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Phytother Res. 1999 Sep;13(6):504-7.

Antihyperglycaemic effect of Mangifera indica in rat.

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Department of Pharmacology and Therapeutics University of Ilorin Nigeria.


The leaves of Mangifera indica are used as an antidiabetic agent in Nigerian folk medicine. To determine whether or not there is a scientific basis for this use, the effect of the aqueous extract of the leaves on blood glucose level was assessed in normoglycaemic, glucose - induced hyperglycaemic and streptozotocin (STZ)-induced diabetic rats. The aqueous extract given orally (1 g/kg) did not alter the blood glucose levels in either normoglycaemic or STZ-induced diabetic rats. In glucose - induced hyperglycaemia, however, antidiabetic activity was seen when the extract and glucose were administered simultaneously and also when the extract was given to the rats 60 min before the glucose. The hypoglycaemic effect of the aqueous extract was compared with that of an oral dose of chlorpropamide (200 mg/kg) under the same conditions. The results of this study indicate that the aqueous extract of the leaves of Mangifera indica possess hypoglycaemic activity. This action may be due to an intestinal reduction of the absorption of glucose. However, other different mechanisms of action cannot be excluded.

[Indexed for MEDLINE]

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