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American Journal of Clinical Nutrition, Vol 40, 743-746, Copyright © 1984 by The American Society for Clinical Nutrition, Inc
ORIGINAL RESEARCH COMMUNICATIONS |
PW Fischer, A Giroux and MR L'Abbe
The effects of zinc supplementation on the copper status of healthy adult men, as assessed by the activities of the copper-metalloenzymes, plasma ferroxidase (ceruloplasmin), and erythrocyte Cu,Zn-superoxide dismutase, were determined. The subjects were given either two daily doses of 25 mg zinc or placebo for 6 wk. No significant differences in the plasma copper levels or the ferroxidase activities between the supplemented and control groups could be detected at 2, 4, or 6 wk. Plasma zinc increased and erythrocyte Cu,Zn-superoxide dismutase decreased in the supplemented group, the difference between the groups becoming significant at 6 wk (p less than 0.05). This suggested that the zinc supplements decreased the copper status of the experimental group.
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