烧伤内毒素血症肝损害与相关炎性因子及调节蛋白的表达关系

被引:10
作者
刘友生,王晓东,冯俊明
机构
[1] 第三军医大学基础部病理学教研室
关键词
肝损害,急性;肿瘤坏死因子α;白细胞介素6;一氧化氮;一氧化氮合酶;脂多糖结合蛋白;
D O I
暂无
中图分类号
Q75 [分子遗传学];
学科分类号
071007 ;
摘要
目的:探讨烧伤合并内毒素血症早期肝脏损害的发生机制。方法:大鼠20%Ⅲ度体表烧伤合并腹腔注入内毒素(LPS)复制急性肝损害模型,随机分为烧伤复合内毒素注射组(烧注组)、单纯烧伤组(单烧组)、单纯内毒素注射组(单注组)和正常对照组,动态观察肝脏的形态改变及血清肿瘤坏死因子α(TNFα)、白细胞介素6(IL6)和一氧化氮(NO)等炎性因子(IFs)含量变化,观察它们在肝组织的核酸和(或)蛋白水平的原位表达和变化规律以及脂多糖结合蛋白(LBP)mRNA的原位表达特征。结果:在烧注组,主要表现为肝窦反应,枯否氏细胞(KCs)激活与增生以及肝细胞(HCs)变性坏死,肝窦血小板聚集、纤维素沉积与中性粒细胞(PMNs)扣押以及KCs和HCs退变溶解等;血清TNFα、IL6和NO的含量显著升高,组织TNFα、IL6和诱导型一氧化氮合酶(iNOS)主要定位于肝窦内皮细胞(SECs)、KCs和PMNs,TNFαmRNA和IL6mRNA主要定位于KCs、PMNs和巨噬细胞(MPs),LBPmRNA定位于肝细胞胞浆。而在单烧组或单注组,具有病变程度轻、IFs血清含量峰值滞后以及IFs在核酸和蛋白水平的原位表达相对较弱等特点。结论:
引用
收藏
页码:25 / 29
页数:5
相关论文
共 7 条
[1]  
Molecular cloning,characterization, and tissue distribution of rat lipopolysaccharide binding protein. Su G L,Freeswick P D,Geller D A,et al. J Immunol . 1994
[2]  
Lipopolysaccharide binding protein in primary hepatocytes and Hep G2 hepatoma cells. Grube B J,Cochane C G,Ye R D,et al. Journal of Biological Chemistry . 1994
[3]  
Interleukin 6: historical background, genetics and biological significance. Monique C J. Immunology Letters . 1990
[4]  
The L arginine nitric oxide pathway. Moncada S,Higgs A. The New England Journal of Medicine . 1993
[5]  
Induction of hepatocyte lipopolysaccharide binding protein in models of sepsis and the acute phase response. Geller D A,Kispert P H,Su G L,et al. Archives of Surgery . 1993
[6]  
Tumour necrosis factor alpha(TNF ) and interleukin 6 in a symosan induced shock model. Von Asmuth E J U,Maessen J G,Van Der Linden C J,et al. Scandinavian Journal of Immunology . 1990
[7]  
Role of lipopolysaccharide (LPS), interleukin 1, interleukin 6, tumor necrosis factor, and dexamethasone in regulation of LPS binding protein expression in normal hepatocytes and hepatocytes from LPS treated rats. Wan Y H,Freeswick P D,Khemlani L S,et al. Infection and Immunity . 1995