title: Effect of oral alanine loads on plasma amino acids in oral contraceptive users and control women.
abstract: 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.
mesh_terms: D000293:Adolescent; D000328:Adult; D000409:Alanine; D000596:Amino Acids / Q000097:blood*; D003276:Contraceptives, Oral / Q000494:pharmacology*; D003277:Contraceptives, Oral, Combined / Q000494:pharmacology; D003280:Contraceptives, Oral, Synthetic / Q000494:pharmacology*; D004997:Ethinyl Estradiol / Q000494:pharmacology; D005260:Female; D006801:Humans; D008656:Mestranol / Q000494:pharmacology; D009640:Norethindrone / Q000494:pharmacology; D009644:Norgestrel / Q000494:pharmacology; D013997:Time Factors
chemical_list: D000596:Amino Acids; D003276:Contraceptives, Oral; D003277:Contraceptives, Oral, Combined; D003280:Contraceptives, Oral, Synthetic; D009644:Norgestrel; D004997:Ethinyl Estradiol; D008656:Mestranol; D000409:Alanine; D009640:Norethindrone