various vaccine formulations and has been implicated in a multisystem disorder termed “autoimmune/inflammatory syndrome induced by adjuvants” (ASIA). The implications of aluminum-induced ASIA in some disorders of the CNS are considered. We propose a unified theory capturing a progression from a local response to a systemic response initiated by disruption of water-based interfaces of exposed cells. https://people.csail.mit.edu/seneff/Shaw_et_al_Immunome_Res_2013.pdf “The implications of aluminum-induced ASIA in some disorders of the Central Nervous System are considered.” “Unfortunately, despite its favorable safety profile, aluminum hydroxide can only weakly or moderately potentiate antigen-specific antibody responses. Simply reducing the particle size of the traditional aluminum hydroxide adjuvant into nanometers represents a novel and effective approach to improve its adjuvanticity.” Journal Of Controlled Release • January 2014 Aluminum hydroxide nanoparticles show a stronger vaccine adjuvant activity than traditional aluminum hydroxide microparticles Author information Li X, Aldayel AM, Cui Z. The University of Texas at Austin College of Pharmacy, Pharmaceutics Division Austin, TX 78712, USA Abstract Aluminum hydroxide is used as a vaccine adjuvant in various human vaccines. Unfortunately, despite its favorable safety profile, aluminum hydroxide can only weakly or moderately potentiate antigen-specific antibody responses. When dispersed in an aqueous solution, aluminum hydroxide forms particulates of 1-20μm. There is increasing evidence that nanoparticles around or less than 200nm as vaccine or antigen carriers have a more potent adjuvant activity than large microparticles. In the present study, we synthesized aluminum hydroxide nanoparticles of 112nm. Using ovalbumin and Bacillus anthracis protective antigen protein as model antigens, we showed that protein antigens adsorbed on the aluminum hydroxide nanoparticles induced a stronger antigen-specific antibody response than the same protein antigens adsorbed on the traditional aluminum hydroxide microparticles of around 9.3μm. The potent adjuvant activity of the aluminum hydroxide nanoparticles was likely related to their ability to more effectively facilitate the uptake of the antigens adsorbed on them by antigen-presenting cells. Finally, the local inflammation induced by aluminum hydroxide nanoparticles in the injection sites was milder than that induced by microparticles. Simply reducing the particle size of the traditional aluminum hydroxide adjuvant into nanometers represents a novel and effective approach to improve its adjuvanticity. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3918952/ Bulletin de l’Academie Nationale de Medecine • January 2014 Biopersistence and systemic distribution of intramuscularly injected particles: what impact on long-term tolerability of alum adjuvants? Gherardi RK, Cadusseau J, Authier FJ. Abstract Aluminium oxyhydroxide (alum), a nanocrystalline compound that forms agglomerates, has been widely used as a vaccine adjuvant since 1927, but the mechanisms by which it stimulates immune responses remain poorly understood. Although generally well tolerated, alum may occasionally cause chronic health problems in presumably susceptible individuals. Some individuals may rarely develop delayed-onset diffuse myalgia, chronic exhaustion and cognitive dysfunction, associated with long-term persistence (up to 12 years) of alumloaded macrophages at site of i.m. immunization, defining so-called macrophagic myofasciitis (MMF). Symptoms are consistent with the chronic fatigue/myalgic encephalomyelitis (CFS/ME) syndrome, and have been used as a paradigm of the “autoimmune/inflammatory syndrome induced by adjuvants” (ASIA). Cognitive dysfunction is reminiscent of that described in workers exposed to inhaled Al particles. Individual susceptibility may influence both alum biopersistence and difusion away from injection sites. Biopersistent particles such as fluorescent alum-coated nanohybrids, when injected into mouse muscle, are captured by monocyte-lineage cells and then carried to distant organs, draining lymph nodes and blood, probably via the thoracic duct, with delayed and accumulative translocation to the brain (microglial cells). Brain penetration occurs at extremely low levels in normal conditions, possibly explaining the good tolerance of alum despite its high neurotoxic potential. However, systemic diffusion is considerably enhanced by the potentiating effect of MCP-1, the main monocyte chemoattractant factor, the production of which is subject to marked variations linked to age and to genetic and environmental factors. Selective MCP-1 elevation is the only known circulating biomarker of MMF. http://www.ncbi.nlm.nih.gov/pubmed/26259285 “Biopersistent particles such as fluorescent alum-coated nanohybrids, when injected into mouse muscle, are captured by monocyte-lineage cells and then carried to distant organs, draining lymph nodes and blood, probably via the thoracic duct, with delayed and accumulative translocation to the brain (microglial cells). Brain penetration occurs at extremely low levels in normal conditions, possibly explaining the good tolerance of alum despite its high neurotoxic potential.” Clinical And Experimental Immunology • January 2014 Effects of adjuvants for human use in systemic lupus erythematosus (SLE)-prone (New Zealand black/New Zealand white) F1 mice Author information Favoino E1, Favia EI, Digiglio L, Racanelli V, Shoenfeld Y, Perosa F. Department of Internal Medicine (DIMO) Rheumatologic and Systemic Autoimmune Diseases and Internal Medicine Section University of Bari Medical School, Bari, Italy Abstract The safety of four different adjuvants was assessed in lupus-prone New Zealand black/New Zealand white (BW)F1 mice. Four groups of mice were injected intraperitoneally with incomplete Freund’s adjuvant (IFA), complete Freund’s adjuvant (CFA), squalene (SQU) or aluminium hydroxide (ALU). An additional group received plain phosphate-buffered saline (PBS) (UNT group). Mice were primed at week 9 and boosted every other week up to week 15. Proteinuria became detectable at weeks 17 (IFA group), 24 (CFA group), 28 (SQU and ALU groups) and 32 (UNT group). Different mean values were obtained among the groups from weeks 17 to 21 [week 17: one-way analysis of variance (anova) P = 0·016; weeks 18 and 19: P = 0·048; weeks 20 and 21: P = 0·013] being higher in the IFA group than the others [Tukey’s honestly significant difference (HSD) post-test P < 0·05]. No differences in anti-DNA antibody levels were observed among groups. Anti-RNP/Sm antibody developed at week 19 in only one CFA-treated mouse. Mean mouse weight at week 18 was lower in the ALU group than the IFA (Tukey’s HSD post-test P = 0·04), CFA (P = 0·01) and SQU (P < 0·0001) groups, while the mean weight in the SQU group was higher than in the IFA (P = 0·009), CFA (P = 0·013) and UNT (P = 0·005) groups. The ALU group weight decreased by almost half between weeks 29 and 31, indicating some toxic effect of ALU in the late post-immunization period. Thus, SQU was the least toxic adjuvant as it did not (i) accelerate proteinuria onset compared to IFA; (ii) induce toxicity compared to ALU or (iii) elicit anti-RNP/ Sm autoantibody, as occurred in the CFA group. http://www.ncbi.nlm.nih.gov/pubmed/24112107 “The aluminum group weight decreased by almost half between weeks 29 and 31, indicating some toxic effect of aluminum in the late post-immunization period.” Allergy, Asthma & Clinical Immunology • January 2014 Aluminium adjuvants and adverse events in sub-cutaneous allergy immunotherapy Christopher Exley The Birchall Centre Lennard-Jones Laboratories Keele University, Staffordshire, UK c.exley@keele.ac.uk Abstract Sub-cutaneous immunotherapy is an effective treatment for allergy. It works by helping to modify or re-balance an individual’s immune response to allergens and its efficacy is greatly improved by the use of adjuvants, most commonly, aluminium hydroxide. Aluminium salts have been used in allergy therapy for many decades and are assumed to be safe with few established side-effects. This assumption belies their potency as adjuvants and their potential for biological reactivity both at injection sites and elsewhere in the body. There are very few data purporting to the safety of aluminium adjuvants in allergy immunotherapy and particularly so in relation to longer term health effects. There are, if only few, published reports of adverse events following allergy immunotherapy and aluminium adjuvants are the prime suspects in the majority of such incidents. Aluminium adjuvants are clearly capable of initiating unwanted side effects in recipients of immunotherapy and while there is as yet no evidence that such are commonplace it is complacent to consider aluminium salts as harmless constituents of allergy therapies. Future research should establish the safety of the use of aluminium adjuvants in sub-cutaneous allergy immunotherapy. http://www.aacijournal.com/content/10/1/4 “Aluminium salts have been used in allergy therapy for many decades and are assumed to be safe with few established side-effects. This assumption belies their potency as adjuvants and their potential for biological reactivity both at injection sites and elsewhere in the body.” Computational and Structural Biotechnology Journal • March 2014 Aluminium in Biological Environments: A Computational Approach Author Information Jon I Mujika,a Elixabete Rezabal,b Jose M Mercero,a Fernando Ruipérez,c Dominique Costa,d Jesus M Ugalde,a and Xabier Lopeza a. Kimika Fakultatea, Euskal Herriko Unibertsitatea (UPV/EHU) and Donostia International Physics Center (DIPC) P.K. 1072, 20080 Donostia, Euskadi, Spain b. Laboratoire de Chimie Moleculaire Department of Chemistry, Ecole Polytechnique and CNRS 91128 Palaiseau Cedex, France c. POLYMAT, Euskal Herriko Unibertsitatea UPV/EHU Joxe Mari Korta zentroa, Tolosa Etorbidea 72 20018 Donostia-San Sebastián, Euskadi, Spain d. Laboratoire de Physico-Chimie des Surfaces (UMR 7045) ENSCP Chimie-Paristech, 11 rue P. et M. Curie, 75005 Paris, France Abstract The increased availability of aluminium in biological environments, due to human intervention in the last century, raises concerns on the effects that this so far “excluded from biology” metal might have on living organisms. Consequently, the bioinorganic chemistry of aluminium has emerged as a very active field of research. This review will focus on our contributions to this field, based on computational studies that can yield an understanding of the aluminum biochemistry at a molecular level. Aluminium can interact and be stabilized in biological environments by complexing with both low molecular mass chelants and high molecular mass peptides. The speciation of the metal is, nonetheless, dictated by the hydrolytic species dominant in each case and which vary according to the pH condition of the medium. In blood, citrate and serum transferrin are identified as the main low molecular mass and high molecular mass molecules interacting with aluminium. The complexation of aluminium to citrate and the subsequent changes exerted on the deprotonation pathways of its tritable groups will be discussed along with the mechanisms for the intake and release of aluminium in serum transferrin at two pH conditions, physiological neutral and endosomatic acidic. Aluminium can substitute other metals, in particular magnesium, in protein buried sites and trigger conformational disorder and alteration of the protonation states of the protein’s sidechains. A detailed account of the interaction of aluminium with proteic sidechains will be given. Finally, it will be described how alumnium can exert oxidative stress by stabilizing superoxide radicals either as mononuclear aluminium or clustered in boehmite. The possibility of promotion of Fenton reaction, and production of hydroxyl radicals will also be discussed. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3995234/ “The increased availability of aluminium in biological environments, due to human intervention in the last century, raises concerns on the effects that this so far “excluded from biology” metal might have on living organisms.” “There is prolonged retention of a fraction of aluminium that enters the brain ...” Neurotoxicology • March 2014 Oxidative stress and mitochondrial dysfunction in aluminium neurotoxicity and its amelioration: a review Author information Kumar V1, Gill KD2. 1. Department of Biochemistry, Maharshi Dayanand University, Rohtak, India 2. Department of Biochemistry, Maharshi Dayanand University, Rohtak, India Department of Biochemistry, Postgraduate Institute of Medical Education and Research Chandigarh, India kdgill2002@yahoo.co.in Abstract Aluminium is light weight and toxic metal present ubiquitously on earth which has gained considerable attention due to its neurotoxic effects. The widespread use of products made from or containing aluminium is ensuring its presence in our body. There is prolonged retention of a fraction of aluminium that enters the brain, suggesting its potential for accumulation with repeated exposures. There is no known biological role for aluminium within the body but adverse physiological effects of this metal have been observed in mammals. The generation of oxidative stress may be attributed to its toxic consequences in animals and humans. The oxidative stress has been implicated in pathogenesis of various neurodegenerative conditions including Alzheimer’s disease and Parkinson’s disease. Though it remains unclear whether oxidative stress is a major cause or merely a consequence of cellular dysfunction associated with neurodegenerative diseases, an accumulating body of evidence implicates that impaired mitochondrial energy production and increased mitochondrial oxidative damage is associated with the pathogenesis of neurodegenerative disorders. Being involved in the production of reactive oxygen species, aluminium may impair mitochondrial bioenergetics and may lead to the generation of oxidative stress. In this review, we have discussed the oxidative stress and mitochondrial dysfunctions occurring in Al neurotoxicity. In addition, the ameliorative measures undertaken in aluminium induced oxidative stress and mitochondrial dysfunctions have also been highlighted. http://www.ncbi.nlm.nih.gov/pubmed/24560992 Journal Of Trace Elements In Medical Biology • April 2014 If exposure to aluminium in antiperspirants presents health risks, its content should be reduced Author information Pineau A1, Fauconneau B2, Sappino AP3, Deloncle R4, Guillard O5. 1. Université de Nantes, Faculté de Pharmacie Laboratoire de Toxicologie, 44035 Nantes, France 2. Université de Poitiers, Faculté de Médecine et de Pharmacie Service de Pharmacologie clinique, CHU Poitiers, 86021 Poitiers, France 3. Clinique des Grangettes, Chemin des Grangettes 7 1224 Chêne-Bougeries, Confédération Helvétique, Switzerland 4. Université de Tours, Faculté de Pharmacie, Laboratoire de Toxicologie, 37000 Tours, France 5. Université de Poitiers, Faculté de Médecine et Pharmacie 6 rue de la Milétrie, 86034 Poitiers, France olivier.guillard@univ-poitiers.fr Abstract Since aluminium (Al) pervades our environment, the scientific community has for many years raised concerns regarding its safety in humans. Al is present in numerous cosmetics such as antiperspirants, lipsticks and sunscreens. Al chlorohydrate is the active antiperspirant agent in underarm cosmetics and may constitute for Al a key exposure route to the human body and a potential source of damage. An in vitro study has demonstrated that Al from antiperspirant can be absorbed through viable human stripped skin. The potential toxicity of Al has been clearly shown and recent works convincingly argue that Al could be involved in cancerogenic processes. Nowadays, for example, Al is suspected of being involved in breast cancer. Recent work in cells in culture has lent credence to the hypothesis that this metal could accumulate in the mammary gland and selectively interfere with the biological properties of breast epithelial cells, thereby promoting a cascade of alterations reminiscent of the early phases of malignant transformation. In addition, several studies suggest that the presence of Al in human breast could influence metastatic process. As a consequence, given that the toxicity of Al has been widely recognized and that it is not a physiological component in human tissues, reducing the concentration of this metal in antiperspirants is a matter of urgency. http://www.ncbi.nlm.nih.gov/pubmed/?term=24418462 “Al chlorohydrate is the active antiperspirant agent in underarm cosmetics and may constitute for Aluminum a key exposure route to the human body and a potential source of damage. An in vitro study has demonstrated that Aluminum from antiperspirant can be absorbed through viable human stripped skin. The potential toxicity of Aluminum has been clearly shown and recent works convincingly argue that Aluminum could be involved in cancerogenic processes.” World Journal Of Pediatrics • May 2014 Aluminum exposure and toxicity in neonates: a practical guide to halt aluminum overload in the prenatal and perinatal periods Author information Fanni D1, Ambu R, Gerosa C, Nemolato S, Iacovidou N, Van Eyken P, Fanos V, Zaffanello M, Faa G. Department of Pathology University Hospital San Giovanni di Dio AOU Cagliari and University of Cagliari Cagliari, Italy Abstract BACKGROUND During the last years, human newborns have been overexposed to biologically reactive aluminum, with possible relevant consequences on their future health and on their susceptibility to a variety of diseases. Children, newborns and particularly preterm neonates are at an increased risk of aluminum toxicity because of their relative immaturity. DATA SOURCES Based on recent original publications and classical data of the literatures, we reviewed the aluminum content in mother’s food during the intrauterine life as well as in breast milk and infant formula during lactation. We also determined the possible role of aluminum in parenteral nutrition solutions, in adjuvants of vaccines and in pharmaceutical products. A special focus is placed on the relationship between aluminum overexposure and the insurgence of bone diseases. RESULTS Practical points of management and prevention are suggested. Aluminum sources that infants may receive during the first 6 months of life are presented. In the context of prevention of possible adverse effects of aluminum overload in fetal tissues during development, simple suggestions to pregnant women are described. Finally, practical points of management and prevention are suggested. CONCLUSIONS Pediatricians and neonatologists must be more concerned about aluminum content in all products our newborns are exposed to, starting from monitoring aluminum concentrations in milk- and soy-based formulas in which, on the basis of recent studies, there is still too much aluminum. http://www.ncbi.nlm.nih.gov/pubmed/24801228 “Pediatricians and neonatologists must be more concerned about aluminum content in all products our newborns are exposed to, starting from monitoring aluminum concentrations in milk and soy based formulas in which, on the basis of recent studies, there is still too much aluminum.” Mucosal Immunology • May 2014 Aluminum enhances inflammation and decreases mucosal healing in experimental colitis in mice Author information Pineton de Chambrun G1, Body-Malapel M2, Frey-Wagner I3, Djouina M2, Deknuydt F4, Atrott K3, Esquerre N2, Altare F4, Neut C5, Arrieta MC6, Kanneganti TD7, Rogler G3, Colombel JF1, Cortot A1, Desreumaux P1, Vignal C2 1. Univ Lille Nord de France, Lille, France [2] Inserm U995, Lille, France [3] UDSL, Lille, France [4] Hepato-Gastroenterology Department, CHU Lille, Lille, France 2. Univ Lille Nord de France, Lille, France [2] Inserm U995, Lille, France [3] UDSL, Lille, France 3. Division of Gastroenterology and Hepatology, University Hospital Zurich, Zurich, Switzerland 4. INSERM, UMR892, Nantes, France [2] CNRS, UMR6299, Nantes, France [3] Université de Nantes, Nantes, France 5. Univ Lille Nord de France, Lille, France [2] Inserm U995, Lille, France [3] UDSL, Lille, France [4] Clinical Bacteriology, College of Pharmacy, Lille, France 6. Finlay Lab, Michael Smith Laboratories, University of British Columbia Vancouver, British Columbia, Canada 7. Department of Immunology, St Jude Children’s Research Hospital, Memphis, Tennessee, USA Abstract The increasing incidence of inflammatory bowel diseases (IBDs) in developing countries has highlighted the critical role of environmental pollutants as causative factors in their pathophysiology. Despite its ubiquity and immune toxicity, the impact of aluminum in the gut is not known. This study aimed to evaluate the effects of environmentally relevant intoxication with aluminum in murine models of colitis and to explore the underlying mechanisms. Oral administration of aluminum worsened intestinal inflammation in mice with 2,4,6-trinitrobenzene sulfonic acid- and dextran sodium sulfate-induced colitis and chronic colitis in interleukin 10-negative (IL10(-/-)) mice. Aluminum increased the intensity and duration of macroscopic and histologic inflammation, colonic myeloperoxidase activity, inflammatory cytokines expression, and decreased the epithelial cell renewal compared with control animals. Under basal conditions, aluminum impaired intestinal barrier function. In vitro, aluminum induced granuloma formation and synergized with lipopolysaccharide to stimulate inflammatory cytokines expression by epithelial cells. Deleterious effects of aluminum on intestinal inflammation and mucosal repair strongly suggest that aluminum might be an environmental IBD risk factor. http://www.ncbi.nlm.nih.gov/pubmed/24129165 “Deleterious effects of aluminum on intestinal inflammation and mucosal repair strongly suggest that aluminum might be an environmental Inflammatory Bowel Disease risk factor.” Expert Reviews In Neurotherapy • June 2014 What is the risk of aluminium as a neurotoxin? by Christopher Exley The Birchall Centre Lennard- Jones Laboratories Keele University, Staffordshire, UK The body burden of aluminium: To understand or even appreciate the risk that aluminium poses as a neurotoxin, we will need to further our understanding of the body burden of aluminium and we will need to implement measures to reduce the body burden to a lowest practical limit. I have recently reformulated the definition of aluminium’s body burden placing it into the context of what I have called aluminium’s exposome [13]. We have also been investigating noninvasive ways to reduce the uptake of aluminium into the body and, importantly, to facilitate the excretion of aluminium from the body. We were successful in lowering the body burden of aluminium in individuals with moderate-to-severe AD and concomitantly we were able to demonstrate clinically significant improvements in cognitive performance in some individuals [14]. These experiments offer some hope that the aluminium hypothesis of AD, and indeed other neurodegenerative diseases, might be tested by lowering the body burden of aluminium in affected individuals. Then we might be able to ascertain if AD, for example, is the human manifestation of the risk of aluminium as a known neurotoxin. “Then we might be able to ascertain if AD, for example, is the human manifestation of the risk of aluminium as a known neurotoxin.” https://www.futsci.com/uploads/project/file/da0e1cb2dbea30e405db672eea4290b35a0d6a90.pdf “There is now sufficient evidence from both human and animal studies showing that cumulative exposure to aluminium adjuvants is not as benign as previously assumed.” Autism • Causes & Prevalence • June 2014 Etiology of autism spectrum disorders: Genes, environment, or both? C Shaw1*, S Sheth1, D Li1, L Tomljenovic1 University of British Columbia, Vancouver, British Columbia, Canada cashawlab@gmail.com Abstract Thus far, most of the research on both neurodevelopmental and neurodegenerative disorders has been focused on finding the presumed underlying genetic causes, while much less emphasis has been put on potential environmental factors. While some forms of autism are clearly genetic, the fact remains that heritability factors cannot adequately explain all reported cases nor their drastic increase over the last few decades. In particular, studies on twins have now shown that common environmental factors account for 55% of their risk for developing autism while genetic susceptibility explains only 37% of cases. Because the prenatal environment and early postnatal environment are shared between twins and because overt symptoms of autism emerge around the end of the first year of life, it is likely that at least some of the environmental factors contributing to the risk of autism exert their deleterious neurodevelopmental effect during this early period of life. Indeed, evidence has now emerged showing that autism may in part result from early-life immune insults induced by environmental xenobiotics. One of the most common xenobiotic with immuno-stimulating as well as neurotoxic properties to which infants under two years of age are routinely exposed worldwide is the aluminum (Al) vaccine adjuvant. In this review we discuss the mechanisms by which Al can induce adverse neurological and immunological effects and how these may provide important clues of Al’s putative role in autism. Because of the tight connection between the development of the immune and the central nervous system, the possibility that immune-overstimulation in early infancy via vaccinations may play a role in neurobehavioural disorders needs to be carefully considered. Conclusion There is now sufficient evidence from both human and animal studies showing that cumulative exposure to aluminium adjuvants is not as benign as previously assumed. Given that vaccines are the only medical intervention that we attempt to deliver to every living human on earth and that by far the largest target population for vaccination are healthy children, a better appreciation and understanding of vaccine adjuvant risks appears warranted. http://www.oapublishinglondon.com/article/1368 Vaccine • July 2014 Aluminium in allergen-specific subcutaneous immunotherapy— a German perspective Author information Kramer MF1, Heath MD2. 1. Bencard Allergie GmbH, Messerschmittstr. 4, 80992 München, Germany. 2. Allergy Therapeutics, Plc. Dominion Way, Worthing BN14 8SA, United Kingdom matthew.heath@allergytherapeutics.com Abstract We are living in an “aluminium age” with increasing bioavailability of the metal for approximately 125 years, contributing significantly to the aluminium body burden of humans. Over the course of life, aluminium accumulates and is stored predominantly in the lungs, bones, liver, kidneys and brain. The toxicity of aluminium in humans is briefly summarised, highlighting links and possible causal relationships between a high aluminium body burden and a number of neurological disorders and disease states. Aluminium salts have been used as depot-adjuvants successfully in essential prophylactic vaccinations for almost 100 years, with a convincing positive benefit-risk assessment which remains unchanged. However, allergen-specific immunotherapy commonly consists of administering a long-course programme of subcutaneous injections using preparations of relevant allergens. Regulatory authorities currently set aluminium limits for vaccines per dose, rather than per treatment course. Unlike prophylactic vaccinations, numerous injections with higher proportions of aluminium-adjuvant per injection are applied in subcutaneous immunotherapy (SCIT) and will significantly contribute to a higher cumulative life dose of aluminium. While the human body may cope robustly with a daily aluminium overload from the environment, regulatory cumulative threshold values in immunotherapy need further addressing. Based on the current literature, predisposing an individual to an unusually high level of aluminium, such as through subcutaneous immunotherapy, has the potential to form focal accumulations in the body with the propensity to exert forms of toxicity. Particularly in relation to longer-term health effects, the safety of aluminium adjuvants in immunotherapy remains unchallenged by health authorities - evoking the need for more consideration, guidance, and transparency on what is known and not known about its safety in long-course therapy and what measures can be taken to prevent or minimise its risks. The possibility of providing an effective means of measuring aluminium accumulation in patients undergoing long-term SCIT treatment as well as reducing their aluminium body burden is discussed. Full Report http://www.sciencedirect.com/science/article/pii/S0264410X14007397 “... the safety of aluminium adjuvants in immunotherapy remains unchallenged by health authorities - evoking the need for more consideration ...” “... there is only a limited understanding of the response of regulatory T cells to aluminum adjuvants and the vaccines that contain them.” Vaccine • September 2014 A role for impaired regulatory T cell function in adverse responses to aluminum adjuvant-containing vaccines in genetically susceptible individuals Author information Terhune TD, Deth RC. Department of Pharmaceutical Sciences Northeastern University, Boston, MA, USA toddterhune@comcast.net Abstract Regulatory T cells play a critical role in the immune response to vaccination, but there is only a limited understanding of the response of regulatory T cells to aluminum adjuvants and the vaccines that contain them. Available studies in animal models show that although induced T regulatory cells may be induced concomitantly with effector T cells following aluminum-adjuvanted vaccination, they are unable to protect against sensitization, suggesting that under the Th2 immune-stimulating effects of aluminum adjuvants, Treg cells may be functionally compromised. Allergic diseases are characterized by immune dysregulation, with increases in IL-4 and IL-6, both of which exert negative effects on Treg function. For individuals with a genetic predisposition, the beneficial influence of adjuvants on immune responsiveness may be accompanied by immune dysregulation, leading to allergic diseases. This review examines aspects of the regulatory T cell response to aluminum-adjuvanted immunization and possible genetic susceptibility factors related to that response. http://www.ncbi.nlm.nih.gov/pubmed/?term=25066736 Journal Of Toxicology • October 2014 Aluminum-induced entropy in biological systems: implications for neurological disease Author information Shaw CA1, Seneff S2, Kette SD3, Tomljenovic L4, Oller JW Jr5, Davidson RM6. 1. Neural Dynamics Research Group, Department of Ophthalmology and Visual Sciences 828 W. 10th Avenue, Vancouver, British Columbia, Canada V5Z 1L8; Program Experimental Medicine, University of British Columbia, Vancouver, Canada V5Z 1L8 Program in Neurosciences, University of British Columbia, Vancouver, Canada V5Z 1L8 2. MIT Computer Science and Artificial Intelligence Laboratory 32 Vassar Street, Cambridge, MA 02139, USA 3. Hudson, FL 34667, USA 4. Neural Dynamics Research Group, Department of Ophthalmology and Visual Sciences, 828 W. 10th Avenue, Vancouver, British Columbia, Canada V5Z 1L8 5. Department of Communicative Disorders, University of Louisiana Lafayette, LA 70504-3170, USA 6. Internal Medicine Group Practice, PhyNet Inc., 4002 Technology Center Longview, TX 75605, USA Abstract Over the last 200 years, mining, smelting, and refining of aluminum (Al) in various forms have increasingly exposed living species to this naturally abundant metal. Because of its prevalence in the earth’s crust, prior to its recent uses it was regarded as inert and therefore harmless. However, Al is invariably toxic to living systems and has no known beneficial role in any biological systems. Humans are increasingly exposed to Al from food, water, medicinals, vaccines, and cosmetics, as well as from industrial occupational exposure. Al disrupts biological self-ordering, energy transduction, and signaling systems, thus increasing biosemiotic entropy. Beginning with the biophysics of water, disruption progresses through the macromolecules that are crucial to living processes (DNAs, RNAs, proteoglycans, and proteins). It injures cells, circuits, and subsystems and can cause catastrophic failures ending in death. Al forms toxic complexes with other elements, such as fluorine, and interacts negatively with mercury, lead, and glyphosate. Al negatively impacts the central nervous system in all species that have been studied, including humans. Because of the global impacts of Al on water dynamics and biosemiotic systems, CNS disorders in humans are sensitive indicators of the Al toxicants to which we are being exposed. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4202242/ “Beginning with the biophysics of water, disruption progresses through the macromolecules that are crucial to living processes (DNAs, RNAs, proteoglycans, and proteins). It injures cells, circuits, and subsystems and can cause catastrophic failures ending in death. Aluminum forms toxic complexes with other elements, such as fluorine, and interacts negatively with mercury, lead, and glyphosate. Aluminum negatively impacts the central nervous system in all species that have been studied, including humans. Because of the global impacts of Aluminum on water dynamics and biosemiotic systems, Central Nervous System disorders in humans are sensitive indicators of the Aluminum toxicants to which we are being exposed. ... vaccine trials often treat an Aluminum adjuvant-containing injection as a harmless “ placebo “ (a comparison benchmark or control treatment) or they use another Al-containing vaccine to treat a “ control group, “ despite evidence that Aluminum in vaccine-relevant exposures is universally toxic to humans and animals. Its use in a supposed “ placebo “ or in any “ control “ treatment in vaccine trials is indefensible.” Critical Reviews In Toxicology • October 2014 Systematic review of potential health risks posed by pharmaceutical, occupational and consumer exposures to metallic and nanoscale aluminum, aluminum oxides, aluminum hydroxide and its soluble salts Author information Willhite CC1, Karyakina NA, Yokel RA, Yenugadhati N, Wisniewski TM, Arnold IM, Momoli F, Krewski D. Risk Sciences International, Ottawa, ON , Canada Abstract Abstract Aluminum (Al) is a ubiquitous substance encountered both naturally (as the third most abundant element) and intentionally (used in water, foods, pharmaceuticals, and vaccines); it is also present in ambient and occupational airborne particulates. Existing data underscore the importance of Al physical and chemical forms in relation to its uptake, accumulation, and systemic bioavailability. The present review represents a systematic examination of the peer-reviewed literature on the adverse health effects of Al materials published since a previous critical evaluation compiled by Krewski et al. (2007) . Challenges encountered in carrying out the present review reflected the experimental use of different physical and chemical Al forms, different routes of administration, and different target organs in relation to the magnitude, frequency, and duration of exposure. Wide variations in diet can result in Al intakes that are often higher than the World Health Organization provisional tolerable weekly intake (PTWI), which is based on studies with Al citrate. Comparing daily dietary Al exposures on the basis of “total Al”assumes that gastrointestinal bioavailability for all dietary Al forms is equivalent to that for Al citrate, an approach that requires validation. Current occupational exposure limits (OELs) for identical Al substances vary as much as 15-fold. The toxicity of different Al forms depends in large measure on their physical behavior and relative solubility in water. The toxicity of soluble Al forms depends upon the delivered dose of Al(+3) to target tissues. Trivalent Al reacts with water to produce bidentate superoxide coordination spheres [Al(O2)(H2O4)(+2) and Al(H2O)6 (+3)] that after complexation with O2(•-), generate Al superoxides [Al(O2(•))](H2O5)](+2). Semireduced AlO2(•) radicals deplete mitochondrial Fe and promote generation of H2O2, O2 (•-) and OH(•). Thus, it is the Al(+3)-induced formation of oxygen radicals that accounts for the oxidative damage that leads to intrinsic apoptosis. In contrast, the toxicity of the insoluble Al oxides depends primarily on their behavior as particulates. Aluminum has been held responsible for human morbidity and mortality, but there is no consistent and convincing evidence to associate the Al found in food and drinking water at the doses and chemical forms presently consumed by people living in North America and Western Europe with increased risk for Alzheimer’s disease (AD). Neither is there clear evidence to show use of Al-containing underarm antiperspirants or cosmetics increases the risk of AD or breast cancer. Metallic Al, its oxides, and common Al salts have not been shown to be either genotoxic or carcinogenic. Aluminum exposures during neonatal and pediatric parenteral nutrition (PN) can impair bone mineralization and delay neurological development. Adverse effects to vaccines with Al adjuvants have occurred; however, recent controlled trials found that the immunologic response to certain vaccines with Al adjuvants was no greater, and in some cases less than, that after identical vaccination without Al adjuvants. The scientific literature on the adverse health effects of Al is extensive. Health risk assessments for Al must take into account individual co-factors (e.g., age, renal function, diet, gastric pH). Conclusions from the current review point to the need for refinement of the PTWI, reduction of Al contamination in PN solutions, justification for routine addition of Al to vaccines, and harmonization of OELs for Al substances. http://www.ncbi.nlm.nih.gov/pubmed/25233067 “The scientific literature on the adverse health effects of Al is extensive. Conclusions from the current review point to the need for refinement of the provisional tolerable weekly intake (PTWI), reduction of Aluminum contamination in parenteral nutrition (PN) solutions, justification for routine addition of Aluminum to vaccines ...” Frontiers In Neurology • October 2014 Why industry propaganda and political interference cannot disguise the inevitable role played by human exposure to aluminum in neurodegenerative diseases, including Alzheimer’s disease Author Information “Herein, I will make the case Christopher Exley that it is inevitable both today and in the The Birchall Centre, Lennard-Jones Laboratories Keele University, Stoke-on-Trent, UK Abstract In the aluminum age, it is clearly unpalatable for aluminum, the globe’s most successful metal, to be implicated in human disease. It is unpalatable because for approximately 100 years human beings have reaped the rewards of the most abundant metal of the Earth’s crust without seriously considering the potential consequences for human health. The aluminum industry is a pillar of the developed and developing world and irrespective of the tyranny of human exposure to aluminum it cannot be challenged without significant consequences for businesses, economies, and governments. However, no matter how deep the dependency or unthinkable the withdrawal, science continues to document, if not too slowly, a burgeoning body burden of aluminum in human beings. Herein, I will make the case that it is inevitable both today and in the future that an individual’s exposure to aluminum is impacting upon their health and is already contributing to, if not causing, chronic diseases such as Alzheimer’s disease. This is the logical, if uncomfortable, consequence of living in the aluminum age. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4209859/ future that an individual’s exposure to aluminum is impacting upon their health and is already contributing to, if not causing, chronic diseases such as Alzheimer’s disease. This is the logical, if uncomfortable, consequence of living in the aluminum age.” Environmental Science And Pollution Research International • November 2014 Effects of aluminium and bacterial lipopolysaccharide on oxidative stress and immune parameters in roach, Rutilus rutilus L Author information Jolly S1, Jaffal A, Delahaut L, Palluel O, Porcher JM, Geffard A, Sanchez W, Betoulle S. Université de Reims Champagne-Ardenne UMR-I02 SEBIO, BP 1039, 51687 Reims Cedex 2, France sabrina.jolly@univ-reims.fr Abstract Aluminium is used in diverse anthropogenic processes at the origin of pollution events in aquatic ecosystems. In the Champagne region (France), high concentrations of aluminium (Al) are detected due to vine-growing practices. In fish, little is known about the possible immune-related effects at relevant environmental concentrations. The present study analyzes the simultaneous effects of aluminium and bacterial lipopolysaccharide (LPS), alone and in combination, on toxicological biomarkers in the freshwater fish species Rutilus rutilus. For this purpose, roach treated or not with LPS were exposed to environmental concentrations of aluminium (100 μg/L) under laboratory-controlled conditions for 2, 7, 14 and 21 days. After each exposure time, we assessed hepatic lipoperoxidation, catalase activity, glutathione reductase activity and total glutathione content. We also analyzed cellular components related to the LPSinduced inflammatory response in possible target tissues, i.e. head kidney and spleen. Our results revealed a significant prooxidant effect in the liver cells and head kidney leukocytes of roach exposed to 100 μg of Al/L for 2 days. In liver, we observed more lipoperoxidation products and lower endogenous antioxidant activity levels such as glutathione reductase activity and total glutathione content. These prooxidant effects were associated with a higher oxidative burst in head kidney leukocytes, and they were all the more important in fish stimulated by LPS injection. These findings demonstrate that environmental concentrations of Al induce oxidative and immunotoxic effects in fish and are associated to an immunomodulatory process related to the inflammatory response. http://www.ncbi.nlm.nih.gov/pubmed/24996940 “These findings demonstrate that environmental concentrations of Aluminum induce oxidative and immunotoxic effects in fish and are associated to an immunomodulatory process related to the inflammatory response.” Science Reports • September 2014 Unequivocal identification of intracellular aluminium adjuvant in a monocytic THP-1 cell line Author information Mold M1, Eriksson H2, Siesjö P3, Darabi A3, Shardlow E1, Exley C1. 1. The Birchall Centre, Lennard-Jones Laboratories, Keele University Keele, Staffordshire, ST5 5BG, UK 2. Department of Biomedical Laboratory Science, Faculty of Health and Society Malmö University, SE-205 06 Malmö, Sweden 3. Glioma Immunotherapy Group, Department of Clinical Sciences BMC D14, Lund University, SE-221 84 Lund, Sweden Abstract Aluminium-based adjuvants (ABA) are the predominant adjuvants used in human vaccinations. While a consensus is yet to be reached on the aetiology of the biological activities of ABA several studies have identified shape, crystallinity and size as critical factors affecting their adjuvanticity. In spite of recent advances, the fate of ABA following their administration remains unclear. Few if any studies have demonstrated the unequivocal presence of intracellular ABA. Herein we demonstrate for the first time the unequivocal identification of ABA within a monocytic T helper 1 (THP-1) cell line, using lumogallion as a fluorescent molecular probe for aluminium. Use of these new methods revealed that particulate ABA was only found in the cell cytoplasm. Transmission electron microscopy revealed that ABA were contained within vesicle-like structures of approximately 0.5-1 μm in diameter. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4155332/ “In spite of recent advances, the fate of Aluminium-based adjuvants following their administration remains unclear. Herein we demonstrate for the first time the unequivocal identification of ABA within a monocytic T helper 1 cell line, using lumogallion as a fluorescent molecular probe for aluminium. Use of these new methods revealed that particulate Aluminium-based adjuvants was only found in the cell cytoplasm.” “This short “Opinion” paper will overview and comment on the current massive mobilization of aluminum into the earth’s biosphere.” Frontiers In Neurology • December 2014 The mobilization of aluminum into the biosphere Aileen I. Pogue1 and Walter J. Lukiw2,3* 1. Alchem Biotech, Toronto, ON, Canada 2. Louisiana State University Neuroscience Center and Department of Ophthalmology Louisiana State University School of Medicine, New Orleans, LA, USA 3. Department of Neurology, Louisiana State University Health Sciences Center New Orleans, LA, USA Abstract Aluminum is currently the most widely used non-ferrous metal, and its extraction and purification from geological stores exceeds that of any other metal except iron (1, 2). In 2013, global primary aluminum production was ~52 million tons (104 billion pounds) or about 15 pounds for very person on the earth (1–4). The global outlook for aluminum demand from developing countries such as Brazil, China, India, and Indonesia is rapidly increasing, due to new applications for aluminum and aluminum alloys in infrastructural support, transportation including automobiles, aviation and aerospace applications, electrical transmission, and the generation of energy, including catalytic zeolites in the petroleum and petrochemical industries (5). Interestingly, the largest “machine” built by humankind is the domestic and international networks for the transmission of electricity. Although traditionallyused copper has a higher electrical conductivity, aluminum is only slightly less so, being lighter, more ductile, and less expensive; aluminum is now widely used for both high-voltage tower construction and the electrical transmission wires themselves (2–5). It has been estimated that within the next 10 years aluminum production will exceed that of the previous 150 years (1–3). This prolific de novo generation of aluminum combined with its highly efficient recycling means this metal is becoming increasingly present in our biosphere, defined as the sum of all ecosystems and living organisms on the earth. This short “Opinion” paper will overview and comment on the current massive mobilization of aluminum into the earth’s biosphere. http://journal.frontiersin.org/article/10.3389/fneur.2014.00262/full Immunology Research • December 2014 Autoimmune/inflammatory syndrome induced by adjuvants (ASIA): clues and pitfalls in the pediatric background Author information Esposito S1, Prada E, Mastrolia MV, Tarantino G, Codecà C, Rigante D. Pediatric Highly Intensive Care Unit Department of Pathophysiology and Transplantation Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico Università degli Studi di Milano Via Commenda 9, 20122, Milan, Italy susanna.esposito@unimi.it Abstract The development and increasing diffusion of new vaccinations and global immunization protocols have aroused burning debates about safety of adjuvants and their immunogenicity-enhancing effect in vaccines. Shoenfeld and Agmon-Levin have grouped under the term “autoimmune/inflammatory syndrome induced by adjuvants” (ASIA) a complex of variable signs and symptoms that may occur after a previous exposure to different adjuvants and also external environmental triggers, even eliciting specific overt immune-mediated disorders. This entity subsumes five medical conditions: post-vaccination phenomena, gulf war syndrome, macrophagic myofasciitis syndrome, siliconosis, and sick building syndrome, but the relevance and magnitude of the syndrome in the pediatric age is fundamentally limited to post-vaccination autoimmune or inflammatory disorders. The occurrence of vaccine-triggered phenomena represents a diagnostic challenge for clinicians and a research conundrum for many investigators. In this paper, we will analyze the general features of ASIA and focus on specific post-vaccination events in relation with the pediatric background. In the presence of a favorable genetic background, many autoimmune/inflammatory responses can be triggered by adjuvants and external factors, showing how the man himself might breach immune tolerance and drive many pathogenetic aspects of human diseases. Nonetheless, the elective application of ASIA diagnostic criteria to the pediatric population requires further assessment and evaluations. Additional studies are needed to help clarify connections between innate or adaptive immunity and pathological and/or protective autoantibodies mostly in the pediatric age, as children and adolescents are mainly involved in the immunization agendas related to vaccine-preventable diseases. http://www.ncbi.nlm.nih.gov/pubmed/25395340 “In the presence of a favorable genetic background, many autoimmune/inflammatory responses can be triggered by adjuvants and external factors, showing how the man himself might breach immune tolerance and drive many pathogenetic aspects of human diseases.” Reproductive Toxicology • December 2014 Aluminum content of human semen: implications for semen quality Author information Klein JP1, Mold M2, Mery L3, Cottier M4, Exley C5. 1. Université de Lyon, F-42023, Saint-Etienne, EA 4624, SFR IFRESIS, France Université Jean Monnet and CHU de Saint-Etienne, France 2. The Birchall Centre, Lennard Jones Laboratories Keele University, Staffordshire ST5 5BG, UK 3. Université de Lyon, F-42023, Saint-Etienne, EA 4624, SFR IFRESIS, France Université Jean Monnet and CHU de Saint-Etienne, France 4. Université de Lyon, F-42023, Saint-Etienne, EA 4624, SFR IFRESIS, France Université Jean Monnet and CHU de Saint-Etienne, France 5. The Birchall Centre, Lennard Jones Laboratories Keele University, Staffordshire ST5 5BG, UK c.exley@keele.ac.uk Abstract A deterioration of human semen quality has been observed over recent decades. A possible explanation could be an increased exposure to environmental pollutants, including aluminum. Our aim was to measure the aluminum concentration in the semen of 62 patients and to carry out a preliminary evaluation on its impact on specific semen parameters. For each patient, semen analyses were performed according to WHO guidelines. A graphite furnace atomic absorption spectrometry method was used to determine semen aluminum concentration. A cytological analysis using an aluminum-specific fluor, lumogallion, was also performed. The mean aluminum concentration in human semen was 339 μg/L. Patients with oligozoospermia had a statistically higher aluminum concentration than others. No significant difference was observed for other semen parameters. Cytological analysis showed the presence of aluminum in spermatozoa. This study provided unequivocal evidence of high concentrations of aluminum in human semen and suggested possible implications for spermatogenesis and sperm count. http://www.ncbi.nlm.nih.gov/pubmed/25461904 “This study provided unequivocal evidence of high concentrations of aluminum in human semen and suggested possible implications for spermatogenesis and sperm count.” Journal of Alzheimer’s Disease • 2014 Chronic aluminum intake causes Alzheimer’s disease: applying Sir Austin Bradford Hill’s causality criteria Walton JR Faculty of Medicine University of New South Wales St George Hospital, Sydney, Australia Industrialized societies produce many convenience foods with aluminum additives that enhance various food properties and use alum (aluminum sulfate or aluminum potassium sulfate) in water treatment to enable delivery of large volumes of drinking water to millions of urban consumers. The present causality analysis evaluates the extent to which the routine, life-long intake, and metabolism of aluminum compounds can account for Alzheimer’s disease (AD), using Austin Bradford Hill’s nine epidemiological and experimental causality criteria, including strength of the relationship, consistency, specificity, temporality, dose-dependent response, biological rationale, coherence with existing knowledge, experimental evidence, and analogy. Mechanisms that underlie the risk of low concentrations of aluminum relate to (1) aluminum’s absorption rates, allowing the impression that aluminum is safe to ingest and as an additive in food and drinking water treatment, (2) aluminum’s slow progressive uptake into the brain over a long prodromal phase, and (3) aluminum’s similarity to iron, in terms of ionic size, allows aluminum to use ironevolved mechanisms to enter the highly-active, iron-dependent cells responsible for memory processing. Aluminum particularly accumulates in these iron-dependent cells to toxic levels, dysregulating iron homeostasis and causing microtubule depletion, eventually producing changes that result in disconnection of neuronal afferents and efferents, loss of function and regional atrophy consistent with MRI findings in AD brains. AD is a human form of chronic aluminum neurotoxicity. The causality analysis demonstrates that chronic aluminum intake causes AD. http://europepmc.org/abstract/med/24577474 “Aluminum particularly accumulates in these iron-dependent cells to toxic levels, dysregulating iron homeostasis and causing microtubule depletion, eventually producing changes that result in disconnection of neuronal afferents and efferents, loss of function and regional atrophy consistent with MRI findings in AD brains. AD is a human form of chronic aluminum neurotoxicity. The causality analysis demonstrates that chronic aluminum intake causes AD.” Immunotherapy • 2014 Are there negative CNS impacts of aluminum adjuvants used in vaccines and immunotherapy? Author information Shaw CA1, Li D, Tomljenovic L. Neural Dynamics Research Group 828 W. 10th Ave, Vancouver BC, V5Z 1L8, Canada Abstract In spite of a common view that aluminum (Al) salts are inert and therefore harmless as vaccine adjuvants or in immunotherapy, the reality is quite different. In the following article we briefly review the literature on Al neurotoxicity and the use of Al salts as vaccine adjuvants and consider not only direct toxic actions on the nervous system, but also the potential impact for triggering autoimmunity. Autoimmune and inflammatory responses affecting the CNS appear to underlie some forms of neurological disease, including developmental disorders. Al has been demonstrated to impact the CNS at every level, including by changing gene expression. These outcomes should raise concerns about the increasing use of Al salts as vaccine adjuvants and for the application as more general immune stimulants. http://www.ncbi.nlm.nih.gov/pubmed/25428645 “Aluminum has been demonstrated to impact the Central Nervous System at every level, including by changing gene expression. These outcomes should raise concerns about the increasing use of Aluminum salts as vaccine adjuvants and for the application as more general immune stimulants.” “Currently, ethylmercury (EtHg) and adjuvant-Aluminum are the dominating interventional exposures encountered by fetuses, newborns, and infants due to immunization with Thimerosal-containing vaccines (TCVs). Despite their long use as active agents of medicines and fungicides, the safety levels of these substances have never been determined, either for animals or for adult humans—much less for fetuses, newborns, infants, and children.” International Journal Of Environmental Research And Public Health • January 2015 Exposure to mercury and aluminum in early life: developmental vulnerability as a modifying factor in neurologic and immunologic effects Author information Dórea JG. Department of Nutrition Faculty of Health Sciences Universidade de Brasilia 70919-970 DF Brasilia, Brazil jg.dorea@gmail.com Abstract Currently, ethylmercury (EtHg) and adjuvant-Al are the dominating interventional exposures encountered by fetuses, newborns, and infants due to immunization with Thimerosal-containing vaccines (TCVs). Despite their long use as active agents of medicines and fungicides, the safety levels of these substances have never been determined, either for animals or for adult humans—much less for fetuses, newborns, infants, and children. I reviewed the literature for papers reporting on outcomes associated with (a) multiple exposures and metabolism of EtHg and Al during early life; (b) physiological and metabolic characteristics of newborns, neonates, and infants relevant to xenobiotic exposure and effects; (c) neurobehavioral, immunological, and inflammatory reactions to Thimerosal and Al-adjuvants resulting from TCV exposure in infancy. Immunological and neurobehavioral effects of Thimerosal-EtHg and Al-adjuvants are not extraordinary; rather, these effects are easily detected in high and low income countries, with co-exposure to methylmercury (MeHg) or other neurotoxicants. Rigorous and replicable studies (in different animal species) have shown evidence of EtHg and Al toxicities. More research attention has been given to EtHg and findings have showed a solid link with neurotoxic effects in humans; however, the potential synergic effect of both toxic agents has not been properly studied. Therefore, early life exposure to both EtHg and Al deserves due consideration. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4344667 Frontiers In Neurology • February 2015 Biopersistence and brain translocation of aluminum adjuvants of vaccines Author information Gherardi RK1, Eidi H1, Crépeaux G1, Authier FJ1, Cadusseau J1. Faculté de Médecine and Faculté des Sciences et Technologie INSERM U955 Team 10, Université Paris Est-Créteil Créteil, France Abstract Aluminum oxyhydroxide (alum) is a crystalline compound widely used as an immunological adjuvant of vaccines. Concerns linked to the use of alum particles emerged following recognition of their causative role in the so-called macrophagic myofasciitis (MMF) lesion detected in patients with myalgic encephalomyelitis/chronic fatigue/syndrome. MMF revealed an unexpectedly long-lasting biopersistence of alum within immune cells in presumably susceptible individuals, stressing the previous fundamental misconception of its biodisposition. We previously showed that poorly biodegradable aluminum-coated particles injected into muscle are promptly phagocytosed in muscle and the draining lymph nodes, and can disseminate within phagocytic cells throughout the body and slowly accumulate in brain. This strongly suggests that long-term adjuvant biopersistence within phagocytic cells is a prerequisite for slow brain translocation and delayed neurotoxicity. The understanding of basic mechanisms of particle biopersistence and brain translocation represents a major health challenge, since it could help to define susceptibility factors to develop chronic neurotoxic damage. Biopersistence of alum may be linked to its lysosome-destabilizing effect, which is likely due to direct crystal-induced rupture of phagolysosomal membranes. Macrophages that continuously perceive foreign particles in their cytosol will likely reiterate, with variable interindividual efficiency, a dedicated form of autophagy (xenophagy) until they dispose of alien materials. Successful compartmentalization of particles within double membrane autophagosomes and subsequent fusion with repaired and re-acidified lysosomes will expose alum to lysosomal acidic pH, the sole factor that can solubilize alum particles. Brain translocation of alum particles is linked to a Trojan horse mechanism previously described for infectious particles (HIV, HCV), that obeys to CCL2, signaling the major inflammatory monocyte chemoattractant. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4318414/ “This strongly suggests that long-term adjuvant biopersistence within phagocytic cells is a prerequisite for slow brain translocation and delayed neurotoxicity.” Biotechnic And Histochemistry • February 2015 A histological study of toxic effects of aluminium sulfate on rat hippocampus Author information Çabus N1, Oguz EO, Tufan AÇ, Adıgüzel E. Department of Histology and Embryology Faculty of Medicine, Hacettepe University Sihhiye Ankara, Turkey Abstract Aluminium has toxic effects on many organ systems of the human body. Aluminium toxicity also is a factor in many neurodegenerative diseases. We investigated changes in numbers of hippocampal neurons in rats exposed to aluminium using an optical fractionator and we investigated aluminium-induced apoptosis using the transferase mediated dUTP nick end labeling (TUNEL) assay. Twenty-four female rats were divided equally into control, sham and aluminium-exposed groups. The control group received no treatment. The two treatment groups were injected intraperitoneally with 1 ml 0.9% saline without (sham) and with 3 mg/ml aluminium sulfate every day for two weeks. Following the treatments, the brains were removed, the left hemisphere was used for hippocampal neuron counting using an optical fractionator and the right hemisphere was investigated using hippocampal TUNEL assay to determine the apoptotic index. The number of neurons in the stratum pyramidale of the hippocampus was significantly less in the aluminium group than in the control and sham groups; there was no significant difference between the control and sham groups. The apoptotic index also was significantly higher in the aluminium group than in the other two groups. We quantified the toxic effects of aluminium on the rat hippocampus and determined that apoptosis was the mechanism of aluminium-induced neuron death in the hippocampus. http://www.ncbi.nlm.nih.gov/pubmed/25314162 “Aluminium has toxic effects on many organ systems of the human body. We quantified the toxic effects of aluminium on the rat hippocampus and determined that apoptosis was the mechanism of aluminiuminduced neuron death in the hippocampus.” Journal Of Trace Elements In Medicine And Biology • April 2015 The binding, transport and fate of aluminium in biological cells Author information Exley C1, Mold MJ2. The Birchall Centre, Lennard-Jones Laboratories Keele University, Staffordshire ST5 5BG, UK c.exley@keele.ac.uk Abstract Aluminium is the most abundant metal in the Earth’s crust and yet, paradoxically, it has no known biological function. Aluminium is biochemically reactive, it is simply that it is not required for any essential process in extant biota. There is evidence neither of element-specific nor evolutionarily conserved aluminium biochemistry. This means that there are no ligands or chaperones which are specific to its transport, there are no transporters or channels to selectively facilitate its passage across membranes, there are no intracellular storage proteins to aid its cellular homeostasis and there are no pathways which evolved to enable the metabolism and excretion of aluminium. Of course, aluminium is found in every compartment of every cell of every organism, from virus through to Man. Herein we have investigated each of the ‘silent’ pathways and metabolic events which together constitute a form of aluminium homeostasis in biota, identifying and evaluating as far as is possible what is known and, equally importantly, what is unknown about its uptake, transport, storage and excretion. http://www.ncbi.nlm.nih.gov/pubmed/25498314 “Of course, aluminium is found in every compartment of every cell of every organism, from virus through to Man. Herein we have investigated each of the ‘silent’ pathways and metabolic events which together constitute a form of aluminium homeostasis in biota, identifying and evaluating as far as is possible what is known and, equally importantly, what is unknown about its uptake, transport, storage and excretion.” PLoS One • June 2015 Bumblebee pupae contain high levels of aluminium Author information Exley C1, Rotheray E2, Goulson D2. 1. The Birchall Centre, Lennard-Jones Laboratories, Keele University Stoke-on-Trent, Staffordshire, ST5 5BG, United Kingdom 2. Evolution, Behaviour & Ecology, School of Life Sciences University of Sussex, Brighton, BN1 9QG, United Kingdom Abstract The causes of declines in bees and other pollinators remains an on-going debate. While recent attention has focussed upon pesticides, other environmental pollutants have largely been ignored. Aluminium is the most significant environmental contaminant of recent times and we speculated that it could be a factor in pollinator decline. Herein we have measured the content of aluminium in bumblebee pupae taken from naturally foraging colonies in the UK. Individual pupae were acid-digested in a microwave oven and their aluminium content determined using transversely heated graphite furnace atomic absorption spectrometry. Pupae were heavily contaminated with aluminium giving values between 13.4 and 193.4 μg/g dry wt. and a mean (SD) value of 51.0 (33.0) μg/g dry wt. for the 72 pupae tested. Mean aluminium content was shown to be a significant negative predictor of average pupal weight in colonies. While no other statistically significant relationships were found relating aluminium to bee or colony health, the actual content of aluminium in pupae are extremely high and demonstrate significant exposure to aluminium. Bees rely heavily on cognitive function and aluminium is a known neurotoxin with links, for example, to Alzheimer’s disease in humans. The significant contamination of bumblebee pupae by aluminium raises the intriguing spectre of cognitive dysfunction playing a role in their population decline. Full Report: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4456414/ “the actual content of aluminium in pupae are extremely high and demonstrate significant exposure to aluminium.” Pharmacology Research • October 2015 Vaccines, adjuvants and autoimmunity Author information Guimarães LE1, Baker B1, Perricone C2, Shoenfeld Y3. 1. The Zabludowicz Center for Autoimmune Diseases, Chaim Sheba Medical Center, Tel-Hashomer, Israel 2. Reumatologia, Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Italy 3. Zabludowicz Center for Autoimmune Diseases, Chaim Sheba Medical Ctr, Tel-Hashomer, Israel; Incumbentof the Laura Schwarz-kipp chair for research of autoimmune diseases, Sackler Faculty of Medicine, Tel-Aviv University, Israel shoenfel@post.tau.ac.il Abstract Vaccines and autoimmunity are linked fields. Vaccine efficacy is based on whether host immune response against an antigen can elicit a memory T-cell response over time. Although the described side effects thus far have been mostly transient and acute, vaccines are able to elicit the immune system towards an autoimmune reaction. The diagnosis of a definite autoimmune disease and the occurrence of fatal outcome post-vaccination have been less frequently reported. Since vaccines are given to previously healthy hosts, who may have never developed the disease had they not been immunized, adverse events should be carefully accessed and evaluated even if they represent a limited number of occurrences. In this review of the literature, there is evidence of vaccine-induced autoimmunity and adjuvant-induced autoimmunity in both experimental models as well as human patients. Adjuvants and infectious agents may exert their immune-enhancing effects through various functional activities, encompassed by the adjuvant effect. These mechanisms are shared by different conditions triggered by adjuvants leading to the autoimmune/inflammatory syndrome induced by adjuvants (ASIA syndrome). In conclusion, there are several case reports of autoimmune diseases following vaccines, however, due to the limited number of cases, the different classifications of symptoms and the long latency period of the diseases, every attempt for an epidemiological study has so far failed to deliver a connection. Despite this, efforts to unveil the connection between the triggering of the immune system by adjuvants and the development of autoimmune conditions should be undertaken. Vaccinomics is a field that may bring to light novel customized, personalized treatment approaches in the future. http://www.ncbi.nlm.nih.gov/pubmed/26275795 “In this review of the literature, there is evidence of vaccine-induced autoimmunity and adjuvant-induced autoimmunity in both experimental models as well as human patients.” Journal Of Inorganic Biochemistry • November 2015 Highly delayed systemic translocation of aluminum-based adjuvant in CD1 mice following intramuscular injections Author information Crépeaux G1, Eidi H2, David MO3, Tzavara E4, Giros B4, Exley C5, Curmi PA3, Shaw CA6, Gherardi RK7, Cadusseau J8. 1. INSERM U955 E10, Paris Est University, Créteil, Franceguillemette.crepeaux@gmail.com. 2. INSERM U955 E10, Paris Est University, Créteil, France; INSERM U1204, Evry University, Evry, France 3. INSERM U1204, Evry University, Evry, France 4. INSERM U1130, CNRS UMR 8246, UPMC UM CR18, Paris, France 5. Birchall Centre, Keele University, Staffordshire, UK 6. Department of Ophthalmology, University of British Columbia, Vancouver, BC, Canada 7. INSERM U955 E10, Paris Est University, Créteil, France 8. INSERM U955 E10, Paris Est University, Créteil, France; Faculté des Sciences & Technologie UPEC, Créteil, France Abstract Concerns regarding vaccine safety have emerged following reports of potential adverse events in both humans and animals. In the present study, alum, alum-containing vaccine and alum adjuvant tagged with fluorescent nanodiamonds were used to evaluate i) the persistence time at the injection site, ii) the translocation of alum from the injection site to lymphoid organs, and iii) the behavior of adult CD1 mice following intramuscular injection of alum (400μgAl/kg). Results showed for the first time a strikingly delayed systemic translocation of adjuvant particles. Alum-induced granuloma remained for a very long time in the injected muscle despite progressive shrinkage from day 45 to day 270. Concomitantly, a markedly delayed translocation of alum to the draining lymph nodes, major at day 270 endpoint, was observed. Translocation to the spleen was similarly delayed (highest number of particles at day 270). In contrast to C57BL/6J mice, no brain translocation of alum was observed by day 270 in CD1 mice. Consistently neither increase of Al cerebral content, nor behavioral changes were observed. On the basis of previous reports showing alum neurotoxic effects in CD1 mice, an additional experiment was done, and showed early brain translocation at day 45 of alum injected subcutaneously at 200μgAl/kg. This study confirms the striking biopersistence of alum. It points out an unexpectedly delayed diffusion of the adjuvant in lymph nodes and spleen of CD1 mice, and suggests the importance of mouse strain, route of administration, and doses, for future studies focusing on the potential toxic effects of aluminum-based adjuvants. http://www.ncbi.nlm.nih.gov/pubmed/26384437 “Concerns regarding vaccine safety have emerged following reports of potential adverse events in both humans and animals. This study confirms the striking biopersistence of alum. It points out an unexpectedly delayed diffusion of the adjuvant in lymph nodes and spleen of CD1 mice ...” “The well-recognized manifestations of systemic aluminum toxicity include fracturing osteomalacia, dialysis encephalopathy, and microcytic hypochromic anemia. More recently, aluminum loading has been demonstrated in premature infants receiving intravenous fluid therapy.” American Academy Of Pediatrics • December 2015 Committee on Nutrition Aluminum Toxicity in Infants and Children Abstract During the last 15 years, accumulating evidence has implicated aluminum in disorders associated with chronic renal failure.1-6 The well-recognized manifestations of systemic aluminum toxicity include fracturing osteomalacia, dialysis encephalopathy, and microcytic hypochromic anemia. More recently, aluminum loading has been demonstrated in premature infants receiving intravenous fluid therapy.7 Although the clinical importance of this finding is unclear, it warrants careful attention. The association between aluminum excess and neurologic dysfunction, which has been reported in patients with chronic renal failure, suggests the possibility that aluminum overload may contribute to the pathogenesis of CNS damage in the sick premature infant.7,8 Aluminum Exposure Aluminum, which is the most abundant metal in the earth’s crust, is ubiquitous in its distribution.7 There is constant exposure to this element through ingestion of water and food and exposure to dust particles.10 Because aluminum sulfate (alum) is used as a flocculating agent in the purification of municipal water supplies, drinking water may contain high levels of aluminum (up to 1,000 μg/L). Aluminum cans, containers, and cooking utensils, as well as aluminum-containing medications, are also potential sources of oral intake of aluminum. Increase in aluminum intake as a result of transfer through the skin is probably negligible; however, exposure is common due to use of aluminum in deodorants.10 Some inhaled aluminum is retained in pulmonary tissue and in the peribronchial lymph nodes, but it is largely excluded from other tissues. Pulmonary aluminum concentration increases with age; unlike aluminum levels in other tissues, the concentration in the lung does not correlate with that in other tissues. http://pediatrics.aappublications.org/content/78/6/1150 Springer Plus • 2015 The mechanisms of action of vaccines containing aluminum adjuvants: an in vitro vs in vivo paradigm Tirth Raj Ghimire Division of Veterinary and Primate Health Global Primate Network, Kathmandu, Nepal Department of Zoology, Birendra Multiple Campus Tribhuvan University, Chitwan, Nepal Abstract Adjuvants such as the aluminum compounds (alum) have been dominantly used in many vaccines due to their immunopotentiation and safety records since 1920s. However, how these mineral agents influence the immune response to vaccination remains elusive. Many hypotheses exist as to the mode of action of these adjuvants, such as depot formation, antigen (Ag) targeting, and the induction of inflammation. These hypotheses are based on many in vitro and few in vivo studies. Understanding how cells interact with adjuvants in vivo will be crucial to fully understanding the mechanisms of action of these adjuvants. Interestingly, how alum influences the target cell at both the cellular and molecular level, and the consequent innate and adaptive responses, will be critical in the rational design of effective vaccines against many diseases. Thus, in this review, mechanisms of action of alum have been discussed based on available in vitro vs in vivo evidences to date. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4406982/ “Adjuvants such as the aluminum compounds (alum) have been dominantly used in many vaccines due to their immunopotentiation and safety records since 1920s. However, how these mineral agents influence the immune response to vaccination remains elusive.” Chapter Four The Human Papilloma Virus Vaccine 2008 - 2015 Dr. Harper was the lead scientist for Mercks Gardasil vaccine. She explained in a presentation at the 4th International Public Conference on Vaccination in October of 2009 that the cervical cancer risk in the U.S. is already extremely low, and that vaccinations are unlikely to have any effect upon the rate of cervical cancer in the United States. In fact, 70% of all HPV infections resolve themselves without treatment in a year and the number rises to well over 90% in two years. Harper also mentioned the safety angle. All trials of the vaccines were done on children aged 15 and above, despite them currently being marketed for 9-year-olds. So far, 15,037 girls have reported adverse side effects from Gardasil alone to the Vaccine Adverse Event Reporting System (V.A.E.R.S.), and this number only reflects parents who underwent the hurdles required for reporting adverse reactions. At the time of writing, over 100 girls are officially known to have died from this vaccine. The reported side effects include Guillian Barré Syndrome (paralysis lasting for years, or permanently — sometimes eventually causing suffocation), lupus, seizures, blood clots, brain inflammation and more. Parents are usually not made aware of these risks. Dr. Harper, the vaccine developer, claimed that she was speaking out, so that she might finally be able to sleep at night. “About eight in every ten women who have been sexually active will have H.P.V. at some stage of their life. Normally there are no symptoms, and in 98 per cent of cases it clears itself.” - Dr. Diane Harper Spanish attorney Don Manuel Saez Ochoa filed a criminal complaint against Merck-Sanofi Pasteur Laboratories and the Spanish National Health Authorities in the Spanish courts in June of 2014. The complaint alleges that Merck failed to use an inert placebo during clinical trials thereby manipulating data and thus Gardasil was marketed under false pretences. Merck-Sanofi Pasteur and Spain’s National and Regional (La Rioja) health authorities are charged with the following: • fraudulent marketing and/or administration of an inadequately tested vaccine; • failure to inform the public about the potential risks of using Gardasil; • clear infringement of the right to informed consent; • ignoring new medical conditions in those who used Gardasil despite the similarity of their symptoms and the relatively short period of time between vaccine administration and the onset of symptoms; • ignoring established and new scientific evidence illustrating the potential harmful effects of Gardasil ingredients and manufacturing methods; • callous disregard for those suffering new medical conditions post-Gardasil; • failure to inform the public that HPV infections are simply one of the risk factors involved in the development of cervical cancer; • failure to inform the public that 90% of all HPV infections clear on their own without medical intervention; • failure to inform the publlic about alternative methods of controlling cervical cancer; • and criminal liability for the injuries resulting from the administration of Gardasil. Thousands of young women around the world are finding themselves in the same position. They have gone from being happy, active, and healthy to facing a multitude of autoimmune problems and neurological disorders. For them, the ‘possible’ adverse effects of Gardasil have become an all too harsh and brutal reality. It is time for those responsible to be held accountable for their actions. Criminal prosecution is quite possibly the only way to accomplish that goal. Perhaps six to twelve years in prison would remind those responsible what it means to conduct yourself in an ethical manner. Perhaps they would remember that their first duty is to maintain the public health, not destroy it. On July 30, the Judge decided to open criminal proceedings and an investigation of the facts. The first criminal case in Spain regarding Gardasil injuries and potential criminal liability now begins. Canadian Medical Association Journal • September 2008 The human papillomavirus vaccine and risk of anaphylaxis Neal A. Halsey, MD From the Institute for Vaccine Safety Johns Hopkins Bloomberg School of Public Health Baltimore, Md. Abstract In this issue of CMAJ, Brotherton and colleagues1 report a comprehensive investigation revealing higher than expected rates of apparent anaphylaxis following vaccination with the quadrivalent human papillomavirus (HPV) vaccine in Australian children. The cause of these reactions remains somewhat unclear and needs further investigation. Of note, rates of anaphylaxis, if confirmed, may not be as high in other populations. Further investigations may assist in clarifying differences between the Australian study and other reports. The HPV vaccine is associated with high rates of fainting in adolescents, which can result in serious head injuries. These adverse events emphasize the need for recommendations to keep adolescents and children under close observation (preferably sitting) for at least 15 minutes after vaccination. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2527389/ “The HPV vaccine is associated with high rates of fainting in adolescents, which can result in serious head injuries.” Pharmacotherapy • September 2008 Development of unilateral cervical and supraclavicular lymphadenopathy after human papilloma virus vaccination Author information Studdiford J1, Lamb K, Horvath K, Altshuler M, Stonehouse A. Department of Family and Community Medicine Jefferson University Hospital Philadelphia Pennsylvania 19107, USA Abstract A 26-year-old woman developed significant unilateral anterior cervical and supraclavicular lymphadenopathy 3 days after receiving her first dose (of a total of three doses) of human papilloma virus (HPV) vaccine. She had no history of lymphadenopathy after other previous immunizations, and had received no vaccines other than HPV at that time. The left-sided lymphadenopathy developed after she was vaccinated in the left deltoid muscle. The spatial and temporal relationships between the appearance of the lymphadenopathy and receipt of the vaccine in the absence of other causal agents strongly suggest that the HPV vaccine was the causal agent. Use of the Naranjo adverse drug reaction probability scale indicated that the HPV vaccine was a probable (score of 6) cause of the patient’s adverse reaction. The patient received her second dose of the HPV vaccine 2 months later without further lymphadenopathy. To prevent unnecessary lymph node biopsies and patient concern, clinicians should be aware that lymphadenopathy may occur after HPV vaccination. http://www.ncbi.nlm.nih.gov/pubmed/?term=18752390 “clinicians should be aware that lymphadenopathy may occur after HPV vaccination.” Multiple Sclerosis • January 2009 CNS demyelination and quadrivalent HPV vaccination Author information Sutton I1, Lahoria R, Tan I, Clouston P, Barnett M. Department of Neurology St Vincent’s Hospital Darlinghurst, New South Wales Australia Abstract Vaccination is generally considered safe in patients with multiple sclerosis (MS). We report five patients who presented with multifocal or atypical demyelinating syndromes within 21 days of immunization with the quadrivalent human papilloma virus (HPV) vaccine, Gardasil. Although the target population for vaccination, young females, has an inherently high risk for MS, the temporal association with demyelinating events in these cases may be explained by the potent immuno-stimulatory properties of HPV virus-like particles which comprise the vaccine. A prospective casecontrol study of patients with MS or clinically isolated demyelinating syndromes receiving the Gardasil vaccine may provide relevant safety data in this population. http://www.ncbi.nlm.nih.gov/pubmed/?term=18805844 “We report five patients who presented with multifocal or atypical demyelinating syndromes within 21 days of immunization with the quadrivalent human papilloma virus (HPV) vaccine, Gardasil ... association with demyelinating events in these cases may be explained by the potent immuno-stimulatory properties of HPV virus-like particles which comprise the vaccine.” Obstetrics & Gynecology • February 2009 Cervical cancers after human papillomavirus vaccination Author information Beller U1, Abu-Rustum NR. Abstract BACKGROUND Current randomized clinical trials have shown that the quadrivalent human papillomavirus (HPV) vaccine can reduce the morbidity of precancerous lesions associated with HPV infection of vaccine-related subtypes. However, to date, there is no definite evidence showing the vaccine reduces the incidence of invasive cervical carcinoma. CASES We present two cases—one young, vaccinated woman who developed cervical carcinoma that was unrelated to HPV and another who developed cervical carcinoma secondary to infection with an HPV subtype not covered by the vaccine. Both patients were treated successfully and remained well without evidence of cancer. CONCLUSION Long-term follow-up data are needed to evaluate the prophylactic effectiveness of the current HPV vaccine. These cases could represent non-vaccine-related HPV infections. Young women must be thoroughly counseled about the efficacy and limitations of the vaccine and about continuing lifelong screening even after vaccination. http://www.ncbi.nlm.nih.gov/pubmed/?term=19155953 “However, to date, there is no definite evidence showing the vaccine reduces the incidence of invasive cervical carcinoma.” Vaccine • August 2009 Quadrivalent Human Papillomavirus recombinant vaccine associated lipoatrophy “Involutional lipoatrophy, a loss of subcutaneous fat, may be Author information idiopathic, associated with inflammatory skin conditions, or Ojaimi S1, Buttery JP, Korman TM. Department of Infectious Diseases Monash Medical Centre, Clayton, Monash University 246 Clayton Rd, Clayton, Victoria, Australia samojaimi@yahoo.com.au Abstract Involutional lipoatrophy, a loss of subcutaneous fat, may be idiopathic, associated with inflammatory skin conditions, or trauma, and has also been reported following injections of medications including insulin, corticosteroids and penicillin. There have also been reports in association with Diptheria Pertussis Tetanus (DPT) vaccine. We report on two cases of lipoatrophy associated with the new Quadrivalent Human Papillomavirus (HPV) recombinant vaccine (Gardasil). http://www.ncbi.nlm.nih.gov/pubmed/19555713 trauma, and has also been reported following injections of medications including insulin, corticosteroids and penicillin. There have also been reports in association with Diptheria Pertussis Tetanus (DPT) vaccine. We report on two cases of lipoatrophy associated with the new Quadrivalent Human Papillomavirus (HPV) recombinant vaccine (Gardasil).” 