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目的：探讨不同血流阻断方式对荷瘤小鼠肝细胞功能的影响。方法：选择昆明小鼠24 只随机分为三组，正常对照组（Suspended operation,SO）、肝门阻断组（Occlusion of the portal triad, OPT）、保留肝动脉持续阻断门静脉（Occlusion of portal vein ,OPV）各 8 只。采用门静脉注射肿瘤的方法建立肝癌模型，建模后3 天采用阻断范围为左外叶和中叶、阻断时间为60 分钟的入肝血流阻断方式，复流后5 天后，通过测量3 组对肝脏的缺血再灌注损伤程度以及病理学变化来评价不同血流阻断方式对肝细胞功能影响的程度。结果：门静脉注射小鼠肝癌细胞8 天后，对照组测量小鼠正常丙氨酸氨基转移酶（ALT）值为66.5±22.3 IU/L，OPT 组值为276.3±80.5 IU/L，OPV 组值为89.6±28.4 IU/L，两组比较有统计学差异（P＜0.01）；对照组测量小鼠正常天冬氨酸氨基转移酶（AST）值为301.3±126.7 IU/L，OPT 组值为1126.4±285.5 IU/L，OPV 组值为438.6±150.7 IU/L，两组比较有统计学差异（P＜ 0.01），病理组织学OPV 组肝细胞损伤程度明显较OPT 组轻。结论：保留肝动脉持续阻断门静脉可以减轻荷瘤小鼠肝脏的缺血再灌注损伤。

英文摘要:

Objective: To investigate the effect of different hepatic vascular occlusion maneuvers on liver function in tumor-bearing mice. Methods: Twenty-four Kunming healthy mice were randomly divided into three groups, including SO（sham operation）（n=8）, group OPT（occlusion of portal triad）（n=8）and group OPV（occlusion of portal vein）（n=8）. Three days after an hepatocellular carcinoma model was established using portal vein injection,mice underwent either simultaneous clamping of both the portal portal vein and the hepatic artery or selective clamping of the portal vein to the median and left liver lobes for 60 minutes. Sham-operated mice served as controls. The ischemia-reperfusion（I/R）, pathological changes of liver tissue were evaluated. Results: The OPV group showed significantly lower ALT, AST value in the restoration of blood flow after five days than the OPT group. Hepatocytes in the OPV group were much less injured than in the OPT group in histopathology. Conclusion: Presevering hepatic artery flow during portal triad blood inflow occlusion reduces liver ischemia-reperfusion injury in tumor-bearing mice.

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