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参附注射液改善大鼠肝移植缺血再灌注后Kupffer细胞的激活

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Keywords: Kupffer细胞,肝移植,再灌注损伤,参附注射液,糖皮质激素受体,核因子-κB,大鼠

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Abstract:

目的观察参附(Shenfu,SF)注射液预处理对大鼠肝移植缺血再灌注后Kupffer细胞中糖皮质激素受体(glucocorticoidreceptor,GR)、核转录因子κB(NF-κB)表达的影响,探讨参附预处理保护缺血再灌注损害(ischemiareperfusioninjury,IRI)的机制。方法将雄性SD大鼠按完全随机分组法分为正常对照组、缺血再灌注组和SF组,其中缺血再灌注组、SF组建立肝移植缺血再灌注模型,于缺血再灌注后6h分离培养受体移植肝脏的Kupffer细胞。通过RT-PCR、Westernblot和激光共聚焦显微镜技术、免疫荧光法、ELISA等实验技术检测Kupffer细胞GR的mRNA和蛋白表达、NF-κB的蛋白表达、培养上清中TNF-α的含量。结果缺血再灌注组Kupffer细胞GRmRNA和蛋白表达均明显低于正常对照组(P<0.01),缺血再灌注组NF-κB、培养上清TNF-α表达量(830.19±71.34)明显高于正常对照组NF-κB、培养上清TNF-α表达量(65.41±37.63,P<0.01)。与缺血再灌注组相比,SF组GR水平明显上升(P<0.01),NF-κB活性、TNF-α表达量(543.59±41.27)明显下降(P<0.01)。结论缺血再灌注损伤会导致Kupffer细胞GR的表达下调,NF-κB的激活;参附预处理可以改善肝移植缺血再灌注后Kupffer细胞的激活。

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