4th International Public Conference on Vaccination • October 2nd through 4th, 2009 No actual evidence that the vaccine can prevent any cancer Dr. Diane Harper Lead Vaccine Researcher Merck Gardasil And Cervarix Vaccines Abstract Dr. Diane Harper was the lead researcher in the development of the human papilloma virus vaccines, Gardasil and Cervarix. She is the latest to come forward and question the safety and effectiveness of these vaccines. She made the surprising announcement at the 4th International Public Conference on Vaccination, which took place in Reston, Virginia on Oct. 2nd through 4th, 2009. Her speech was supposed to promote the Gardasil and Cervarix vaccines, but she instead turned on her corporate bosses in a very public way. When questioned about the presentation, audience members remarked that they came away feeling that the vaccines should not be used. “I came away from the talk with the perception that the risk of adverse side effects is so much greater than the risk of cervical cancer, I couldn’t help but question why we need the vaccine at all.” – Joan Robinson Dr. Harper explained in her presentation that the cervical cancer risk in the U.S. is already extremely low, and that vaccinations are unlikely to have any effect upon the rate of cervical cancer in the United States. In fact, 70% of all H.P.V. infections resolve themselves without treatment in a year, and the number rises to well over 90% in two years. Harper also mentioned the safety angle. All trials of the vaccines were done on children aged 15 and above, despite them currently being marketed for 9-year-olds. So far, 15,037 girls have reported adverse side effects from Gardasil alone to the Vaccine Adverse Event Reporting System (V.A.E.R.S.), and this number only reflects parents who underwent the hurdles required for reporting adverse reactions. At the time of writing, 44 girls are officially known to have died from these vaccines. The reported side effects include Guillian Barré Syndrome (paralysis lasting for years, or permanently — sometimes eventually causing suffocation), lupus, seizures, blood clots, and brain inflammation. Parents are usually not made aware of these risks. Dr. Harper, the vaccine developer, claimed that she was speaking out, so that she might finally be able to sleep at night. “About eight in every ten women who have been sexually active will have H.P.V. at some stage of their life. Normally there are no symptoms, and in 98 per cent of cases it clears itself. But in those cases where it doesn’t, and isn’t treated, it can lead to pre-cancerous cells which may develop into cervical cancer.” - Dr. Diane Harper One must understand how the establishment’s word games are played to truly understand the meaning of the above quote, and one needs to understand its unique version of “science”. When they report that untreated cases “can” lead to something that “may” lead to cervical cancer, it really means that the relationship is merely a hypothetical conjecture that is profitable if people actually believe it. In other words, there is no demonstrated relationship between the condition being vaccinated for and the rare cancers that the vaccine might prevent, but it is marketed to do that nonetheless. In fact, there is no actual evidence that the vaccine can prevent any cancer. From the manufacturers own admissions, the vaccine only works on 4 strains out of 40 for a specific venereal disease that dies on its own in a relatively short period, so the chance of it actually helping an individual is about about the same as the chance of him being struck by a meteorite. Why do nine-year-old girls need vaccinations for extremely rare and symptomless venereal diseases that the immune system usually kills anyway? http://www.whydontyoutrythis.com/2013/07/the-lead-vaccine-developer-comes-clean-so-she-can-sleep-at-night.html Dermatology • July 2010 The quadrivalent human papillomavirus vaccine: erythema multiforme and cutaneous side effects after administration Author information Pérez-Carmona L1, Aguayo-Leiva I, González-García C, Jaén-Olasolo P. Ramón y Cajal Hospital Madrid, Spain lpcarmona@hotmail.com Abstract The quadrivalent human papillomavirus (qHPV) vaccine, the first vaccine for use in the prevention of cervical cancer and condyloma acuminatum, was approved in June 2006. In 2008, the mass media reported suspected links between the qHPV vaccine and serious adverse events; however, several studies have found that the vaccine is safe and the main adverse events are mild local reactions. Erythema multiforme (EM) is an acute self-limited cutaneous or mucocutaneous syndrome characterized by the abrupt onset of symmetric target lesions. The clinical manifestations and histological features of EM, Stevens-Johnson syndrome and toxic epidermal necrolysis show considerable overlap, and they are classically considered to represent a spectrum of skin disorders. We present a case of EM following qHPV vaccination to review the cutaneous side effects of this vaccine and the possibility of more serious side effects with the administration of booster doses. http://www.ncbi.nlm.nih.gov/pubmed/?term=20861606 “We present a case of Erythema multiforme following qHPV vaccination to review the cutaneous side effects of this vaccine and the possibility of more serious side effects with the administration of booster doses.” Journal Of Vaccines & Vaccination • November 2010 Review of Gardasil Author information Harper DM1, Vierthaler SL, Santee JA. Professor of Medicine, Director Center of Excellence in Women’s Health University of Missouri-Kansas City School of Medicine Departments of Biomedical and Health Informatics Obstetrics and Gynecology and Community and Family Medicine Abstract Human papillomavirus (HPV) is necessary for the development of cervical cancer. Cervical cancer is the second most common cancer in women worldwide but 80% occurs in developing countries, not countries with Pap screening programs. Pap screening programs in industrialized countries have reduced the incidence of cervical cancer to 4-8/100,000 women. HPV vaccines may be a promising strategy for cervical cancer in women without access to screening programs. In industrialized countries, the benefit of HPV vaccines focuses on individual abnormal Pap test reduction not cancer prevention. The focus of this review is to cover the side effects of Gardasil in perspective with the limited population benefit cervical cancer reduction in countries with organized Pap screening programs. In addition, information about Gardasil benefits, risks and unknowns for individual patient decision making for vaccination is presented. Gardasil offers protection against CIN 2+ lesions caused by HPV 16/18 and against genital warts caused by HPV 6/11 for at least 5 years. Combining Gardasil with repeated cytology screenings may reduce the proportion of abnormal cytology screens and hence reduce the associated morbidity with the subsequent colposcopies and excisional procedures. http://www.ncbi.nlm.nih.gov/pubmed/23805398 “Pap screening programs in industrialized countries have reduced the incidence of cervical cancer to 4-8/100,000 women. HPV vaccines may be a promising strategy for cervical cancer in women without access to screening programs.” Dermatology • November 2010 Erythema multiforme following vaccination for human papillomavirus Author information Katoulis AC1, Liakou A, Bozi E, Theodorakis M, Alevizou A, Zafeiraki A, Mistidou M, Stavrianeas NG. National and Kapodistrian University of Athens Medical School, 2nd Department of Dermatology and Venereology Attikon General University Hospital, Athens, Greece alexanderkatoulis @ yahoo.co.uk Abstract Erythema multiforme (EM) is an acute self-limited immune-mediated reaction manifested by target skin lesions with mucous membrane involvement. The most common causes are infections and drugs. Vaccinations have been reported as a triggering factor, and they may be a frequent cause of EM in childhood. A 19-year-old female developed several target lesions of the hands and feet 10 days after the second dose of human papillomavirus (HPV) vaccine. Clinico-histologically, a diagnosis of EM minor was made. Treatment with topical corticosteroids and oral antihistamines resulted in complete clearance of the rash. Four months later, she received the last booster dose of the vaccine. A few subtle lesions appeared and disappeared spontaneously after a few days. Gardasil is a non-infectious vaccine, developed for the prevention of cervical cancer, precancerous genital lesions and genital warts. It delivers the major capsid (L1) protein of HPV types 6, 11, 16 and 18. Mild local reactions are the main adverse events. The only serious events are very rare cases of anaphylaxis. In our patient, the temporal relationship between the development of EM and the vaccination suggests that the HPV vaccine probably was the causal agent. This is the first published case of EM following HPV vaccination. http://www.ncbi.nlm.nih.gov/pubmed/?term=19887766 “In our patient, the temporal relationship between the development of Erythema multiforme and the vaccination suggests that the HPV vaccine probably was the causal agent. This is the first published case of Erythema multiforme following HPV vaccination.” Vaccine • January 2011 Guillain-Barré syndrome after Gardasil vaccination: data from Vaccine Adverse Event Reporting System 2006-2009 Author information Souayah N1, Michas-Martin PA, Nasar A, Krivitskaya N, Yacoub HA, Khan H, Qureshi AI. Department of Neurology University of Medicine and Dentistry of New Jersey Newark, NJ 07103, USA souayani@umdnj.edu “The estimated weekly reporting rate of post-Gardasil Guillain-Barré Syndrome within the first 6 weeks (6.6 per 10,000,000) was higher than that of the general population, and higher than post-Menactra and post-influenza vaccinations.” Abstract Using data from Vaccine Adverse Event Reporting System, we identified 69 reports of Guillain-Barré Syndrome (GBS) after Gardasil vaccination that occurred in the United States between 2006 and 2009. The onset of symptoms was within 6 weeks after vaccination in 70% of the patients in whom the date of vaccination was known. The estimated weekly reporting rate of post-Gardasil GBS within the first 6 weeks (6.6 per 10,000,000) was higher than that of the general population, and higher than post-Menactra and post-influenza vaccinations. Further prospective active surveillance for accurate ascertainment and identification of high-risk groups of GBS after Gardasil vaccination is warranted. http://www.ncbi.nlm.nih.gov/pubmed/?term=20869467 [for every 100 million women vaccinated it is known and recognized that there will be an estimated 66 cases of collateral damage in the form of Guillain-Barré Syndrome] Vaccine • June 2011 Autoimmune hepatitis type 2 following anti-papillomavirus vaccination in a 11-year-old girl Author information Della Corte C1, Carlucci A, Francalanci P, Alisi A, Nobili V. Unit of Liver Research Department of Pathology Bambino Gesù Children’s Hospital IRCCS, P.le S. Onofrio 4, 00165 Rome, Italy claudia.dellacorte@opbg.net Abstract In the last years numerous reports describing a possible association between administration of vaccines and development of autoimmune phenomena and overt autoimmune disease were published. Possible mechanisms of induction of autoimmune phenomena by vaccines and their excipients are probably similar to those implicated in induction by infectious agents. Here we report the case of an 11-year-old girl who developed autoimmune hepatitis type II after four weeks from vaccination against human papillomavirus. The possible relationships between the use of adjuvated vaccine against papillomavirus and autoimmune hepatitis are discussed. Although we do not provide evidence for a causal link, we suggest that the occurrence of the autoimmune hepatitis may be related to the stimulation of immune system by adjuvated-vaccine, that could have triggered the disease in a genetically predisposed individual. Therefore a monitoring of liver function test following administration of vaccine against papillomavirus may be useful in adolescent girl with signs of hepatopathy, as jaundice, dark urine or hepatomegaly, to early identify and to promptly treat autoimmune liver disorders. http://www.ncbi.nlm.nih.gov/pubmed/?term=21596082 “In the last years numerous reports describing a possible association between administration of vaccines and development of autoimmune phenomena and overt autoimmune disease were published.” Lupus • February 2012 Systemic lupus erythematosus following HPV immunization or infection? Author information Soldevilla HF1, Briones SF, Navarra SV. 1University of Santo Tomas, Manila, Philippines helmar_110576@yahoo.com Abstract BACKGROUND AND PURPOSE The link between autoimmunity and infectious agents has been strongly suggested by reports of lupus or lupus-like syndromes following immunization. This report describes three patients with either newly diagnosed systemic lupus erythematosus (SLE) or SLE flare, following vaccination for human papilloma virus (HPV). CASE 1: A 17-year-old female completed two doses of HPV vaccine uneventfully. Two months later, she developed arthralgias with pruritic rashes on both lower extremities, later accompanied by livedo reticularis, bipedal edema with proteinuria, anemia, leucopenia, hypocomplementemia and high titers of anti-nuclear antibody (ANA) and anti-double-stranded DNA (anti-dsDNA). Kidney biopsy showed International Society of Nephrology/Renal Pathology Society Class III lupus nephritis. She was started on high dose steroids followed by pulse cyclophosphamide therapy protocol for lupus nephritis, and subsequently went into remission. CASE 2: A 45-year-old housewife, previously managed for 11 years as having rheumatoid arthritis, had been in clinical remission for a year when she received two doses of HPV immunization. Four months later, she developed fever accompanied by arthritis, malar rash, oral ulcers, recurrent ascites with intestinal pseudo-obstruction, and behavioral changes. Cranial MRI showed vasculitic lesions on the frontal and parietal lobes. Laboratory tests showed anemia with leucopenia, hypocomplementemia, proteinuria, ANA positive at 1:320, and antibodies against dsDNA, Ro/SSA, La/SSB and histone. She improved following pulse methylprednisolone with subsequent oral prednisone combined with hydroxychloroquine. CASE 3: A 58-year-old housewife diagnosed with SLE had been in clinical remission for 8 years when she received two doses of HPV immunization. Three months later, she was admitted to emergency because of a 1-week history of fever, malar rash, easy fatigability, cervical lymph nodes, gross hematuria and pallor. Laboratory exams showed severe anemia, thrombocytopenia, active urine sediments, and hypocomplementemia. Despite pulse steroid therapy, blood transfusions, intravenous immunoglobulin and aggressive resuscitative measures, she expired a day after hospital admission. SUMMARY These cases narrate instances of the onset or exacerbation of lupus following HPV immunization suggesting adjuvant-induced autoimmunity. On the other hand, there are reports of higher incidence of HPV infection in SLE, with the infection per se possibly contributing to disease activity. Thus, the benefit of HPV immunization may still outweigh the risk among these individuals. http://www.ncbi.nlm.nih.gov/pubmed/?term=22235047 “These cases narrate instances of the onset or exacerbation of lupus following HPV immunization suggesting adjuvant-induced autoimmunity.” American Journal Of Public Health • May 2012 Pharmaceutical companies’ role in state vaccination policymaking: the case of human papillomavirus vaccination Author information Mello MM1, Abiola S, Colgrove J. Harvard School of Public Health, Boston, MA, USA mmello@hsph.harvard.edu Abstract OBJECTIVES We sought to investigate roles that Merck & Co Inc played in state human papillomavirus (HPV) immunization policymaking, to elicit key stakeholders’ perceptions of the appropriateness of these activities, and to explore implications for relationships between health policymakers and industry. “Most stakeholders METHODS We used a series of state case studies combining data from key informant interviews with analysis of media reports and archival materials. We interviewed 73 key informants in 6 states that were actively engaged in HPV vaccine policy deliberations. acceptable in principle, RESULTS Merck promoted school-entry mandate legislation by serving as an information resource, lobbying legislators, drafting legislation, mobilizing female legislators and physician organizations, conducting consumer marketing campaigns, and filling gaps in access to the vaccine. Legislators relied heavily on Merck for scientific information. Most stakeholders found lobbying by vaccine manufacturers acceptable in principle, but perceived that Merck had acted too aggressively and nontransparently in this case. CONCLUSIONS Although policymakers acknowledge the utility of manufacturers’ involvement in vaccination policymaking, industry lobbying that is overly aggressive, not fully transparent, or not divorced from financial contributions to lawmakers risks undermining the prospects for legislation to foster uptake of new vaccines. http://www.ncbi.nlm.nih.gov/pubmed/?term=22420796 found lobbying by vaccine manufacturers but perceived that Merck had acted too aggressively and nontransparently in this case.” American Journal Of Public Health • September 2012 Who Profits From Uncritical Acceptance of Biased Estimates of Vaccine Efficacy and Safety? Lucija Tomljenovic, PhD and Christopher A. Shaw, PhD At the time of the writing, Lucija Tomljenovic and Christopher A. Shaw were with the Neural Dynamics Research Group University of British Columbia, Vancouver, Canada Abstract We read with great interest the analysis by Mello et al.1 on how Merck & Co., Inc. (Merck) influenced state human papillomavirus (HPV) vaccination policymaking. The exclusive reliance on Merck for scientific information on behalf of the legislators is unfortunate, especially in the light of independent research which has repeatedly warned that drug companies may manipulate clinical trial designs and subsequent data analysis and reporting to make their drugs look better and safer.2–4 Indeed, careful scrutiny of Gardasil clinical trials shows that their design, as well as data reporting and interpretation, were largely inadequate.4–6 Given this, the widespread public optimism regarding Gardasil’s clinical benefits appears to rest on an extremely weak base built on a number of untested assumptions and significant misinterpretation of factual evidence. For example, the claim that Gardasil vaccination will result in approximately 70% reduction of cervical cancers7,8 is made despite the fact that the clinical trial data have not demonstrated to date that the vaccine has actually prevented a single case of cervical cancer (let alone cervical cancer death),4 nor that the current overly optimistic surrogate marker–based extrapolations are justified.6 A second equally fallacious claim is that lifelong protection arises from three vaccine doses,7,8 although clinical trial follow-up data do not extend beyond five years.9 The third claim is that Gardasil may induce only minor side effects of negligible clinical importance,7,8 although such conclusions are only supported by highly flawed safety trials design.4,10 Additionally, we note evidence of biased and selective reporting of results from clinical trials, that is, exclusion of particular vaccine efficacy figures from peerreviewed publications, such as those related to study subgroups in which efficacy might be lower or even negative.4,5 All of the above issues suggest that the information presented by Merck to the public and the various state legislators concerning Gardasil safety and true prophylactic value were incomplete and inaccurate and thus inevitably misleading, particularly in light of data from various vaccine safety surveillance systems and case reports that continue to raise significant concerns regarding the safety of Gardasil (Table 1).4 Keeping in mind that “the primary interest of a pharmaceutical company is developing and selling pharmaceutical product,”1 one must ask whether rational vaccine policy decisions should be based on conclusions derived from an uncritical acceptance of flawed vaccine safety and efficacy estimates provided by the vaccine manufacturer. Failure to adhere to principles of evidence-based medicine with respect to Gardasil promotion and vaccination policymaking inevitably raises the question of whether we have learned anything from the Vioxx debacle. Full Report with References: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3482043/ Age-Adjusted Rate Of Adverse Reactions (ADRs) Related To Gardasil Compared With All Other Vaccines In The United States Reported To The Vaccine Adverse Event Reporting System (VAERS) As Of March 25th, 2012. Event Gardasil All Vaccines Gardasil % All Serious Deaths Life-Threatening Permanently Disabled Prolonged Hospitalization Emergency Room Visit 14,616 1,272 37 289 468 172 6,892 31,713 2,077 58 444 572 229 12,927 46.1 61.2 63.8 65.1 81.2 75.1 53.3 Note: Compared with all other vaccines, Gardasil alone is associated with >60% of all serious Adverse Reactions (including 63.8% of all deaths and 81.2% cases of permanent disability) in females younger than 30 years. In context, while females in this age group have a near-zero risk of dying from cervical cancer, they are faced with a risk of dying and a permanently disabling condition from a vaccine that has not prevented a single case of cervical cancer thus far. For a vaccine with uncertain benefits designed to prevent a disease that is preventable through Papanicolaou screening combined with the loop electrosurgical excision procedure, which together carry no such risks, the potental for harm to those vaccinated should be negligible. It is not. “In context. while females in this age group have a near-zero risk of dying from cervical cancer, they are faced with a risk of dying and a permanently disabling condition from a vaccine that has not prevented a single case of cervical cancer thus far. For a vaccine with uncertain benefits designed to prevent a disease that is preventable through Papanicolaou screening combined with the loop electrosurgical precision procedure, which together carry no such risks, the potential for harm to those vaccinated should be negligible.” BMJ Case Report • September 2012 Premature ovarian failure 3 years after menarche in a 16-year-old girl following human papillomavirus vaccination Author information Little DT1, Ward HR. Department of General Practice North Bellingen Medical Services, Bellingen, Australia dradford@wirefree.net.au Abstract Its occurrence raises important questions about causation, which may signal other systemic concerns. This patient presented with amenorrhoea after identifying a change from her regular cycle to irregular and scant periods following vaccinations against human papillomavirus. She declined the oral contraceptives initially prescribed for amenorrhoea. The diagnostic tasks were to determine the reason for her secondary amenorrhoea and then to investigate for possible causes of the premature ovarian failure identified. Although the cause is unknown in 90% of cases, the remaining chief identifiable causes of this condition were excluded. Premature ovarian failure was then notified as a possible adverse event following this vaccination. The young woman was counselled regarding preservation of bone density, reproductive implications and relevant follow-up. This event could hold potential implications for population health and prompts further inquiry. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4543769/ “Premature ovarian failure in a well adolescent is a rare event. This patient presented with amenorrhoea after identifying a change from her regular cycle to irregular and scant periods following vaccinations against human papillomavirus. This event could hold potential implications for population health and prompts further inquiry.” Journal of Internal Medicine Volume 272, Issue 5, pages 514–515 • November 2012 tion [6]. This outcome suggests that rather than preventing future cases of cervical cancer, Gardasil, at best, may only be effective in postponing them. Letter to the Editor In addition, unlike screening and the loop electrosurgical excision procedure (LEEP), Gardasil offers no therapeutic benefits as it cannot cause regression of pre-existing HPV-16/18 infections or associated lesions. On the contrary, Gardasil may exacerbate cervical cancer disease in women with pre-existing HPV-6/11/16/18 infections [5]. It thus appears that the current widespread optimism regarding the putative long-term benefits of HPV vaccination has only been made possible by invalid and premature extrapolations from such often inadequate surrogate markers [3, 9, 10]. As recently noted by Gerhardus and Razum [9], the, ‘unwarranted confidence in the new [HPV] vaccines led to the impression that there was no need to actually evaluate their effectiveness’. No autoimmune safety signal after vaccination with quadrivalent HPV vaccine Gardasil? L. Tomljenovic and C. A. Shaw Dear sir, Recently, the Journal of Internal Medicine published a study by Chao et al. [1] on autoimmune conditions following the routine use of Gardasil, which failed to identify any significant autoimmune safety concerns. This study was conducted in collaboration between two managed care organizations, Kaiser Permanente Southern California (KPSC) and Kaiser Permanente Northern California (KPNC), as a postlicensure commitment to the FDA, the European Medicines Agency (EMA) and other regulatory authorities to help evaluate the autoimmune safety of the vaccine. In particular, Chao et al. [1] noted that ‘well-designed postlicensure safety studies for newly approved vaccines facilitate proper evaluation of their autoimmune safety’ [emphasis added]. We certainly do agree with the authors that such studies are needed for determining whether or not new vaccines have adequate safety profiles. The study population for the autoimmune surveillance by the Kaiser’s research team thus included 189 629 women of diverse ethnical and socio-economic background, 99% of whom were in the recommended age range for HPV vaccination (9–26 years) [1]. Nonetheless, two potential biases might have influenced the outcome of the safety analysis conducted by the authors. First, the study included all women who received at least one dose of Gardasil, thus making this particular population sample less sensitive for the detection of serious adverse reactions (ADRs), as such events may be expected to occur less frequently if fewer doses of the vaccine are administered. As the authors did not report how many women actually completed the recommended three-dose HPV vaccination regimen, it is impossible to know what proportion of the study population was actually at high risk from vaccine-related serious ADRs. Secondly, the Safety Review Committee (SRC) that reviewed all safety data included a general paediatrician/clinical epidemiologist, a perinatologist/teratologist, a vaccinologist, a paediatric rheumatologist and a pharmacoepidemiologist [1]. In view of the fact that the autoimmune conditions of interest to be examined by this expert Committee included (i) rheumatologic/autoimmune disorders, (ii) autoimmune endocrine conditions and (iii) autoimmune neurological/ophthalmic disorders [1]; the question must be asked about why the Kaiser’s research team failed to recruit an expert panel with similar expertise if, in fact, the study aimed to facilitate proper evaluation of autoimmune safety for Gardasil? It is thus surprising to note the absence of an immunologist/autoimmunologist, neurologist and ophthalmologist from the SRC especially because such experts were in fact present at a later stage, in the analysis of case reports selected by the SRC [1]. As demonstrated repeatedly in the scientific literature, inadequately designed research cannot be used to reliably evaluate the safety of any drug [2,3]. We have previously pointed out to existing HPV vaccine-related safety concerns as well as uncertainties about the efficacy of HPV vaccination against actual cervical cancer incidence [3, 4]. Whilst results from clinical trials show that Gardasil can reduce the incidence of a subset of abnormal CIN 2/3+ cytologies (i.e. those related to HPV-16/18) in women with no pre-existing HPV infections [5], the vaccine is unlikely to reduce the overall frequency of cervical cancers (at least not beyond what Pap screening has already accomplished) [6, 7], yet this is the primary aim for which the vaccine was developed [8]. Furthermore, current data show that antibodies against HPV-18 after Gardasil fall rapidly, with 35% of women having no measurable antibody titres by 5 years postinjec- On the other hand, abundant evidence now exists that HPV vaccines can cause serious adverse events, including death and long-term disabling autoimmune conditions [3, 6]. Moreover, because currently there are no active surveillance programs for monitoring vaccine safety outcomes anywhere in the world, the true rate of serious ADRs following Gardasil remains unknown. In context, whilst 12-year-old preadolescents are at zero risk of dying from cervical cancer, they are faced with a risk of death and a permanently disabling lifelong autoimmune or neurodegenerative condition from a vaccine that thus far has not prevented a single case of cervical cancer, let alone cervical cancer death. For vaccines with uncertain benefits designed to prevent a disease that is already preventable by Pap screening and LEEP, both of which carry no such risks, the potential for harm to those vaccinated should be negligible [3, 4]. Conflict of interest statement Authors LT and CAS conducted a histological analysis of autopsy brain samples from a Gardasil-suspected death case http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2796.2012.02551.x/full “the vaccine is unlikely to reduce the overall frequency of cervical cancers (at least not beyond what Pap screening has already accomplished), yet this is the primary aim for which the vaccine was developed. Furthermore, current data show that antibodies against HPV-18 after Gardasil fall rapidly, with 35% of women having no measurable antibody titres by 5 years postinjection. This outcome suggests that rather than preventing future cases of cervical cancer, Gardasil, at best, may only be effective in postponing them.” The Journal Of Law, Medicine & Ethics • Fall 2012 Too fast or not too fast: the FDA’s approval of Merck’s HPV vaccine Gardasil Author information Tomljenovic L1, Shaw CA. University of British Columbia Abstract There are not many public health issues where views are as extremely polarized as those concerning vaccines, and Merck’s HPV vaccine Gardasil is a case in point. Ever since gaining the FDA’s approval in 2006, Merck has been heavily criticized for their overly aggressive marketing strategies and lobbying campaigns aimed at promoting Gardasil as a mandatory vaccine. Subsequently, questions have been raised as to whether it was appropriate for vaccine manufacturers to partake in public health policies when their conflicts of interests are so obvious. Some of their advertising campaign slogans, such as “cervical cancer kills x women per year” and “your daughter could become one less life affected by cervical cancer,” seemed more designed to promote fear rather than evidence-based decision making about the potential benefits of the vaccine. Although, conflicts of interests do not necessarily mean that the product itself is faulty, marketing claims should be carefully examined against factual science data. Currently Gardasil vaccination is strongly recommended by the U.S. and other health authorities while public concerns about safety and efficacy of the vaccine appear to be increasing. This discrepancy leads to some important questions that need to be resolved. The current review examines key issues of this debate in light of currently available research evidence. http://www.ncbi.nlm.nih.gov/pubmed/23061593 “Some of their advertising campaign slogans, such as “cervical cancer kills x women per year” and “your daughter could become one less life affected by cervical cancer,” seemed more designed to promote fear rather than evidence-based decision making about the potential benefits of the vaccine.” Pharmaceutical Regulatory Affairs • 2012 Death after Quadrivalent Human Papillomavirus (HPV) Vaccination: Causal or Coincidental? Lucija Tomljenovic1* and Christopher A Shaw1,2,3 1. Department of Ophthalmology and Visual Sciences, University of British Columbia, Canada 2. Program in Experimental Medicine, University of British Columbia, Canada 3. Program in Neuroscience, University of British Columbia, Canada Abstract Background The proper understanding of a true risk from vaccines is crucial for avoiding unnecessary adverse reactions (ADRs). However, to this date no solid tests or criteria have been established to determine whether adverse events are causally linked to vaccinations. “Our study suggests that HPV vaccines Objectives This research was carried out to determine whether or not some serious autoimmune and neurological ADRs following HPV vaccination are causal or merely coincidental and to validate a biomarker-based immunohistochemical (IHC) protocol for assessing causality in case of vaccination-suspected serious adverse neurological outcomes. inherent risk for triggering potentially fatal containing HPV-16L1 antigens pose an autoimmune vasculopathies.” Results In both cases, the autopsy revealed no anatomical, microbiological nor toxicological ndings that might have explained the death of the individuals. In contrast, our IHC analysis showed evidence of an autoimmune vasculitis potentially triggered by the cross-reactive HPV-16L1 antibodies binding to the wall of cerebral blood vessels in all examined brain samples. We also detected the presence of HPV-16L1 particles within the cerebral vasculature with some HPV-16L1 particles adhering to the blood vessel walls. HPV-18L1 antibodies did not bind to cerebral blood vessels nor any other neural tissues. IHC also showed increased T-cell signalling and marked activation of the classical antibody-dependent complement pathway in cerebral vascular tissues from both cases. This pattern of complement activation in the absence of an active brain infection indicates an abnormal triggering of the immune response in which the immune attack is directed towards self-tissue. Conclusions Our study suggests that HPV vaccines containing HPV-16L1 antigens pose an inherent risk for triggering potentially fatal autoimmune vasculopathies. Practice implications Cerebral vasculitis is a serious disease which typically results in fatal outcomes when undiagnosed and left untreated. The fact that many of the symptoms reported to vaccine safety surveillance databases following HPV vaccination are indicative of cerebral vasculitis, but are unrecognized as such (i.e., intense persistent migraines, syncope, seizures, tremors and tingling, myalgia, locomotor abnormalities, psychotic symptoms and cognitive de cits), is a serious concern in light of the present findings. It thus appears that in some cases vaccination may be the triggering factor of fatal autoimmune/neurological events. Physicians should be aware of this association. Full Report: http://sanevax.org/wp-content/uploads/2012/10/Tomljenovic-Shaw-Gardasil-Causal-Coincidental-2167-7689-S12-001.pdf Current Pharmaceutical Design • 2013 Human papillomavirus (HPV) vaccines as an option for preventing cervical malignancies: (how) effective and safe? Author information Tomljenovic L1, Spinosa JP, Shaw CA. Neural Dynamics Research Group Department of Ophthalmology and Visual Sciences University of British Columbia 828 W. 10th Ave, Vancouver, BC, V5Z 1L8, Canada lucijat77@gmail.com Abstract We carried out a systematic review of HPV vaccine pre- and post-licensure trials to assess the evidence of their effectiveness and safety. We find that HPV vaccine clinical trials design, and data interpretation of both efficacy and safety outcomes, were largely inadequate. Additionally, we note evidence of selective reporting of results from clinical trials (i.e., exclusion of vaccine efficacy figures related to study subgroups in which efficacy might be lower or even negative from peer-reviewed publications). Given this, the widespread optimism regarding HPV vaccines long-term benefits appears to rest on a number of unproven assumptions (or such which are at odd with factual evidence) and significant misinterpretation of available data. For example, the claim that HPV vaccination will result in approximately 70% reduction of cervical cancers is made despite the fact that the clinical trials data have not demonstrated to date that the vaccines have actually prevented a single case of cervical cancer (let alone cervical cancer death), nor that the current overly optimistic surrogate marker-based extrapolations are justified. Likewise, the notion that HPV vaccines have an impressive safety profile is only supported by highly flawed design of safety trials and is contrary to accumulating evidence from vaccine safety surveillance databases and case reports which continue to link HPV vaccination to serious adverse outcomes (including death and permanent disabilities). We thus conclude that further reduction of cervical cancers might be best achieved by optimizing cervical screening (which carries no such risks) and targeting other factors of the disease rather than by the reliance on vaccines with questionable efficacy and safety profiles. http://www.ncbi.nlm.nih.gov/pubmed/23016780 “We carried out a systematic review of HPV vaccine preand post-licensure trials to assess the evidence of their effectiveness and safety. We find that HPV vaccine clinical trials design, and data interpretation of both efficacy and safety outcomes, were largely inadequate. Given this, the widespread optimism regarding HPV vaccines long-term benefits appears to rest on a number of unproven assumptions (or such which are at odd with factual evidence) and significant misinterpretation of available data. Likewise, the notion that HPV vaccines have an impressive safety profile is only supported by highly flawed design of safety trials and is contrary to accumulating evidence from vaccine safety surveillance databases and case reports which continue to link HPV vaccination to serious adverse outcomes (including death and permanent disabilities).” Infectious Agents & Cancer • 2013 HPV vaccines and cancer prevention, science versus activism Lucija Tomljenovic,1 Judy Wilyman,2 Eva Vanamee,3 Toni Bark,4 and Christopher A Shaw1 1. Neural Dynamics Research Group Vancouver General Hospital Research Pavilion University of British Columbia, 828 W. 10th Ave Vancouver, BC, V5Z 1L8, Canada 2. School of Social Sciences Media and Communication University of Wollongong, Wollongong 2522, Australia 3. Department of Structural and Chemical Biology Mount Sinai School of Medicine, 1425 Madison Ave Rm 1623, New York, NY, 10029, USA 4. School of Public Health-Healthcare Emergency Management Boston University, Boston, MA, 02118, USA Abstract The rationale behind current worldwide human papilloma virus (HPV) vaccination programs starts from two basic premises, 1) that HPV vaccines will prevent cervical cancers and save lives and, 2) have no risk of serious side effects. Therefore, efforts should be made to get as many pre-adolescent girls vaccinated in order to decrease the burden of cervical cancer. Careful analysis of HPV vaccine pre- and post-licensure data shows however that both of these premises are at odds with factual evidence and are largely derived from significant misinterpretation of available data. Letter The recent Editorial by Silvia de Sanjosé* [1] is problematic from a variety of perspectives. Mainly, it attempts to portray a complex issue as a simple dichotomy between supposedly unjustified “anti-HPV vaccine activism” and alleged absolute science which has presumably provided indisputable evidence on HPV vaccine safety and efficacy. In spite of much unwarranted and premature optimism, the fact is however that HPV vaccines have not thus far prevented a single case of cervical cancer (let alone cervical cancer death). Instead, what the clinical trials have shown is that HPV vaccines can prevent some of the pre-cancerous CIN 2/3 lesions associated with HPV-16 and HPV-18 infection, a large fraction of which would spontaneously resolve regardless of the vaccination status [24]. For example, in adolescent women aged 13 to 24 years, 38% of CIN 2 resolve after one year, 63% after two and 68% after three years [5]. Moreover, the validity of CIN 2 being a cancer precursor is questionable due to high misclassification rates and poor intra- and inter-observer reproducibility in diagnosis, as well as high regression rates [6-9]. According to Castle et al. [7] CIN 2 is the least reproducible of all histopathologic diagnoses and may in part reflect sampling error. While CIN 3 is a more reliable marker for cancer progression than CIN 2, the use of this marker is not without caveats [2,10]. Indeed, the optimistic assumption that HPV vaccination (even if proven effective against cervical cancer as claimed), will result in 70% reduction of cervical cancers appears to be largely based on premature, exaggerated and invalid surrogate marker-based extrapolations [2,11]. Crucially, these assumptions failed to take into account several important real-world factors such as: (1) reliability of surrogate-markers (i.e., whether they can accurately measure what they are purport to measure); (2) efficacy against oncogenic HPV strains not covered by the vaccine; (3) possibility of increased frequency of infections with these types; (4) efficacy in women acquiring multiple HPV types; (5) effects in women with pre-existing HPV infections It is also noteworthy that Merck’s HPV vaccine Gardasil received priority Fast Track approval by the U.S. Food and Drug Administration (FDA) after a 6-month review process, despite the fact that it failed (and still continues to fail) to meet a single one of the four criteria required by the FDA for Fast Track approval. Gardasil is demonstrably neither safer nor more effective than Pap screening combined with the loop electrosurgical excision procedure (LEEP) in preventing cervical cancers, nor can it improve the diagnosis of serious cervical cancer outcomes [12]. In this regard, Gerhardus and Razum have recently noted that the “…unwarranted confidence in the newHPVvaccines led to the impression that there was no need to actually evaluate their effectiveness” [11]. Similarly, the notion that HPV vaccines have an impressive safety profile can only be supported by highly flawed design of safety trials [2,13] and is contrary to accumulating evidence from vaccine safety surveillance databases and case reports which continue to link HPV vaccination to serious adverse outcomes (including death and permanent disabilities) [2,4,14]. For example, compared to all other vaccines in the U.S. vaccination schedule, Gardasil alone is associated with 61% of all serious adverse reactions (including 63.8% of all deaths and 81.2% cases of permanent disability) in females younger than 30 years of age [12]. Although a report to a vaccine safety surveillance system does not by itself prove that the vaccine caused an adverse reaction, the unusually high frequency of adverse reactions related to HPV vaccines reported worldwide, as well as their consistent pattern (i.e. nervous system-related disorders rank the highest in frequency), points to a potentially causal relationship [2]. Furthermore, matching the data from vaccine surveillance databases is an increasing number of case reports documenting similar serious adverse reactions associated with HPV vaccine administration, with nervous system and autoimmune disorders being the most frequently reported in the medical literature [15-24]. In summary, the optimistic claims that HPV vaccines will prevent cervical cancers and save lives, and that they are extremely safe, rest on assumptions which are misinterpreted and presented to the public as factual evidence. We thus conclude that further reduction of cervical cancers might be best achieved by optimizing cervical screening (which carries no serious health risks) and targeting other factors of the disease rather than by the reliance on vaccines with questionable efficacy and safety profiles [2,25]. To those who wish to promote HPV vaccination as a means for reducing cervical cancer burden, perhaps the following should be asked: 1. HPV vaccines have not been demonstrated to prevent any cervical cancers so why are they being promoted as cervical cancer vaccines? 2. If the majority of HPV infections and a great proportion of pre-cancerous lesions clear spontaneously and without medical treatment and are thus not a reliable indication of cancer later in life, then how can these end-points be used as a reliable indicator of the number of cervical cancer cases that will be prevented by HPV vaccines? 3. How can the clinical trials make an accurate estimate of the risk associated with HPV-vaccines if they are methodologically biased to produce type-2 errors (false negatives [2,4,13])? [continued next page] 4. Can a passive monitoring system such as that used by most vaccine surveillance systems world-wide allow the medical regulatory agencies to make accurate estimates on the real frequency of HPV-vaccine related adverse reactions? 5. Can an accurate estimate of the real frequency of HPV-vaccine related adverse reactions be made if appropriate follow-up and thorough investigation of suspected vaccine related ADRs is not conducted but instead, these cases are a-priori dismissed as being unrelated to the vaccine? 6. Why are women not informed of the fact that in some circumstances (i.e., prior exposure to vaccine-targeted and non-targeted HPV types), HPV vaccination may accelerate the progression of cervical abnormalities [4,2628]? “ Gardasil is demonstrably neither safer nor more effective than Pap screening 7. How can women make a fully informed decision about whether or not to consent to vaccination if crucial information regarding HPV vaccine efficacy and safety is not being disclosed to them? combined with the loop electrosurgical 8. Should the medical health regulators and authorities rely solely on data provided by the vaccine manufacturers to make vaccine-policy decisions and recommendations [12,29]? excision procedure (LEEP) in preventing Competing interests The authors declare that they have no conflict of interests Authors’ contributions LT was involved in choosing the topic and drafting the initial manuscript. CAS, JW, EV and TB were involved in critically revising the manuscript and additional content. The authors have read and approved the manuscript. This work was supported by the Dwoskin and Katlyn Fox Family Foundations. Full Report with References http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3565961/ “As for all vaccines, and in particular for newly marketed ones, the surveillance of adverse events represents an essential step in the evaluation of a vaccination programme.” [because all vaccines are part of a long-term human population-wide medical experiment] cervical cancers, nor can it improve the diagnosis of serious cervical cancer outcomes.” Annals Of Medicine • March 2013 Human papillomavirus (HPV) vaccine policy and evidence-based medicine: are they at odds? Author information Tomljenovic L1, Shaw CA. Neural Dynamics Research Group Department of Ophthalmology and Visual Sciences University of British Columbia, 828 W. 10th Ave Vancouver, BC, V5Z 1L8, Canada lucijat77@gmail.com Abstract All drugs are associated with some risks of adverse reactions. Because vaccines represent a special category of drugs, generally given to healthy individuals, uncertain benefits mean that only a small level of risk for adverse reactions is acceptable. Furthermore, medical ethics demand that vaccination should be carried out with the participant’s full and informed consent. This necessitates an objective disclosure of the known or foreseeable vaccination benefits and risks. The way in which HPV vaccines are often promoted to women indicates that such disclosure is not always given from the basis of the best available knowledge. For example, while the world’s leading medical authorities state that HPV vaccines are an important cervical cancer prevention tool, clinical trials show no evidence that HPV vaccination can protect against cervical cancer. Similarly, contrary to claims that cervical cancer is the second most common cancer in women worldwide, existing data show that this only applies to developing countries. In the Western world cervical cancer is a rare disease with mortality rates that are several times lower than the rate of reported serious adverse reactions (including deaths) from HPV vaccination. Future vaccination policies should adhere more rigorously to evidence-based medicine and ethical guidelines for informed consent. http://www.ncbi.nlm.nih.gov/pubmed/22188159 “... while the world’s leading medical authorities state that HPV vaccines are an important cervical cancer prevention tool, clinical trials show no evidence that HPV vaccination can protect against cervical cancer. Similarly, contrary to claims that cervical cancer is the second most common cancer in women worldwide, existing data show that this only applies to developing countries. In the Western world cervical cancer is a rare disease with mortality rates that are several times lower than the rate of reported serious adverse reactions (including deaths) from HPV vaccination.” Clinical Rheumatology • September 2013 Human papillomavirus vaccine and systemic lupus erythematosus Author information Gatto M1, Agmon-Levin N, Soriano A, Manna R, Maoz-Segal R, Kivity S, Doria A, Shoenfeld Y. Department of Medicine University of Padova, Padova, Italy Abstract To investigate the association between human papillomavirus (HPV) vaccination and autoimmune manifestations compatible with systemic lupus erythematosus (SLE) or SLE-like disease, the medical history of six women who presented with SLE or SLE-like disease following HPV immunization was collected. Data regarding type of vaccine, number of immunization, family and personal, clinical and serological features, as well as response to treatments were analyzed. In the reported cases, several common features were observed, such as personal or familial susceptibility to autoimmunity or adverse response to a prior dose of the vaccine, both of which may be associated with a higher risk of post-vaccination autoimmunity. Favorable response to immunosuppressant was observed in all patients. In the current study, a temporal association between immunization with HPV vaccine and the appearance of a spectrum of SLE-like conditions is reported. Additionally, among the patients described, several common features were observed that may enable better identification of subjects at risk. Further studies are required to assess the safety of immunization with the HPV vaccine in patients with autoimmune-rheumatic diseases or in subject at risk of autoimmunity as well as the potential beneficial effect of preventive immunosuppressants. http://www.ncbi.nlm.nih.gov/pubmed/23624585 “In the current study, a temporal association between immunization with HPV vaccine and the appearance of a spectrum of SLE-like conditions is reported. Additionally, among the patients described, several common features were observed that may enable better identification of subjects at risk.” Neuropediatrics • October 2013 Association of acute cerebellar ataxia and human papilloma virus vaccination: a case report Author information Yonee C1, Toyoshima M, Maegaki Y, Kodama Y, Hayami H, Takahashi Y, Kusunoki S, Uchibori A, Chiba A, Kawano Y. Department of Pediatrics Graduate School of Medical and Dental Sciences Kagoshima University, Kagoshima City Kagoshima, Japan Abstract INTRODUCTION We report the case of a patient who developed symptoms of acute cerebellar ataxia (ACA) after administration of the human papilloma virus (HPV)-16/18 vaccine. PATIENT AND METHOD This patient developed symptoms of ACA, including nausea, vertigo, severe limb and truncal ataxia, and bilateral spontaneous continuous horizontal nystagmus with irregular rhythm, 12 days after administration of the HPV-16/18 AS04-adjuvanted cervical cancer vaccine. After this, the patient received methylprednisolone pulse and intravenous immunoglobulin (IVIG) therapies as well as immunoadsorption plasmapheresis. RESULTS Severe ACA symptoms did not improve after methylprednisolone pulse and IVIG therapies, but the patient recovered completely after immunoadsorption plasmapheresis. CONCLUSION This temporal association strongly suggests that ACA was induced by the vaccination. http://www.ncbi.nlm.nih.gov/pubmed/?term=23378179 “This temporal association strongly suggests that acute cerebellar ataxia was induced by the vaccination.” American Journal Of Reproductive Immunology • October 2013 Human papilloma virus vaccine and primary ovarian failure: another facet of the autoimmune/inflammatory syndrome induced by adjuvants Author information Colafrancesco S1, Perricone C, Tomljenovic L, Shoenfeld Y. Zabludowicz Center for Autoimmune Diseases Sheba Medical Center, Tel-Hashomer, Israel “We documented here the evidence Rheumatology Unit, Department of Internal Medicine and Medical Specialities Sapienza University of Rome, Rome, Italy of the potential of the HPV vaccine Abstract to trigger a life-disabling autoimmune condition. PROBLEM Post-vaccination autoimmune phenomena are a major facet of the autoimmune/inflammatory syndrome induced by adjuvants (ASIA) and different vaccines, including HPV, have been identified as possible causes. The increasing number of similar reports of METHOD OF STUDY The medical history of three young women who presented with secondary amenorrhea following HPV vaccination was collected. Data regarding type of vaccine, number of vaccination, personal, clinical and serological features, as well as response to treatments were analyzed. uncertainty of long-term clinical benefits of HPV RESULTS All three patients developed secondary amenorrhea following HPV vaccinations, which did not resolve upon treatment with hormone replacement therapies. In all three cases sexual development was normal and genetic screen revealed no pertinent abnormalities (i.e., Turner’s syndrome, Fragile X test were all negative). Serological evaluations showed low levels of estradiol and increased FSH and LH and in two cases, specific auto-antibodies were detected (antiovarian and anti thyroid), suggesting that the HPV vaccine triggered an autoimmune response. Pelvic ultrasound did not reveal any abnormalities in any of the three cases. All three patients experienced a range of common non-specific post-vaccine symptoms including nausea, headache, sleep disturbances, arthralgia and a range of cognitive and psychiatric disturbances. According to these clinical features, a diagnosis of primary ovarian failure (POF) was determined which also fulfilled the required criteria for the ASIA syndrome. warrants further rigorous inquiry.” CONCLUSION We documented here the evidence of the potential of the HPV vaccine to trigger a life-disabling autoimmune condition. The increasing number of similar reports of post HPV vaccine-linked autoimmunity and the uncertainty of long-term clinical benefits of HPV vaccination are a matter of public health that warrants further rigorous inquiry. http://www.ncbi.nlm.nih.gov/pubmed/23902317 post HPV vaccine-linked autoimmunity and the vaccination are a matter of public health that Current Drug Safety • March 2014 Human papilloma virus vaccine associated uveitis Author information Holt HD, Hinkle DM, Falk NS, Fraunfelder FT, Fraunfelder FW1. Lions Eye Institute, Albany Medical College, Slingerlands, New York, USA hncl1983@gmail.com Abstract PURPOSE To report a possible association between human papilloma virus (HPV) vaccination and uveitis. METHODS Spontaneous reports from the National Registry of Drug-Induced Ocular Side effects, World Health Organization and Food and Drug Administration were collected on uveitis associated with human papilloma virus vaccination. A MEDLINE search was performed using keywords “uveitis,” “iritis,” “iridocyclitis,” “human papilloma virus,” “Cervarix”, and “Gardasil.” MAIN OUTCOME MEASURES Data garnered from spontaneous reports included the age, gender, adverse drug reaction (ADR), date of administration, concomitant administration of other vaccinations, time until onset of ADR, other systemic reactions, and dechallenge and rechallenge data. RESULTS A total of 24 case reports of uveitis associated with human papilloma virus vaccination were identified, all cases were female, and the median age was 17. Median time from HPV vaccination to reported ADR was 30 days (range 0-476 days). DISCUSSION According to World Health Organization criteria, the relationship between human papilloma virus vaccination and uveitis is “possible.” Causality assessments are based on the time relationship of drug administration, uveitis development and rechallenge data. CONCLUSIONS Clinicians should be aware of a possible bilateral uveitis and papillitis following HPV vaccination. http://www.ncbi.nlm.nih.gov/pubmed/24191906 “A total of 24 case reports of uveitis associated with human papilloma virus vaccination were identified, all cases were female, and the median age was 17. According to World Health Organization criteria, the relationship between human papilloma virus vaccination and uveitis is “possible.” European Journal Of Neurology • September 2014 Postural tachycardia syndrome following human papillomavirus vaccination Author information Blitshteyn S. Department of Neurology State University of New York at Buffalo School of Medicine and Biomedical Sciences Buffalo, NY, USA Abstract BACKGROUND AND PURPOSE Postural tachycardia syndrome (POTS) is a heterogeneous disorder of the autonomic nervous system that may have an autoimmune etiology. METHODS Six patients who developed new onset POTS 6 days to 2 months following human papillomavirus vaccination are reported. RESULTS Three patients also had neurocardiogenic syncope, and three patients were diagnosed with possible small fiber neuropathy. Symptoms in all patients improved over 3 years with pharmacotherapy and non-pharmacological measures but residual symptoms persisted. Molecular mimicry with formation of cross-reacting autoantibodies to the potential targets of the autonomic ganglia, neurons, cardiac proteins or vascular receptors is considered as a possible pathogenesis of new onset POTS after immunization. CONCLUSION Correct diagnosis of POTS and awareness that POTS may occur after vaccination in young women is essential for prompt and effective management of this condition. http://www.ncbi.nlm.nih.gov/pubmed/24102827 “Six patients who developed new onset Postural tachycardia syndrome 6 days to 2 months following human papillomavirus vaccination are reported.” Journal Of Investigative Medicine High Impact Case Reports • October 2014 Adolescent Premature Ovarian Insufficiency Following Human Papillomavirus Vaccination: A Case Series Seen in General Practice Author information Little DT1, Ward HR2. 1. Bellingen District Hospital, Bellingen, New South Wales, Australia 2. University of New South Wales, Coffs Harbour, New South Wales, Australia Abstract Three young women who developed premature ovarian insufficiency following quadrivalent human papillomavirus (HPV) vaccination presented to a general practitioner in rural New South Wales, Australia. The unrelated girls were aged 16, 16, and 18 years at diagnosis. Each had received HPV vaccinations prior to the onset of ovarian decline. Vaccinations had been administered in different regions of the state of New South Wales and the 3 girls lived in different towns in that state. Each had been prescribed the oral contraceptive pill to treat menstrual cycle abnormalities prior to investigation and diagnosis. Vaccine research does not present an ovary histology report of tested rats but does present a testicular histology report. Enduring ovarian capacity and duration of function following vaccination is unresearched in preclinical studies, clinical and postlicensure studies. Postmarketing surveillance does not accurately represent diagnoses in adverse event notifications and can neither represent unnotified cases nor compare incident statistics with vaccine course administration rates. The potential significance of a case series of adolescents with idiopathic premature ovarian insufficiency following HPV vaccination presenting to a general practice warrants further research. Preservation of reproductive health is a primary concern in the recipient target group. Since this group includes all prepubertal and pubertal young women, demonstration of ongoing, uncompromised safety for the ovary is urgently required. This matter needs to be resolved for the purposes of population health and public vaccine confidence. http://www.ncbi.nlm.nih.gov/pubmed/26425627 “Three young women who developed premature ovarian insufficiency following quadrivalent human papillomavirus (HPV) vaccination presented to a general practitioner in rural New South Wales, Australia. The potential significance of a case series of adolescents with idiopathic premature ovarian insufficiency following HPV vaccination presenting to a general practice warrants further research. This matter needs to be resolved for the purposes of population health and public vaccine confidence.” Human Vaccines And Immunotherapeutics • 2014 Comparison of adaptive and innate immune responses induced by licensed vaccines for Human Papillomavirus Author information Herrin DM1, Coates EE, Costner PJ, Kemp TJ, Nason MC, Saharia KK, Pan Y, Sarwar UN, Holman L, Yamshchikov G, Koup RA, Pang YY, Seder RA, Schiller JT, Graham BS, Pinto LA, Ledgerwood JE. 1. Vaccine Research Center National Institute of Allergy and Infectious Disease National Institutes of Health; Bethesda, MD USA Abstract Two HPV virus-like particle (VLP) vaccines, HPV-16/18 (GlaxoSmithKline, Cervarix®) and HPV-6/11/16/18 (Merck, Gardasil®), are currently licensed in the United States. Given the similar antigenic content but different adjuvant formulations in the 2 vaccines, they provide an efficient method for evaluating adjuvants and comparing the kinetics of the innate and adaptive immune responses. We randomized women to receive either Cervarix® or Gardasil®, followed 6 month vaccination delivery schedules per manufacturer’s recommendations, and analyzed the humoral immune response, T cell response, and circulating plasma cytokine levels in response to vaccination. Cervarix® recipients had higher anti-HPV-16 antibody and neutralization titers at month 7, and elevated anti-HPV-18 antibody and neutralization titers at months 7 and 12. Antibody avidity was similar for the 2 vaccines. HPV-31 was the only phylogenetically related non-vaccine HPV type, for which there is evidence of cross-protection, to be cross-neutralized and only in response to Cervarix®. Comparing CD4+ T cell cytokine responses at month 12, there was a trend of increased levels of IL-2 and TNF-∼ in the Cervarix® groups versus the Gardasil® groups that was consistent across all 4 tested HPV types (16/18/33/45). Elevated levels of circulating plasma cytokine/chemokines were observed post first vaccination in Gardasil® recipients and proinflammatory cytokines were elevated following 1st and 3rd Cervarix® vaccinations. Cervarix® and Gardasil® are both highly immunogenic vaccines. Higher antibody levels and CD4 T cell responses were achieved with Cervarix® after 3 doses, although similar affinity maturation was measured for the 2 vaccines. The clinical implications of the differences in immune responses are unknown. http://www.ncbi.nlm.nih.gov/pubmed/?term=25483691 [proving vaccines are continuous, long-term human experiments] HPV vaccine is neither safe nor effective References The following letter to the editor of the Baltimore Sun, with references, was written by Emily Tarsell, LCPC, and Dr. William Reichel on August 9, 2015 1. Tomljenovic L, Shaw CA, Spinosa JP: Human Papillomavirus (HPV) Vaccines as an option for preventing cervical malignancies: (How) effective and safe? Curr Pharm Des 2012, :CPD-EPUB-20120924-13.Epub ahead of print. 2. Tomljenovic L, Shaw CA: Who profits from uncritical acceptance of biased estimates of vaccine efficacy and safety? Am J Public Health 2012, 102(9):e13–e14. 3. Tomljenovic L, Shaw CA: Human papillomavirus (HPV) vaccine policy and evidence-based medicine: are they at odds? Ann Med 2011, doi:10.3109/07853890.2 011.645353 4. Slade BA, Leidel L, Vellozzi C, et al. Postlicensure safety surveillance for quadrivalent human papillomavirus recombinant vaccine. JAMA. 2009; 302 (7): 750- 757. 5. Tomljenovic L, Wilyman J, Vanamee E, Bark T,Shaw CA. HPV vaccines and cancer prevention, science versus activism. Infectious Agents and Cancer 2013,8:6. http://www.infectagentscancer.com/content/8/1/6. 6. Vactruth. French Medical Doctors Say, “Delist & Suspend HPV Vaccines. December 28, 2011 http://www.medocean.re/2011/09/legardasil-a-l%E2%80%99as- semblee-nationale/.Accessed January 2012. 7. Sarojini N B, Sandhya Srinivasan, Madhavi Y, Srinivasan S, Anjali Shenoifie HPV Vaccine: Science, Ethics and Regulation. Economic & Political Weekly EPW november 27, 2010 vol xlv no 48. 8. Erickson N. Japan and the hpv vaccine controversy. www.sanevax.org. Accessed 4/29/2014. 9. Kyodo. Cervarix vaccine issues trigger health notice. Japan Times. June 15,2013. http://www.japantimes.co.jp/news/2013/06/15/national/cervix-vaccine-issues-trigger-health-notice/#.VMfXlWjF8fX. Accessed 4/29/2014. 10. Ministry of Health, Labor and Welfare. Shimbun A. Analysis: Experts at loss over pain from cervical cancer vaccination. Asia and Japan Watch. June 18, 2013. http://ajw.asahi.com/article/behind_news/social_a airs/AJ201306180057. Ac- cessed 1/27/15 11. Archive of proceedings and events regarding an investigation into hpv vaccines safety and efficacy by the Japanese Ministry of Health, Labor and Welfare. Medwatcher Japan. http://www.yakugai.gr.jp/en/activity/index.php?year=2014. Accessed 1/26/15. 12. Chustecka Z. Safety Profile of HPV Vaccines Under Review in Europe. Med- scape.July 13. 2015. http://www.medscape.com/ viewarticle/847841src=wnl_edit_ newsal&uac=148182AN&impID=759675&faf=1 Accessed July 20, 2015. 13. Lee, SH. Detection of human papillomavirus (HPV) L1gene DNA possibly bound to particulate aluminum adjuvant in the HPVvaccine Gardasil. Journal of Inorganic Biochemistry.117 (2012) 85-92. www.elsevier.com/locate/jinorgbio. 14. Shoenfeld Y, Agmon-Levin N. ‘ASIA’ – Autoimmune/in ammatory syndrome induced by adjuvants. Journal of Autoimmunity (2010), 2010; XXX: 1-5. 15. Tomljenovic L, Shaw CA. Mechanisms of Aluminum adjuvant toxicity and autoimmunity in pediatric populations. Lupus 2012; 21:223-230. 16. Shaw CA, Petrik MS. Aluminum hydroxide injections lead to motor de cits and motor neuron degeneration. J Inorg Biochem 2009; 103: 1555-1562. Dear Editor: Your recent article in The Baltimore Sun, Medicine Briefs for August 2, 2015, states that “not enough pediatricians are strongly recommending HPV vaccine.” It appears there are excellent medical and scientific reasons why many doctors do not. Since hpv vaccines were introduced seven years ago, it has been assumed that this vaccine will prevent cervical cancer. Yet it has never been demonstrated to prevent any cancer, cervical or otherwise (1, 2, 3). It has also been assumed for 7 years that this vaccine is safe. Yet there have been thousands of adverse event reports. The CDC itself admits there are 3x as many adverse events for the hpv vaccine Gardasil as there are for all other vaccines combined.(4) Compared to all other vaccines in the US schedule, Gardasil alone is associated with 61% of all serious adverse events including 63.8% of all deaths and 81.2% of all permanent disabilities in females under 30 years of age. (5) In fact, Japan, India and France have removed hpv vaccines from their recommended list due to safety and ef cacy concerns.(6, 7, 8, 11) Unethical practices and serious post hpv vaccination injuries and deaths prompted the Supreme Court of India to initiate an ongoing investigation of the Bill and Melin- da Gates Foundation. (7) The Health Welfare and Labor Ministry of Japan conducted a national inves- tigation regarding post hpv vaccine injuries in their country. The outcome was the removal of funding and removal of recommendations regarding hpv vaccines. (8, 9, 10, 11) They concluded that the harm experienced is overwhelmingly greater than the bene t expected. Prompted by medical reports of post hpv vaccination arrhythmia and motor neuron disabilities in children in Denmark, the European Medicines Agency is conducting an investigation of hpv injection adverse events. (12) Law suits for hpv injuries and deaths have also been led in Spain, France and Columbia. Some studies have linked serious hpv vaccine adverse events to the aluminum adjuvant which is a known neurotoxin. (13, 14, 15, 16) Yet the latest version of hpv vaccine, Gardasil 9, contains double the amount of aluminum adjuvant than its predecessor. We already have proven, safe and effective ways to prevent cervical cancer with pap screening which carries no serious health risk. So the doctors who do not recommend hpv vaccination are the ones who have done their research. The public should be grateful to those who have taken their oath seriously. Sincerely, “Since hpv vaccines were introduced seven years ago, it has been assumed that this vaccine will prevent cervical cancer. Yet it has never been demonstrated to prevent any cancer, cervical or otherwise. It has also been assumed for 7 years that this vaccine is safe. Yet there have been thousands of adverse event reports. The CDC itself admits there are 3x as many adverse events for the hpv vaccine Gardasil as there are for all William Reichel, MD Emily Tarsell, LCPC other vaccines combined.” Danish Medical Journal • April 2015 Suspected side effects to the quadrivalent human papilloma vaccine Author information Brinth L1, Theibel AC, Pors K, Mehlsen J. Koordinerende Forskningsenhed/Synkopecenteret Vej 3, Indgang 4, Frederiksberg Hospital, Nordre Fasanvej 57 2000 Frederiksberg, Denmark louise.schouborg.brinth@regionh.dk Abstract Introduction The quadrivalent vaccine that protects against human papilloma virus types 6, 11, 16 and 18 (Q-HPV vaccine, Gardasil) was included into the Danish childhood vaccination programme in 2009. During the past years, a collection of symptoms primarily consistent with sympathetic nervous system dysfunction have been described as suspected side effects to the Q-HPV vaccine. Methods We present a description of suspected side effects to the Q-HPV vaccine in 53 patients referred to our Syncope Unit for tilt table test and evaluation of autonomic nervous system function. Results All patients had symptoms consistent with pronounced autonomic dysfunction including different degrees of orthostatic intolerance, severe non-migraine-like headache, excessive fatigue, cognitive dysfunction, gastrointestinal discomfort and widespread pain of a neuropathic character. Conclusion We found consistency in the reported symptoms as well as between our findings and those described by others. Our findings neither confirm nor dismiss a causal link to the Q-HPV vaccine, but they suggest that further research is urgently warranted to clarify the pathophysiology behind the symptoms experienced in these patients and to evaluate the possibility and the nature of any causal link and hopefully establish targeted treatment options. http://www.ncbi.nlm.nih.gov/pubmed/25872549 “During the past years, a collection of symptoms primarily consistent with sympathetic nervous system dysfunction have been described as suspected side effects to the Q-HPV vaccine. All patients had symptoms consistent with pronounced autonomic dysfunction including different degrees of orthostatic intolerance, severe non-migraine-like headache, excessive fatigue, cognitive dysfunction, gastrointestinal discomfort and widespread pain of a neuropathic character.” Brain And Nerve • July 2015 Neurologic Complications in HPV Vaccination Author information Ikeda S. Department of Medicine (Neurology and Rheumatology) Shinshu University School of Medicine Japan Abstract A relatively high incidence of chronic limb pain, frequently complicated by violent, tremulous involuntary movements, has been noted in Japanese girls following human papillomavirus vaccination. The average incubation period after the first dose of the vaccine was 5.47 ± 5.00 months. Frequent manifestations included headaches, general fatigue, coldness of the feet, limb pain, and weakness. The skin temperature of the girls with limb symptoms was slightly lower in the fingers and moderately lower in the toes. Digital plethysmograms revealed a reduced peak of the waves, especially in the toes. Limb symptoms of the affected girls were compatible with the diagnostic criteria for complex regional pain syndrome. The Schellong test identified a significant number of patients with orthostatic hypotension and a few with postural orthostatic tachycardia syndrome. Electron-microscopic examinations of the intradermal nerves showed an abnormal pathology in the unmyelinated fibers in two of the three girls examined. The symptoms observed in this study can be explained by abnormal peripheral sympathetic responses. The most common previous diagnosis in the patients was psychosomatic disease. Recently, delayed manifestation of cognitive dysfunction in the post-vaccinated girls has attracted attention. The symptoms include memory loss and difficulty in reading textbooks and/or calculation. http://www.ncbi.nlm.nih.gov/pubmed/26160812 “A relatively high incidence of chronic limb pain, frequently complicated by violent, tremulous involuntary movements, has been noted in Japanese girls following human papillomavirus vaccination.” Expert Opinion On Drug Safety • July 2015 The safety of human papilloma virus-blockers and the risk of triggering autoimmune diseases Author information Baker B1, Eça Guimarães L, Tomljenovic L, Agmon-Levin N, Shoenfeld Y. The Zabludowicz Center for Autoimmune Diseases Chaim Sheba Medical Center, Tel-Hashomer 52621, Israel +972 3 5302652; +972 3 5352855 shoenfel@post.tau.ac.il Abstract INTRODUCTION With the safety of human papilloma virus vaccine (HPVv) being questioned, this article aims to assess the risks and benefits of the commercially available HPVv. Within the last decade, two vaccines (Gardasil and Cervarix) have been put on the market to prevent infection with the most oncogenic HPV subtypes. Both vaccines contain aluminum adjuvants that are meant to cause a hyper stimulated immune response to prevent HPV infection. AREAS COVERED The purpose of this paper is to consider the safety of these two vaccines based on the data from the U.S. Vaccine Adverse Event Reporting System (VAERS) and case reports. EXPERT OPINION The current HPVv are both effective and generally safe. However, it should be noted that autoimmune side effects have been reported in several studies. Further research should be done to understand the relationship between HPVv and autoimmunity. http://www.ncbi.nlm.nih.gov/pubmed/26216756 “However, it should be noted that autoimmune side effects have been reported in several studies. Further research should be done to understand the relationship between HPVv and autoimmunity.” Human Vaccines & Immunotherapy • October 2015 Compensation programs after withdrawal of the recommendation for HPV vaccine in Japan Author information Yuji K1, Nakada H2. 1. Project Division of International Advanced Medical Research The Institute of Medical Science, The University of Tokyo 4-6-1 Shirokanedai, Minatoku, Tokyo, Japan, 1088639 2. Research and Development Initiative Center National Cerebral and Cardiovascular Center Research Institute Suita City, Osaka, Japan nakad@ncvc.go.jp Abstract HPV vaccinations were recommended with the backing of a Japanese government subsidy program in 2010, and were included in the National Immunization Program in April 2013. However, the Ministry of Health, Labour, and Welfare withdrew the recommendation for the HPV vaccination in June 2013. We investigated HPV vaccine injury compensation programs for both the national and local governments. Approximately 3.38 million girls were vaccinated, and 2,584 complained of health problems. The majority of these received the vaccine shot as a non-routine vaccination. In total, 98 people developed health problems and applied for assistance from 2011 to 2014, but no cases have been processed since October 2014. Several local governments are providing their own compensation program for cases of vaccine adverse reactions, but the number is extremely low (16 of 1,741 municipalities and 1 of 47 prefectures). The local governments that are providing compensation are largely those where HPV vaccine victim support groups are prominent. The confusion regarding the national program for HPV vaccine injury was caused by the discrepancy between the compensation programs for those vaccinated under the immunization law and for those who received voluntary vaccinations. The establishment of a new compensation program might be key to finding a lasting resolution. http://www.ncbi.nlm.nih.gov/pubmed/26513303 HPV Vaccination Crisis In Japan link: http://www.researchgate.net/publication/279181953_HPV_vaccination_crisis_in_Japan “the Ministry of Health, Labour, and Welfare withdrew the recommendation for the HPV vaccination in June 2013.” Clinical Rheumatology • November 2015 HPV vaccination syndrome A questionnaire-based study Author information Martínez-Lavín M1, Martínez-Martínez LA2, Reyes-Loyola P2. 1. Departamento de Reumatología Instituto Nacional de Cardiología Ignacio Chávez Juan Badiano 1, 14080, Mexico City, Mexico drmartinezlavin@gmail.com. 2. Departamento de Reumatología Instituto Nacional de Cardiología Ignacio Chávez Juan Badiano 1, 14080, Mexico City, Mexico Abstract Isolated cases and small series have described the development of complex regional pain syndrome, postural orthostatic tachycardia, and fibromyalgia after human papillomavirus (HPV) vaccination. These illnesses are difficult to diagnose and have overlapping clinical features. Small fiber neuropathy and dysautonomia may play a major role in the pathogenesis of these entities. We used the following validated questionnaires to appraise the chronic illness that might appear after HPV vaccination: The 2010 American College of Rheumatology Fibromyalgia Diagnostic Criteria, COMPASS 31 dysautonomia questionnaire, and S-LANSS neuropathic pain form. These questionnaires and a “present illness” survey were emailed to persons who had the onset of a chronic ailment soon after HPV vaccination. Forty-five filled questionnaires from individuals living in 13 different countries were collected in a month’s period. Mean (±SD) age at vaccination time was 14 ± 5 years. Twenty-nine percent of the cases had immediate (within 24 h) post-vaccination illness onset. The most common presenting complaints were musculoskeletal pain (66 %), fatigue (57 %), headache (57 %), dizziness/vertigo (43 %), and paresthesias/allodynia (36 %). Fifty-three percent of affected individuals fulfill the fibromyalgia criteria. COMPASS-31 score was 43 ± 21, implying advanced autonomic dysfunction. Eighty-three percent of the patients who had ongoing pain displayed S-LANSS values >12, suggesting a neuropathic component in their pain experience. After a mean period of 4.2 ± 2.5 years post-vaccination, 93 % of patients continue to have incapacitating symptoms and remain unable to attend school or work. In conclusion, a disabling syndrome of chronic neuropathic pain, fatigue, and autonomic dysfunction may appear after HPV vaccination. http://www.ncbi.nlm.nih.gov/pubmed/26354426 “Isolated cases and small series have described the development of complex regional pain syndrome, postural orthostatic tachycardia, and fibromyalgia after human papillomavirus (HPV) vaccination. In conclusion, a disabling syndrome of chronic neuropathic pain, fatigue, and autonomic dysfunction may appear after HPV vaccination.” Chapter Five 75 Years Of Vaccine Science 1939 - 2016 Both common observation and official statistics confirm that there have been dramatic increases in chronic physical and mental illnesses in American children, such as autism, asthma, and allergies since the introduction of the MMR vaccine in 1978. Government health officials have denied a relationship with vaccines, but U.S. Congressional hearings on vaccine safety (1999 to Dec. 2004) revealed a total absence of vaccine safety tests that would meet current scientific standards, so that it can be assumed that many vaccine reactions are taking place unrecognized. Prior to the introduction of vaccines, the Th1 cellular immune system of the gastrointestinal and respiratory systems served as the primary defense systems with the Th2 humoral immune system in the bone marrow, serving a secondary role. There is a school of thought that the “minor childhood diseases” of earlier times, including measles, mumps, chicken pox, and rubella, which involved the epithelial tissues of skin, respiratory, and/or gastrointestinal tracts, served a necessary purpose in challenging, strengthening, and establishing the dominance of the Th1 cellular immune system during early childhood. Current vaccines against these diseases, in contrast, being directed at stimulating antibody production in the bone marrow, are bypassing the cellular immune system and thereby tending to reverse the roles of the cellular and humoral systems, with the former suffering from a lack of challenge. In addition, the cellular immune system is being further compromised by the powerfully immunosuppressive effects of the MMR vaccine. The time is overdue to totally rethink and redirect our current childhood vaccine program. ~ Dr. Harold Buttram JAMA • Vol 112, No. 19 • May 13, 1939 Diphtheria immunity in Chicago by Herman N. Bundesen, MD., Sc.D., William I. Fishbein, MD., John L. White, MD Abstract Although diphtheria mortality and morbidity have been gradually decreasing in most parts of the United States for the past twenty-five years, they have not been reduced to the level which it was hoped would be attained. Antitoxin, control of carriers and the Schick test were important. The discovery of toxoid added new impetus to the efforts to control this disease. It was believed that the inoculation of a large proportion of the child population would result in almost complete eradication of diphtheria. The results obtained with the use of toxoid did not, however, approximate expectations. The present study explains to some extent this failure. http://jama.jamanetwork.com/article.aspx?articleid=288193&resultClick=3 “It was believed that the inoculation of a large proportion of the child population would result in almost complete eradication of diphtheria. The results obtained with the use of toxoid did not, however, approximate expectations. The present study explains to some extent this failure.” JAMA • Vol 114, No. 19 • May 11, 1940 Allergy induced by immunization with Tetanus Toxoid by Robert A. Cooke, MD., Stanley Hampton, MD., William B. Sherman, MD., Arthur Stull. Ph.D. Abstract A toxoid for the active immunization of human beings against tetanus infection has been developed within the past few years and its efficiency as a producer of tetanus antitoxin has been well established. It has followed directly in the wake of the development of diphtheria toxoid, and today a refined alum precipitated formaldehyde detoxified tetanus toxoid standardized under rules of the National Institute of Health is commercially available. It is not within the scope of this paper to discuss the aspects of its development or its antitoxin producing capacity, all of which may be found in such recent papers, with references, as those of Bergey and Etris,1 Jones and Moss,2 Hall,3 Gold4 and Cowles.5 http://jama.jamanetwork.com/article.aspx?articleid=1160278&resultClick=3 “It has followed directly in the wake of the development of diphtheria toxoid, and today a refined alum precipitated formaldehyde detoxified tetanus toxoid standardized under rules of the National Institute of Health is commercially available.” Pediatrics • April 1948 Encephalopathies Following Prophylactic Pertussis Vaccine Randolph K. Byers, Frederic C. Moll Abstract Inspection of the records of the Children’s Hospital for the past ten years has disclosed 15 instances in which children developed acute cerebral symptoms within a period of hours after the administration of pertussis vaccine. The children varied between 5 and 18 months in age and, in so far as it is possible to judge children of this age range, were developing normally according to histories supplied by their parents. None had had convulsions previously. Many different lots of vaccine, made by eight different manufacturers over a period of eight years, were implicated. The inoculations were given throughout the usual geographic range of children coming to this hospital. All but one, at the time of follow-up or death, showed evidence of impairment of the nervous system, which might still have been in the healing stage in three or four. During the same period about half as many children were seen in the hospital suffering from the encephalopathy secondary to smallpox vaccination, and about twice as many from the encephalopathy complicating pertussis itself. A variety of etiologic considerations were suggested by consideration of the reported cases and references to the literature. That constitutional factors may have been involved was suggested by both the preponderance of males as opposed to females, and by the high incidence of abnormalities of the nervous system in the family histories. The clinical course and cytologic abnormalities of spinal fluids found in acute cases indicated an encephalopathy. The literature suggested that this process might have resulted from either the activity of a specific toxin or from an antigen-antibody response. Against the former of these hypotheses was the unstable nature of the heretofore recognized toxins which could hardly survive in properly aged vaccines. The rapid onset of symptoms, occasionally within minutes of the first injection, seemed strong evidence against the second. The present study has left these etiologic considerations unanswered, but it has called attention to a risk of the prophylactic use of pertussis vaccine not hitherto recognized. In view of the impressive evidence of the effectiveness of prophylactic pertussis vaccine now accumulating, it seems likely that babies are safer vaccinated than not. Further studies should be made to prove this point definitely, for the encephalopathy following pertussis vaccine seems more devastating than the vast majority of the nervous lesions following the use of smallpox vaccine. http://pediatrics.aappublications.org/content/1/4/437?sid=0d16c0ef-0e60-4827-883e-d8993 3f51dfc&variant=abstract&sso=1&sso_redirect_count=5&nfstatus=401&nftoken=000000 00-0000-0000-0000-000000000000&nfstatusdescription=ERROR%3A%20No%20local% 20token&nfstatus=401&nftoken=00000000-0000-0000-0000-000000000000&nfstatusdesc ription=ERROR%3a+No+local+token “In view of the impressive evidence of the effectiveness of prophylactic pertussis vaccine now accumulating, it seems likely that babies are safer vaccinated than not. Further studies should be made to prove this point definitely, for the encephalopathy following pertussis vaccine seems more devastating than the vast majority of the nervous lesions following the use of smallpox vaccine.” JAMA • Vol 152, No. 14 • August 1, 1953 Precautions In Pediatric Immunization Procedures by Louis W. Sauer, M.D., Ph.D. Abstract During the past decade, the simultaneous immunization against diphtheria, tetanus, and pertussis has become quite well established on laboratory and clinical evidence. To retard the elimination of antigen (DTP) from the body and to enhance antitoxin and antibody development, various forms of aluminum have been used as adjuvant. Most private patients are now adequately protected by the customary primary series of three or four monthly doses, and subsequent recall (stimulating or booster) doses. Needless deaths due to pertussis are still occurring, however, in infants and children from families with low incomes and orphanages in congested cities and in rural areas. To reach these children, mass immunization clinics should function at well baby clinics, primary schools, and mobile units. The diverse difficulties encountered in the execution of these immunization procedures are problems due to earlier immunization, febrile reactions, alum cyst, postinoculation encephalopathy, paralytic poliomyelitis of the injected limb, and unfavorable results. http://jama.jamanetwork.com/article.aspx?articleid=287046&resultClick=3 “The diverse difficulties encountered in the execution of these immunization procedures are problems due to earlier immunization, febrile reactions, alum cyst, postinoculation encephalopathy, paralytic poliomyelitis of the injected limb, and unfavorable results.” “A cell line (MDCK) of dog kidney origin grows on a glass surface as a mosaic of epithelium with many multicellular hemispherical vesicles. Science • January 1969 Secretory activity and oncogenicity of a cell line (MDCK) derived from canine kidneyand A cell line (MDCK) of dog kidney origin grows on a glass surface as a mosaic of epithelium with many multicellular hemispherical vesicles. The cells lining the blisters actively secrete into the cyst cavities. Suspensions of these cells injected intravenously in the chick embryo produce brain metastases resembling adenocarcinoma. The cells lining the blisters actively secrete into the cyst cavities. Suspensions of these cells injected intravenously in the chick embryo produce brain metastases resembling adenocarcinoma.” [Editors Note: The MDCK (NBL-2) (ATCC® CCL-34™) cell line has been used since 1958 to produce influenza and other vaccines] http://www.sciencemag.org/content/163/3866/472.long Information on the MDCK cell line http://www.atcc.org/products/all/CCL-34.aspx [In a departure from the use of traditional egg-based vaccines the FDA approved Flucelvax for Novartis on November 20th, 2012. Flucelvax was the first mammalian cell-based influenza vaccine in the US. The Madin-Darby canine kidney cell line is cultured to produce the vaccine. The primary advantage of MDCK over traditional egg-based manufacturing is rapid growth.] “The observations of this study as well as those of similar studies suggest that vaccine failures contributed to the genesis of the epidemic.” Canadian Medical Association Journal • November 1975 Analysis of a measles epidemic: possible role of vaccine failures W. E. Rawls, M. L. Rawls, and M. A. Chernesky Abstract A measles epidemic occurred in the Greensville (Ont.) Unit schools during January and February 1975. There were 47 cases of measles in 403 students: 26 (55%) of the children had a history of being vaccinated and 18 (38%) had not been vaccinated. Among children known to have been vaccinated at less than 1 year of age 7 of 13 contracted measles, while among the 48 children who had not been vaccinated 18 contracted measles. The attack rate among vaccinees increased with increasing time since vaccination. The observations of this study as well as those of similar studies suggest that vaccine failures contributed to the genesis of the epidemic. It is recommended that all children initially vaccinated at less than 1 year of age should be revaccinated with live attenuated measles virus vaccine. