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Life Sci. 1995;57(7):729-34.

Effect of gluten exorphins A5 and B5 on the postprandial plasma insulin level in conscious rats.

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  • 1Research Control Department, Nisshin Flour Milling Co., Ltd., Tokyo, Japan.

Abstract

The effect of exogenous opioid peptides, gluten exorphins A5 and B5, which were isolated from the enzymatic digest of wheat gluten, on the postprandial insulin level were examined in rats. The oral administration of gluten exorphin A5 at a dose of 30 mg/kg w. potentiated the postprandial plasma insulin level and the effect was reversed by naloxone. The administration of gluten exorphin B5 showed a similar effect at a higher dose (300 mg/kg w). Furthermore, intravenous administration of gluten exorphin A5 at a dose of 30 mg/kg w. also stimulated the postprandial insulin release. The fact that orally and intravenously administered gluten exorphin A5 stimulates insulin release suggests that it modulates pancreatic endocrine function by the action after the absorption rather than within the the gastrointestinal tract.

PMID:
7637543
[PubMed - indexed for MEDLINE]
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