Abstract
The effects of alanyl-glutamine dipeptide (Ala-Gln)-enriched parenteral nutrition onintestinal mucosa and gut barrier function were investigated. Wistar rats were studied. After moderate surgical stress was induced by 60% resection of the small intestine, the rats were randomized to three groups: the chow group was given standard rat chow; the PN group received standard parenteral nutrition (PN); and the Ala-Gln group received glutamine dipeptide-enriched parenteral nutrition (3% Ala-Gln). Rats were maintained on their respective diets for 8 days. The chow and Ala-Gln groups maintained serum glutamine concentrations, intestinal mucosal thickness and villus height. Bacterial translocation rates in the chow and Ala-Gln groups were 20%, which was significantly less than that in the PN group (70%, P < 0.05). The results indicated that Ala-Gln-enriched parenteral nutrition maintains intestinal adaptation and gut barrier function after massive intestinal resection and parenteral nutrition.
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