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1956577/ Journal Of Experimental Medicine • September 1977 Autoimmunity to type II collagen an experimental model of arthritis Trentham DE, Townes AS, Kang AH. Abstract We have found that intradermal injection of native type II collagen extracted from human, chick or rat cartilage induces an inflammatory arthritis in approximately 40% of rats of several strains whether complete Freund’s adjuvant or incomplete Freund’s adjuvant is used. Type I or III collagen extracted from skin, cartilage proteoglycans and alpha1(II) chains were incapable of eliciting arthritis, as was type II collagen injected without adjuvant. The disease is a chronic proliferative synovitis, resembling adjuvant arthritis in rats and rheumatoid arthritis in humans. Native type II co-lagen modified by limited pepsin digestion still produces arthritis, suggesting that type-specific determinants residing in the helical region of the molecule are responsible for the induction of disease. Since homologous type II collagen emulsified in oil without bacterial preparations regularly causes the disease, this new animal model of arthritis represents a unique example of experimentally-inducible autoimmunity to a tissue component. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2180804/pdf/je1463857.pdf “this new animal model of arthritis represents a unique example of experimentally-inducible autoimmunity to a tissue component.” Gastroenterology • February 1980 HBe-Antigen in the course and prognosis of hepatitis B infection: a prospective study Schulman AN, Fagen ND, Brezina M, Silver H, Nitzze A, Morton D, Gitnick GL. Abstract The prognostic significance of the HBe-antigen (HBeAg) in the course and outcome of type B hepatitis was studied prospectively in 71 susceptible oncology patients. The patients had been exposed to tumor cell vaccines inadvertently contaminated with hepatitis B surface antigen (HBsAg)-containing plasma. Fortyfive patients (63%) were infected. These 45 showed three types of acute seroresponse: HBsAg and HBeAg, 28 patients (62%); HBsAg alone, 8 patients (18%); and a primary antibody to HBsAg (anti-HBs) response, 9 patients (20%). There was no significant difference in acute course and outcome between the two HBsantigenemic groups. All primary anti-HBs responders had asymptomatic infections. Seventeen patients receiving chemotherapy during the period of hepatitis B exposure were significantly more prone to symptomatic infection with acute HBs-antigenemia, and 2 of these patients developed chronic active hepatitis. The HBeAg is common early in acute hepatitis B among solid tumor patients and at this stage in disease has no prognostic significance independent of HBsAg. http://www.ncbi.nlm.nih.gov/pubmed/?term=7350048 “The patients had been exposed to tumor cell vaccines inadvertently contaminated with hepatitis B surface antigen-containing plasma. Forty-five patients (63%) were infected.” Reviews Of Infectious Diseases • May 1980 Vaccine adjuvants Edelman R. Abstract Nonreplicating, purified subunit or synthetic viral vaccines of the future are likely to be weak immunogens that will require immunopotentiation if they are to be effective. These marginal vaccines could be improved by combination with potent and safe immunologic adjuvants. The use of adjuvants should also reduce the amount of purified antigen required for successful immunization, thus making vaccine production more economical and more feasible. It may be possible to combine the recently developed relatively nontoxic synthetic immunoregulators of low molecular weight with antigens in order to modulate preselected compartments of the immune system. To date, the question of adjuvant safety has not been resolved and represents the major obstacle to the orderly development of adjuvanted vaccines. The fear of inducing cancer and other immediate or long-term perturbations of the immune system must be patently and rationally overcome by basic and applied experimentation and by the development of appropriate guidelines for studies in humans. http://www.ncbi.nlm.nih.gov/pubmed/?term=6997966 “Nonreplicating, purified subunit or synthetic viral vaccines of the future are likely to be weak immunogens that will require immunopotentiation if they are to be effective.” “These data suggest that Tween 80 has an effect on the Central Nervous System which could lead to misinterpretation of results in toxicology studies that use this compound as a dosage vehicle.” Life Sciences • June 1982 Effect of Tween 80 on exploratory behavior and locomotor activity in rats Brubaker CM, Taylor DH, Bull RJ. Abstract Exploratory behavior and locomotor activity is enhanced in male rat pups (aged 10 to 20 days) whose dams received a chronic dose (1.25 ml/l) of Tween 80 via their drinking water. This enhancement manifests itself during the diurnal period of the day. These data suggest that Tween 80 has an effect on the CNS which could lead to misinterpretation of results in toxicology studies that use this compound as a dosage vehicle. http://www.ncbi.nlm.nih.gov/pubmed/7202094 Biochimica et Biophysica Acta • October 1983 Effect of pertussis toxin on the hormonal regulation of cyclic AMP levels in hamster fat cells by Martínez-Olmedo MA, García-Sáinz JA. Abstract Pertussis toxin was purified approx. 1800-fold from pertussis vaccine. Administration of as little as 1 microgram of toxin/100 g body weight to hamsters markedly decreased the sensitivity of their adipocytes to agents that inhibit adenylate cyclase through receptor-mediated, GTP-dependent mechanisms such as alpha 2-adrenergic amines, prostaglandins, phenylisopropyladenosine and nicotinic acid. On the contrary, the inhibitory effect of 2’,5’-dideoxyadenosine on cyclic AMP accumulation was not affected by the toxin. Activation of adenylate cyclase by isoproterenol, ACTH or forskolin was not diminished by the toxin but the maximum cyclic AMP accumulation was consistently increased. Furthermore, the dose-response curves for ACTH and forskolin were clearly shifted to the left in adipocytes from toxin-treated hamsters as compared to control adipocytes. It is concluded that pertussis toxin blocks the transfer of inhibitory information from the receptors to adenylate cyclase. http://www.ncbi.nlm.nih.gov/pubmed/6313062 “It is concluded that pertussis toxin blocks the transfer of inhibitory information from the receptors to adenylate cyclase.” New England Journal Of Medicine • January 1984 Abnormal T-lymphocyte subpopulations in healthy subjects after tetanus booster immunization Eibl MM, Mannhalter JW, Zlabinger G. “By way of explanation, a vaccine safety test is one in which before-and-after vaccine tests are performed, specifically designed to test for possible adverse effects on the neurological, immunological, hematologic, genetic, and other systems of the body, in sufficient numbers of test subjects and controls to be statistically significant. As an example, in a little noted study from Germany by Eibl et al. [11], a significant, though temporary, drop of T-Helper lymphocytes was found in 11 healthy adults following routine tetanus booster vaccinations. Special concern rests in the fact that, in four of the subjects, T-helper lymphocytes fell to levels seen in active AIDS patients.” Report available for purchase: http://www.ncbi.nlm.nih.gov/pubmed/?term=6228737 “As an example, in a little noted study from Germany by Eibl et al. [11], a significant, though temporary, drop of T-Helper lymphocytes was found in 11 healthy adults following routine tetanus booster vaccinations. Special concern rests in the fact that, in four of the subjects, T-helper lymphocytes fell to levels seen in active AIDS patients.” “This outbreak demonstrates that transmission of measles can occur within a school population with a documented immunization level of 100%. This level was validated during the outbreak investigation.” CDC • June 22, 1984 MMWR Weekly From December 9, 1983, to January 13, 1984, 21 cases of measles occurred in Sangamon County, Illinois.* Nine of the cases were confirmed serologically. The outbreak involved 16 high school students, all of whom had histories of measles vaccination after 15 months of age documented in their school health records. Of the five remaining cases, four occurred in unvaccinated preschool children, two of whom were under 15 months of age, and one case occurred in a previously vaccinated college student (Figure 5). The affected high school had 276 students and was in the same building as a junior high school with 135 students. A review of health records in the high school showed that all 411 students had documentation of measles vaccination on or after the first birthday, in accordance with Illinois law. Measles vaccination histories were obtained from the school health records of all 276 senior high school students. Risk of infection was not significantly associated with type of vaccine, medical provider, age at most recent vaccination, or revaccination. All the students with measles had received their most recent vaccinations after 15 months of age. However, the measles attack rate increased with increasing years since most recent vaccination (p = 0.024) (Table 3). The attack rate was four times greater for students vaccinated 10 or more years before the outbreak than for students vaccinated more recently (p 0.05). When these data are corrected for the number of vaccinations, the trend was still observed and achieved a borderline level of statistical significance (p = 0.07). Age at first or last vaccination was not a confounding variable. The index patient, Student A, was a 17-year-old male in the 11th grade; he was present in school with a productive cough for 3 consecutive days before his onset of rash. The source of his infection was not identified. Nine students with first-generation cases developed onset of rash 10-14 days after exposure to Student A (Figure 5). The attack rate was 6% (16/276) for senior high school students and 0% (0/135) for junior high school students. The highest attack rate was 12% (9/74) for the 11th grade students (p 0.02). Repeated and close exposure to Student A was associated with a greater risk of illness (Table 4). The eight patients with first-generation cases who attended the high school were used to analyze the degree of exposure to Student A. The measles attack rate was 3% for students who did have classroom exposure to Student A versus 2% for those who did not. Moreover, the attack rate was 21% for students whom Student A identified as “close friends” from the school enrollment roster, compared with 2% for students not so identified (p 0.001). Editorial Note This outbreak demonstrates that transmission of measles can occur within a school population with a documented immunization level of 100%. This level was validated during the outbreak investigation. Previous investigations of measles outbreaks among highly immunized populations have revealed risk factors such as improper storage or handling of vaccine, vaccine administered to children under 1 year of age, use of globulin with vaccine, and use of killed virus vaccine (1-5). However, these risk factors did not adequately explain the occurrence of this outbreak. If waning immunity is not a problem, this outbreak suggests that measles transmission can occur within the 2%-10% of expected vaccine failures (5,7). However, transmission was not sustained beyond 36 days in this outbreak, and community spread was principally among unvaccinated preschool children. The infrequent occurrence of measles among highly vaccinated persons suggests that this outbreak may have resulted from chance clustering of otherwise randomly distributed vaccine failures in the community. That measles transmission can occur among vaccine failures makes it even more important to ensure persons are adequately vaccinated. Had there been a substantial number of unvaccinated or inadequately vaccinated students in the high school and the community, transmission in Sangamon County probably would have been sustained. http://www.cdc.gov/mmwr/preview/mmwrhtml/00000359.htm Acta Paediatrica Scandinavica • July 1984 Bordetella pertussis whole cell vaccines efficacy and toxicity Trollfors B. “The pertussis-associated mortality is currently very low in the industrialised countries and no Abstract The literature concerning efficacy and side effects of pertussis vaccines is reviewed. With few exceptions, most vaccines induce a protective immunity lasting for 2 to 5 years. The large-scale use of pertussis vaccines has markedly contributed to the decrease in pertussis morbidity in small children but in some countries the incidence has increased in older children. Not even countries with immunisation rates of 90-95% have managed to eradicate pertussis or prevent disease in infants below the age of immunisation. The pertussis-associated mortality is currently very low in the industrialised countries and no differences can be discerned when countries with high, low and zero immunisation rates are compared. Local and benign systemic reactions are commonly seen after immunisation. The vaccines also sometimes cause convulsions, a shock-like state and, rarely, serious neurological reactions. http://www.ncbi.nlm.nih.gov/pubmed/6380211 differences can be discerned when countries with high, low and zero immunisation rates are compared. Local and benign systemic reactions are commonly seen after immunisation. The vaccines also sometimes cause convulsions, a shock-like state and, rarely, serious neurological reactions.” Journal Of Toxicology And Environmental Health • 1984 Formaldehyde and hepatotoxicity: a review Beall JR, Ulsamer AG. Abstract Exposure to formaldehyde appears to be associated with hepatoxicity in many species, including humans, following injection, ingestion, or inhalation. Macroscopic, microscopic, and biochemical manifestations in the liver include alterations in weight, centrilobular vacuolization, focal cellular necrosis, and increased alkaline phosphatase concentrations. Time-related changes in the pattern of the effects are suggested as one goes from acute exposure by inhalation at greater concentrations to repeated exposure at lesser concentrations. Although the hepatic changes are generally not extensive and can be reversible following acute exposure, the potential exists for them to progressively become more serious with repeated exposures. There are several possible mechanisms for the toxicity. Depending on the route of exposure could include direct effects on hepatocytes and/or indirect effects through the circulatory and immune systems. The catabolism of formaldehyde includes conversion to CO2 by reactions involving glutathione. Many hepatotoxic chemicals require glutathione for detoxification. Formaldehyde may then have the potential to cause additive toxicity with such chemicals in some circumstances. http://www.ncbi.nlm.nih.gov/pubmed/?term=6389892 “Exposure to formaldehyde appears to be associated with hepatoxicity in many species, including humans, following injection, ingestion, or inhalation.” “The results of the present study indicate that polysorbate 80 can neither be used as a solvent for isolated tissue experiments nor when considered for intravenous administration.” Arzneimittelforschung • 1985 Polysorbate 80: a pharmacological study Varma RK, Kaushal R, Junnarkar AY, Thomas GP, Naidu MU, Singh PP, Tripathi RM, Shridhar DR. Abstract Polyoxyethylene (20) sorbitan monooleate (polysorbate 80, Tween 80), a surfactant, has been widely used as a solvent for pharmacological experiments. In the present study, polysorbate 80 was found to have toxicity of a low order in both the mice and rats when given by i.p. and p.o. routes. It produced mild to moderate depression of the central nervous system with a marked reduction in locomotor activity and rectal temperature, exhibited ataxia and paralytic activity and potentiated the pentobarbital sleeping time. On intravenous administration in dogs, it had a dose-dependent hypotensive effect. Polysorbate 80 did not have a direct stimulant or relaxant effect on either guinea pig ileum or rat uterus, however, it antagonised the contractions induced by acetylcholine, histamine, barium, 5-hydroxytryptamine and carbachol in a dose-dependent manner. A direct relaxant effect was observed on rabbit jejunum. A dose-dependent myocardial depressant effect was observed on guinea pig and rabbit paired atrial preparations. On the electrically-driven guinea pig left atrial preparation, polysorbate 80 exhibited a dosedependent negative inotropic action. Polysorbate 80 did not induce diuresis in rats upto a dose of 2.5 ml/kg. The results of the present study indicate that polysorbate 80 can neither be used as a solvent for isolated tissue experiments nor when considered for intravenous administration. However, polysorbate 80 can be employed safely as a vehicle for neuropsychopharmacological experiments in doses not exceeding 1 ml/kg. http://www.ncbi.nlm.nih.gov/pubmed/4026903 Pediatrics • April 1986 Polysorbate 80 and E-Ferol toxicity Alade SL, Brown RE, Paquet A Jr. Abstract The relatively recent introduction and use of an intravenous form of a vitamin E preparation (E-Ferol) has been associated with the development of an unusual syndrome and fatalities among low birth weight (less than 1,500 g), premature infants in neonatal intensive care units. We have observed an inhibitory effect by this vitamin E preparation on the in vitro response of human lymphocytes to phytohemagglutinin (PHA). E-Ferol suppressed the expected response to low doses of PHA. However, this suppression was not due to the alpha-tocopherol acetate (vitamin E) component, because alpha-tocopherol acetate by itself was not inhibitory; in fact, it often enhanced the PHA response. Because a mixture of polysorbate 80 and polysorbate 20 is used as a carrier in E-Ferol, these components were also tested and were found to be responsible for the suppression, especially the polysorbate 80. Concurrent with this suppression of PHA-induced mitogenesis was a decrease in the percentage of T11 lymphocytes. http://www.ncbi.nlm.nih.gov/pubmed/3960626 “The relatively recent introduction and use of an intravenous form of a vitamin E preparation has been associated with the development of an unusual syndrome and fatalities among low birth weight (less than 1,500 g), premature infants in neonatal intensive care units ... polysorbate 80 and polysorbate 20 ... were found to be responsible for the suppression, especially the polysorbate 80.” Laboratory Animal Science • March 1989 An evaluation of distress following intraperitoneal immunization with Freund’s adjuvant in mice Author information Toth LA1, Dunlap AW, Olson GA, Hessler JR. Department of Comparative Medicine University of Tennessee Memphis 38163 Abstract Intraperitoneal immunization with Freund’s adjuvant is frequently used to stimulate antibody production in mice. To evaluate the clinical and pathological effects of this technique, mice were immunized intraperitoneally with complete Freund’s adjuvant and albumin, and the injection repeated 3-4 weeks later using incomplete Freund’s adjuvant. This regimen induced a mean antibody titer against albumin of 1:280 within 7 days after booster immunization and increased the abdominal width, abdominal circumference and spleen weights of immunized animals. Food intake and body weight decreased after immunization, but returned to control levels within 1-2 weeks. Openfield activity was not affected. Neutrophilia, eosinophilia and monocytosis were present 7 days after immunization and persisted for the duration of the study. Gross and histopathological lesions included multiple granulomatous abdominal adhesions and lymphoid hyperplasia. Thus, intraperitoneal immunization with Freund’s adjuvant and albumin produced some adverse effects in the animal (weight loss, neutrophilia and granulomatous peritonitis). However, the animals did not appear to be severely or chronically impaired, since food intake, body weight and locomotor activity were within normal limits for most of the post-immunization period. http://www.ncbi.nlm.nih.gov/pubmed/?term=2709800 “intraperitoneal immunization with Freund’s adjuvant and albumin produced some adverse effects in the animal (weight loss, neutrophilia and granulomatous peritonitis).” American Journal Of Public Health • April 1989 The role of secondary vaccine failures in measles outbreaks Author information Mathias RG1, Meekison WG, Arcand TA, Schechter MT. Department of Health Care and Epidemiology University of British Columbia, Vancouver Abstract An outbreak of measles in 1985-86 in a community where measles vaccine trials had been carried out from 1974-76 allowed the assessment of the role of secondary vaccine failures in previously immunized children. A total of 188 children from the vaccine trial were followed. Of these, 175 seroconverted initially while 13 (6 per cent) required re-immunization (primary failure). A total of 13 cases of measles, eight of which were laboratory and/or physician-confirmed, were reported in this cohort. Of these, nine cases occurred in the 175 subjects who had hemagglutination inhibition test (HI) and neutralizing antibody responses following the initial immunization. These nine cases represent secondary vaccine failures. An additional four cases occurred in the 13 subjects with primary vaccine failure. We conclude that secondary vaccine failures occur and that while primary failures account for most cases, secondary vaccine failures contribute to the occurrence of measles cases in an epidemic. A booster dose of measles vaccine may be necessary to reduce susceptibility to a sufficiently low level to allow the goal of measles elimination to be achieved. http://www.ncbi.nlm.nih.gov/pubmed/2929807 “These nine cases represent secondary vaccine failures. An additional four cases occurred in the 13 subjects with primary vaccine failure. We conclude that secondary vaccine failures occur and that while primary failures account for most cases, secondary vaccine failures contribute to the occurrence of measles cases in an epidemic.” Scope • 1990 Short-term Toxicity Tests for Non-genotoxic Effects Toxicity Tests with Mammalian Cell Cultures B. Ekwall, V. Silano, A. Paganuzzi-Stammati, F. Zucco Introduction Cell culture can be used to screen for toxicity both by estimation of the basal functions of the cell (i.e. those processes common to all types of cells) or by tests on specialized cell functions (Ekwall, 1983b). General toxicity tests, aimed mainly at detection of the biological activity of test substances, can be carried out on many cell types (e.g. fibroblasts, HeLa and hepatoma cells). A number of parameters including vital staining, cytosolic enzyme release, cell growth and cloning efficien- cy are used as end-points to measure toxicity. Organ-specific toxic effects are tested using specialized cells by measuring alterations in membrane and metabolism integ- rity and/or in specific cell functions (e.g. glycogen metabolism in primary hepatocyte cultures, beating rate in mixed myocardial cells or myocytes, and phagocytosis in macrophages). http://dge.stanford.edu/SCOPE/SCOPE_41/SCOPE_41_2.02_Chapter_7_75-98.pdf [shows that as far back as 1990 we could test for non-genotoxic cellular toxicity] Neuropediatrics • November 1990 Workshop on neurologic complications of pertussis and pertussis vaccination Author information Menkes JH1, Kinsbourne M. University of California, Los Angeles “1. Vaccines are not standardized between manufacturers. Abstract A multidisciplinary workshop held from September 29 to October 1, 1989, at Airlie House, Warrenton, Virginia, considered the neurologic complications of whooping cough and pertussis vaccine. Pertussis mortality in the U.S. in 2-3/1000 cases. Seizures occur in 1.9% of cases, and encephalopathy in 0.3%. Reviewing all data, it appears likely that a combination of one or more bacterial toxins, asphyxia, CO2 retention and loss of cerebral vascular autoregulation is responsible for neurologic symptoms. The timing of the encephalopathy suggests that it results from increased lysis of bacteria, and release of endotoxin. The encephalopathy is not confined to the paroxysmal phase. In evaluating side-reactions to the vaccine, the following must be kept in mind: 1. Vaccines are not standardized between manufacturers. 2. For a given manufacturer, vaccines are not standard from one batch to the next. 3. Unless the vaccine is properly prepared and refrigerated, its potency and reactivity varies with shelf life. In fact, the whole question of vaccine detoxification has never been systematically investigated. Listed in order of increasing severity, observed adverse reactions include irritability, persistent, unusually high pitched crying, somnolence, seizures, a shock-like “hypotensive, hyporesponsive” state, and an encephalopathy. Since the neurologic picture is not specific for pertussis vaccination, its temporal relationship to the vaccination is the critical variable for determining causation. Although the majority of seizures following pertussis vaccination are associated with fever, it was the consensus of the neurologists attending the workshop, that these do not represent febrile convulsions, but are non-benign convulsions. The incidence of post-vaccine encephalopathy is difficult to ascertain. (Abstract truncated at 250 words) http://www.ncbi.nlm.nih.gov/pubmed/1981251 Full Report https://www.thieme-connect.com/DOI/DOI?10.1055/s-2008-1071488 2. For a given manufacturer, vaccines are not standard from one batch to the next. 3. Unless the vaccine is properly prepared and refrigerated, its potency and reactivity varies with shelf life. In fact, the whole question of vaccine detoxification has never been systematically investigated.” Pediatric Infectious Disease Journal • March 1991 Aseptic meningitis as a complication of mumps vaccination Author information Sugiura A1, Yamada A. Department of Measles Virus National Institute of Health Tokyo, Japan Abstract In 1989 a nationwide surveillance of neurologic complications after the administration of mumps vaccine was conducted in Japan, based on the notification of cases and the testing of mumps viruses isolated from cerebrospinal fluid for their relatedness to the vaccine by nucleotide sequence analysis. Among 630,157 recipients of measlesmumps-rubella trivalent (MMR) vaccine containing the Urabe Am9 mumps vaccine, there were at least 311 meningitis cases suspected to be vaccine-related. In 96 of these 311 cases, mumps virus related to the vaccine was isolated from cerebrospinal fluid. The unusually high incidence may have been partly a result of the adverse media publicity of the problem at the time of surveillance. We analyzed clinical features of 165 and 27 laboratory-confirmed mumps vaccine-related meningitis cases that occurred among the recipients of MMR and monovalent mumps vaccines, respectively, during a 1-year period after the introduction of MMR vaccine. The incidence of vaccinerelated meningitis was similar among the recipients of MMR and monovalent Urabe Am9 mumps vaccines. Meningitis was generally mild and there were no sequelae from the illness. The complication was more frequent among male than among female children. http://www.ncbi.nlm.nih.gov/pubmed/2041668 “Among 630,157 recipients of measles-mumps-rubella trivalent (MMR) vaccine containing the Urabe Am9 mumps vaccine, there were at least 311 meningitis cases suspected to be vaccine-related. In 96 of these 311 cases, mumps virus related to the vaccine was isolated from cerebrospinal fluid.” Lancet • September 1991 Chronic fatigue syndrome: clinical condition associated with immune activation Author information Landay AL1, Jessop C, Lennette ET, Levy JA. Department of Immunology/Microbiology Rush-Presbyterian-St. Luke’s Medical Center Chicago, Illinois Abstract There is much conflicting immunological and viral data about the causes of chronic fatigue syndrome (CFS); some findings support the notion that CFS may be due to one or more immune disorders that have resulted from exposure to an infectious agent. In the present study, flow cytometry and several different monoclonal antibodies recognising T, B, and natural killer (NK) cell populations as well as activation and cell adhesion antigens were used to study 147 individuals with CFS. Compared with healthy controls, a reduced CD8 suppressor cell population and increased activation markers (CD38, HLA-DR) on CD8 cells were found. The differences were significant (p = 0.01) in patient with major symptoms of the disease. These immunological indices were not observed in 80 healthy individuals, in 22 contacts of CFS patients, or in 43 patients with other diseases. No correlation of these findings in CFS patients with any known human viruses could be detected by serology. The findings suggest that immune activation is associated with many cases of CFS. http://www.ncbi.nlm.nih.gov/pubmed/?term=1679864 “No correlation of these findings in chronic fatigue syndrome (CFS) patients with any known human viruses could be detected by serology. The findings suggest that immune activation is associated with many cases of CFS.” Vaccine • October 1991 Adverse reactions after injection of adsorbed diphtheria-pertussis-tetanus (DPT) vaccine are not due only to pertussis organisms or pertussis components in the vaccine Author information Gupta RK1, Relyveld EH. National Institutes of Health Bethesda, MD 20892 Abstract Reactions to adsorbed diphtheria-pertussis-tetanus (DPT) vaccine have mostly been attributed to the pertussis organisms or pertussis components in the vaccine. Nevertheless reactions may also be due to other factors such as sensitization induced by aluminium adjuvants and impurities present in crude toxoids that cannot be removed by purification of toxoids after formalinization. Aluminium compounds such as aluminium phosphate and aluminium hydroxide are the most commonly used adjuvants with vaccines for human use. Due to the increasing concern about the toxicity of aluminium, other adjuvants like calcium phosphate may be evaluated as an alternative to aluminium adjuvants. To minimize reactions after immunization with DPT vaccine due to impurities in the toxoids, the use of toxoided purified toxins is suggested. http://www.ncbi.nlm.nih.gov/pubmed/?term=1759487 “... reactions may also be due to other factors such as sensitization induced by aluminium adjuvants and impurities present in crude toxoids that cannot be removed by purification of toxoids after formalinization.” Journal Of Autoimmunity • December 1991 Adjuvant oils induce arthritis in the DA rat. I. Characterization of the disease and evidence for an immunological involvement Author information Kleinau S1, Erlandsson H, Holmdahl R, Klareskog L. Department of Medical and Physiological Chemistry Uppsala University, Sweden Abstract An intradermal injection of Freund’s incomplete adjuvant oil (FIA) without further additives was shown to induce erosive polyarthritis in dark Agouti (DA) rats, but not in Lewis rats. Histological examination revealed joint inflammation, first with polymorphonuclear cells and synovial hyperplasia, and subsequently, with multinucleated giant cells. Both constituents of FIA, mineral oil and Arlacel A, as well as Pristane oil were arthritogenic, whereas vegetable oil were not. Re-administration of adjuvant oil after recovery failed to induce arthritis, thus making possible a role of specific immunity in this new form of arthritis in rats. http://www.ncbi.nlm.nih.gov/pubmed/?term=1812893 “Freund’s incomplete adjuvant oil (FIA) was shown to induce erosive polyarthritis in ... rats ...” Washington DC National Academies Press (US) 1991 The National Academies Collection Reports funded by National Institutes of Health Howson CP, Howe CJ, Fineberg HV, editors Adverse Effects of Pertussis and Rubella Vaccines: A Report of the Committee to Review the Adverse Consequences of Pertussis and Rubella Vaccines Excerpt Parents have come to depend on vaccines to protect their children from a variety of diseases. Some evidence suggests, however, that vaccination against pertussis (whooping cough) and rubella (German measles) is, in a small number of cases, associated with increased risk of serious illness. This book examines the controversy over the evidence and offers a comprehensively documented assessment of the risk of illness following immunization with vaccines against pertussis and rubella. Based on extensive review of the evidence from epidemiologic studies, case histories, studies in animals, and other sources of information, the book examines: The relation of pertussis vaccines to a number of serious adverse events, including encephalopathy and other central nervous system disorders, sudden infant death syndrome, autism, Guillain-Barre syndrome, learning disabilities, and Reye syndrome. The relation of rubella vaccines to arthritis, various neuropathies, and thrombocytopenic purpura. The volume, which includes a description of the committee’s methods for evaluating evidence and directions for future research, will be important reading for public health officials, pediatricians, researchers, and concerned parents. Full Report http://www.ncbi.nlm.nih.gov/pubmed/25121241 “that the evidence is consistent with a causal relation between DPT vaccine and acute encephalopathy, shock and “unusual shock-like state,” and between RA 27/3 rubella vaccine and chronic arthritis; and that the evidence indicates a causal relation between DPT vaccine and anaphylaxis, between the pertussis component of DPT vaccine and protracted, inconsolable crying, and between RA 27/3 rubella vaccine and acute arthritis.” [RA 27/3 rubella is still in use today] JAMA • January 1992 Adverse events following pertussis and rubella vaccines Summary of a report of the Institute of Medicine Author information Howson CP1, Fineberg HV. Institute of Medicine National Academy of Sciences Washington, DC 20418 Abstract In August 1991, the Institute of Medicine released a report entitled Adverse Effects of Pertussis and Rubella Vaccines, which examined 18 adverse events in relation to diphtheriatetanus-pertussis (DTP) vaccine and four adverse events in relation to the currently used rubella vaccine strain, RA 27/3. The committee spent 20 months reviewing a wide range of information sources, including case series and individual case reports, both published and unpublished, epidemiologic studies, studies in animals, and other laboratory studies. The committee found that the evidence indicates a causal relation between DTP vaccine and anaphylaxis and between the pertussis component of DTP vaccine and extended periods of inconsolable crying or screaming. The committee also reported that the evidence indicates a causal relation between the rubella vaccine and acute arthritis in adult women. The committee found the available evidence weaker but still consistent with a causal relation between DTP vaccine and two conditions--acute encephalopathy and hypotonic, hyporesponsive episodes--and between rubella vaccine and chronic arthritis in adult women. Estimated incidence rates of these adverse events following vaccination are provided, where possible. The committee found that the evidence does not indicate a causal relation between the DTP vaccine and infantile spasms, hypsarrhythmia, Reye’s syndrome, and sudden infant death syndrome. The committee found insufficient evidence to indicate either the presence or absence of a causal relation between DTP vaccine and chronic neurologic damage, aseptic meningitis, erythema multiforme or other rash, Guillain-Barré syndrome, hemolytic anemia, juvenile diabetes, learning disabilities and attention-deficit disorder, peripheral mononeuropathy, or thrombocytopenia, and between rubella vaccine and radiculoneuritis and other neuropathies or thrombocytopenic purpura. The committee’s evaluative methods are briefly described and a summary of research needs is provided. http://www.ncbi.nlm.nih.gov/pubmed/1727962 “The committee found that the evidence indicates a causal relation between DTP vaccine and anaphylaxis and between the pertussis component of DTP vaccine and extended periods of inconsolable crying or screaming. The committee also reported that the evidence indicates a causal relation between the rubella vaccine and acute arthritis in adult women. The committee found the available evidence weaker but still consistent with a causal relation between DTP vaccine and two conditions—acute encephalopathy and hypotonic, hyporesponsive episodes—and between rubella vaccine and chronic arthritis in adult women.” National Toxicology Program Technical Report Series • January 1992 NTP Toxicology and Carcinogenesis Studies of Polysorbate 80 (CAS No. 9005-65-6) in F344/N Rats and B6C3F1 Mice (Feed Studies) Abstract Polysorbate 80 is a nonionic surfactant used widely as an additive in foods, pharmaceutical preparations, and cosmetics as an emulsifier, dispersant, or stabilizer. Toxicity and carcinogenicity studies were conducted by administering polysorbate 80 (which met all compendial specifications) in feed to groups of F344/N rats and B6C3F1 mice of each sex for 14 days, 13 weeks, and 2 years. Genetic toxicology studies were conducted in Salmonella typhimurium. 14-Day Studies: Groups of five rats and five mice of each sex received diets containing 0, 3,000, 6,000, 12,500, 25,000, or 50,000 ppm polysorbate 80. All animals survived to the end of the studies. The mean body weight change of male rats that received 50,000 ppm was significantly lower than that of the controls. The mean body weight changes in all other groups of dosed rats and in all groups of dosed mice were similar to those of the respective controls. No clinical findings or changes in absolute or relative organ weights in rats or mice were related to polysorbate 80 administration. 13-Week Studies: Groups of 10 rats and 10 mice of each sex received diets containing 0, 3,100, 6,200, 12,500, 25,000, or 50,000 ppm polysorbate 80. All animals survived to the end of the studies. The final mean body weights of dosed rats and mice were similar to those of the controls. No clinical findings, changes in absolute or relative organ weights, or gross or microscopic lesions in rats or mice were related to polysorbate 80 administration. 2-Year Studies: Doses for the 2-year studies were selected based on the lack of observed compound-related effects at the dose levels used in the 13-week studies. Groups of 60 rats and 60 mice of each sex received diets containing 0, 25,000, or 50,000 ppm polysorbate 80 for up to 103 weeks. 15-Month Interim Evaluations: Interim evaluations were performed on 7 to 10 rats and mice from each dose group at 15 months. There were no significant changes in absolute or relative organ weights. Incidences of hyperplasia and inflammation of the forestomach were increased in female mice that received 50,000 ppm. No other chemical-related lesions occurred in rats or male mice evaluated at 15 months. Body Weights, Clinical Findings, and Survival in the 2-Year Studies: The mean body weights in male and female rats and male mice administered polysorbate 80 were similar to those of the controls throughout the studies. The final mean body weight of female mice receiving 50,000 ppm was 11%lower than that of the controls. No clinical findings were associated with administration of polysorbate 80. The survival of dosed male rats was lower than that of the controls (0 ppm, 29/50; 25,000 ppm, 18/50; 50,000 ppm, 18/50); the survival of dosed female rats and male and female mice was similar to that of the respective controls (female rats: 23/50, 25/50, 25/50; male mice: 33/49, 34/50, 32/50; female mice: 30/50, 28/50, 26/50). Neoplasms and Nonneoplastic Lesions in the 2-Year Studies: The incidence of adrenal medulla pheochromocytoma was marginally increased in high-dose male rats (21/50, 19/50, 29/50). The incidence of hyperplasia of the adrenal medulla was increased in low-dose male rats but not in high-dose male rats (11/50, 22/50, 12/50). No chemical-related increases in the incidences of neoplasms occurred in male or female mice. The incidences of squamous hyperplasia and inflammation of the forestomach were significantly increased in high-dose male and female mice; forestomach ulcers were significantly increased in high-dose females. Genetic Toxicology: Polysorbate 80 was not mutagenic in Salmonella typhimurium strains TA100, TA1535, TA1537, and TA98 with or without exogenous metabolic activation (S9). Conclusions: Under the conditions of these 2-year feed studies, there was equivocal evidence of carcinogenic activity for polysorbate 80 in male F344/N rats based on an increased incidence of pheochromocytomas of the adrenal medulla. There was no evidence of carcinogenic activity for polysorbate 80 in female F344/N rats or in male or female B6C3F1 mice given 25,000 or 50, or 50,000 ppm. Administration of polysorbate 80 was associated with inflammation and squamous hyperplasia of the forestomach in male and female mice, and with ulcers of the forestomach in female mice. http://www.ncbi.nlm.nih.gov/pubmed/12616296 “Administration of polysorbate 80 was associated with inflammation and squamous hyperplasia of the forestomach in male and female mice, and with ulcers of the forestomach in female mice.” American Journal Of Diseases Of Children • February 1992 Vitamin A levels and severity of measles New York City Author information Frieden TR1, Sowell AL, Henning KJ, Huff DL, Gunn RA. Division of Field Epidemiology Centers for Disease Control Abstract Recent studies show that vitamin A levels decrease during measles and that vitamin A therapy can improve measles outcome in children in the developing world. Vitamin A levels of children with measles have not been studied in developed countries. We therefore measured vitamin A levels in 89 children with measles younger than 2 years and in a reference group in New York City, NY. Vitamin A levels in children with measles ranged from 0.42 to 3.0 mumol/L; 20 (22%) were low. Children with low levels were more likely to have fever at a temperature of 40 degrees C or higher (68% vs 44%), to have fever for 7 days or more (54% vs 23%), and to be hospitalized (55% vs 30%). Children with low vitamin A levels had lower measlesspecific antibody levels. No child in the reference group had a low vitamin A level. Our data show that many children younger than 2 years in New York City have low vitamin A levels when ill with measles, and that such children seem to have lower measles-specific antibody levels and increased morbidity. Clinicians may wish to consider vitamin A therapy for children younger than 2 years with severe measles. Additional studies of vitamin A in measles and other infectious diseases, and in vaccine efficacy trials, should be done. http://www.ncbi.nlm.nih.gov/pubmed/?term=1285727 “Recent studies show that vitamin A levels decrease during measles and that vitamin A therapy can improve measles outcome in children in the developing world. Vitamin A levels of children with measles have not been studied in developed countries.” [vitamin A and vaccination will be studied in Africa 20 years from now and those reports are included herein] Clinical Infectious Disease • August 1992 Chronic arthritis after rubella vaccination Author information Howson CP1, Katz M, Johnston RB Jr, Fineberg HV. Division of International Health Institute of Medicine Washington, D.C. 20418 Abstract In August 1991 the Institute of Medicine released a report entitled “Adverse Effects of Pertussis and Rubella Vaccines” that examined, among other relations, the relation between immunization with the RA 27/3 rubella vaccine strain and chronic arthritis. The committee spent 20 months reviewing a wide range of information sources including case series and individual case reports published in peer-reviewed journals and reported by vaccine manufacturers; unpublished case reports from physicians, parents, and other concerned persons; epidemiological studies; and laboratory studies. There were no animal studies available. The committee found that the evidence is consistent with a causal relation between the RA 27/3 rubella vaccine strain and chronic arthritis in adult women, although the evidence is limited in scope. Proving that rubella vaccination can cause chronic arthritis will require a better understanding of pathogenetic mechanisms and additional well-designed studies. We briefly describe the committee’s evaluative methods and present the evidence underlying its conclusion. http://www.ncbi.nlm.nih.gov/pubmed/1520764 “The committee found that the evidence is consistent with a causal relation between the RA 27/3 rubella vaccine strain and chronic arthritis in adult women ...” “Tween 80 accelerated maturation, prolonged the oestrus cycle, and induced persistent vaginal oestrus.” Food And Chemical Toxicology • March 1993 Delayed effects of neonatal exposure to Tween 80 on female reproductive organs in rats Author information Gajdová M1, Jakubovsky J, Války J. Institute of Preventive and Clinical Medicine Limbová, Bratislava Abstract Neonatal female rats were injected ip (0.1 ml/rat) with Tween 80 in 1, 5 or 10% aqueous solution on days 4-7 after birth. Treatment with Tween 80 accelerated maturation, prolonged the oestrus cycle, and induced persistent vaginal oestrus. The relative weight of the uterus and ovaries was decreased relative to the untreated controls. Squamous cell metaplasia of the epithelial lining of the uterus and cytological changes in the uterus were indicative of chronic oestrogenic stimulation. Ovaries were without corpora lutea, and had degenerative follicles. http://www.ncbi.nlm.nih.gov/pubmed/8473002 Archives of Disease in Childhood • 1994 Ocular contamination with BCG vaccine A j Pollard Department of Paediatrics R H George Department ofMicrobiology Children’s Hospital Ladywood Middleway Ladywood, Birmingham B16 8ET Abstract The complications of BCG vaccination in both the immunocompetent, with local and lymph node ulceration, and in the immunocompromised, with disseminated infection, are familiar to most paediatricians. Moreover, the risks to the doctor from needlestick injury are well known. There are probably few other risks for the vaccinator but we describe a case of ocular contamination with BCG vaccine. During attempted intradermal injection of BCG vaccine into a struggling neonate’s upper arm, the syringe slipped out of the infant’s skin discharging its contents into the attending doctor’s eye. The doctor had received BCG vaccine in childhood. Despite lavage of the eye with water, a painful follicular conjunctivitis developed 24 hours later. There was a rapid response to topical steroids, and the inflammatory response settled completely over the subsequent week. Although it was assumed that this was a delayed-type hypersensitivity response, anti-BCG cover was given with a one month course of oral isoniazid. Full Report: https://app.box.com/s/ev8bhi6vb3rofhrkavum3v3hpt2xlil9 “During attempted intradermal injection of BCG vaccine into a struggling neonate’s upper arm, the syringe slipped out of the infant’s skin discharging its contents into the attending doctor’s eye.” National Academies Press US • 1994 DPT Vaccine and Chronic Nervous System Dysfunction: A New Analysis Institute of Medicine US Committee to Study New Research on Vaccines Editors Kathleen R. Stratton, Cynthia J. Howe, and Richard B. Johnston, Jr. Washington, DC EXECUTIVE SUMMARY An Institute of Medicine (IOM) committee recently concluded that the evidence is consistent with a causal relation between vaccination with DPT and acute encephalopathy (IOM, 1991), and the excess risk was estimated to range from 0 to 10.5 per million DPT immunizations. However, the same IOM committee also concluded that the evidence was insufficient to indicate a causal relation between DPT and permanent neurologic damage (IOM, 1991). In fact, the relation between DPT and chronic nervous system dysfunction had not been studied in a rigorous scientific manner until recently. Because the evidence has been so limited, the appearance of a single new report, a 10-year follow-up to the National Childhood Encephalopathy Study (NCES; Miller et al., 1993), prompted the U.S. Public Health Service to ask IOM to convene the Committee to Study New Research on Vaccines with the charge of studying the new data and, if warranted, reevaluating the causal relation between DPT and chronic nervous system dysfunction. serious acute neurologic illness that occurs within 7 days after receiving DPT. The NCES provides data only on the limited case of a possible relation between DPT and chronic nervous system dysfunction in those children in whom a serious acute neurologic illness followed DPT vaccination within 7 days. The NCES reported that the occurrence of hospitalization for serious neurologic disorders among 2- to 35-month-old children is very strongly related to the occurrence of death or nervous system dysfunction (neurologic, behavioral, educational, motor, sensory, or self-care impairment) up to age 10 years (Madge et al., 1993; Miller et al., 1993). Children who experienced the rare but serious acute neurologic disorder within 7 days after receiving DPT were no more or less likely to experience documented chronic nervous system dysfunction or to have died within 10 years of the acute disorder than children who had not received DPT within 7 days prior to the onset of the disorder. There were no special characteristics associated with the acute or chronic nervous system illnesses linked to DPT exposure. 2. DPT might trigger (and thereby be an immediate or proximate cause) an acute neurologic illness and subsequent chronic dysfunction in children with underlying brain or metabolic abnormalities. Such children might experience acute neurologic illness and subsequent chronic dysfunction in association with some trigger other than DPT. The NCES did not investigate the possibility of a direct relation between DPT and chronic nervous system dysfunction, that is, in the absence of a The committee posits three plausible scenarios whereby the acute neurologic illnesses that follow DPT might be related to chronic nervous system dysfunction. 1. DPT administration might cause serious acute neurologic illness and subsequent chronic dysfunction in children who otherwise might not have experienced either an acute neurologic illness or chronic dysfunction in the absence of DPT. 3. DPT might cause an acute neurologic illness in children with underlying brain or metabolic abnormalities that would themselves eventually have led to chronic dysfunction even in the absence of an acute neurologic illness. The committee believes its conclusions take into account the fact that the data do not support any one of these scenarios over the others. Because the NCES did not (and probably could not) rule out the possibility that onlychildren with underlying brain or metabolic abnormalities react to stimuli http://www.ncbi.nlm.nih.gov/books/NBK225452/ such as DPT with acute neurologic illness, and no other studies establish or rule out such a possibility, the committee concludes that the evidence is insufficient to indicate whether or not DPT increases the overall risk in children of chronic nervous system dysfunction. The National Childhood Encephalopathy Study data are consistent with the possibility that some children without underlying brain or metabolic abnormalities might experience serious acute neurologic illness within 7 days after receiving DPT and that acute neurologic illness will have chronic nervous system sequelae. The NCES data also are consistent with the possibility that some children with underlying brain or metabolic abnormalities (which foster a “triggering” by DPT of an acute neurologic illness) might go on to develop chronic nervous system dysfunction due to a DPT-triggered acute illness. Therefore, the committee concludes that the balance of evidence is consistent with a causal relation between DPT and the forms of chronic nervous system dysfunction described in the NCES in those children who experience a serious acute neurologic illness within 7 days after receiving DPT vaccine. This serious acute neurologic response to DPT is a rare event. The excess risk has been estimated to range from 0 to 10.5 per million immunizations (IOM, 1991). The evidence does not “establish” or “prove” a causal relation. The evidence remains insufficient to indicate the presence or absence of a causal relation between DPT and chronic nervous system dysfunction under any other circumstances. That is, because the NCES is the only systematic study of long-term dysfunctions after DPT, the committee can only comment on the causal relation between DPT and those long-term dysfunctions under the conditions studied by the NCES. In particular, it should be noted that the long-term dysfunctions associated with DPT followed a serious acute neurologic illness that occurred in children within 7 days after receiving DPT. Acta Paediatrica • February 1994 Immunosuppression after measles vaccination Author information Smedman L1, Joki A, da Silva AP, Troye-Blomberg M, Aronsson B, Perlmann P. Department of Immunology Stockholm University, Sweden Abstract The influence of conventional live attenuated measles vaccine on cellular immune responsiveness was investigated in Sweden and Guinea-Bissau. Sixteen children in a residential area in Bissau and 16 living in southern Stockholm were examined before and 8-10 days after vaccination. Lymphoproliferation was measured to concanavalin A (con-A), PPD and tetanus toxoid (TT) using a whole-blood 3H-thymidine incorporation assay. Stimulation indices were significantly lower after vaccination than before, in the case of con-A (p = 0.03) and TT (p = 0.01) in the Guinean children and in the case of PPD (p = 0.009) and TT (p = 0.03) in the Swedish children. Stimulation of lymphocytes from measles-immune children with measles antigens resulted in weak lymphoproliferative responses. These observations may be relevant to the increased mortality found in children immunized with high-titre measles vaccines, as compared to controls, in recent studies. The study confirms the applicability and usefulness under field conditions of the whole blood version of the thymidine incorporation assay. http://www.ncbi.nlm.nih.gov/pubmed/?term=8193495 “These observations may be relevant to the increased mortality found in children immunized with high-titre measles vaccines, as compared to controls, in recent studies.” Journal Of Clinical Pharmacology • February 1994 Adverse drug reactions in neonates Author information Knight M. Department of Pediatrics, College of Medicine University of Florida Health Science Center, Gainesville 32610 Abstract Adverse drug reactions (ADR) are uncommon causes of admission of neonates to the neonatal intensive care unit. The neonate, however, is potentially at significant risk for adverse drug reactions because of underdeveloped mechanisms and systems for handling drugs (the Gray Baby Syndrome with chloramphenicol as a classic example), the fact that infants in neonatal intensive care units are often critically ill with multiple organ system dysfunction, that they may be on multiple drugs, and that they may present with an adverse drug reaction as a result of exposure while still a fetus. There is also a history of misadventures in the neonatal intensive care unit and newborn nurseries due to exposure to antibacterial agents that produced systemic effects from percutaneous absorption. In this review, an overview of the mechanisms of adverse drug reactions will be presented, followed by a general review of the experience of adverse drug reactions in neonates and some specific examples of current adverse drug reactions and a suggested approach for the prevention and evaluation of adverse drug reactions in neonates. http://www.ncbi.nlm.nih.gov/pubmed/?term=8163712 “The neonate, however, is potentially at significant risk for adverse drug reactions because of underdeveloped mechanisms and systems for handling drugs ...” “Eighty-seven previously vaccinated school-aged children with measles that met the Advisory Committee on Epidemiology’s clinical case definition for measles.” Canadian Medical Association Journal • April 1994 Measles outbreak in 31 schools: risk factors for vaccine failure and evaluation of a selective revaccination strategy Author information Yuan L. Department of Preventive Medicine and Biostatistics University of Toronto, Ontario, CA Abstract OBJECTIVE To examine the risk factors for measles vaccine failure and to evaluate the effectiveness of a selective revaccination strategy during a measles outbreak. DESIGN Matched case-control study. SETTING Thirty-one schools in Mississauga, Ont. SUBJECTS Eighty-seven previously vaccinated school-aged children with measles that met the Advisory Committee on Epidemiology’s clinical case definition for measles. Two previously vaccinated control subjects were randomly selected for each case subject from the same homeroom class. INTERVENTIONS All susceptible contacts were vaccinated, and contacts who had been vaccinated before Jan. 1, 1980, were revaccinated. When two or more cases occurred in a school all children vaccinated before 1980 were revaccinated. MAIN OUTCOME MEASURES Risk of measles associated with age at vaccination, time since vaccination, vaccination before 1980 and revaccination. RESULTS Subjects vaccinated before 12 months of age were at greater risk of measles than those vaccinated later (adjusted odds ratio [OR] 7.7, 95% confidence interval [CI] 1.6 to 38.3; p = 0.01). Those vaccinated between 12 and 14 months of age were at no greater risk than those vaccinated at 15 months or over. Subjects vaccinated before 1980 were at greater risk than those vaccinated after 1980 (adjusted OR 14.5, 95% CI 1.5 to 135.6). Time since vaccination was not a risk factor. Revaccination was effective in reducing the risk of measles in both subjects vaccinated before 1980 and those vaccinated after 1980 (adjusted OR reduced to 0.6 [95% CI 0.1 to 5.3] and 0.3 [95% CI 0.13 to 2.6] respectively). However, only 18 cases were estimated to have been prevented by this strategy. CONCLUSIONS Adherence to routine measles vaccination for all eligible children is important in ensuring appropriate coverage with a single dose. The selective revaccination strategy’s high labour intensiveness and low measles prevention rate during the outbreak bring into question the effectiveness of such a strategy. http://www.ncbi.nlm.nih.gov/pubmed/8137189 Vaccine • April 1994 Adverse reactions after diphtheria-tetanus booster in 10-year-old schoolchildren in relation to the type of vaccine given for the primary vaccination Author information Blennow M1, Granström M, Strandell A. 1Department of Pediatrics Sachs’ Children’s Hospital Stockholm, Sweden Abstract This prospective open study investigated adverse reactions in 527 schoolchildren to a diphtheria-tetanus (DT) booster given within a national vaccination programme at 10 years of age. Evaluation was based on those whose immunization records showed that they had received either three doses of an adsorbed DT vaccine (n = 388) or a non-adsorbed DT-pertussis vaccine (DTP) (n = 69) for primary series vaccination. No differences in systemic reactions to the booster between the two groups were observed. Local reactions were significantly (p < 0.001) more common 1 day after vaccination in children who had received DT for primary series vaccination: redness, 73% compared with 23%; swelling, 56% versus 15%; and itching, 47% versus 21%. One and 2 weeks after the booster, itching was still more pronounced in the group who had received DT for primary series vaccination (p < 0.001 and 0.014, respectively). The study indicates that there was a real basis for the increase in spontaneous notifications of local side-effects to the school DT booster in Sweden. The most likely cause for the increase seems to be the aluminium adjuvant in the vaccine given for primary vaccination, a late and unexpected consequence of a change in the infant immunization programme. http://www.ncbi.nlm.nih.gov/pubmed/?term=8023551 “This prospective open study investigated adverse reactions in 527 schoolchildren to a diphtheria-tetanus (DT) booster ... The most likely cause for the increase seems to be the aluminium adjuvant in the vaccine given for primary vaccination, a late and unexpected consequence of a change in the infant immunization programme.” JAMA • May 1994 Adverse events associated with childhood vaccines other than pertussis and rubella. Summary of a report from the Institute of Medicine Author information Stratton KR1, Howe CJ, Johnston RB Jr. Institute of Medicine, National Academy of Sciences Washington, DC Abstract In September 1993, the Institute of Medicine released a report entitled Adverse Events Associated With Childhood Vaccines: Evidence Bearing on Causality. The report examined putative serious adverse consequences associated with administration of diphtheria and tetanus toxoids; measles, mumps, and measles-mumps-rubella vaccines; oral polio vaccine and inactivated polio vaccine; hepatitis B vaccines; and Haemophilus influenzae type b (Hib) vaccines. The committee spent 18 months reviewing all available scientific and medical data, from individual case reports (published and unpublished) to controlled clinical trials. The committee found that the evidence favored the rejection of a causal relation between diphtheria and tetanus toxoids and encephalopathy, infantile spasms, and sudden infant death syndrome, and between conjugate Hib vaccines and susceptibility to Hib disease. The committee found that the evidence favored acceptance of a causal relation between diphtheria and tetanus toxoids and Guillain-Barré syndrome and brachial neuritis, between measles vaccine and anaphylaxis, between oral polio vaccine and Guillain-Barré syndrome, and between unconjugated Hib vaccine and susceptibility to Hib disease. The committee found that the evidence established causality between diphtheria and tetanus toxoids and anaphylaxis, between measles vaccine and death from measles vaccine-strain viral infection, between measles-mumps-rubella vaccine and thrombocytopenia and anaphylaxis, between oral polio vaccine and poliomyelitis and death from polio vaccine-strain viral infection, and between hepatitis B vaccine and anaphylaxis. For five vaccine-related adverse events, there was no evidence identified. For the remaining 33 vaccine-related adverse events, the evidence was inadequate to accept or reject a causal relation. http://www.ncbi.nlm.nih.gov/pubmed/8182813 “The committee found that the evidence favored acceptance of a causal relation between diphtheria and tetanus toxoids and Guillain-Barré syndrome and brachial neuritis, between measles vaccine and anaphylaxis, between oral polio vaccine and Guillain-Barré syndrome, and between unconjugated Hib vaccine and susceptibility to Hib disease. The committee found that the evidence established causality between diphtheria and tetanus toxoids and anaphylaxis, between measles vaccine and death from measles vaccine-strain viral infection, between measles-mumpsrubella vaccine and thrombocytopenia and anaphylaxis, between oral polio vaccine and poliomyelitis and death from polio vaccine-strain viral infection, and between hepatitis B vaccine and anaphylaxis.” “In 1993 we found 17 cases of Adverse Events Following Immunization (AEFI) out of 1440 children between 0 and 2 years of age ...” Przeglad Epidemiologiczny • 1994 Adverse events following immunization: AEFI in 17 children between 0 and 2 years of age Author information Taraszkiewicz F1, Bogus-Parafieniuk W, Oldak E, Sulik A. Klinika Chorób Zakaznych Dzieci Akademii Medycznej w Bialymstoku Abstract Adverse Events Following Immunization (AEFI) are disadvantageous side effects of preventive vaccination. In 1993 we found 17 cases of AEFI out of 1440 children between 0 and 2 years of age who had received BCG, diphtheria-tetanus-pertussis, measles or poliomyelitis vaccine. They were classified as reactions in 14 children (0.9%) or complications in 3 children (0.2%). Twelve adverse reactions followed DTP vaccination (0.8%), two followed BCG vaccination (0.14%), another two measles vaccination (0.14%) and one followed poliomyelitis vaccination (0.07%). Both generalized and local symptoms were present and they regressed with no further complications. Two children who had received BCG were noted to have a deeply placed abscess at the injection site remaining scar as well as axillary, submandibular and cervical lymph nodes enlargement within 6 months. In a 3 months old child, after the first injection of DTP vaccine, convulsions and consciousness disorder occurred. Transfontanel ultrasonography revealed intraventricular haemorrhage. After one year of intensive neurological care child’s health state was improved. In spite of using still more and more safe vaccines none of them is the ideal one—the one with no adverse events following vaccination. Vaccination technics, distribution and storage of vaccines are to be improved which may result in decrease number of AEFI. http://www.ncbi.nlm.nih.gov/pubmed/7597191 CDC • MMWR • 1996 Update: Vaccine Side Effects, Adverse Reactions, Contraindications, and Precautions Recommendations of the Advisory Committee on Immunization Practices (ACIP) Summary This report provides updated information concerning the potential adverse events associated with vaccination for hepatitis B, poliomyelitis, measles, mumps, diphtheria, tetanus, and pertussis. This information incorporates findings from a series of recent literature reviews, conducted by an expert committee at the Institute of Medicine (IOM), of all evidence regarding the possible adverse consequences of vaccines administered to children. This report contains modifications to the previously published recommendations of the Advisory Committee on Immunization Practices (ACIP) and is based on an ACIP review of the IOM findings and new research on vaccine safety. In addition, this report incorporates information contained in the “Recommendations of the Advisory Committee on Immunization Practices: Use of Vaccines and Immune Globulins in Persons with Altered Immunocompetence” (MMWR 1993;42{No. RR-4}) and the “General Recommendations on Immunization: Recommendations of the Advisory Committee on Immunization Practices (ACIP)” (MMWR 1994;43{No. RR-1}). Major changes to the previous recommendations are highlighted within the text, and specific information concerning the following vaccines and the possible adverse events associated with their administration are included: hepatitis B vaccine and anaphylaxis; measles vaccine and a) thrombocytopenia and b) possible risk for death resulting from anaphylaxis or disseminated disease in immunocompromised persons; diphtheria and tetanus toxoids and pertussis vaccine (DTP) and chronic encephalopathy; and tetanus-toxoid-containing vaccines and a) Guillain-Barre syndrome, b) brachial neuritis, and c) possible risk for death resulting from anaphylaxis. These modifications will be incorporated into more comprehensive ACIP recommendations for each vaccine when such statements are revised. Also included in this report are interim recommendations concerning the use of measles and mumps vaccines in: a. persons who are infected with human immunodeficiency virus and b. persons who are allergic to eggs; ACIP is still evaluating these recommendations. http://www.cdc.gov/mmwr/preview/mmwrhtml/00046738.htm Pediatric Infectious Disease Journal • January 1996 Measles outbreaks in the United States, 1987 through 1990 Author information Hutchins S1, Markowitz L, Atkinson W, Swint E, Hadler S. National Immunization Program Centers for Disease Control and Prevention Atlanta, GA, USA Abstract “There were 815 outbreaks, accounting for 94% of the 52,846 cases reported. 3 patterns of measles transmission during BACKGROUND During 1989 and 1990 reported measles cases in the United States increased 6- to 9-fold over the annual mean of 3000 between 1985 and 1988. To evaluate recent epidemiology we summarized measles outbreaks. outbreaks were identified: METHODS Confirmed measles cases reported to the National Notifiable Disease Surveillance System during 1987 through 1990 were analyzed. An outbreak was defined as > or = 5 epidemiologically linked cases. (1) predominantly among unvaccinated RESULTS There were 815 outbreaks, accounting for 94% of the 52,846 cases reported. Similar to 1985 and 1986, 3 patterns of measles transmission during outbreaks were identified: (1) predominantly among unvaccinated pre-school age children < 5 years of age (38% of outbreaks); (2) predominantly among vaccinated school age children 5 to 17 years of age (40%); and (3) predominantly among unvaccinated and vaccinated post-school age persons > or = 18 years of age (22%). Most outbreaks were small (median, 12 cases), but very large outbreaks occurred (maximum size, 10,670). Although school age outbreaks (58%) predominated during 1987 and 1988, preschool age (40%) and postschool age (23%) outbreaks were more important during 1989 and 1990. CONCLUSIONS Recent epidemiology suggests that to achieve elimination of measles, ACIP recommendations must be fully implemented, including (1) routine administration of the first dose of measles vaccine from 12 to 15 months of age and (2) use of a routine two-dose schedule to prevent school age and post-school age outbreaks. http://www.ncbi.nlm.nih.gov/pubmed/8684873 pre-school age children (38% of outbreaks) (2) predominantly among vaccinated school age children 5 to 17 years of age (40%) (3) predominantly among unvaccinated and vaccinated post-school age persons (22%) ...” Carcinogenesis • January 1996 DNA— protein crosslinks, a biomarker of exposure to formaldehyde— in vitro and in vivo studies Author information Shaham J1, Bomstein Y, Meltzer A, Kaufman Z, Palma E, Ribak J. Occupational Cancer Unit Occupational Health and Rehabilitation Institute Raanana, Israel Abstract Formaldehyde (FA) is a widely produced industrial chemical. Sufficient evidence exists to consider FA as an animal carcinogen. In humans the evidence is not conclusive. DNA-protein crosslinks (DPC) may be one of the early lesions in the carcinogenesis process in cells following exposures to carcinogens. It has been shown in in vitro tests that FA can form DPC. We examined the amount of DPC formation in human white blood cells exposed to FA in vitro and in white blood cells taken from 12 workers exposed to FA and eight controls. We found a significant difference (P = 0.03) in the amount of DPC among exposed (mean +/- SD 28 +/- 5%, minimum 21%, maximum 38%) than among the unexposed controls (mean +/- SD 22 +/- 6%, minimum 16%, maximum 32%). Of the 12 exposed workers, four (33%) showed crosslink values above the upper range of controls. We also found a linear relationship between years of exposure and the amount of DPC. We conclude that our data indicate a possible mechanism of FA carcinogenicity in humans and that DPC can be used as a method for biological monitoring of exposure to FA. Full Report http://carcin.oxfordjournals.org/content/17/1/121.long “We conclude that our data indicate a possible mechanism of Formaldehyde carcinogenicity in humans ...” Acta Paediatrica Japan • June 1996 Adverse events associated with MMR vaccines in Japan Author information Kimura M1, Kuno-Sakai H, Yamazaki S, Yamada A, Hishiyama M, Kamiya H, Ueda K, Murase T, Hirayama M, Oya A, Nozaki S, Murata R. School of Medicine Tokai University, Isehara, Japan Abstract The largest nationwide active surveillance of four Measles-Mumps-Rubella (MMR) vaccines was conducted in Japan. A total of 1255 pediatricians actively participated in the study, which comprised 8.6% of all members of the Japanese Pediatric Society. The total number of registered recipients of MMR vaccines was 38 203. They were arbitrarily given one of the MMR vaccines produced by three makers (Takeda, Osaka city, Kitasato Minatoku. Tokyo and Biken Suita city, Japan) or the standard MMR vaccine made of designated strains (Kitasato’s measles-AIK-C, Biken’s mumps-Urabe Am9 and Takeda’s rubella-To336) produced by Takeda, Kitasato and Biken and were observed for 35 days. The rates of virologically confirmed aseptic meningitis per 10,000 recipients were 16.6, 11.6, 3.2 and 0 for the standard MMR, Takeda MMR, Kitasato MMR and Biken MMR vaccines, respectively. The incidence of convulsions between 15 and 35 days was the highest with the standard MMR vaccine and the incidence of fever associated with vomiting occurring between 15 and 35 days (symptoms relevant to aseptic meningitis) were also the highest with the standard MMR vaccine. The incidence of parotid swelling was the lowest with Takeda MMR vaccine. This surveillance revealed that incidences of aseptic meningitis after administration of the standard MMR vaccine and of Biken MMR vaccine were different. This posed questions about the manufacturing consistency of the Urabe Am9 mumps virus vaccines. On the other hand, the National Institute of Health found that the biological characteristics of the Urabe Am9 mumps virus contained in the standard MMR vaccine and in the Biken MMR vaccine were different. The Biken Company reported that the mumps vaccine in the standard MMR vaccine was a mixture of two Urabe Am9 mumps vaccine bulks; one identical to that contained in the Biken MMR vaccine and the other produced by a different manufacturing process. http://www.ncbi.nlm.nih.gov/pubmed/8741307 “The incidence of convulsions between 15 and 35 days was the highest with the standard MMR vaccine and the incidence of fever associated with vomiting occurring between 15 and 35 days (symptoms relevant to aseptic meningitis) were also the highest with the standard MMR vaccine. The incidence of parotid swelling was the lowest with Takeda MMR vaccine. This surveillance revealed that incidences of aseptic meningitis after administration of the standard MMR vaccine and of Biken MMR vaccine were different. This posed questions about the manufacturing consistency of the Urabe Am9 mumps virus vaccines.” Lancet • June 1996 Measles and atopy in Guinea-Bissau Author information Shaheen SO1, Aaby P, Hall AJ, Barker DJ, Heyes CB, Shiell AW, Goudiaby A. 1Medical Research Council Environmental Epidemiology Unit University of Southampton, Southhampton General Hospital, UK Abstract BACKGROUND Epidemiological studies have led to speculation that infections in early childhood may prevent allergic sensitisation but evidence to support this hypothesis is lacking. We investigated whether measles infection protects against the development of atopy in children of Guinea-Bissau, West Africa. METHODS We conducted a historical cohort study in Bandim, a semi-rural district of Bissau, the capital of Guinea-Bissau. 395 young adults, first surveyed in 1978-80 aged 0-6 years, were followed up in 1994. Our analyses were restricted to 262 individuals still living in Bandim for whom a measles history, documented in childhood, was judged to be reliable. We defined atopy as skin-prick test positivity (> or = 3 mm weal) to one or more of seven allergens. FINDINGS 17 (12.8 percent) of 133 participants who had had measles infection were atopic compared with 33 (25.6 percent) of 129 of those who had been vaccinated and not had measles (odds ratio, adjusted for potential confounding variables 0.36 [95 percent CI 0.17-0.78], p=O.O1). Participants who had been breastfed for more than a year were less likely to have a positive skin test to housedust mite. After adjustment for breastfeeding and other variables, measles infection was associated with a large reduction in the risk of skin-prick test positivity to housedust mite (odds ratio for Dermatophagoides pteronyssinus 0.20 [0.05-0.81], p=0.02; D farinae 0.20 [0.06-0.71], p=0.01). INTERPRETATION Measles infection may prevent the development of atopy in African children. http://www.ncbi.nlm.nih.gov/pubmed/8667923 “Measles infection may prevent the development of atopy [allergies] in African children.” [as Dr. Buttram stated, challenge viruses like measles and chicken pox strengthen the child’s immune system] “Triton X-100 efficiently induces the apoptotic cell death ...” Yonsei Medical Journal • February 1997 Triton X-100 induces apoptosis in human hepatoma cell lines Author information Ahn JM1, Kim SJ, Kim H, Park C, Kim WH, Park JH. Department of Microbiology Yonsei University College of Medicine Seoul, Korea Abstract The detergent Triton X-100 was used to establish a model for apoptosis in hepatoma cell lines. The electrophoresis of DNA extracted from 0.01% Triton X-100 treated hepatoma cell lines showed DNA ladder formation, a hallmark of apoptosis. The DNA fragmentation appeared within less than 60 min of the Triton X-100 treatment. Chromatin condensation and apoptotic bodies were observed by hematoxylin and eosin (H & E) stain, and fragmented nucleosome was detected by terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick end labelling (TUNEL) test. Apoptosis was semi-quantitated by measuring the lactate dehydrogenase (LDH) level for cytotoxity. It was found that apoptosis had been induced in more than 90% of the cells treated with Triton X-100 for 150 min. These data show that Triton X-100 efficiently induces the apoptotic cell death in hepatoma cell lines. http://www.ncbi.nlm.nih.gov/pubmed/9100483 Epidemiology • November 1997 Is infant immunization a risk factor for childhood asthma or allergy? Author information Kemp T1, Pearce N, Fitzharris P, Crane J, Fergusson D, St George I, Wickens K, Beasley R. 1Department of Medicine Wellington School of Medicine New Zealand Abstract The Christchurch Health and Development Study comprises 1,265 children born in 1977. The 23 children who received no diphtheria/pertussis/tetanus (DPT) and polio immunizations had no recorded asthma episodes or consultations for asthma or other allergic illness before age 10 years; in the immunized children, 23.1% had asthma episodes, 22.5% asthma consultations, and 30.0% consultations for other allergic illness. Similar differences were observed at ages 5 and 16 years. These findings do not appear to be due to differential use of health services (although this possibility cannot be excluded) or confounding by ethnicity, socioeconomic status, parental atopy, or parental smoking. http://www.ncbi.nlm.nih.gov/pubmed/9345669 “The 23 children who received no diphtheria/pertussis/tetanus (DPT) and polio immunizations had no recorded asthma episodes or consultations for asthma or other allergic illness before age 10 years; in the immunized children, 23.1% had asthma episodes, 22.5% asthma consultations, and 30.0% consultations for other allergic illness. Similar differences were observed at ages 5 and 16 years.” Lancet • June 1996 Measles and atopy in Guinea-Bissau Author information Shaheen SO1, Aaby P, Hall AJ, Barker DJ, Heyes CB, Shiell AW, Goudiaby A. Medical Research Council Environmental Epidemiology Unit University of Southampton, Southhampton General Hospital, UK Abstract BACKGROUND Epidemiological studies have led to speculation that infections in early childhood may prevent allergic sensitisation but evidence to support this hypothesis is lacking. We investigated whether measles infection protects against the development of atopy in children of Guinea-Bissau, West Africa. METHODS We conducted a historical cohort study in Bandim, a semi-rural district of Bissau, the capital of Guinea-Bissau. 395 young adults, first surveyed in 1978-80 aged 0-6 years, were followed up in 1994. Our analyses were restricted to 262 individuals still living in Bandim for whom a measles history, documented in childhood, was judged to be reliable. We defined atopy as skin-prick test positivity (> or = 3 mm weal) to one or more of seven allergens. FINDINGS 17 (12.8 percent) of 133 participants who had had measles infection were atopic compared with 33 (25.6 percent) of 129 of those who had been vaccinated and not had measles (odds ratio, adjusted for potential confounding variables 0.36 [95 percent CI 0.17-0.78], p=O. O1). Participants who had been breastfed for more than a year were less likely to have a positive skin test to housedust mite. After adjustment for breastfeeding and other variables, measles infection was associated with a large reduction in the risk of skin-prick test positivity to housedust mite (odds ratio for Dermatophagoides pteronyssinus 0.20 [0.05-0.81], p=0.02; D farinae 0.20 [0.06-0.71], p=0.01). INTERPRETATION Measles infection may prevent the development of atopy in African children. http://www.ncbi.nlm.nih.gov/pubmed/?term=8667923 “Measles infection may prevent the development of atopy [allergies] in African children.” Lancet • June 1997 Gulf War syndrome: is it due to a systemic shift in cytokine balance towards a Th2 profile Author information Rook GA1, Zumla A. Department of Bacteriology University College London Medical School, UK Abstract The symptoms of Gulf War syndrome are compatible with the hypothesis that the immune system of affected individuals is biased towards a Th2cytokine pattern. Factors that could lead to a Th2 shift among Gulf War veterans include exposure to multiple Th2-inducing vaccinations under stressful circumstances and the way in which such vaccinations were administered, which would be expected to maximise Th2 immunogenicity. These factors may have led to a long-term systemic shift towards a Th2cytokine balance and to mood changes related to the immunoendocrine state. Other vaccines that lead to similar long-term, non-specific shifts in cytokine balance are well-established. If our hypothesis is proven, treatment may be possible with regimens that induce a systemic Th1 bias. http://www.ncbi.nlm.nih.gov/pubmed/9269228 “The symptoms of Gulf War syndrome are compatible with the hypothesis that the immune system of affected individuals is biased towards a Th2-cytokine pattern. Factors that could lead to a Th2 shift among Gulf War veterans include exposure to multiple Th2-inducing vaccinations under stressful circumstances and the way in which such vaccinations were administered, which would be expected to maximise Th2 immunogenicity.” “Although the use of adjuvants in veterinary vaccines enhances the immunogenicity of vaccines, they have been responsible for a number of side effects.” Seminars In Veterinary Medicine And Surgery (Small Animal) • August 1997 Vaccine adjuvants Author information Macy DW. Department of Clinical Sciences Colorado State University College of Veterinary Medicine and Biomedical Sciences Fort Collins 80523, USA Abstract Vaccine adjuvants provide enhanced immune responses to a variety of antigens. Unlike human vaccines that are limited to aluminum-based adjuvants, veterinary vaccines may contain a large number of substances either alone or in combination that act as vaccine adjuvants. Although the use of adjuvants in veterinary vaccines enhances the immunogenicity of vaccines, they have been responsible for a number of side effects. This article explores the rationale of currently used vaccine adjuvants and some of the adverse events associated with their use in veterinary medicine. http://www.ncbi.nlm.nih.gov/pubmed/?term=9283246 Journal Of Paediatric Child Health • October 1997 Incidence of apnoea and bradycardia in preterm infants following DTPw and Hib immunization: a prospective study Author information Botham SJ1, Isaacs D, Henderson-Smart DJ. Abstract OBJECTIVE To evaluate the incidence and severity of apnoea and bradycardia in hospitalized preterm infants following immunization at 2 months of age, and identify risk factors. METHODOLOGY A prospective study of 98 preterm infants, of gestational age 24-31 weeks, immunized at approximately 2 months post natal age with diphtheria-tetanus-whole cell pertussis vaccine (DTPw) in the neonatal intensive care unit (NICU) at King George V Hospital Sydney. Half the infants also received Haemophilus influenzae type b conjugate vaccine (Hib) simultaneously. All infants were monitored for apnoea and bradycardia in the 24 h periods pre- and post immunization. RESULTS Only one infant had apnoea and/or bradycardia pre-immunization compared with 17 post immunization. For 12 infants these events were brief, self-limiting and not associated with desaturations (oxygen saturation < 90%). However, for five infants (30%) these events were associated with oxygen desaturation and two of these infants required supplemental oxygen. The group that had apnoea and/or bradycardia and the group that did not were not significantly different in terms of gestational age, birth weight and other variables. Infants who received Hib together with DTPw were less likely to have apnoea and/or bradycardia than those given DTPw alone. CONCLUSION When considering immunization for preterm infants, the benefits of early immunization must be balanced against the risk of apnoea and bradycardia. We recommend that the cardio-respiratory function of hospitalized infants born at less than 31 weeks gestation be monitored for 48 h post immunization. http://www.ncbi.nlm.nih.gov/pubmed/?term=9401886 “Only one infant had apnoea and/or bradycardia pre-immunization compared with 17 post immunization. For 12 infants these events were brief, self-limiting and not associated with desaturations (oxygen saturation < 90%). However, for five infants (30%) these events were associated with oxygen desaturation and two of these infants required supplemental oxygen.” Epidemiology • November 1997 Is infant immunization a risk factor for childhood asthma or allergy? Author information Kemp T1, Pearce N, Fitzharris P, Crane J, Fergusson D, St George I, Wickens K, Beasley R. Department of Medicine Wellington School of Medicine New Zealand Abstract The Christchurch Health and Development Study comprises 1,265 children born in 1977. The 23 children who received no diphtheria/pertussis/tetanus (DPT) and polio immunizations had no recorded asthma episodes or consultations for asthma or other allergic illness before age 10 years; in the immunized children, 23.1% had asthma episodes, 22.5% asthma consultations, and 30.0% consultations for other allergic illness. Similar differences were observed at ages 5 and 16 years. These findings do not appear to be due to differential use of health services (although this possibility cannot be excluded) or con-founding by ethnicity, socioeconomic status, parental atopy, or parental smoking. http://www.ncbi.nlm.nih.gov/pubmed/?term=9345669 “The 23 children who received no diphtheria/pertussis/tetanus (DPT) and polio immunizations had no recorded asthma episodes or consultations for asthma or other allergic illness before age 10 years; in the immunized children, 23.1% had asthma episodes, 22.5% asthma consultations, and 30.0% consultations for other allergic illness.” American Journal Of Human Genetics • 1998 Ecogenetics ’98 Variability in Immune Response to Pathogens: Using Measles Vaccine to Probe Immunogenetic Determinants of Response Gregory A. Poland Mayo Vaccine Research Group Clinical Pharmacology Unit Mayo Clinic and Foundation Rochester, MN Abstract “The measles had not prevailed on the Faroes since 1781; they broke out early in April, 1846. Of the 7,782 inhabitants, about 6,000 were taken with measles ) 225 persons in all died. Of the many old people still living on the Faroes who had had the measles in 1781, not one was attacked the second time.” Quote from P. L. Panum in the report titled “Observations Made during the Epidemic of Measles on the Faroe Islands in the Year 1846” The Faroe Islands measles outbreak described above is of interest to geneticists in several regards: Why did some people survive and some die? Why was the case fatality rate so high? Why was the protective effect of prior exposure so high? Understanding the genetic influences on the phenotypes of protective and nonprotective an- tibody responses provides a unique window to under- stand the variability in host response to pathogens. Vaccine Response as a Marker of Disease Susceptibility Postimmunization antibody response can be used as a marker of disease susceptibility. For example, the level of antibody response after hepatitis B immunization predicts susceptibility to disease on exposure (Ellis 1993). In studies of measles, postimmunization measles antibody in the “low positive” range did not protect against clinical measles when subjects were exposed to the wild measles virus, whereas high levels were protective (Chen et al. 1990). Furthermore, nonresponders to a single dose of measles vaccine who demonstrated an antibody response only after a second immunization were still six times more likely than were responders to a single dose of measles vaccine to develop measles on exposure to wild virus (Mathias et al. 1989). Others examined “poor responders,” who were reimmunized and developed poor or low-level antibody responses only to lose detectable antibody and develop measles on exposure 2–5 years later. They concluded that there is a strong correlation between low antibody levels after a single dose of vaccine and high susceptibility to infection with exposure (Deseda-Tous et al. 1978). Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1376909/pdf/9463343.pdf Vaccine Non-Responders And Low Responders “... nonresponders to a single dose of measles vaccine who demonstrated an antibody response only after a second immunization were still six times more likely than were responders to a single dose of measles vaccine to develop measles on exposure to wild virus (Mathias et al. 1989). Others examined “poor responders,” who were reimmunized and developed poor or low-level antibody responses only to lose detectable antibody and develop measles on exposure 2–5 years later. They concluded that there is a strong correlation between low antibody levels after a single dose of vaccine and high susceptibility to infection with exposure.” (Deseda-Tous et al. 1978) Pediatrics Volume 101 • Issue 3 • March 1998 Acute Encephalopathy Followed by Permanent Brain Injury or Death Associated With Further Attenuated Measles Vaccines: A Review of Claims Submitted to the National Vaccine Injury Compensation Program by Robert E. Weibel, Vito Caserta, David E. Benor, Geoffrey Evans Abstract Objective To determine if there is evidence for a causal relationship between acute encephalopathy followed by permanent brain injury or death associated with the administration of further attenuated measles vaccines (Attenuvax or Lirugen, Hoechst Marion Roussel, Kansas City, MO), mumps vaccine (Mumpsvax, Merck and Co, Inc, West Point, PA), or rubella vaccines (Meruvax or Meruvax II, Merck and Co, Inc, West Point, PA), combined measles and rubella vaccine (M-R-Vax or M-R-Vax II, Merck and Co, Inc, West Point, PA), or combined measles, mumps, and rubella vaccine (M-M-R or M-M-R II, Merck and Co, Inc, West Point, PA), the lead author reviewed claims submitted to the National Vaccine Injury Compensation Program. Methods The medical records of children who met the inclusion criteria of receiving the first dose of these vaccines between 1970 and 1993 and who developed such an encephalopathy with no determined cause within 15 days were identified and analyzed. Results A total of 48 children, ages 10 to 49 months, met the inclusion criteria after receiving measles vaccine, alone or in combination. Eight children died, and the remainder had mental regression and retardation, chronic seizures, motor and sensory deficits, and movement disorders. The onset of neurologic signs or symptoms occurred with a nonrandom, statistically significant distribution of cases on days 8 and 9. No cases were identified after the administration of monovalent mumps or rubella vaccine. Conclusions This clustering suggests that a causal relationship between measles vaccine and encephalopathy may exist as a rare complication of measles immunization. http://www.ncbi.nlm.nih.gov/pubmed/9481001 “A total of 48 children, ages 10 to 49 months, met the inclusion criteria after receiving measles vaccine, alone or in combination. Eight children died, and the remainder had mental regression and retardation, chronic seizures, motor and sensory deficits, and movement disorders. This clustering suggests that a causal relationship between measles vaccine and encephalopathy may exist as a rare complication of measles immunization.” Biomedical And Environmental Science • March 1998 Detection of cytogenetic effects in peripheral lymphocytes of students exposed to formaldehyde with cytokinesis-blocked micronucleus assay Author information He JL1, Jin LF, Jin HY. School of Public Health Zhejiang Medical University Hangzhou, China Abstract Cytokinesis-blocked micronucleus assay was applied as a biological dosimeter to detect abnormalities in human peripheral lymphocytes of thirteen students exposed to formaldehyde (FA) during a 12-week (10 h per week) anatomy class. Breathing-zone air samples collected during dissection procedures showed a mean concentration of 2.37 ppm (3.17 mg/m3). Ten students from the same school but without FA exposure served as controls. Chromosome aberrations (CA) and sister chromatid exchanges (SCE) were detected in both groups. The micronuclei (MN) rate (6.38 +/- 2.50 /1000) and CA rate (5.92 +/- 2.40%) in the FA-exposed group showed a significant increase (P < 0.01) when compared with those of the controls (3.15 +/- 1.46 /1000 and 3.40 +/1.57% respectively). A correlation between MN and CA in individuals was observed. SCE in the exposed group were also increased (P < 0.05), but not so greatly as MN or CA. The results indicated that FA might damage the chromosomes of human lymphocytes. http://www.ncbi.nlm.nih.gov/pubmed/?term=9559107 “The results indicated that FA might damage the chromosomes of human lymphocytes.” “The reader will notice an emerging clear picture that the majority (if not all) of these advances have been achieved from studies funded by independent or charity organizations rather than by the responsible authorities who are supposed and are duty bound to take on this task.” Adverse Drug Reactions And Toxicological Reviews • March 1998 Gulf War syndrome— a model for the complexity of biological and environmental interaction with human health Author information Jamal GA. University Department of Neurology Southern General Hospital NHS Trust, Glasgow Abstract Since the end of the Gulf War, tens of thousands of American, Canadian and British soldiers who participated in that war have claimed to be suffering from a variety of incapacitating symptoms which are generally termed as Gulf War Syndrome (GWS). The symptoms are multiple but mainly consist of excessive tiredness, muscle and joint pain, loss of balance, sensory symptoms, neurobehavioural manifestations, diarrhoea, bladder dysfunction, sweating disturbances, and respiratory, gastrointestinal, musculoskeletal and skin manifestations. These veterans have been exposed to a variety of damaging or potentially damaging risk factors including environmental adversities, pesticides such as organophosphate chemicals, skin insect repellents, medical agents such as pyridostigmine bromide (NAPS), possible low-levels of chemical warfare agents, multiple vaccinations in combinations, depleted uranium, and other factors. A large number of basic research findings, clinical epidemiological studies, and case control studies are reviewed to try and link them together to produce a coherent picture and to demonstrate the complexity of the interaction of biological systems, environmental and genetic factors, combinations of drugs and toxins with human health. The findings of these studies so far have demonstrated that many of the previous assumptions made about the ‘safety’ of certain drugs and toxic substances or vaccines must be radically reviewed. Many of the findings have far reaching implications not only in terms of explanation of what might have gone wrong during the Gulf War, but also have wider implications for many occupational groups who are exposed daily to some of these risk factors. More open-mindedness and much less prejudice are required concerning the basic biology of interactions of the above factors and their effects on cell functions and wider intelligent research is urgently required with high priority. This review highlights the importance of intelligent research for answers for a new phenomenon, and demonstrates the necessity for a combination of this approach with high quality epidemiological research. The reader will notice an emerging clear picture that the majority (if not all) of these advances have been achieved from studies funded by independent or charity organizations rather than by the responsible authorities who are supposed and are duty bound to take on this task. http://www.ncbi.nlm.nih.gov/pubmed/9638279 Proceedings Of The National Academy Of Science USA • May 1998 Identification of rat susceptibility loci for adjuvant-oil-induced arthritis Author information Lorentzen JC1, Glaser A, Jacobsson L, Galli J, Fakhrai-rad H, Klareskog L, Luthman H. Department of Medicine, Rheumatology Unit CMM L8:04, Karolinska Hospital, S-171 76 Stockholm, Sweden johnny.lorentzen@cmm.ki.se Abstract One intradermal injection of incomplete Freund’s adjuvant-oil induces a T cell-mediated inflammatory joint disease in DA rats. Susceptibility genes for oil-induced arthritis (OIA) are located both within and outside the major histocompatibility complex (MHC, Oia1). We have searched for disease-linked non-MHC loci in an F2 intercross between DA rats and MHC-identical but arthritis-resistant LEW.1AV1 rats. A genome-wide scan with microsatellite markers revealed two major chromosome regions that control disease incidence and severity: Oia2 on chromosome 4 (P = 4 x 10(-13)) and Oia3 on chromosome 10 (P = 1 x 10(-6)). All animals homozygous for DA alleles at both loci developed severe arthritis, whereas all those homozygous for LEW.1AV1 alleles were resistant. These results have general implications for situations where nonspecific activation of the immune system (e.g., incomplete Freund’s adjuvant-oil) causes inflammation and disease, either alone or in conjunction with specific antigens. They may also provide clues to the etiology of inflammatory diseases in humans, including rheumatoid arthritis. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC27729/ “These results have general implications for situations where nonspecific activation of the immune system (e.g., incomplete Freund’s adjuvant-oil) causes inflammation and disease, either alone or in conjunction with specific antigens. They may also provide clues to the etiology of inflammatory diseases in humans, including rheumatoid arthritis.” Acta Virologica • June 1998 Neurologic complications associated with oral poliovirus vaccine and genomic variability of the vaccine strains after multiplication in humans Author information Friedrich F. Departamento de Virologia Instituto Oswaldo Cruz/FIOCRUZ Rio de Janeiro, RJ, Brazil Abstract The oral poliovirus vaccine (OPV) has been effectively used in the reduction and control of poliomyelitis cases on the planet. Despite several advantages of using the attenuated OPV strains, the rare occurrence of vaccine-associated paralytic poliomyelitis (VAPP) cases in vaccine recipients and their susceptible contacts is a disadvantage. Molecular biology studies of polioviruses isolated from stool and central nervous system (CNS) of patients with VAPP have confirmed the vaccine origin of the isolates and demonstrated genomic modifications known or suspected to increase the neurovirulence. Similar genomic modifications have also been identified in OPV-derived strains isolated from healthy vaccinees and healthy contacts, suggesting that host factors are also involved in the establishment of poliomyelitis. Other neurologic complications such as meningitis, encephalitis, convulsions, transverse myelitis and Guillain-Barré syndrome have also been rarely associated with the use of this vaccine. The characterization of polioviruses isolated from such cases has demonstrated their OPV origin. http://www.ncbi.nlm.nih.gov/pubmed/9842449 “Molecular biology studies of polioviruses isolated from stool and central nervous system (CNS) of patients with VAPP have confirmed the vaccine origin of the isolates and demonstrated genomic modifications known or suspected to increase the neurovirulence. Similar genomic modifications have also been identified in OPV-derived strains isolated from healthy vaccinees and healthy contacts, suggesting that host factors are also involved in the establishment of poliomyelitis. Other neurologic complications such as meningitis, encephalitis, convulsions, transverse myelitis and Guillain-Barré syndrome have also been rarely associated with the use of this vaccine.” Lancet • August 1998 Macrophagic myofasciitis: an emerging entity Groupe d’Etudes et Recherche sur les Maladies Musculaires Acquises et Dysimmunitaires (GERMMAD) de l’Association Française contre les Myopathies (AFM) Author information Gherardi RK1, Coquet M, Chérin P, Authier FJ, Laforêt P, Bélec L, Figarella-Branger D, Mussini JM, Pellissier JF, Fardeau M. Université Paris XII-Val de Marne Département de Pathologie, Hôpital Henri Mondor Créteil, France gherardi@univ-paris12.fr Abstract BACKGROUND An unusual inflammatory myopathy characterised by an infiltration of non-epithelioid histiocytic cells has been recorded with increasing frequency in the past 5 years in France. We reassessed some of these cases. METHODS We did a retrospective analysis of 18 such cases seen in five myopathology centres between May, 1993, and December, 1997. The myopathological changes were reassessed at a clinopathology seminar. FINDINGS Detailed clinical information was available for 14 patients. The main presumptive diagnoses were polymyositis and polymyalgia rheumatica. Symptoms included myalgias in 12 patients, arthralgias in nine, muscle weakness in six, pronounced asthenia in five, and fever in four. Abnormal laboratory findings were occasionally observed, and included raised creatine kinase concentrations, increased erythrocyte sedimentation rate, and myopathic electromyography. Muscle biopsy showed infiltration of the subcutaneous tissue, epimysium, perimysium, and perifascicular endomysium by sheets of large macrophages, with a finely granular PAS-positive content. Also present were occasional CD8 T cells, and inconspicuous muscle-fibre damage. Epithelioid and giant cells, necrosis, and mitotic figures were not seen. The images were easily distinguishable from sarcoid myopathy and fasciitis-panniculitis syndromes. Whipple’s disease, Mycobacterium avium intracellulare infection, and malakoplakia could not be confirmed. Ten patients were treated with various combinations of steroids and antibiotics; symptoms improved in eight patients, and stabilised in two. INTERPRETATION A new inflammatory muscle disorder of unknown cause, characterized by a distinctive pathological pattern of macrophagic myofasciitis, is emerging in France. http://www.ncbi.nlm.nih.gov/pubmed/?term=9717921 “A new inflammatory muscle disorder of unknown cause, characterised by a distinctive pathological pattern of macrophagic myofasciitis, is emerging in France.” Clinical Immunology And Immunopathology • October 1998 Serological association of measles virus and human herpesvirus-6 with brain autoantibodies in autism Author information Singh VK1, Lin SX, Yang VC. College of Pharmacy University of Michigan Ann Arbor, Michigan, 48109-1065, USA Abstract Considering an autoimmunity and autism connection, brain autoantibodies to myelin basic protein (anti-MBP) and neuron-axon filament protein (anti-NAFP) have been found in autistic children. In this current study, we examined associations between virus serology and autoantibody by simultaneous analysis of measles virus antibody (measles-IgG), human herpesvirus-6 antibody (HHV-6-IgG), anti-MBP, and anti-NAFP. We found that measlesIgG and HHV-6-IgG titers were moderately higher in autistic children but they did not significantly differ from normal controls. Moreover, we found that a vast majority of virus serology-positive autistic sera was also positive for brain autoantibody: (i) 90% of measles-IgG-positive autistic sera was also positive for anti-MBP; (ii) 73% of measles-IgG-positive autistic sera was also positive for anti-NAFP; (iii) 84% of HHV-6-IgG-positive autistic sera was also positive for anti-MBP; and (iv) 72% of HHV-6-IgG-positive autistic sera was also positive for anti-NAFP. This study is the first to report an association between virus serology and brain autoantibody in autism; it supports the hypothesis that a virus-induced autoimmune response may play a causal role in autism. http://www.ncbi.nlm.nih.gov/pubmed/9756729 “This study is the first to report an association between virus serology and brain autoantibody in autism; it supports the hypothesis that a virus-induced autoimmune response may play a causal role in autism.” Pediatrics • November 1998 Report of a US public health service workshop on hypotonic-hyporesponsive episode (HHE) after pertussis immunization Author information Braun MM1, Terracciano G, Salive ME, Blumberg DA, Vermeer-de Bondt PE, Heijbel H, Evans G, Patriarca PA, Ellenberg SS. Center for Biologics Evaluation and Research, Food and Drug Administration Rockville, MD 20852, USA Abstract Hypotonic-hyporesponsive episode (HHE) is a term used to describe a somewhat heterogenous group of clinical disorders that have been reported primarily in association with whole-cell pertussis vaccination. A 1991 review by the Institute of Medicine determined that the evidence available was indeed consistent with a causal relation between whole-cell pertussis-diphtheria-tetanus immunization and HHE, but that the evidence was insufficient to indicate a causal relationship between HHE and the subsequent development of permanent neurologic damage. More recent data from clinical trials conducted in Europe suggest that HHE also occurs after vaccination with acellular pertussis vaccines. The US Food and Drug Administration, in collaboration with the US Public Health Service, sponsored a workshop on HHE in Rockville, Maryland, on June 19, 1997. The primary goals of the workshop were to develop a case definition of HHE and to evaluate the general design and feasibility of possible studies of HHE using the federal Vaccine Adverse Event Reporting System (VAERS), a national passive surveillance system. The goals of such studies would be to understand better the acute HHE event and to evaluate the possibility of long-term sequelae. Case Definition. There has been no generally accepted definition of HHE, and a standard definition would be useful for vaccine safety work and would potentially facilitate interstudy comparisons of the growing number of licensed vaccines containing acellular pertussis components. The workshop defined HHE as an event of sudden onset occurring within 48 hours of immunization, with duration of the episode ranging from 1 minute to 48 hours, in children younger than 10 years of age. All of the following must be present: 1) limpness or hypotonia, 2) reduced responsiveness or hyporesponsiveness, and 3) pallor or cyanosis or failure to observe or to recall skin coloration. HHE is not considered to have occurred if there is a known cause for these signs (eg, postictal), if urticaria is present during the event, if normal skin coloration is observed throughout the episode, or if the child is simply sleeping. This inclusive (sensitive) case definition will allow investigators, through the technique of stratification according to certain characteristics (eg, time from vaccination to onset of HHE), to attempt to hone the definition and make it more specific. Refinement of the definition of HHE has been hindered by the lack of information on its pathophysiology and by the lack of pathognomonic signs, symptoms, and diagnostic tests. Another hindrance is that by the time the child presents for medical evaluation, the signs of HHE often have normalized. Moreover, different mechanisms may be involved in different individuals whose events meet this workshop’s HHE definition. Probably the most important question about HHE is whether it has any permanent sequelae. The workshop assessed the possible contribution VAERS-based studies could make to answering this question and found substantial methodologic problems; however, ongoing studies in Sweden and The Netherlands have the potential to provide useful information on this question. The most useful contribution of VAERS data would be in a descriptive study of HHE, with a possible case-control study of factors that may affect the risk of HHE after vaccination, rather than a study of possible permanent sequelae. The workshop participants felt that a detailed descriptive study of approximately 100 HHE events reported during a 1- to 2-year period could provide a more in-depth description of HHE cases in greater numbers than has been published previously, but the study would not address the issue of long-term sequelae of HHE. Better descriptive data may lead to new hypotheses concerning risk factors, etiology, and pathophysiology of HHE that might be evaluated further by studying subsequent cases and controls from VAERS or from other sources. http://www.ncbi.nlm.nih.gov/pubmed/9794982 Journal Of Dental Research • November 1998 Toxicity of formaldehyde to human oral fibroblasts and epithelial cells: influences of culture conditions and role of thiol status Author information Nilsson JA1, Zheng X, Sundqvist K, Liu Y, Atzori L, Elfwing A, Arvidson K, Grafström RC. Division of Experimental Carcinogenesis Institute of Environmental Medicine Karolinska Institutet, Stockholm, Sweden Abstract The toxicity of formaldehyde, a monomer released from certain polymeric dental materials, was studied in cultured human oral fibroblasts and epithelial cells. The influences of growth conditions were evaluated for both cell types, as well as the role of the internal and external thiol states. A one-hour exposure to formaldehyde decreased the colonyforming efficiency (CFE) of both cell types in a concentration-dependent manner, although the toxicity varied up to 100-fold with the conditions. Clearly, the presence of serum and the thiol cysteine counteracted the toxicity in fibroblasts. Similarly, pituitary extract and cysteine, or a mixture of amino acids and ethanolamines, counteracted the formaldehyde toxicity in serum-free cultures of epithelial cells. In contrast, a growthpromoting surface matrix of fibronectin and collagen did not influence the formaldehyde toxicity, as shown by both the CFE assay and a dye reduction assay. Further, a shortterm change to the various growth media per se with or without the supplements serum or cysteine did not significantly alter the CFE. Analysis of the thiol state demonstrated significant differences between epithelial cells and fibroblasts, i.e., comparatively lower cellular levels of the free low-molecular-weight thiols glutathione and cysteine in fibroblasts. This result correlated to significantly higher formaldehyde toxicity in the fibroblasts than in the epithelial cells. Taken together, the results indicated the cytoprotective function of both intracellular and extracellular thiols toward formaldehyde, as well as the usefulness of thiol-free and chemically defined conditions for toxicity assessments in oral epithelial cells and fibroblasts. We conclude that the combined use of a controlled external milieu and the presumed target cell type may be advantageous in evaluations of oral toxicity mechanisms or the toxic potency of dental materials, particularly those which, like formaldehyde, may react with thiols or amines. http://www.ncbi.nlm.nih.gov/pubmed/?term=9823728 “A one-hour exposure to formaldehyde decreased the colony-forming efficiency of both cell types in a concentration-dependent manner, although the toxicity varied up to 100-fold with the conditions.” Scandinavian Journal Of Immunology • January 1999 Identification of arthritogenic adjuvants of self and foreign origin Author information Lorentzen JC. Department of Medicine, Karolinska Hospital Karolinska Institute, Stockholm, Sweden Abstract The lack of defined triggers for human inflammatory joint diseases warrants efforts to identify candidate molecules. For this task, it may be an important lead that nonspecific activation of the immune system can precipitate arthritis in rats. Consequently, arthritis-prone rat strains were used to search for disease-triggering factors among molecules which initially induce innate defence reactions rather than specific immune responses. A variety of immunological adjuvants were investigated by intradermal injection into DA and LEW.1AV1 rats and monitoring of clinical signs for 30 days. Several arthritogenic cell-wall structures from yeast and bacteria were identified, such as beta-glucan, lipopolysaccharide and trehalosedimycolate. The test procedures also revealed arthritogens of chemical origin, such as dioctadecyldiammoniumbromide (DDA = C38H80NBr) and heptadecane (C17H36). Furthermore, it allowed the precise definition of arthritogenic determinants of lipids, since C16H34 induced arthritis, whereas the closely related linear hydrocarbons C16H32, C16H33Br and C15H32 did not. The observed pathogenicity of organic lipids raised the question of whether endogenous lipids can also precipitate arthritis. Indeed, this was true for the cholesterol precursor squalene (C30H50). In conclusion, this article describes the rational use of arthritis-prone rat strains to identify arthritogenic factors of both foreign and self origin. Although structurally unrelated, the pathogenic molecules defined here share the feature of being nonspecific triggers of the immune system. This consolidates a general principle for the induction of adjuvant arthritis which may provide clues to the aetiology of human arthritides, including rheumatoid arthritis. http://www.ncbi.nlm.nih.gov/pubmed/?term=10023856 “The observed pathogenicity of organic lipids raised the question of whether endogenous lipids can also precipitate arthritis. Indeed, this was true for the cholesterol precursor squalene ...” Archives Of Toxicology • February 1999 Effects of 2-phenoxyethanol on N-methyl-D-aspartate (NMDA) receptor-mediated ion currents Author information Musshoff U1, Madeja M, Binding N, Witting U, Speckmann EJ. Institut für Physiologie Universität Münster, Germany mushoff@uni-muenster.de Abstract The actions were examined of 17 frequently used glycol ether compounds on the glutamate receptor-mediated ion currents. The receptors were expressed in Xenopus oocytes by injection of rat brain mRNA. Most of the 17 glycol ethers exerted no effects on the glutamate subreceptors activated by kainate and N-methyl-D-aspartate (NMDA), whereas 2-phenoxyethanol (ethylene glycol monophenyl ether) caused a considerable reduction of NMDA-induced membrane currents in a reversible and concentration-dependent manner. The threshold concentration of the ethylene glycol monophenyl ether effect was < 10 mumol/l. The concentration for a 50% inhibition (IC50) was approximately 360 mumol/l. The results indicate a neurotoxic potential for 2-phenoxyethanol. http://www.ncbi.nlm.nih.gov/pubmed/?term=10207615 “The results indicate a neurotoxic potential for 2-phenoxyethanol.” [2-phenoxyethanol is a vaccine ingredient] Epidemiology • May 1999 Hepatitis B vaccine and liver problems in U.S. children less than 6 years old 1993 and 1994 Author information Fisher MA1, Eklund SA. Department of Epidemiology University of Michigan Ann Arbor 48109, USA Abstract Data to assess the benefits and risks of hepatitis B vaccine for the general population of U.S. children are sparse. This study addressed the problem of external validity found in previous studies of high risk populations by evaluating the benefit of hepatitis B vaccination for the general population of American children. We calculated the risk of liver problems among hepatitis B vaccinated and non-hepatitis B vaccinated children using logistic regression. Hepatitis B vaccinated children had an unadjusted odds ratio of 2.94 and age-adjusted odds ratio of 2.35 for liver problems compared with non-hepatitis B vaccinated children in the 1993 National Health Interview Survey. Hepatitis B vaccinated children had an unadjusted odds ratio of 2.57 and age-adjusted odds ratio of 1.53 for liver problems compared with non-hepatitis B vaccinated children in the 1994 National Health Interview Survey dataset. http://www.ncbi.nlm.nih.gov/pubmed/10230847 “Hepatitis B vaccinated children had an unadjusted odds ratio of 2.94 and age-adjusted odds ratio of 2.35 for liver problems compared with non-hepatitis B vaccinated children in the 1993 National Health Interview Survey.” Vaccine • July 1999 An overview of the vaccine adverse event reporting system (VAERS) as a surveillance system VAERS Working Group Author information Singleton JA1, Lloyd JC, Mootrey GT, Salive ME, Chen RT. Vaccine Safety and Development Activity National Immunization Program Centers for Disease Control and Prevention Atlanta, GA 30333, USA Abstract We evaluated the Vaccine Adverse Event Reporting System (VAERS), the spontaneous reporting system for vaccine-associated adverse events in the United States, as a public health surveillance system, using evaluation guidelines from the Centers for Disease Control and Prevention. We found that VAERS is simple for reporters to use, flexible by design and its data are available in a timely fashion. The predictive value positive for one severe event is known to be high, but for most events is unknown. The acceptability, sensitivity and representativeness of VAERS are unknown. The study of vaccine safety is complicated by underreporting, erroneous reporting, frequent multiple exposures and multiple outcomes. http://www.ncbi.nlm.nih.gov/pubmed/?term=10438063 “The acceptability, sensitivity and representativeness of VAERS are unknown. The study of vaccine safety is complicated by underreporting, erroneous reporting, frequent multiple exposures and multiple outcomes.” “... A non specific permeabilization of the Blood Brain Barrier ...” Pharmaceutical Research • December 1999 Indirect evidence that drug brain targeting using polysorbate 80-coated polybutylcyanoacrylate nanoparticles is related to toxicity Author information Olivier JC1, Fenart L, Chauvet R, Pariat C, Cecchelli R, Couet W. Laboratoire de Pharmacie Galénique et Biopharmacie UPRES EA 1223 34, Poitiers, France jc.olivier@campus.univ-poitiers.fr Abstract PURPOSE To investigate the mechanism underlying the entry of the analgesic peptide dalargin into brain using biodegradable polybutylcyanoacrylate (PBCA) nanoparticles (NP) overcoated with polysorbate 80. METHODS The investigations were carried out with PBCA NP and with non biodegradable polystyrene (PS) NP (200 nm diameter). Dalargin adsorption was assessed by HPLC. Its entry into the CNS in mice was evaluated using the tail-flick procedure. Locomotor activity measurements were performed to compare NP toxicities. BBB permeabilization by PBCA NP was studied in vitro using a coculture of bovine brain capillary endothelial cells and rat astrocytes. RESULTS Dalargin loading was 11.7 microg/mg on PBCA NP and 16.5 microg/ mg on PS NP. Adding polysorbate 80 to NP led to a complete desorption. Nevertheless, dalargin associated with PBCA NP and polysorbate 80 induced a potent and prolonged analgesia, which could not be obtained using PS NP in place of PBCA NP. Locomotor activity dramatically decreased in mice dosed with PBCA NP, but not with PS NP. PBCA NP also caused occasional mortality. In vitro, PBCA NP (10 microg/ml) induced a permeabilization of the BBB model. CONCLUSIONS A non specific permeabilization of the BBB, probably related to the toxicity of the carrier, may account for the CNS penetration of dalargin associated with PBCA NP and polysorbate 80. http://www.ncbi.nlm.nih.gov/pubmed/10644071 Acta Paediatrica • January 2000 Gait disturbance interpreted as cerebellar ataxia after MMR vaccination at 15 months of age: a follow-up study Author information Plesner AM1, Hansen FJ, Taudorf K, Nielsen LH, Larsen CB, Pedersen E. Department of Epidemiology Statens Serum Institute Copenhagen, Denmark Abstract Measles, mumps and rubella (MMR) vaccination was included in the Danish childhood vaccination programme in 1987. During the following 10-y period, 550 notification records of adverse events after MMR vaccination at 15 mo of age have been registered, and a total of 41 notifications have included “gait disturbance”. This corresponds to a frequency of 8 per 100,000 doses of MMR vaccine used for 15-mo-old children. The symptoms and signs are characteristic of cerebellar ataxia. In 28 notifications, the descriptions by the doctors included only “gait disturbance”, while in 13 an additional interpretation was included. Thirty-two parents (78%) filled in a questionnaire and 26 (63%) agreed to participate in a clinical follow-up study. The gait disturbance symptoms mainly occurred 7-14 d after the vaccination, and the duration was median 1-2 wk (range 1 d to more than 4 mo). One-third of the children had symptoms lasting more than 2 wk. Significantly more children with long duration of symptoms had some kind of complaint or clinical signs at the follow-up in 1997. Gait disturbance registered after MMR vaccination seems to be more frequent than hitherto reported. Most cases are mild and short-lasting and a longer duration of symptoms seems to be predictive of late sequelae. A clinical diagnosis of cerebellar ataxia after MMR and the exact frequency of this adverse event remains to be tested in prospective studies. http://www.ncbi.nlm.nih.gov/pubmed/10677059 “Gait disturbance registered after MMR vaccination seems to be more frequent than hitherto reported. Most cases are mild and short-lasting and a longer duration of symptoms seems to be predictive of late sequelae.” Clinical And Experimental Rheumatology • January 2000 Immune-mediated pathology following hepatitis B vaccination. Two cases of polyarteritis nodosa and one case of pityriasis rosea-like drug eruption Author information De Keyser F1, Naeyaert JM, Hindryckx P, Elewaut D, Verplancke P, Peene I, Praet M, Veys E. Department of Rheumatology University Hospital Gent, Belgium Filip.Dekeyser@rug.ac.be Abstract The association of hepatitis B virus infection and vasculitis or other immunemediated manifestations is well documented. Reports on such manifestations in relation to hepatitis B vaccination are scarce, however. We report 2 patients who developed polyarteritis nodosa following vaccination against hepatitis B. In one patient this resulted in an ischemic and necrotic digital ulcus, necessitating surgical amputation. The other patient presented with typical cutaneous polyarteritis nodosa which responded well to corticosteroid treatment. A third patient developed a severe pityrias rosea-like eruption. He was treated with topical steroids with healing of the lesions, leaving only post-inflammatory hyperpigmentation. The literature on these associations is reviewed. http://www.ncbi.nlm.nih.gov/pubmed/10728450 “We report 2 patients who developed polyarteritis nodosa following vaccination against hepatitis B. In one patient this resulted in an ischemic and necrotic digital ulcus, necessitating surgical amputation. The other patient presented with typical cutaneous polyarteritis nodosa which responded well to corticosteroid treatment. A third patient developed a severe pityrias rosea-like eruption. He was treated with topical steroids with healing of the lesions, leaving only post-inflammatory hyperpigmentation.” Journal Of Autoimmunity • February 2000 Vaccination and autoimmunity’vaccinosis’: a dangerous liaison? Author information Shoenfeld Y1, Aron-Maor A. Department of Internal Medicine B, Sheba Medical Center, Tel Hashomer, Israel shoefel@post.tau.ac.il Abstract The question of a connection between vaccination and autoimmune illness (or phenomena) is surrounded by controversy. A heated debate is going on regarding the causality between vaccines, such as measles and anti-hepatitis B virus (HBV), and multiple sclerosis (MS). Brain antibodies as well as clinical symptoms have been found in patients vaccinated against those diseases. Other autoimmune illnesses have been associated with vaccinations. Tetanus toxoid, influenza vaccines, polio vaccine, and others, have been related to phenomena ranging from autoantibodies production to full-blown illness (such as rheumatoid arthritis (RA)). Conflicting data exists regarding also the connection between autism and vaccination with measles vaccine. So far only one controlled study of an experimental animal model has been published, in which the possible causal relation between vaccines and autoimmune findings has been examined: in healthy puppies immunized with a variety of commonly given vaccines, a variety of autoantibodies have been documented but no frank autoimmune illness was recorded. The findings could also represent a polyclonal activation (adjuvant reaction). The mechanism (or mechanisms) of autoimmune reactions following immunization has not yet been elucidated. One of the possibilities is molecular mimicry; when a structural similarity exists between some viral antigen (or other component of the vaccine) and a self-antigen. This similarity may be the trigger to the autoimmune reaction. Other possible mechanisms are discussed. Even though the data regarding the relation between vaccination and autoimmune disease is conflicting, it seems that some autoimmune phenomena are clearly related to immunization (e.g. Guillain-Barre syndrome). The issue of the risk of vaccination remains a philosophical one, since to date the advantages of this policy have not been refuted, while the risk for autoimmune disease has not been irrevocably proved. We discuss the pros and cons of this issue (although the temporal relationship (i.e. always 2-3 months following immunization) is impressive). http://www.ncbi.nlm.nih.gov/pubmed/10648110 “Even though the data regarding the relation between vaccination and autoimmune disease is conflicting, it seems that some autoimmune phenomena are clearly related to immunization (e.g. Guillain-Barre syndrome).” Journal Of Manipulative And Physiological Therapeutics • February 2000 Effects of diphtheria-tetanus-pertussis or tetanus vaccination on allergies and allergy-related respiratory symptoms among children and adolescents in the United States Author information Hurwitz EL1, Morgenstern H. Abstract BACKGROUND Findings from animal and human studies confirm that diphtheria and tetanus toxoids and pertussis (DTP) and tetanus vaccinations induce allergic responses; associations between childhood vaccinations and subsequent allergies have been reported recently. “DTP or tetanus vaccination OBJECTIVE The association of DTP or tetanus vaccination with allergies and allergy-related respiratory symptoms among children and adolescents in the United States was assessed. and related respiratory symptoms METHODS Data were used from the Third National Health and Nutrition Examination Survey on infants aged 2 months through adolescents aged 16 years. DTP or tetanus vaccination, lifetime allergy history, and allergy symptoms in the past 12 months were based on parental or guardian recall. Logistic regression modeling was performed to estimate the effects of DTP or tetanus vaccination on each allergy. RESULTS The odds of having a history of asthma was twice as great among vaccinated subjects than among unvaccinated subjects (adjusted odds ratio, 2.00; 95% confidence interval, 0.59 to 6.74). The odds of having had any allergy-related respiratory symptom in the past 12 months was 63% greater among vaccinated subjects than unvaccinated subjects (adjusted odds ratio, 1.63; 95% confidence interval, 1.05 to 2.54). The associations between vaccination and subsequent allergies and symptoms were greatest among children aged 5 through 10 years. CONCLUSIONS DTP or tetanus vaccination appears to increase the risk of allergies and related respiratory symptoms in children and adolescents. Although it is unlikely that these results are entirely because of any sources of bias, the small number of unvaccinated subjects and the study design limit our ability to make firm causal inferences about the true magnitude of effect. http://www.ncbi.nlm.nih.gov/pubmed/?term=10714532 appears to increase the risk of allergies in children and adolescents.” American Journal Of Epidemiology • March 2000 Outbreak of aseptic meningitis associated with mass vaccination with a urabe-containing measles-mumps-rubella vaccine: implications for immunization programs Author information Dourado I1, Cunha S, Teixeira MG, Farrington CP, Melo A, Lucena R, Barreto ML. Instituto de Saúde Coletiva Universidade Federal da Bahia Salvador, Brazil Abstract A mass immunization campaign with a Urabe-containing measles-mumps-rubella vaccine was carried out in 1997 in the city of Salvador, northeastern Brazil, with a target population of children aged 1-11 years. There was an outbreak of aseptic meningitis following the mass campaign. Cases of aseptic meningitis were ascertained through data collected from the records of children admitted to the local referral hospital for infectious diseases between March and October of 1997, using previously defined eligibility criteria. Vaccination histories were obtained through home visits or telephone calls. Eighty-seven cases fulfilled the study criteria. Of those, 58 cases were diagnosed after the vaccination campaign. An elevated risk of aseptic meningitis was observed 3 weeks after Brazil’s national vaccination day compared with the risk in the prevaccination period (relative risk = 14.3; 95% confidence interval: 7.9, 25.7). This result was confirmed by a case series analysis (relative risk = 30.4; 95% confidence interval: 11.5, 80.8). The estimated risk of aseptic meningitis was 1 in 14,000 doses. This study confirms a link between measles-mumps-rubella vaccination and aseptic meningitis. The authors discuss the implications of this for the organization and planning of mass immunization campaigns. http://www.ncbi.nlm.nih.gov/pubmed/10707922 Full Report: http://aje.oxfordjournals.org/content/151/5/524.long “An elevated risk of aseptic meningitis was observed 3 weeks after Brazil’s national vaccination day compared with the risk in the prevaccination period (relative risk = 14.3; 95% confidence interval: 7.9, 25.7). This result was confirmed by a case series analysis (relative risk = 30.4; 95% confidence interval: 11.5, 80.8). The estimated risk of aseptic meningitis was 1 in 14,000 doses. This study confirms a link between measles-mumps-rubella vaccination and aseptic meningitis.” The Israel Medical Association Journal • March 2000 Gender differences in the reactogenicity of measles-mumps-rubella vaccine Author information Shohat T1, Green MS, Nakar O, Ballin A, Duvdevani P, Cohen A, Shohat M. Israel Center for Disease Control Gertner Institute for Policy Research Tel-Hashomer, Israel shohat@trendline.co.il Abstract BACKGROUND In trials comparing different formulations of measles vaccine, excess non-specific mortality occurred in female children who received high titer vaccine. These findings suggest a genderspecific effect of measles vaccine. OBJECTIVES To determine whether gender differences exist in the rates of adverse reactions and morbidity in the month following immunization with measles-containing vaccine, and to evaluate whether there is a gender-specific association between the humoral immune response to measles vaccination and post-vaccination morbidity. METHODS Parents completed questionnaires on the health status of 755 infants aged 15-20 months, during the month preceding and the month following the measles-mumps-rubella vaccination. Blood samples were tested for measles antibody titers in a subsample of 237 infants. “Our findings demonstrate higher rates of adverse effects in females following vaccination with MMR vaccine, irrespective of the humoral response. This study RESULTS After controlling background morbidity in the infants, the relative risk of fever and rash following vaccination was 2.35 in females and 1.36 in males. The geometric mean antibody titers against measles were similar in both sexes and there was no significant association between antibody titer and post-vaccination morbidity in either sex. emphasizes the need to consider CONCLUSIONS Our findings demonstrate higher rates of adverse effects in females following vaccination with MMR vaccine, irrespective of the humoral response. This study emphasizes the need to consider possible gender differences when evaluating new vaccines. evaluating new vaccines.” http://www.ncbi.nlm.nih.gov/pubmed/?term=10774264 Full Report: http://www.ima.org.il/FilesUpload/IMAJ/0/61/30887.pdf possible gender differences when Digestive Diseases And Science • April 2000 Detection and sequencing of measles virus from peripheral mononuclear cells from patients with inflammatory bowel disease and autism Author information Kawashima H1, Mori T, Kashiwagi Y, Takekuma K, Hoshika A, Wakefield A. Department of Paediatrics Tokyo Medical University, Japan Abstract It has been reported that measles virus may be present in the intestine of patients with Crohn’s disease. Additionally, a new syndrome has been reported in children with autism who exhibited developmental regression and gastrointestinal symptoms (autistic enterocolitis), in some cases soon after MMR vaccine. It is not known whether the virus, if confirmed to be present in these patients, derives from either wild strains or vaccine strains. In order to characterize the strains that may be present, we have carried out the detection of measles genomic RNA in peripheral mononuclear cells (PBMC) in eight patients with Crohn’s disease, three patients with ulcerative colitis, and nine children with autistic enterocolitis. As controls, we examined healthy children and patients with SSPE, SLE, HIV-1 (a total of eight cases). RNA was purified from PBMC by Ficoll-paque, followed by reverse transcription using AMV; cDNAs were subjected to nested PCR for detection of specific regions of the hemagglutinin (H) and fusion (F) gene regions. Positive samples were sequenced directly, in nucleotides 8393-8676 (H region) or 5325-5465 (from noncoding F to coding F region). One of eight patients with Crohn disease, one of three patients with ulcerative colitis, and three of nine children with autism, were positive. Controls were all negative. The sequences obtained from the patients with Crohn’s disease shared the characteristics with wild-strain virus. The sequences obtained from the patients with ulcerative colitis and children with autism were consistent with being vaccine strains. The results were concordant with the exposure history of the patients. Persistence of measles virus was confirmed in PBMC in some patients with chronic intestinal inflammation. http://www.ncbi.nlm.nih.gov/pubmed/10759242 “The sequences obtained from the patients with ulcerative colitis and children with autism were consistent with being vaccine strains. The results were concordant with the exposure history of the patients. Persistence of measles virus was confirmed in PBMC in some patients with chronic intestinal inflammation.” BMJ • May 2000 Role of vaccinations as risk factors for ill health in veterans of the Gulf war: cross sectional study Author information Hotopf M1, David A, Hull L, Ismail K, Unwin C, Wessely S. Gulf War Research Unit King’s College and St Thomas’s School of Medicine King’s College London, London SE5 8AZ m.hotopf@iop.kcl.ac.uk Abstract OBJECTIVES To explore the relation between ill health after the Gulf war and vaccines received before or during the conflict. To test the hypothesis that such ill health is limited to military personnel who received multiple vaccines during deployment and that pesticide use modifies any effect. DESIGN Cross sectional study of Gulf war veterans followed for six to eight years after deployment. SETTING UK armed forces. PARTICIPANTS Military personnel who served in the Gulf and who still had their vaccine records. MAIN OUTCOME MEASURES Multisymptom illness as classified by the Centers for Disease Control and Prevention; fatigue; psychological distress; post-traumatic stress reaction; health perception; and physical functioning. RESULTS The response rate for the original survey was 70.4% (n=3284). Of these, 28% (923) had vaccine records. Receipt of multiple vaccines before deployment was associated with only one of the six health outcomes (post-traumatic stress reaction). By contrast five of the six outcomes (all but post-traumatic stress reaction) were associated with multiple vaccines received during deployment. The strongest association was for the multisymptom illness (odds ratio 5.0; 95% confidence interval 2.5 to 9.8). CONCLUSION Among veterans of the Gulf war there is a specific relation between multiple vaccinations given during deployment and later ill health. Multiple vaccinations in themselves do not seem to be harmful but combined with the “stress” of deployment they may be associated with adverse health outcomes. These results imply that every effort should be made to maintain routine vaccines during peacetime. Full Report: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC27378/ “Among veterans of the Gulf war there is a specific relation between multiple vaccinations given during deployment and later ill health.” American Journal Of Pathology • June 2000 The Endogenous Adjuvant Squalene Can Induce a Chronic T-Cell-Mediated Arthritis in Rats Barbro C. Carlson,* Åsa M. Jansson,* Anders Larsson,† Anders Bucht,‡* and Johnny C. Lorentzen* From the Department of Medicine,* Unit of Rheumatology, Karolinska Institutet, Stockholm the Department of Medical Sciences,† University Hospital, Uppsala and the Department of Biomedicine,‡ Division of NBC Defense, Defense Research Establishment Umeå, Sweden Abstract Squalene is a cholesterol precursor, which stimulates the immune system nonspecifically. We demonstrate that one intradermal injection of this adjuvant lipid can induce joint-specific inflammation in arthritis-prone DA rats. Histopathological and immunohistochemical analyses revealed erosion of bone and cartilage, and that development of polyarthritis coincided with infiltration of ∼∼+ T cells. Depletion of these cells with anti-∼∼ TcR monoclonal antibody (R73) resulted in complete recovery, whereas antiCD8 and anti-∼∼ TcR injections were ineffective. The apparent dependence on CD4+ T cells suggested a role for genes within the major histocompatibility complex (MHC), and this was concluded from comparative studies of MHC congenic rat strains, in which DA.1H rats were less susceptible than DA rats. Furthermore, LEW.1AV1 and PVG.1AV1 rats with MHC identical to DA rats were arthritis-resistant, demonstrating that non-MHC genes also determine susceptibility. Some of these genetic influences could be linked to previously described arthritis susceptibility loci in an F2 intercross between DA and LEW.1AV1 rats (ie, Cia3, Oia2 and Cia5). Interestingly, some F2 hybrid rats developed chronic arthritis, a phenotype not apparent in the parental inbred strains. Our demonstration that an autoadjuvant can trigger chronic, immune-mediated joint-specific inflammation may give clues to the pathogenesis of rheumatoid arthritis, and it raises new questions concerning the role of endogenous molecules with adjuvant properties in chronic inflammatory diseases. In conclusion, arthritis induced with the cholesterol precursor squalene shares notable similarities with rheumatoid arthritis, and raises interesting questions concerning the role of endogenous molecules with adjuvant properties in chronic inflammatory diseases. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1850095/ “arthritis induced with the cholesterol precursor squalene shares notable similarities with rheumatoid arthritis, and raises interesting questions concerning the role of endogenous molecules with adjuvant properties in chronic inflammatory diseases.” First International Conference on Metals & The Brain September 20-23, 2000 From Neurochemistry to Neurodegeneration University of Padova, Italy Aluminum And Health Recommendations Aluminum is an environmentally abundant element to which we are all exposed. The neurotoxicity of this metal has been known for more than a century. More recently, it has been implicated as an etiological factor in some pathologies (including encephalopathy, bone disease, anemia) related to dialysis treatment . In addition, it has been hypothesized to be a cofactor in the etiopathogenesis of some neurodegenerative diseases, including Alzheimer’s disease (AD), although, despite many studies in several laboratories in different countries, direct evidence is still, so far controversial. Thus, examples of aluminum neurotoxicity are well recognized-in experimental animals and in individuals with renal failure (consequent upon aging, intoxication or renal disease) - and there are grounds to link neurodegenerative disorders to aluminum exposure. Furthermore, an increased concentration of Al in infant formulas and in solutions for home parenteral nutrition has been associated with neurological consequences and metabolic bone disease, characterized by low-bone formation rate, respectively. For all these reasons and on the basis of our many years of scientific experience in this field, we propose the following recommendations as guidelines to avoid risks due to aluminum accumulation and potential intoxication. These recommendations are not rigid and will be updated when relevant new scientific data is available. General Recommendations 1. It would be valuable to define as completely as possible which patient groups are at risk for iatrogenic aluminum loading, and under which conditions aluminum represents a health hazard. The more complete knowledge we have for the clinical, iatrogenic setting, the better basis we will have to judge whether different types of aluminum exposure are hazardous to the general population or to susceptible subgroups. 2. A provisional list of patients groups at risk of iatrogenic aluminum loading should include, at least, people with impaired renal function, infants, old people and patients on total home parenteral nutrition. Where such exposure occurs, serum aluminum concentrations should be less than 30 μg/l and possibly lower. However, further studies are necessary. 8. It is recommended that acidic food, e.g., acid cabbage, tomato, etc. should not be cooked or stored in aluminum ware. In this connection, it has been demonstrated that in the juice of acidic cabbage, cooked in aluminum, the metal ion content is up to 20 mg/ L. 3. Urinary aluminum is also an indicator of aluminum absorption, the excreted Al/retained Al ratio depends on the integrity of the renal function. 9. Individual susceptibility to aluminum has been reported by the scientific literature. Thus, special efforts should be taken to prevent contamination of food and beverages etc. with aluminum either directly or during preparation, with special regard to infants, old people or individuals with suboptimal renal functionality. 4. Al may enter human body by mouth, intravenous infusions and by environment. Specific controls have to be adopted in order to reduce each risk of exposure. Oral Exposure 5. Aluminum in drinking water should be less than 50 μg L-1. Silicon is relevant to aluminum toxicity and, therefore, the water silicon concentrations should be monitored in parallel. 6. The aluminum content should be declared in all food preparations and pharmacological products. 7. Citrate-containing compounds appear to increase the bioavailability of ingested aluminum. Therefore, particular care should be taken to avoid these compounds in combination with Al-containing drugs. With citric acid, the enhanced gastrointestinal absorption may by compensated for by a parallel increase in urinary Al excretion, where there is good renal function. However, it is strongly suspected from recent simulation studies that other dietary acids (e.g., succinic and tartaric acids) also increase Al-bioavailability but do not cause any compensatory increase in urinary excretion. Ascorbate and lactate also significantly enhance gastrointestinal absorption of Al, as was recently demonstrated in animal studies. www.laleva.cc/environment/aluminum_health.html 10. Magnesium depletion is considered a high risk for aluminum accumulation especially during pregnancy and in the neonate with possible consequent problems for normal development and growth. Magnesium depletion is also common with aging. 11. Iron depletion is considered a high risk for aluminium accumulation, as iron and Al share common carriers. Parenteral Exposure 12. Aluminum in all intravenous (i.v.) fluids should be controlled monitored and labeled. There is a general consensus that the aluminum content of i.v. fluids used in children and adults with renal failure or undergoing dialysis, should be as low as possible and in any case no higher than 10 μg/L. 13. The use of parenteral nutrition fluids that are high in aluminum should be eliminated or significantly reduced. This document will be published in relevant scientific journals, and will be sent to all Health Ministers of the European Community as well as to other Public Health Authorities. (FDA, WHO etc.). For further information, please contact Prof. P. Zatta: zatta@civ.bio.unipd.it BMJ • December 2000 Routine vaccinations and child survival: follow up study in Guinea-Bissau, West Africa Ines Kristensen, physician,a Peter Aaby, anthropologist,a and Henrik Jensen, statisticianb aBandim Health Project, Apartado 861, Bissau Guinea-Bissau, bDanish Epidemiology Science Centre Statens Serum Institut, Copenhagen, Denmark Contributors: IK supervised the last year of data collection and wrote the first draft of the paper. HJ supervised data control and carried out the statistical analyses. PA initiated the study, supervised data collection, carried out the first analyses, and wrote the final version of the paper. HJ and PA will act as guarantors. Abstract Main Outcome Measures Infant mortality over six months (between age 0-6 months and 7-13 months for BCG, diphtheria, tetanus, and pertussis, and polio vaccines and between 7-13 months and 14-20 months for measles vaccine). Results Mortality was lower in the group vaccinated with any vaccine compared with those not vaccinated, the mortality ratio being 0.74 (95% confidence interval 0.53 to 1.03). After cluster, age, and other vaccines were adjusted for, BCG was associated with significantly lower mortality (0.55 (0.36 to 0.85)). However, recipients of one dose of diphtheria, tetanus, and pertussis or polio vaccines had higher mortality than children who had received none of these vaccines (1.84 (1.10 to 3.10) for diphtheria, tetanus, and pertussis). Recipients of measles vaccine had a mortality ratio of 0.48 (0.27 to 0.87). When deaths from measles were excluded from the analysis the mortality ratio was 0.51 (0.28 to 0.95). Estimates were unchanged by controls for background factors. Design Follow up study. Conclusions These trends are unlikely to be explained exclusively by selection biases since different vaccines were associated with opposite tendencies. Measles and BCG vaccines may have beneficial effects in addition to protection against measles and tuberculosis. Diphtheria, tetanus, and pertussis and polio vaccines were associated with higher infant mortality. Participants 15 351 women and their children born during 1990 and 1996. Full Report: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC27544/ Objective To examine the association between routine childhood vaccinations and survival among infants in Guinea-Bissau. Setting Rural Guinea-Bissau. “Diphtheria, tetanus, and pertussis and polio vaccines were associated with higher infant mortality.” “... in rats, the pertussis component of DTPoP acts on the cardiovascular system and disturbs its circadian rhythm.” Laboratory Animals • 2000 Disturbance of cardiovascular circadian rhythms by pertussis vaccine in freely-moving rats W. Vleeming, A. van de Kuil, J. D. te Biesebeek, J. W. van der Laan, D. J. de Wildt & J. G. C. van Amsterdam National Institute of Public Health and the Environment Laboratory of Health Effects Research PO Box 1, NL 3720 BA Bilthoven, The Netherlands Summary Vaccination of young children with diphtheria, tetanus, poliomyelitis and pertussis (DTPoP) vaccine is effective in preventing outbreaks of whooping cough but adverse events sometimes occur. This pilot study shows that in freely-moving rats, multiple treatment with DTPoP (at day 0 and day 5, 6 ml/kg i.v.) increased heart rate (HR) for 5 days after the first treatment and decreased diastolic blood pressure (DBP)for at least 26 days after the first treatment and inhibited the circadian rhythm of HR and DBP for at least 10 days. DTPo vaccine, containing no pertussis vaccine, was free of such effects. Thus, in rats, the pertussis component of DTPoP acts on the cardiovascular system and disturbs its circadian rhythm. The contribution of these findings to clinical adverse effects is as yet unknown and needs further research. http://lan.sagepub.com/content/34/4/399.long Veterinary Pathology • March 2001 Feline vaccine-associated fibrosarcoma: an ultrastructural study of 20 tumors 1996-1999 Author information Madewell BR1, Griffey SM, McEntee MC, Leppert VJ, Munn RJ. Department of Surgical and Radiological Sciences, School of Veterinary Medicine University of California, Davis 95616 USA brmadewell@ucdavis.edu Abstract Twenty feline vaccine-associated sarcomas were examined by transmission electron microscopy. Tumors contained pleomorphic spindle cells, histiocytoid cells, and giant cells. Most tumors contained myofibroblasts, which had morphologic features similar to those of fibroblasts. These cells were further distinguished by subplasmalemmal dense plaques and thin cytoplasmic actin myofilaments organized as elongated bundles concentrated at irregular intervals forming characteristic dense bodies. Intracellular crystalline particulate material was found in 5 of the 20 tumors. Energy dispersive X-ray spectroscopy was used to identify the crystalline material within one tumor as aluminum-based. One tumor from a feline leukemia virus-infected cat contained budding and immature retroviral particles. In one of the first reports of feline vaccine-associated sarcomas, dense crystalline material was recognized by electron microscopy within macrophages surrounding tumor cells.9 Subsequent electron-probe microanalytical studies demonstrated aluminum in the cytoplasm of the macrophages within these sarcomas, suggesting the role of aluminum-containing adjuvant as irritant in the pathogenesis of vaccine-associated sarcomas.9 The role of vaccine adjuvant in the etiopathogenesis of these tumors remains unclear. The most prevalent adjuvants used in licensed veterinary vaccines are aluminum salts and oil emulsions; all of these formulations are considered to act as depots for injected vaccines.1 Aluminum hydroxide adjuvants are used in many human and veterinary vaccines, presumably because of their safety and low cost. Aluminum has been detected at the site of subcutaneous injections for up to 1 year in animals.3 That the tissues collected in this study represented tumors that developed months to years after vaccination when the precise site of vaccination was unknown and that most tumors were several centimeters in diameter or greater at the time of excision suggest that a large amount of aluminum, indeed, was contained within these adjuvanted vaccines to allow its detection in randomly selected ultrathin (60–90 nm thick) tissue sections examined in the electron microscope. The results of this study support previous morphologic observations of feline vaccine-associated sarcomas. The role of the myofibroblast in vaccine-associated sarcomas is unclear but perhaps reflects a continuum of the inflammatory response that characterizes, in part, these unique neoplasms. The role of adjuvant, similarly, in these tumors is unknown. Full Report: http://vet.sagepub.com/content/38/2/196.long “The results of this study support previous morphologic observations of feline vaccine-associated sarcomas. The role of the myofibroblast in vaccine-associated sarcomas is unclear but perhaps reflects a continuum of the inflammatory response that characterizes, in part, these unique neoplasms. The role of adjuvant, similarly, in these tumors is unknown.” Brain • May 2001 Central nervous system disease in patients with macrophagic myofasciitis Author information Authier FJ1, Cherin P, Creange A, Bonnotte B, Ferrer X, Abdelmoumni A, Ranoux D, Pelletier J, Figarella-Branger D, Granel B, Maisonobe T, Coquet M, Degos JD, Gherardi RK. Groupe d’Etudes et de Recherches sur le Muscle et le Nerf (GERMEN, EA Université Paris XII-Val de Marne) Faculté de Médecine de Créteil, Département de Pathologie Hôpital Henri Mondor, AP-HP, Créteil, France authier@univ-paris12.fr Abstract Macrophagic myofasciitis (MMF), a condition newly recognized in France, is manifested by diffuse myalgias and characterized by highly specific myopathological alterations which have recently been shown to represent an unusually persistent local reaction to intramuscular injections of aluminium-containing vaccines. Among 92 MMF patients recognized so far, eight of them, which included the seven patients reported here, had a symptomatic demyelinating CNS disorder. CNS manifestations included hemisensory or sensorimotor symptoms (four out of seven), bilateral pyramidal signs (six out of seven), cerebellar signs (four out of seven), visual loss (two out of seven), cognitive and behavioural disorders (one out of seven) and bladder dysfunction (one out of seven). Brain T(2)-weighted MRI showed single (two out of seven) or multiple (four out of seven) supratentorial white matter hyperintense signals and corpus callosum atrophy (one out of seven). Evoked potentials were abnormal in four out of six patients and CSF in four out of seven. According to Poser’s criteria for multiple sclerosis, the diagnosis was clinically definite (five out of seven) or clinically probable multiple sclerosis (two out of seven). Six out of seven patients had diffuse myalgias. Deltoid muscle biopsy showed stereotypical accumulations of PAS (periodic acid-Schiff)-positive macrophages, sparse CD8+ T cells and minimal myofibre damage. Aluminium-containing vaccines had been administered 3-78 months (median = 33 months) before muscle biopsy (hepatitis B virus: four out of seven, tetanus toxoid: one out of seven, both hepatitis B virus and tetanus toxoid: two out of seven). The association between MMF and multiple sclerosis-like disorders may give new insights into the controversial issues surrounding vaccinations and demyelinating CNS disorders. Deltoid muscle biopsy searching for myopathological alterations of MMF should be performed in multiple sclerosis patients with diffuse myalgias. Full Report http://brain.oxfordjournals.org/content/124/5/974 “Macrophagic myofasciitis (MMF), a condition newly recognized in France, is manifested by diffuse myalgias and characterized by highly specific myopathological alterations which have recently been shown to represent an unusually persistent local reaction to intramuscular injections of aluminium-containing vaccines. Among 92 MMF patients recognized so far, eight of them, which included the seven patients reported here, had a symptomatic demyelinating Central Nervous System disorder.” Current Atherosclerosis Reports • July 2001 Antiphospholipid syndrome, antiphospholipid antibodies, and atherosclerosis Author information Sherer Y1, Shoenfeld Y. Department of Medicine ‘B’ Sheba Medical Center Tel-Hashomer 52621, Israel Abstract The antiphospholipid syndrome is characterized by arterial and venous thrombosis, as well as pregnancy morbidity, in the presence of elevated levels of antiphospholipid antibodies. These autoantibodies have procoagulant activity, as they affect platelets, humoral coagulation factors, and endothelial cells. In addition, they are proatherogenic, as demonstrated by animal models and by the increased prevalence of cardiovascular diseases in patients with systemic lupus erythematosus and antiphospholipid syndrome. Moreover, antiphospholipid antibodies, including anticardiolipin, anti-b2-glycoprotein-I, and anti-oxidized low-density lipoprotein, are associated with atherosclerosis and its consequences in the general population as well. This autoimmune aspect of atherosclerosis in the presence or absence of an autoimmune disease suggests benefit from development of immunomodulating therapies. http://www.ncbi.nlm.nih.gov/pubmed/?term=11389799 “The antiphospholipid syndrome is characterized by arterial and venous thrombosis, as well as pregnancy morbidity, in the presence of elevated levels of antiphospholipid antibodies.” “Vaccine-related cardiorespiratory events are relatively common in preterm babies.” Acta Paediatrica • August 2001 Adverse events following vaccination in premature infants S Sen1, Y Cloete2, K Hassan1 andP Buss1, Department of Paediatrics and Neonatology, Royal Gwent Hospital, Newport, UK Nevill Hall Hospital, Abergavenny, UK Royal Gwent Hospital, Cardiff Road, Newport NP9 2UB, UK Abstract The aims of this study were to study the frequency, severity and types of adverse reactions following DPT/Hib (diphtheria and tetanus toxoids and pertussisHaemophilus influenzae type B conjugate) immunization in very preterm infants and to identify possible risk factors. Case notes of 45 preterm babies vaccinated in the neonatal intensive care unit between January 1993 and December 1998 were studied retrospectively. Birthweight, gestational age, duration of ventilation, oxygen dependency, timing of vaccination, weight, corrected gestation at vaccination and apparent adverse effects were noted. Apparent adverse events were noted in 17 of 45 (37.8%) babies: 9 (20%) had major events, i.e. apnoea, bradycardia or desaturations, and 8 (17.8%) had minor events, i.e. increased oxygen requirements, temperature instability, poor handling and feed intolerance. Babies with major events were significantly younger (p<0.05), had a lower postmenstrual age (p < 0.05) and weighed less (p< 0.05) at the time of vaccination compared with babies without major events. No differences in the mean birthweight, gestational age, duration of ventilation or oxygen dependency were found between the two groups. Age at vaccination of 70 days or less was significantly associated with increased risk (p < 0.01). Of 27 babies vaccinated at 70 days or less, 9 (33.3%) developed major events compared with none when vaccinated over 70d. Conclusion Vaccine-related cardiorespiratory events are relatively common in preterm babies. Problems were much more common if vaccine is administered at or before 70 d. These babies should therefore be monitored postvaccination. Further prospective studies are needed to clarify whether delaying vaccination offers protection against these adverse events. http://onlinelibrary.wiley.com/doi/10.1111/j.1651-2227.2001.tb02457.x/abstract Archives Of Virology • August 2001 Comparative analysis of host responses related to immunosuppression between measles patients and vaccine recipients with live attenuated measles vaccines Author information Okada H1, Sato TA, Katayama A, Higuchi K, Shichijo K, Tsuchiya T, Takayama N, Takeuchi Y, Abe T, Okabe N, Tashiro M. Department of Viral Diseases and Vaccine Control National Institute of Infectious Diseases Musashi-Murayama, Tokyo, Japan Abstract Measles virus infection induces a profound immunosuppression. We analyzed in a timedependent manner peripheral bloods of one to two-year-old children immunized with live attenuated measles vaccines, compared with age-matched measles patients, for immunosuppression. In contrast to transient severe lymphopenia with measles patients, primarily due to extensive apoptosis of a broad spectrum of uninfected lymphocytes, neither apoptosis nor lymphopenia occurred with measles vaccine recipients. Increase in number and activation of NK cells, which might compensate for the lymphopenia in measles patients, were not found with the vaccinees. While cell surface expression of apoptosis-related molecules such as TNF-related apoptosis-inducing ligand (TRAIL), TRAIL-receptors, CD95(Fas) and Fas-ligand, and plasma interferon-gamma were increased for measles patients, they remained unchanged after vaccination. Plasma interleukin (IL)-18, which is responsible for inducing apoptosis in several infectious diseases, was increased predominantly with measles patients, whereas the increase remained marginal with the vaccinees. IL-10 was elevated transiently in both measles patients and vaccinees. Decrease in plasma IL-12, which is often correlated with T cell suppression, was not found for both cases. Serum IgM and IgG antibodies to measles virus were induced at lower titers in the vaccinees than measles patients. These results indicate that in contrast to wild-type measles virus, live measles vaccines hardly provoked host cytokine responses that lead to apoptotic cytolysis of uninfected lymphocytes, lymphopenia and immunosuppression, and thereby induced weaker immune responses to the virus. http://www.ncbi.nlm.nih.gov/pubmed/?term=11448026 “These results indicate that in contrast to wild-type measles virus, live measles vaccines hardly provoked host cytokine responses that lead to apoptotic cytolysis of uninfected lymphocytes, lymphopenia and immunosuppression, and thereby induced weaker immune responses to the virus.” Acta Paediatrica • August 2001 Adverse events following vaccination in premature infants Author information Sen S1, Cloete Y, Hassan K, Buss P. Department of Paediatrics and Neonatology Royal Gwent Hospital, Newport, UK Abstract The aims of this study were to study the frequency, severity and types of adverse reactions following DPT/Hib (diphtheria and tetanus toxoids and pertussis/Haemophilus influenzae type B conjugate) immunization in very preterm infants and to identify possible risk factors. Case notes of 45 preterm babies vaccinated in the neonatal intensive care unit between January 1993 and December 1998 were studied retrospectively. Birthweight, gestational age, duration of ventilation, oxygen dependency, timing of vaccination, weight, corrected gestation at vaccination and apparent adverse effects were noted. Apparent adverse events were noted in 17 of 45 (37.8%) babies: 9 (20%) had major events, i.e. apnoea, bradycardia or desaturations, and 8 (17.8%) had minor events, i.e. increased oxygen requirements, temperature instability, poor handling and feed intolerance. Babies with major events were significantly younger (p < 0.05), had a lower postmenstrual age (p < 0.05) and weighed less (p < 0.05) at the time of vaccination compared with babies without major events. No differences in the mean birthweight, gestational age, duration of ventilation or oxygen dependency were found between the two groups. Age at vaccination of 70 days or less was significantly associated with increased risk (p < 0.01). Of 27 babies vaccinated at 70 days or less, 9 (33.3%) developed major events compared with none when vaccinated over 70 days. CONCLUSION: Vaccine-related cardiorespiratory events are relatively common in preterm babies. Problems were much more common if vaccine is administered at or before 70 d. These babies should therefore be monitored postvaccination. Further prospective studies are needed to clarify whether delaying vaccination offers protection against these adverse events. http://www.ncbi.nlm.nih.gov/pubmed/?term=11529542 “Vaccine-related cardiorespiratory events are relatively common in preterm babies. Problems were much more common if vaccine is administered at or before 70 days.” Clinical Immunology • September 2001 Infection of human B lymphocytes with MMR vaccine induces IgE class switching Author information “Circulating immunoglobulin E (IgE) is one of the characteristics of human allergic diseases including allergic asthma. We recently showed that infection of Imani F1, Kehoe KE. human B cells with rhinovirus or measles virus could Division of Clinical Immunology, Department of Medicine The Johns Hopkins University School of Medicine Asthma and Allergy Center, 5501 Hopkins Bayview Circle Baltimore, Maryland 21224, USA fimani@mail.jhmi.edu lead to the initial steps of IgE class switching. Our data Abstract Circulating immunoglobulin E (IgE) is one of the characteristics of human allergic diseases including allergic asthma. We recently showed that infection of human B cells with rhinovirus or measles virus could lead to the initial steps of IgE class switching. Since many viral vaccines are live viruses, we speculated that live virus vaccines may also induce IgE class switching in human B cells. To examine this possibility, we selected the commonly used live attenuated measles mumps rubella (MMR) vaccine. Here, we show that infection of a human IgM(+) B cell line with MMR resulted in the expression of germline epsilon transcript. In addition, infection of freshly prepared human PBLs with this vaccine resulted in the expression of mature IgE mRNA transcript. Our data suggest that a potential side effect of vaccination with live attenuated viruses may be an increase in the expression of IgE. http://www.ncbi.nlm.nih.gov/pubmed/11513549 suggest that a potential side effect of vaccination with live attenuated viruses may be an increase in the expression of IgE.” [Based on these findings, the authors concluded that viral vaccines might be playing a role in the increasing incidence of asthma and other allergic diseases] “From October 1998 to December 1999, 112 cases of intussusception were reported.” Vaccine • September 2001 Data mining in the US Vaccine Adverse Event Reporting System (VAERS): early detection of intussusception and other events after rotavirus vaccination Author Information Manette T. Niu.a, Diane E. Erwin.c, M.Miles Braun.b a. Vaccine Safety Branch, Division of Epidemiology, Office of Biostatistics and Epidemiology, Center for Biologic Evaluation and Research, US Food and Drug Administration, 1401 Rockville Pike, HFM-210, Rockville, MD b. Division of Epidemiology, Office of Biostatistics and Epidemiology Center for Biologic Evaluation and Research, US Food and Drug Administration, Rockville, MD c. Information Management Services, Inc., Rockville, MD, USA Abstract The Vaccine Adverse Event Reporting System (VAERS) is the US passive surveillance system monitoring vaccine safety. A major limitation of VAERS is the lack of denominator data (number of doses of administered vaccine), an element necessary for calculating reporting rates. Empirical Bayesian data mining, a data analysis method, utilizes the number of events reported for each vaccine and statistically screens the database for higher than expected vaccine-event combinations signaling a potential vaccine-associated event. This is the first study of data mining in VAERS designed to test the utility of this method to detect retrospectively a known side effect of vaccination–intussusception following rotavirus (RV) vaccine. From October 1998 to December 1999, 112 cases of intussusception were reported. The data mining method was able to detect a signal for RV-intussusception in February 1999 when only four cases were reported. These results demonstrate the utility of data mining to detect significant vaccine-associated events at early date. Data mining appears to be an efficient and effective computer-based program that may enhance early detection of adverse events in passive surveillance systems. http://www.sciencedirect.com/science/article/pii/S0264410X01002377 Emerging Infectious Diseases • September 2001 Adaptation of Bordetella pertussis to vaccination: a cause for its reemergence? Author information Mooi FR1, van Loo IH, King AJ. National Institute for Public Health and the Environment Bilthoven, the Netherlands fr.mooi@rivm.nl Abstract In the Netherlands, as in many other western countries, pertussis vaccines have been used extensively for more than 40 years. Therefore, it is conceivable that vaccine-induced immunity has affected the evolution of Bordetella pertussis. Consistent with this notion, pertussis has reemerged in the Netherlands, despite high vaccination coverage. Further, a notable change in the population structure of B. pertussis was observed in the Netherlands subsequent to the introduction of vaccination in the 1950s. Finally, we observed antigenic divergence between clinical isolates and vaccine strains, in particular with respect to the surface-associated proteins pertactin and pertussis toxin. Adaptation may have allowed B. pertussis to remain endemic despite widespread vaccination and may have contributed to the reemergence of pertussis in the Netherlands. