['Glutamine is an important nutrient for the small intestine. Beneficial effects of glutamine could be related to restoration of optimal intestinal barrier functions.', 'Thirty-eight Sprague-Dawley rats were allocated to three main groups. Experimental groups (n = 22) were malnourished and laparotomized. Sham groups (n = 11) were laparotomized without prior malnutrition. These groups were refed with or without oral glutamine for 3 days. The control group (n = 5) was given chow. Permeability was assessed by the 6-h urinary recovery of orally given polyethylene glycols, PEG 400/1000. Mucosal proliferation was estimated by DNA content and 1-h incorporation of 3H-thymidine intravenously.', 'In the malnourished groups glutamine resulted in higher thymidine incorporation (p < 0.05) and better absorption of small PEG molecules (p < 0.05).'] Does enteral glutamine increase growth and absorptive capacity of intestinal mucosa in the malnourished rat?