Anti-diabetic potential of chloroform extract of flowers of Calotropis gigantea: An in vitro and in vivo study

N. K. Choudhary, A. K. Jha, S. Sharma, S. Goyal, J. Dwivedi

Abstract


The chloroform extract of Calotropis gigantea flowers was evaluated for anti-diabetic activity in alloxan-induced hyperglycemia in vivo and inhibition of α-amylase and α-glucosidase in vitro. It was also intended to establish correlation between the serum marker antioxidant enzymes and diabetes. Diabetes was induced by a single intraperitoneal injection of alloxan monohydrate freshly prepared
in a dose of 150 mg/kg. Chloroform extract showing presence of flavonoids was administered orally at the doses of 100 and 200 mg/ kg for 21 consecutive days. Fasting blood glucose level, glycosylated haemoglobin, blood glutathione, serum creatinine kinase, serum lactate dehydrogenase levels as well as final change in body weight were evaluated. In vitro inhibition of carbohydrate digestive enzymes (α-amylase and α-glucosidase) was also determined. Experimental findings showed moderately significant anti-diabetic potential of extract in terms of reduction of fasting glucose level in diabetic rats. The extract was found statistically significant in maintaining the level of serum marker antioxidant enzymes. Overall, the effect of chloroform extract particularly 200 mg/kg was moderate as compared to that of standard drug glibenclamide.
Key words: Anti-hyperglycemic, calotropis gigantean, glibenclamide, α-amylase, α-glucosidase

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DOI: http://dx.doi.org/10.22377/ijgp.v5i4.217

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