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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
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. Partial funding for this work was provided by a contract to review the recent scientific literature on health effects of aluminum between the International Aluminium Institute (IAI, www.world-aluminium.org), the Aluminium Reach Consortium (ARC, www.aluminium-reach-consortium.eu), and Risk Sciences International (RSI, www.risksciences.com), a Canadian company established in 2006 in partnership with the University of Ottawa. Additional financial support was provided by the Natural Sciences and Engineering Research Council of Canada (NSERC) to D. Krewski, who holds the NSERC Chair in Risk Science at the University of Ottawa. C.C. Willhite, N.A. Karyakina, F. Momoli, and N. Yenugadhati were compensated by RSI for their contributions to the review. I. Arnold, T. Wisniewski and R. Yokel received no compensation from RSI for their contributions to this work. The authors, whose affiliations are shown on the title page, had sole responsibility for preparation of this paper, including determining the strategy for reviewing the scientific literature summarized in this article, synthesizing the findings, and drawing conclusions. Scientists associated with IAI/ARC were given the opportunity to review and offer technical comments on the paper, prior to submission to Critical Reviews in Toxicology. I. Arnold serves as a consultant to the International Aluminium Institute. None of the authors have appeared before regulatory agencies on behalf of the sponsors, or appeared as experts in legal proceedings concerning matters reviewed in this paper. The scientific opinions and conclusions expressed in the paper are exclusively those of the authors, and are independent of the sources of financial support.
Keywords
Alzheimer’s disease; antiperspirants; aluminum nanoparticles; breast cancer; encephalopathy; microcytic anemia; minimal risk level; osteomalacia; parenteral nutrition; reactive oxygen; threshold limit value; tolerable weekly intake; vaccine adjuvants