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2631860/ “Adaptation may have allowed B. pertussis to remain endemic despite widespread vaccination and may have contributed to the reemergence of pertussis in the Netherlands.” European Journal Of Immunology • October 2001 Immunization with the adjuvant MF59 induces macrophage trafficking and apoptosis Author information Dupuis M1, Denis-Mize K, LaBarbara A, Peters W, Charo IF, McDonald DM, Ott G. Cardiovascular Research Institute and Department of Anatomy University of California, San Francisco, USA Abstract The mechanisms associated with the immunostimulatory activity of vaccine adjuvants are still poorly understood. We have undertaken a study to determine whether antigen-presenting cell trafficking is modified by administration of the submicron emulsion adjuvant MF59. We investigated the fate of inflammatory macrophages after intramuscular injection of the antigen herpes simplex virus gD2 with fluorescencelabeled MF59. A homogeneous population of macrophages infiltrated the muscle, internalized adjuvant and expressed markers characteristic of mature macrophages over a 48-h period. Macrophage influx to the injection site was reduced by 70% in mice deficient for the chemokine receptor 2 (CCR2). Two distinct cell populations were shown to contain fluorescence-labeled MF59 in the draining lymph node at 48 h post injection. The first population had a round morphology, exhibited bright fluorescence, was located in the subcapsular sinus, and was apoptotic. The second population had a dendritic morphology, was weakly fluorescent, and was located in the T cell area where adjuvantcontaining apoptotic bodies identified by TUNEL labeling were present. We propose that lymph node-resident dendritic cells can acquire antigen and MF59 after intramuscular immunization by uptake of the apoptotic macrophages. http://www.ncbi.nlm.nih.gov/pubmed/11592066 “We propose that lymph node-resident dendritic cells can acquire antigen and MF59 [squalene] after intramuscular immunization by uptake of the apoptotic macrophages.” “There are significantly elevated risks of febrile seizures after receipt of DTP vaccine or MMR vaccine ...” CDC New England Journal Of Medicine • 2001 The Risk of Seizures after Receipt of Whole-Cell Pertussis or Measles, Mumps, and Rubella Vaccine William E. Barlow, Ph.D., Robert L. Davis, M.D., M.P.H., John W. Glasser, Ph.D., M.P.H., Phillip H. Rhodes, Ph.D., Robert S. Thompson, M.D., John P. Mullooly, Ph.D., Steven B. Black, M.D., Henry R. Shinefield, M.D., Joel I. Ward, M.D., S. Michael Marcy, M.D., Frank DeStefano, M.D., Virginia Immanuel, M.P.H., John A. Pearson, M.D., Constance M. Vadheim, Ph.D., Viviana Rebolledo, B.S., Dimitri Christakis, M.D., M.P.H., Patti J. Benson, M.P.H., Ned Lewis, M.P.H., and Robert T. Chen, M.D. for the Centers for Disease Control and Prevention Vaccine Safety Datalink Working Group BACKGROUND The administration of the diphtheria and tetanus toxoids and whole-cell pertussis (DTP) vaccine and measles, mumps, and rubella (MMR) vaccine has been associated with seizures. We studied the relation between these vaccinations and the risk of a first seizure, subsequent seizures, and neurodevelopmental disability in children. METHODS This cohort study was conducted at four large health maintenance organizations and included reviews of the medical records of children with seizures. We calculated the relative risks of febrile and nonfebrile seizures among 679,942 children after 340,386 vaccinations with DTP vaccine, 137,457 vaccinations with MMR vaccine, or no recent vaccination. Children who had febrile seizures after vaccination were followed to identify the risk of subsequent seizures and other neurologic disabilities. RESULTS Receipt of DTP vaccine was associated with an increased risk of febrile seizures only on the day of vaccination (adjusted relative risk, 5.70; 95 percent confidence interval, 1.98 to 16.42). Receipt of MMR vaccine was associated with an increased risk of febrile seizures 8 to 14 days after vaccination (relative risk, 2.83; 95 percent confidence interval, 1.44 to 5.55). Neither vaccination was associated with an increased risk of nonfebrile seizures. The number of febrile seizures attributable to the administration of DTP and MMR vaccines was estimated to be 6 to 9 and 25 to 34 per 100,000 children, respectively. As compared with other children with febrile seizures that were not associated with vaccination, the children who had febrile seizures after vaccination were not found to be at higher risk for subsequent seizures or neurodevelopmental disabilities. CONCLUSIONS There are significantly elevated risks of febrile seizures after receipt of DTP vaccine or MMR vaccine, but these risks do not appear to be associated with any long-term, adverse consequences. http://www.nejm.org/doi/full/10.1056/NEJMoa003077 Toxicology In Vitro • February 2002 Formaldehyde cytotoxicity in three human cell types assessed in three different assays Author information Lovschall H1, Eiskjaer M, Arenholt-Bindslev D. Tissue Culture Laboratory Department of Dental Pathology Royal Dental College, Faculty of Health Sciences University of Aarhus, DK-8000 Aarhus C, Denmark loev@odont.au.dk Abstract International standards for preclinical screening of the cytotoxicity of dental materials so far recommend the use of established cell lines. The aim of this study was to assess the relative susceptibility of human dental pulp fibroblasts (HPF), human buccal epithelial cells (HBE) and HeLa cervix cancer cells exposed to identical cytotoxic challenges. Formaldehyde, which may be released from dental materials such as dental composites, glassionomer cements, and endodontic sealers, was used as test chemical. Cytotoxicity data including dose-response relations and TC(50) values were assessed in three different assays: BrdU incorporation, neutral red uptake and MTT assays. HBE and HPF demonstrated statistically significant lower TC(50) values in both the neutral red and the BrdU assay in comparison to HeLa cells. In the MTT assay no statistically significant differences were observed between the cell types. In the two target-tissue cell types (HPF and HBE) the Neutral Red assay revealed lower TC(50) values in comparison to the BrdU assay. In HeLa cells no statistically significant differences were observed between the assays. In conclusion, the present study confirms that cytotoxicity data obtained by cell culture studies are influenced by both cell culture model and choice of assay. Under identical experimental conditions, human target tissue cells appeared to be more sensitive to formaldehyde toxicity than human HeLa cancer cells. http://www.ncbi.nlm.nih.gov/pubmed/?term=11812641 “Under identical experimental conditions, human target tissue cells appeared to be more sensitive to formaldehyde toxicity than human HeLa cancer cells.” “antivaccination activists use: highly emotive content, conspiratorial claims and privately published material and newspapers articles ...” [the reason for the publication of this eBook] Archives Of Disease In Childhood • March 2002 Antivaccination activists on the world wide web Author Information P Davies1, S Chapman1, J Leask2 1. Department of Public Health and Community Medicine, University of Sydney A27, NSW 2006, Australia 2. National Centre for Immunisation Research and Surveillance Simonc@health.usyd.edu.au Abstract Aims To determine the likelihood of finding an antivaccination site on the world wide web and to characterise their explicit claims and rhetorical appeals. Methods Using “vaccination” and “immunisation”, examining the first 10 sites displayed on seven leading search engines. Detailed examination of content of 100 antivaccination sites found on Google. Results 43% of websites were antivaccination (all of the first 10 on Google). Main rhetorical appeals involve themes of the scientific veracity of antivaccination argument; rapport with parents seeking to protect their children from harm; and alleged collusion between doctors, the pharmaceutical industry, and government to deny vaccine harm. Conclusions There is a high probability that parents will encounter elaborate antivaccination material on the world wide web. Factual refutational strategies alone are unlikely to counter the highly rhetorical appeals that shape these sites.Campaigns by those opposed to immunisation have been followed by falling immunisation rates and outbreaks of vaccine preventable disease.1 The internet has provided antivaccinationists with unprecedented opportunities for exposure. In the USA, 55% of adults with internet access use it to seek health related information.2 For all its benefits, the internet has great potential to disseminate health information that is incorrect and potentially dangerous.3 To date, all studies on health information on the internet have assessed content against a priori standards of evidence, and have not considered the rhetorical subtexts and wider social discourses in which this information is embedded.4,5 We examined the content of 100 antivaccination websites, considering not only the explicit claims made about vaccination, but also the ways these claims are framed to maximise their appeal and influence. Response to the problem To defuse conspiratorial claims the public should be made aware of efforts to address the issue of vaccine safety through more active surveillance of adverse events and studies investigating hypothesised links between vaccination and serious chronic diseases.9,10 Since antivaccination websites share many of the characteristics we have described, the themes identified in this article might act as a tool for parents to discern whether the source is trustworthy. The checklist might include: • Highly emotive content • Conspiratorial claims • Privately published material, newspapers articles, etc., given as sources of information • Claims to have privileged information unknown to medical authorities Where refuting antivaccination arguments on the basis of fact alone is insufficient, it may be possible to use similarly emotive tactics to promote immunisation. Emphasis could be given to images and stories of children harmed by vaccine preventable illnesses (see, for example, http://www.immunize.org/stories/unprot.htm). Full Report: http://adc.bmj.com/content/87/1/22.full “Several recent epidemiological studies have shown that vaccinations against biological warfare using pertussis as an adjuvant were associated with the Gulf war syndrome.” Medical Hypotheses • April 2002 Gulf war syndrome: could it be triggered by biological warfare-vaccines using pertussis as an adjuvant? Author information Tournier JN1, Jouan A, Mathieu J, Drouet E. Département de biologie des agents transmissibles CRSSA, La Tronche, France j.tournier@eudoramail.com Abstract Several recent epidemiological studies have shown that vaccinations against biological warfare using pertussis as an adjuvant were associated with the Gulf war syndrome. If such epidemiological findings are confirmed, we propose that the use of pertussis as an adjuvant could trigger neurodegeneration through induction of interleukin1beta secretion in the brain. In turn, neuronal lesions may be sustained by stress or neurotoxic chemical combinations. Particular susceptibility for IL-1beta secretion and potential distant neuronal damage could provide an explanation for the diversity of the symptoms observed on veterans. http://www.ncbi.nlm.nih.gov/pubmed/12027522 The Journal of Infection • May 2002 The effect of vaccination on the epidemiology of varicella zoster virus Author information Edmunds WJ1, Brisson M. Immunisation Division Colindale, London NW9 5EQ, UK jedmunds@phls.org.uk Abstract Varicella zoster virus (VZV) causes chickenpox (varicella) on primary exposure and can reactivate later in life to cause shingles (zoster). As primary infection is more serious in adults than children, and exposure to the virus might boost the immune response to both chickenpox and shingles, there are two main concerns regarding infant VZV vaccination: that it could lead to an increase in adult disease; and/or that it could lead to a temporary increase in the incidence of shingles. This paper reviews the evidence for such outcomes. The consensus view of mathematical modelling studies is that the overall varicella associated burden is likely to decrease in the long term, regardless of the level of vaccine coverage. On the other hand, recent evidence suggests that an increase in zoster incidence appears likely, and the more effective vaccination is at preventing varicella, the larger the increase in zoster incidence. Targeted vaccination of susceptible adolescents and/or the contacts of high-risk individuals can be effective at preventing disease in these individuals with minimal risk to the community. However, targeted strategies would not prevent most disease (including most severe disease), and will not lead to a long-term reduction in the incidence of zoster. Understanding the mechanisms for maintaining immunity against varicella and zoster is critical for predicting the long-term effects of vaccination. Meanwhile sensitive surveillance of both chickenpox and shingles is essential in countries that have implemented, or are about to implement, varicella vaccination. http://www.ncbi.nlm.nih.gov/pubmed/12099726 “... recent evidence suggests that an increase in zoster [shingles] incidence appears likely, and the more effective vaccination is at preventing varicella, the larger the increase in zoster incidence.” [varicella is chicken pox] Current Opinions In Neurology • June 2002 Neurological adverse events associated with vaccination Author information “These complications include autism (measles vaccine), multiple sclerosis (hepatitis B vaccine), meningoencephalitis (Japanese encephalitis vaccine), Piyasirisilp S1, Hemachudha T. Division of Neurology, Department of Medicine Chiang Mai University, Chiang Mai 50200, Thailand spiyasir@mail.med.cmu.ac.th Abstract Public tolerance to adverse reactions is minimal. Several reporting systems have been established to monitor adverse events following immunization. The present review summarizes data on neurologic complications following vaccination, and provides evidence that indicates whether they were directly associated with the vaccines. These complications include autism (measles vaccine), multiple sclerosis (hepatitis B vaccine), meningoencephalitis (Japanese encephalitis vaccine), Guillain-Barré syndrome and giant cell arteritis (influenza vaccine), and reactions after exposure to animal rabies vaccine. Seizures and hypotonic/hyporesponsive episodes following pertussis vaccination and potential risks associated with varicella vaccination, as well as vaccine-associated paralytic poliomyelitis following oral poliovirus vaccination, are also described. In addition, claims that complications are caused by adjuvants, preservatives and contaminants [i.e. macrophagic myofasciitis (aluminium), neurotoxicity (thimerosal), and new variant Creutzfeldt-Jakob disease (bovine-derived materials)] are discussed. http://www.ncbi.nlm.nih.gov/pubmed/?term=12045734 Guillain-Barré syndrome and giant cell arteritis (influenza vaccine), and reactions after exposure to animal rabies vaccine. Seizures and hypotonic/hyporesponsive episodes following pertussis vaccination and potential risks associated with varicella vaccination, as well as vaccine-associated paralytic poliomyelitis following oral poliovirus vaccination, are also described.” “The present review summarizes data on neurologic complications following vaccination ...” Current Opinion in Neurology • June 2002 Neurological adverse events associated with vaccination Piyasirisilp, Sucheepa; Hemachudha, Thiravatb Abstract Public tolerance to adverse reactions is minimal. Several reporting systems have been established to monitor adverse events following immunization. The present review summarizes data on neurologic complications following vaccination, and provides evidence that indicates whether they were directly associated with the vaccines. These complications include autism (measles vaccine), multiple sclerosis (hepatitis B vaccine), meningoencephalitis (Japanese encephalitis vaccine), Guillain-Barré syndrome and giant cell arteritis (influenza vaccine), and reactions after exposure to animal rabies vaccine. Seizures and hypotonic/hyporesponsive episodes following pertussis vaccination and potential risks associated with varicella vaccination, as well as vaccine-associated paralytic poliomyelitis following oral poliovirus vaccination, are also described. In addition, claims that complications are caused by adjuvants, preservatives and contaminants [i.e. macrophagic myofasciitis (aluminium), neurotoxicity (thimerosal), and new variant Creutzfeldt-Jakob disease (bovine-derived materials)] are discussed. http://www.ncbi.nlm.nih.gov/pubmed/12045734 Journal Of Biomedical Science • July 2002 Abnormal measles-mumps-rubella antibodies and CNS autoimmunity in children with autism Author information Singh VK1, Lin SX, Newell E, Nelson C. Department of Biology and Biotechnology Center Utah State University, Logan, Utah 84322, USA singhvk@cc.usu.edu Abstract Autoimmunity to the central nervous system (CNS), especially to myelin basic protein (MBP), may play a causal role in autism, a neurodevelopmental disorder. Because many autistic children harbor elevated levels of measles antibodies, we conducted a serological study of measles-mumpsrubella (MMR) and MBP autoantibodies. Using serum samples of 125 autistic children and 92 control children, antibodies were assayed by ELISA or immunoblotting methods. ELISA analysis showed a significant increase in the level of MMR antibodies in autistic children. Immunoblotting analysis revealed the presence of an unusual MMR antibody in 75 of 125 (60%) autistic sera but not in control sera. This antibody specifically detected a protein of 73-75 kD of MMR. This protein band, as analyzed with monoclonal antibodies, was immunopositive for measles hemagglutinin (HA) protein but not for measles nucleoprotein and rubella or mumps viral proteins. Thus the MMR antibody in autistic sera detected measles HA protein, which is unique to the measles subunit of the vaccine. Furthermore, over 90% of MMR antibody-positive autistic sera were also positive for MBP autoantibodies, suggesting a strong association between MMR and CNS autoimmunity in autism. Stemming from this evidence, we suggest that an inappropriate antibody response to MMR, specifically the measles component thereof, might be related to pathogenesis of autism. http://www.ncbi.nlm.nih.gov/pubmed/12145534 “... over 90% of MMR antibody-positive autistic sera were also positive for MBP autoantibodies, suggesting a strong association between MMR and CNS autoimmunity in autism. Stemming from this evidence, we suggest that an inappropriate antibody response to MMR, specifically the measles component thereof, might be related to pathogenesis of autism.” “The results indicated that whole-cell DTP vaccine contained high levels of endotoxin and was statistically significantly more reactogenic than acellular DTaP vaccine.” Pediatric Rehabilitation • July 2002 Serious neurological conditions following pertussis immunization: an analysis of endotoxin levels, the vaccine adverse events reporting system (VAERS) database and literature review Author information Geier DA1, Geier MR. MedCon, Inc., Silver Spring, MD, USA Abstract The purpose of this study was to determine the potential risks for the development and outcome of serious neurological illnesses following whole-cell DTP vaccination and also to determine if the switch to using acellular DTaP vaccine in the US has had any effect on the incidence rate of serious neurological illnesses following vaccination. This study used the Limulus amebocyte lysate (LAL) endotoxin assay to determine the levels of endotoxin in various commercially available whole-cell and acellular DTaP vaccines, analysed the Vaccine Adverse Events Reporting System (VAERS) database to determine the clinical effects of the use of whole-cell DTP and acellular DTaP vaccines in the US and reviewed recently published pertinent studies that analysed the incidence rates of serious neurological illness following whole-cell DTP and acellular DTaP vaccines. The results indicated that whole-cell DTP vaccine contained high levels of endotoxin and was statistically significantly more reactogenic than acellular DTaP vaccine. The presence of bias in the VAERS database was not borne-out. The recommendation by the American Academy of Paediatrics to use acellular DTaP vaccine for the entire childhood vaccination schedule beginning in 1996 and the absence of the availability of whole-cell DTP in the US beginning in 2001 seems well justified based upon the results of this study. http://www.ncbi.nlm.nih.gov/pubmed/12587565 Experimental And Molecular Pathology • August 2002 Antibodies to squalene in recipients of anthrax vaccine Author information Asa PB1, Wilson RB, Garry RF. Department of Microbiology Tulane University Medical School New Orleans, Louisiana 70112, USA Abstract We previously reported that antibodies to squalene, an experimental vaccine adjuvant, are present in persons with symptoms consistent with Gulf War Syndrome (GWS) (P. B. Asa et al., Exp. Mol. Pathol 68, 196-197, 2000). The United States Department of Defense initiated the Anthrax Vaccine Immunization Program (AVIP) in 1997 to immunize 2.4 million military personnel. Because adverse reactions in vaccinated personnel were similar to symptoms of GWS, we tested AVIP participants for antisqualene antibodies (ASA). In a pilot study, 6 of 6 vaccine recipients with GWS-like symptoms were positive for ASA. In a larger blinded study, only 32% (8/25) of AVIP personnel compared to 15.7% (3/19) of controls were positive (P > 0.05). Further analysis revealed that ASA were associated with specific lots of vaccine. The incidence of ASA in personnel in the blinded study receiving these lots was 47% (8/17) compared to an incidence of 0% (0/8; P < 0.025) of the AVIP participants receiving other lots of vaccine. Analysis of additional personnel revealed that in all but one case (19/20; 95%), ASA were restricted to personnel immunized with lots of vaccine known to contain squalene. Except for one symptomatic individual, positive clinical findings in 17 ASA-negative personnel were restricted to 4 individuals receiving vaccine from lots containing squalene. ASA were not present prior to vaccination in preimmunization sera available from 4 AVIP personnel. Three of these individuals became ASA positive after vaccination. These results suggest that the production of ASA in GWS patients is linked to the presence of squalene in certain lots of anthrax vaccine. http://www.ncbi.nlm.nih.gov/pubmed/12127050 “Three of these individuals became anti-squalene antibody positive after vaccination. These results suggest that the production of anti-squalene antibody in Gulf War Syndrome patients is linked to the presence of squalene in certain lots of anthrax vaccine.” Laboratory Medicine • September 2002 Vaccines and Autism “Vaccinations may be one of the triggers for autism. by Bernard Rimland, PhD, Woody McGinnis, MD Substantial data demonstrate immune abnormality Autism Research Institute, San Diego, CA in many autistic children consistent with impaired Abstract Autism research is characterized by diverse findings. There is no consensus about the biological determinants of autism. This paper examines the autistic immune profile and the possible role of vaccines in autism. Vaccinations may be one of the triggers for autism. Substantial data demonstrate immune abnormality in many autistic children consistent with impaired resistance to infection, activation of inflammatory response, and autoimmunity. Impaired resistance may predispose to vaccine injury in autism. A mercurial preservative in childhood vaccines, thimerosal, may cause direct neurotoxic, immunodepressive, and autoimmune injury and contribute to early-onset and regressed autism. Live viruses in measles, mumps, and rubella (MMR) may result in chronic infection of the gut and trigger regressed autism. Thimerosal injection may potentiate MMR injury. Consideration of vaccine etiology must include recognition of compromised gut and nutrition in most autistic children. An integrated view of the underlying biological problems in autistic children serves our understanding of the possible role of vaccines. Development of screening methods for deferral of vaccines in at-risk children is a worthy goal. http://labmed.oxfordjournals.org/content/labmed/33/9/708.full.pdf resistance to infection, activation of inflammatory response, and autoimmunity. Impaired resistance may predispose to vaccine injury in autism. A mercurial preservative in childhood vaccines, thimerosal, may cause direct neurotoxic, immunodepressive, and autoimmune injury and contribute to early-onset and regressed autism. Live viruses in measles, mumps, and rubella (MMR) may result in chronic infection of the gut and trigger regressed autism. Thimerosal injection may potentiate MMR injury.” Journal Of Pharmaceutical Sciences • October 2002 Peroxide formation in polysorbate 80 and protein stability Author information Ha E1, Wang W, Wang YJ. Analytics & Formulation Department Process Sciences, Bayer Biotechnology 800 Dwight Way, Berkeley, California 94701, USA Abstract Nonionic surfactants are widely used in the development of protein pharmaceuticals. However, the low level of residual peroxides in surfactants can potentially affect the stability of oxidation-sensitive proteins. In this report, we examined the peroxide formation in polysorbate 80 under a variety of storage conditions and tested the potential of peroxides in polysorbate 80 to oxidize a model protein, IL-2 mutein. For the first time, we demonstrated that peroxides can be easily generated in neat polysorbate 80 in the presence of air during incubation at elevated temperatures. Polysorbate 80 in aqueous solution exhibited a faster rate of peroxide formation and a greater amount of peroxides during incubation, which is further promoted/catalyzed by light. Peroxide formation can be greatly inhibited by preventing any contact with air/oxygen during storage. IL-2 mutein can be easily oxidized both in liquid and solid states. A lower level of peroxides in polysorbate 80 did not change the rate of IL-2 mutein oxidation in liquid state but significantly accelerated its oxidation in solid state under air. A higher level of peroxides in polysorbate 80 caused a significant increase in IL-2 mutein oxidation both in liquid and solid states, and glutathione can significantly inhibit the peroxide-induced oxidation of IL-2 mutein in a lyophilized formulation. In addition, a higher level of peroxides in polysorbate 80 caused immediate IL-2 mutein oxidation during annealing in lyophilization, suggesting that implementation of an annealing step needs to be carefully evaluated in the development of a lyophilization process for oxidation-sensitive proteins in the presence of polysorbate. http://www.ncbi.nlm.nih.gov/pubmed/?term=12226852 “For the first time, we demonstrated that peroxides can be easily generated in neat polysorbate 80 ...” Vaccine • November 2002 Routine vaccinations and child survival in a war situation with high mortality: effect of gender Author information Aaby P1, Jensen H, Garly ML, Balé C, Martins C, Lisse I. Bandim Health Project, Apartado 861Bissau Guinea-Bissau and Danish Epidemiology Science Centre Artillerivej 5, 2300 Copenhagen S, Denmark psb@sol.gtelecom.gw Abstract Non-specific effects of vaccination may be different for boys and girls. Due to the sequential administration of vaccines, it is difficult to separate the effect of different vaccines. We tested sex-specific effects of diphtheria, tetanus, pertussis (DTP) and polio vaccines and measles vaccines during the recent war (1998) in Guinea-Bissau when there was no functioning immunisation programme in the country. The study included 1491 children aged 1-17 months in four urban districts in Bissau. Vaccination status had been assessed in the study area in the 3 months before the war. The effect of DTP and polio vaccines was assessed for children who had not received measles vaccine. The effect of measles vaccine was evaluated for children aged 6-17 months. Compared with measles-unvaccinated children, measles-vaccinated children had lower mortality (mortality ratio (MR)=0.44 (95% CI 0.20-1.00)), the difference being marked for girls (0.25 (0.09-0.71)) but not for boys (0.84 (0.26-2.75)) (test of homogeneity, P=0.095). If measles cases were censored in the analysis, the mortality ratio for vaccinated and unvaccinated children was 0.38 (0.16-0.89). DTP and polio-vaccinated children did not have lower mortality than unvaccinated children. The female-male mortality ratio for DTP and polio-vaccinated children was 3.08 (1.11-8.56) and 0.63 (0.28-1.40) for measles-vaccinated children, a significant inversion of the ratios (test of homogeneity, P=0.013). The divergent female-male mortality ratios are unlikely to be explained by a selection bias going in different directions for different vaccines. The reduction associated with measles vaccination was unrelated to prevention against measles infection. Non-specific effects of vaccination should be assessed separately for boys and girls. Taking these effects into consideration may have implications for child mortality patterns in developing countries. http://www.ncbi.nlm.nih.gov/pubmed/12443658 “The divergent female-male mortality ratios are unlikely to be explained by a selection bias going in different directions for different vaccines. Non-specific effects of vaccination should be assessed separately for boys and girls.” Diabetes • December 2002 The rise of childhood type 1 diabetes in the 20th century Author information Gale EA Department of Diabetes and Metabolism Division of Medicine, University of Bristol Medical School Unit, Southmead Hospital Bristol BS10 5NB, U.K. Abstract The incidence of childhood type 1 diabetes increased worldwide in the closing decades of the 20th century, but the origins of this increase are poorly documented. A search through the early literature revealed a number of useful but neglected sources, particularly in Scandinavia. While these do not meet the exacting standards of more recent surveys, tentative conclusions can be drawn concerning long-term changes in the demography of the disease. Childhood type 1 diabetes was rare but well recognized before the introduction of insulin. Low incidence and prevalence rates were recorded in several countries over the period 1920-1950, and one carefully performed study showed no change in childhood incidence over the period 1925-1955. An almost simultaneous upturn was documented in several countries around the mid-century. The overall pattern since then is one of linear increase, with evidence of a plateau in some high-incidence populations and of a catch-up phenomenon in some low-incidence areas. Steep rises in the age-group under 5 years have been recorded recently. The disease process underlying type 1 diabetes has changed over time and continues to evolve. Understanding why and how this produced the pandemic of childhood diabetes would be an important step toward reversing it. http://www.ncbi.nlm.nih.gov/pubmed/12453886 “Understanding why and how this produced the pandemic of childhood diabetes would be an important step toward reversing it.” “... probably because the pertussis component of most currently available acellular DPT vaccines contains toxoided pertussis toxin that has a significant rate of reversion to active toxin.” Toxicology Mechanisms And Methods • 2002 An analysis of the occurrence of convulsions and death after childhood vaccination Author information Geier DA1, Geier MR. MedCon, Inc., Silver Spring, Maryland USA Abstract The association between the whole-cell diphtheria, tetanus, and pertussis (DTP) vaccine and the occurrence of convulsions and death has long been debated by the medical and scientific communities. A certified copy of the Vaccine Adverse Events Reporting System database was obtained from the Centers for Disease Control, and the data were analyzed using the Microsoft Access program. The results of this analysis reveal a statistically (p < .01) higher rate of occurrence of convulsions and death after whole-cell DTP vaccination than after acellular DTP and DT vaccination, showing, as do the previous findings of many other scientists, that acellular DTP vaccine is much less reactogenic than is whole-cell DTP vaccine. This study helps to validate the decision by American vaccine manufactures and the Food and Drug Administration to use only acellular DTP for the American childhood vaccination schedule. However, acellular DTP vaccine is still more reactogenic than is DT vaccine, probably because the pertussis component of most currently available acellular DPT vaccines contains toxoided pertussis toxin that has a significant rate of reversion to active toxin. This suggests the need to use the newer acellular pertussis vaccines, which are of higher purity and in which the reversion of the pertussis toxin is prevented. http://www.ncbi.nlm.nih.gov/pubmed/20597817 “DTP and MMR vaccine are associated with a transiently increased risk of febrile seizures ...” Paediatric Drugs • 2003 Placing the risk of seizures with pediatric vaccines in a clinical context Author information Davis RL1, Barlow W. Departments of Pediatrics and Epidemiology University of Washington, Seattle, Washington 98101, USA rdavis@u.washington.edu Abstract In this review we discuss the relationship between commonly administered childhood vaccines such as diphtheria-tetanus-whole cell pertussis (DTP) and measles-mumps-rubella (MMR), and the risk of nonfebrile and febrile seizure. We summarize data from the Vaccine Safety Datalink Study and other studies that suggest that DTP and MMR vaccine are associated with a transiently increased risk of febrile seizures, and cause between 5-9 and 2534 additional extra febrile seizures per 100 000 immunized children, respectively. DTP and MMR do not appear to increase the risk of nonfebrile seizures. We discuss some methodologic challenges in studies of vaccines and seizures. Because there is no adequate comparison group that would allow for the study of seizures long after vaccination, studies of seizures are limited to acute events shortly following vaccination. Additionally, while seizures following vaccination are worrisome to parents and physicians alike, observational studies of the neurodevelopmental outcomes of these children are particularly problematic. We discuss how such studies are confounded by the natural history of predisposition to febrile seizures and by the increased diagnostic scrutiny that children with febrile seizures might undergo. Nevertheless, current data suggest that children with febrile seizures do not experience long-term negative effects. Finally, we discuss the creation of new clinics designed specifically to assist physicians in managing the vaccination of children with a personal or family history of seizures. Data from these clinics suggest that vaccination is safe for children with a personal or family history of seizures, but statistical power has been limited. We conclude by discussing the introduction of new vaccines, and note that, even with widespread use, it will take many years before we can be knowledgeable about the risk of rare events with these newly licensed products. http://www.ncbi.nlm.nih.gov/pubmed/?term=14580221 International Pediatrics • Vol. 18 • No. 2 • 2003 by Mark R. Geier, MD, PhD; David A Geier Pediatric MMR Vaccination Safety Abstract Measles, mumps and rubella are viral infections that have the potential to result in globally destructive disorders. Measles, mumps and rubella (MMR) vaccine has helped to dramatically reduce the number of cases of measles, mumps and rubella infection, as well as to reduce the amount of pain and suffering associated with each of these natural infections. The purpose of this study was to analyze the incidence of serious neurologic disorders in a comparative examination between MMR vaccine and a vaccine control group. The Vaccine Adverse Events Reporting System (VAERS) database was analyzed for the incidence rate of permanent brain damage, cerebellar ataxia, autism and mental retardation reported following MMR vaccine and diphtheria, tetanus and whole-cell pertussis (DTwcP) containing-vaccines from 1994 through 2000 in the US. Statistically significant increases in the incidence of serious neurologic disorders following pediatric MMR vaccine in comparison to DTwcP vaccine were found. The potentially globally destructive effects of natural measles, mumps and rubella infections means that continued vaccination is necessary, but improvements in MMR vaccines are needed to improve its safety. These results show that primary pediatric MMR vaccination in children is associated with a marked increase in serious neurologic disorders in comparison to DTwcP vaccination. The increase is statistically significant for cerebellar ataxia, autism, mental retardation and permanent brain damage following primary pediatric MMR vaccination in comparison to DTwcP vaccination. These results are remarkable considering that DTwcP vaccination has been found by the scientific and medical communities to be responsible for permanent neurologic sequellae in children. Another study found 18 cases of neurological complications following live measles vaccine administered between 1971 to 1978 in Hamburg, Germany. A causal connection was assumed by the author in 14 of the cases, resulting in an incidence of 1 per 2,500 vaccinees. The author observed an incidence of 1 per 17,650 vaccinees of abortive encephalopathy following live measles vaccination. In conclusion, this study showed a highly statistically significant increase in serious neurologic conditions following primary pediatric MMR vaccination in comparison to a DTwcP vaccine control group. This finding confirms and extends a number of previous studies showing that patients are at increased risk for developing serious neurologic disorders for about 5-10 days following pediatric MMR vaccination. The pathogenesis of these reactions appears to follow a similar course as in the natural viral infections. In order to alleviate the potential for serious neurologic disorders following primary pediatric MMR vaccination, we recommend that killed MMR vaccine be made available. If live MMR vaccine is to be used, parents should have the option to have each viral component of MMR vaccine administered separately. http://www.tested.net/vaccine/MMRresearch.pdf “These results show that primary pediatric MMR vaccination in children is associated with a marked increase in serious neurologic disorders in comparison to DTwcP vaccination. The increase is statistically significant for cerebellar ataxia, autism, mental retardation and permanent brain damage following primary pediatric MMR vaccination in comparison to DTwcP vaccination. These results are remarkable considering that DTwcP vaccination has been found by the scientific and medical communities to be responsible for permanent neurologic sequellae in children.” Revue Neurologique, Paris • February 2003 Lessons from macrophagic myofasciitis: towards definition of a vaccine adjuvant-related syndrome Author information Gherardi RK. Groupe Nerf-Muscle, Département de Pathologie Hôpital Henri Mondor, Créteil romain.gherardi@hmn.ap-hop-paris.fr Abstract Macrophagic myofasciitis is a condition first reported in 1998, which cause remained obscure until 2001. Over 200 definite cases have been identified in France, and isolated cases have been recorded in other countries. The condition manifests by diffuse myalgias and chronic fatigue, forming a syndrome that meets both Center for Disease Control and Oxford criteria for the so-called chronic fatigue syndrome in about half of patients. One third of patients develop an autoimmune disease, such as multiple sclerosis. Even in the absence of overt autoimmune disease they commonly show subtle signs of chronic immune stimulation, and most of them are of the HLADRB1*01 group, a phenotype at risk to develop polymyalgia rheumatica and rheumatoid arthritis. Macrophagic myofasciitis is characterized by a stereotyped and immunologically active lesion at deltoid muscle biopsy. Electron microscopy, microanalytical studies, experimental procedures, and an epidemiological study recently demonstrated that the lesion is due to persistence for years at site of injection of an aluminum adjuvant used in vaccines against hepatitis B virus, hepatitis A virus, and tetanus toxoid. Aluminum hydroxide is known to potently stimulate the immune system and to shift immune responses towards a Th-2 profile. It is plausible that persistent systemic immune activation that fails to switch off represents the pathophysiologic basis of chronic fatigue syndrome associated with macrophagic myofasciitis, similarly to what happens in patients with post-infectious chronic fatigue and possibly idiopathic chronic fatigue syndrome. Therefore, the WHO recommended an epidemiological survey, currently conducted by the French agency AFSSAPS, aimed at substantiating the possible link between the focal macrophagic myofasciitis lesion (or previous immunization with aluminium-containing vaccines) and systemic symptoms. Interestingly, special emphasis has been put on Th-2 biased immune responses as a possible explanation of chronic fatigue and associated manifestations known as the Gulf war syndrome. Results concerning macrophagic myofasciitis may well open new avenues for etiologic investigation of this syndrome. Indeed, both type and structure of symptoms are strikingly similar in Gulf war veterans and patients with macrophagic myofasciitis. Multiple vaccinations performed over a short period of time in the Persian gulf area have been recognized as the main risk factor for Gulf War syndrome. Moreover, the war vaccine against anthrax, which is administered in a 6shot regimen and seems to be crucially involved, is adjuvanted by aluminium hydroxide and, possibly, squalene, another Th-2 adjuvant. If safety concerns about long-term effects of aluminium hydroxide are confirmed it will become mandatory to propose novel and alternative vaccine adjuvants to rescue vaccine-based strategies and the enormous benefit for public health they provide worldwide. http://www.ncbi.nlm.nih.gov/pubmed/12660567 “Macrophagic myofasciitis is a condition first reported in 1998, which cause remained obscure until 2001. Over 200 definite cases have been identified in France, and isolated cases have been recorded in other countries [many thousands of cases have since been identified]. Electron microscopy, microanalytical studies, experimental procedures, and an epidemiological study recently demonstrated that the lesion is due to persistence for years at site of injection of an aluminum adjuvant used in vaccines against hepatitis B virus, hepatitis A virus, and tetanus toxoid ... If safety concerns about long-term effects of aluminium hydroxide are confirmed it will become mandatory to propose novel and alternative vaccine adjuvants to rescue vaccine-based strategies ...” Arthritis & Rheumatism • February 2003 Chronic fatigue syndrome in patients with macrophagic myofasciitis François-Jérôme Authier MD, PhD, Stéphane Sauvat MD, Julien Champey MD, Irène Drogou MD, Michèle Coquet MD andRomain K. Gherardi MD Abstract Macrophagic myofasciitis (MMF), a condition first reported in France in 1998, is defined by the presence of a stereotyped and immunologically active lesion at deltoid muscle biopsy (1, 2). It was recently demonstrated that this lesion is an indicator of long-term persistence of the immunologic adjuvant aluminum hydroxide within the cytoplasm of macrophages at the site of previous intramuscular (IM) injection (2). MMF is typically detected in patients with diffuse arthromyalgias that have appeared subsequent to aluminum hydroxide administration in the absence of a clearly defined anatomic substratum (2). Patients also report unexplained chronic fatigue (1). These manifestations are reminiscent of the so-called chronic fatigue syndrome (CFS), a poorly understood condition manifesting as disabling fatigue, musculoskeletal pain, sleep disturbance, impaired concentration, and headaches (3). The present study was conducted to determine the proportion of MMF patients fulfilling international criteria for CFS. Thirty unselected consecutive patients with biopsy-proven MMF identified in Créteil and Bordeaux were retrospectively included, regardless of symptoms that led to indication of muscle biopsy. As previously described (2), MMF was assessed by 1) well-circumscribed sheets of denselypacked, large, nonepithelioid macrophages with a finely granular, periodic acid–Schiff–positive content, in the connective structures of deltoid muscle; 2) lymphocytic infiltrates intermingled with macrophages and forming microvascular cuffs; and 3) absence of significant muscle fiber injury (see Figure 1). In each patient, we determined, through both chart review and either direct patient questioning or telephone interview, 1) the presence of chronic fatigue of >6 months’ duration, 2) the alleged severity of fatigue, and 3) the presence of CFS according to Centers for Disease Control and Prevention (CDC) criteria (1994) (4) or Oxford criteria (1991) (5). In addition, in 20 patients, we retrospectively evaluated history of immunization as well as prevalence of fever and neurologic features suggestive of central nervous system demyelinating disease; laboratory findings, including erythrocyte sedimentation rate, creatine kinase levels, and 67Ga scintigraphy; and responsiveness to steroids. Figure 1. Deltoid muscle biopsy samples from patients with macrophagic myofasciitis (MMF). A, Tightly packed, large, basophilic macrophages intermingled with lymphocytes in perifascicular endomysium (frozen section, hematoxylin and eosin stained; original magnification ×400). B, MMF lesion in perimuscular adipose tissue showing immunolocalization of the macrophage marker CD68 (paraffin section, immunoperoxidase procedure; original magnification ×400). C, Adjacent section of the same biopsy sample showing immunolocalization of the T cell marker CD3 (paraffin section, immunoperoxidase procedure; original magnification ×400). The male:female ratio was 1:2. The mean age of patients was 52 years (range 12–78 years). Chronic fatigue was found in 28 of 30 patients (93%) and was considered disabling in 26 of 30 patients (87%). Sixteen patients (53%) fulfilled CFS criteria from either the CDC (14 of 30 patients, 47%) or Oxford (12 of 30 patients, 40%), 11 of 30 patients (37%) fulfilled both CDC and Oxford criteria. Other symptoms, laboratory findings, and steroid responsiveness are detailed in Table 1. 67Ga scintigraphy was performed in 5 patients and showed increased levels of 67Ga uptake in muscle and para-articular areas, mainly in lower limbs. A history of vaccination was available for 19 of 20 patients. All 19 patients had received IM administration of aluminum-containing vaccine prior to the onset of CFS symptoms, and the delay from the last vaccination to the first manifestations ranged from 1 month to 72 months (median 12 months). We have previously determined that myalgias are a major symptom in patients with MMF. The prevalence of myalgias was much higher in such patients than in other patients who had undergone deltoid muscle biopsies at the same time in the same centers (85% versus 45%; P < 0.0001 by Fisher’s exact test) (2). We show now that chronic disabling fatigue is a symptom as frequent as diffuse myalgias in patients with MMF (87%), a finding also noted in the French Institut de Veille Sanitaire exploratory investigation report (6). More than half of the patients also reported other manifestations of CFS. Therefore, MMF should be alternatively considered as a cause of CFS or as an additional exclusion criterion, along with rheumatoid arthritis, lupus, and other diseases, for the diagnosis of idiopathic CFS (4). Consequently, we suggest that patients with CFS should be carefully checked for a history of IM administration of aluminum hydroxide, and, if there is consistent chronology, a muscle biopsy to search for MMF at the site of injection should be considered, even many years after onset of symptoms. Pathophysiology of CFS is still fiercely debated by psychologists, neuroendocrinologists, and immunologists. Chronic immune stimulation that fails to switch off has been previously reported as a possible cause of CFS (7–9), and such a situation may very well result from persistence of the immunologic adjuvant aluminum hydroxide within antigen-presenting cells (2, 10). Therefore, MMF may well represent a paradigm for CFS of immunologic origin. We believe that clarification of MMF pathophysiology would significantly contribute to the understanding of the whole spectrum of chronic fatigue and its syndromes. Full Report: http://onlinelibrary.wiley.com/doi/10.1002/art.10740/full PDF: http://onlinelibrary.wiley.com/doi/10.1002/art.10740/epdf Expert Opinion On Drug Safety • March 2003 A review of hepatitis B vaccination Author information Geier MR1, Geier DA, Zahalsky AC. The Genetic Centers of America 14 Redgate Ct, Silver Spring, MD 20905, USA mgeier@erols.com Abstract Hepatitis B is one of the most important infectious causes of acute and chronic liver disease both in the US and worldwide. In order to combat the life-threatening effects of hepatitis B infection, recombinant hepatitis B vaccines have been developed. The medical and scientific communities have generally accepted that recombinant hepatitis B vaccine - a highly purified, genetically engineered, single antigen vaccine - is a safe vaccine. Information is presented showing that hepatitis B vaccine contains yeast, aluminium, thimerosal and hepatitis B surface antigen epitopes, which may result in hepatitis B vaccine being associated with autoimmune diseases among susceptible adult vaccine recipients. There is little doubt that the benefits of this vaccine overall far outweigh its risks. Physicians and patients should evaluate the risks and benefits of hepatitis B vaccination and, together, make an informed consent decision as to whether to undergo vaccination. Individuals who experience an adverse reaction to hepatitis B vaccination should report it to the Vaccine Adverse Event Reporting System database and be advised that they may be eligible for compensation from the no-fault National Vaccine Injury Compensation Program, administered by the US Court of Claims. The authors strongly urge that additional research be conducted into the molecular basis of adverse events following hepatitis B vaccine administration, so that further recommendations may be made on how to improve their safety profiles. http://www.ncbi.nlm.nih.gov/pubmed/12904111 “Information is presented showing that hepatitis B vaccine contains yeast, aluminium, thimerosal and hepatitis B surface antigen epitopes, which may result in hepatitis B vaccine being associated with autoimmune diseases among susceptible adult vaccine recipients.” Pediatric Neurology • April 2003 Elevated levels of measles antibodies in children with autism Author information Singh VK1, Jensen RL. Department of Biology and Biotechnology Center Utah State University, Logan, Utah, USA Abstract Virus-induced autoimmunity may play a causal role in autism. To examine the etiologic link of viruses in this brain disorder, we conducted a serologic study of measles virus, mumps virus, and rubella virus. Viral antibodies were measured by enzyme-linked immunosorbent assay in the serum of autistic children, normal children, and siblings of autistic children. The level of measles antibody, but not mumps or rubella antibodies, was significantly higher in autistic children as compared with normal children (P = 0.003) or siblings of autistic children (P 42 days after vaccination. In vaccinated persons, the rash may be atypical, maculopapular with few or no vesicles. Cases were laboratory confirmed by polymerase chain reaction, and genotyping was performed to identify the strain associated with the outbreak. RESULTS Of the 545 students who attended the school, 88% returned the questionnaire. Overall varicella vaccination coverage was 96%. Forty-nine varicella cases were identified; 43 were vaccinated. Three of 6 specimens tested were positive by polymerase chain reaction. The median age at vaccination of vaccinated students in the school was 18 months, and the median time since vaccination was 59 months. Forty-four cases occurred in the East Wing, where 275 students in grades kindergarten through 2 were located, and vaccination coverage was 99%. In this wing, varicella attack rates among unvaccinated and vaccinated students were 100% and 18%, respectively. Vaccine effectiveness against varicella of any severity was 82% and 97% for moderate/severe varicella. Vaccinated cases were significantly milder compared with unvaccinated cases. Among the case patients in the East Wing, the median age at vaccination was 18.5 and 14 months among non-case patients. Four cases in the West Wing did not result in further transmission in that wing. The Arkansas strains were the same as the common varicella-zoster virus strain circulating in the United States (European varicella-zoster virus strain). CONCLUSIONS Although disease was mostly mild, the outbreak lasted for approximately 2 months, suggesting that varicella in vaccinated persons was contagious and that 99% varicella vaccination coverage was not sufficient to prevent the outbreak. This investigation highlights several challenges related to the prevention and control of varicella outbreaks with the 1-dose varicella vaccination program and the need for further prevention of varicella through improved vaccine-induced immunity with a routine 2-dose vaccination program. The challenges include: 1-dose varicella vaccination not providing sufficient herd immunity levels to prevent outbreaks in school settings where exposure can be intense, the effective transmission of varicella among vaccinated children, and the difficulty in the diagnosis of mild cases in vaccinated persons and early recognition of outbreaks for implementing control measures. The efficacy of 2 doses of varicella vaccine compared with 1 dose was assessed in a trial conducted among healthy children who were followed for 10 years. The efficacy for 2 doses was significantly higher than for 1 dose of varicella vaccine. This higher efficacy translated into a 3.3-fold lower risk of developing varicella >42 days after vaccination in 2- vs 1-dose recipients. Of the children receiving 2 doses, 99% achieved a glycoproteinbased enzyme-linked immunosorbent assay level of > or =5 units (considered a correlate of protection) 6 weeks after vaccination compared with 86% of children who received 1 dose. The 6-week glycoprotein-based enzyme-linked immunosorbent assay level of > or =5 units has been shown to be a good surrogate for protection from natural disease. Ten years after the implementation of the varicella vaccination program, disease incidence has declined dramatically, and vaccination coverage has increased greatly. However, varicella outbreaks continue to occur among vaccinated persons. Although varicella disease among vaccinated persons is mild, they are contagious and able to sustain transmission. As a step toward better control of varicella outbreaks and to reduce the impact on schools and public health officials, in June 2005, the Advisory Committee on Immunization Practices recommended the use of a second dose of varicella vaccine in outbreak settings. Early recognition of outbreaks is important to effectively implement a 2-dose vaccination response and to prevent more cases. Although the current recommendation of providing a second dose of varicella vaccine during an outbreak offers a tool for controlling outbreaks, a routine 2-dose recommendation would be more effective at preventing cases. Based on published data on immunogenicity and efficacy of 2 doses of varicella vaccine, routine 2-dose vaccination will provide improved protection against disease and further reduce morbidity and mortality from varicella. http://www.ncbi.nlm.nih.gov/pubmed/16740809 Health & Place • June 2006 Environmental mercury release, special education rates, and autism disorder: an ecological study of Texas Author information Palmer RF1, Blanchard S, Stein Z, Mandell D, Miller C. University of Texas Health Science Center San Antonio Department of Family and Community Medicine 7703 Floyd Curl Drive, San Antonio, Texas 78229-3900, USA palmer@uthscsa.edu Abstract The association between environmentally released mercury, special education and autism rates in Texas was investigated using data from the Texas Education Department and the United States Environmental Protection Agency. A Poisson regression analysis adjusted for school district population size, economic and demographic factors was used. There was a significant increase in the rates of special education students and autism rates associated with increases in environmentally released mercury. On average, for each 1,000 lb of environmentally released mercury, there was a 43% increase in the rate of special education services and a 61% increase in the rate of autism. The association between environmentally released mercury and special education rates were fully mediated by increased autism rates. This ecological study suggests the need for further research regarding the association between environmentally released mercury and developmental disorders such as autism. These results have implications for policy planning and cost analysis. http://www.ncbi.nlm.nih.gov/pubmed/16338635 “On average, for each 1,000 lb of environmentally released mercury, there was a 43% increase in the rate of special education services and a 61% increase in the rate of autism.” Vaccine • Volume 24, Issues 31–32 • July 2006 Unexplained cases of sudden infant death shortly after hexavalent vaccination Author Information Zinka B, Rauch E, Buettner A, Ruëff F, Penning R. Report available for purchase: http://www.sciencedirect.com/science/article/pii/S0264410X05004688 CMAJ • August 2006 Two successive outbreaks of mumps in Nova Scotia among vaccinated adolescents and young adults Author Information Gaynor Watson-Creed, Andrea Saunders, Jeffrey Scott, Luis Lowe, Janice Pettipas, and Todd F. Hatchette From Nova Scotia Health Promotion and Protection (Watson-Creed, Saunders, Scott) the Departments of Community Health and Epidemiology (Watson-Creed, Scott), Pediatrics (Scott) and Pathology (Hatchette) Dalhousie University, and the Department of Pathology and Laboratory Medicine (Pettipas, Hatchette) QEII Health Science Centre, Halifax, NS; the Canadian Field Epidemiology Program (Saunders), Public Health Agency of Canada, Ottawa, Ontario and the Respiratory and Enteric Virus Branch (Lowe), Centers for Disease Control and Prevention, Atlanta, GA Abstract Background Before the widespread use of vaccine, mumps was the most common cause of viral meningitis (up to 10% of mumps infections). Vaccination programs have resulted in a drop of more than 99% in the number of reported mumps cases in the United States and Canada. Although rare in Canada, outbreaks have recently occurred throughout the world, including a large outbreak in the United Kingdom, where more than 56,000 cases were reported in 2004–2005. Methods Two recent outbreaks in Nova Scotia were investigated by public health officials. Cases were defined by laboratory confirmation of infection (i.e., isolation of mumps virus by culture) or clinical diagnosis in people epidemiologically linked to a laboratory-confirmed case. The people infected were interviewed to determine possible links and to identify contacts. Mumps virus was cultured from urine and throat specimens, identified via reversetranscriptase polymerase chain reaction (RT-PCR) and subjected to phylogenetic analysis to identify the origin of the strain. Results The first outbreak involved 13 high-school students (median age 14 yr): 9 who had previously received 2 doses of measles–mumps–rubella vaccine (MMR) and 4 who received a single dose. The second outbreak comprised 19 cases of mumps among students and some staff at a local university (median age 23 yr), of whom 18 had received only 1 dose of MMR (the other received a second dose). The viruses identified in the outbreaks were phylogenetically similar and belonged to a genotype commonly reported in the UK. The virus from the second outbreak is identical to the strain currently circulating in the UK and United States. Interpretation The predominance in these outbreaks of infected people of university age not only highlights an environment with potential for increased transmission but also raises questions about the efficacy of the MMR vaccine. The people affected may represent a “lost cohort” who do not have immunity from natural mumps infection and were not offered a 2-dose schedule. Given the current level of mumps activity around the world, clinicians should remain vigilant for symptoms of mumps. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1550754 “... studies especially on neurotoxicity, genotoxicity, or carcinogenicity, are previously published in numerous articles.” Biometals • August 2006 Occurrence, use and potential toxic effects of metals and metal compounds Ana-Maria Florea, Dietrich Büsselberg Abstract Metals and metal compounds are constituents of our natural environment. Their distribution depends on the existence of natural sources (e.g. volcanoes or erosion) and their use in human’s activity. They are transformed naturally (e.g. by bacterial activity) with formation of organic species that influence their mobility and accumulation in abiotic as well as biotic systems. Up to date metal species are released into the environment questioning their influence on human health. Due to their widespread use in human activities such as industry, agriculture and even as medicine (e.g. As, Se, Pt), numerous health risks may be associated with exposure to these substances. Different reports on metal intoxication are documented and studies especially on neurotoxicity, genotoxicity, or carcinogenicity, are previously published in numerous articles. This mini-review gives an overview on the use and the actions of selected metal species of actual scientific concern, with a focus on neuronal cells. http://link.springer.com/article/10.1007%2Fs10534-005-4451-x Pediatric Neurology • August 2006 Acute metabolic crisis induced by vaccination in seven Chinese patients Author information Yang Y1, Sujan S, Sun F, Zhang Y, Jiang Y, Song J, Qin J, Wu X. Department of Pediatrics, Peking University First Hospital Beijing, China yanlingy@vip.sina.com Abstract Seven Chinese patients (5 males and 2 females) with vaccination-induced acute metabolic crisis were reported. Only one male with 21-hydroxylase deficiency had been diagnosed before vaccination. In the remaining six patients, the preexisting diagnoses were not confirmed before the vaccination. Acute metabolic crisis occurred in seven patients between 3 and 12 hours after the administration of Japanese encephalitis, diphtheria, and tetanus toxoids and acellular pertussis, hepatitis B, or measles vaccines. Patients 1 and 2 displayed acute adrenal insufficiencies at the ages of 5 years and 3 months, respectively. Patient 3 had presented with mild motor retardation previously. Patients 4 to 7 were previously healthy, but suffered from fever, seizures, coma, acidosis, and hypoglycemia after being vaccinated. Glutaric aciduria type 1 was evident in case 4. Leigh syndromes were present in Patients 5, 6, and 7. They all died from respiratory failure before 2 years of age. Symmetric foci, cystic cavitations with neuronal loss, and vascular proliferation were observed by postmortem examination. Among the seven patients, although the vaccines were not the primary cause of the acute metabolic crisis, the severe acute episodes occurred coincidentally. http://www.ncbi.nlm.nih.gov/pubmed/16876007 “Seven Chinese patients with vaccination-induced acute metabolic crisis were reported.” “The first rotavirus vaccine ... left instead the unfortunate legacy that live oral rotavirus vaccines may be associated with a serious but rare adverse event: intussusception.” Pediatrics • August 2006 Rotavirus Vaccination and Intussusception: Can We Decrease Temporally Associated Background Cases of Intussusception by Restricting the Vaccination Schedule? Author Information Jennifer H. Tai, MDa, Aaron T. Curns, MPHb, Umesh D. Parashar, MBBS, MPHa, Joseph S. Bresee, MDa, Roger I. Glass, MD, PhDa a. Viral Gastroenteritis Section b. Office of the Director, Division of Viral and Rickettsial Diseases Centers for Disease Control and Prevention, Atlanta, Georgia Abstract OBJECTIVE The first rotavirus vaccine that was licensed in the United States, RotaShield, could have prevented the enormous burden of rotavirus diarrhea in American children but left instead the unfortunate legacy that live oral rotavirus vaccines may be associated with a serious but rare adverse event: intussusception. Although large trials indicate that the next generation of rotavirus vaccines is not associated with this complication, many children likely will develop intussusception by chance alone in the 2-week window after immunization, raising concerns about whether these cases might be “caused” by the vaccine. Our objective for this study was to model and compare the number of temporally associated intussusception events that are expected by chance alone under 2 rotavirus vaccination strategies. CONCLUSIONS Although an age-restricted vaccination schedule substantially reduced the number of intussusception events that were observed in the 2-week postvaccination window when compared with a schedule with fewer restrictions, this decrease was attributable to a lower rate of vaccine coverage rather than a safer schedule of vaccination. The risk for intussusception did not differ significantly between vaccination strategies. Public health policy and education messages for physicians and parents should be developed to anticipate intussusception events that will occur by chance alone but are temporally related to rotavirus vaccination. http://pediatrics.aappublications.org/content/118/2/e258 Multiple Sclerosis • October 2006 Elevated urinary excretion of aluminium and iron in multiple sclerosis Author information Exley C1, Mamutse G, Korchazhkina O, Pye E, Strekopytov S, Polwart A, Hawkins C. Birchall Centre for Inorganic Chemistry and Materials Science Lennard-Jones Laboratories, Keele University, Staffordshire, UK c.exley@chem.keele.ac.uk Abstract Multiple sclerosis (MS) is a chronic, immune-mediated, demyelinating disease of the central nervous system of as yet unknown aetiology. A consensus of opinion has suggested that the disorder is the result of an interplay between environmental factors and susceptibility genes. We have used a battery of analytical techniques to determine if the urinary excretion of i) markers of oxidative damage; ii) iron and iii) the environmental toxin aluminium and its antagonist, silicon, are altered in relapsing-remitting (RRMS) and secondary progressive MS (SPMS). Urinary concentrations of oxidative biomarkers, MDA and TBARS, were not found to be useful indicators of inflammatory disease in MS. However, urinary concentrations of another potential marker for inflammation and oxidative stress, iron, were significantly increased in SPMS (P<0.01) and insignificantly increased in RRMS (P>0.05). Urinary concentrations of aluminium were also significantly increased in RRMS (P<0.001) and SPMS (P <0.05) such that the levels of aluminium excretion in the former were similar to those observed in individuals undergoing metal chelation therapy. The excretion of silicon was lower in MS and significantly so in SPMS (P<0.05). Increased excretion of iron in urine supported a role for iron dysmetabolism in MS. Levels of urinary aluminium excretion similar to those seen in aluminium intoxication suggested that aluminium may be a hitherto unrecognized environmental factor associated with the aetiology of MS. If aluminium is involved in MS then an increased dietary intake of its natural antagonist, silicon, might be a therapeutic option. http://www.ncbi.nlm.nih.gov/pubmed/?term=17086897 “Levels of urinary aluminium excretion similar to those seen in aluminium intoxication suggested that aluminium may be a hitherto unrecognized environmental factor associated with the aetiology of Multiple Sclerosis.” Journal Of Autoimmunity • November 2006 Fibromyalgia, infection and vaccination: two more parts in the etiological puzzle Author information Ablin JN1, Shoenfeld Y, Buskila D. Department of Rheumatology Tel-Aviv Sourasky Medical Center and Sackler Faculty of Medicine Tel-Aviv University, Tel-Aviv, Israel ajacob@post.tau.ac.il Abstract As the pathogenesis of fibromyalgia continues to raise debate, multiple putative triggers have been implicated. The current review summarizes the available data linking fibromyalgia to either infection or vaccination. Multiple infectious agents have been associated with the development of either full-blown fibromyalgia (e.g. hepatits C), or with symptom complexes extensively overlapping with that syndrome (e.g. chronic Lyme disease). The cases of Lyme disease, mycoplasma, hepatits C and HIV are detailed. Despite the described associations, no evidence is available demonstrating the utility of antibiotic or anti-viral treatment in the management of fibromyalgia. Possible mechanistic links between fibromyalgia and HIV are reviewed. Associations have been described between various vaccinations and symptom complexes including fibromyalgia and chronic fatigue syndrome. The case of Gulf War syndrome, a functional multisystem entity sharing many clinical characteristics with fibromyalgia is discussed, with emphasis on the possibility of association with administration of multiple vaccinations during deployment in the Persian Gulf and the interaction with stress and trauma. Based on this example a model is proposed, wherein vaccinations function as co-triggers for the development of functional disorders including fibromyalgia, in conjunction with additional contributing factors. http://www.ncbi.nlm.nih.gov/pubmed/17071055 “Based on this example a model is proposed, wherein vaccinations function as co-triggers for the development of functional disorders including fibromyalgia, in conjunction with additional contributing factors.” Egyptian Journal Of Immunology • 2006 Possible immunological disorders in autism: concomitant autoimmunity and immune tolerance Author information Kawashti MI1, Amin OR, Rowehy NG. Microbiology Department Faculty of Medicine For Women Al Azhar University, Cairo, Egypt Abstract Autism is a pervasive developmental disorder that affect children early in their life. Immunological disorders is one of several contributing factors that have been suggested to cause autism. Thirty autistic children aged 36 years and thirty non-autistic psychologically-free siblings were studied. Circulating IgA and IgG autoantibodies to casein and gluten dietary proteins were detected by enzyme-immunoassays (EIA). Circulating IgG antibodies to measles, mumps and rubella vaccine (M.M.R) and cytomeglovirus were investigated by EIA. Results revealed high seropositivity for autoantibodies to casein and gluten: 83.3% and 50% respectively in autistic children as compared to 10% and 6.7% positivity in the control group. Surprisingly, circulating anti-measles, anti-mumps and anti-rubella IgG were positive in only 50%, 73.3% and 53.3% respectively as compared to 100% positivity in the control group. Anti-CMV IgG was positive in 43.3% of the autistic children as compared to 7% in the control group. It is concluded that, autoimmune response to dietary proteins and deficient immune response to measles, mumps and rubella vaccine antigens might be associated with autism, as a leading cause or a resulting event. Further research is needed to confirm these findings. http://www.ncbi.nlm.nih.gov/pubmed/17974154 “It is concluded that, autoimmune response to dietary proteins and deficient immune response to measles, mumps and rubella vaccine antigens might be associated with autism, as a leading cause or a resulting event.” Vaccine • January 2007 DTP with or after measles vaccination is associated with increased in-hospital mortality in Guinea-Bissau Author information Aaby P1, Biai S, Veirum JE, Sodemann M, Lisse I, Garly ML, Ravn H, Benn CS, Rodrigues A. Projecto de Saúde de Bandim, Apartado 861 Bissau, Guinea-Bissau p.aaby@bandim.org Abstract BACKGROUND The sequence of routine immunisations may be important for childhood mortality. Three doses of diphtheria-tetanus-pertussis vaccine (DTP) should be given at 6, 10, and 14 weeks and measles vaccine (MV) at 9 months of age. The sequence is not always respected. We examined inhospital mortality of children having received DTP with or after measles vaccine. SETTING The only paediatric ward in Bissau, Guinea-Bissau. PARTICIPANTS Children hospitalised during two periods in 1990-1996 and 2001-2002 who had received MV prior to hospitalisation. MAIN OUTCOME MEASURE The all-cause case fatality at the hospital for children aged 6-17 months. RESULT The case fatality was increased for children who had received DTP with or after measles vaccine compared with children who had received measles vaccine as the most recent vaccine, the ratio being 2.53 (1.37-4.67) and 1.77 (0.92-3.41) in the two periods, respectively. The combined estimate was 2.10 (1.34-3.28). These results were not explained by differences in nutritional status, number of doses of DTP or discharge policy. CONCLUSION Administration of DTP with, or after MV, may reduce the beneficial effect of MV. http://www.ncbi.nlm.nih.gov/pubmed/17092614 “The case fatality was increased for children who had received DTP with or after measles vaccine compared with children who had received measles vaccine as the most recent vaccine, the ratio being 2.53 (1.37-4.67) and 1.77 (0.92-3.41) in the two periods, respectively.” Brain Research • May 2007 Effects of postnatal formaldehyde exposure on pyramidal cell number, volume of cell layer in hippocampus and hemisphere in the rat: a stereological study Author information Sarsilmaz M1, Kaplan S, Songur A, Colakoglu S, Aslan H, Tunc AT, Ozen OA, Turgut M, Bas O. Department of Anatomy Firat University School of Medicine Elazig, Turkey Abstract The purpose of the present study was to determine whether exposure of neonatal rats to formaldehyde (FA) had either early or delayed effects on the numbers of pyramidal cells in the cornu ammonis (CA) of the hippocampus. Neonatal Wistar rats were exposed to 0 ppm (control group), 6 ppm and 12 ppm (high concentration group) of FA concentrations throughout the 30-day period following the birth by placing them for 6 h/day in a glass chamber containing FA vapor. Then, some of the animals from each FA-treated group were anesthetized and decapitated at the day 30, and the remaining ones were killed at the day 90. The brains were removed immediately and fixed in 10% neutral-buffered FA solution. The Cavalieri principle was used to determine the volumes of the CA and the entire cerebral hemisphere. The optical fractionator counting method was used to estimate the total number of pyramidal cells in the CA. The appearance of pyramidal cells was normal under light microscopy at both postnatal day (PND) 30 and PND 90 in all groups. There were concentration-related volume changes of CA at PND 30 and PND 90; low concentration of FA significantly increased, whereas high concentration decreased the volume of CA in comparison of the control at PND 30. Importantly, high concentration of FA at PND 90 increased the volume of CA in comparison of the low concentration but not with the control. Furthermore, low and high concentrations of FA decreased the volume of hemisphere at PND 30, whereas a reverse effect of these concentrations was observed at the hemisphere of PND 90 in comparison of the control. In both CA and cerebral hemisphere, an age-related volume decrease in both control and low/high concentration groups were found. On the other hand, there were significant age-related reductions in the total number of pyramidal cells at 90 days of age irrespective of the groups examined. Rats treated with high concentration FA were seen to have significantly fewer pyramidal cell neurons than either the animals treated with low concentration FA or control groups (p<0.01). These observations indicate that pyramidal cells in the hippocampus may be vulnerable to FA exposure during the early period of life. http://www.ncbi.nlm.nih.gov/pubmed/?term=17346681 “These observations indicate that pyramidal cells in the hippocampus may be vulnerable to Formaldehyde exposure during the early period of life.” Journal Of Pediatrics • August 2007 Primary immunization of premature infants with gestational age <35 weeks: cardiorespiratory complications and C-reactive protein responses associated with administration of single and multiple separate vaccines simultaneously Author information Pourcyrous M1, Korones SB, Arheart KL, Bada HS. Department of Pediatrics The University of Tennessee Health Science Center Memphis, Tennessee 38163, USA mpourcyrous@utmem.edu Abstract OBJECTIVE To determine the incidence of cardiorespiratory events and abnormal C-reactive protein (CRP) level associated with administration of a single vaccine or multiple separate vaccines simultaneously. STUDY DESIGN Prospective observational study on 239 preterm infants at > or =2 months of age in the neonatal intensive care unit (NICU). Each infant received either a single vaccine or multiple vaccines on one day. CRP levels and cardiorespiratory manifestations were monitored for 3 days following immunization. RESULTS Abnormal elevation of CRP level occurred in 85% of infants administered multiple vaccines and up to 70% of those given a single vaccine. Overall, 16% of infants had vaccine-associated cardiorespiratory events within 48 hours postimmunization. In logistic regression analysis, abnormal CRP values were associated with multiple vaccines (OR, 15.77; 95% CI 5.10-48.77) and severe intraventricular hemorrhage (IVH) (OR, 2.28; 95% CI 1.02-5.13). Cardiorespiratory events were associated marginally with receipt of multiple injections (OR, 3.62; 95% CI 0.99-13.25) and significantly with gastroesophageal reflux (GER) (OR, 4.76; 95% CI 1.22-18.52). CONCLUSION CRP level is expected to be elevated in the 48 hours following immunization. In a minority of infants immunized, cardiorespiratory events were associated with presumed need for intervention. Underlying medical conditions and possibly multiple injections are associated with cardiorespiratory events. Precautionary monitoring following immunizations is warranted. http://www.ncbi.nlm.nih.gov/pubmed/?term=17643770 “In a minority of infants immunized [16%], cardiorespiratory events were associated with presumed need for intervention.” Pediatrics • August 2007 Risk of Serious Neurologic Disease After Immunization of Young Children in Britain and Ireland Author Information Katherine N. Ward, MA, MB, BChir, PhD, FRCPatha, Naomi J. Bryant, MSca, Nick J. Andrews, MScb, Jennifer S. Bowley, BSca, Anu Ohrling, MDa, Christopher M. Verity, MA, BM, BCh, FRCP, FRCPCH, DCHc, Euan M. Ross, MD, FRCP, FRCPCH, FFPH, DCHd, Elizabeth Miller, BSc, MB, BS, FRCPath, FFPHb a. Centre for Virology (UCL Campus), Division of Infection and Immunity Royal Free and University College Medical School, Windeyer Institute of Medical Sciences, London, UK b. Centre for Infections, Health Protection Agency, London, United Kingdom c. Child Development Centre, Addenbrooke’s Hospital, Cambridge, United Kingdom d. Child Studies Department, King’s College, Strand, London, United Kingdom Abstract OBJECTIVE We sought to investigate the risk of serious neurologic disease after immunization in early childhood. METHODS The results of a 3-year prospective study of children (2–35 months old) in Britain and Ireland with encephalitis and/or severe illness with convulsions and fever were linked to each child’s vaccine history. Cases were reported via the British Paediatric Surveillance Unit’s network. The self-controlled case-series method was used to investigate associations between immunization and acute potential adverse events. The risk periods investigated were 0 to 3 and 0 to 7 days post–diphtheria, tetanus, whole cell pertussis, Haemophilus influenzae type b or meningococcal C conjugate vaccine and 6 to 11 and 15 to 35 days post–measles, mumps, rubella vaccine. RESULTS A total of 157 disease episodes from 155 children met the analytical case definition. There were 11 cases of herpes simplex encephalitis and 23 cases of primary human herpesvirus 6 and/or 7 infection. There was no evidence of a raised relative incidence of serious neurologic disease in any of the specified risk periods with the exception of a raised relative incidence of 5.68 in the 6–11 days after measles, mumps, rubella vaccine. Based on this relative incidence, between 3 and 6 of the 6 cases in this period were estimated to be attributable to the vaccine with a best estimate of 5. The 6 cases all had fever with convulsions lasting >30 minutes; in all but 1, there was complete recovery by discharge from hospital. Of the 5 patients who recovered, 1 had a concurrent primary human herpesvirus 6 infection and one a primary human herpesvirus 7. CONCLUSIONS Six to 11 days after measles, mumps, rubella vaccine there is an increased risk of fever and convulsions lasting >30 minutes. All 6 of the episodes temporally related to immunization met the criteria for complex febrile convulsions. The estimated attributable risk of serious neurological disease was similar to that previously found for measles vaccine. http://pediatrics.aappublications.org/content/120/2/314 “All 6 of the episodes temporally related to immunization met the criteria for complex febrile convulsions.” Journal Of Inorganic Biochemistry • September 2007 Induction of specific micro RNA (miRNA) species by ROS-generating metal sulfates in primary human brain cells Author information Lukiw WJ1, Pogue AI. Neuroscience Center and Department of Ophthalmology Louisiana State University Health Sciences Center New Orleans, LA 70112, USA wlukiu@lsuhsc.edu Abstract Iron- and aluminum-sulfate together, at nanomolar concentrations, trigger the production of reactive oxygen species (ROS) in cultures of human brain cells. Previous studies have shown that following ROS induction, a family of pathogenic brain genes that promote inflammatory signalling, cellular apoptosis and brain cell death is significantly over-expressed. Notably, iron- and aluminum-sulfate induce genes in cultured human brain cells that exhibit expression patterns similar to those observed to be up-regulated in moderate- to late-stage Alzheimer’s disease (AD). In this study we have extended our investigations to analyze the expression of micro RNA (miRNA) populations in iron- and aluminum-sulfate treated human neural cells in primary culture. The main finding was that these ROS-generating neurotoxic metal sulfates also up-regulate a specific set of miRNAs that includes miR-9, miR-125b and miR-128. Notably, these same miRNAs are up-regulated in AD brain. These findings further support the idea that ironand aluminum-sulfates induce genotoxicity via a ROS-mediated up-regulation of specific regulatory elements and pathogenic genes that redirect brain cell fate towards progressive dysfunction and apoptotic cell death. http://www.ncbi.nlm.nih.gov/pubmed/?term=17629564 “Iron- and aluminum-sulfate together, at nanomolar concentrations, trigger the production of reactive oxygen species (ROS) in cultures of human brain cells. Previous studies have shown that following reactive oxygen species (ROS) induction, a family of pathogenic brain genes that promote inflammatory signalling, cellular apoptosis and brain cell death is significantly over-expressed.” Archives Of Neurology • November 2007 Optic Neuritis and Vaccination Investigation: Failure to Consider Significant Sex Differences and Multiple Vaccine Combinations Renata J. M. Engler, MD; Mary Klote, MD; Michael R. Nelson, MD, PhD Abstract In follow-up to recent correspondence related to the study of vaccinations and subsequent optic neuritis by the Centers for Disease Control and Prevention (CDC),1,2 we are deeply concerned regarding the lack of consideration of sex differences in incidence of disease for the ICD-9 code 377.3, a common finding for autoimmune disorders, particularly in young adults aged 18 to 39 years. The Defense Medical Surveillance System (DMSS) demonstrates that in the population of service members of greatest concern, there is a consistent pattern, regardless of year for review, of increased disease incidence by first visit in women compared with men. This sex difference is also independent of race. The Figure was extracted from the remote access program to data contained within the DMSS offered by the Army Medical Surveillance Activity.3 Similar sex differences were identified for ICD-9 codes for optic neuritis, unspecified (377.30); optic papillitis (377.31); retrobulbar neuritis, acute (377.32); and optic neuritis, other (377.39) during the period between January 1, 1998, and December 31, 2003. It is of increasing concern in the context of medical evidence and research that sex differences are not adequately considered in both research design and data analysis. Given the mandatory nature of immunizations in the military health system and the fact that most visits involve complex and sometimes new mixtures, concern for sex-based risk differences is not a minor question and merits far more attention on the agenda of vaccine safety surveillance. http://archneur.jamanetwork.com/article.aspx?articleid=794738&resultClick=3 “we are deeply concerned regarding the lack of consideration of sex differences in incidence of disease ... there is a consistent pattern, regardless of year for review, of increased disease incidence by first visit in women compared with men ...” Report of the Subcommittee on Science and Technology • November 2007 FDA Science and Mission at Risk FDA Mission Statement “The FDA is responsible for protecting the public health by assuring the safety, efficacy, and security of human and veterinary drugs, biological products, medical devices, our nation’s food supply, cosmetics, and products that emit radiation. The FDA is also responsible for advancing the public health by helping to speed innovations that make medicines and foods more effective, safer, and more affordable; and helping the public get the accurate, science-based information they need to use medicines and foods to improve their health.” FINDINGS OF THE SUBCOMMITTEE The FDA cannot fulfill its mission because its scientific base has eroded and its scientific organizational structure is weak. The FDA cannot fulfill its mission because its scientific workforce does not have sufficient capacity and capability. The FDA cannot fulfill its mission because its information technology (IT) infrastructure is inadequate. FDA does not have the capacity to ensure the safety of food for the nation. The development of medical products based on “new science” cannot be adequately regulated by the FDA. The FDA cannot provide the information infrastructure support to regulate products based on new science. The FDA IT infrastructure is obsolete, unstable, and lacks sufficient controls to ensure continuity of operations or to provide effective disaster recovery services. There is insufficient capacity in modeling, risk assessment and analysis. The FDA has experienced decreasing resources in the face of increasing responsibilities. The FDA science agenda lacks a coherent structure and vision, as well as effective coordination and prioritization. The IT workforce is insufficient and suboptimally organized. The FDA has an inadequate and ineffective program for scientist performance. Recommendations of excellent FDA reviews are seldom followed. The FDA has inadequate funding for professional development. The FDA has not taken sufficient advantage of external and internal collaborations. The FDA lacks the information science capability and information infrastructure to fulfill its regulatory mandate. The nation’s food supply is at risk. Crisis management in FDA’s two food safety centers, Center for Food Safety and Applied Nutrition (CFSAN) and Center for Veterinary Medicine (CVM), has drawn attention and resources away from FDA’s ability to develop the science base and infrastructure needed to efficiently support innovation in the food industry, provide effective routine surveillance, and conduct emergency outbreak investigation activities to protect the food supply. FDA’s inability to keep up with scientific advances means that American lives are at risk. While the world of drug discovery and development has undergone revolutionary change — shifting from cellular to molecular and gene-based approaches — FDA’s evaluation methods have remained largely unchanged over the last half century. Likewise, evaluation methods have not kept pace with major advances in medical devices and use of products in combination. The turnover rate in FDA science staff in key scientific areas is twice that of other government agencies. There are insufficient programs of measurement to determine worker performance. There is insufficient investment in professional development, which means that the workforce does not keep up with scientific advances. Finally, for various reasons, the FDA does not have sufficiently extensive collaboration with external scientists, thus limiting infusion of new knowledge and missing opportunities to leverage resources. FDA’s failure to retain and motivate its workforce puts FDA’s mission at risk. Inadequately trained scientists are generally risk-averse, and tend to give no decision, a slow decision or, even worse, the wrong decision on regulatory approval or disapproval. During our encounters with staff and center leadership, we were struck by the near unanimity that the shortage of science staff (due to lack of resources to hire) and the inability to recruit and retain needed expertise are serious, longstanding challenges. Internal expertise and experience to provide the science capability and capacity needed in highly specialized and fast-evolving areas is disturbingly limited. The lack of a trained workforce means that the FDA is ineffective in responding to emerging fields that require individuals and work teams with multidisciplinary skills built on very complex, highly specialized, often esoteric bodies of knowledge. The Subcommittee was extremely disturbed at the state of the FDA IT infrastructure .. the IT workforce is insufficient. The IT situation at FDA is problematic at best — and at worst it is dangerous. Many of the FDA systems reside on technology that has been in service beyond the usual life cycle. Systems fail frequently, and even email systems are unstable — most recently during an E.coli food contamination investigation. More importantly, reports of product dangers are not rapidly compared and analyzed, inspectors’ reports are still hand written and slow to work their way through the compliance system, and the system for managing imported products cannot communicate with Customs and other government systems (and often miss significant product arrivals because the system cannot even distinguish, for example, between road salt and table salt). There are inadequate emergency backup systems in place: recent system failures have resulted in loss of FDA data. Critical data reside in large warehouses sequestered in piles and piles of paper documents. There is no backup of these records, which include valuable clinical trial data. The FDA has inadequate extramural funding programs and collaborations to accelerate the development of critical health information exchanges in order to support clinical trials and pharmacovigilance activities. In contrast to previous reviews that warned crises would arise if funding issues were not addressed, recent events and our findings indicate that some of those crises are now realities and American lives are at risk. http://www.fda.gov/ohrms/dockets/ac/07/briefing/2007-4329b_02_01_FDA%20Report%20on%20Science%20and%20Technology.pdf Medical Veritas • 2008 Current childhood vaccine programs: An overview with emphasis on the Measles-Mumps-Rubella (MMR) vaccine and of its compromising of the mucosal immune system Harold E. Buttram, MD Email: hbuttram1304@comcast.net Abstract Both common observation and official statistics confirm that there have been dramatic increases in chronic physical and mental illnesses in American children, such as autism, asthma, and allergies since the introduction of the MMR vaccine in 1978. Government health officials have denied a relationship with vaccines, but U.S. Congressional hearings on vaccine safety (1999 to Dec. 2004) revealed a total absence of vaccine safety tests that would meet current scientific standards, so that it can be assumed that many vaccine reactions are taking place unrecognized. Prior to the introduction of vaccines, the Th1 cellular immune system of the gastrointestinal and respiratory systems served as the primary defense systems with the Th2 hu- moral immune system in the bone marrow, serving a secondary role. There is a school of thought that the “minor childhood diseases” of earlier times, including measles, mumps, chicken pox, and rubella, which involved the epithelial tissues of skin, respiratory, and/or gastrointestinal tracts, served a necessary purpose in challenging, strengthening, and estab- lishing the dominance of Th1 cellular immune system during early childhood. Current vaccines against these diseases, in contrast, being directed at stimulating antibody production in the bone marrow, are bypassing the cellular immune system and thereby tending to reverse the roles of the cellular and humoral systems, with the former suffering from a lack of challenge. In addition, the cellular immune system is being further compromised by the powerfully immunosuppressive effects of the MMR vaccine. The time is overdue to totally rethink and redirect our current childhood vaccine program. http://www.vacinfo.org/buttram.pdf “Both common observation and official statistics confirm that there have been dramatic increases in chronic physical and mental illnesses in American children, such as autism, asthma, and allergies since the introduction of the MMR vaccine in 1978. Government health officials have denied a relationship with vaccines, but U.S. Congressional hearings on vaccine safety (1999 to Dec. 2004) revealed a total absence of vaccine safety tests that would meet current scientific standards, so that it can be assumed that many vaccine reactions are taking place unrecognized.” Medical Veritas 2008 “This paper demonstrates Vaccines, depression, and neurodegeneration after age 50 years: another reason to avoid the recommended vaccines the known links between: by Russell L. Blaylock, MD, CCN There is growing evidence that a number of the psychiatric disorders are strongly related to glutamate excess. Likewise, recent studies have shown a connection between chronic inflammation and these same disorders. A compelling body of research links these two observations, glutamate excess (an excitotoxicity marker) and chronic inflammation (immune over-reactivity). It is known that systemic activation of the immune system also activates the brain’s special immune system, which is regulated by the microglia. Based on results of studies of the sickness behavior response to natural infections, neuroscientists have deciphered much of the mechanism responsible for the behavioral effects associated with intense systemic immune activation, including social isolation, depression, anxiety, and a loss of appetite. Most of these symptoms are shared by the major depressive disorders. Other studies have linked neurodegeneration and a worsening of neurodegenerative diseases to systemic immune activation. This paper demonstrates the known links between: systemic immune activation, brain microglial activation, and both major depressive disorder and a worsening of neurodegenerative diseases. Because a number of vaccines are being recommended to adults, the risk of precipitating or worsening these disorders is quite real. The mechanism for this process is discussed. http://www.vacinfo.org/man1742_1747.pdf systemic immune activation, brain microglial activation, and both major depressive disorder and a worsening of neurodegenerative diseases. Because a number of vaccines are being recommended to adults, the risk of precipitating or worsening these disorders is quite real.” “Adjuvants ... are challenging to develop and license because adjuvant compounds that stimulate strong protective immunity also frequently induce significant toxicity.” Frontiers In Bioscience • January 2008 Rationally-designed vaccine adjuvants: separating efficacy from toxicity Author information Hauguel TM1, Hackett CJ. Division of Allergy, Immunology, and Transplantation National Institute of Allergy and Infectious Diseases National Institutes of Health, Bethesda, Maryland 20892, USA Abstract Adjuvants, substances included in many vaccines in order to improve immune responses, are challenging to develop and license because adjuvant compounds that stimulate strong protective immunity also frequently induce significant toxicity. Adjuvant design and development has until recently been largely empirical; but with the current knowledge that most adjuvants act via receptors of the innate immune system, molecular-based approaches are rapidly advancing the field. Data support the concept that proinflammatory pathways induced by innate immune receptor triggering underlie many of the observed toxic effects. Importantly, the cellular signaling pathways that lead to inflammation are known, for a number of innate immune receptors, to be distinct from those that are involved in the costimulation of protective adaptive immune responses, leading to approaches for attenuating inflammatory signaling that should lead to safer and more effective vaccine adjuvants. This article addresses whether there is a clear rationale for the separation of toxicity from efficacy in the function of adjuvants based upon innate immune receptor ligands. http://www.ncbi.nlm.nih.gov/pubmed/?term=17981755 “Maternal body weight was lowered at 7.5%. Number of pups born was lowered at 7.5%. Lowered body weight was observed in male and female offspring ...” Reproductive Toxicology • January 2008 Evaluation of developmental neurotoxicity of polysorbate 80 in rats Author information Ema M1, Hara H, Matsumoto M, Hirata-Koizumi M, Hirose A, Kamata E. Division of Risk Assessment, Biological Safety Research Center National Institute of Health Sciences, Tokyo, Japan ema@nihs.go.jp Abstract The developmental neurotoxicity of polysorbate 80 (PS80) was evaluated in rats. Crl:CD(SD) rats were given drinking water containing PS80 at 0, 0.018, 0.13, 1.0, or 7.5% (0, 0.035, 0.245, 1.864, or 16.783ml/kgbw/day) on day 0 of pregnancy through day 21 after delivery. Pregnant rats were allowed to deliver spontaneously. Potential adverse effects of pre- and post-natal exposure on the development and function of the nervous system in offspring of rats given PS80 were examined. Maternal body weight was lowered at 7.5%. Number of pups born was lowered at 7.5%. There were no compound-related effects on locomotor activity of offspring on postnatal days (PNDs) 14-15, 17-18, 20-21 and 33-37. No compound-related changes were found in developmental landmarks, sexual maturation, or reflex responses. Although decreased rate of avoidance responses was noted on PNDs 23-27 in male and female offspring at 7.5%, no compound-related changes were found in performance in the conditioned avoidance response on PNDs 60-67. Histopathological examinations of the brain revealed no toxicological changes. Lowered body weight was observed in male and female offspring at 7.5%. The NOAEL in this study was considered to be 1.0% (1.864ml/mg/kgbw/day). http://www.ncbi.nlm.nih.gov/pubmed/17961976 Vaccine • March 2008 Kinetics of asthma- and allergy-associated immune response gene expression in peripheral blood mononuclear cells from vaccinated infants after in vitro re-stimulation with vaccine antigen Author information Lahdenperä AI1, Nilsson LJ, Regnström K. Division of Paediatrics Department of Clinical and Experimental Medicine Faculty of Health Sciences, Linköping University, 5818 Linköping, Sweden Abstract The global expression of immune response genes in infants after vaccination and their role in asthma and allergy is not clearly understood. Pharmacogenomics is ideally suited to study the involved cellular responses, since the expression of thousands of genes can be assessed simultaneously. Here, array technology was used to assess the expression kinetics of immune response genes with association to asthma and allergy in peripheral blood mononuclear cells (PBMC) of five healthy infants after vaccination with Infanrix-Polio+Hib. At 12h after in vitro restimulation of the PBMC with pertussis toxin (PT) antigen, 14 immune response pathways, 33 allergy-related and 66 asthma-related genes were found activated. http://www.ncbi.nlm.nih.gov/pubmed/?term=18336961 “At 12h after in vitro re-stimulation of the peripheral blood mononuclear cells with pertussis toxin antigen, 14 immune response pathways, 33 allergy-related and 66 asthma-related genes were found activated.” “... Triton X-100-induced apoptosis ...” Leukemia Research • March 2008 Release of cytochrome c from mitochondria precedes Bax translocation/activation in Triton X-100-induced apoptosis Author information Sawai H1, Domae N. Department of Internal Medicine, Osaka Dental University 8-1 Kuzuhahanazonocho, Hirakata, Osaka 573-1121, Japan sawai@cc.osaka-dent.ac.jp Abstract The precise mechanisms by which sublytic concentrations of detergents induce apoptosis remain unclear. Recent studies reported the ability of nonionic detergents such as Triton X-100 to induce conformational change of Bax to the active form in vitro. Here we investigated whether activation of Bax might play a role in Triton X-100-induced apoptosis in cells. Although Bax translocation/activation was inhibited by caspase inhibitors, cytochrome c release from mitochondria was not affected in Triton X-100-induced apoptosis in U-937 cells. These results demonstrate that translocation/activation of Bax occurs downstream of cytochrome c release and caspase activation in Triton X-100-induced apoptosis. http://www.ncbi.nlm.nih.gov/pubmed/17689609 Clinical Vaccine Immunology • March 2008 Considerable Differences in Vaccine Immunogenicities and Efficacies Related to the Diluent Used for Aluminum Hydroxide Adjuvant Author Information Lin Lin,1 Ashraf S. Ibrahim,1,2 Valentina Avanesian,1 John E. Edwards, Jr.,1,2 Yue Fu,1,2 Beverlie Baquir,1 Rebecca Taub,1 and Brad Spellberg1,2,* 1. Division of Infectious Diseases Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center Torrance, California 2. The David Geffen School of Medicine at UCLA Los Angeles, California Abstract We are developing an anticandidal vaccine using the recombinant N terminus of Als3p (rAls3p-N). We report that although more rAls3p-N was bound by aluminum hydroxide diluted in saline than by aluminum hydroxide diluted in phosphate-buffered saline (PBS), its immunogenicity and efficacy were superior in PBS. Thus, protein binding, by itself, may not predict the efficacy of some vaccines with aluminum adjuvants. