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 RESEARCH ARTICLE
Year : 2012  |  Volume : 44  |  Issue : 5  |  Page : 555-559

Protective and curative effects of Cocos nucifera inflorescence on alloxan-induced pancreatic cytotoxicity in rats


Department of Biochemistry, University of Kerala, Kariavattom, Thiruvananthapuram, Kerala, India

Correspondence Address:
Thankappan Rajamohan
Department of Biochemistry, University of Kerala, Kariavattom, Thiruvananthapuram, Kerala
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0253-7613.100368

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Objectives: This study was planned to investigate the effects of pre and post-treatment of young inflorescence of Cocos nucifera (CnI) on alloxan-induced diabetic rats. Materials and Methods: Male albino Sprague Dawely rats were divided into five groups of six animals each. Group I was normal control, Group II was diabetic control, Cocos nucifera Inflorescence (CnI) was fed along with diet [20% (w/w)] orally (Group III) for a period of 11 days prior to alloxan injection (150 mg/kg i.p.). The curative effect of CnI was evaluated at the same feeding levels in alloxan-induced diabetic rats (Group IV) for a period of 30 days. The effects of both pretreatment and post-treatment (Group V) were also evaluated. Biochemical parameters such serum glucose, hepatic glycogen, and enzymes involving carbohydrate metabolism (hexokinase, phosphoglucomutase, pyruvate kinase, glucose-6-phosphatase, fructose 1, 6-diphosphatase, glucose-6 phosphate dehydrogenase, and glycogen phosphorylase) were assayed along with pancreatic histopathology. Data were analyzed using one-way analysis of variance followed by Duncan's post hoc multiple variance test. P < 0.05 was considered statistical significant. Results: Diabetic control rats showed significant increase in serum glucose (P < 0.05) and decrease in hepatic glycogen levels (P < 0.05) compared to normal rats, which was reversed to near normal in both CnI pretreated and post-treated rats. Treatment with CnI resulted in significant decrease (P < 0.05) in activities of gluconeogenic enzymes in Group III and IV on compared to the diabetic control group, while glycolytic enzyme activities were improved in these groups. The cytotoxicity of pancreatic islets also ameliorated by treatment with CnI on histopathological examination. Conclusion: The results obtained in the study indicate the protective and curative effects of CnI on alloxan-induced pancreatic cytotoxicity, which is mediated through the regulation of carbohydrate metabolic enzyme activities and islets cell repair.






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