Peanut skin procyanidins reduce intestinal glucose absorption involved in GLUT2-PLCβ2-PKC pathway in Caco-2 cells.
Background: Inhibition of glucose transport is associated with controlling postprandial hyperglycemia, which can reduce the risk of diabetes. As the research of procyanidins deepens, the gastrointestinal tract is the major effective site of procyanidins for exhibiting positive bio-activities. Peanut skin procyanidins (PSP) have shown potential in lowering blood glucose level, but the underlying mechanisms in the gut remain unclear. The aim of this study was to examine the effects of PSP on disaccharidase enzyme activity and glucose transport using an in vitro model.
Results: PSP showed a significant inhibiting activity of maltase in Caco-2 cells. Furthermore, PSP reduced glucose transport in a time- and dose-dependent manner in a Caco-2 monolayer model, as well as downregulating glucose transporter 2 expression through the activation of the phospholipase C β2/protein kinase C signaling pathway.
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The Journal of the Science of Food and Agriculture publishes peer-reviewed original research, reviews, mini-reviews, perspectives and spotlights in these areas, with particular emphasis on interdisciplinary studies at the agriculture/ food interface.
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