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American Journal of Clinical Nutrition, Vol 16, 232-237, Copyright © 1965 by The American Society for Clinical Nutrition, Inc.

Some Effects of Dietary Fat Upon Steroid and Amino Acid Metabolism

SHERMAN M. MELLINKOFF M.D.1, MARJORIE FRANKLAND A.B.1, ARTHUR D. SCHWABE M.D.1, HEINZ C. KELLNER M.D.1, MARGARET GREIPEL A.B.1, and DOROTHY MCNALL 1

1 From the Department of Medicine, School of Medicine, University of California, Los Angeles, California

Ten normal adult men were maintained on a diet relatively high in saturated fats and low in polyunsaturated fats for eleven days, and then for twenty-one days on a diet in which the ratio of saturated to unsaturated fat was reversed. The following changes were observed after the second diet, as compared with similar values after the first: a decrease in the plasma concentrations of cholesterol, total lipids, leucine and valine, and an increase in proline, cystine, arginine, 3-methylhistidine and aspartic acid; diminished urinary excretion of total neutral 17-oxosteroids as determined by acid hydrolysis and diminished urinary excretion of total 11-desoxy-17-oxosteroid fractions; diminished urinary excretion of etiocholanolone, cystine, valine, 3-methylhistidine and beta-alanine with increased urinary excretion of anserine, cystathionine and 1-methylhistidine. No consistent corresponding changes were observed in the urinary fractions of dehydroepiandrosterone, androsterone, amino acids other than those mentioned, or in the plasma levels of the dehydroepiandrosterone and androsterone conjugates or free dehydroepiandrosterone, androsterone and etiocholanolone.






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