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Abstract Title:

Anti-diabetic property of Methanol extract of Musa sapientum leaves and its fractions in alloxan-induced diabetic rats.

Abstract Source:

Niger J Physiol Sci. 2013 Jun 30 ;28(1):91-7. Epub 2013 Jun 30. PMID: 23955414

Abstract Author(s):

E O Adewoye, A O Ige

Article Affiliation:

E O Adewoye

Abstract:

Diabetes mellitus is a metabolic disorder resulting from necrosis ofβ-cell and insulin resistance at the cellular level. Musa sapientum has been shown to possess anti-diabetic properties, however, the mechanism of its action is unknown. The effect of Methanolic extract of Musa sapientum leaves (MEMSL) and its fractions were assessed for in vitro inhibitory activityof α-amylase enzyme, in vivo hypoglycemic properties and liver glycogen content in alloxan-induced diabetic rats. Dried plant powder of Musa sapientum was successively extracted using n-hexane, ethyl acetate, dichloromethane and methanol respectively. The filtrate obtained was evaporated using rotary evaporator and the extract was stored at 4°C until use. The methanolic extract obtained was further fractionated using column chromatography. In vitro alpha amylase inhibitory activity of the methanolic extract at different doses (2.5mg/ml, 5mg/ml, 10mg/ml, 25mg/ml and 50mg/ml) and column fractions (100ug/ml) were assessed and compared with that of acarbose (5mg/ml), a standard oral α-amylase inhibitor. Hypoglycemic activity and liver glycogen content was studied using alloxan -induced diabetic male rats treated with MEMSL (250mg/kg and 500mg/kg), column fractions F2 and F5 (100μg/kg) for 14 days respectively. Results obtained showed a dose -dependent increase in α-amylase inhibitory activity of the methanolic extract at 5, 10, 25 and 50mg/ml exhibiting 29%, 61%, and 72% and 80% inhibitory activities respectively. Column fractions 2 and 5 showed the highest α-amylase inhibitoryactivity of 79% and 74% respectively. The MEMSL at 250mg/kg and 500mg/kg exhibited 66% and 59% hypoglycemic activities respectively compared with diabetic controls. Fractions 2 and 5 showed 48% and 75% reduction in blood glucose level respectively. Liver glycogen in diabetic animals treated with MEMSL (250mg/kg and 500mg/kg), F2 and F5 were significantly increased (5.5±0.5, 5.9±0.7, 3.6±0.5, 8.0±0.4 mg/100gwt. liver) compared with Diabetic controls (1.2±0.3 mg/100gwt. liver) respectively suggesting an increase in glucose storage or reduction in glycogen breakdown. It seems possible that the anti-diabetic properties in the leaf extract of Musa sapientum and its fractions maybe due to the inhibition of α-amylase, increased storage of glucose as glycogen in the liver and/or reduced breakdown of liver glycogen stores.

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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