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American Journal of Clinical Nutrition, Vol 40, 1078-1089, Copyright © 1984 by The American Society for Clinical Nutrition, Inc
ORIGINAL RESEARCH COMMUNICATIONS |
GR Gutcher, WJ Raynor and PM Farrell
Prematurely born, low birth weight infants are abnormal by their very existence ex utero. Thus, the well-documented finding in such infants of low plasma vitamin E concentrations when compared to the adult poses philosophical and pragmatic difficulties as to whether or not a true deficiency state exists: do these low levels represent age-adjusted reference values or do they in fact represent a deficiency state, warranting treatment? We examined multiple measures of vitamin E status in 62 prematurely born, low birth weight infants in order to address this issue. Mathematical and statistical modeling of these measures during the first 21 days of life lead us to conclude that the ex utero antioxidant protective role of vitamin E is best achieved at plasma concentrations of tocopherol very close to those observed in the adult; specifically, when total tocopherol is greater than 0.64 mg/dl and alpha-tocopherol is greater than 0.50 mg/dl. Thus, at birth, a true deficiency in vitamin E exists for most preterm, low birth weight infants and early treatment is warranted.
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