大鼠肝脏胆管及门静脉铸型扫描图像分析  

Establishment of a rat self-control model with the bile duct deprived and the portal vein deprived hepatic lobe and the casting liver specimen scanned by Micro-CT

作　　者：焦华波[1] 黄志强[2] 许勇[1] 朱自满[1] 涂玉亮[1] 刘荣[2] 

机构地区：[1]解放军总医院第一附属医院肝胆外科,北京100048 [2]解放军总医院肝胆外科

出　　处：《中华实验外科杂志》2011年第7期1133-1135,共3页Chinese Journal of Experimental Surgery

摘　　要：目的建立大鼠去胆管肝叶和去门静脉肝叶自身对照模型，观察两肝叶之间胆管及门静脉是否存在交通支及其大体形态变化。方法SD大鼠40只，分为S、BL、PL和BPL共4组，分别应用氰基丙烯酸酯对肝右叶管进行栓塞结扎制备去胆管肝叶；对肝方叶行门静脉结扎制备去门静脉肝叶。通过测量肝重／体重和方叶重／右叶重及对各组大鼠胆管和门静脉分别灌注硫酸钡明胶混悬液制备铸型标本，并运用Micro—CT扫描来观察两叶肝脏胆道和门静脉形态变化。结果（1）大鼠手术后在本观察期内存活率达到100％，无黄疸表现。肝叶大体形态：观察和两叶肝重量比指标显示，S、BL、PL组肝重／体重为3．5％，与BPL组比较差异有统计学意义（P〈0．01）。S、BL组方叶／右叶重量比为60％～70％，PL及BPL组则为20％左右，提示去胆管和去门脉肝叶之间的重量比差异有统计学意义（P〈0．05或P〈0．01）。（2）Micro—CT铸型扫描可以直观地显示胆管和门静脉形态变化，未发现两个肝叶之间存在交通支或侧枝循环。结论去胆管肝叶无明显萎缩。胆管及门静脉灌注造影显示两叶胆管及门静脉无明显的侧枝循环。Micro—CT扫描可以直观地显示胆管及门静脉形态变化，硫酸钡明胶灌注铸型为小动物肝脏Glissons系统形态学研究提供了一种借鉴方法。Objective To establish a rat self-control model with the bile duet deprived （BDD） and the portal vein deprived （PVD） hepatic lobe and to observe whether there were communicated branches between the two lobes. Methods Forty SD rats were divided into four groups ： group S with sham operation as an undisposed blank control, group BL with the right lobe bile duet embolized and ligated, group PL with the quadrate lobe portal vein ligated, and group BPL with the right lobe bile duct embolized and ligated and meanwhile the quadrate lobe portal vein ligated. The right hepatic bile ducts were embolized with cyanoacrylate and then ligated to prepare the BDD lobe. The portal vein ef quadrate hepatic lobes was liga- ted as the PVD lobes. The observation period was 1 month after the bile duct or portal vein ligated. The values of liver weight/body weight and the quadrate lobe weight/the right lobe weight were recorded. The bile duct and portal vein casting specimens of these four groups were prepared by a perfusion with barium and gelatin solution. Three-dimensional micro-computerized tomography （Micro-CT） data sets were acquired to observe the morphological changes of bile duct and portal vein of the livers and whether there were communicated branches between the right and quadrate lobes in order to estimate the feasibility of the model. Results （ 1 ） The survival rate of rats after operation was 100%. No jaundice was observed. The ratio of liver/body weight in groups S, BL and PL was about 3.5% , significantly lower than that in group BPL （P 〈0. 01 ）. The ratio of quadrate/right lobe weight in groups S and BL was about 60%-70% , while that was about 20% in groups PL and BPL （ P 〈 0. 05, or P 〈 0. 01 ） ; （2） Miero-CT images exhibited directly the morphological changes of the hepatic bile duct and portal vein, and no communicated branches or side circulation situation were observed between the two lobes. Conclusion No collateral branches were found between the two lobes and the model was su

关 键 词：胆管栓塞 门静脉结扎 模型 动物 肝脏铸型 CT扫描 

分 类 号：R657.3[医药卫生—外科学]