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  • Title: Effects of graded glutamine intake on liver protein metabolism following partial hepatectomy.
    Author: Skullman S, Wirén M, Chu M, Permert J, Garlick PJ, McNurlan MA, Larsson J.
    Journal: Eur J Gastroenterol Hepatol; 1995 Sep; 7(9):881-6. PubMed ID: 8574722.
    Abstract:
    OBJECTIVE: To elucidate whether glutamine can influence the rate of regeneration and protein metabolism in regenerating liver. DESIGN: Liver regeneration rate, protein content and synthesis were measured in rats 7 days after a liver resection or sham operation. After the operation, the rats were fed three elementary isonitrogenous diets, one without and two including different levels of glutamine. METHODS: Fifty-six rats were randomly assigned to either sham operation or liver resection. After the operation, they received an isonitrogenous, isocaloric elementary diet with a glutamine content of 0, 2 or 4%. The resected part of the liver was weighed and analysed for DNA and protein content. Seven days later, hepatic protein synthesis was measured by the flooding method using L-[3H]-phenylalanine, and the liver was analysed for DNA, RNA and protein content. RESULTS: The regeneration rate was higher in the group receiving 2% glutamine but not in the group receiving 4% glutamine than in the 0% group. Total protein content was increased in regenerating liver in the 2 and 4% glutamine groups compared with the 0% group. Protein synthesis was higher 7 days after liver resection than in sham-operated rats. In the 2% group there was a tendency towards increased protein synthesis compared with the 0% group. CONCLUSION: A diet with normal glutamine content improved liver regeneration rate, total protein content and protein synthesis in regenerating liver, but an excess of glutamine did not enhance this effect.
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