Protective effect of S-nitrosoglutathione pretreatment on acute lung injury in septic rats

Wang, Zhou-feng and Yang, Yu-min and Fan, Heng (2020) Protective effect of S-nitrosoglutathione pretreatment on acute lung injury in septic rats. Iranian Journal of Basic Medical Sciences, 23 (8). pp. 1059-1064.

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Abstract

Objective(s): To investigate the protective effect of S-nitrosoglutathione (SNG) pretreatment on acute lung injury (ALI) in septic rats. Materials and Methods: We constructed a rat model of sepsis by cecal ligation and perforation (CLP), and randomly divided into Sham, CLP, and CLP䣑 (0.25 and 0.5 mg/kg) groups. We used H&amp;E staining and lung wet/dry ratio to assess the severity of lung injury, detected the levels of protein and cells in bronchoalveolar lavage fluid (BALF) and the levels of TNF-α, IL-1β, TLR4 mRNA, and NF-κB p65 mRNA in the lung tissue, and assessed the levels of glutathione (GSH), superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), and catalase in the lung tissue.Results: A rat model of sepsis was successfully constructed by CLP, and pretreatment of SNG significantly increased the survival of septic rats (P<0.001) and decreased the lung tissue injury scores (P<0.001) and lung wet/dry ratio (P<0.01) in a dose-dependent manner. Furtherly, SNG pretreatment significantly reduced the number of total cells, total protein, neutrophils, and lympholytes (all P<0.001) in BALF, and which also decreased the levels of TNF-α, IL-1β, TLR4 mRNA, and NF-κB p65 mRNA (all P<0.001) in the lungs of CLP-induced rats. Moreover, pretreatment of SNG significantly increased the levels of anti-oxidant enzymes GSH, SOD, GSH-Px, and catalase (all P<0.001) in the lung tissue of septic rats. Conclusion: SNG pretreatment has a protective effect on ALI in septic rats, and the specific mechanism may be related to anti-endotoxic, anti-inflammatory, and anti-oxidative properties.

Item Type: Article
Uncontrolled Keywords: Acute lung injury NF,κB Oxidative stress Sepsis S,nitrosoglutathione TLR4
Subjects: QV pharmacology
Divisions: Journals > Iranian J Basic Medical Sciences
Depositing User: ijbms ijbms
Date Deposited: 28 Jun 2020 09:51
Last Modified: 28 Jun 2020 09:51
URI: http://eprints.mums.ac.ir/id/eprint/19395

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