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Abstract Title:

Inhibitory effect of pomegranate on intestinal sodium dependent glucose uptake.

Abstract Source:

Am J Chin Med. 2011 ;39(5):1015-27. PMID: 21905289

Abstract Author(s):

Hye Kyung Kim, Soon-Sun Baek, Hong-Yon Cho

Article Affiliation:

Department of Food and Biotechnology, Hanseo University, Seosan 356-706, Republic of Korea.

Abstract:

Intestinal glucose uptake is mainly performed by its specific transporters, SGLT1 and GLUTs expressed in the intestinal epithelial cells. By using Caco-2 cells and 2-NBDG, we observed that intestinal glucose uptake was markedly inhibited by pomegranate (Punica granatum L, PG) among 200 screened edible Korean plants. The effects of the PG extract on Na(+)-dependent glucose uptake were further evaluated using brush border membrane vesicles (BBMV) obtained from the mouse small intestine. PG inhibited Na(+)-dependent glucose uptake with the IC(50) value of 424μg/ml. The SGLT1 protein expression was dose dependently down regulated with PG treatment in Caco-2 cells. We next assessed the antihyperglycemic effect of PG in streptozotocin (STZ)-induced diabetic mice. Administration of PG (800 mg/kg) to STZ mice for four weeks improved postprandial glucose regulation. Furthermore, elevated Na(+)-dependent glucose uptake by BBMV isolated from STZ mice was normalized by PG treratment. These results suggest that PG could play a role in controlling the dietary glucose absorption at the intestinal tract by decreasing SGLT1 expression, and may contribute to blood glucose homeostasis in the diabetic condition.

Study Type : Animal Study

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Sayer Ji
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Depression: 21st Century Solutions + The Dark Side of Wheat

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