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Chinese Journal of Clinical Pharmacology and Therapeutics ›› 2017, Vol. 22 ›› Issue (12): 1332-1339.

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Experimental study of benazepril intervene Wnt signaling inhibits renal fibrosis in UUO rats

ZHAO Yanyun 1, WU Xiaoyan 2,3, WANG Guomin 2,3, FENG Yulin 2,3, DONG Feixia 3,4    

  1. 1 Department of Pharmacy, Wenzhou Hospital of Traditional Chinese Medicine, Wenzhou 325000, Zhejiang, China; 2 Zhejiang University of Traditional Chinese Medicine, Hangzhou 310000, Zhejiang, China; 3 Department of Nephrology, Wenzhou Hospital of Traditional Chinese Medicine, Wenzhou 325000, Zhejiang, China; 4 Department of Nephrology, Wenzhou Geriatric Hospital, Wenzhou 325000, Zhejiang, China
  • Received:2017-04-24 Revised:2017-05-15 Online:2017-12-26 Published:2018-01-02

Abstract:

AIM: To investigate the antagonism mechanism of benazepril on renal fibrosis of unilateral uretreal obstructire(UUO). METHODS: Fifty-four Sprague-Dawley (SD) rats were randomly divided into three groups: sham operation group, model group, benazepril group. All the other groups were treated with surgery method of unilateral ureteral ligation to establish a rat model of renal fibrosis except the sham operation group. The pathological changes were observed by Masson staining; the positive staining expression of TGF-beta1, Col-IV, Wnt1, Wnt4 in frozen sections were observed by immunofluorescence staining; the expressions TGF-beta1, Col-IV, Wnt1and Wnt4 mRNA in renal tissues were detected by real time fluorescence quantitative PCR. RESULTS: Masson staining results: compared with the sham group, the parts of blue dye collagen fiber and the degree of renal fibrosis increased significantly in all modeled groups; compared with the model group, the parts of blue dye collagen fiber and the degree of renal fibrosis decreased significantly in benazepril group. Immunofluorescence and PCR results: compared with the model group, the positive expression of Wnt1, Wnt4, TGF-beta1, Col - IV and mRNA in the benazepril group decreased significantly. CONCLUSION: Benazepril can improve renal fibrosis by inhibiting the expression of TGF-beta1, Col-V, Wnt1, Wnt4 and ameliorating the level of renal fibrosis.

Key words: benazepril, renal interstitial fibrosis, unilateral ureteral obstruction, Wnt signaling

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