实验性暴发性肝衰竭中肿瘤坏死因子α与肝细胞凋亡的关系

被引:9
作者
王玉梅
冯国和
李颖
赵桂珍
乔光彦
机构
[1] 中国医科大学第二临床学院感染科
[2] 中国医科大学第二临床学院感染科 辽宁沈阳
[3] 辽宁沈阳
关键词
肿瘤坏死因子α; 暴发性肝衰竭; 肝细胞; 凋亡;
D O I
暂无
中图分类号
R575.3 [肝功能衰竭];
学科分类号
1002 ; 100201 ;
摘要
目的 :研究肿瘤坏死因子α(TNF α)在暴发性肝衰竭肝细胞凋亡中的作用。方法 :对昆明小鼠注射脂多糖 (LPS)和D 氨基半乳糖 (D GalN) ,构建暴发性肝衰竭动物模型 ,采用脱氧核糖核酸转移酶介导的缺口原位末端标记技术及肝细胞DNA提取法 ,对肝细胞凋亡进行观察 ,并用RT PCR法检测肝组织TNF αmRNA的含量 ,用ELISA法测定血清中TNF α水平。结果 :在暴发性肝衰竭小鼠中 ,用药后 2h肝组织TNF αmRNA的表达达高峰 ,伴血清TNF α水平升高 ,以后逐渐下降 ,8h时以肝细胞凋亡为主 ,12h时则以肝细胞坏死为主 ,同时亦有肝细胞凋亡存在 ,应用抗TNF α抗体可阻断LPS +D GalN介导的肝细胞凋亡。结论 :在由LPS +D GalN所致的暴发性肝衰竭中肝细胞凋亡与TNF α的产生密切相关。肝细胞凋亡主要发生在病程早期 ,后期以坏死为主 ,凋亡可能是肝细胞坏死的早期过程
引用
收藏
页码:13 / 15
页数:3
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