内皮素1单抗对肝移植缺血再灌注损伤中肝细胞凋亡的影响

目的探讨细胞凋亡在移植肝缺血再灌注损伤中的作用及内皮素1(ET-1)单克隆抗体对细胞凋亡的影响。方法应用ET-1单抗灌注移植肝，检测血浆与肝组织中ET-1，检测肝功能，测定移植肝组织的MDA及细胞凋亡：结果移植肝再灌注后血中ET-1，谷丙转氨酶(ALT)和肝组织中ET-1与MDA均明显升高，肝细胞凋亡明显增加；应用ET-1单抗后，血中ET-1，ALT和肝组织中ET-1及MDA均降低，肝细胞凋亡亦明显减少。结论ET-1单抗可通过减轻移植肝脂质过氧化反应的作用，从而减少肝细胞凋亡，起减轻到肝细胞损伤，从而保护移植肝。

Effect of endothelin 1 monoclonal antibody on apoptosis of hepatocytes during ischemia/reperfusion injury of liver transplantation in rats

Objective To evaluate the role of hepatocyte apoptosis in ischemia/reperfusion injury of grafted liver and the effects of endothelin 1 (ET 1) monoclonol antibody on hepatocyte apoptosis.Methods Othotopic liver transplantation rats were divided into two groups: with and without ET 1 antibody. The concentrations of ET 1 of plasma and liver tissue were measured. The parameters of liver fuction were determined . The concentration of malondialdehyde (MDA) was measured and the number of apoptotic hepatocytes in grafts liver was determined.Results The levels of ET 1, ALT in serum, and ET 1, MDA and apoptotic cells in the grafted liver after ischemia/reperfusion were significantly increased compared with normal values. In the ET 1 antibody group, the levels of ET 1, ALT, MDA and apoptotic cells were significantly decreased. Conclusions ET 1 monoclonal antibody can attenuate ischemia/reperfusion injury by decreasing lipid peroxide reaction, and decreasing apoptosis of hepatocytes and thus protect the liver graft.