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促红细胞生成素对大鼠肝脏缺血再灌注损伤的抗炎作用 被引量:6

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摘要 目的观察促红细胞生成素对大鼠肝脏缺血再灌注损伤的抗炎作用。方法将雄性SD大鼠随机分为假手术组、模型组及促红素组。假手术组仅解剖分离肝十二指肠韧带;模型组采用无创血管夹夹闭肝左叶及中叶血流(约70%肝缺血),缺血时间为45 min;促红素组于缺血前30 min门静脉注射促红细胞生成素(3 000 IU/kg)。采集各组再灌注1、6、12 h血液及肝组织标本。全自动生化分析仪测定血清ALT、AST;ELISA测定血浆TNF-α、IL-1蛋白含量;Western blot免疫印迹检测肝组织NF-κB蛋白表达。结果与模型组比较,促红素组ALT、AST水平显著下调(P<0.05)。血浆TNF-α和IL-1含量自再灌注6 h明显升高,至12 h达最高;与模型组相比,促红素组各时间点血浆TNF-α和IL-1含量均明显降低(P<0.05)。再灌注后早期肝内组织NF-κB表达量开始增加,于6 h表达最高峰,其后开始下降;与模型组相比,促红素组各时间点肝组织NF-κB表达量均明显降低(P<0.05)。结论促红细胞生成素能有效减轻大鼠肝缺血再灌注损伤,其作用机制可能是通过抑制NF-κB的表达,减少TNF-α、IL-1的释放,从而减轻肝脏缺血再灌注过程中的炎症反应。
出处 《广东医学》 CAS 北大核心 2016年第6期828-830,共3页 Guangdong Medical Journal
基金 海南省医药卫生科研项目(编号:2014034)
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