Selenium status of term infants fed selenium-supplemented formula in a randomized dose-response trial
Daniels, Lynne A., Gibson, Robert A., Simmer, Karen, Van Dael, Peter, & Makrides, Maria (2008) Selenium status of term infants fed selenium-supplemented formula in a randomized dose-response trial. American Journal of Clinical Nutrition, 88(1), pp. 70-76.
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BACKGROUND: The optimal form and dose of selenium supplementation required to achieve indicators of selenium status equivalent to those in breastfed infants are unclear. OBJECTIVE: The objective was to evaluate the effect of fortifying infant formula (6 microg Se/L) with 2 concentrations of selenate (7 and 15 microg/L) on biochemical indicators of selenium status and growth at 16 wk in term infants. DESIGN: A randomized dose-response trial was conducted in 3 groups of term infants fed formula with different selenium concentrations [6 microg/L, F+0 (control); 13 microg/L, F+7; and 21 microg/L, F+15] and in a parallel breastfed reference group (BF; 11 +/- 2 microg Se/L). RESULTS: One hundred sixty-one (47% males) infants completed the 16-wk study. Baseline plasma selenium was 0.3 +/- 0.1 micromol/L. At 16 wk, plasma selenium had increased in all groups (P < 0.001) and was greater (P < 0.01) in the F+7 and F+15 groups and lower (P < 0.05) in the F+0 group than in the BF group. Plasma glutathione peroxidase increased in the F+15 group, decreased in the F+0 group, and, at 16 wk, was lower in the F+0 group than in the other groups (all P < 0.05). Erythrocyte selenium and glutathione peroxidase decreased in all groups (P < 0.05), but the magnitude of the change was greater in the F+0 than in the F+15 group (P < 0.05). There was no effect of selenium supplementation on growth. CONCLUSIONS: Selenate fortification of formula resulted in an increase in plasma indicators of selenium status relative to indicators observed in infants fed low-selenium-containing formula. Although the erythrocyte indicators decreased in all groups, the 21-microg/L dose (F+15 group) resulted in a smaller decrease and in higher erythrocyte selenium than did the standard formula. Supplementation of low-selenium formula to provide a net selenium concentration close to that found in the breast milk of US women (18 microg/L) may be justified.
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|Item Type:||Journal Article|
|Additional Information:||Articles free to read on journal website after 12 months|
|Keywords:||selenium, babies, formula, infants, supplement|
|Subjects:||Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > NUTRITION AND DIETETICS (111100) > Clinical and Sports Nutrition (111101)
Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > PAEDIATRICS AND REPRODUCTIVE MEDICINE (111400) > Paediatrics (111403)
|Divisions:||Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Current > Schools > School of Public Health & Social Work
|Copyright Owner:||Copyright 2008 American Society for Nutrition|
|Deposited On:||09 Jan 2009 05:35|
|Last Modified:||22 Jan 2015 02:04|
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