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Pharmaceutical Biology
Year: 2009  |  Volume: 47  |  Issue: 5  |  Page No.: 380 - 383

Hypoglycemic activity of Iraqi Rheum ribes root extract

Aladdin M. Naqishbandi, Knud Josefsen, Mikael Egebjerg Pedersen and Anna K. Jager    

Abstract: Rheum ribes Linn (Polygonaceae) root is used traditionally to treat diabetes, hemorrhoids, ulcers, and diarrhea. Here, the hypoglycemic effect of R. ribes root extract in healthy mice was investigated. Fasted mice were given a single dose of 50mg/kg of three extracts of different polarity from R. ribes by gastric feeding and the blood glucose was measured 0, 1, 2, 4, and 24h later. The aqueous extract showed a significant hypoglycemic effect. In vitro, the aqueous extract stimulated insulin release from INS-1E cells at both stimulatory (20mM) and non-stimulatory (1mM) glucose concentrations, thus suggesting a mechanism for the in vivo effect. The hypoglycemic active fraction was found to contain anthraquinone glycosides of aloe emodin, emodin, physcion, and chrysophanol derivatives.

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