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ORIGINAL ARTICLE
Year : 2010  |  Volume : 1  |  Issue : 4  |  Page : 199-204

Antidiabetic activity of Pongamia pinnata leaf extracts in alloxan-induced diabetic rats


Department of Pharmacognosy and Phytochemistry, K. L. E. S College of Pharmacy, Ankola - 581 314, Uttar Kannada, Karnataka, India

Correspondence Address:
Mukesh S Sikarwar
Department of Pharmacognosy and Phytochemistry, K. L. E. University, K. L. E. S College of Pharmacy, Ankola - 581 314, Karnataka
India
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DOI: 10.4103/0974-7788.76780

PMID: 21455444

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The antidiabetic activity of Pongamia pinnata ( Family: Leguminosae) leaf extracts was investigated in alloxan-induced diabetic albino rats. A comparison was made between the action of different extracts of P. pinnata and a known antidiabetic drug glibenclamide (600 μg/kg b. wt.). An oral glucose tolerance test (OGTT) was also performed in experimental diabetic rats. The petroleum ether, chloroform, alcohol and aqueous extracts of P. pinnata were obtained by simple maceration method and were subjected to standardization using pharmacognostical and phytochemical screening methods. Dose selection was made on the basis of acute oral toxicity study (50-5000 mg/kg b. w.) as per OECD guidelines. P. pinnata ethanolic extract (PPEE) and aqueous extract (PPAE) showed significant (P < 0.001) antidiabetic activity. In alloxan-induced model, blood glucose levels of these extracts on 7th day of the study were 155.83 ± 11.211mg/dl (PPEE) and 132.00 ± 4.955mg/dl (PPAE) in comparison of diabetic control (413.50 ± 4.752mg/dl) and chloroform extract (210.83 ± 14.912mg/dl). In glucose loaded rats, PPEE exhibited glucose level of 164.50 ± 6.350mg/dl after 30 min and 156.50 ± 4.089mg/dl after 90 min, whereas the levels in PPAE treated animals were 176 ± 3.724mg/dl after 30 min and 110.33 ± 6.687mg/dl after 90 min. These extracts also prevented body weight loss in diabetic rats. The drug has the potential to act as an antidiabetic drug.


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