Journal
CLINICA CHIMICA ACTA
Volume 339, Issue 1-2, Pages 11-25Publisher
ELSEVIER
DOI: 10.1016/j.cccn.2003.09.018
Keywords
co-antioxidants; vitamin C; vitamin E; transition metals
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Introduction: This review focuses on the process of arteriosclerosis arising from oxidative stress on lipoproteins and the general failure of randomized human trials using vitamins to retard this process. Review: As well as clinical trials, the paper reviews the mechanisms by which a variety of oxidants act. Antioxidants are discussed, emphasizing interactions of vitamins C and E with transition metals that can lead to prooxidation. There is a focus on interactions between supplemental or co-antioxidants that counterbalance prooxidant effects of one another. Conclusions: It is concluded that normal cellular supplementation mechanisms are poorly accessible in the arteriosclerotic plaque leading to a prooxidant environment in which the haphazard introduction of vitamins could potentially be hazardous. Continued investigations into basic and clinical redox interactions of the kind discussed in this review using new measuring techniques may lead to approaches whereby antioxidants can be introduced into tissue in controlled ways for reducing arteriosclerosis. (C) 2003 Elsevier B.V. All rights reserved.
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