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2268268/ “Thus, protein binding, by itself, may not predict the efficacy of some vaccines with aluminum adjuvants.” Oxford Journal • Toxicology Science • March 2008 Modeling Neurodevelopment Outcomes and Ethylmercury Exposure from Thimerosal-Containing Vaccines José G. Dórea*,1 and Rejane C. Marques† *Universidade de Brasília, Brasília, DF, Brazil †Fundação Universidade Federal de Rondônia, Porto Velho, RO, Brazil dorea@rudah.com.br Dear Editor, The neurotoxic effects of ethylmercury (EtHg) accidentally consumed in Iraq were sufficient to withdraw ethylmercury-containing fungicides as seed dressing. Despite that, not only did thimerosal continue to be used in pharmaceutical preparations but also toxicological interest in EtHg-derived substances diminished considerably and was never addressed with regard to the small quantities used as a vaccine preservative. Thimerosal-containing vaccines (TCV) have no record of overt clinical neurological consequences due to EtHg, and the plausibility of subtle neurotoxic effects in children has been recognized only recently by the United States and other industrialized countries. In this context, we welcome the interesting work of Berman et al. (2008); it is clear that this assiduous study (in immunologically susceptible mice) took into consideration doses and schedules of TCV-Hg concentrations that had been used in infants in the United States. Their mice model does not, however, cover the full extent of modifying factors associated with TCV-Hg exposure in the majority of immature and newborns around the world that still have to depend on TCV. According to Berman et al. (2008), the United States vaccination scheduled exposed a total of 125 μgHg distributed at 2, 2, and 6 months through TCV (hepatitis B and DTP). This type of vaccine is no longer used in industrialized countries but it is still used all over the world. We know that thimerosal concentrations vary among brands of vaccines and also that immunization schedules vary depending on a country’s health policy; not only that but new outbreaks of disease introduce additional new vaccines (which may contain thimerosal) during the first year of life. As an example, the public health services of Brazil, like other countries, still uses several brands of hepatitis B vaccine (containing thimerosal as preservative) with concentrations ranging from 12.5 to 50 μgHg per 0.5 ml shot. Another salient difference between countries that use TCV (like Brazil) and the United States is that in the former country hepatitis B inoculation starts within the first 12–24 h after birth (Marques et al., 2007) and is administered to low-birth weight ≥2000 g (Ministério, da Saúde, 2006 and premature babies who are also recommended a fourth shot as an additional booster (DI/ DH/CVE, 2006). In such situations, not only toxicokinetics (TK) but especially toxicodynamics (TD) of EtHg are entirely different between a 1-day-old (with different stages of immaturity and birth weight) and a 60-day-old child (as modeled). The newborn presents several physiological degrees of immaturity in the excretory system (kidneys and bile formation) and target organ (central nervous system, CNS) that are important modi- fiers of EtHg TK and TD. These features are inversely accentuated by gestational age and birth weight. Under such circumstances, unbound circulating EtHg in a newborn (and immature) may not be eliminated as fast as in a 2-month-old baby and thus will be readier to cross the more vulnerable blood-brain barrier (BBB). The newborn BBB increases in effectiveness with age; therefore, the free EtHg can more easily penetrate the immature CNS (Dorea, 2007). As a consequence, the smaller the body size and blood volume, the more altered the TD and TK of EtHg. Indeed, Stajich et al. (2000) showed that preterm infants do not metabolize Hg efficiently. Collectively, studies show that larger babies have significantly higher mean liver metallothionein than smaller babies (Dorea, 2007). Factors associated with protein-binding capacity, excretion mechanisms, and enzyme activities are immature in the neonate and modulate differences in adverse effects between newborns and infants exposed to neurotoxic substances. During the period of immaturity, not only plasma albumin but also total protein concentrations decrease (Dorea, 2007). The best example in differences between neurotoxic effects is the type of albumin and competition for binding sites (due to increased circulatory concentrations of bilirubin). Albumin binding (to bilirubin) is less effective during the first postnatal days and, as a consequence, excess free bilirubin can cross the BBB at early stages of the postnatal CNS immaturity and cause brainstem abnormalities; albumin priming can be effective in attenuating effects caused by unbound bilirubin (Dorea, 2007). We do not dispute the conclusions drawn by Berman et al. regarding Hg and the neurobiology of autism; however, we think it is possible to take their findings one step further in regards to thimerosal neurotoxicity. We contend that these findings are appropriate for U.S.-like scenarios (as intended by the authors) but are not sufficient to address the current TCV schedules in the majority of newborns and infants around the world. TCV are used worldwide in vaccination schedules that include more of these vaccines at an earlier age. Unfortunately, the differences that set newborns (especially low-birth-weights and prematures) apart from 2-month-old infants have not yet been modeled in experimental studies and remain neglected in TK and TD knowledge of TCV-EtHg exposure. We hope that studies like Berman et al. (2008) can inspire conventional toxicology to address uncertainties regarding current serial EtHg exposure in newborns and infants that have to take TCV. Full Report http://toxsci.oxfordjournals.org/content/103/2/414.long Rheumatology International • April 2008 HBV vaccine and dermatomyositis: is there an association? Author information Altman A1, Szyper-Kravitz M, Shoenfeld Y. Center for Autoimmune Diseases and Department of Medicine Beth Sheba Tel-Hashomer, Sackler Faculty of Medicine Tel Aviv University, Tel Aviv, Israel Abstract The etiology of dermatomyositis is unknown, but immune mechanisms play an important role. Several dermatological manifestations have been reported among carriers of hepatitis B surface antigen, and after vaccination with the HBV vaccine. Almost all the skin reactions described were peculiar skin eruptions suggestive of an immune complex reaction. Some authors described the occurrence of dermatomyositis after BCG and influenza vaccination. We report a case of a 6-year-old child, who was vaccinated for hepatitis B virus and developed a flu-like disease accompanied by a skin rash, which had the typical features of dermatomyositis. The association of vaccination with autoimmunity is discussed. http://www.ncbi.nlm.nih.gov/pubmed/18034245 “Several dermatological manifestations have been reported among carriers of hepatitis B surface antigen, and after vaccination with the HBV vaccine. Some authors described the occurrence of dermatomyositis after BCG and influenza vaccination. The association of vaccination with autoimmunity is discussed.” Clinical Rheumatology • May 2008 Polyglandular autoimmunity with macrophagic myofasciitis Author information Theeler BJ1, Simper NB, Ney JP. Department of Neurology Madigan Army Medical Center 9040A Fitzsimmons Dr., Tacoma WA 98431, USA btheeler@hotmail.com “This rare and recently described muscle disorder Abstract is seen in patients exposed to We report a man with chronic fatigue, multiple autoimmune disorders, and a muscle biopsy consistent with macrophagic myofasciitis. This rare and recently described muscle disorder is seen in patients exposed to vaccinations with aluminum hydroxide adjuvant. This case highlights the relationship between macrophagic myofasciitis and autoimmunity. vaccinations with aluminum http://www.ncbi.nlm.nih.gov/pubmed/?term=18180978 hydroxide adjuvant.” Toxicological & Environmental Chemistry • June 2008 Hepatitis B triple series vaccine and developmental disability in US children aged 1–9 years Author Information Carolyn Gallaghera & Melody Goodmana Abstract This study investigated the association between vaccination with the Hepatitis B triple series vaccine prior to 2000 and developmental disability in children aged 1–9 years (n = 1824), proxied by parental report that their child receives early intervention or special education services (EIS). National Health and Nutrition Examination Survey 1999–2000 data were analyzed and adjusted for survey design by Taylor Linearization using SAS version 9.1 software, with SAS callable SUDAAN version 9.0.1. The odds of receiving EIS were approximately nine times as great for vaccinated boys (n = 46) as for unvaccinated boys (n = 7), after adjustment for confounders. This study found statistically significant evidence to suggest that boys in United States who were vaccinated with the triple series Hepatitis B vaccine, during the time period in which vaccines were manufactured with thimerosal, were more susceptible to developmental disability than were unvaccinated boys. http://www.fourteenstudies.com/pdf/hep_b.pdf This report is also referenced [17] in 2008 United Nations Environmental Program (UNEP) report under the subheading ‘New Evidence’ “The odds of receiving special education services were approximately nine times as great for vaccinated boys (n = 46) as for unvaccinated boys (n = 7), after adjustment for confounders. This study found statistically significant evidence to suggest that boys in United States who were vaccinated with the triple series Hepatitis B vaccine, during the time period in which vaccines were manufactured with thimerosal, were more susceptible to developmental disability than were unvaccinated boys.” United Nations Report: http://www.who.int/immunization/sage/meetings/2012/april/Pichichero_Update_on_safety.pdf BMJ • June 2008 Effect of 50,000 IU vitamin A given with BCG vaccine on mortality in infants in Guinea-Bissau: randomised placebo controlled trial Author information Benn CS1, Diness BR, Roth A, Nante E, Fisker AB, Lisse IM, Yazdanbakhsh M, Whittle H, Rodrigues A, Aaby P. Bandim Health Project, Statens Serum Institut Artillerivej 5, 2300 Copenhagen S, Denmark cb@ssi.dk Abstract OBJECTIVE To investigate the effect of high dose vitamin A supplementation given with BCG vaccine at birth in an African setting with high infant mortality. DESIGN Randomised placebo controlled trial. Setting Bandim Health Project’s demographic surveillance system in Guinea-Bissau, covering approximately 90,000 inhabitants. Participants 4345 infants due to receive BCG. INTERVENTION Infants were randomised to 50,000 IU vitamin A or placebo and followed until age 12 months. MAIN OUTCOME MEASURE Mortality rate ratios. RESULTS 174 children died during follow-up (mortality=47/1000 person-years). Vitamin A supplementation was not significantly associated with mortality; the mortality rate ratio was 1.07 (95% confidence interval 0.79 to 1.44). The effect was 1.00 (0.65 to 1.56) during the first four months and 1.13 (0.75 to 1.68) from 4 to 12 months of age. The mortality rate ratio in boys was 0.84 (0.55 to 1.27) compared with 1.39 (0.90 to 2.14) in girls (P for interaction=0.10). An explorative analysis revealed a strong interaction between vitamin A and season of administration. CONCLUSIONS Vitamin A supplementation given with BCG vaccine at birth had no significant benefit in this African setting. Although little doubt exists that vitamin A supplementation reduces mortality in older children, a global recommendation of supplementation for all newborn infants may not contribute to better survival. TRIAL REGISTRATION Clinical trials NCT00168597. Full Report: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2432170/ “Vitamin A supplementation given with BCG vaccine at birth had no significant benefit in this African setting.” European Journal Of Internal Medicine • July 2008 “A 12 year-old girl, without a relevant previous history, Status epilepticus and lymphocytic pneumonitis following hepatitis B vaccination taking no drugs, developed a seizure attack followed by Author information de Carvalho JF1, Shoenfeld Y. Rheumatology Division São Paulo University School of Medicine São Paulo, Brazil Abstract The case reported refers to a patient who developed status epilepticus in the day of her third dose of hepatitis B vaccination and we review the literature on this subject. A 12 year-old girl, without a relevant previous history, taking no drugs, developed a seizure attack followed by unconsciousness, and eventually died after three days of her third dose of hepatitis B (HB) vaccination. Autopsy study revealed cerebral edema with congestion and herniation and diffuse interstitial type pneumonitis. There seem to be a straight forward time relationship between the third HB vaccine, the event of convulsion and the sudden death of the patient. We suggest that, in some cases, vaccination may be the triggering factor for autoimmune and neurological disturbances in genetically predisposed individuals and physicians should be aware of this possible association. http://www.ncbi.nlm.nih.gov/pubmed/18549949 unconsciousness, and eventually died after three days of her third dose of hepatitis B (HB) vaccination. Autopsy study revealed cerebral edema with congestion and herniation and diffuse interstitial type pneumonitis. There seem to be a straight forward time relationship between the third HB vaccine, the event of convulsion and the sudden death of the patient. We suggest that, in some cases, vaccination may be the triggering factor for autoimmune and neurological disturbances in genetically predisposed individuals ...” Forensic Science International • August 2008 Beta-tryptase and quantitative mast-cell increase in a sudden infant death following hexavalent immunization Author information D’Errico S1, Neri M, Riezzo I, Rossi G, Pomara C, Turillazzi E, Fineschi V. “A fatal case of a 3-month-old female infant, who died Department of Forensic Pathology, University of Foggia Ospedale Colonnello D’Avanzo Via degli Aviatori 1, 71100 Foggia, Italy within 24 h of vaccination with hexavalent vaccine is Abstract The association between sudden infant death syndrome and immunization is frequently discussed. Serious adverse events following vaccination have generally been defined as those adverse events that result in permanent disability, hospitalization or prolongation of hospitalization, life threatening illness, congenital anomaly or death. They are generally referred to the inherent properties of the vaccine (vaccine reaction) or some error in the immunization process (programme error). The event could also be totally unrelated but only temporally linked to immunization (coincidental event). A fatal case of a 3-month-old female infant, who died within 24 h of vaccination with hexavalent vaccine is presented. Clinical data, post-mortem findings (acute pulmonary oedema, acute pulmonary emphysema), quali-quantitative data collected from immunohistochemical staining (degranulating mast cells) and laboratory analysis with a high level of beta-tryptase in serum, 43.3 microg/l, allows us to conclude that acute respiratory failure likely due to post hexavalent immunization-related shock was the cause of death. http://www.ncbi.nlm.nih.gov/pubmed/18538957 presented. Clinical data, post-mortem findings (acute pulmonary oedema, acute pulmonary emphysema), quali-quantitative data collected from immunohistochemical staining (degranulating mast cells) and laboratory analysis with a high level of beta-tryptase in serum, 43.3 microg/l, allows us to conclude that acute respiratory failure likely due to post hexavalent immunization-related shock was the cause of death.” The Journal of Immunology • April 15, 2008 The Adjuvants Aluminum Hydroxide and MF59 Induce Monocyte and Granulocyte Chemoattractants and Enhance Monocyte Differentiation toward Dendritic Cells Author Information Anja Seubert, Elisabetta Monaci, Mariagrazia Pizza, Derek T. O’Hagan and Andreas Wack Novartis Vaccines, Siena, Italy Abstract Aluminum hydroxide (alum) and the oil-in-water emulsion MF59 are widely used, safe and effective adjuvants, yet their mechanism of action is poorly understood. We assessed the effects of alum and MF59 on human immune cells and found that both induce secretion of chemokines, such as CCL2 (MCP-1), CCL3 (MIP-1∼), CCL4 (MIP-1∼), and CXCL8 (IL-8), all involved in cell recruitment from blood into peripheral tissue. Alum appears to act mainly on macrophages and monocytes, whereas MF59 additionally targets granulocytes. Accordingly, monocytes and granulocytes migrate toward MF59-conditioned culture supernatants. In monocytes, both adjuvants lead to increased endocytosis, enhanced surface expression of MHC class II and CD86, and down-regulation of the monocyte marker CD14, which are all phenotypic changes consistent with a differentiation toward dendritic cells (DCs). When monocyte differentiation into DCs is induced by addition of cytokines, these adjuvants enhanced the acquisition of a mature DC phenotype and lead to an earlier and higher expression of MHC class II and CD86. In addition, MF59 induces further up-regulation of the maturation marker CD83 and the lymph node-homing receptor CCR7 on differentiating monocytes. Alum induces a similar but not identical pattern that clearly differs from the response to LPS. This model suggests a common adjuvant mechanism that is distinct from that mediated by danger signals. We conclude that during vaccination, adjuvants such as MF59 may increase recruitment of immune cells into the injection site, accelerate and enhance monocyte differentiation into DCs, augment Ag uptake, and facilitate migration of DCs into tissue-draining lymph nodes to prime adaptive immune responses. Full Report: http://www.jimmunol.org/content/180/8/5402.full “Aluminum hydroxide (alum) and the oil-in-water emulsion MF59 [squalene] are widely used, safe and effective adjuvants, yet their mechanism of action is poorly understood.” Autoimmunity Review • October 2008 Chronic fatigue syndrome with autoantibodies— the result of an augmented adjuvant effect of hepatitis-B vaccine and silicone implant “... the changes induced by MF59 and alum share common features …” Author information Nancy AL1, Shoenfeld Y. Center for Autoimmune Diseases Department of Medicine Beth Sheba Medical Center Tel-Hashomer, Israel Abstract Background Chronic fatigue syndrome (CFS) that defines by prolonged fatigue and other manifestations, was recently integrated into a spectrum of central sensitivity syndromes including several diseases as fibromylagia. CFS etiology is multi-factorial commonly triggered by infectious agents. Vaccines, induce an immune response similarly to infections, and may trigger just like infections autoimmune diseases, CFS and fibromyalgia. Furthermore vaccines contain an adjuvant which enhances their immune stimulation. Case Presentation A 56-year-old woman was diagnosed with CFS accompanied by fibromyalgia, demyelination and autoantibodies. Her illness begun following the 2nd dose of hepatitis-B vaccine, and was aggravated by the 3rd vaccination. She underwent silicone breast implantation 6 years before vaccination with no adverse events. However, between the 2nd and 3rd vaccination she suffered a breast injury with local inflammation. Upon explanation of her breast implants silicone leak was observed. Discussion Vaccines have been reported to precede CFS mainly following exposure to multiple vaccinations (e.g. the Gulf war syndrome), or as an adverse response to the vaccine adjuvant (e.g. the macrophagic myofasciitis syndrome). Silicone is considered an adjuvant to the immune system, and may induce “the adjuvant disease”. Silicone implant, especially silicone leak relationship with autoimmunity and CFS has been the focus of considerable debates. Conclusion Our patient illness started following hepatitis-B vaccine, suggesting that it was caused or accelerated by vaccination. In parallel to vaccination our patient suffered from breast injury, which might represent the time of silicone leak. The exposure to the adjuvant, silicone, might have augmented her immune response to the vaccine. To the best of our knowledge this is the first case of combined adverse effect to vaccine and silicone. Vaccine safety in individuals with silicone implants requires further studies. http://www.ncbi.nlm.nih.gov/pubmed/18725327 “Vaccines have been reported to precede Chronic Fatigue Syndrome mainly following exposure to multiple vaccinations (e.g. the Gulf war syndrome), or as an adverse response to the vaccine adjuvant (e.g. the macrophagic myofasciitis syndrome).” Pediatric Infectious Disease Journal • October 2008 Mumps epidemiology and immunity: the anatomy of a modern epidemic Author information Anderson LJ1, Seward JF. Division of Viral Diseases National Center for Immunization and Respiratory Diseases Centers for Disease Control and Prevention Atlanta, GA 30333, USA lja2@cdc.gov Abstract The success of the measles, mumps, and rubella 2-dose vaccination program led public health officials in 1998 to set a goal to eliminate endemic transmission of mumps virus by 2010 in the United States. The large outbreak of mumps in the spring of 2006 has led public health officials to re-evaluate this goal and to recognize that the transmission and epidemiology of mumps in highly vaccinated populations may be different than anticipated. During 2006, a total of 6584 confirmed and probable cases of mumps were reported to the Centers for Disease Control and Prevention and most of these, 5865, occurred between January 1 and July 31. The peak of the outbreak was in April and seemed to be focused on college campuses in 9 midwestern states with Iowa having the highest attack rate. College campuses with mumps outbreaks included ones with 77% to 97% of students having had 2 doses of a mumps vaccine. Diagnosing mumps proved to be problematic in vaccinated persons (ie, laboratory tests seemed to be insensitive and some apparent mumps cases had mild nonclassic illness). The outbreak demonstrated that mumps can sometimes transmit efficiently in highly vaccinated populations and the clinical and laboratory diagnosis of mumps in vaccinated persons is more difficult than in naive persons. The reason for this mumps outbreak is not clear but probably results from multiple factors contributing to an overall increase in susceptibility and/or transmission. http://www.ncbi.nlm.nih.gov/pubmed/18820583 “The outbreak demonstrated that mumps can sometimes transmit efficiently in highly vaccinated populations and the clinical and laboratory diagnosis of mumps in vaccinated persons is more difficult than in naive persons.” Vaccine • November 2008 Vaccine immunogenetics: bedside to bench to population Author information Poland GA1, Ovsyannikova IG, Jacobson RM. Mayo Vaccine Research Group The Program in Translational Immunovirology and Biodefense Mayo Clinic College of Medicine, Rochester, MN 55905, USA poland.gregory@mayo.edu Abstract The immunogenetic basis for variations in immune response to vaccines in humans remains largely unknown. Many factors can contribute to the heterogeneity of vaccine-induced immune responses, including polymorphisms of immune response genes. It is important to identify those genes involved directly or indirectly in the generation of the immune response to vaccines. Our previous work with measles reveals the impact of immune response gene polymorphisms on measles vaccine-induced humoral and cellular immune responses. We demonstrate associations between genetic variations (single nucleotide polymorphisms, SNPs) in HLA class I and class II genes, cytokine, cell surface receptor, and toll-like receptor genes and variations in immune responses to measles vaccine. Such information may provide further understanding of genetic restrictions that influence the generation of protective immune responses to vaccines, and eventually the development of new vaccines. http://www.ncbi.nlm.nih.gov/pubmed/18598732 “The immunogenetic basis for variations in immune response to vaccines in humans remains largely unknown.” Alternative Therapies In Health And Medicine • November 2008 The history of vaccinations in the light of the autism epidemic Author information Cave SF Cypress Integrative Medicine Baton Rouge, Louisiana, USA Abstract Autism has been characterized as a behavioral disorder since it was first described by Leo Kanner in 1943. The number of autistic children has increased over the last decade. The incidence of autism was 1 in 10000 before the 1970s and has steadily increased to 1 in 150 in 2008 with a male:female predominance of 4:1. The cause of this epidemic has remained unknown, but several hypotheses have been studied. Many of these suggest an environmental trigger, such as the ethyl mercury contained in the preservative thimerosal, which has been used in vaccines since 1931. Other possible triggers associated with vaccinations are chemical toxins and live viruses. James has published studies suggesting a genetic predisposition in the families of autistic children, exposing them to a deficiency in glutathione and an inability to detoxify heavy metals. Vargas has shown autism to encompass ongoing inflammation in the brains of autistic children. The Hannah Poling vaccine decision was a landmark case. Poling’s family was awarded funds for ongoing medical care of an autistic child who was found to have mitochondrial dysfunction exacerbated by vaccines that left her with autistic behavior and seizures. Several studies have emerged supporting the fact that a significant number of autistic children do have mitochondrial dysfunction. The impact that the Poling case will have on the ability of parents of autistic children to gain access to funds to enable them to properly care for their children remains to be seen. http://www.ncbi.nlm.nih.gov/pubmed/19043939 “Poling’s family was awarded funds for ongoing medical care of an autistic child who was found to have mitochondrial dysfunction exacerbated by vaccines that left her with autistic behavior and seizures. Several studies have emerged supporting the fact that a significant number of autistic children do have mitochondrial dysfunction. The impact that the Poling case will have on the ability of parents of autistic children to gain access to funds to enable them to properly care for their children remains to be seen.” European Journal Of Internal Medicine • December 2008 Systemic polyarteritis nodosa following hepatitis B vaccination Author information de Carvalho JF1, Pereira RM, Shoenfeld Y. Rheumatology Division São Paulo University School of Medicine São Paulo, Brazil Abstract The authors report a patient who developed systemic polyarteritis nodosa two months after hepatitis B vaccination and review the literature concerning this vaccination and the development of autoimmune conditions, mainly vasculitis. A 14-year-old boy who had no relevant previous history and who was not taking any drugs presented with a livedo reticularis, fever, loss of weight, testicular pain, and paresthesias two months after receiving the third dose of a hepatitis B vaccination. Inflammatory parameters (ESR and CRP) were high. The patient met the ACR diagnostic criteria for polyarteritis nodosa. He received corticosteroids and immunosuppressants and showed improvement. After reviewing the 27 cases of vasculitis after hepatitis B vaccination reported in the current literature, the authors suggest that, in some cases, vaccination may be the triggering factor for vasculitis in individuals with a genetic predisposition. Physicians should be aware of this possible association. http://www.ncbi.nlm.nih.gov/pubmed/19046721 “After reviewing the 27 cases of vasculitis after hepatitis B vaccination reported in the current literature, the authors suggest that, in some cases, vaccination may be the triggering factor for vasculitis in individuals with a genetic predisposition.” “There are currently over 100 human diseases that are considered to be autoimmune or chronic inflammatory affecting 5-10% of the world population and spanning through all medical specialties.” Journal Of Autoimmunity • December 2008 The autoimmunologist: geoepidemiology, a new center of gravity, and prime time for autoimmunity Author information Shoenfeld Y1, Selmi C, Zimlichman E, Gershwin ME. Department of Medicine B, Center for Autoimmune Diseases, Sheba Medical Center Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel shoenfel@post.tau.ac.il Abstract There are currently over 100 human diseases that are considered to be autoimmune or chronic inflammatory affecting 5-10% of the world population and spanning through all medical specialties. As a result, health care costs are enormous and the clinical management is often challenging, particularly considering the comorbidity rates and the multi-organ involvement of each condition. We herein propose the creation of a new specialist, coined the autoimmunologist, to overcome the current limitations in the diagnostic process and clinical follow-up of patients with autoimmune diseases. More importantly, we also propose the creation of regional centers of excellence in autoimmunity where clinical research and management, as well as basic research may be united and interact in ideal synergy to ultimately create real translational research and provide better health care. http://www.ncbi.nlm.nih.gov/pubmed/?term=18838248 “In our study Oral Polio Virus at birth had a sex-differential effect on mortality.” PLoS ONE • 2008 Sex-Differential Effect on Infant Mortality of Oral Polio Vaccine Administered with BCG at Birth in Guinea-Bissau—A Natural Experiment Christine Stabell Benn,1,* Ane Bærent Fisker,2 Amabelia Rodrigues,2 Henrik Ravn,1 Erliyani Sartono,3 Hilton Whittle,4 Maria Yazdanbakhsh,3 and Peter Aaby2 1. Bandim Health Project, Statens Serum Institut, Copenhagen, Denmark 2. Bandim Health Project, Indepth Network, Bissau, Guinea-Bissau 3. Department of Immunoparasitology, Leiden University Medical Centre 4. The MRC Laboratories, Fajara, The Gambia Beverley J. Shea, Editor Abstract Background The policy to provide oral polio vaccine (OPV) at birth was introduced in low-income countries to increase coverage. The effect of OPV at birth on overall child mortality was never studied. During a trial of vitamin A supplementation (VAS) at birth in Guinea-Bissau, OPV was not available during several periods. We took advantage of this “natural experiment” to test the effect on mortality of receiving OPV at birth. Methodology Between 2002 and 2004, the VAS trial randomised normal-birth-weight infants to 50,000 IU VAS or placebo administered with BCG. Provision of OPV at birth was not part of the trial, but we noted whether the infants received OPV or not. OPV was missing during several periods in 2004. We used Cox proportional hazards models to compute mortality rate ratios (MRR) of children who had received or not received OPV at birth. Principal Findings A total of 962 (22.1%) of the 4345 enrolled children did not receive OPV at birth; 179 children died within the first year of life. Missing OPV at birth was associated with a tendency for decreased mortality (adjusted MRR = 0.69 (95% CI = 0.46–1.03)), the effect being similar among recipients of VAS and placebo. There was a highly significant interaction between OPV at birth and sex (p = 0.006). Not receiving OPV at birth was associated with a weak tendency for increased mortality in girls (1.14 (0.70–1.89)) but significantly decreased mortality in boys (0.35 (0.18–0.71)). Conclusions In our study OPV at birth had a sex-differential effect on mortality. Poliovirus is almost eradicated and OPV at birth contributes little to herd immunity. A randomised study of the effect of OPV at birth on overall mortality in both sexes is warranted. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2605256/ Medical Veritas • 2008 Current childhood vaccine programs: An overview with emphasis on the Measles-Mumps-Rubella (MMR) vaccine and of its compromising of the mucosal immune system Harold E. Buttram, MD hbuttram1304@comcast.net Abstract Both common observation and official statistics confirm that there have been dramatic increases in chronic physical and mental illnesses in American children, such as autism, asthma, and allergies since the introduction of the MMR vaccine in 1978. Government health officials have denied a relationship with vaccines, but U.S. Congressional hearings on vaccine safety (1999 to Dec. 2004) revealed a total absence of vaccine safety tests that would meet current scientific standards, so that it can be assumed that many vaccine reactions are taking place unrecognized. Prior to the introduction of vaccines, the Th1 cellular immune system of the gastrointestinal and respiratory systems served as the primary defense systems with the Th2 humoral immune system in the bone marrow, serving a secondary role. There is a school of thought that the “minor childhood diseases” of earlier times, including measles, mumps, chicken pox, and rubella, which involved the epithelial tissues of skin, respiratory, and/or gastrointestinal tracts, served a necessary purpose in challenging, strengthening, and establishing the dominance of Th1 cellular immune system during early childhood. Current vaccines against these diseases, in contrast, being directed at stimulating antibody production in the bone marrow, are bypassing the cellular immune system and thereby tending to reverse the roles of the cellular and humoral systems, with the former suffering from a lack of challenge. In addition, the cellular immune system is being further compromised by the powerfully immunosuppressive effects of the MMR vaccine. The time is overdue to totally rethink and redirect our current childhood vaccine program. Concerns about increasing incidence of childhood autism and related disorders Many years ago in our medical practice we began asking teachers if, during their teaching careers, they had observed a change in children. Without exception, they replied that there had been a dramatic change, most notably since the early 1980s. Steadily increasing numbers of children, they reported, were showing autistic-like behaviors, were restless, impulsive, less focused, less able to concentrate, and therefore less able to learn. It has been documented that a sharp and persisting rise in the incidence of childhood autism commenced following the 1978 introduction of the MMR vaccine in the U.S.A. [1-2], a time when mercury-laced Hepatitis B and Hemophilus influenza type b vaccines were also introduced. For a number of years previously the live measles, mumps, and rubella vaccines had been administered separately with negligible increases in autism. It was only after they were combined that the incidence of autism began soaring with 1 in 150 children up to eight years age, according to U.S. multisite study in 2000 [3], as compared with 1 in 10,000 several generations ago. According to more recent information, the incidence of autism may be even higher, with 1 in 88 military children in U.S.A. having autism [4], and according to the Vaccine Autoimmune Project (VAP), one in 67 in U.S.A. and 1 in 86 in the United Kingdom having autism [5]. Considering that the incidence of autism in boys is approximately four times greater than in girls, the relative incidence of autism in boys would be even greater. Finally, as estimated by VAP, the average lifetime cost of caring for autistic children will be about $3.2 million dollars per child. In addition to the autism epidemic, in 2004 almost five million children were classified as learning disabled [6], which represents a three-fold increase since 1976-7 according to the Digest of Education Statistics [7]. Comparable increases have taken place in attention deficit hyperactive disorder (ADHD), with four and one half million children between ages 3 and 17 being diagnosed with this condition in 2004 [8]. In a bulletin sponsored by the American Academy of Pediatrics, January, 2004, entitled “AUTISM A.L.A.R.M.”, in addition to an announcement of the increasing prevalence of autism at that time, it was announced that 1 in 6 American children were diagnosed with a developmental disorder and/or behavioral disorder. In a similar fashion the incidence of asthma has increased from roughly two and a half million children, ages 0-17 years in 1979 [8] to nine million children 0-17 years in 2004 [8], (roughly 12% of that age group), a time period in which this age-group population increased 114% compared to a 360% increase in asthma. Autoimmune diseases are also increasing, including juvenile diabetes, multiple sclerosis, Guillain-Barre Syndrome, and Crohn’s inflammatory bowel disease. Based on the work of Vijendra Singh, who demonstrated marked elevations of brain antibodies in the form of myelin basic protein antibodies in autistic children [9-10], autism itself can be considered an autoimmune disorder. Current studies implicating vaccines as primary causal agents of autism and related disorders In what may be the most comprehensive publication to date on the pathophysiology of adverse vaccine reactions, Russell Blaylock has compiled a mass of evidence that repeated stimulation of the systemic immune system results in first priming of microglia of the developing brain, following by intense microglial reaction with each successive series of vaccinations [16] In explanation, microglia and astrocytes are first-line-immunological responder cells located in the brain which defend against foreign infectious invaders. Normally this response, such as to a viral infection, is of limited duration and harmless to the brain. However, when the microcytes and astrocytes are overstimulated for prolonged periods, which vaccines are designed to bring about, this extended activation can be very destructive to the brain. Because of the critical dependence of the developing brain on a timed sequence of cytokine and excitatory amino acid fluctuation, according to Blaylock, sequential vaccinations can result in alterations of this critical process that will not only result in synaptic and dendritic loss, but abnormal (nerve) pathway development. When microglia are excessively activated by vaccines, especially chronically, they secrete a number of inflammatory cytokines, free radicals, lipid peroxidation products, and the two excitotoxins, glutamate and quinolenic acid, which may become highly destructive to the brain when these cells are excessively stimulated for prolonged periods. This process was suggested as the central mechanism resulting in the pathological as well as clinical features of autism [16]. Since the U.S. Congressional Hearings on issues of vaccine safety ended in December, 2004, credible and statistically significant studies have begun appearing that: a) meet the established criteria for effective safety tests and b) without exception in my opinion, have implicated vaccines as central causal factors in today’s epidemic of autism and related disorders. Several are listed below: • As published in the Annals of Neurology [17], Diana Vargas and colleagues examined the brains from autopsies of 11 autistic patients, ranging in ages from 5 to 44 years, in which they found the presence of extensively activated microglia and astrocytes along with elevations of cytokines and chemokines, which are immune system proteins involved in inflammatory processes. As the first study of its kind, it tends to support Blaylock’s theory that overstimulation of the brain’s microglia and astrocytes for excessively prolonged periods resulting from current vaccine programs plays a central causal role in today’s epidemic of childhood autism. include albumin, several forms of aluminum, formaldehyde, various amino acids, DNA residues, egg protein, gelatin, surfactants, monosodium glutamate(MSG), Thimerosal (50% ethyl mercury), and various antibiotics. • Surveys from four widely separated geographic areas have shown higher rates of asthma in fully vaccinated children as compared with those with limited or no vaccines [18-21]. • Contrary to public avowals as to the removal of mercury from vaccines, at time of this writing it is still present in the USA as a preservative in the multi-dose vials of tetanus-toxoid booster vaccines, the Menomune vaccine, the JE-Vax, and the inactivated influenza vaccines, including the “bird-flu” vaccine. Also it’s used in the manufacturing process of many vaccines to remove contaminants, which currently leaves trace residues of mercury in seven other vaccine formulations. Even these trace amounts are potentially toxic because of the universally recognized principle of toxicology, that combinations of toxins will increase toxicity exponentially; that is, two heavy metals will increase toxicity 10-fold, or three heavy metals increase toxicity 100-fold. In vaccines, the combinations would be mercury and aluminum. The same principle applies in other forms of toxic chemicals [26-28]. • A study on primary immunization of 239 premature infants with gestational ages of less that 35 weeks was conducted by M. Pourcyrous et al. (Journal of Pediatrics [22], to determine the incidence of cardiorespiratory events and abnormal C-reactive protein (CRP) levels associated with administration of a single vaccine or multiple vaccines simultaneously at or about two months age. (CRP is a standard blood test to measure body inflammation.) CRP levels and cardiorespiratory events were monitored for three days following immunizations in a neonatal intensive care unit sponsored by the University of Tennessee. Elevations of CRP levels occurred in 70% of infants administered single vaccines and in 85% of those given multiple vaccines, 43% of which reached abnormal levels. Overall, 16% of infants had vaccine-associated cardiorespiratory events with episodes of apnea (cessation of breathing) and bradycardia. Most important, 17% of those receiving single vaccines had intraventricular brain hemorrhages, with an incidence of 24% of those receiving multiple vaccines. (This is the first study of its kind, showing that brain hemorrhages can commonly take place in vulnerable infants, now being misdiagnosed as Shaken Baby Syndrome in hospital emergency rooms.) It should be noted that each and every one of the preceding adverse manifestations could be attributed to vaccine-induced brain inflammation. • Though long denied by health officials, the action of mercury in causing brain inflammation in autistic children tends to be confirmed by Sajdel, Sulkowska, et al. [23]. Also the first of its kind, this study compared the cerebellar levels of the oxidative stress marker, 3-nitrotyrosine (3-NT), mercury (Hg), and the antioxidant, selenium (Se) between autistic and normal children. Average cerebellar 3-NT levels were statistically elevated by 68% in autistic children, cerebellar Hg by 68%, and mercury levels relative to protective selenium by 75% in autistic cases in comparison to controls. • In a study along similar lines to the S. Sulkowska study above, X. Ming et al. [24] reviewed their animal model of autism, showing that oxidative stress from methylmercury or valproic acid exposures in early postnatal life of mice resulted in aberrant social, cognitive, and motor behavior. They also found that Trolox, a water-soluble vitamin E derivative, was capable of attenuating a number of these adverse neurobehavioral side effects. • A telephone survey commissioned by the nonprofit group, Generation Rescue, compared vaccinated with unvaccinated boys in nine counties of Oregon and California [25]. The survey included nearly 12,000 households with children ranging in age from 4 to 17 years, including more than 17,000 boys among whom 991 were described as being completely unvaccinated. The survey found that, compared to unvaccinated boys, vaccinated boys were 155% more likely to have a neurological disorder, 224% more likely to have ADHD, and 61% more likely to have autism. For older vaccinated boys in the 11-17 age bracket, the results were even more pronounced, with 158% more likely to have neurological disorders, 317% more likely to have ADHD, and 112% more likely to have autism. • In October, 1998 the French government abandoned its mandatory hepatitis B vaccine program for school children after more than 15,000 law suits were filed for brain damage and autoimmune reactions including arthritis, multiple sclerosis, and lupus. Vaccine adjuvants—their role in inducing prolonged immune response to vaccines and their potentially adverse consequences • As reviewed by Blaylock [16], adjuvants are substances added to vaccine formulations during manufacturing that are designed to boost the overall immune system response when the vaccine is injected. These substances • A study that was conducted in Lima, Peru by J. Laurente and colleagues [29] should remove all doubts about the potential dangers of mercury-containing thimerosal as a vaccine additive: To determine if thimerosal administration in amounts equivalent to vaccine content produces neurotoxic effects on the encephalon in postnatal hamsters and on the experimentation animals’ development, three serial thimerosal injections were given on birth days 7, 9, and 11, with controls receiving only saline injection. Test animals subsequently showed statistically significant reduction in both weight and stature compared with controls. Neurotoxic effects were also produced at encephalic (brain) level at the hippocampus, cerebral cortex, and cerebellum. On tissue slides there was decrease in neuronal density, neuronal necrosis, and axonal demyelinization in test animals. • In vaccines, virtually insoluble polymeric aluminum hydroxy compounds serve to dramatically boost and prolong the immune reaction to the vaccination by prolonged activation of the macrophagic immune sub-system in some people [30-35]. Ongoing mass (herd) immunizations – are they necessary? • Vaccine proponents would have us believe that mass vaccine programs have been largely responsible for controlling virtually all of the former epidemics of killer childhood diseases in industrialized nations, In my opinion, with the exception of small-pox and the possible exception of the polio vaccine, the facts do not bear this out. According to the Metropolitan Life Insurance Company, from 1911 to 1935 the four leading causes of child- hood deaths from infectious diseases in the USA were diphtheria, pertussis (whooping cough), scarlet fever, and measles. Yet, by 1945 the combined death rates from these causes had declined by 95%, before implementation of mass vaccine programs [39]. Other sources provided much the same pattern of information [40-41]. Furthermore, according to a report in Morbidity and Mortality Weekly Report, July 30, 1999, improvements in sanitation, water quality, hygiene, and the introduction of antibiotics have been the most important factors in control of infectious disease in the past century. Although vaccines were mentioned, they were not included among the major factors [42]. The MMR vaccine and childhood autism: a hypothetical model • As mentioned earlier, it was only after the combination of the measles, mumps, and rubella live viruses into a single vaccine in the USA in 1978 that the incidence of childhood autism showed a sharp and dramatic increase 1-2]. Prior to that time the three viral vaccines had been in use a number of years, but given separately without significant increases in autism. • In addition to the Blaylock model of microglial overstimulation, also undoubtedly playing a major role [16], there are two plausible explanations for increases in autism following the MMR vaccine: First, protein sequences in the measles virus have been found to have similarities to those in brain tissues [43], so that by process of mimicry, the formation of antibodies against the measles virus would tend to cross react adversely with the brain. Second, and probably far more important, viruses are inherently immunosuppressive, in contrast to bacterial infections which stimulate the immune system, as reflected in the fact that viral infections generally lower white blood counts in contrast to bacterial infections, which raise white counts. The measles virus is exceptionally potent in this regard, being powerfully suppressive to cellular immunity [44-46], with the suppressive action of measles largely attributed to its suppression of interleukin 12, on which cellular immunity is dependent [45]. Consequently the combining of three viral vaccines into a single combination may substantially increase the immunosuppressive vital effect, bringing about, in varying degrees, an immune paralysis in the infant. Under these circumstances the measles virus may spread into various tissues of the body. As with combinations of toxic chemicals that bring exponential increases in toxicities [26-28], combinations in viral vaccines may bring exponential increases in their toxic, immunosuppressive effects. • In support of this hypothesis, Wakefield et al. have demonstrated live measles virus in the small intestinal lymph nodes in children with the autistic-colitis syndrome, with the only possible source being from the live virus in the MMR vaccine [47]. • In his various lectures in this country, Wakefield stressed that it was only following the introduction of the MMR vaccine in the United Kingdom in 1987 that the rapid increase in childhood the colitis/autistic syndrome began to be seen. This pattern was further confirmed by checking back into the records of public health departments of the United Kingdom and finding reports of autism occurring among children contracting two such childhood diseases simultaneously, such as chicken pox and measles, or mumps and measles. • As reviewed by Blaylock [16], a number of studies have shown that live viruses used in vaccines can enter the brain and reside there for a lifetime. One study, in which autopsied tissues from the elderly were examined for the presence of the measles virus, found that 20% of brains had live measles virus and that 45% of other organs were infested as well [48]. • As another study suggesting that active brain invasion by the measles virus in autistic children from the MMR vaccination, Bradstreet et al. [49] examined cerebrospinal fluid from three autistic children, which revealed the presence of measles virus genomic RNA. • As to other viral vaccines, as reported by Bernard Rimland, the chicken pox vaccine is also playing a role in these cases. John B. Classen, M.D., and epidemiologic studies concerning a suspected causal relationship between vaccines and the rising incidence of Insulin-Dependent Diabetes mellitus (IDDM) • In 1998 John Classen, M.D. gave a presentation at a conference held by the American College of Medicine in which he reviewed 32 published articles, five authored by himself, indicating a causal relationship between vaccines and the rising incidence of IDDM. Nations represented in the papers included New Zealand, Canada, the United Kingdom, Denmark, Finland, Sweden, the U.S., and Holland. Single vaccines were used including haemophilus, hepatitis B, pertussis, BCG, and smallpox. • A prototype was one conducted in Finland by Classen and reported in the British Medical Journal [58]. In this study, from all children born in Finland between October 1, 1985 and August 31, 1987, approximately 116,000 were randomized as test subjects to receive four doses of haemophilus vaccine starting at three months of age, or one dose starting at 24 months. 125,500 unvaccinated children served as controls. Each group was followed until age 10 years for development of IDDM. The incidence at seven years for those receiving four doses, those receiving one dose, and those receiving none was 261, 237, and 207 respectively with relative risks of 1.2, 1.14, and 1 for those receiving no vaccine. • In virtually all of the reports from other countries the results were very similar, indicating a slight but consistent increase in IDDM following each of the single vaccines listed above. Classen interpreted these results as indicating that it was not the type of vaccination that mattered so much as the immunologic impact of vaccination itself. Typically there was a delay of 3 to 5 years between vaccines and onset of IDDM. Quotations by Classen during the 1998 conference included: “Vaccinating every child against every disease is fundamentally unsound.” “There is a 3.78-fold increased risk of insulin-dependent diabetes mellitus in children from today’s vaccines.” “All autoimmune diseases are increasing in incidence. General immune (over) stimulation from vaccines is a cause of autoimmunity.” Summary and conclusions • “The federal government’s Vaccine Adverse Event Reporting System (VAERS), which supposedly documents adverse reactions to vaccines, received nearly 10,000 reports involving the chickenpox vaccine between March, 1995 and December, 1999. Some of these reactions included brain inflammation, neurological damage, immune system abnormalities, seizures, and death. It is important to note, by the way, that since reporting adverse events is not mandatory, only an estimated 1 to 10% of adverse events are reported to VAERS.”[50] • In addition, articles by Gary Goldman seriously question the efficacy and advisability of universal varicella vaccination [51,52]. • Immunosuppressive effects have also been reported from the rubella vaccine. In a study of eighteen school girls, ages 11 to 13 years by Pukhalsky et al., profound depression of interferon gamma (a key mediator of cellular immunity) was found 30 days following rubella vaccine [53]. Returning to the MMR vaccine, F. Imani and K. Kehoe found a previously unrecognized side effect by incubating the MMR vaccine with a line of human plasma cells, which resulted in increase in the expression of allergy-related IgE antibodies, and secondarily a decrease in protective IgG antibodies. Based on these findings, the authors concluded that viral vaccines may be playing a role in the increasing incidence of asthma and other allergic diseases [54]. • Over eons of time nature has evolved two major branches of the immune system, the Th1 cellular system located in the mucous membranes of the gastrointestinal and respiratory systems, and the Th2 humoral system, which involves the production of antigen-specific antibodies by plasma cells in bone marrow. Both systems are incredibly complex both in the timing of their developments and their functions. Since a large majority of infectious microorganisms enter the body through the mucous membranes, the cellular immune system has evolved as the primary immune defense system of the body, with the humoral system serving as a secondary or backup role. For these reasons, evolutionary challenges have required the cellular immune system to become more effective in dealing with infectious micro-organisms, especially intracellular viral infections [57]. This is undoubtedly the reason that vaccine-induced immunities to measles, mumps, chicken pox, and rubella, which bypass the cellular immune system, are of limited duration requiring repeated vaccinations. The natural diseases of former times, in contrast, were dealt with much more effectively by the cellular immune system, almost always conferring permanent immunity. • The reader may well question that we have innumerable viruses passing around in the population today. Would they not serve the same purposes as measles, chicken pox, mumps, and rubella? Perhaps, except that chicken pox, mumps, rubella, and especially measles affect and challenge the epithelial tissues of the skin, respiratory (rubella), and gastrointestinal tracts (measles, chicken pox, and mumps) in ways that few if any other viruses do. • As reviewed above, a newborn infant comes into the world with a rudimentary immune system which requires a series of challenges to bring it to full functional capacity, a process requiring approximately three years. In earlier times these challenges were largely in the forms of the “minor childhood diseases” listed above. With time and experience it is becoming evident that, in addition to those already mentioned, another flaw in today’s vaccine programs is that the injectable vaccines, directed at stimulating antibody production in the bone marrow, are bypassing the cellular immune system, leaving it relatively unchallenged and therefore relatively weak and stunted during the critical infant/childhood period. In addition, there are the powerfully immunosuppressive effects of the MMR vaccine and other viral vaccines, to which the cellular immune system is uniquely vulnerable. These processes appear to be progressively undermining and eroding the cellular immune system, and unless discontinued or changed, may lead to an immunological collapses. Perhaps it already has for some children. • It is or should be manifestly apparent that the humoral antibody-producing system of the bone marrow can never functionally replace the far more efficient cellular immune system. • For this reason, in my opinion, any children’s vaccine program which does not allow the cellular (mucosal) immune system to develop unhampered in a natural way from natural challenges will be self-defeating. This would necessarily require a delay of childhood vaccines until two or three years of age. With this delay, the minor childhood viral diseases might well return, but would this be a bad thing? The dangers of chicken pox and mumps have been greatly exaggerated. Because of concerns for congenital rubella, the rubella vaccine could be delayed to later years, as the infection itself is very mild. Historically, measles did have some serious consequences including encephalitis, blindness or death in about 1 in 150 cases. However, there are other answers. Nutrition has been one of the missing links all along. In third world countries where measles has resulted in high mortality, this has usually been associated with malnutrition. One example of nutritional intervention is vitamin A therapy, authorized by the World Health Organization in developing nations, which has significantly reduced both mortality and morbidity from measles. • A study in Afghanistan which showed significantly greater morbidity and mortality from measles in children administered aspirin and Tylenol than those not given these medications [62], so that these should be avoided with measles. • Then too, we now have antibiotics for secondary infections associated with measles, which they did not have in the days when measles carried a small but significant rate of morbidities and mortality, much of which was from secondary infections. • All of the above lies in the future. For today’s parents the Autism Research Institute with headquarters in San Diego, California (www.AutismResearchInstitute.com) has made the following safety recommendations in childhood vaccines: • Never vaccinate a sick child, even if he or she just has a runny nose. • Never give more than two vaccines simultaneously. • Rather than the MMR vaccine, request that these viral vaccines be given separately, preferably six months apart; give measles last; and do not give any other vaccines for at least 1 year after measles. Some compounding pharmacies do provide these individual vaccines. • Administer vitamins A, D and C before and after vaccines. • Never allow a vaccine containing any level of the mercurial compound, Thimerosal. At time of this writing in late 2008, 50 micrograms of Thimerosal is still present in each 0.5- mL dose of vaccine from multi-dose vials of influenza vaccines and multi-dose vials of tetanus booster vaccines, but not in single dose vials of these vaccines. A total of 17 vaccines formulations are still approved and available for use that contain some level of Thimerosal; 10 of these 17 vaccine formulations contain a preservative level of Thimerosal. • Any overview on vaccines would be incomplete without mention of the work of the highly published immunologist, H. H. Fudenberg, and his work in developing clinical applications of transfer factor, which is a low molecular weight extract of lymphocytes, capable of enhancing or inducing cell-mediated immunity de novo (without immunizations) in an antigen specific fashion [63-64]. • Finally, in view of gross deficiencies of vaccine safety testings, as documented by the U.S. Congressional Hearings on issues of vaccine safety (1999-December, 2004), the time is long overdue for a total rethinking and redirecting of current childhood vaccine programs. Until the safety of such programs can be assured by thorough and dependable safety testing, any further mandating of childhood vaccines will remain morally and ethically untenable. http://www.know-vaccines.org/PDF/MMRmucosalIS.pdf Journal Of Infectious Disease • 2008 The Safety Profile of Varicella Vaccine: A 10-Year Review Susan A. Galea1, Ann Sweet1, Paul Beninger1, Sharon P. Steinberg2, Philip S. LaRussa2, Anne A. Gershon2 and Robert G. Sharrar1 1. Merck Research Laboratories, Clinical Risk Management and Safety Surveillance, North Wales, PA 2. Columbia University College of Physicians and Surgeons, New York, NY Abstract Excerpts Reports of breakthrough varicella There were 5054 reports of breakthrough varicella, for a reporting rate of 0.9 reports/ 10,000 doses of vaccine distributed. Fifty-one reports (1%) met the regulatory definition of “serious.” Secondary transmission The VZVIP confirmed 3 cases of secondary transmission of Oka VZV. The Oka VZV was present in a 30-year-old pregnant woman who developed 100 vesicular lesions 16 days after her 1-year-old son developed ∼30 vesicular lesions 24 days after varicella vaccination. She elected to have a therapeutic abortion, and the products of conception were negative for VZV by PCR analysis [5]. In the second report, the Oka VZV strain was also present in a 4-month-old boy who developed 25 lesions 19 days after his 1-year-old sibling developed 2 vesicular lesions 14 days after vaccination. The third case in which Oka VZV was identified occurred in a 35-year-old father who developed >100 lesions 17 days after his 1-year-old son developed 12 vesicular lesions 17 days after vaccination. In each of the 3 confirmed secondary-transmission cases, the vaccine recipient had a postvaccination rash and had close, household contact with the susceptible individual. Additionally, there were 2 reported cases of possible secondary transmission, in which it was reported that the presence of Oka VZV was identified by an outside laboratory [6, 7]. The specimens for these cases were not analyzed through or confirmed by the VZVIP. Neurologic AEs Neurologic syndromes, such as encephalitis, aseptic meningitis, and cerebellar ataxia, have been reported in the postmarketing environment after administration of Varivax. There were 30 (CSF) specimens analyzed by PCR (table 1) from patients with reports of such syndromes. The reported AEs associated with these reports included encephalitis (12 patients), meningitis (5 patients), ataxia (5 patients), transverse myelitis (3 patients), seizures (3 patients), demyelinating disorder (1 patient), and hemiparesis (1 patient). The 5 meningitis reports associated with HZ listed in the “HZ” subsection above are different from the cases of meningitis listed in this subsection and are not included here. None of the CSF specimens from these neurologic reports had Oka VZV identified by PCR analysis. Several of these reports have been described elsewhere [1, 4]. Herpes Zoster There were 697 reports of HZ occurring 1-3509 days (median, 362 days) after vaccination in patients 13 months to 68 years of age (median age, 3.4 years). Four hundred patients (65%) for whom age was reported were <5 years of age. Table 2 compares the HZ reports in which PCR analysis identified Oka VZV and wild-type VZV strains. The site of HZ was more likely to correlate with the site of vaccine injection in reports in which Oka VZV was identified. PCR was more likely to identify wild-type VZV than Oka VZV if the time to onset was within 42 days of vaccination. However, 2 reports in which HZ was diagnosed within 42 days of vaccination had specimens in which Oka VZV was identified. One of these reports was of a child with acute lymphocytic leukemia diagnosed 10 days after vaccination with Varivax. The child eventually developed HZ on 3 occasions: 23, 47, and 116 days after vaccination. PCR analysis of a specimen from the last episode of HZ identified Oka VZV. In the second report, Oka VZV was present in a girl 5 years of age who developed an HZ-like rash in the distribution of the second division of the trigeminal nerve (right side of face and right eye) 25 days after receiving Varivax. Five patients developed meningitis in association with HZ. Cerebrospinal fluid (CSF) specimens from these patients were negative for VZV. The HZ rash specimens from 2 of the patients had Oka VZV identified; however, in 1 of these reports, enterovirus was identified in the CSF analyzed at the Centers for Disease Control and Prevention (CDC). A third patient had wild-type VZV identified from an HZ rash specimen. Additionally, 1 child who received Varivax at 2-3 years of age had acute lymphocytic leukemia diagnosed at 4 years of age. After treatment with 6-mercaptopurine weekly and methotrexate monthly, he was hospitalized for HZ and mild meningeal signs. A CSF specimen had Oka VZV identified. The child recovered. Potential conflicts of interest S.A.G., A.S., P.B., and R.G.S. are salaried employees of Merck and possess stock and stock options in the company. A.A.G. lectures and consults on varicella-zoster virus vaccines for Merck and GlaxoSmithKline when invited and receives research support from Merck. A dditionally, P.S.L., S.P.S., and A.A.G. are in a contractual relationship with Merck through the Varicella Zoster Virus Identification Program. Full Report: http://jid.oxfordjournals.org/content/197/Supplement_2/S165.full Simpsonwood Retreat Center • June 7-8, 2000 Simpsonwood • Scientific Review of Vaccine Safety Datalink Information Norcross, Georgia Quotes from and link to transcript with a Discussion on the following page “…the number of dose related relationships [between mercury and autism] are linear and statistically significant. You can play with this all you want. They are linear. They are statistically significant.” —Dr. William Weil, American Academy of Pediatrics. Simpsonwood, GA, June 7, 2000 “Forgive this personal comment, but I got called out at eight o’clock for an emergency call and my daughter-inlaw delivered a son by c-section. Our first male in the line of the next generation and I do not want that grandson to get a Thimerosal containing vaccine until we know better what is going on. It will probably take a long time. In the meantime, and I know there are probably implications for this internationally, but in the meanwhile I think I want that grandson to only be given Thimerosal-free vaccines.” —Dr. Robert Johnson, Immunologist, University of Colorado, Simpsonwood, GA, June 7, 2000 “But there is now the point at which the research results have to be handled, and even if this committee decides that there is no association and that information gets out, the work has been done and through the freedom of information that will be taken by others and will be used in other ways beyond the control of this group. And I am very concerned about that as I suspect that it is already too late to do anything regardless of any professional body and what they say ... My mandate as I sit here in this group is to make sure at the end of the day that 100,000,000 are immunized with DTP, Hepatitis B and if possible Hib, this year, next year and for many years to come, and that will have to be with thimerosal containing vaccines unless a miracle occurs and an alternative is found quickly and is tried and found to be safe.” —Dr. John Clements, World Health Organization, Simpsonwood, GA, June 7, 2000 “We are in a bad position from the standpoint of defending any lawsuits, this will be a resource to our very busy plaintiff attorneys in this country.” —Dr. Robert Brent, a pediatrician at the Alfred I. duPont Hospital for Children in Delaware. “ “given the sensitivity of the information, we have been able to keep it out of the hands of, let’s say, less responsible hands.” —Dr. Bob Chen, head of vaccine safety for the CDC the study “should not have been done at all” the results “will be taken by others and will be used in ways beyond the control of this group. The research results have to be handled.” — Dr. John Clements, vaccines advisor at the World Health Organization Link to Simpsonwood Document: http://thinktwice.com/simpsonwood.pdf Medical Veritas • 2008 The truth behind the vaccine cover-up Russell L. Blaylock, MD www.russellblaylockmd.com Abstract On June 7-8, 2000 a secret conference was held at the Simpsonwood Conference Center in Norcross, Georgia to discuss a study examining the link between increasing doses of Thimerosal and neurodevelopmental disorders. The study was done using the Vaccine Safety Datalink (VSD) data-base, an official governmental data bank collecting patient vaccination information on the children from the health maintenance organizations (HMOs) being paid to participate. Attending were 51 scientists, representatives of pharmaceutical vaccine manufacturing companies and a representative of the World Health Organization; the public and the media were unlawfully excluded. The conclusions of this meeting were quite startling, since it confirmed a dose-response link between Thimerosal and neurodevelopmental disorders that held up to rigorous statistical analyses. In their discussion, they make plain why the meeting was held in secret: the conclusions would have destroyed the public’s confidence in the vaccine program, and more importantly, their faith in vaccine authorities. When the results of this study were published three years later in the journal Pediatrics, the “problem” had been fixed, in that by adding another set of data from a third HMO, reorganizing the criteria for inclusion and restructuring the patient groupings, a less than statistically significant link was demonstrated. In my analysis I discuss the more outrageous statements made during the meeting and how accepted experts in the field of mercury neurotoxicity were excluded from the meeting. I was asked to write a paper on some of the newer mechanisms of vaccine damage to the nervous system, but in the interim I came across an incredible document that should blow the lid off the cover-up being engineered by the pharmaceutical companies in conjunction with powerful governmental agencies. It all started when a friend of mine sent me a copy of a letter from Congressman David Weldon, M.D. to the director of the CDC, Dr Julie L. Gerberding, in which Congressman Weldon alludes to a study by a Doctor Thomas Verstraeten, then representing the CDC, on the connection between infant exposure to Thimerosal-containing vaccines and neurodevelopmental injury. In this shocking letter, Congressman Weldon refers to Dr. Verstraeten’s study, which looked at the data from the Vaccine Safety Datalink and found a statistically significant correlation between Thimerosal exposure via vaccines and several neurodevelopmental disorders including tics, speech and language delays, and possibly ADD. Congressman Weldon questions the CDC director as to why, following this meeting, Dr. Verstraeten published his results almost four years later in the journal Pediatrics to show just the opposite, that is, that except for tics, there was no statistically significant correlation to any neurodevelopmental problems related to Thimerosal exposure in infants. In this letter, Congressman Weldon refers to a report of the minutes of this meeting held in 2000, which exposes some incredible statements by the “experts” making up this study group. The group’s purpose was to evaluate and discuss Dr. Verstraeten’s interim results and data and make recommendations that would eventually lead to possible alterations in existing vaccine policy. I contacted Congressman Weldon’s legislative assistant and he kindly sent me a complete copy of this report. Now, as usual in these cases, the government did not give up this report willingly; it required a Freedom of Information Act lawsuit to pry it loose. Having read the report twice and having carefully analyzed it, I can see why they did not want any outsiders to see it. It is a bombshell, as you shall see. To help the reader understand the importance of this report, in this analysis I will not only describe and discuss this report, but also will frequently quote their words directly and supply the exact page number so others can see for themselves. The official title of the meeting was the “Scientific Review of Vaccine Safety Datalink Information.” This conference, held on June 7-8, 2000, at Simpsonwood Retreat Center in Norcross, Georgia, assembled 51 scientists and physicians, five of whom represented vaccine manufacturers. These included Smith Kline Beecham, Merck, Wyeth, North American Vaccine and Aventis Pasteur. During this conference, these scientists focused on the study of the Datalink material, whose main author was Dr. Thomas Verstraesten and who identified himself as working at the National Immunization Program of the CDC. It was discovered by Congressman Weldon that Dr. Verstraeten left the CDC shortly after this conference to work for the Belgian operations of the pharmaceutical maker GlaxoSmithKline—a recurring regulated agency/regulated-industry pattern that has been given the name “a revolving door”. It is also interesting to note that GlaxoSmithKline was involved in several lawsuits over complications secondary to their vaccines. To start off the meeting, Dr. Roger Bernier, Associate Director for Science in the National Immunization Program (CDC), related some pertinent history. He stated that Congressional action in 1997 required that the FDA review mercury being used in drugs and biologics (vaccines). To meet this mandate, the FDA called for all the registered manufacturers of drugs, including vaccines, to submit the mercury information about their drug products. He notes that a group of European regulators and manufacturers met on April 1999 and acknowledged the situation but made no recommendations or changes. In other words, it was all for show. At this point Dr. Bernier makes an incredible statement (page 12). He says, “In the United States there was a growing recognition that cumulative exposure may exceed some of the guidelines.” By guidelines, he is referring to guidelines for mercury exposure safety levels set by several regulatory agencies. The three guidelines were set by the ATSDR (The Agency for Toxic Substances and Disease Registry), the FDA (Food and Drug Administration), and the EPA (Environmental Protection Agency). The most consistently violated safety guideline was the mercury-in-food limit set by the EPA. He further explains that he is referring to children being exposed to Thimerosal in vaccines. Based on this realization that they were violating safety guidelines, he says that this then “resulted in a joint statement of the Public Health Service (PHS) and the American Academy of Pediatrics (AAP) in July of last year (1999), which stated that as a long term goal, it was desirable to remove mercury from vaccines because it was a potentially preventable source of exposure.” (Page 12) As an aside, one has to wonder, where was the Public Health Service and American Academy of Pediatrics during all the years of mercury use in vaccines and why didn’t they know that, number one, they were exceeding regulatory safety levels and secondly, why weren’t they aware of the extensive literature showing deleterious effects on the developing nervous system of babies? As we shall see, even these “experts” seem to be cloudy on the mercury literature. Dr. Bernier notes that in August 1999 a public workshop was held in the Lister Auditorium in Bethesda by the National Vaccine Advisory Group and the Interagency Working Group on Vaccines to consider Thimerosal risk in vaccine use. And based on what was discussed in that conference, Merck, one manufacturer of a U.S.