应用脂变供肝行减体肝移植的实验研究  

Experimental study of the reduced-size orthotopic liver transplantation in different steatotic rats

作　　者：叶晟[1] 韩本立[1] 董家鸿[1] 

机构地区：[1]第三军医大学附属西南医院全军肝胆外科研究所,西南肝胆外科医院,重庆400038

出　　处：《第三军医大学学报》2003年第16期1428-1430,共3页Journal of Third Military Medical University

摘　　要：目的　探讨大鼠脂变供肝用于减体肝移植的适宜植肝量及病理类型。方法　采用 70 %、60 %、5 0 %大鼠减体肝移植 (ROLT)模型 ,观察术后存活率、肝质量 /体质量、移植肝 /受体原肝及病理的改变。结果　大鼠Ⅰ级脂变的全肝移植和 70 %、60 %、5 0 %ROLT的 1周存活率分别为 91.67% ,75 % ,75 % ,2 5 % ;2周存活率分别为 83 .3 3 % ,75 % ,5 8.3 3 % ,0。Ⅱ级脂变的全肝及 70 %ROLT的 1周存活率为 83 .3 3 %和 2 5 %。小泡性脂变为主的供肝 ,其全肝及 70 %、60 %、5 0 %ROLT移植的 1周存活率分别为 83 .3 3 % ,75 % ,75 % ,3 3 .3 3 % ;2周存活率分别为 75 % ,66.67% ,66.67% ,0。Ⅰ级或以小泡性脂变为主的供肝 5 0 %ROLT的生存率与其它组相比均有显著性差异。术后病理可见肝再生及脂变减轻或消失 ,中央静脉及肝窦扩张。结论　要获得较高的术后存活率 ,大鼠Ⅰ级或以小泡性脂变为主的供肝行减体肝移植其移植肝 /受体体质量应大于 ( 2 .2 8± 0 .12 ) % (即移植肝 /受体原肝 >60 % ) ;而Ⅱ级脂变供肝不宜用于减体肝移植 ;Objective To observe the survival time, pathological change and liver regeneration in different kinds of reduced size liver transplantation in steatotic rats. Methods Rat models of different kinds of reduced size orthotopic liver transplantation were performed by modified two cuff vascular anastomoses and end to end suture for bile duct to observe the recipient body weight, graft weight, recipient original liver weight, histological and pathological and electron microscopic findings in comparison with those of the whole rat liver transplantation. Results One week survival rate of the whole liver transplantation, 70% reduced size liver transplantation(ROLT), 60% ROLT and 50% ROLT group (grade Ⅰsteatotic donor) was 91.67%, 75%, 75% and 25%, respectively, and 2 week survival rate was 83.33%, 75%, 58.33% and 0, respectively. In grade Ⅱ steatotic donor, 1 week survival rate of the whole liver transplantation and 70% ROLT was 83.33% and 25%. As to donor livers with microvesicular steatosis, 1 week survival rate of the whole liver, 70% ROLT, 60%ROLT and 50% ROLT was 83.33%, 75%, 75% and 33.33% and the 2 week survival rate was 75%, 66.67% 66.67% and 0. The survival rates of 50% ROLT in grade Ⅰ steatotic donor and livers mainly with microvesicular steatosis were significantly different from those in other groups. The 1 week survival rate of 70% ROLT was very poor in steatotic donors in grade Ⅱ. Pathological findings after operation included liver regeneration and mild lymphocyte infiltration in portal space, the amelioration of the steatosis in some cases and dilation of the central vein and sinusoids. Conclusion To obtain long term survival of reduced size liver transplantation using steatotic donors, the GRBW should be over (2.28±0.12)(the ratio of graft to recipient liver weight over 60%). Steatotic livers in grade Ⅱ should not be used as donors in ROLT. The steatosis can be ameliorated after operation.

关 键 词：大鼠 脂变供肝 减体肝移植 实验研究 

分 类 号：R575.5[医药卫生—消化系统] R617[医药卫生—内科学]