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  • Title: The level of dietary protein and carbohydrate has a different effect on intestinal uptake of hexoses and lipids in rabbits with an ileal resection than in those with an intact intestinal tract.
    Author: Thomson AB.
    Journal: Can J Physiol Pharmacol; 1987 Feb; 65(2):219-25. PubMed ID: 3567736.
    Abstract:
    Either high protein, low carbohydrate (HP) or low protein, high carbohydrate (LP) diets were fed for 6 weeks to rabbits with or without resection of the distal half of the small intestine. Control and resected rabbits fed HP consumed more food and gained more weight than the animals fed LP. The level of dietary protein has a different effect on intestinal transport in animals with an ileal resection than in those with an intact small intestine. With 0.5 mM glucose, the in vitro uptake in control rabbits was greater for the LP than HP diet but was unchanged in resected rabbits; uptake of 0.5 mM galactose and 3-O-methyl glucose was unaffected by HP and LP, whereas in rabbit uptake was lower in LP than HP. The uptake of 40 mM glucose was greater with the LP than HP diet in control rabbits, but lower with LP than HP in resected rabbits. In control rabbits, the uptake of aluric acid was lower on the LP than HP diet; the uptake of octanoic acid, decanoic acid, and cholesterol was unchanged; and the uptake of each fatty acid and cholesterol was greater in resected rabbits fed LP than HP. Feeding a low protein diet to animals with an ileal resection is associated with lower jejunal uptake of high concentrations of glucose, but the higher uptake of galactose and enhanced permeability to fatty acids result in superior weight gain. Thus, recommendations for alterations in dietary protein and carbohydrate levels following ileal resection must be made with the knowledge that these changes may influence intestinal transport function as well as body weight gain.
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