-licensed hepatitis B vaccine (HepB) moved to license a “no Thimerosal” formulation for young children but kept making and distributing its Thimerosal-preserved HepB formulation into the mid 2000s while GlaxoS- mithKline, the other U.S.-licensed HepB maker apparently moved to license a reduced-Thimerosal formulation; apparently, neither firm moved to recall the existing Thimerosal-preserved doses. It is interesting to note that the media took very little interest in what was learned at that meeting and it may have been a secret meeting—probably because it was also a meeting that was not, as required by law, announced publicly. As we shall see, there is a reason why they struggle to keep the contents of all these meetings secret from the public. Dr. Bernier then notes on page 13 that on October 1999 the Advisory Committee on Immunization Practices (ACIP) “looked this situation over again and did not express a preference for any of the vaccines that were Thimerosal free.” In this discussion he further notes that the ACIP concluded that the Thimerosal-containing vaccines could be used but the “long-term goal” is to try to remove Thimerosal as soon as possible. Now, we need to stop and think about what has transpired. We have an important group here, the ACIP that essentially plays a role in vaccine policy affecting tens of millions of children every year. And, we have evidence from the Thimerosal meeting in 1999 that the potential for serious injury to the infant’s brain is so serious that a recommendation for removal becomes policy. In addition, they are all fully aware that tiny babies are receiving mercury doses that exceed even EPA safety limits for adults, yet all they can say is that we must “try to remove Thimerosal as soon as possible.” Do they not worry about the tens of millions of babies who will continue receiving Thimerosal-containing vaccines until they can get around to stopping the use of Thimerosal? It should also be noted that it is a misnomer to say “removal of Thimerosal” since they are not removing anything. They just plan to stop adding it to future vaccines once they use up existing stocks, which entails millions of doses. And incredibly, the government allows them to do it. Even more incredibly, the American Academy of Pediatrics and the American Academy of Family Practice similarly endorse this insane policy. In fact, they specifically state that children should continue to receive the Thimerosal-containing vaccines until new Thimerosal-free vaccines can be manufactured at the will of the manufacturers. It was disclosed that Thimerosal was in all influenza, HepB and DPT vaccines, as well as most DtaP vaccines . Had vaccine safety been their primary concern, as it should be, the most obvious solution was to recommend only single-dose vials, which require no preservative, coupled with a ban on the use of any mercury compound in the manufacture of all drugs. So, why didn’t they make this or at least a “no Thimerosal” recommendation? “Oh,” they exclaim, “it would add to the cost of the vaccine.” Of course, we are only talking about a few dollars per vaccine at most, certainly worth the health of your child’s brain and future. They could use some of the hundreds of millions of dollars they waste on vaccine promotion every year to cover the cost for the poor. Yet, that would cut into some fat-cat’s profit and we can’t have that. As they begin to concentrate on the problem at hand we first begin to learn that the greatest problem with the meeting is that they know virtually nothing about what they are doing. On page 15, for example, they admit that there is very little pharmacokinetic data on ethylmercury, the form of mercury in Thimerosal. In fact, they say there is no data on excretion and the data on toxicity is sparse; yet it is recognized to cause hypersensitivity, neurological problems, and even death, and it is known to easily pass the blood-brain barrier and the placental barrier. Therefore, what they are admitting is that we have a form of mercury that has been used in vaccines since the 1930s and no one has bothered to study the effects on biological systems, especially the brains of infants. Their defense throughout this conference is “we just don’t know the effects of ethylmercury.” As a solution, they resort to studies on methylmercury because there are thousands of studies on this form of mercury. The major source of this form is seafood consumption. It takes them awhile to get the two forms of mercury straight, since for several pages of the report they say methylmercury is in Thimerosal rather than ethylmercury. They can be forgiven for this. On page 16, Dr. Johnson, an immunologist and pediatrician at the University of Colorado School of Medicine and the National Jewish Center for Immunology and Respiratory Medicine, notes that he would like to see the incorporation of wide margins of safety, that is 3 to 10-fold margins of safety to “account for data uncertainties.” What he means is that there are so many things we do not know about this toxin that we had better use very wide margins of safety. For most substances the FDA uses a 100-fold margin of safety. The reason for this, which they do not mention, is that in a society of hundreds of millions of people, there are groups of people who are much more sensitive to the toxin than others. For instance, the elderly, the chronically ill, the nutritionally deficient, small babies, premature babies, those on certain medications and those with inborn defects in detoxification, just to name a few. In fact, premature babies and low birth weight babies were excluded from the main study since (1) some had the highest mercury levels, (2) these would be hard to study, and (3) they had the most developmental problems possibly related to the mercury. In other words, including these babies might endanger their claims of safety. It should also be noted that all participants at this conference ignored the differences in total mercury exposure among infants and small children living in different geographical areas. For example, a child’s mother who had dental amalgams, who regularly eats high-methymercury-containing seafood and lives in an area with high atmospheric mercury levels will have much higher total mercury exposure than one exposed to little dietary, dental, and environmental mercury. Also on page 16, Dr. Johnson makes an incredible statement, one that defines the problem we have in this country with the promoters of these vaccines. He states, “As an aside, we found a cultural difference between vaccinologist and environmental health people in that many of us in the vaccine arena have never thought about uncertainty factors before. We tend to be relatively concrete in our thinking.” Then he says, “One of the big cultural events in that meeting ... was when Dr. Clarkson repetitively pointed out to us that we just didn’t get it about uncertainty, and he was actually quite right.” This is an incredible admission. First, what is a “vaccinologist”? Do you go to school to learn to be one? How many years of residency training are required to be a “vaccinologist”? Are there board exams? It’s an ill-defined term used to describe people who are obsessed with vaccines, not that they actually study the effects of the vaccines, as we shall see throughout this meeting. Most important is the admission by Dr. Johnson that he and his fellow “vaccinologists” are so blinded by their obsession with forcing vaccines on society that they never even considered that there might be factors involved that could greatly affect human health, the so-called “uncertainties”. Further, he admits that he and his fellow “vaccinologists” like to think in concrete terms; that is, they are very narrow in their thinking and wear blinders that prevent them from seeing the numerous problems occurring with large numbers of vaccinations in infants and children. Their goal in life is to vaccinate as many people as possible with an ever-growing number of vaccines. On page 17 his “concrete thinking” once again takes over. He refers to the Bethesda meeting on Thimerosal safety issues and says, “there was no evidence of a problem, only a theoretical concern that young infants’ developing brains were being exposed to an organomercurial.” Of course, as I shall point out later, it is a lot more than a “theoretical concern”. He then continues by saying, “We agree that while there was no evidence of a problem, the increasing number of vaccine injections given to infants, was increasing the theoretical mercury exposure risk.” It’s hard to conceive of a true scientist not seeing the incredible irony of these statements. The medical literature abounds with studies on the deleterious effects of mercury on numerous enzymes, mitochondrial energy production, synaptic function, dendritic function, neurotubule dissolution and excitotoxicity—yet he sees only a “theoretical risk” associated with an ever increasing addition of Thimerosal-containing vaccines. It is also important to note that these geniuses never even saw a problem in the first place, it was pressure from outside scientists, parents of affected children, and groups representing them that pointed out the problem. They were, in essence, reacting to pressure from outside the “vaccinologist club” and, therefore, had not discovered internally that a problem even “might” exist. In fact, if these outside groups had not become involved, these “vaccinologists” would have continued to add more and more mercury-containing vaccines to the list of required vaccines. Only when the problem became so obvious, that is of epidemic proportion and the legal profession became involved, would they have even noticed there was a problem. This is a recurring theme in the government’s regulatory agencies, as witnessed with fluoride, aspartame, MSG, dioxin and pesticides issues. In fact, this statement is not based on any risk to U.S. children at all and he makes that plain when he states, “that the potential impact on countries that have 10% to 15% newborn hepatitis B exposure risk was very distressing to consider.” (page 18) In other words the risk is not to normal U.S. children but to children in developing countries. In fact, hepatitis B is not a risk until the teenage years and after in this country. The only at-risk children are those born to drug abusing parents, to mothers infected with hepatitis B, or to HIV infected parents. It is also interesting that Dr. Johnson did admit that the greatest risk was among low birth weight infants and premature infants. Now why would that be if there existed such a large margin of safety with mercury used in vaccines? Could just a few pounds of body weight make such a dramatic difference? In fact, it does, but it also means that normal birth weight children, especially those near the low range of normal birth weight, are also in greater danger. It also would mean that children receiving doses of mercury higher than the 75 ug in this study would be at high risk as well because their dose, based on body weight, would be comparable to that of the low birth weight child receiving the lower dose. This is never even considered by these “vaccinologist” experts who decide policy for your children. Infectious disease authorities know that 90% of people infected with this virus either have a mild infection and recover or have no symptoms at all. Even pregnant women infected with the virus have only a 20% chance of transmitting the virus to their babies. According to statistics, the United States has one of the lowest rates of hepatitis B infection in the world, with only 53 cases of the infection being reported in children among 3.9 million births. In fact, there were three times as many serious complications from the vaccine as there were children who contracted the disease. The real reason for vaccinating the newborns is to capture them before they can escape the vaccinologists’ vaccine program. Now this next statement should shock everyone, but especially the poor who might believe that these “vaccinologist” experts have their best interest in mind. Dr. Johnson says on page 17, “We agree that it would be desirable to remove mercury from U.S. licensed vaccines, but we did not agree that this was a universal recommendation that we would make because of the issue concerning preservatives for delivering vaccines to other countries, particularly developing countries, in the absence of hard data that implied that there was in fact a problem.” So, here you have it. The data is convincing enough that the American Academy of Pediatrics and the American Academy of Family Practice, as well as the regulatory agencies and the CDC, all recommend its removal as quickly as possible because of concerns of adverse effects of mercury on brain development, but not for the children in the developing countries. I thought the whole idea of child health programs in the United States directed toward the developing world was to give poor children a better chance in an increasingly competitive world. This policy being advocated would increase the neurodevelopmental problems seen in poor children of developing countries and of this country, impairing their ability to learn and develop competitive minds. Remember, there was a representative of the World Health Organization (WHO), Dr. John Clements, serving on this panel of “experts” who apparently never challenged this statement made by Dr. Johnson. It also needs to be appreciated that children in developing countries are at a much greater risk of complications from vaccinations and from mercury toxicity than children in developed countries. This is because of poor nutrition, concomitant parasitic and bacterial infections, and a high incidence of low birth weight in these children. We are now witnessing a disaster in African countries caused by the use of older live virus polio vaccines that has now produced an epidemic of vaccine related polio, that is, polio caused by the vaccine itself. In, fact, in some African countries, polio was not seen until the vaccine was introduced. The WHO and the “vaccinologist experts” from this country now justify a continued polio vaccination program with this dangerous vaccine on the basis that now that they have created the epidemic of polio, they cannot stop the program. In a recent article it was pointed out that this is the most deranged reasoning, since more vaccines will mean more vaccine-related cases of polio. But then, “vaccinologists” have difficulty with these “uncertainties”. (Jacob JT. A developing country perspective on vaccine-associated paralytic poliomyelitis. Bulletin WHO 2004; 82:53-58. See commentary by D.M. Salisbury at the end of the article.) Then Dr. Johnson again emphasizes the philosophy that the health of children is secondary to “the program” when he says, “We saw some compelling data that delaying the birth dose of HepB vaccine would lead to significant disease burden as a consequence of missed opportunity to immunize.” This implies that our children would be endangered from the risk of hepatitis B should the vaccine program stop vaccinating newborns with the HepB vaccine. This is a tactic often used to scare mothers into having their children vaccinated. For example, vaccinologists say that if children are not vaccinated against measles, millions of children could die during a measles epidemic. They know this is nonsense. What they are using are examples taken from developing countries with poor nutrition and poor immune function in which such epidemic death can occur. In the United States we would not see this because of better nutrition, better health facilities and better sanitation. In fact, most deaths seen during measles outbreaks in the United States occur in children in whom vaccination was contraindicated, when the vaccine did not work or in children with chronic, immune-suppressing diseases. In fact, most studies show that children catching the measles or other childhood diseases have been either fully immunized or partially immunized. The big secret among “vaccinologists” is that anywhere from 20 to 50% of children are not resistant to the diseases for which they have been vaccinated. Also on page 18, Dr. Johnson tells the committee that it was Dr. Walter Orenstein who “asked the most provocative question which introduced a great deal of discussion. That was, should we try to seek neurodevelopmental outcomes from children exposed to varying doses of mercury by utilizing the Vaccine Safety Datalink data from one or more sites.” (page 18) I take from this no one had ever even thought of looking at the data that had just been sitting there all these years unreviewed. Children could have been dropping like flies or suffering from terrible neurodevelopmental defects caused by the vaccine program and no one in the government would have known. In fact, that is exactly what the data suggested was happening, at least as regards neurodevelopmental delays. We should also appreciate that the government sponsored two conferences on the possible role of metals, aluminum and mercury, being use in vaccines, without any change in vaccine policy occurring after the meetings. These meetings were held a year before this year’s 2000 meeting and before any examination of the data which was being held tightly by the CDC (which was denied to other independent, highly qualified researchers). I will talk more about what was discussed in the aluminum conference later. It is very important and is only briefly referred to in this conference for a very good reason. If the public knew what was discussed at the aluminum meeting no one would ever get a vaccination using the presently manufactured types of vaccines again. Despite what was discussed in the aluminum meeting and the scientific literature on the neurotoxicity of aluminum, Dr. Johnson makes the following remark; “Aluminum salts have a very wide margin of safety. Aluminum and mercury are often simultaneously administered to infants, both at the same site and at different sites.” Also on page 20, he states, “However, we also learned that there is absolutely no data, including animal data, about the potential for synergy, additively or antagonism, all of which can occur in binary metal mixtures...” It is important here to appreciate a frequently used deception by those who are trying to defend an indefensible practice. They use the very same language just quoted, that is, that there is no data to show, etc., etc. They intend it to convey the idea that the issue has been looked at and studied thoroughly and no toxicity was found. In truth, it means that no one has looked at this possibility and there have been no studies that would give us an answer one way or the other. In fact, we know that aluminum is a significant neurotoxin and that it shares many common mechanisms with mercury as a neurotoxin. For example, they are both toxic to neuronal neurotubules, interfere with antioxidant enzymes, poison DNA repair enzymes, interfere with mitochondrial energy production, block the glutamate reuptake proteins (GLT-1 and GLAST), bind to DNA and interfere with neuronal membrane function. Toxins that share toxic mechanisms are almost always additive and frequently synergistic in their toxicity. So, Dr. Johnson’s statement is sheer nonsense. A significant number of studies have shown that both of these metals play a significant role in all of the neurodegenerative disorders. It is also important to remember, both of these metals accumulate in the brain and spinal cord. This makes them accumulative toxins and therefore much more dangerous than rapidly excreted toxins. To jump ahead, on page 23 Dr. Tom Sinks, Associate Director for Science at the National Center for Environmental Health at the CDC and the Acting Division Director for Division of Birth Defects, Developmental Disabilities and Health, asks, “I wonder is there a particular health outcome that is related to aluminum salts that may have anything that we are looking at today?” Dr. Martin Meyers, Acting Director of the National Vaccine Program Office, answers, “No, I don’t believe there are any particular health concerns that were raised.” This is after an aluminum conference held the previous year that did, indeed, find significant health concerns and extensive scientific literature showing aluminum to be of great concern. On page 24 Dr. William Weil, a pediatrician representing the Committee on Environmental Health of the American Academy of Pediatrics, brings some sense to the discussion by reminding them that, “there are just a host of neurodevelopmental data that would suggest that we’ve got a serious problem. The earlier we go, the more serious the problem.” Here he means that the further back you go during the child’s brain development, the more likely the damage to the infant. I must give him credit; at least he briefly recognized that a significant amount of brain development does take place later—that is after birth. He also reminds his colleagues that aluminum produced severe dementia and death in dialysis cases. He concludes by saying, “To think there isn’t some possible problem here is unreal.” (page 25) Not to let it end there, Dr. Meyers adds, “We held the aluminum meeting in conjunction with the metal ions in biology and medicine meeting, we were quick to point out that in the absence of data we didn’t know about additive or inhibitory activities.” Once again we see the “no data” ploy. There is abundant data on the deleterious effects of aluminum on the brain, a significant portion of which came out in that very meeting. Dr. Johnson also quotes Dr. Thomas Clarkson, who identifies himself as associated with the mercury program at the University of Rochester, as saying that delaying the HepB vaccine for 6 months or so would not affect the mercury burden (page 20). He makes the correct conclusion when he says, “I would have thought that the difference was in the timing. That is you are protecting the first six months of the developing central nervous system.” Hallelujah, for a brief moment I thought that they had stumbled on one of the most basic concepts in neurotoxicology. Then Dr. Meyers dashed my hopes by saying that single, separated doses would not affect blood levels at all. At this juncture, we need a little enlightenment. It is important to appreciate that mercury is a fat soluble metal. That is, it is stored in the body’s fat. The brain contains 60% fat and therefore is a common site for mercury storage. Now, they establish in this discussion that about half of methylmercury is excreted over several months when ingested. A recent study found that ethylmercury has a half-life of 7 days. A significant proportion of the mercury will enter the brain (it has been shown to easily pass through the bloodbrain barrier) where it is stored in the phospholipids (fats). It should also be appreciated that when cleared from the blood, the ethylmercury enters the bowel, where it is re-circulated many times over—each time depositing more mercury in the child’s brain. With each new vaccine dose, and remember, at the time of this conference, these children were receiving as many as 36 doses of these vaccines by age 2 years, many of which contained mercury—another increment of mercury is added to the brain storage depot. This is why we call mercury an accumulative poison. They never once, not once, mention this vital fact throughout the entire conference. Not once. Moreover, they do so for a good reason; it gives the unwary, those not trained in neuroscience, assurance that all that matters here is blood levels. In fact, on page 163, Dr. Robert Brent, a developmental biologist and pediatrician at Thomas Jefferson University and Dupont Hospital for Children, says that we don’t have data showing accumulation and “that with the multiple exposures you get an increasing level, and we don’t know whether that is true or not.” He redeems himself somewhat by pointing out that some of the damage is irreversible and with each dose more irreversible damage occurs and in that way it is accumulative. On page 21 Dr. Thomas Clarkson makes the incredible statement implying that he knows of no studies that show exposure to mercury after birth or at six months would have deleterious effects. Dr. Isabelle Rapin, a neurologist for children at Albert Einstein College of Medicine, follows up by saying that “I am not an expert on mercury in infancy” but she knows it can affect the nerves (peripheral nervous system). So, here is one of our experts admitting that she knows little about the effects of mercury on the infant. My question is: Why is she here? Dr. Rapin is a neurologist for children at Albert Einstein College of Medicine who stated that she has a keen interest in developmental disorders, in particular those involving language and autism, yet she knows little about the effects of mercury on the infant brain. This conference is concerned with the effects of mercury in the form of Thimerosal on infant brain development, yet throughout this conference our experts, especially the “vaccinologists”, seem to know little about mercury except limited literature that shows no toxic effects except at very high levels. None of the well known experts were invited, such as Dr. Michael Aschner from Bowman Grey School of Medicine or Dr. Boyd Haley, who has done extensive work on the toxic effects of low concentrations of mercury on the CNS (Central Nervous System). They were not invited because they would be harmful to the true objective of this meeting, and that was to exonerate mercury in vaccines. Several times throughout this conference, Dr. Brent reminds everyone that the most sensitive period for the developing brain is during the early stages of pregnancy. In fact, he pinpoints the 8th to 18th week as the period of neuromaturation. In fact, the most rapid period of brain maturation, synaptic development and brain pathway development, is during the last three months of pregnancy continuing until two years after birth. This is often referred to as the “brain growth spurt”. This is also not mentioned once in this conference, again because if mothers knew that their child’s brain was busy developing for up to two years after birth, they would be less likely to accept this safety of mercury nonsense these “vaccinologists” proclaim. The brain develops over 100 trillion synaptic connections and tens of trillions of dendritic connections during this highly sensitive period. Both dendrites and synapses are very sensitive, even to very low doses of mercury and other toxins. It has also been shown that subtoxic doses of mercury can block the glutamate transport proteins that play such a vital role in protecting the brain against excitotoxicity. Compelling studies indicate that damage to this protective system plays a major role in most of the neurodegenerative diseases and abnormal brain development as well. Recent studies have shown that glutamate accumulates in the brains of autistic children, yet these experts seem to be unconcerned about a substance (mercury) that is very powerful in triggering brain excitotoxicity. It is also interesting to see how many times Dr. Brent emphasizes that we do not know the threshold for mercury toxicity for the developing brain. Again, that is not true. We do know and the Journal of Neurotoxicology states that anything above 10μg (micrograms) is neurotoxic. The WHO in fact states that there is no safe level of mercury. On page 164 Dr. Robert Davis, Associate Professor of Pediatrics and Epidemiology at the University of Washington, makes a very important observation. He points out that in a population like the United States you have individuals with varying levels of mercury from other causes (diet, living near coal-burning facilities, etc.) and by vaccinating everyone you raise those with the highest levels even higher and bring those with median levels into a category of higher levels. The “vaccinologists” with their problem of “concrete thinking” cannot seem to appreciate the fact that not everyone is the same. That is, they fail to see these “uncertainties”. To further emphasize this point, let’s consider a farming family that lives within three miles of a coal-burning electrical plant. Since they also live near the ocean they eat seafood daily. The fertilizers, pesticides and herbicides used on the crops contain appreciable levels of mercury. The coal-burning electrical plant emits high levels of mercury in the air they breathe daily and the seafood they consume has levels of mercury higher than EPA safety standards. This means that any babies born to these people will have very high mercury levels. Once born, they are given numerous vaccines containing even more mercury, thereby adding significantly to their already high mercury burden. Are these “vaccinologists” trying to convince us that these children don’t matter and that they are to be sacrificed at the alter of “vaccine policy”? Recent studies by neurotoxicologists have observed that as our ability to detect subtle toxic effects improves, especially on behavior and other neurological functions, we lower the level of acceptable exposure. In fact, Dr. Sinks brings up that exact point, using lead as an example. He notes that as our neurobehavioral testing improved, we lowered the acceptable dose considerably and continue to do so. Dr. Johnson had the audacity to add, “The smarter we get, the lower the threshold.” Yet, neither he, nor the other participants seem to be getting any smarter concerning this issue. Dr. Robert Chen, Chief of Vaccine Safety and Development at the National Immunization Program at the CDC, then reveals why they refuse to act on this issue. He says, “the issue is that it is impossible, unethical to leave kids unimmunized, so you will never, ever resolve that issue. So then we have to refer back from that.” (page 169) In essence, immunization of the kids takes precedence over safety concerns with the vaccines. If the problem of vaccine toxicity cannot be solved, he seems to be saying, then we must accept that some kids will be harmed by the vaccines. In fact, we are now seeing that the harm from the vaccines exceeds the benefit of disease prevention. Dr. Brent makes the statement that he knows of no known genetic susceptibility data on mercury and therefore assumes there is a fixed threshold of toxicity. That is, that everyone is susceptible to the same dose of mercury and there are no genetically hypersensitive groups of people. In fact, a recent study found just such a genetic susceptibility in mice. In this study researchers found that mice susceptible to autoimmunity developed neurotoxic effects to their hippocampus, including excitotoxicity, not seen in other strains of mice. They even hypothesize that the same may be true in humans, since familial autoimmunity increases the likelihood of autism in offspring. (Hornig M, Chian D, Lipkin WI. Neurotoxic effects of postnatal Thimerosal are mouse strain dependent. Mol Psychiatry 2004 Sep.;9(9):833–45). For the next quotation you need a little discussion to be able to appreciate the meaning. They are discussing the fact that in Dr. Verstraeten’s study frightening correlations were found between the higher doses of Thimerosal and problems with neurodevelopment, including ADD and autism. The problem with the study was that there were so few children that had been administered Thimerosal-free vaccines, that a true control group could not be used. Instead they had to use children getting 12.5μg of mercury as the control and some even wanted to use the control dose as 37.5μg. So the controls had mercury levels that could indeed cause neurodevelopmental problems. Even with this basic flaw, a strong positive correlation was found between the dose of mercury given and these neurodevelopmental problems. It was proposed that a group of children receiving non-Thimerosal vaccines be compared to those who had Thimerosal. In fact, we later learn that a large group of children could have been used as a Thimerosal-free control. It seems that for two years before this conference, the Bethesda Naval Hospital had been using unlicensed reducedThimerosal vaccines in place of the U.S.-licensed Thimerosal-preserved vaccines to immunize their outpatient children. Unfortunately, in general, these children were too young for the symptoms of neurodevelopmental-regressive autism to be manifest when Verstraten began his studies in the late 1990s. So, now to the quote: Dr. Braun responds to the idea of starting a new study using such Thimerosal-free controls by saying, “Sure we will have the answer in five years. The question is what can we do now with the data we have?” (page 170) Well, we have the answer to that, they simply covered this study up, declared that Thimerosal is of no concern and continued the unaltered policy. That is, they can suggest that the pharmaceutical manufacturers of vaccines remove the Thimerosal but not make it mandatory or examine the vaccines to make sure they have removed it. Let us take a small peek at just how much we can trust the pharmaceutical manufacturers to do the right thing. Several reports of major violations of vaccine manufacturing policy have been cited by the regulatory agencies. This includes obtaining plasma donations without taking adequate histories on donors as to disease exposures and previous health problems, poor record keeping on these donors, improper procedures, and improper handing of specimens. That these are not minor violations is emphasized by the discovery that a woman with variant Mad Cow Disease was allowed to give plasma to be used in vaccines in England. In fact, it was learned only after the contaminated plasma was pooled and used to make millions of doses of vaccines that her disease was discovered. British health officials told the millions of vaccinated not to worry, since the “experts” have no idea if it will really spread the disease. Contamination of vaccines is a major concern in this country as well, as these regulatory violations make plain. It is also important to note that no fines were given, just warnings. Conclusions by the study group At the end of the conference, a poll was taken asking two questions. One was, Do you think that there is sufficient data to make a causal connection between the use of Thimerosal-containing vaccines and neurodevelopmental delays? Second, do you think further study is called for based on this study? First, let us see some of the comments on the question of doing further studies. Dr. Paul Stehr-Green, Associate Professor of Epidemiology at the University of Washington School of Public Health and Community Medicine, who voted yes, gave as his reason, “The implications are so profound these should be examined further.” (page 180) Meanwhile, Dr. Brent interjects his concern that the lawyers will get hold of this information and begin filing lawsuits. He says, “They want business and this could potentially be a lot of business.” (page 191) Dr. Loren Koller, Pathologist and Immunotoxicologist at the College of Veterinary Medicine, Oregon State University, is to be congratulated for recognizing more is involved in the vaccine effects than just ethylmercury (page 192). He mentions aluminum and even the viral agents beings used as other possibilities. This is especially important in the face of Dr. R. K. Gherardi’s identification of macrophagic myofascitis, a condition causing profound weakness and multiple neurological syndromes, one of which closely resembled multiple sclerosis. Both human studies and animal studies have shown a strong causal relationship to the aluminum hydroxide or aluminum phosphate used as vaccine adjuvants. More than 200 cases have been identified [1000s across the globe since this report was written] in European countries and the United States and have been described as an “emerging condition”. Here are some of the neurological problems seen with the use of aluminum hydroxide and aluminum phosphate in vaccines. In two children aged 3 and 5 years, doctors at the All Children’s Hospital in St. Petersburg, Florida described chronic intestinal pseudo-obstruction, urinary retention, and other findings indicative of a generalized loss of autonomic nervous system function (diffuse dysautonomia). The 3-year old had developmental delay and hypotonia (loss of muscle tone). A biopsy of the children’s vaccine injection site disclosed elevated aluminum levels. In a study of some 92 patients suffering from this emerging syndrome, eight developed a full-blown demyelinating Central Nervous System disorder (i.e., multiple sclerosis) [Authier FJ, Cherin P, et al. Central nervous system disease in patients with macrophagic myofasciitis. Brain 2001;124:974–83]. This included sensory and motor symptoms, visual loss, bladder dysfunction, cerebellar signs (loss of balance and coordination) and cognitive (thinking) and behavioral disorders. Dr. Gherardi, the French physician who first described the condition in 1998, has collected over 200 proven cases. One third of these developed an autoimmune disease such as multiple sclerosis. Of critical importance is his finding that even in the absence of obvious autoimmune disease there is evidence of chronic immune stimulation caused by the injected aluminum, known to be a very powerful immune adjuvant. The reason this is so important is that there is overwhelming evidence that chronic immune activation in the brain (activation of microglial cells in the brain) is a major cause of damage in numerous degenerative brain disorders, from multiple sclerosis to the classic neurodegenerative diseases (Alzheimer’s disease, Parkinson’s and ALS). In fact, I have presented evidence that chronic immune activation of CNS microglia is a major cause of autism, attention deficit disorder and Gulf War Syndrome. Dr. Gherardi emphasizes that once the aluminum is injected into the muscle, the immune activation persists for years. In addition, we must consider the effect of the aluminum that travels to the brain itself. Numerous studies have shown harmful effects when aluminum accumulates in the brain. A growing amount of evidence points to high brain aluminum levels as a major contributor to Alzheimer’s disease and possibly Parkinson’s disease and ALS (Lou Geherig’s disease). This may also explain the 10X increase in Alzheimer’s disease in those receiving the flu vaccine 5 years in a row. (Dr. Hugh Fudenberg, in press, Journal of Clinical Investigation). It is also interesting to note that a recent study found that aluminum phosphate produced a 3X elevation in blood levels of aluminum, as did aluminum hydroxide (Flarend RE, Hem SL, et al. In vivo absorption of aluminum-containing vaccine adjuvants using 26Al. Vaccine 1997 Aug.-Sept.;15:1314–8). Of course, in this conference, our illustrious experts tell us that there is “no data showing an additive or synergistic effect between mercury and aluminum.” Dr. Rapin expressed her concern over public opinion when this information eventually gets out. She says (page 197), they are going to be captured by the public and we had better make sure that “(a) we counsel them carefully and (b) that we pursue this because of the very important public health and public implications of the data.” Dr. Johnson adds, “the stakes are very high...” From this, how can one conclude anything other than the fact that at least these scientists were extremely concerned by what was discovered by this study examining the Vaccine Safety Datalink material? They were obviously terrified that the information would leak out to the public. Stamped in bold letters at the top of each page of the study were the words: “DO NOT COPY OR RELEASE” and “CONFIDENTIAL”. This is not the wording one would expect on a clinical study of vaccine safety; rather you would expect it on topsecret NSA or CIA files. Why was this information being kept secret? The answer is obvious—it might endanger the vaccine program and indict the federal regulatory agencies for ignoring this danger for so many years. Our society is littered with millions of children who have been harmed in one degree or another by this vaccine policy. In addition, let us not forget the millions of parents who have had to watch helplessly as their children have been destroyed by this devastating vaccine program. Dr. Bernier on page 198 says, “the negative findings need to be pinned down and published.” Why was he so insistent that the “negative findings” be published? Because he said, “other less responsible parties will treat this as a signal.” By that he means, a signal of a problem with Thimerosal-containing vaccines. From this, I assume he wants a paper that says only that nothing was found by the study. As we shall see, he gets his wish. In addition, on page 198, Dr. Rapin notes that a study in California found a 300X increase in autism following the introduction of certain vaccines. She quickly attributes this to better physician recognition. Two things are critical to note at this point. She makes this assertion on better physician recognition without any data at all, just her wishful thinking. If someone pointing out the dangers of vaccines were to do that, she would scream “junk science”. Second, Dr. Weil on page 207, attacks this reasoning when he says, “the number of dose related relationships are linear and statistically significant. You can play with this all you want. They are linear. They are statistically significant.” In other words, how can you argue with results that show a strong dose/response relationship between the dose of mercury and neurodevelopmental outcomes? The higher the mercury levels in the children the greater the number of neurological problems. He continues by saying that the increase in neurobehavioral problems is probably real. He tells them that he works in a school system with special education programs and “I have to say the number of kids getting help in special education is growing nationally and state by state at a rate not seen before. So there is some kind of increase. We can argue about what it is due to.” (page 207) Dr. Johnson seems to be impressed by the findings as well. He says on page 199, “This association leads me to favor a recommendation that infants up to two years old not be immunized with Thimerosal-containing vaccines if suitable alternative preparations are available.” Incredibly, he quickly adds, “I do not believe the diagnosis justifies compensation in the Vaccine Compensation Program at this point.” It is interesting to note that one of our experts in attendance is Dr. Vito Caserta, the Chief Officer for the Vaccine Injury Compensation Program. At this point Dr. Johnson tells the group of his concerns for his own grandchild. He says, (page 200) “Forgive this personal comment, but I got called out at eight o’clock for an emergency call and my daughter-in-law delivered a son by C-section. Our first male in the line of the next generation and I do not want that grandson to get a Thimerosal-containing vaccine until we know better what is going on. It will probably take a long time. In the meantime, and I know there are probably implications for this internationally, but in the meanwhile I think I want that grandson to only be given Thimerosal-free vaccines.” So, we have a scientist sitting on this panel which will eventually make policy concerning all of the children in this country, as well as other countries, who is terrified about his new grandson getting a Thimerosal-containing vaccine but he is not concerned enough about your child to speak out and try to stop this insanity. He allows a cover-up to take place after this meeting adjourns and remains silent. It is also interesting to note that he feels the answers will be a long time coming, but in the mean time, his grandson will be protected. The American Academy of Pediatrics, The American Academy of Family Practice, the AMA, CDC and every other organization will endorse these vaccines and proclaim them to be safe as spring water, but Dr. Johnson and some of the others will keep their silence. It is only during the last day of the conference that we learn that most of the objections concerning the positive relationship between Thimerosal-containing vaccines and ADD and ADHD were bogus. For example, Dr. Rapin on page 200 notes that all children in the study were below age 6 and that ADD and ADHD are very difficult to diagnose in pre-schoolers. She also notes that some children were followed for only a short period. Dr. Stein adds that in fact the average age for diagnosis of ADHD was 4 years and 1 month, a very difficult diagnosis to make with the guidelines, as published by the American Academy of Pediatrics, limiting diagnosis to 6 to 12 year olds. Of course, he was implying that too many were diagnosed as ADHD. Yet, a recent study found that the famous Denmark study that led to the announcement by the Institute of Medicine that there was no relationship between autism and the MMR vaccine, used the same tactic. They cut off the age of follow-up at age six. It is known that many cases appear after this age group, especially with ADD and ADHD. In fact, most learning problems appear as the child is called on to handle more involved intellectual material. Therefore, the chances are that they failed to diagnose a number of cases by stopping the study too early. Several of the participants tried to imply that autism was a genetic disorder and therefore could have nothing to do with vaccines. Dr. Weil put that to rest with this comment, “We don’t see that kind of genetic change in 30 years.” In other words, how can we suddenly see a 300% increase in a genetically related disorder over such a short period? It is also known that there are two forms of autism, one that is apparent at birth and one that develops later in childhood. The former has not changed in incidence since statistics have been kept; the other is epidemic. One interesting exchange, which involves two studies in children born to mothers consuming high intakes of mercury-contaminated fish, ends up providing their justification for the view that mercury is of no danger to children vaccinated with vaccines containing Thimerosal. One study in the journal Neurotoxicology, examined children living in the Republic of Seychelles. This study examined the effect of prenatal exposure to mercury through the mother’s consumption of fish high in methylmercury. A battery of developmental milestone tests were done and no adverse effects were reported in the study done by Dr. Clarkson and co-workers, the very same person in this conference. He never mentions that a follow-up study of these same children did find a positive correlation between methylmercury exposure and poor performance on a memory test. In a subsequent study of children living on the Faroe Islands exposed to methylmercury, researchers also found impairments of neurodevelopment. This experiment was done by scientists from Japan. Throughout the remainder of this discussion, Dr. Clarkson and others refer to these two studies. When they are reminded that the Faroe study did find neurological injury to the children, they counter by saying that this was prenatal exposure to mercury and not exposure following birth as would be seen with vaccination. The idea being that prenatally the brain is undergoing neural formation and development making it more vulnerable. As I have mentioned, this rapid brain growth and development continues for two years after birth and even at age 6 years the brain is only 80% formed. Dr. Clarkson keeps referring to the Seychelles study which demonstrated that the children reached normal neurodevelopmental milestones as shown by a number of tests. Dr Weil points out on page 216 that this tells us little about these children’s future brain function. He says, “I have taken a lot of histories of kids who are in trouble in school. The history is that developmental milestones were normal or advanced and they can’t read at second grade, they can’t write at third grade, they can’t do math in the fourth grade and it has no relationship as far as I can tell to the history we get of the developmental milestones. So I think this is a very crude measure of neurodevelopment.” In other words, both of these studies tell us nothing about the actual development of these children’s brain function except that they reached the most basic of milestones. To put this another way, your child may be able to stack blocks, recognize shapes and have basic language skills, but later in life she/he could be significantly impaired when it came to higher math, more advanced language skills (comprehension) and ability to compete in a very competitive intellectual environment, like college or advanced schooling. The future of such children would be limited to the more mundane and intellectually limited jobs. Postnatal brain development, that is from birth to age six or seven, involves the fine tuning of synaptic connections, dendritic development and pathway refinement, all of which prepare the brain for more complex thinking. These brain elements are very sensitive to toxins and excessive immune stimulation during this period. This fact is never mentioned at the conference. In addition, it must be remembered that the children in these two studies were exposed only to methylmercury and not the combined neurotoxic effect of mercury, aluminum and excessive and chronic activation of the brain’s immune system (microgia). This is what makes it so incredible, that several of these “vaccinologists” and so-called experts would express doubt about the “biological plausibility” of Thimerosal or any vaccine component causing neurodevelopmental problems. The medical literature is exploding with such studies. The biological plausibility is very powerful. Mercury, for example, even in low concentrations, is known to impair energy production by mitochondrial enzymes. The brain has one of the highest metabolic rates of any organ and impairment of its energy supply, especially during development, can have devastating consequences. In addition, mercury, even in lower concentrations, is known to damage DNA and impair DNA repair enzymes, which again plays a vital role in brain development. Mercury is known to impair neurotubule stability, even in very low concentrations. Neurotubules are absolutely essential to normal brain cell function. Mercury activates microglial cells, which increases excitotoxicity and brain free radical production as well as lipid peroxidation, central mechanisms in brain injury. In addition, even in doses below that which can cause obvious cell injury, mercury impairs the glutamate transport system, which in turn triggers excitotoxicity, a central mechanism in autism and other neurological disorders. Ironically, aluminum also paralyzes this system. On page 228, we see another admission that the government has had no interest in demonstrating the safety of Thimerosal-containing vaccines despite over 2000 articles showing harmful effects of mercury. Here we see a reference to the fact that the FDA “has a wonderful facility in Arkansas with hundreds of thousands of animals” available for any study needed to supply these answers on safety. The big question to be asked is – So, why has the government ignored the need for research to answer these questions concerning Thimerosal safety? You will recall in the beginning the participants of this conference complained that there were just so few studies or no studies concerning this “problem”. Again, on page 229 Dr, Brent rails about the lawsuit problem. He tells the others that he has been involved in three lawsuits related to vaccine injuries leading to birth defects and concluded, “If you want to see junk science, look at those cases...” He then complains about the type of scientists testifying in these cases. He adds, “But the fact is those scientist are out there in the United States.” In essence, he labels anyone who opposes the “official policy” on vaccines as a junk scientists. We have seen in the discussion who the “junk scientists” really are. Knowing that what they have found can cause them a great deal of problems he adds, “The medical/legal findings in this study, causal or not, are horrendous.... If an allegation was made that a child’s neurobehavioral findings were caused by Thimerosal-containing vaccines, you could readily find a junk scientist who will support the claim with a reasonable degree of certainty.” On page 229 he then admits that they are in a bad position because they have no data for their defense. Now, who are the junk scientists? Is a “real scientist” one who has no data, just wishful thinking and a “feeling” that everything will be all right? Are real scientists the ones who omit recognized experts on the problem in question during a conference because it might endanger the “program”? Are they the ones who make statements that they don’t want their grandson to get Thimerosal-containing vaccines until the problem is worked out, but then tell millions of parents that the vaccines are perfectly safe for their children and grandchildren? Dr. Meyers on page 231 put it this way, “My own concern, and a couple of you said it, there is an association between vaccines and outcomes that worries both parents and pediatricians.” He sites other possible connections to vaccine-related neurobehavioral and neurodevelopmental problems including the number of vaccines being given, the types of antigens being used, and other vaccine additives. Dr. Caserta tells the group that he attended the aluminum conference the previous year and learned that metals could often act differently in biological systems when existing as an ion. This is interesting in the face of the finding that fluoride when combined to aluminum forms a compound that can destroy numerous hippocampal neurons at a concentration of 0.5 ppm in drinking water. It seems that aluminum readily combines with fluoride to form this toxic compound. With over 60% of communities having fluoridated drinking water this becomes a major concern. It has also been learned that fluoroaluminum compounds mimic the phosphate and can activate G-proteins. Gproteins play a major role in numerous biological systems, including endocrine, neurotransmitters, and as cellular second messengers. Some of the glutamate receptors are operated by a G- protein mechanism. Over the next ten to fifteen pages, they discuss how to control this information so that it will not get out and if it does how to control the damage. On page 248 Dr. Clements has this to say: “But there is now the point at which the research results have to be handled, and even if this committee decides that there is no association and that information gets out, the work has been done and through the freedom of information that will be taken by others and will be used in other ways beyond the control of this group. And I am very concerned about that as I suspect that it is already too late to do anything regardless of any professional body and what they say.” In other words, he wants this information kept not only from the public but also from other scientists and pediatricians until they can be properly counseled. In the next statement he spills the beans as to why he is determined that no outsider get hold of this damaging information. He says, “My mandate as I sit here in this group is to make sure at the end of the day that 100,000,000 are immunized with DTP, Hepatitis B and if possible Hib, this year, next year, and for many years to come, and that will have to be with Thimerosal-containing vaccines unless a miracle occurs and an alternative is found quickly and is tried and found to be safe.” This is one of the most shocking statements I have ever heard. In essence, he is saying, I don’t care if the vaccines are found to be harmful and destroying the development of children’s brains, these vaccines will be given now and forever. His only concern, by his own admission, is to protect the vaccine program even if it is not safe. Dr. Brent refers to this as an “eloquent statement.” On page 253, we again see that these scientists have a double standard when it comes to their children and grandchildren. Dr. Rapin raises the point about a loss of an IQ point caused by Thimerosal exposure. She says, “Can we measure the IQ that accurately, that this one little point is relevant?” Then she answers her own question by saying, “Even in my grandchildren, one IQ point I am going to fight about.” Yet, they are saying in unison, in essence—“To hell with your children”—to the rest of America. It is also interesting that they bring up the history of lead as a neurobehavioral toxin. Dr. Weil noted that the neurotoxicologists and regulatory agencies have lowered the acceptable level from 10 to 5μg. In fact, some feel that even lower levels are neurotoxic to the developing brain. Before the toxicologists began to look at lead as a brain toxin in children most “experts” assumed it was not toxic even at very high levels. Again, it shows that “experts” can be wrong and it is the public who pays the price. Dr. Chen on page 256 expresses his concern about this information reaching the public. He remarks, “We have been privileged so far that given the sensitivity of information, we have been able to manage to keep it out of, let’s say, less responsible hands...” Dr. Bernier agrees and notes, “This information has been held fairly tightly.” Later he calls it “embargoed information” and “very highly protected information.” That they knew the implications of what they had discovered was illustrated by Dr. Chen’s statement on page 258. He says, “I think overall there was this aura that we were engaged in something as important as anything else we have ever done. So I think that this was another element to this that made this a special meeting.” You may remember, Dr. Weil emphasized that the data analysis left no doubt that there was a strong correlation between neurodevelopmental problems and exposure to Thimerosal-containing vaccines. So if they understood the importance of this finding and this was the most important thing they have ever dealt with, why was this being kept from the public? In fact, it gets even worse. Just so you will not doubt my statement that this audience of experts was not objective, I give you the words of Dr. Walter Orenstein, Director of the National Immunization Program at the CDC, on page 259. He tells the group, “I have seen him (Verstraeten) in audience after audience deal with exceedingly skeptical individuals...” “Exceedingly skeptical individuals” does that sound like objective scientists who wanted to look at the data with a clear mind, or were they scientists who were convinced before the meeting was held that there was no danger to children from Thimerosal or any other vaccine component? In one of the closing remarks (page 257) Dr. Bernier says, “the other thing I was struck by was the science,” meaning the science expressed by the attendees of the meeting. Then Dr, Orenstein adds, “I would also like to thank Roger Bernier who pulled off this meeting in rather short notice...” Here is a meeting that has been called one of the most important they have ever dealt with and we learn that it was “pulled off” on short notice. In addition, we were told that the results of this meeting would lead to eventual vaccine policy. He then has the nerve to add: “In a sense this meeting addresses some of the concerns we had last summer when we were trying to make policy in the absence of a careful scientific review. I think this time we have gotten it straight.” Well, I hate to be the one to break the news, but he didn’t get it straight. There was little or no science in this meeting; rather it was composed of a lot of haggling and nit picking over epidemiological methodology and statistical minutia in an effort to discredit the data, all without success. In fact, the so-called mercury experts admitted they had to do some quick homework to refresh their memories and learn something about the subject. Conclusions This top secret meeting was held to discuss a study done by Dr. Thomas Verstraeten and his co-workers using Vaccine Safety Datalink data as a project collaboration between the CDC’s National Immunization Program (NIP) and four HMOs. The study examined the records of 110,000 children. Within the limits of the data, they did a very thorough study and found the following: 1. Exposure to Thimerosal-containing vaccines at one month was associated significantly with the misery and unhappiness disorder that was dose related. That is, the higher the child’s exposure to Thimerosal the higher the incidence of the disorder. This disorder is characterized by a baby that cries uncontrollably and is fretful more so than that seen in normal babies. 2. A nearly significant increased risk of ADD with 12.5μg exposure at one month. 3. With exposure at 3 months, they found an increasing risk of neurodevelopmental disorders, including speech disorders, with increasing exposure to Thimerosal. This was statistically significant. It is important to remember that the control group was not children without Thimerosal exposure but, rather, those at 12.5μg exposure. This means that there is a significant likelihood that even more neurodevelopmental problems would have been seen had they used a real control population. No one disagreed that these findings were significant and troubling. Yet, when the final study was published in the journal Pediatrics, Dr. Verstraeten and co-workers reported that no consistent associations were found between Thimerosal-containing vaccine exposure and neurodevelopmental problems. In addition, he lists himself as an employee of the CDC, not disclosing the fact that at the time the article was accepted, he worked for GlaxoSmithKline, a vaccine manufacturing company. So how did they do this bit of prestidigitation? They simply added another HMO to the data: the Harvard Pilgrimage. (Additionally there were other manipulations, e.g., altering inclusion criteria, discarding children receiving the highest total dose, splitting children into separate groups, using only one HMO’s data in some cases, expressing effects ratios in terms of per dose of mercury.) Congressman Dave Weldon noted in his letter to the CDC Director that this HMO had been in receivership by the state of Massachusetts because its records were in shambles. Yet, this study was able to make the embarrassing data from Dr. Verstraeten’s previous study disappear. Attempts by Congressman Weldon to force the CDC to release the data to an independent researcher, Dr. Mark Geier, a researcher with impeccable credentials and widely published in peer-reviewed journals, have failed and the CDC now claims that the original data-sets Verstraeten et al. used have been “lost”. It is obvious that a massive cover-up is in progress, as we have seen with so many other scandals, such as fluoride, food-based excitotoxins, pesticides, aluminum, and now vaccines. I would caution those critical of the present vaccine policy not to put all their eggs in one basket, that is, with Thimerosal as being the main culprit. There is no question that it plays a significant role, but there are other factors that are also critical, including aluminum, fluoroaluminum complexes, and chronic immune activation of brain microglia. I believe that repeated, closely spaced, sequential vaccinations given during the most active period of brain development is the major cause of autism. In fact, excessive, chronic microglial activation can explain many of the effects of excessive vaccine exposure as I point out in two recently published articles. One property of both aluminum and mercury is microglial activation. With chronic microglial activation, large concentrations of excitotoxins are released as well as neurotoxic cytokines. These have been shown to destroy synaptic connections, dendrites and cause abnormal pathway development in the developing brain as well as in the adult brain. In essence, too many vaccines are being given to children during the brain’s most rapid growth period. Known toxic metals are being used in vaccines, interfering with brain metabolism and antioxidant enzymes, damaging DNA and DNA repair enzymes and triggering excitotoxicity. Removing the mercury will help but will not solve the problem because overactivation of the brain’s immune system will cause varying degrees of neurological damage to the highly-vulnerable developing brain. Full Report With References: www.vacinfo.org/man1714_1726.pdf DNA Repair Amsterdam • January 2009 DNA Repair Modulates The Vulnerability Of The Developing Brain To Alkylating Agents Author Information G.E. Kisby,*,1 A. Olivas,1 T. Park,1 M. Churchwell,2 D. Doerge,2 L. D. Samson,3 S.L. Gerson,4 and M.S. Turker1 1. Center for Research on Occupational and Environmental Toxicology (CROET) Oregon Health Sciences University, Portland, OR 97201 2. NCTR, Jefferson, AR 3. Biological Engineering Division, Center for Environmental Health Sciences Massachusetts Institute of Technology, Cambridge, MA 02139 4. Case Western Reserve University, Case Comprehensive Cancer Center 10900 Euclid Avenue, Cleveland, OH 44106 Abstract Neurons of the developing brain are especially vulnerable to environmental agents that damage DNA (i.e., genotoxicants), but the mechanism is poorly understood. The focus of the present study is to demonstrate that DNA damage plays a key role in disrupting neurodevelopment. To examine this hypothesis, we compared the cytotoxic and DNA damaging properties of the methylating agents methylazoxymethanol (MAM) and dimethyl sulfate (DMS) and the mono- and bifunctional alkylating agents chloroethylamine (CEA) and nitrogen mustard (HN2), in granule cell neurons derived from the cerebellum of neonatal wild type mice and three transgenic DNA repair strains. Wild type cerebellar neurons were significantly more sensitive to the alkylating agents DMS and HN2 than neuronal cultures treated with MAM or the half-mustard CEA. Parallel studies with neuronal cultures from mice deficient in alkylguanine DNA glycosylase (Aag-/-) or O6-methylguanine methyltransferase (Mgmt-/-), revealed significant differences in the sensitivity of neurons to all four genotoxicants. Mgmt-/- neurons were more sensitive to MAM and HN2 than the other genotoxicants and wild type neurons treated with either alkylating agent. In contrast, Aag/- neurons were for the most part significantly less sensitive than wild type or Mgmt-/- neurons to MAM and HN2. Aag-/- neurons were also significantly less sensitive than wild type neurons treated with either DMS or CEA. Granule cell development and motor function were also more severely disturbed by MAM and HN2 in Mgmt-/- mice than in comparably treated wild type mice. In contrast, cerebellar development and motor function were well preserved in MAM treated Aag-/- or MGMT overexpressing (MgmtTg+) mice, even as compared with wild type mice suggesting that AAG protein increases MAM toxicity, whereas MGMT protein decreases toxicity. Surprisingly, neuronal development and motor function were severely disturbed in MgmtTg+ mice treated with HN2. Collectively, these in vitro and in vivo studies demonstrate that the type of DNA lesion and the efficiency of DNA repair are two important factors that determine the vulnerability of the developing brain to long-term injury by a genotoxicant. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2692311/ “Neurons of the developing brain are especially vulnerable to environmental agents that damage DNA (i.e., genotoxicants), but the mechanism is poorly understood. Collectively, these in vitro and in vivo studies demonstrate that the type of DNA lesion and the efficiency of DNA repair are two important factors that determine the vulnerability of the developing brain to long-term injury by a genotoxicant.” “Of these 1162 cases, 1105 were considered to be related to the vaccination ...” European Journal of Pediatrics • January 2009 Discolored leg syndrome after vaccination—descriptive epidemiology Jeanet M. Kemmeren , Patricia E. Vermeer-de Bondt, Nicoline A. T. van der Maas Abstract Discoloration of the leg following vaccination is a relatively unknown entity. We carried out a study of discolored leg syndrome (DLS) during a 10-year consecutive period with the objective of characterizing DLS in infants following vaccination received in the Dutch National Vaccination Program as well as its occurrence and association with different vaccines. Discolored leg syndrome was defined as an even or patchy red, blue or purple discoloration of the leg(s) and/or leg petechiae with or without swelling. All reports of adverse events following immunization that were made to the passive surveillance system between 1994 and 2003 were included—a total of 1162 identified cases. Red, blue, purple discoloration and isolated petechiae were reported in 39, 19, 27 and 14% of these cases, respectively. Of these 1162 cases, 1105 were considered to be related to the vaccination, based on a predefined risk window with symptom onset after vaccination (48 h for discolorations and 2 weeks for petechiae). Of the 1105 cases, about 50% occurred after DTP-IPV+Hib1 vaccinations, and 30% occurred after DTP-IPV+Hib2 vaccinations. Discolored leg syndrome was frequently accompanied by fierce crying (78%). The median time interval between vaccination and the occurrence of DLS was 3.8 ± 46.7 h, and the median duration was short (2 ± 61.7 h). Advancing the vaccination schedule from 3 to 2 months of age caused a small increase in DLS. Discolored leg syndrome manifested mainly after the first and/or second vaccination. In addition to dose, the occurrence of DLS may be slightly age-dependent and self-limiting. The pathophysiology is unknown but may be the result of a vasomotor reaction. Future studies should elucidate the recurrence rate, identify risk factors and assess late outcomes. http://link.springer.com/article/10.1007%2Fs00431-008-0707-0 “... Triton X-100 (TX)-induced apoptosis.” Biochemical And Biophysical Research Communications • January 2009 Differential roles for Bak in Triton X-100and deoxycholate-induced apoptosis Author information Sawai H1, Domae N. Department of Internal Medicine, Osaka Dental University 8-1 Kuzuhahanazonocho, Hirakata, Osaka 573-1121, Japan Abstract We recently reported that Bax activation occurs downstream of caspase activation in Triton X-100 (TX)-induced apoptosis. Here, Bak was found to be activated in TX-induced apoptosis. Although z-VAD-fmk completely suppressed Bax activation, it only partially attenuated TX-induced Bak activation. Moreover, activation of both Bak and Bax was detected in apoptosis induced by deoxycholate, a physiological detergent in bile. z-VAD-fmk completely suppressed deoxycholate-induced Bak as well as Bax activation. Furthermore, Bak siRNA attenuated TX- but not deoxycholate-induced caspase activation. These results suggest that Bak activation may occur upstream of caspase activation in TX- but not deoxycholate-induced apoptosis and that the mechanism of TX-induced apoptosis may differ from that of deoxycholate-induced apoptosis at least with regard to the role for Bak. http://www.ncbi.nlm.nih.gov/pubmed/19041633 Journal Of Neuroimmunology • February 2009 Elevated immune response in the brain of autistic patients Author information Li X1, Chauhan A, Sheikh AM, Patil S, Chauhan V, Li XM, Ji L, Brown T, Malik M. Abstract This study determined immune activities in the brain of ASD patients and matched normal subjects by examining cytokines in the brain tissue. Our results showed that proinflammatory cytokines (TNF-alpha, IL-6 and GM-CSF), Th1 cytokine (IFN-gamma) and chemokine (IL8) were significantly increased in the brains of ASD patients compared with the controls. However the Th2 cytokines (IL-4, IL-5 and IL-10) showed no significant difference. The Th1/Th2 ratio was also significantly increased in ASD patients. Conclusion ASD patients displayed an increased innate and adaptive immune response through the Th1 pathway, suggesting that localized brain inflammation and autoimmune disorder may be involved in the pathogenesis of ASD. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2770268/ “ASD patients displayed an increased innate and adaptive immune response through the Th1 pathway, suggesting that localized brain inflammation and autoimmune disorder may be involved in the pathogenesis of ASD.” “... these occurrences support an association between receipt of aluminium adjuvant and sterile abscesses in susceptible patients.” BMJ Case Reports • March 2009 Findings that shed new light on the possible pathogenesis of a disease or an adverse effect Recurrent sterile abscesses following aluminium adjuvant-containing vaccines Author Information Nicola P Klein1, Kathryn M Edwards3, Robert C Sparks3, Cornelia L Dekker2, on behalf of the Clinical Immunization Safety Assessment (CISA) Network 1. Kaiser PermanenteVaccine Study Center, 16th Floor, One Kaiser Plaza, Oakland, California 94612, USA 2. Stanford University School of Medicine, Division of Pediatric Infectious Diseases, 300 Pasteur Drive, Stanford, California, USA 3. Vanderbilt University Medical Center, Vanderbilt Vaccine Research Program, Department of Pediatrics 1211 Medical Center Drive, Nashville, Tennessee 37232, USA Nicola Klein, Nicola.Klein@kp.org Summary Abscess formation following immunisation is a previously reported complication, generally associated with microbial contamination of the vaccine. Less commonly, such abscesses have been sterile. Here we describe two children evaluated in the Center for Disease Control and Prevention (CDC)-funded Clinical Immunization Safety Assessment (CISA) network who developed recurrent sterile abscesses after administration of vaccines containing aluminium adjuvant, either individually or in combination. Although the abscesses healed without sequelae, these occurrences support an association between receipt of aluminium adjuvant and sterile abscesses in susceptible patients. For patients with similar symptoms, clinicians may wish to choose a vaccine formulation containing the least amount of aluminium adjuvant. http://casereports.bmj.com/content/2009/bcr.09.2008.0951.long Mutation Research • March 2009 Formaldehyde exposure and leukemia: a new meta-analysis and potential mechanisms Author information Zhang L1, Steinmaus C, Eastmond DA, Xin XK, Smith MT. School of Public Health 50 University Hall University of California Berkeley, CA 94720-7356, USA luoping@berkeley.edu Abstract Formaldehyde is an economically important chemical, to which more than 2 million U.S. workers are occupationally exposed. Substantially more people are exposed to formaldehyde environmentally, as it is generated by automobile engines, is a component of tobacco smoke and is released from household products, including furniture, particleboard, plywood, and carpeting. The International Agency for Research on Cancer (IARC) recently classified formaldehyde as a human carcinogen that causes nasopharyngeal cancer and also concluded that there is “strong but not sufficient evidence for a causal association between leukemia and occupational exposure to formaldehyde”. Here, we review the epidemiological studies published to date on formaldehyde-exposed workers and professionals in relation to lymphohematopoietic malignances. In a new meta-analysis of these studies, focusing on occupations known to have high formaldehyde exposure, we show that summary relative risks (RRs) were elevated in 15 studies of leukemia (RR=1.54; confidence interval (CI), 1.182.00) with the highest relative risks seen in the six studies of myeloid leukemia (RR=1.90; 95% CI, 1.31-2.76). The biological plausibility of this observed association is discussed and potential mechanisms proposed. We hypothesize that formaldehyde may act on bone marrow directly or, alternatively, may cause leukemia by damaging the hematopoietic stem or early progenitor cells that are located in the circulating blood or nasal passages, which then travel to the bone marrow and become leukemic stem cells. To test these hypotheses, we recommend that future studies apply biomarkers validated for other chemical leukemogens to the study of formaldehyde. http://www.ncbi.nlm.nih.gov/pubmed/?term=18674636 “formaldehyde may act on bone marrow directly or, alternatively, may cause leukemia by damaging the hematopoietic stem or early progenitor cells that are located in the circulating blood or nasal passages, which then travel to the bone marrow and become leukemic stem cells.” Journal Of Neurochemistry • March 2009 Vaccination alone or in combination with pyridostigmine promotes and prolongs activation of stress-activated kinases induced by s tress in the mouse brain Author information Wang D1, Perides G, Liu YF. 1Department of Pharmacology Boston University School of Medicine Massachusetts 02118, USA Abstract Gulf war illnesses (GWI) are currently affecting thousands of veterans. To date, the molecular mechanisms underlying the pathogenesis of these illnesses remain unknown. During Gulf war I, military personnel were exposed to multiple stressors, one or more vaccines, pyridostigmine (PY), and other chemicals. In our previous studies, we found that stress induces activation of mitogen activated protein-kinase kinase 4 (MKK4) and c-Jun-N-terminal kinase (JNK) in the mouse brain (Liu et al. 2004). Our working hypothesis is that stress, vaccination, and PY may synergistically induce activation of MKK4 and JNK in the brain, leading to over-activation of these kinases and neurological injuries. To test our hypothesis, we examined the effect of keyhole limpet hemocyanin (KLH) immunization alone or in combination with PY on activation of MKK4 and JNK induced by stress. We found that KLH immunization alone had a small effect on MKK4 or JNK activity but it significantly enhanced and prolonged activation of these kinases induced by stress, from a few hours to several days. Additionally, KLH immunization caused activation of p38MAPK. PY treatment further enhanced and prolonged activation of these kinases induced by stress in combination with KLH immunization and triggered activation of caspase-3. Our current studies suggest that stress, vaccination, and PY may synergistically act on multiple stress-activated kinases in the brain to cause neurological impairments in GWI. http://www.ncbi.nlm.nih.gov/pubmed/?term=15857404 Full Report: http://onlinelibrary.wiley.com/doi/10.1111/j.1471-4159.2005.03093.x/full “Gulf war illnesses (GWI) are currently affecting thousands of veterans. Our current studies suggest that stress, vaccination, and pyridostigmine may synergistically act on multiple stress-activated kinases in the brain to cause neurological impairments in Gulf war illnesses.” Deutsches Arzteblatt International • April 2009 Correspondence (letter to the editor): Long Term Side Effects Due to Vaccination And Pharmacovigilance Maurice Pich,* Arno Köster,* and Andreas Klement, Dr. Institut für Allgemeinmedizin Martin-Luther-Universität Halle-Wittenberg 06112 Halle/Saale, Germany We thank the authors for their clear overview of vaccine sceptics’ common objections, which are helpful for everyday clinical practice. Most vaccinations and vaccination advice in Germany are given by general practitioners and pediatricians. Appropriate and responsible advice includes providing information to those about to receive the vaccine and their parents, about rare but possible side effects. These include the possible occurrence of Guillain-Barré syndromes after flu vaccinations (1), for example; the possible association between recombinant hepatitis B vaccine and multiple sclerosis (2), which is still under discussion in current publications; and the unexplained possible association of multiple vaccinations with neurodegenerative disorders in connection with aluminum hydroxide, which to date is the most common vaccine adjuvant in use (3). Long term side effects due to vaccination can be detected to a sufficiently high quality standard only by means of long term, active pharmacovigilance conducted through independent and sufficiently equipped monitoring systems. To assess the long term safety of vaccines, passive post-vaccination observation by notification of vaccination complications by primary care physicians is not enough: possible causal associations with developing disorders—for example, neurodegenerative disorders—are difficult to state in individual cases years after the vaccine was given. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2689587/ “... the possible occurrence of Guillain-Barré syndromes after flu vaccinations, for example; the possible association between recombinant hepatitis B vaccine and multiple sclerosis, which is still under discussion in current publications; and the unexplained possible association of multiple vaccinations with neurodegenerative disorders in connection with aluminum hydroxide, which to date is the most common vaccine adjuvant in use ...” Journal Of Environmental Monitoring • May 2009 JEM spotlight: metal speciation related to neurotoxicity in humans Author information Michalke B1, Halbach S, Nischwitz V. Helmholtz Zentrum München Institute of Ecological Chemistry, 85764 Neuherberg, Germany bernhard.michalke@helmholtz-muenchen.de Abstract Improved living conditions have led to a steady increase in the life expectancy of humans in most countries. However, this is accompanied by an increased probability of suffering from neurodegenerative diseases like Alzheimer’s disease or Parkinson’s disease. Unfortunately, the therapeutic possibilities for curing these diseases are very limited up to now. Many studies indicate that a variety of environmental factors contribute to the initiation and promotion of neurodegenerative diseases. For example, the role of metal exposure and disturbance of metal homeostasis in the brain is discussed in this respect. However, most studies focus on the neurological and toxicological aspects but not on a detailed characterisation of the species of the involved metals. Therefore, this review summarizes the neurotoxic effects of selected metals on humans and focuses on contributions from trace element speciation analysis with relevance to neuroscientific research. In spite of the advance in instrumentation and methodology of speciation analysis there are few applications for matrices like cerebrospinal fluid which is due to limited access to these samples and analytical challenges caused by matrix interferences, low concentrations and limited stability of many trace element species of interest. The most relevant neurotoxic metals aluminium, lead, manganese and mercury are reviewed in detail while further metals like cadmium, arsenic, bismuth and tin are briefly discussed. Current results indicate that knowledge on trace element speciation can contribute to a better understanding of the transport of metals across the neural barriers and potentially of their role in diseased human brains. http://www.ncbi.nlm.nih.gov/pubmed/19436852 “The most relevant neurotoxic metals aluminium, lead, manganese and mercury are reviewed in detail while further metals like cadmium, arsenic, bismuth and tin are briefly discussed. Current results indicate that knowledge on trace element speciation can contribute to a better understanding of the transport of metals across the neural barriers and potentially of their role in diseased human brains.” American Journal of Epidemiology • May 2009 Re: Determinants Of The Incidence Of Childhood Asthma: A Two-Stage Case-Control Study Author Information José G. Dórea Faculty of Health Sciences Universidade de Brasilia 70919-970 Brasilia, Brazil dorea@rudah.com.br Abstract In a recent article, Martel et al. (1) took into consideration 47 variables that could influence children’s asthma incidence but missed one that has been significantly researched—vaccines. The Quebec, Canada, children enrolled in the study were born between 1990 and 2002. During this time, Canada underwent major changes in types of vaccines and the calendar of immunization for infants and children: Thimerosal was withdrawn from infants’ vaccines, some of the vaccines were combined, some new vaccines were introduced, and still others underwent changes in their starting date and subsequent calendar; this without counting parental preference for administration of multiple shots at a single clinical visit. Some vaccines can contain thimerosal, which is a recognized sensitizer in children (2); additionally, a polymorphism in the glutathione S-transferase gene can alter its metabolism in children. Indeed, glutathione Stransferase M1 deficiency was found to be significantly more frequent among patients who had been sensitized to thimerosal (3). Thyssen et al. (4) speculated that the decrease in allergy in the general population of Denmark could be due to thimerosal’s no longer being used as a vaccine preservative in that country. Although contact allergy due to thimerosal is not a contraindication for receipt of vaccines, these reactions are expected to be fewer in the future because of changes in current vaccine formulations (5). Fombonne et al. (6) have described changes in vaccine formulations and schedules taking place in Canada from 1985 to 2006. The measlesmumps-rubella vaccines were officially incorporated in 1976 and were recommended for use at age 1 year in Quebec; as of 1996, 2 doses of measles-mumps-rubella vaccine were being given at ages 12 and 18 months. A combined diphtheria-tetanus-pertussis vaccine was recommended at ages 2, 4, 6, and 18 months and ages 4–6 years; this vaccine contained 50 μg of thimerosal and was used from 1985 to 1987. In 1988, a Haemophilus influenzae type b vaccine (which also contained thimerosal) was added to the schedule at 18 months of age. As of 1992, the H. influenzae type b vaccines were also administered at ages 2, 4, 6, and 18 months. The poliomyelitis vaccine was administered separately at ages 2, 4, and 18 months and ages 4–6 years from 1987 to 1995. With the exception of the measles-mumps-rubella and poliomyelitis vaccines, all of the vaccines contained 50 μg of thimerosal. Estimated cumulative exposure to thimerosal was 200 μg by age 2 years until 1988; it then increased to 250 μg by 1990. Therefore, as of 1992, cumulative exposure to thimerosal by age 2 years reached 400 μg (6). Because of mass immunization against meningococcal disease (occurring in 1993), there was additional exposure to thimerosal. Following Fombonne et al.’s (6) reasoning, there could have been different cumulative thimerosal exposures of 300 μg in children born between March 1990 and December 1991 and 450 μg in children born between January 1992 and September 1992. However, both the poliomyelitis and H. influenzae type b vaccines were combined with the diphtheria-pertussis (cellular)-tetanus vaccine in a thimerosal-free formulation in 1996; this pentavaccine was administered at ages 2, 4, 6, and 18 months, with a poliomyelitis-pertussis (cellular)-tetanus booster (thimerosal-free) being given at ages 4–6 years. In 1998, the cellular pertussis vaccine was replaced by the acellular vaccine in the pentavaccine. From 1996 onward, all immunizations were thimerosal-free. Nevertheless, there is 1 additional challenge that has been overlooked (or is difficult to track) by almost all epidemiologic studies that have addressed the issue of vaccines and asthma: multiple applications of different vaccines at a single immunization visit (7). A study carried out in Canada indicated a negative association between delay in administration of the first dose of diphtheria-pertussis-tetanus vaccine and the development of asthma; a greater association was shown with delays in the first 3 doses (8). De Serres et al. (9) also reported oculorespiratory syndrome as an adverse event that occurred with influenza vaccines used in Canada (2000–2003). http://aje.oxfordjournals.org/content/169/12/1532.long “Thyssen et al. speculated that the decrease in allergy in the general population of Denmark could be due to thimerosal’s no longer being used as a vaccine preservative in that country.” Archives Of Diseases In Childhood • Fetal & Neonatal Edition • July 2009 Toxic additives in medication for preterm infants Author information Whittaker A1, Currie AE, Turner MA, Field DJ, Mulla H, Pandya HC. Department of Infection Immunity & Inflammation, University of Leicester Robert Kilpatrick Clinical Sciences Building Leicester Royal Infirmary, Leicester LE2 7LX, UK hp28@le.ac.uk Abstract BACKGROUND Little is known about exposure of preterm infants to excipients during routine clinical care. OBJECTIVE To document excipient exposure in vulnerable preterm babies in a single centre, taking into account chronic lung disease (CLD) as a marker of illness severity. DESIGN Excipient exposure after treatment with eight oral liquid medications was determined by retrospectively analysing the drug charts of infants admitted to a neonatal unit. SETTING The Leicester Neonatal Service. PARTICIPANTS 38 infants born between June 2005 and July 2006 who were less than 30 weeks’ gestation and 1500 g in weight at birth and managed in Leicester to discharge. RESULTS The 38 infants represented 53% of the eligible target group; 7/38 infants had CLD. During their in-patient stay, infants were exposed to over 20 excipients including ethanol and propylene glycol, chemicals associated with neurotoxicity. Infants with CLD were exposed to higher concentrations of these toxins. Infants were also exposed to high concentrations of sorbitol, with some infants being exposed to concentrations in excess of recommended guidelines for maximum exposure in adults. CONCLUSIONS Preterm infants are commonly exposed to excipients, some of which are potentially toxic. Strategies aimed at reducing excipient load in preterm infants are urgently required. http://www.ncbi.nlm.nih.gov/pubmed/?term=19158148 “Preterm infants are commonly exposed to excipients, some of which are potentially toxic.” North American Journal Of Medical Science • July 2009 What is regressive autism and why does it occur? Is it the consequence of multi-systemic dysfunction affecting the elimination of heavy metals and the ability to regulate neural temperature? Graham E. Ewing, Director Montague Healthcare Mulberry House, 6 Vine Farm Close Cotgrave, Nottingham NG12 3TU, United Kingdom Abstract There is a compelling argument that the occurrence of regressive autism is attributable to genetic and chromosomal abnormalities, arising from the overuse of vaccines, which subsequently affects the stability and function of the autonomic nervous system and physiological systems. That sense perception is linked to the autonomic nervous system and the function of the physiological systems enables us to examine the significance of autistic symptoms from a systemic perspective. Failure of the excretory system influences elimination of heavy metals and facilitates their accumulation and subsequent manifestation as neurotoxins: the long-term consequences of which would lead to neurodegeneration, cognitive and developmental problems. It may also influence regulation of neural hyperthermia. This article explores the issues and concludes that sensory dysfunction and systemic failure, manifested as autism, is the inevitable consequence arising from subtle DNA alteration and consequently from the overuse of vaccines. