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American Journal of Clinical Nutrition, Vol 44, 24-32, Copyright © 1986 by The American Society for Clinical Nutrition, Inc

ORIGINAL RESEARCH COMMUNICATIONS

Protein nutrition and amino acid metabolism after 4 weeks of total parenteral nutrition with a mixture of 14 dipeptides: serendipitous observations on effects of sepsis in baboons

JA Vazquez, GA Paleos, HJ Steinhardt, K Langer, M Brandl, WL Fekl and SA Adibi

We investigated parameters of nutrition, metabolism, and organ function after 4 wk of total parenteral nutrition (TPN) in baboons receiving either dipeptides or amino acids as the nitrogen source. The two groups showed no significant difference with respect to gain in body weight, nitrogen balance, plasma and muscle concentrations of amino acids, plasma concentrations of proteins, and leucine incorporation into muscle protein. All dipeptides were efficiently utilized as evidenced by trace concentrations of dipeptides in plasma and urine; they produced no deleterious effect on the function of liver, kidney, or immune system. Development of infection in several baboons increased urinary excretion of urea nitrogen but had no effect on urinary excretion of dipeptides and amino acids with the single exception of taurine, which was greatly increased. In conclusion, the data show long- term efficacy and safety of the dipeptide mixture as the sole nitrogen source for TPN.




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Copyright © 1986 by The American Society for Nutrition