Objective To investigate the effect of pre-infusion with allogeneic lymphocytes treated by 5-FU on inducting immune tolerance of liver transplantation in rats. Methods Wistar and SD rats were used as liver transplantation donors and recipients, respectively. They were divided into 4 groups as following: control group: liver was transplanted from Wistar to SD rats without any other treatment; lymphocytes group: recipient was pre-infused lymphocytes （5×106 cell/ml, 1 ml） from Wistar rat 7 d and 4 d separately before transplantation; low concentration of 5-FU with lymphocytes group: lymphocytes were treated by 5-FU (7.5 μg) before pre-infusion; high concentration of 5-FU with lymphocytes group: lymphocytes were treated by 5-FU (15 μg) before pre-infusion. Pathological changes were observed on day 7 after liver transplantation. Results Acute slight rejection was observed in low concentration of 5-FU with lymphocytes group: liver cell cords were well-arranged basically, hepatic lobules structures could be observed, a few inflammatory cells infiltrated around central veins, and a few lymphocytes infiltrated around portal area. Acute severe rejection was observed in control group, and acute moderate rejection was observed in high concentration of 5-FU with lymphocytes group and lymphocytes group. Conclusion Pre-infusion of lymphocytes treated with low level 5-FU can induce immune tolerance better in recipients after liver transplantation.
Objective To analysis the common reasons for failure in orthotopic liver transplantation during preliminary experiment and propose the preventive. Methods One hundred and twenty cases in preliminary experiment using modified Kamada “two-cuff” method of orthotopic liver transplantation were retrospectively analyzed. Results The causes of failure included： lengthening of anhepatic phase (66 cases)， failed anastomosis of suprahepatic inferior vena cava (61 cases)， failed anastomosis of infrahepatic inferior vena cava (17 cases), failed anastomosis of portal vein (12 cases), unsatisfied anesthesia (8 cases). Succeed in 21 cases (17.50%, 21/120). Conclusion Improve the microsurgical operation techniques, particularly the anastomosis of suprahepatic inferior vena cava, can increase the success rate in orthotopic liver transplantation.