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Type: Artigo de periódico
Title: S-nitroso-N-acetylcysteine attenuates liver fibrosis in experimental nonalcoholic steatohepatitis
Author: Mazo, DFC
de Oliveira, MG
Pereira, IVA
Cogliati, B
Stefano, JT
de Souza, GFP
Rabelo, F
Lima, FR
Alves, VAF
Carrilho, FJ
de Oliveira, CPMS
Abstract: S-Nitroso-N-acetylcysteine (SNAC) is a water soluble primary S-nitrosothiol capable of transferring and releasing nitric oxide and inducing several biochemical activities, including modulation of hepatic stellate cell activation. In this study, we evaluated the antifibrotic activity of SNAC in an animal model of nonalcoholic steatohepatitis (NASH) induced in Sprague-Dawley rats fed with a choline-deficient, high trans fat diet and exposed to diethylnitrosamine for 8 weeks. The rats were divided into three groups: SNAC, which received oral SNAC solution daily; NASH, which received the vehicle; and control, which received standard diet and vehicle. Genes related to fibrosis (matrix metalloproteinases [MMP]-13, -9, and -2), transforming growth factor beta-1 [TGF beta-1], collagen-1 alpha, and tissue inhibitors of metalloproteinase [TIMP-1 and -2] and oxidative stress (heat-shock proteins [HSP]-60 and -90) were evaluated. SNAC led to a 34.4% reduction in the collagen occupied area associated with upregulation of MMP-13 and -9 and downregulation of HSP-60, TIMP-2, TGF beta-1, and collagen-1 alpha. These results indicate that oral SNAC administration may represent a potential antifibrotic treatment for NASH.
Subject: nitric oxide
Country: Nova Zelândia
Editor: Dove Medical Press Ltd
Rights: aberto
Identifier DOI: 10.2147/DDDT.S43930
Date Issue: 2013
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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