Abstract Title:

Inhibitory effect of methanol extract of Rosa damascena Mill. flowers on alpha-glucosidase activity and postprandial hyperglycemia in normal and diabetic rats.

Abstract Source:

Phytomedicine. 2009 Oct;16(10):935-41. Epub 2009 Apr 19. PMID: 19380218

Abstract Author(s):

A Gholamhoseinian, H Fallah, F Sharifi far

Article Affiliation:

Department of Biochemistry, Medical School&Kerman Physiology Research Center, Kerman University of Medical Sciences, Kerman, Iran. agnajar@yahoo.com


The effect of a methanol extract of Rosa damascena Mill. flowers was studied, in comparison to the alpha-glucosidase inhibitor acarbose, in normal and diabetic rats. The inhibition mode of this extract was examined by measuring enzyme activity in different concentrations of substrate for Lineweaver-Burk plot analysis. The results show that Rosa damascena extract has an intensive inhibitory effect on alpha-glucosidase. Its inhibition was found to be noncompetitive. Oral administration of this plant extract (100 to 1000 mg/kg body wt.) significantly decreased blood glucose after maltose loading in normal and diabetic rats in a dose-dependent manner. These results suggest that Rosa damascena might exert an anti-diabetic effect by suppressing carbohydrate absorption from the intestine and can reduce the postprandial glucose level.

Study Type : Animal Study

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