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Protective role of Phyllanthusfraternus in alloxan-induced diabetes in rats
Hasandeep Singh1, Ripdaman Singh1, Sarabjit Kaur1
1Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, 143005, India.
Background:
Phyllanthusfraternus is a pantropical weed of family phyllanthaceae, mainly found in northeast India. It has been used in the folklore medicine of Manipur tribe for treating type 2 diabetes.
Objective:
The present study was commenced to evaluate the anti-diabetic and renoprotective potential of P.fraternus (aerial parts) in alloxan-induced diabetes in rats.
Materials And Methods:
Alloxan (130 mg/kg, ip) was used for the induction of diabetes in adult male wistar rats. Animals with blood glucose level greater than 280 mg/dL were treated once daily for 14 days with various test extracts. The biochemical parameters were measured from serum on the 15th day post-treatment. Necropsy samples harvested from pancreas and kidneys were examined for histopathological changes in these organs.
Results:
Alloxan-induced diabetes not only caused significant increases in blood glucose, triglycerides, total cholesterol, creatinine and urea levels, but also provoked high oxidative stress in pancreas and kidneys. Profound morphological injuries were observed in islets of Langerhans and kidneys of diabetic animals. Administration of methanol extract (200 and 400 mg/kg) and mother liquor (200 and 400 mg/kg) ameliorate the elevated levels of blood glucose, triglycerides, total cholesterol as well as other biochemical parameters, but highest reduction in blood glucose concentration was observed with the largest dose of ethyl acetate fraction (400 mg/kg) of P.fraternus. Histopathological examination of pancreas and kidneys also exhibited greater protection by treatment with acetate fraction (400 mg/kg). The HPLC analysis showed the presence of four polyphenols such as catechin, gallic acid, caffeic acid and ellagic acid in ethyl acetate fraction of P. fraternus during HPLC analysis.
Conclusion:
The results suggest that polyphenols present in P.fraternus may be responsible for the anti-diabetic and renoprotective activity in rats. Such protective effects of could be mediated through flavonol-induced anti-oxidant and anti-inflammatory activities in the pancreas and kidneys.
