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Copper supplementation has no effect on markers of DNA damage and liver function in healthy adults (FOODCUE project)

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O'Connor, JM, Bonham, MP, Turley, E, McKeown, A, McKelvey-Martin, VJ, Gilmore, WS and Strain, JJ (2003) Copper supplementation has no effect on markers of DNA damage and liver function in healthy adults (FOODCUE project). ANNALS OF NUTRITION AND METABOLISM, 47 (5). pp. 201-206. [Journal article]

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DOI: 10.1159/000070486

Abstract

Background/Aims: Copper is routinely used in the laboratory to promote oxidation in vitro. However, copper concentrations are million-fold higher than physiological concentrations and, in contrast, accumulating evidence suggests that copper may have an antioxidant role in vivo. The aim of this study was to provide data on how increased intake of copper affected mononuclear leukocyte DNA damage and liver function in healthy young free-living men and women. Methods: The study design was a double-blind repeated crossover trial with treatment and intervening placebo periods, each of 6 weeks' duration. The following supplementations were given orally in sequence: CuSO4 at a dose of 3 mg copper/day and copper amino acid chelates at doses of 3 and 6 mg copper/day. Oxidative DNA damage was assessed using a modification of the alkaline Comet assay incorporating an endonuclease III digestion step. The assessment of liver function was by measurement of the liver enzymes, alanine aminotransferase and L-gamma-glutamyltransferase. Results: There was no significant alteration in mononuclear leukocyte DNA damage or on liver function after 6 weeks of copper supplementation at two doses (3 and 6 mg/day). Conclusions: Copper supplementation (giving total copper intake at the highest level of 7 mg/day) did not induce DNA damage or adversely affect liver function in healthy adults. Copyright (C) 2003 S. Karger AG, Basel.

Item Type:Journal article
Faculties and Schools:Faculty of Life and Health Sciences
Faculty of Life and Health Sciences > School of Biomedical Sciences
Faculty of Life and Health Sciences > School of Pharmacy and Pharmaceutical Science
Research Institutes and Groups:Biomedical Sciences Research Institute
Biomedical Sciences Research Institute > Northern Ireland Centre for Food and Health (NICHE)
ID Code:7189
Deposited By:Professor Jacqueline McCormack
Deposited On:18 Jan 2010 11:36
Last Modified:04 Dec 2012 12:25

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