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Article Publish Status: FREE
Abstract Title:

Delphinidin 3-rutinoside-rich blackcurrant extract ameliorates glucose tolerance by increasing the release of glucagon-like peptide-1 secretion.

Abstract Source:

Food Sci Nutr. 2017 Jul ;5(4):929-933. Epub 2017 Apr 7. PMID: 28748082

Abstract Author(s):

Tsubasa Tani, Sho Nishikawa, Masaki Kato, Takanori Tsuda

Article Affiliation:

Tsubasa Tani

Abstract:

Glucagon-like peptide-1 (GLP-1) is an incretin that is secreted from enteroendocrine L-cells. Dietary factor-stimulation of endogenous GLP-1 is a promising strategy for increasing the action of GLP-1. Recent studies have shown that berries rich in anthocyanins improve insulin sensitivity and reduce the risk of type 2 diabetes. Our previous study found that the anthocyanin delphinidin 3-rutinoside (D3R) significantly increases GLP-1 secretion in GLUTag cells (enteroendocrine L cell line). Blackcurrants are berries that contain high levels of anthocyanins, particularly D3R. Pre-administered blackcurrant extract (BCE) 5 mg/kg body weight (1 mg D3R/kg) significantly ameliorated glucose tolerance after intraperitoneal glucose injection in rats by stimulating the secretion of GLP-1 and subsequently inducing insulin secretion. D3R did not break down significantly in the gastrointestinal tract for at least 45-60 minafter BCE was administered, suggesting that BCE-induced GLP-1 secretion is mainly mediated by D3R and not its degradation products. These findings demonstrate the novel biological function of D3R-rich BCE as a GLP-1 secretagogue. An increase in endogenous GLP-1 secretion induced by BCE may help toreduce the dosages of diabetic medicines and prevent diabetes.

Study Type : Animal Study, In Vitro Study

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Sayer Ji
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