Intracellular hydrolysis of dipeptides during intestinal absorption
نویسندگان
چکیده
منابع مشابه
Intestinal absorption of stereoisomers of dipeptides in the rat.
1. Studies have been made of jejunal absorption rates in vivo in the rat of the stereoisomers of alanylphenylalanine, leucyl-leucine and glycyltryptophan. Absorption rates of L-alanyl-L-phenylalanine were about 200 times those of D-alanyl-D-phenylalanine, L-leucyl-L-leucine about 24 times those of the DD-isomer, and glycyl-L-tryptophan 5 times those of glycyl-D-tryptophan. The mixed DLand LD-is...
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A 30 cm segment of the duodenum, jejunum, or ileum of normal human volunteers was perfused, on separate occasions, with test solutions containing either glycylglycine, free glycine, glycylleucine, or equimolar amounts of free glycine and free leucine. Luminal fluid contained no hydrolytic activity against glycylglycine and minimal activity against glycylleucine. In each intestinal segment, amin...
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Many experimental techniques have allowed researchers to probe the fate of hydrolysis products from proteins in the small intestine. An overview of amino acid and peptide absorption from the small intestine is presented with attention given to historical perspectives that have led to current concepts. Speculation about nutritional significance of these processes is offered. Species differences ...
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ژورنال
عنوان ژورنال: The Journal of Physiology
سال: 1960
ISSN: 0022-3751
DOI: 10.1113/jphysiol.1960.sp006493