大鼠心肌缺血再灌注损伤中肿瘤坏死因子的实验研究

被引:11
作者
徐世安
朱兵
陈晓慨
王占明
机构
[1] 中国医科大学附属第二医院心脏外科
关键词
缺血再灌注损伤; 肿瘤坏死因子;
D O I
暂无
中图分类号
R541 [心脏疾病];
学科分类号
摘要
目的 :探讨肿瘤坏死因子 (TNF)在心肌缺血再灌注损伤中的作用机制。方法 :应用大鼠Langendorff离体心脏灌注模型 ,通过酶联免疫法测定心肌组织TNF含量 ,原位杂交检测TNFmRNA的表达情况。结果 :对照组心肌组织中可以检测到一定含量的TNF ,但实验组心肌组织中的TNF水平较对照组明显升高 (P <0 .0 5 )。对照组心肌组织中没有TNFmRNA表达 ,染色呈阴性 ;实验组心肌组织中的TNFmRNA表达明显 ,染色呈强阳性或极强阳性 ,并将阳性表达的细胞定位于心肌细胞。结论 :TNF是在离体的、缺血心脏中产生的 ;TNF表达主要定位于心肌细胞 ,在心肌缺血再灌注损伤过程中 ,心肌细胞是影响心肌功能的TNF的重要来源
引用
收藏
页码:11 / 12+15
页数:3
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