NO与肝脏缺血再灌注损伤预处理保护效应

被引:12
作者
王占明
高德明
鲁建国
马庆九
吴金生
机构
[1] 第四军医大学唐都医院普通外科
[2] 第四军医大学唐都医院普通外科 西安
[3] 西安
关键词
缺血预处理; 延迟保护效应; 缺血再灌注损伤; 肝脏;
D O I
暂无
中图分类号
R657.3 [肝及肝管];
学科分类号
1002 ; 100210 ;
摘要
目的 :研究缺血预处理对SD大鼠肝脏缺血再灌注损伤保护机制中NO的作用 ;方法 :建立大鼠肝脏缺血再灌注模型并进行缺血预处理 ,实验分组如下 :假手术组 (Sham -operation ,S组 ) ;缺血再灌注组 (IschemicReperfusion ,I/R组 ) ;缺血预处理组 (IschemicPreconditioning ,PC组 ) ;预处理加左旋硝基精氨酸组 (Precondi tioning +L -NNA ,PC +L组 ) ,各组再灌注后检测血清丙氨酸转氨酶 (ALT)及丙二醛 (MDA)含量 ,肝组织石蜡切片HE染色及电镜观察 ;结果 :PC组ALT及MDA含量明显低于I/R组 (P <0 .0 1) ,肝组织损伤程度明显减轻 ;PC +L组在 0 - 3h阶段ALT和MDA含量与I/R组无显著区别 (P >0 .0 5 ) ,而在 6~ 48h阶段则显著低于I/R组 (P <0 .0 1)但仍高于PC组 (P <0 .0 5 )。结论 :缺血预处理对大鼠肝脏缺血再灌注损伤具有明显保护作用 ,0~ 3h为早期保护效应 ,可能为NO所触发或介导
引用
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页码:14 / 16+115 +115-116
页数:5
相关论文
共 7 条
[1]  
The effect of NO in ischemic preconditioning on liver ischemic reperfusion injury in rats. Guan YS,Lu XS. Zhonghua Putong waike Zazhi(Chin J Gen Surg) . 1998
[2]  
Protective effect of preconditioning on injury associated to hepatic ischemia- reperfusion in the rat: role of nitric oxide and adenosine. Carmen P,Georgina H,Daniel C,et al. Hepatology . 1997
[3]  
Protective effect of preconditioning on injury associated to hepatic ischemia- reperfusion in the rat: role of nitric oxide and adenosine. Garmen P,Georgina H,Daniel C,et al. Hepatology . 1997
[4]  
Hotter G Hepatic preconditioning in rats is defined by a balance of adenosine and xanthine. Peralta C,Closa D,Xaus C,et al. Hepatology . 1998
[5]  
Contribution of adenosine A2 receptors and cyclic adenosine monophosphate to protective ischemic preconditioning of sinusoidal endothelial cells against Storage/Reperfusion injury in rat livers. Arai M,Thurman RG,Lemasters JJ. Hepatology . 2000
[6]  
Rosello-Catafau J The Protective role of adenosine in inducing nitric oxide synthesis in rat liver ischemia preconditioning is mediated by activation of adenosine A2 receptors. Peralta C,Hotter G,Closa D,et al. Hepatology . 1999
[7]  
The effect of NO in ischemic preconditioning on liver ischemic/reperfussion injury in rats. Guan YS,Lu XS. Zhongguo Putong Waike Zazi(J Chin Gen Surg) . 1998