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Alanylglutamine-enriched total parenteral nutrition improves protein metabolism more than branched chain amino acid-enriched total parenteral nutrition in protracted peritonitis



Alanylglutamine-enriched total parenteral nutrition improves protein metabolism more than branched chain amino acid-enriched total parenteral nutrition in protracted peritonitis



Journal of Trauma 42(2): 183-190



Branched chain amino acids (BCAAs) and glutamine are both recommended in catabolic states. The object of this study was to compare the efficacies of alanylglutamine (Ala-Gln)-enriched and BCAA-enriched total parenteral nutrition (TPN) on the protein kinetics in peritonitis. Rats were divided into Ala-Gln and BCAA groups after intraperitoneal implantation of an osmotic pump, delivering a continuous infusion of Escherichia coli. Glutamine composed 30.0% (w/v) of the total amino acids in the Ala-Gin group, and BCAA composed 30.5% (w/v) of the total amino acids in the BCAA group. The two solutions were isocaloric and isonitrogenous. Whole body protein turnover and organ fractional protein synthetic rates (FSR) were measured on days 3 and 5. Serum amino acid levels and mucosal morphology were determined. Ala-Gln group had higher rates of whole body protein turnover, and hepatic FSR on both days. Serum glutamine levels correlated with hepatic and muscle FSR. Ala-Gln TPN group had greater mucosal thickness, numbers of mitoses per crypt, and FSR in distal intestine. Ala-Gln-enriched TPN may be a useful nutritional treatment modality in sepsis.

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Accession: 008123311

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PMID: 9042868


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