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3364648/ “This article explores the issues and concludes that sensory dysfunction and systemic failure, manifested as autism, is the inevitable consequence arising from subtle DNA alteration and consequently from the overuse of vaccines.” Neuropediatrics • August 2009 Macrophagic myofasciitis plus (distinct types of muscular dystrophy) Author information Müller HD1, Landeghem FK, Schmidt PF, Sommer C, Goebel HH. Department of Neuropathology University Medical Center of the Johannes Gutenberg University Mainz Mainz, Germany mueller@neuropatho.klinik.uni-mainz.de Abstract Macrophagic myofasciitis (MMF) is a well-known lesion following vaccination with aluminium-containing vaccines. It has abundantly been reported in adults and several times in children, often in single patients or in rather small cohorts. Only few of these published reports on children have shown distinct myopathology of another neuromuscular disease except for MMF. Indications for biopsy often were nondescript clinical features in children, such as hypotonia or delay in motor development but, apparently, never that of suspected MMF. Thus, in previous reports as well as in our two patients, encountering MMF in the biopsied tissue specimens was coincidental. Our two unrelated patients with MMF also had two separate types of muscular dystrophy, a merosinopathy and dystrophinopathy, showing a combination of myopathologically well-defined neuromuscular diseases, muscular dystrophies and MMF. Detecting such a combination of two separate conditions may, in the future, be rare when non-invasive techniques, e. g., genetic, will have replaced muscle biopsy in ascertaining hereditary neuromuscular conditions, especially in children. http://www.ncbi.nlm.nih.gov/pubmed/20135575 “Macrophagic myofasciitis (MMF) is a well-known lesion following vaccination with aluminium-containing vaccines. It has abundantly been reported in adults and several times in children, often in single patients or in rather small cohorts. Our two unrelated patients with MMF also had two separate types of muscular dystrophy, a merosinopathy and dystrophinopathy, showing a combination of myopathologically well-defined neuromuscular diseases, muscular dystrophies and MMF.” Emerging Infectious Diseases • August 2009 Bordetella pertussis strains with increased toxin production associated with pertussis resurgence Author information Mooi FR1, van Loo IH, van Gent M, He Q, Bart MJ, Heuvelman KJ, de Greeff SC, Diavatopoulos D, Teunis P, Nagelkerke N, Mertsola J. National Institute for Public Health and the Environment Bilthoven, the Netherlands frits.mooi@rivm.nl Abstract Before childhood vaccination was introduced in the 1940s, pertussis was a major cause of infant death worldwide. Widespread vaccination of children succeeded in reducing illness and death. In the 1990s, a resurgence of pertussis was observed in a number of countries with highly vaccinated populations, and pertussis has become the most prevalent vaccine-preventable disease in industrialized countries. We present evidence that in the Netherlands the dramatic increase in pertussis is temporally associated with the emergence of Bordetella pertussis strains carrying a novel allele for the pertussis toxin promoter, which confers increased pertussis toxin (Ptx) production. Epidemiologic data suggest that these strains are more virulent in humans. We discuss changes in the ecology of B. pertussis that may have driven this adaptation. Our results underline the importance of Ptx in transmission, suggest that vaccination may select for increased virulence, and indicate ways to control pertussis more effectively. http://www.ncbi.nlm.nih.gov/pubmed/?term=19751581 “We present evidence that in the Netherlands the dramatic increase in pertussis is temporally associated with the emergence of Bordetella pertussis strains carrying a novel allele for the pertussis toxin promoter, which confers increased pertussis toxin (Ptx) production. Epidemiologic data suggest that these strains are more virulent in humans.” Acta Paediatrica • August 2009 Breastfeeding is an essential complement to vaccination Author information Dòrea JG. Department of Nutrition Universidade de Brasília 70919-970 Brasília, DF, Brazil dorea@rudah.com.br Abstract AIM: This article explores the role of breastfeeding in different aspects of vaccination in the first 6 months when infants are still developing: (1) pain management; (2) immunomodulation of infants’ vaccine responses; (3) metabolism of thimerosal. METHODS: Major databases were searched for studies that addressed outcomes of related issues. RESULTS: Studies reveal that breastfeeding can: (1) help mothers and infants to cope with the stressful situations that accompany parenteral vaccines; (2) improve response to vaccines in the still maturing immunologic and enterohepatic systems of infants; (3) influence physiologic parameters that can change metabolism of ethylmercury derived from some vaccines. CONCLUSION: Health promotion that supports vaccinations should also emphasize early initiation and maintenance of exclusive breastfeeding up until 6 months for maximum protection of the infants with a possible beneficial effect on the vaccine response. Paediatric professionals should inform mothers of the proven benefits of breastfeeding and its importance in complementing vaccination and lowering stress and the risk of untoward reactions on susceptible infants. http://www.ncbi.nlm.nih.gov/pubmed/19594471 “Health promotion that supports vaccinations should also emphasize early initiation and maintenance of exclusive breastfeeding up until 6 months for maximum protection of the infants with a possible beneficial effect on the vaccine response.” “This study demonstrates a significant positive association between the severity of autism and the relative body burden of toxic metals.” Journal Of Toxicology • August 2009 The Severity of Autism Is Associated with Toxic Metal Body Burden and Red Blood Cell Glutathione Levels J. B. Adams,1,* M. Baral,2 E. Geis,3 J. Mitchell,1 J. Ingram,3 A. Hensley,3 I. Zappia,3 S. Newmark,4 E. Gehn,3 R. A. Rubin,5 K. Mitchell,3 J. Bradstreet,2, 6 and J. M. El-Dahr7 1. Division of Basic Medical Sciences, Southwest College of Naturopathic Medicine, Tempe, AZ 85282, USA 2. Department of Pediatric Medicine, Southwest College of Naturopathic Medicine, Tempe, AZ 85282, USA 3. Autism Research Institute, San Diego, CA 92116-2599, USA 4. Center for Integrative Pediatric Medicine, Tucson, AZ 85711, USA 5. Department of Mathematics, Whittier College, Whittier, CA 90601-4413, USA 6. International Child Development Resource Center, Phoenix, AZ, USA 7. Department of Pediatrics, Tulane University School of Medicine, New Orleans, LA 70112, USA *J. B. Adams: Email: ∼ude.usa@smada.mij Abstract This study investigated the relationship of children’s autism symptoms with their toxic metal body burden and red blood cell (RBC) glutathione levels. In children ages 3–8 years, the severity of autism was assessed using four tools: ADOS, PDD-BI, ATEC, and SAS. Toxic metal body burden was assessed by measuring urinary excretion of toxic metals, both before and after oral dimercaptosuccinic acid (DMSA). Multiple positive correlations were found between the severity of autism and the urinary excretion of toxic metals. Variations in the severity of autism measurements could be explained, in part, by regression analyses of urinary excretion of toxic metals before and after DMSA and the level of RBC glutathione (adjusted R2 of 0.22–0.45, P < .005 in all cases). This study demonstrates a significant positive association between the severity of autism and the relative body burden of toxic metals. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2809421/ “... vaccination is depicted as playing an important role in Chronic Fatigue Syndrome onset.” Annals Of The New York Academy Of Science • September 2009 Infection, vaccination, and autoantibodies in chronic fatigue syndrome, cause or coincidence? Author information Ortega-Hernandez OD1, Shoenfeld Y. Department of Internal Medicine B and Research for Autoimmune Diseases Sheba Medical Center, Tel Hashomer, Israel Abstract Chronic fatigue syndrome (CFS) is a heterogeneous syndrome of unknown etiology and physiopathology. CFS patients complain about disabling fatigue, depression, difficulty with memory, and concomitant skeletal and muscular pain. Interestingly enough, there is certain overlap between CFS symptoms, autoimmune rheumatic disease, and infectious diseases. Certain neuroendocrine-immune abnormalities have also been described, and autoantibodies commonly described in some autoimmune diseases have been found in CFS patients as well. An increasing number of autoantibodies, mainly directed against other nuclear cell components, have been illustrated. Likewise, an association between some infectious agents, antibody production, and later CFS onset has been reported. Similarly, vaccination is depicted as playing an important role in CFS onset. Recently, a case report pointed toward a causal association between silicone breast linkage, hepatitis B virus vaccination, and CFS onset in a previous healthy woman. Such findings suggest that there is a likely deregulation of the immune system influenced by specific agents (infections, vaccination, and products, such as silicone). Evidence suggests that CFS is a complex disease in which several risk factors might interact to cause its full expression. Thus, although different alterations have been found in CFS patients, undoubtedly the main feature is central nervous system involvement with immunological alterations. Therefore, a new term neuro-psycho-immunology must be quoted. New studies based on this concept are needed in order to investigate syndromes, such as CFS, in which immunological alterations are thought to be associated with concomitant psychological and health disturbances. http://www.ncbi.nlm.nih.gov/pubmed/19758205 Lupus • November 2009 Transverse myelitis and vaccines: a multi-analysis Author information Agmon-Levin N1, Kivity S, Szyper-Kravitz M, Shoenfeld Y. Center for Autoimmune Diseases Sheba Medical Center Tel-Hashomer, Israel “We have disclosed 37 reported cases of transverse myelitis associated with different vaccines including those against hepatitis B virus, measles-mumps-rubella, diphtheria-tetanus-pertussis and others, given to infants, children and adults. Although vaccines harbor a major Abstract Transverse myelitis is a rare clinical syndrome in which an immune-mediated process causes neural injury to the spinal cord. The pathogenesis of transverse myelitis is mostly of an autoimmune nature, triggered by various environmental factors, including vaccination. Our aim here was to search for and analyze reported cases of transverse myelitis following vaccination. A systematic review of PubMed, EMBASE and DynaMed for all English-language journals published between 1970 and 2009 was preformed, utilizing the key words transverse myelitis, myelitis, vaccines, post-vaccination, vaccination and autoimmunity. We have disclosed 37 reported cases of transverse myelitis associated with different vaccines including those against hepatitis B virus, measles-mumps-rubella, diphtheria-tetanus-pertussis and others, given to infants, children and adults. In most of these reported cases the temporal association was between several days and 3 months, although a longer time frame of up to several years was also suggested. Although vaccines harbor a major contribution to public health in the modern era, in rare cases they may be associated with autoimmune phenomena such as transverse myelitis. The associations of different vaccines with a single autoimmune phenomenon allude to the idea that a common denominator of these vaccines, such as an adjuvant, might trigger this syndrome. http://www.ncbi.nlm.nih.gov/pubmed/19880568 contribution to public health in the modern era, in rare cases they may be associated with autoimmune phenomena such as transverse myelitis. The associations of different vaccines with a single autoimmune phenomenon allude to the idea that a common denominator of these vaccines, such as an adjuvant, might trigger this syndrome.” Lupus • November 2009 Ten cases of systemic lupus erythematosus related to hepatitis B vaccine Author information Agmon-Levin N1, Zafrir Y, Paz Z, Shilton T, Zandman-Goddard G, Shoenfeld Y. Center for Autoimmune Diseases Sheba Medical Center, Tel-Hashomer, Israel Abstract The objective of this article is to identify common and atypical features of systemic lupus erythematosus diagnosed following hepatitis B vaccination. We analyzed retrospectively the medical records of 10 systemic lupus erythematosus patients from different centers, who developed the disease following hepatitis B vaccination and determined the prevalence of different manifestations and the time association to vaccination. In this case series, 80% of the patients were female, mean age 35 +/- 9 years, of which 20% received one inoculation, 20% received two doses and 60% received all three inoculations. The mean latency period from the first hepatitis B virus immunization and onset of autoimmune symptoms was 56.3 days. All patients were diagnosed with systemic lupus erythematosus, according to the American College of Rheumatology revised criteria within 1 year. The prevalence of some systemic lupus erythematosus manifestations was typical and included involvement of the joints (100%), skin (80%), muscles (60%) and photosensitivity (30%). Other symptoms differed in this unique group of systemic lupus erythematosus patients such as low rate of kidney and hematologic involvement, and a relatively high rate of hepatitis (20%). Neurological (80%) and pulmonary (70%) symptoms were also common in this group. Data from this case-series, and previously documented cases in the literature could only show a temporal relation between hepatitis B vaccination and the appearance of systemic lupus erythematosus. Systemic lupus erythematosus related to vaccine may differ from idiopathic systemic lupus erythematosus in its clinical presentation and may resemble drug-induced systemic lupus erythematosus. Thus, physicians should be alerted to this potential association, its possible long latency period and unique presentations, and be encouraged to report and analyze these cases. http://www.ncbi.nlm.nih.gov/pubmed/19880567 “Other symptoms differed in this unique group of systemic lupus erythematosus patients such as low rate of kidney and hematologic involvement, and a relatively high rate of hepatitis (20%). Neurological (80%) and pulmonary (70%) symptoms were also common in this group. Systemic lupus erythematosus related to vaccine may differ from idiopathic systemic lupus erythematosus in its clinical presentation and may resemble drug-induced systemic lupus erythematosus.” “Owing to the adverse effects exerted by adjuvants, there is no doubt that safer adjuvants need to be developed and incorporated into future vaccines.” Lupus • November 2009 Adjuvants and autoimmunity Author information Israeli E1, Agmon-Levin N, Blank M, Shoenfeld Y. Center for Autoimmune Diseases Sheba Medical Center Tel-Hashomer, Israel Abstract Some adjuvants may exert adverse effects upon injection or, on the other hand, may not trigger a full immunological reaction. The mechanisms underlying adjuvant adverse effects are under renewed scrutiny because of the enormous implications for vaccine development. In the search for new and safer adjuvants, several new adjuvants were developed by pharmaceutical companies utilizing new immunological and chemical innovations. The ability of the immune system to recognize molecules that are broadly shared by pathogens is, in part, due to the presence of special immune receptors called toll-like receptors (TLRs) that are expressed on leukocyte membranes. The very fact that TLR activation leads to adaptive immune responses to foreign entities explains why so many adjuvants used today in vaccinations are developed to mimic TLR ligands. Alongside their supportive role, adjuvants were found to inflict by themselves an illness of autoimmune nature, defined as ‘the adjuvant diseases’. The debatable question of silicone as an adjuvant and connective tissue diseases, as well as the Gulf War syndrome and macrophagic myofaciitis which followed multiple injections of aluminium-based vaccines, are presented here. Owing to the adverse effects exerted by adjuvants, there is no doubt that safer adjuvants need to be developed and incorporated into future vaccines. Other needs in light of new vaccine technologies are adjuvants suitable for use with mucosally delivered vaccines, DNA vaccines, cancer and autoimmunity vaccines. In particular, there is demand for safe and non-toxic adjuvants able to stimulate cellular (Th1) immunity. More adjuvants were approved to date besides alum for human vaccines, including MF59 in some viral vaccines, MPL, AS04, AS01B and AS02A against viral and parasitic infections, virosomes for HBV, HPV and HAV, and cholera toxin for cholera. Perhaps future adjuvants occupying other putative receptors will be employed to bypass the TLR signaling pathway completely in order to circumvent common side effects of adjuvant-activated TLRs such as local inflammation and the general malaise felt because of the costly whole-body immune response to antigen. http://www.ncbi.nlm.nih.gov/pubmed/19880572 National Reviews In Rheumatology • November 2009 Vaccines and autoimmunity Author information Agmon-Levin N1, Paz Z, Israeli E, Shoenfeld Y. Center for Autoimmune Diseases and Department of Medicine B Sheba Medical Center, Sheba Medical Center, Tel-Hashomer 52621, Israel Abstract Vaccines have been used for over 200 years and are the most effective way of preventing the morbidity and mortality associated with infections. Like other drugs, vaccines can cause adverse events, but unlike conventional medicines, which are prescribed to people who are ill, vaccines are administered to healthy individuals, thus increasing the concern over adverse reactions. Most side effects attributed to vaccines are mild, acute and transient; however, rare reactions such as hypersensitivity, induction of infection, and autoimmunity do occur and can be severe and even fatal. The rarity and subacute presentation of post-vaccination autoimmune phenomena means that ascertaining causality between these events can be difficult. Moreover, the latency period between vaccination and autoimmunity ranges from days to years. In this article, on the basis of published evidence and our own experience, we discuss the various aspects of the causal and temporal interactions between vaccines and autoimmune phenomena, as well as the possible mechanisms by which different components of vaccines might induce autoimmunity. http://www.ncbi.nlm.nih.gov/pubmed/19865091 “Most side effects attributed to vaccines are mild, acute and transient; however, rare reactions such as hypersensitivity, induction of infection, and autoimmunity do occur and can be severe and even fatal. Moreover, the latency period between vaccination and autoimmunity ranges from days to years.” Lupus • November 2009 Vaccination of healthy subjects and autoantibodies: from mice through dogs to humans Author information Toplak N1, Avcin T. 1. Department of Allergology Rheumatology and Clinical Immunology University Children’s Hospital University Medical Centre Ljubljana, Slovenia natasa.toplak@kclj.si Abstract Vaccination against pathogenic microorganisms is one of the major achievements of modern medicine, but due to an increasing number of reports of adverse reactions the vaccination procedure has induced also considerable debate. It is well known that certain infections are involved in triggering the production of autoantibodies, which could lead to autoimmune adverse reactions in genetically predisposed subjects. Based on these findings it was assumed that vaccinations might induce similar autoimmune reactions. At present there is no clear-cut evidence that vaccinations are associated with overt autoimmune diseases but it has been demonstrated that in genetically predisposed persons vaccination can trigger the production of autoantibodies and autoimmune adverse reactions. The first studies investigating the production of autoantibodies following vaccination were done in dogs and mice. Several studies investigated the production of autoantibodies following vaccination in patients with autoimmune diseases, but there are only limited data on the autoimmune responses after vaccinations in apparently healthy humans. This review summarizes current evidence on the vaccination-induced autoantibodies in apparently healthy subjects including studies in animals and humans. http://www.ncbi.nlm.nih.gov/pubmed/?term=19880566 “due to an increasing number of reports of adverse reactions the vaccination procedure has induced also considerable debate ... it has been demonstrated that in genetically predisposed persons vaccination can trigger the production of autoantibodies and autoimmune adverse reactions.” Lupus • November 2009 Vaccines as a trigger for myopathies Author information Orbach H1, Tanay A. Department of Medicine B Wolfson Medical Center, Holon, Israel orbach@wolfson.health.gov.il Abstract Vaccines are considered to be among the greatest medical discoveries, credited with the virtual eradication of some diseases and the consequent improved survival and quality of life of the at-risk population. With that, vaccines are among the environmental factors implicated as triggers for the development of inflammatory myopathies. The sporadic reports on vaccine-induced inflammatory myopathies include cases of hepatitis B virus, bacillus Calmette-Guérin, tetanus, influenza, smallpox, polio, diphtheria, diphtheria-pertussis-tetanus, combination of diphtheria with scarlet fever and diphtheria-pertussis-tetanus with polio vaccines. However, a significant increase in the incidence of dermatomyositis or polymyositis after any massive vaccination campaign has not been reported in the literature. In study patients with inflammatory myopathies, no recent immunization was recorded in any of the patients. Moreover, after the 1976 mass flu vaccination, no increase in the incidence of inflammatory myopathies was observed. Although rare, macrophagic myofasciitis has been reported following vaccination and is attributed to the aluminium hydroxide used as an adjuvant in some vaccines. Prospective multicenter studies are needed to identify potential environmental factors, including vaccines, as potential triggers for inflammatory myopathies. http://www.ncbi.nlm.nih.gov/pubmed/19880571 “... macrophagic myofasciitis has been reported following vaccination and is attributed to the aluminium hydroxide used as an adjuvant in some vaccines.” PLoS One • December 2009 Self-organized criticality theory of autoimmunity Author information Tsumiyama K1, Miyazaki Y, Shiozawa S. Department of Biophysics Kobe University Graduate School of Health Science Kobe, Japan Abstract BACKGROUND The cause of autoimmunity, which is unknown, is investigated from a different angle, i.e., the defect in immune ‘system’, to explain the cause of autoimmunity. METHODOLOGY/PRINCIPAL FINDINGS Repeated immunization with antigen causes systemic autoimmunity in mice otherwise not prone to spontaneous autoimmune diseases. Overstimulation of CD4(+) T cells led to the development of autoantibody-inducing CD4(+) T (aiCD4(+) T) cell which had undergone T cell receptor (TCR) revision and was capable of inducing autoantibodies. The aiCD4(+) T cell was induced by de novo TCR revision but not by cross-reaction, and subsequently overstimulated CD8(+) T cells, driving them to become antigen-specific cytotoxic T lymphocytes (CTL). These CTLs could be further matured by antigen cross-presentation, after which they caused autoimmune tissue injury akin to systemic lupus erythematosus (SLE). CONCLUSIONS/SIGNIFICANCE Systemic autoimmunity appears to be the inevitable consequence of overstimulating the host’s immune ‘system’ by repeated immunization with antigen, to the levels that surpass system’s self-organized criticality. http://www.ncbi.nlm.nih.gov/pubmed/20046868 “Systemic autoimmunity appears to be the inevitable consequence of over-stimulating the host’s immune ‘system’ by repeated immunization with antigen, to the levels that surpass system’s self-organized criticality.” Infection, Genetics And Evolution • January 2010 Bordetella pertussis and vaccination: the persistence of a genetically monomorphic pathogen Author information Mooi FR. Lab for Infectious Diseases and Screening Netherlands Centre for Infectious Diseases Control Natl Institute for Public Health and the Environment RIVM, PO Box 1, 3720 BA Bilthoven, Netherlands frits.mooi@rivm.nl Abstract Before childhood vaccination was introduced in the 1950s, pertussis or whooping cough was a major cause of infant death worldwide. Widespread vaccination of children was successful in significantly reducing morbidity and mortality. However, despite vaccination, pertussis has persisted and, in the 1990s, resurged in a number of countries with highly vaccinated populations. Indeed, pertussis has become the most prevalent vaccinepreventable disease in developed countries with estimated infection frequencies of 1-6%. Recently vaccinated children are well protected against pertussis disease and its increase is mainly seen in adolescents and adults in which disease symptoms are often mild. The etiologic agent of pertussis, Bordetella pertussis, is extremely monomorphic and its ability to persist in the face of intensive vaccination is intriguing. Numerous studies have shown that B. pertussis populations changed after the introduction of vaccination suggesting adaptation. These adaptations did not involve the acquisition of novel genes but small genetic changes, mainly SNPs, and occurred in successive steps in a period of 40 years. The earliest adaptations resulted in antigenic divergence with vaccine strains. More recently, strains emerged with increased pertussis toxin (Ptx) production. Here I argue that the resurgence of pertussis is the compound effect of pathogen adaptation and waning immunity. I propose that the removal by vaccination of naïve infants as the major source for transmission was the crucial event which has driven the changes in B. pertussis populations. This has selected for strains which are more efficiently transmitted by primed hosts in which immunity has waned. The adaptation of B. pertussis to primed hosts involved delaying an effective immune response by antigenic divergence with vaccine strains and by increasing immune suppression through higher levels of Ptx production. Higher levels of Ptx may also benefit transmission by enhancing clinical symptoms. The study of B. pertussis populations has not only increased our understanding of pathogen evolution, but also suggests way to improve pertussis vaccines, underlining the public health significance of population-based studies of pathogens. http://www.ncbi.nlm.nih.gov/pubmed/19879977 “despite vaccination, pertussis has persisted and, in the 1990s, resurged in a number of countries with highly vaccinated populations. Here I argue that the resurgence of pertussis is the compound effect of pathogen adaptation and waning immunity.” [resurgence is not a result of the unvaccinated] Medical Hypotheses • January 2010 Revisiting the possibility of serious adverse events from the whole cell pertussis vaccine: were metabolically vulnerable children at risk? Author information Wilson K1, Potter B, Manuel D, Keelan J, Chakraborty P. Department of Medicine, Ottawa Hospital Research Institute University of Ottawa, Ottawa, Canada kwilson@ohri.ca Abstract In the early 1980’s concerns about the safety of the whole cell pertussis vaccine in the United States resulted in declining vaccination rates and the withdrawal of multiple vaccine providers from the market. While the possibility of inflammation and febrile reactions to the vaccine were acknowledged by public health authorities, parents also claimed the vaccine was associated with sudden infant death syndrome and encephalopathy. Epidemiological studies examining this question, however, consistently failed to identify an association. We argue that these reactions may have occurred in metabolically vulnerable children, specifically those with defects in fatty acid oxidation. In these children the combination of anorexia and fever that could be caused by the vaccine may have resulted in hypoglycemic episodes and possibly death. We believe that this association was not detected because these conditions were not recognized at the time and because these conditions are uncommon. Nevertheless, at a population level, enough events could have occurred to cause concern amongst parents. http://www.ncbi.nlm.nih.gov/pubmed/19660877 “We argue that these reactions may have occurred in metabolically vulnerable children, specifically those with defects in fatty acid oxidation. In these children the combination of anorexia and fever that could be caused by the vaccine may have resulted in hypoglycemic episodes and possibly death. We believe that this association was not detected because these conditions were not recognized at the time and because these conditions are uncommon. Nevertheless, at a population level, enough events could have occurred to cause concern amongst parents.” Pediatrics, Volume 125 / Issue 2 • February 2010 Sibling Transmission of Vaccine-Derived Rotavirus (RotaTeq) Associated With Rotavirus Gastroenteritis Daniel C. Payne, Kathryn M. Edwards, Michael D. Bowen, Erin Keckley, Jody Peters, Mathew D. Esona, Elizabeth N. Teel, Diane Kent, Umesh D. Parashar, Jon R. Gentsch “Although rotavirus vaccines are known to be shed in stools, transmission of vaccine-derived virus to unvaccinated contacts resulting in symptomatic rotavirus gastroenteritis has not been reported to our knowledge. Abstract Although rotavirus vaccines are known to be shed in stools, transmission of vaccine-derived virus to unvaccinated contacts resulting in symptomatic rotavirus gastroenteritis has not been reported to our knowledge. We document here the occurrence of vaccine-derived rotavirus (RotaTeq [Merck and Co, Whitehouse Station, NJ]) transmission from a vaccinated infant to an older, unvaccinated sibling, resulting in symptomatic rotavirus gastroenteritis that required emergency department care. Results of our investigation suggest that reassortment between vaccine component strains of genotypes P7[5]G1 and P1A[8]G6 occurred during replication either in the vaccinated infant or in the older sibling, raising the possibility that this reassortment may have increased the virulence of the vaccine-derived virus. Both children remain healthy 11 months after this event and are without underlying medical conditions. http://pediatrics.aappublications.org/content/125/2/e438 We document here the occurrence of vaccine-derived rotavirus (RotaTeq, Merck and Co, Whitehouse Station, NJ) transmission from a vaccinated infant to an older, unvaccinated sibling, resulting in symptomatic rotavirus gastroenteritis that required emergency department care.” Discovery Medicine • February 2010 Vaccines and autoimmune diseases of the adult Author information Orbach H1, Agmon-Levin N, Zandman-Goddard G. Department of Medicine B Wolfson Medical Center Holon, Israel Abstract Infectious agents contribute to the environmental factors involved in the development of autoimmune diseases possibly through molecular mimicry mechanisms. Hence, it is feasible that vaccinations may also contribute to the mosaic of autoimmunity. Evidence for the association of vaccinations and the development of these diseases is presented in this review. Infrequently reported post-vaccination autoimmune diseases include systemic lupus erythematosus, rheumatoid arthritis, inflammatory myopathies, multiple sclerosis, Guillain-Barré syndrome, and vasculitis. In addition, we will discuss macrophagic myofasciitis, aluminum containing vaccines, and the recent evidence for autoimmunity following the use of human papillomavirus vaccine. “Hence, it is feasible that vaccinations may also contribute to the mosaic of autoimmunity. Evidence for the association of vaccinations and the development of these diseases is presented in this review. In addition, we will discuss macrophagic myofasciitis, aluminum containing vaccines, and the recent evidence for autoimmunity following the use of human papillomavirus vaccine.” http://www.ncbi.nlm.nih.gov/pubmed/20193633 Full Report http://www.discoverymedicine.com/Hedi-Orbach/2010/02/04/vaccines-and-autoimmune-diseases-of-the-adult/ Discovery Medicine • February 2010 Vaccines and Autoimmune Diseases of the Adult Author: Hedi Orbach Specialty: Immunology, Rheumatology, Microbiology, Infectious Diseases Institution: Department of Medicine B, Wolfson Medical Center Author: Nancy Agmon-Levin Specialty: Immunology, Rheumatology, Microbiology, Infectious Diseases Institution: Center for Autoimmune Diseases. Sheba Medical Center Author: Gisele Zandman-Goddard Specialty: Immunology, Rheumatology, Microbiology, Infectious Diseases Institution: Department of Medicine C, Wolfson Medical Center Abstract Infectious agents contribute to the environmental factors involved in the development of autoimmune diseases possibly through molecular mimicry mechanisms. Hence, it is feasible that vaccinations may also contribute to the mosaic of autoimmunity. Evidence for the association of vaccinations and the development of these diseases is presented in this review. Infrequently reported post-vaccination autoimmune diseases include systemic lupus erythematosus, rheumatoid arthritis, inflammatory myopathies, multiple sclerosis, Guillain-Barré syndrome, and vasculitis. In addition, we will discuss macrophagic myofasciitis, aluminum containing vaccines, and the recent evidence for autoimmunity following human papilloma virus vaccine. Introduction Systemic and organ-specific autoimmune diseases are known to develop following infectious triggers. Recently we have suggested that certain autoimmune diseases like systemic lupus erythematosus (SLE) may result due to specific viral agents. Furthermore, the spectrum of disease may be influenced by a certain microbial agent in the genetically predisposed individual (Zandman-Goddard et al., 2009). Vaccines are a prototypic source for natural immune stimulation, but may be involved in pathogenic disease in the setting of aberrant immune system function. Possibly, the burden on the immune system resulting from simultaneous multiple vaccines and even the different types of vaccines may also be an overwhelming challenge in the autoimmune prone individual (Shoenfeld et al., 2008). In this review, we discuss the evidence for the development of autoimmune diseases following infections and vaccinations. While vaccinations are generally safe, warranted and have virtually eradicated endemic diseases and probably lessened morbidity and mortality, a question arises regarding the evaluation of possible autoimmune phenomena in vaccinated individuals. Reported post-vaccination autoimmune diseases in the adult include SLE, rheumatoid arthritis (RA), inflammatory myopathies, multiple sclerosis (MS), Guillain-Barré syndrome (GBS), and vasculitis. Evidence for the association of vaccinations and the development of these diseases is presented in this review. In addition, we will discuss macrophagic myofasciitis, post aluminum containing vaccines and the recent support for autoimmunity following human papilloma virus vaccine. http://www.discoverymedicine.com/Hedi-Orbach/2010/02/04/vaccines-and-autoimmune-diseases-of-the-adult/ “Vaccines are a prototypic source for natural immune stimulation, but may be involved in pathogenic disease in the setting of aberrant immune system function. Possibly, the burden on the immune system resulting from simultaneous multiple vaccines and even the different types of vaccines may also be an overwhelming challenge in the autoimmune prone individual (Shoenfeld et al., 2008). Reported post-vaccination autoimmune diseases in the adult include SLE, rheumatoid arthritis (RA), inflammatory myopathies, multiple sclerosis (MS), Guillain-Barré syndrome (GBS), and vasculitis. Evidence for the association of vaccinations and the development of these diseases is presented in this review. In addition, we will discuss macrophagic myofasciitis, post aluminum containing vaccines and the recent support for autoimmunity following human papilloma virus vaccine.” BMJ • March 2010 Effect of revaccination with BCG in early childhood on mortality: randomised trial in Guinea-Bissau Adam Edvin Roth, clinician,1,2 Christine Stabell Benn, senior researcher,3 Henrik Ravn, senior statistician,3 Amabelia Rodrigues, research director,1 Ida Maria Lisse, senior registrar,4 Maria Yazdanbakhsh, professor,5 Hilton Whittle, professor,6 and Peter Aaby, professor1,3 1. Bandim Health Project, Indepth Network, Apartado 861, Bissau, Guinea-Bissau 2. Department of Medical Microbiology, Lund University, 205 02 Malmö, Sweden 3. Bandim Health Project, Danish Epidemiology Science Centre, Statens Serum Institut, Artillerivej 5, 2300 Copenhagen S, Denmark 4. Department of Pathology, Herlev University Hospital, 2730 Herlev, Denmark 5. Department of Parasitology, Leiden University, Netherlands 6. MRC Laboratories, Fajara, POB 273, Gambia Abstract Objective To determine whether BCG revaccination at 19 months of age reduces overall child mortality. Design Randomised trial, with follow-up to age 5. Setting A health project in Bissau, Guinea-Bissau, which maintains a health and demographic surveillance system in an urban area with 90,000 inhabitants. Participants 2871 children aged 19 months to 5 years with low or no reactivity to tuberculin and who were not severely sick on the day of enrolment. Intervention BCG vaccination or no vaccination (control). Main outcome measure Hazard ratios for mortality. Results 77 children died during follow-up. Compared with controls, the BCG revaccinated children had a hazard ratio of 1.20 (95% confidence interval 0.77 to 1.89). Two hundred and fifty children were admitted to hospital for the first time between enrolment and the end of the study, with an incidence rate ratio for BCG revaccinated children versus controls of 1.04 (0.81 to 1.33). The trial was stopped prematurely because of a cluster of deaths in the BCG arm of the study. This increase in mortality occurred at a time when many children had received missing vaccinations or vitamin A or iron supplementation; the hazard ratio for BCG revaccinated children compared with controls was 2.69 (1.05 to 6.88) in the period after these campaigns. Throughout the trial, the effect of BCG revaccination on mortality was significantly different (P=0.006) in children who had received diphtheria-tetanus-pertussis (DTP) booster vaccination before enrolment (hazard ratio 0.36, 0.13 to 0.99) and children who had not received the booster before enrolment (1.78, 1.04 to 3.04). Conclusions There was no overall beneficial effect of being revaccinated with BCG. The effect of BCG revaccination on mortality might depend on other health interventions. “77 of 2871 children died during follow-up” http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2839082/ “77 children died during follow-up. Two hundred and fifty children were admitted to hospital for the first time. There was no overall beneficial effect of being revaccinated with BCG. ” Cutaneous And Ocular Toxicology • March 2010 Hepatitis B vaccine and uveitis: an emerging hypothesis suggested by review of 32 case reports Author information Fraunfelder FW1, Suhler EB, Fraunfelder FT. Casey Eye Institute Portland, Oregon 97239, USA fraunfel@ohsu.edu Abstract OBJECTIVE To report a possible association between hepatitis B vaccine and uveitis. METHODS Spontaneous reports from the National Registry of Drug-Induced Ocular Side Effects, the World Health Organization, and the Food and Drug Administration were collected on hepatitis B vaccine associated with uveitis between 1982 and 2009. In addition, we performed a Medline literature search using the keywords of uveitis, iritis, or vitritis, in combination with vaccines and hepatitis B vaccine. Data garnered from the spontaneous reports included age, gender, adverse drug reaction, temporal association of uveitis with vaccine doses, concomitant drugs, other systemic disease, recovery, and recurrence after repeat dosage. RESULTS Thirty-two case reports of uveitis occurring after hepatitis B vaccine were reported to the spontaneous reporting databases. The mean age of the patients was 29 years (1-57 years), with 8 male and 24 female patients. The mean number of days until uveitis was reported after vaccination was 3 days (1-15 days). The uveitis was reported to occur after the first vaccination in 15 patients, after the second vaccination in 3 patients, and after the third vaccination in 3 patients; the duration of time to occurrence of uveitis was not reported for 9 patients. One patient had recurrent uveitis after both the second and third doses of vaccine. One patient had recurrent uveitis after the first and second doses of vaccine. CONCLUSION Hepatitis B vaccine may have a possible association with the development of uveitis in some patients. Immune complex deposition and adjuvant effects are potential pathogenic mechanisms. http://www.ncbi.nlm.nih.gov/pubmed/?term=19947819 “Hepatitis B vaccine may have a possible association with the development of uveitis in some patients. Immune complex deposition and adjuvant effects are potential pathogenic mechanisms.” Cell Biology And Toxicology • April 2010 Induction of metallothionein in mouse cerebellum and cerebrum with low-dose thimerosal injection Author information Minami T1, Miyata E, Sakamoto Y, Yamazaki H, Ichida S. Department of Life Sciences Kinki University, Higashi-osaka Osaka, Japan minamita@life.kindai.ac.jp Abstract Thimerosal, an ethyl mercury compound, is used worldwide as a vaccine preservative. We previously observed that the mercury concentration in mouse brains did not increase with the clinical dose of thimerosal injection, but the concentration increased in the brain after the injection of thimerosal with lipopolysaccharide, even if a low dose of thimerosal was administered. Thimerosal may penetrate the brain, but is undetectable when a clinical dose of thimerosal is injected; therefore, the induction of metallothionein (MT) messenger RNA (mRNA) and protein was observed in the cerebellum and cerebrum of mice after thimerosal injection, as MT is an inducible protein. MT-1 mRNA was expressed at 6 and 9 h in both the cerebrum and cerebellum, but MT-1 mRNA expression in the cerebellum was three times higher than that in the cerebrum after the injection of 12 microg/kg thimerosal. MT2 mRNA was not expressed until 24 h in both organs. MT-3 mRNA was expressed in the cerebellum from 6 to 15 h after the injection, but not in the cerebrum until 24 h. MT-1 and MT-3 mRNAs were expressed in the cerebellum in a dose-dependent manner. Furthermore, MT-1 protein was detected from 6 to 72 h in the cerebellum after 12 microg/kg of thimerosal was injected and peaked at 10 h. MT-2 was detected in the cerebellum only at 10 h. In the cerebrum, little MT-1 protein was detected at 10 and 24 h, and there were no peaks of MT-2 protein in the cerebrum. In conclusion, MT-1 and MT-3 mRNAs but not MT-2 mRNA are easily expressed in the cerebellum rather than in the cerebrum by the injection of low-dose thimerosal. It is thought that the cerebellum is a sensitive organ against thimerosal. As a result of the present findings, in combination with the brain pathology observed in patients diagnosed with autism, the present study helps to support the possible biological plausibility for how low-dose exposure to mercury from thimerosal-containing vaccines may be associated with autism. http://www.ncbi.nlm.nih.gov/pubmed/19357975 “It is thought that the cerebellum is a sensitive organ against thimerosal. As a result of the present findings, in combination with the brain pathology observed in patients diagnosed with autism, the present study helps to support the possible biological plausibility for how low-dose exposure to mercury from thimerosal containing vaccines may be associated with autism.” Disability & Health Journal • April 2010 Sex differences in the evaluation and diagnosis of autism spectrum disorders among children Author information Giarelli E1, Wiggins LD, Rice CE, Levy SE, Kirby RS, Pinto-Martin J, Mandell D. University of Pennsylvania School of Nursing, Philadelphia, 19104, USA giarelli@nursing.upenn.edu Abstract BACKGROUND One of the most consistent features of the autism spectrum disorders (ASDs) is the predominance among males, with approximately four males to every female. We sought to examine sex differences among children who met case definition for ASD in a large, population-based cohort with respect to age at first developmental evaluation, age of diagnosis, influence of cognitive impairment on these outcomes, and sex-specific behavioral characteristics. METHODS We conducted a secondary analysis of data collected for a population-based study of the prevalence of ASD. The sample comprised 2,568 children born in 1994 who met the case definition of ASD as established by the Autism and Developmental Disabilities Monitoring (ADDM) Network for ASD surveillance. Children who had a history of developmental disability and behavioral features consistent with the DSM-IV-TR criteria for autistic disorder, Asperger’s disorder, and Pervasive Developmental Disorder-Not Otherwise Specified in existing evaluation records were classified as ASD cases via two paths: streamlined and nonstreamlined. Streamlined reviews were conducted if there was an ASD diagnosis documented in the records. Data were collected in 13 sites across the United States through the ADDM Network, funded by the Centers for Disease Control and Prevention. RESULTS Males constituted 81% of the sample. There were no differences by sex in average age at first evaluation or average age of diagnosis among those with an existing documented chart diagnosis of an ASD. Girls were less likely than boys to have a documented diagnosis (odds ratio [OR] = 0.76, p = .004). This analysis was adjusted for cognitive impairment status. In the logistic model, with the interaction term for sex and cognitive impairment, girls with IQ of 70 or less were less likely than boys with IQ of 70 or less to have a documented diagnosis (OR = 0.70, 95% confidence interval [CI] = 0.50-0.97, p = .035). Boys with IQ greater than 70 were less likely than boys with IQ of 70 or less to have a documented diagnosis (OR = 0.60, 95% CI = 0.49-0.74, p < .001). This finding (less likely to have a documented diagnosis) was also true for girls with IQ greater than 70 (OR = 0.45, 95% CI = 0.32-0.66, p < .001). Girls were more likely to have notations of seizure-like behavior (p < .001). Boys were more likely to have notations of hyperactivity or a short attention span and aggressive behavior (p < .01). CONCLUSIONS Girls, especially those without cognitive impairment, may be formally identified at a later age than boys. This may delay referral for early intervention. Community education efforts should alert clinicians and parents to the potential of ASDs in boys and girls. http://www.ncbi.nlm.nih.gov/pubmed/?term=21122776 “One of the most consistent features of the autism spectrum disorders (ASDs) is the predominance among males, with approximately four males to every female. We sought to examine sex differences among children who met case definition for ASD ...” PLoS One • May 2010 Oral polio vaccine influences the immune response to BCG vaccination A natural experiment Author information Sartono E1, Lisse IM, Terveer EM, van de Sande PJ, Whittle H, Fisker AB, Roth A, Aaby P, Yazdanbakhsh M, Benn CS. Department of Parasitology, Leiden University Medical Center Leiden, The Netherlands E.Sartono@lumc.nl Abstract BACKGROUND Oral polio vaccine (OPV) is recommended to be given at birth together with BCG vaccine. While we were conducting two trials including low-birth-weight (LBW) and normal-birth-weight (NBW) infants in Guinea-Bissau, OPV was not available during some periods and therefore some infants did not receive OPV at birth, but only BCG. We investigated the effect of OPV given simultaneously with BCG at birth on the immune response to BCG vaccine. “Worryingly, the results indicate that METHODS AND FINDINGS We compared the in vitro and the in vivo response to PPD in the infants who received OPV and BCG with that of infants who received BCG only. At age 6 weeks, the in vitro cytokine response to purified protein derivate (PPD) of M. Tuberculosis was reduced in LBW and NBW infants who had received OPV with BCG. In a pooled analysis receiving OPV with BCG at birth was associated with significantly lower IL-13 (p = 0.041) and IFN-gamma (p = 0.004) and a tendency for lower IL-10 (p = 0.054) in response to PPD. Furthermore, OPV was associated with reduced in vivo response to PPD at age 2 months, the prevalence ratio (PR) of having a PPD reaction being 0.75 (0.58-0.98), p = 0.033, and with a tendency for reduced likelihood of having a BCG scar (0.95 (0.91-1.00), p = 0.057)). Among children with a scar, OPV was associated with reduced scar size, the regression coefficient being -0.24 (-0.43-0.05), p = 0.012. Bacille Calmette-Guerin [BCG - tuberculosis] vaccine CONCLUSIONS This study is the first to address the consequences for the immune response to BCG of simultaneous administration with OPV. Worryingly, the results indicate that the common practice in low-income countries of administering OPV together with BCG at birth may down-regulate the response to BCG vaccine. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2873948/ the common practice in low-income countries of administering Oral polio vaccine together with at birth may down-regulate the response to Bacille Calmette-Guerin [BCG - tuberculosis] vaccine.” Medical Science Monitor • May 2010 The relative toxicity of compounds used as preservatives in vaccines and biologics Author information Geier DA1, Jordan SK, Geier MR. CoMeD, Inc., Silver Spring, MD, USA Abstract BACKGROUND In vaccines/biologics, preservatives are used to prevent microbial growth. MATERIAL/METHODS The present study examined: (1) the comparative toxicities of commonly used preservatives in US licensed vaccines to human neurons; and (2) the relative toxicity index of these compounds to human neurons in comparison to bacterial cells. RESULTS Using human neuroblastoma cells, the relative cytotoxicity of the levels of the compounds commonly used as preservative in US licensed vaccines was found to be phenol <2-phenoxyethanol < benzethonium chloride < Thimerosal. The observed relative toxicity indices (human neuroblastoma cells/bacterial cells) were 2-phenoxyethanol (4.6-fold) < phenol (12.2-fold) < Thimerosal (>330-fold). In addition, for the compounds tested, except for 2-phenoxyethanol, the concentrations necessary to induce significant killing of bacterial cells were significantly higher than those routinely present in US licensed vaccine/biological preparations. CONCLUSIONS None of the compounds commonly used as preservatives in US licensed vaccine/biological preparations can be considered an ideal preservative, and their ability to fully comply with the requirements of the US Code of Federal Regulations (CFR) for preservatives is in doubt. Future formulations of US licensed vaccines/biologics should be produced in aseptic manufacturing plants as single dose preparations, eliminating the need for preservatives and an unnecessary risk to patients. http://www.ncbi.nlm.nih.gov/pubmed/?term=20424565 “None of the compounds commonly used as preservatives in US licensed vaccine/biological preparations can be considered an ideal preservative, and their ability to fully comply with the requirements of the US Code of Federal Regulations (CFR) for preservatives is in doubt.” BMJ • June 2010 Ramifications of adverse events in children in Australia Author information Peter Collignon, infectious diseases physician and microbiologist1 Peter Doshi, program in history, anthropology, science, technology and society2 Tom Jefferson, coordinator3 1. School of Clinical Medicine, Australian National University PO Box 11, Woden, ACT 2607, Australia 2. Massachusetts Institute of Technology Cambridge, MA 02139, USA 3. Cochrane Vaccines Field, Rome, Italy peter.collignon@act.gov.au Many serious adverse reactions to this year’s seasonal influenza vaccine have occurred across Australia, and its use remains suspended in children aged 5 years and under.1 2 3 Data released on 1 June 2010 show that 1 in every 110 young children vaccinated with the CSL vaccine had a febrile seizure.3 A previous H1N1 vaccine study published earlier this year showed that a large proportion of children developed fevers after vaccination: between three and six in every 10 children under 3 years, depending on dose.4 The study was, however, underpowered to detect febrile convulsions at the current rates in Australia because it included only 162 children under 3 years. Fever is the most important risk factor for febrile convulsions. The vaccine manufacturer CSL, which sponsored the trial, and Australia’s regulatory body, the Therapeutic Goods Administration, which used these data in approving the vaccine for children, were presumably aware of these important findings.4 But the authors did not discuss the high incidence of fever associated with vaccination,4 and most data were reported without comment in the online only supplementary tables.4 The many children with adverse effects and the subsequent suspension of the vaccine challenge the assumption that regulators are ensuring the safety and efficacy of all marketed therapeutics. Influenza vaccine is said to have “an established record of safety in all age groups.”2 However, published data on the effects of vaccinating young children against influenza are comparatively few.5 Some manufacturers have even withheld data from public scrutiny amid general indifference.2 5 Last winter the likelihood that a child without risk factors would die from swine flu was less than one in a million.2 When such a high proportion of children develop moderate to severe febrile reactions to the influenza vaccine, more harm than good seems likely from vaccinating them. Report available for purchase. I accessed this report using a 14-day free trial: http://www.bmj.com/content/340/bmj.c2994.long “... the likelihood that a child without risk factors would die from swine flu was less than one in a million. When such a high proportion of children develop moderate to severe febrile reactions to the influenza vaccine, more harm than good seems likely from vaccinating them.” BMJ • June 2010 Australian government says healthy under 5s should not be given seasonal flu jab Moynihan R. http://www.ncbi.nlm.nih.gov/pubmed/20530085 Discovery Medicine • July 2010 Prophylactic HPV vaccines: current knowledge of impact on gynecologic premalignancies Author information Harper DM1, Williams KB. University of Missouri-Kansas City School of Medicine 7900 Lee’s Summit Road, Kansas City, Missouri 64139, USA diane.m.harper@gmail.com “Screening still remains the Abstract Approaches for cervical cancer prevention are changing. Screening still remains the most effective method for cervical cancer prevention. Guidelines are moving to an older group of women to be screened less frequently with combinations of technologies that include biomarkers and cytology. HPV vaccination is an appropriate option for this older group of women as well, should the woman not wish to make her decision about vaccination until 21 years of age, the age of screening. Parents making decisions about HPV vaccination for their young adolescent daughters need to be fully informed that only continued screening prevents cervical cancer. HPV vaccination reduces the possibility of their daughter having an abnormal Pap test by 10% if the vaccines have not waned by the time the young adolescent becomes sexually active. HPV vaccine efficacy must last at least 15 years to contribute to the prevention of cervical cancers. At this time, protection against cervical intraepithelial neoplasia grade 2/3 (CIN 2/3) is 5 years for Gardasil and 8.4 years for Cervarix. The value of the current protection HPV vaccines offer will be viewed differently by different women. Physicians’ ethical duties are to provide full explanation of the risks and benefits of adding HPV vaccination to the ongoing screening programs, and to support women in their personal choice for cervical cancer prevention. http://www.ncbi.nlm.nih.gov/pubmed/20670593 most effective method for cervical cancer prevention. HPV vaccination reduces the possibility of their daughter having an abnormal Pap test by 10% if the vaccines have not waned by the time the young adolescent becomes sexually active.” Reviews Of Environmental Contamination And Toxicology • July 2010 . The toxic effects of formaldehyde on the nervous system Author information Songur A1, Ozen OA, Sarsilmaz M. Department of Anatomy, School of Medicine University of Kocatepe, Afyonkarahisar, Turkey asongur55@yahoo.com Abstract Formaldehyde (FA) is found in the polluted atmosphere of cities, domestic air (e.g., paint, insulating materials, chipboard and plywood, fabrics, furniture, paper), and cigarette smoke, etc.; therefore, everyone and particularly susceptible children may be exposed to FA. FA is also widely used in industrial and medical settings and as a sterilizing agent, disinfectant, and preservative. Therefore, employees may be highly exposed to it in there settings. Of particular concern to the authors are anatomists and medical students, who can be highly exposed to formaldehyde vapor during dissection sessions. Formaldehyde is toxic over a range of doses; chances of exposure and subsequent harmful effects are increased as (room) temperature increases, because of FA’s volatility. Many studies have been conducted to evaluate the effects of FA during systemic and respiratory exposures in rats. This review compiles that literature and emphasizes the neurotoxic effects of FA on neuronal morphology, behavior, and biochemical parameters. The review includes the results of some of the authors’ work related to FA neurotoxicity, and such neurotoxic effects from FA exposure were experimentally demonstrated. Moreover, the effectiveness of some antioxidants such as melatonin, fish omega-3, and CAPE was observed in the treatment of the harmful effects of FA. Despite the harmful effects from FA exposure, it is commonly used in Turkey and elsewhere in dissection laboratories. Consequently, all anatomists must know and understand the effects of this toxic agent on organisms and the environment, and take precautions to avoid unnecessary exposure. The reviewed studies have indicated that FA has neurotoxic characteristics and systemic toxic effects. It is hypothesized that inhalation of FA, during the early postnatal period, is linked to some neurological diseases that occur in adults. Although complete prevention is impossible for laboratory workers and members of industries utilizing FA, certain precautions can be taken to decrease and/or prevent the toxic effects of FA. http://www.ncbi.nlm.nih.gov/pubmed/?term=19957118 “The reviewed studies have indicated that Formaldehyde has neurotoxic characteristics and systemic toxic effects.” Journal Of Toxicology And Environmental Health Part A • 2010 Hepatitis B vaccination of male neonates and autism diagnosis NHIS 1997-2002 Author information Gallagher CM1, Goodman MS. PhD Program in Population Health and Clinical Outcomes Research Stony Brook University Medical Center State University of New York at Stony Brook Stony Brook, New York, USA cmgallagher@notes.cc.sunysb.edu Abstract Universal hepatitis B vaccination was recommended for U.S. newborns in 1991; however, safety findings are mixed. The association between hepatitis B vaccination of male neonates and parental report of autism diagnosis was determined. This cross-sectional study used weighted probability samples obtained from National Health Interview Survey 1997-2002 data sets. Vaccination status was determined from the vaccination record. Logistic regression was used to estimate the odds for autism diagnosis associated with neonatal hepatitis B vaccination among boys age 3-17 years, born before 1999, adjusted for race, maternal education, and two-parent household. Boys vaccinated as neonates had threefold greater odds for autism diagnosis compared to boys never vaccinated or vaccinated after the first month of life. Non-Hispanic white boys were 64% less likely to have autism diagnosis relative to nonwhite boys. Findings suggest that U.S. male neonates vaccinated with the hepatitis B vaccine prior to 1999 (from vaccination record) had a threefold higher risk for parental report of autism diagnosis compared to boys not vaccinated as neonates during that same time period. Nonwhite boys bore a greater risk. http://www.ncbi.nlm.nih.gov/pubmed/?term=21058170 “Findings suggest that U.S. male neonates vaccinated with the hepatitis B vaccine prior to 1999 (from vaccination record) had a threefold higher risk for parental report of autism diagnosis compared to boys not vaccinated as neonates during that same time period. Nonwhite boys bore a greater risk.” Acta Neurobiologiea Experimentalis • 2010 Influence of pediatric vaccines on amygdala growth and opioid ligand binding in rhesus macaque infants: A pilot study Author information Hewitson L1, Lopresti BJ, Stott C, Mason NS, Tomko J. 1Department of Obstetrics and Gynecology University of Pittsburgh School of Medicine Pittsburgh, PA, USA lch1@pitt.edu Abstract This longitudinal, case-control pilot study examined amygdala growth in rhesus macaque infants receiving the complete US childhood vaccine schedule (1994-1999). Longitudinal structural and functional neuroimaging was undertaken to examine central effects of the vaccine regimen on the developing brain. Vaccine-exposed and saline-injected control infants underwent MRI and PET imaging at approximately 4 and 6 months of age, representing two specific timeframes within the vaccination schedule. Volumetric analyses showed that exposed animals did not undergo the maturational changes over time in amygdala volume that was observed in unexposed animals. After controlling for left amygdala volume, the binding of the opioid antagonist [(11)C]diprenorphine (DPN) in exposed animals remained relatively constant over time, compared with unexposed animals, in which a significant decrease in [(11)C]DPN binding occurred. These results suggest that maturational changes in amygdala volume and the binding capacity of [(11)C]DPN in the amygdala was significantly altered in infant macaques receiving the vaccine schedule. The macaque infant is a relevant animal model in which to investigate specific environmental exposures and structural/functional neuroimaging during neurodevelopment. http://www.ncbi.nlm.nih.gov/pubmed/?term=20628439 “This longitudinal, case-control pilot study examined amygdala growth in rhesus macaque infants receiving the complete US childhood vaccine schedule (1994-1999). These results suggest that maturational changes in amygdala volume and the binding capacity of [(11)C]DPN in the amygdala was significantly altered in infant macaques receiving the vaccine schedule.” “The decrease in the collapse pressure of the monolayer film caused by coated nanoparticles, in vitro, was associated with an acute pulmonary toxicity in vivo.” American Association Of Pharmaceutical Sciences • September 2010 Pulmonary Toxicity of Polysorbate-80-coated Inhalable Nanoparticles; In vitro and In vivo Evaluation M. H. D. Kamal Al-Hallak, Shirzad Azarmi, Chris Sun, Patrick Lai, Elmar J. Prenner, Wilson H. Roa, and Raimar Löbenberg Faculty of Pharmacy and Pharmaceutical Sciences, 3126 Dentistry/Pharmacy Centre University of Alberta, Edmonton, Alberta T6G 2N8 Canada Faculty of Pharmacy and Pharmaceutical Sciences, Damascus University, Damascus, Syria Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran Department of Biological Sciences, University of Calgary, Calgary, Alberta Canada Cross Cancer Institute, University of Alberta, Edmonton, Alberta Canada CONCLUSION The presented in vitro model for studying the surface pressure-area isotherms is an early screening tool to assess the biophysical compatibility of selected drug carriers with lung surfactant films. The decrease in the collapse pressure of the monolayer film caused by coated NPs, in vitro, was associated with an acute pulmonary toxicity in vivo. This in vivo toxicity was not observed when uncoated nanoparticles were used. Therefore, the dosage from toxicity of colloidal carriers intended for pulmonary delivery is mainly determined by their final composition rather than their individual components. More investigations are required to set different cut-off points for the collapse pressure to correlate them with different stages of pulomary toxicity in vivo. The outcomes of this study should not be generalized for all surfactants or bi-block polymers. Other surfactants with different hydrophilic-lipophilic properties might interact differently with lung surfactant films. This method may be useful to establish upper deposition limits for inhalable dry powders. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2895437/ Proceedings Of The National Academy Of Sciences Of The USA • September 2010 Triton X-100 concentration effects on membrane permeability of a single HeLa cell by scanning electrochemical microscopy (SECM) Author information Koley D1, Bard AJ. Center for Electrochemistry Department of Chemistry and Biochemistry University of Texas at Austin 1 University Station, A5300 Austin, TX 78712-0165, USA “Permeability of the cell membrane to the otherwise impermeable, highly charged Abstract Changes in HeLa cell morphology, membrane permeability, and viability caused by the presence of Triton X-100 (TX100), a nonionic surfactant, were studied by scanning electrochemical microscopy (SECM). No change in membrane permeability was found at concentrations of 0.15 mM or lower during an experimental period of 30 to 60 min. Permeability of the cell membrane to the otherwise impermeable, highly charged hydrophilic molecule ferrocyanide was seen starting at concentrations of TX100 of about 0.17 mM. This concentration level of TX100 did not affect cell viability. Based on a simulation model, the membrane permeability for ferrocyanide molecules passing though the live cell membrane was 6.5 ± 2.0 × 10(-6) m/s. Cells underwent irreversible permeabilization of the membrane and structural collapse when the TX100 concentration reached the critical micelle concentration (CMC), in the range of 0.19 to 0.20 mM. The impermeability of ferrocyanide molecules in the absence of surfactant was also used to determine the height and diameter of a single living cell with the aid of the approach curve and probe scan methods in SECM. http://www.ncbi.nlm.nih.gov/pubmed/?term=20837548 hydrophilic molecule ferrocyanide was seen starting at concentrations of TX100 of about 0.17 mM. Cells underwent irreversible permeabilization of the membrane and structural collapse when the TX100 concentration reached the critical micelle concentration (CMC), in the range of 0.19 to 0.20 mM.” Proceedings Of The National Academy Of Science • September 2010 Triton X-100 concentration effects on membrane permeability of a single HeLa cell by scanning electrochemical microscopy (SECM) Dipankar Koley and Allen J. Bard1 Center for Electrochemistry Department of Chemistry and Biochemistry University of Texas at Austin, 1 University Station A5300, Austin, TX 78712-0165 ABSTRACT Changes in HeLa cell morphology, membrane permeability, and viability caused by the presence of Triton X-100 (TX100), a nonionic surfactant, were studied by scanning electrochemical microscopy (SECM). No change in membrane permeability was found at concentrations of 0.15 mM or lower during an experimental period of 30 to 60 min. Permeability of the cell membrane to the otherwise impermeable, highly charged hydrophilic molecule ferrocyanide was seen starting at concentrations of TX100 of about 0.17 mM. This concentration level of TX100 did not affect cell viability. Based on a simulation model, the membrane permeability for ferrocyanide molecules passing though the live cell membrane was 6.5 ± 2.0 × 10-6 m/ s. Cells underwent irreversible permeabilization of the membrane and structural collapse when the TX100 concentration reached the critical micelle concentration (CMC), in the range of 0.19 to 0.20 mM. The impermeability of ferrocyanide molecules in the absence of surfactant was also used to determine the height and diameter of a single living cell with the aid of the approach curve and probe scan methods in SECM. DISCUSSION When the concentration of TX100 is below the CMC range (i.e. 0.17 mM and less) the surfactant may act as a permeabilizing agent depending on the dose and duration of exposure to cells. This is a good range for transfection of the cell with an added agent, but prolonged exposure to cells even at these low concentrations can lead to some cell death. When concentrations of TX100 in the CMC range, > 0.18 mM, are used, the cell membrane disintegrated causing a collapse of the entire cell structure and cell death within a few minutes. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2947864/ “When concentrations of TX100 in the CMC range, > 0.18 mM, are used, the cell membrane disintegrated causing a collapse of the entire cell structure and cell death within a few minutes.” Yao Xue Xue Bao • Acta Pharmaceutica Sinica • October 2010 Polysorbate-80 modified neurotoxin nanoparticle with its transport and cytotoxicity against blood-brain barrier Author information Zhao YM1, Xia AX, Wei YH, Ruan YP, Li FZ. College of Pharmaceutical Science Zhejiang Chinese Medical University Hangzhou 310053, China Abstract This study was aimed at the transport across blood-brain barrier (BBB) of polysorbate-80 modified neurotoxin loaded polybutylcyanoacrylate nanoparticle (P-80-NT-NP) and its cytotoxicity. An in vitro model of BBB using rat brain microvascular endothelial cells (rBMECs) was established. The cytotoxicity of P-80-NTNP was measured by the MTT assays, where neurotoxin (NT), nanoparticle (NP), neurotoxin nanoparticle (NT-NP) as control, and the permeability of P-80-NT-NP was determined by using of Millicell insert coculture with rBMECs and fluorescence spectrophotometry. MTT results showed that NT, NP, NT-NP and P80-NT-NP were avirulent to rBMECs when the concentration of NT was lower than 200 ng x mL(-1). But the cytotoxicity of NP, NT-NP and P-80-NT-NP would be augmented accordingly as concentration increased (P < 0.01), causing obvious reductions of cell survival rate, with no significant difference between them (P > 0.05). When the concentration of NT was 150 ng x mL(-1), the permeability on rBMECs of P-80-NT-NP and NT-NP were both significantly higher than that of NT (P < 0.01), and the permeability of P-80-NT-NP was greater than that of NT-NP (P < 0.05). In conclusion, polysorbate-80 modified neurotoxin nanoparticles can transport across the BBB, while concentration of NT is greater than 200 ng x mL(-1), P-80-NT-NP has a little cytotoxicity against rBMECs. http://www.ncbi.nlm.nih.gov/pubmed/21348312 “... polysorbate-80 modified neurotoxin nanoparticles can transport across the Blood Brain Barrier ...” Vaccine • January 2011 Diphtheria-tetanus-pertussis vaccine administered simultaneously with measles vaccine is associated with increased morbidity and poor growth in girls A randomised trial from Guinea-Bissau Author information Agergaard J1, Nante E, Poulstrup G, Nielsen J, Flanagan KL, Østergaard L, Benn CS, Aaby P. Bandim Health Project, Indepth Network, Apartado 861, 1004 Bissau Codex, Guinea-Bissau heja@dadlnet.dk Abstract BACKGROUND Combined vaccination with diphtheria-tetanus-pertussis (DTP) and measles vaccine (MV) has been associated with increased mortality in observational studies. Among children missing MV and a dose of DTP and oral polio vaccine (OPV), we conducted a randomised trial of providing MV+DTP+OPV simultaneously, as currently recommended, or MV+OPV only, and examined the effect on morbidity and growth. We hypothesised that the MV+OPV group would experience less morbidity and grow better. Due to previous observations of sex differences in the non-specific effects of vaccinations, we analysed all data stratified by sex. METHODS At the Bandim Health Project in Guinea-Bissau, 568 children who were due to receive MV and who were missing either DTP3 or DTP booster were enrolled in the study. A subgroup of 332 children was followed intensively to register adverse events and infections in the first month after vaccination. A subgroup of 276 children was followed every third month for a year to monitor growth. All children were followed for one year for infectious diseases, consultations, and hospitalisations. RESULTS As expected, adverse events were more common in the MV+DTP+OPV group; diarrhoea and use of medication were increased among girls but not among boys (both p=0.02, test of interaction between DTP and sex). Febrile disease with vesicular rash, as well as consultations and hospitalisations tended to be more common in the MV+DTP+OPV group than in the MV+OPV group; the hazard ratio (HR) for febrile disease with vesicular rash was 1.86 (1.00; 3.47). The strongest tendencies for more febrile diseases and hospitalisations in the MV+DTP+OPV group were found in girls. Overall, growth did not differ by randomisation group. However, results differed by sex. Girls in the MV+DTP+OPV group had a consistent pattern of worse z-scores for weight, height, and mid-upper-arm-circumference (MUAC) than girls in the MV+OPV group. The effect was opposite for boys, with boys in the MV+OPV group faring worse than those in the MV+DTP+OPV group, the interaction test for sex and DTP being significant for weight at 6 and 9 months, for MUAC at 12 months and for weight-forheight at 3 and 9 months after randomisation. CONCLUSION This is the first randomised trial of the non-specific effects of DTP and supports that these effects may be sexdifferential and of clinical and anthropometric importance. Combined vaccination with DTP+MV+OPV may be detrimental for girls. http://www.ncbi.nlm.nih.gov/pubmed/21093496 “This is the first randomised trial of the non-specific effects of DTP and supports that these effects may be sex-differential and of clinical and anthropometric importance. Combined vaccination with DTP+MV+OPV may be detrimental for girls.” Nucleic Acids Research • January 2011 Protegen: a web-based protective antigen database and analysis system Author information Yang B1, Sayers S, Xiang Z, He Y. Unit for Laboratory Animal Medicine University of Michigan Medical School Center for Computational Medicine and Bioinformatics University of Michigan, Ann Arbor, MI 48109 Abstract Protective antigens are specifically targeted by the acquired immune response of the host and are able to induce protection in the host against infectious and non-infectious diseases. Protective antigens play important roles in vaccine development, as biological markers for disease diagnosis, and for analysis of fundamental host immunity against diseases. Protegen is a webbased central database and analysis system that curates, stores and analyzes protective antigens. Basic antigen information and experimental evidence are curated from peer-reviewed articles. More detailed gene/protein information (e.g. DNA and protein sequences, and COG classification) are automatically extracted from existing databases using internally developed scripts. Bioinformatics programs are also applied to compute different antigen features, such as protein weight and pI, and subcellular localizations of bacterial proteins. Presently, 590 protective antigens have been curated against over 100 infectious diseases caused by pathogens and non-infectious diseases (including cancers and allergies). A user-friendly web query and visualization interface is developed for interactive protective antigen search. A customized BLAST sequence similarity search is also developed for analysis of new sequences provided by the users. To support data exchange, the information of protective antigens is stored in the Vaccine Ontology (VO) in OWL format and can also be exported to FASTA and Excel files. Protegen is publically available at http://www.violinet.org/protegen. Full Report http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3013795/ “Protegen is a web-based central database and analysis system that curates, stores and analyzes protective antigens. Presently, 590 protective antigens have been curated against over 100 infectious diseases caused by pathogens and non-infectious diseases (including cancers and allergies).” Journal Of Autoimmunity • February 2011 Autoimmune or auto-inflammatory syndrome induced by adjuvants (ASIA): old truths and a new syndrome? Author information Meroni PL1. Division of Rheumatology, Istituto G. Pini, Milan, Italy pierluigi.meroni@unimi.it Abstract There has been considerable interest in the role of environmental factors and the induction of autoimmunity and the ways by which they facilitate loss of tolerance. Clearly both genetic and environmental factors are incriminated, as evidenced by the lack of concordance in identical twins and the relatively recent identification of the shared epitope in rheumatoid arthritis. In this issue a new syndrome called ‘Asia’-autoimmune/auto-inflammatory syndrome induced by adjuvants has been proposed. It is an intriguing issue and one that is likely to be provocative and lead to further biologic and molecular investigations. http://www.ncbi.nlm.nih.gov/pubmed/21051205 “In this issue a new syndrome called ‘Asia’-autoimmune/auto-inflammatory syndrome induced by adjuvants has been proposed. It is an intriguing issue and one that is likely to be provocative and lead to further biologic and molecular investigations.” Journal Of Autoimmunity • February 2011 ‘ASIA’ autoimmune/inflammatory syndrome induced by adjuvants Author information Shoenfeld Y1, Agmon-Levin N. The Zabludowicz Center for Autoimmune Diseases Department of Medicine B’ Sheba Medical Center Tel-Hashomer, Israel shoenfel@post.tau.ac.il Abstract The role of various environmental factors in the pathogenesis of immune mediated diseases is well established. Of which, factors entailing an immune adjuvant activity such as infectious agents, silicone, aluminium salts and others were associated with defined and non-defined immune mediated diseases both in animal models and in humans. In recent years, four conditions: siliconosis, the Gulf war syndrome (GWS), the macrophagic myofasciitis syndrome (MMF) and post-vaccination phenomena were linked with previous exposure to an adjuvant. Furthermore, these four diseases share a similar complex of signs and symptoms which further support a common denominator. Thus, we review herein the current data regarding the role of adjuvants in the pathogenesis of immune mediated diseases as well as the amassed data regarding each of these four conditions. Relating to the current knowledge we would like to suggest to include these comparable conditions under a common syndrome entitled ASIA, “Autoimmune (Auto-inflammatory) Syndrome Induced by Adjuvants”. http://www.ncbi.nlm.nih.gov/pubmed/20708902 “Relating to the current knowledge we would like to suggest to include these comparable conditions under a common syndrome entitled ASIA, “Autoimmune (Auto-inflammatory) Syndrome Induced by Adjuvants”.” “By means of a study including 300 unexplained sudden unexpected deaths (uSUD), a 16-fold risk increase [in death] after the 4th dose could be detected with a power of at least 90 per cent. A general 2-fold risk increase after vaccination could be detected with a power of 80 per cent.” Statistics In Medicine • March 2011 A modified self-controlled case series method to examine association between multidose vaccinations and death Author information Kuhnert R1, Hecker H, Poethko-Müller C, Schlaud M, Vennemann M, Whitaker HJ, Farrington CP. Robert Koch-Institute Division for Health of Children and Adolescents Prevention Concepts, Postfach 650261 13353 Berlin, Germany KuhnertR@rki.de Abstract The self-controlled case series method (SCCS) was developed to analyze the association between a time-varying exposure and an outcome event. We consider penta- or hexavalent vaccination as the exposure and unexplained sudden unexpected death (uSUD) as the event. The special situation of multiple exposures and a terminal event requires adaptation of the standard SCCS method. This paper proposes a new adaptation, in which observation periods are truncated according to the vaccination schedule. The new method exploits known minimum spacings between successive vaccine doses. Its advantage is that it is very much simpler to apply than the method for censored, perturbed or curtailed post-event exposures recently introduced. This paper presents a comparison of these two SCCS methods by simulation studies and an application to a real data set. In the simulation studies, the age distribution and the assumed vaccination schedule were based on real data. Only small differences between the two SCCS methods were observed, although 50 per cent of cases could not be included in the analysis with the SCCS method with truncated observation periods. By means of a study including 300 uSUD, a 16-fold risk increase after the 4th dose could be detected with a power of at least 90 per cent. A general 2-fold risk increase after vaccination could be detected with a power of 80 per cent. Reanalysis of data from cases of the German case-control study on sudden infant death (GeSID) resulted in slightly higher point estimates using the SCCS methods than the odds ratio obtained by the case-control analysis. http://www.ncbi.nlm.nih.gov/pubmed/21337361 Mutation Research • March 2011 Genotoxicity biomarkers in occupational exposure to formaldehyde the case of histopathology laboratories Author information Ladeira C1, Viegas S, Carolino E, Prista J, Gomes MC, Brito M. Escola Superior de Tecnologia da Saúde de Lisboa Instituto Politécnico de Lisboa, Portugal carina.ladeira@estesl.ipl.pt Abstract Formaldehyde, classified by the IARC as carcinogenic in humans and experimental animals, is a chemical agent that is widely used in histopathology laboratories. The exposure to this substance is epidemiologically linked to cancer and to nuclear changes detected by the cytokinesis-block micronucleus test (CBMN). This method is extensively used in molecular epidemiology, since it provides information on several biomarkers of genotoxicity, such as micronuclei (MN), which are biomarkers of chromosomes breakage or loss, nucleoplasmic bridges (NPB), common biomarkers of chromosome rearrangement, poor repair and/or telomere fusion, and nuclear buds (NBUD), biomarkers of elimination of amplified DNA. The aim of this study is to compare the frequency of genotoxicity biomarkers, provided by the CBMN assay in peripheral lymphocytes and the MN test in buccal cells, between individuals occupationally exposed and non-exposed to formaldehyde and other environmental factors, namely tobacco and alcohol consumption. The sample comprised two groups: 56 individuals occupationally exposed to formaldehyde (cases) and 85 unexposed individuals (controls), from whom both peripheral blood and exfoliated epithelial cells of the oral mucosa were collected in order to measure the genetic endpoints proposed in this study. The mean level of TWA(8h) was 0.16±0.11 ppm (