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American Journal of Clinical Nutrition, Vol 34, 1300-1304, Copyright © 1981 by The American Society for Clinical Nutrition, Inc

ORIGINAL RESEARCH COMMUNICATIONS

The protein-sparing action of protein feeding: absence of relationship to insulin secretion

RL Landau, H Rochman, P Blix-Gruber and AH Rubenstein

The influence of a 2-day fast was compared with that of a modified fast (1.5 g beef protein hydrolysate per kg body wt) on nitrogen metabolism and insulin secretion in three normal young men. During the fast urinary urea excretion indicated a negative nitrogen balance of 10 to 12 g daily in each subjects. With protein feeding nitrogen equilibrium was approached in each instance. Insulin secretion as indicated by the urinary excretion of C-peptide dropped profoundly with fasting to levels which averaged just 13 to 22% of the control base-lines and remained at about these levels during the protein feeding. The fact that this sensitive indicator of insulin secretion disclosed no significant difference during fasting and protein feeding provides strong evidence that the protein-sparing influence of protein feeding cannot be ascribed to the decline in insulin secretion.


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 JPEN J Parenter Enteral NutrHome page
R. L. Scott, J. E. Albina, and M. D. Caldwell
Effects of Hypocaloric Dextrose and Amino Acids on Body Composition and Nitrogen Balance in Rats
JPEN J Parenter Enteral Nutr, November 1, 1982; 6(6): 489 - 495.
[Abstract] [PDF]


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Copyright © 1981 by The American Society for Nutrition