Endogenous Bile Salts Are Associated With Bile Duct Injury in the Rat Liver Transplantation Model

被引:40
作者
Chen, Geng [1 ]
Wang, Shuguang [1 ]
Bie, Ping [1 ]
Li, Xiaowu [1 ]
Dong, Jiahong [1 ]
机构
[1] Third Mil Med Univ, Inst Hepatobiliary Surg, Southwest Hosp, Chongqing 400038, Peoples R China
关键词
Liver transplantation; Bile salts; Bile duct; Cold ischemia; Rat; COLD PRESERVATION; KNOCKOUT MICE; MDR2; EXPRESSION; SECRETION; MOUSE;
D O I
10.1097/TP.0b013e3181954fee
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
Background. Nonanastomotic biliary strictures area serious coin plication after orthotopic liver transplantation (OLT) and are difficult to cure. We examined the role of endogenous bile salt toxicity in the pathogenesis of bile duct injury after OLT. Materials and Methods. A total of 90 Sprague-Dawley rats were divided into three groups: Sham-operated group (Sham, n=30), OLT group with 1 hr donor liver preservation (OLT-1h, n=30), and OLT group with 12 hr donor liver preservation (OLT-12h, n=30). Bile was collected and analyzed biochemically. The histopathologic Study was performed to determine the intrahepatic bile duct morphologic changes. Hepatic expressions of bile transporters Ntcp, Bsep, Mdr2, and Oatps were detected. Results. During the first 2 weeks after transplantation, bile salt secretion was not parallel with phospholipid secretion, resulting in high biliary bile salt-to-phospholipid (BS:PL) ratio. The expression of bile transporters was consistent with the change of bile composition. Bile duct injury correlated significantly with bile salt secretion and BSTL ratio. Moreover, OLT group with longer donor liver preservation time (OLT-12h) had significantly lower Mdr2 messenger RNA/protein level, higher BS:PL ratio, and better correlation between BSTL ratio and bile duct injury compared with those of OLT-1h. Conclusions. The unparallel secretion of bile salts and phospholipids results in cytotoxic bile formation with high BS:PL ratio after liver transplantation. Longer donor liver preservation time will increase graft bile cytotoxicity. The results of this study suggest that endogenous bile salts play a role in the pathogenesis of bile duct injury after OLT.
引用
收藏
页码:330 / 339
页数:10
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