Repair of a common bile duct defect with a decellularized ureteral graft
Yao Cheng1, Xian-Ze Xiong1, Rong-Xing Zhou1
1Yao Cheng, Xian-Ze Xiong, Rong-Xing Zhou, Yi-Lei Deng, Yan-Wen Jin, Jiong Lu, Fu-Yu Li, Nan-Sheng Cheng, Department of Bile Duct Surgery, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China.
Aim:
To evaluate the feasibility of repairing a common bile duct defect with a decellularized ureteral graft in a porcine model.
Methods:
Eighteen pigs were randomly divided into three groups. An approximately 1 cm segment of the common bile duct was excised from all the pigs. The defect was repaired using a 2 cm long decellularized ureteral graft over a T-tube (T-tube group, n = 6) or a silicone stent (stent group, n = 6). Six pigs underwent bile duct reconstruction with a graft alone (stentless group). The surviving animals were euthanized at 3 mo. Specimens of the common bile ducts were obtained for histological analysis.
Results:
The animals in the T-tube and stent groups survived until sacrifice. The blood test results were normal in both groups. The histology results showed a biliary epithelial layer covering the neo-bile duct. In contrast, all the animals in the stentless group died due to biliary peritonitis and cholangitis within two months post-surgery. Neither biliary epithelial cells nor accessory glands were observed at the graft sites in the stentless group.
Conclusion:
Repair of a common bile duct defect with a decellularized ureteral graft appears to be feasible. A T-tube or intraluminal stent was necessary to reduce postoperative complications.
