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        HO-1 up-regulation decreases liver ischemia/reperfusion injury by inhibiting mast cells degranulation

        2012-08-15 00:54:32TaoShaofu
        外科研究與新技術(shù) 2012年1期

        /Tao Shaofu

        (陶紹富,Dept Gen Surg,Xinhua Hosp,Shanghai Jiangtong Univ,School Med,Shanghai 200092)…∥Chin J Gen Surg.-2011,26(9).-766~769

        ObjectiveTo investigate the effects of HO-1 on mast cells degranulation during liver ischemia/reperfusion injury.MethodsSD rats(n=20)were randomly divided into 4 groups:(1)sham operation group,(2)ischemia/reperfusion injury group(I/RI group),(3)CoPP group,CoPP was given before 24 h(5 mg/kg),(4)ZnPP group,ZnPP was given before 24 h(20 mg/kg).The rat model of liver ischemia/reperfusion was built.Samples were collected after 2 hours reperfusion.HO-1 mRNA expression was assessed by RT-PCR.The expression of HO-1 protein was assessed by Western blot.Serum ALT,AST levels were determined.The amount of degranulated mast cells were detected by toluid-ine blue staining.Liver injuries were evaluated by HE staining.ResultsCompared to sham group,liver HO-1mRNA and protein expression,ALT,AST levels,the number of degranulated mast cells significantly increased in I/RI group,CoPP group and ZnPP group.Moreover,liver injuries were more serious.Compared to I/RI group,there were increased HO-1mRNA and protein expression,reduced ALT,AST levels and the number of degranulated mast cells,also reduced liver injuries were found in CoPP group.Compared to I/RI group,the expression of HO-ImRNA and protein was down-regulated,ALT,AST levels elevated and the number of degranulated mast cells increased accompanying more serious liver injuries in ZnPP group.ConclusionHO-1 overexpression reduces liver ischemia/reperfusion injury,possibly by inhibiting mast cells degranulation in liver tissues.11 refs.5 figs ,1 tab

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