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American Journal of Clinical Nutrition, Vol 31, 794-798, Copyright © 1978 by The American Society for Clinical Nutrition, Inc
ORIGINAL RESEARCH COMMUNICATIONS |
C Potera and DP Rose
Plasma amino acids were determined before and after orally administered alanine loads in five women using an estrogen-containing oral contraceptive and four healthy female controls. Oral contraceptive users and significant reductions in fasting plasma valine, methionine, isoleucine, tyrosine, phenylalanine, histidine, glutamic acid, and alpha-aminobutyric acid. With the exception of alpha-aminobutyric acid, these differences between the two groups were eliminated within 3 hr of alanine ingestion. This effect was due to a gradual increase in the plasma amino acids of the oral contraceptive-treated women, plus no change or slight reductions in the controls.
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