Synergism effects of pioglitazone and Urtica dioica extract in streptozotocin-induced nephropathy via attenuation of oxidative stress

Authors

1 Pharmaceutical Science Research Center, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran

2 Department of Toxicology and Pharmacology, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran

Abstract

Objective(s): Hyperglycemia promotes oxidative stress that plays a crucial role in the pathogenesis of Diabetic nephropathy (DN). In this study, we investigated the synergism effects of hydroalcoholic extract of Urtica dioica and pioglitazone (PIO) on the prevention of DN in streptozotocin induced-diabetic mice.
Materials and Methods: Forty-two mice were divided into six groups as follows: non-diabetic control group, DMSO group (as solvent), diabetic group and four treatment groups which received U. dioica, pioglitazone, U. dioica plus pioglitazone and vitE. Diabetes was induced by a single dose of streptozotocin (STZ) (200 mg/kg body wt, IP) diluted in citrate buffer (pH= 4.6). After 4 weeks treatment, all animals were anaesthetized and blood was collected for serum urea and creatinine levels assessment in plasma and kidney tissue were excised for evaluation of oxidative stress markers.
Results: Treatment with U. dioica significantly inhibited increase in serum urea and creatinine in plasma that were observed in diabetic mice. Furthermore, the elevated level of oxidative stress markers (glutathione oxidation, lipid peroxidation (LPO), protein carbonyl) in renal supernatant of diabetic mice was inhibited by U. dioica treatment.  Interestingly, U. dioica promoted beneficial effects of PIO in reducing STZ-induced hyperglycemia, renal damage and oxidative stress markers.
Conclusion: Our findings showed that PIO plus U. dioica have synergism protective effects against STZ-induced nephropathy that can be a candidate as a therapeutic approach in order to treatment of DN.

Keywords

References

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Iranian Journal of Basic Medical Sciences
Volume 20, Issue 5
May 2017
Pages 497-502

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