Tripterygium Glycosides Tablet Ameliorates Renal Tubulointerstitial Fibrosis via the Toll-Like Receptor 4/Nuclear Factor Kappa B Signaling Pathway in High-Fat Diet Fed and Streptozotocin-Induced Diabetic Rats

Journal of Diabetes Research
Ze-Jun MaLi-Ming Chen

Abstract

Tripterygium glycosides tablet (TGT) is a Chinese traditional medicine that has been shown to protect podocytes from injury and reduce the proteinuria. The aim of this study was to assess the effect of TGT on renal tubulointerstitial fibrosis and its potential mechanism in high-fat diet fed and STZ-induced diabetic rats. Rats were randomly divided into normal control rats (NC group), diabetic rats without drug treatment (DM group), and diabetic rats treated with TGT (1, 3, or 6 mg/kg/day, respectively) for 8 weeks. The results showed that 24 h proteinuria and urinary N-acetyl-glucosaminidase (NAG) in diabetic rats were decreased by TGT treatment without affecting blood glucose. Masson's trichrome stains showed that apparent renal tubulointerstitial fibrosis was found in DM group, which was ameliorated by TGT treatment. The expression of α-SMA was significantly decreased, accompanied by increased expression of E-cadherin in TGT-treated rats, but not in untreated DM rats. Further studies showed that TGT administration markedly reduced expression of TLR4, NF-κB, IL-1β, and MCP-1 in TGT-treated diabetic rats. These results showed that TGT could ameliorate renal tubulointerstitial fibrosis, the mechanism which may be at least partly...Continue Reading

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Citations

Aug 25, 2016·Environmental Pollution·Keng-Po LaiChris Kong-Chu Wong
Oct 4, 2018·American Journal of Physiology. Renal Physiology·Zhengwei MaZheng Dong
Jun 17, 2020·Experimental and Therapeutic Medicine·Yi MingHong-Yan Li
Apr 16, 2021·Frontiers in Pharmacology·Mingming ZhaoYu Zhang

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Methods Mentioned

BETA
PCR
light microscopy
protein assay
electrophoresis
X-ray

Software Mentioned

Quantity One
Image
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