Pueraria tuberosa extract inhibits iNOS and IL-6 through suppression of PKC-α and NF-kB pathway in diabetes-induced nephropathy. (16th May 2018)

• Record Type: Journal Article
• Authors: Shukla, Rashmi; Banerjee, Somanshu; Tripathi, Yamini B
• Is Part Of: Journal of pharmacy and pharmacology. Volume 70:Number 8(2018)
• Page Start: 1102
• Page End: 1112
• Publication Date: 2018-05-16
• Subjects: drugs from natural sources -- miscellaneous -- other; Pharmacy -- Periodicals; Pharmacology -- Periodicals; 615.1
• DOI: 10.1111/jphp.12931
• Languages: English
• ISSNs: 0022-3573

Abstract

Abstract: Objectives: Inflammation plays an important role in the pathogenesis of diabetic nephropathy (DN). The aim of this study was to explore the anti-inflammatory role of PTY-2r (extracted from Pueraria tuberosa ), on streptozotocin (STZ)-induced DN rats. Methods: Diabetes was induced by intraperitoneal injection of STZ (55mg/kg) in rats. After 60 days, the rats were randomly divided into three groups ( n = 6/each group), namely DN control group 2, DN rats treated with PTY-2r at dose of 100 mg/100 g, group 3 and 50 mg/100 g, group 4, p.o for 20 days. The normal rats were chosen as a normal control (NC) group 1. Key findings: In DN rats, the expression of iNOS and inflammatory cytokines (IL-6 and TNF-α) was significantly increased. Raised expression of PKC-α was also found. As NF-kB is the main transcription factor for the inflammatory response-mediated progression of DN, variation in NF-kB expression and its activated phosphorylated derivative (pNF-kB) were also evaluated and increase in expression was obtained in the kidney of DN rats. PTY-2r treatment significantly reversed these changes in dose-dependent manner. Conclusions: This study suggested that the nephroprotective effect of PTY-2r is possibly due to downregulation of PKC-α and NF-kB pathway and normalizing the expression of inflammatory cytokines and iNOS in the kidney of DN rats.