Indan Journal of Medical Research Indan Journal of Medical Research Indan Journal of Medical Research Indan Journal of Medical Research
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Year : 2012  |  Volume : 136  |  Issue : 5  |  Page : 815-821

Modulatory effect of polyphenolic extracts of Ichnocarpus frutescens on oxidative stress in rats with experimentally induced diabetes

1 Phytotherapy Research Laboratory, Department of Pharmaceutical Technology, Faculty of Engineering & Technology, Jadavpur University, Kolkata, India
2 Ethnopharmacology Laboratory, CSIR-National Botanical Research Institute, Lucknow, India

Correspondence Address:
C T Kumarappan
Department of Life Science, School of Pharmacy & Health Science, International Medical University, Kuala Lumpur 57000, Malaysia

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Source of Support: None, Conflict of Interest: None

PMID: 23287129

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Background & objectives: The role of oxidative stress in the development of diabetes mellitus and its vascular complications are extensively studied. Hyperglycaemia causes oxidative damage by generation of reactive oxygen species and results in the development of complications. The present study was undertaken with the objective of exploring the anti-hyperglycaemic potential of polyphenolic enriched extract of Ichnocarpus frutescens in streptozotocin induced (n-STZ) neonatal diabetic rats (pups) for six weeks and to study oxidative stress and antioxidant status. Methods: Two days old pups were rendered diabetic by single injection of streptozotocin (90 mg/kg body wt, ip). At the end of the treatment period, the level of blood glucose, serum biochemical markers, serum lipid levels and liver malondialdehyde, tissue antioxidant levels were measured. Results: A marked rise was observed in the levels of fasting blood glucose (230.33 mg/dl), lipid profiles, lipid peroxidative products and a significant decrease in tissue antioxidants (superoxide dismuatase, catalase and reduced glutathione) and serum high density lipoprotein cholesterol levels in STZ treated rats. Oral administration of polyphenolic extract (150 and 300 mg/kg body wt, po) decreased fasting blood glucose levels (187.66 and 170.50 mg/dl, respectively) of STZ-treated diabetic rats significantly (P<0.01), when compared with control rats. In addition, the polyphenolic extract showed favourable effect (P<0.01) on the reduced tissues antioxidants level, liver glycogen level, high density lipoprotein level, with significant (P<0.01) reduction of elevated lipid peroxidation products. Histopathological study of the pancreas showed the protective role of polyphenolic extract. Interpretation & conclusions: Our study showed the antioxidant of effect polyphenolic extract of I. frutescens in STZ induced experimental diabetes. The results also suggested that this polyphenolic rich extract could be potentially useful for hyperglycaemia treatment to correct the diabetic state.

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