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American Journal of Clinical Nutrition, Vol 46, 95-100, Copyright © 1987 by The American Society for Clinical Nutrition, Inc

ORIGINAL RESEARCH COMMUNICATIONS

Influence of maternal selenium status on human milk selenium concentration and glutathione peroxidase activity

S Mannan and MF Picciano

This study assessed whether relationships existed between maternal indices of selenium (Se) nutrition and milk content of Se and activity of glutathione peroxidase (GSH-Px). Samples of milk (n = 72) collected at 4, 8, 12, and 16 wk postpartum and blood from lactating (n = 10) and control (n = 8) women were analyzed. Plasma and erythrocyte Se concentrations and plasma GSH-Px activity were significantly lower in lactating than in control women. Maternal plasma Se concentration was positively correlated with plasma GSH-Px activity (r = 0.53, p less than 0.01) and with milk Se content (r = 0.61, p less than 0.01) and GSH-Px activity (r = 0.51, p less than 0.01). Stage of lactation did not influence either milk or blood values. Milk Se concentration was positively correlated with milk GSH-Px activity (r = 0.81, p less than 0.001). Results indicate that human milk Se content and GSH-Px activity are directly influenced by maternal Se nutrition.


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S. K. McLachlan, C. D. Thomson, E. L. Ferguson, and J. E. McKenzie
Dietary and Biochemical Selenium Status of Urban 6- to 24-Month-Old South Island New Zealand Children and their Postpartum Mothers
J. Nutr., December 1, 2004; 134(12): 3290 - 3295.
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