Objective To explore the application of extracorporeal veno venous bypass in orthotopic liver transplantation in pigs and to compare hemodynamic changes during operation of two different bypass ways. Methods Twenty five porcine orthotopic liver transplantations were performed and extracorporeal veno venous bypass was established during anhepatic phase through a catheter in portal vein (group A, n =16) or in splenic vein (group B, n =9).Hemodynamic changes were monitored continuously.Results Fourteen recipients survived two days after operation (14/16) in group A while all survived in group B (9/9).Transient hemodynamic disturbance (MAP and CVP decreased,and HR increased) was monitored at both the beginning and the end of anhepatic stage in group A,while these parameters kept stable in group B ( P

Objective To study the early functional change of sinusoid endothelial cell after liver transplantation in rat, and to investigate the endothelia protective effect of prostaglandin E_1(PGE_1). Methods Rat orthotopic liver transplantation model was performed in "two-cuff method", grouped as follows: group A served as normal rat blank control, group B as operative control with normal donor, group C as experimental control with shock donor, and group D as experimental group with shock donor and PGE_1 administration ( n =8 in each group). Transplanted groups (referring to recipients without specific definition) were sacrificed 6 h after operation for blood taken to detect serum liver enzymes (ALT, LDH), malondialdehyde (MDA), nitric oxide (NO) and plasm endothelin (ET). Liver tissue was resected at the same time for standard pathologic examination. Comparison of the difference the results was made between groups. Results Cold preservation time and anhepatic phase were similar in each group, (2?0.5) h and (15?3) min respectively. All survived 6 h after transplantation (8/8) in group B and D with a survival rate of 100%, only 5 survived 6 h after transplantation in group C (5/8) with a survival rate of 62.5%. Comparing with group C, blood ALT, LDH, MDA, ET decreased and NO increased significantly in group D ( P

Objective To investigate the efficacy of hepatitis B vaccination in preventing hepatitis B (HBV) recurrence after liver transplantation for hepatitis B virus-related (HBV-related) recipients.Methods 30 healthy recipients who survived for more than 2 years after liver transplantation received vaccination using hepatitis B surface antigen (HBsAg)-containing vaccine.There were a total of 5 injections at 0 month, 1 month, 2 months, 3 months and 6 months respectively, and each dose was 40 μg.Thirty healthy adults who received hepatitis B vaccination during the same period were selected into the control group.The antibody of hepatitis B surface (Anti-HBs) titer was tested at 1 month, 2 months, 3 months, 6 months, 9 months and 12 months after the first vaccination.Results 6.7％ (2/30) of the liver transplantation recipients had good response (defined as a rise of Anti-HBs titer of more than 100 IU/L at 12 months after the primary vaccination), and 16.7％ of recipients (5/30) had partial response (Anti-HBs titer in 3 patients at less than 100 IU/L, Anti-HBs titer in 2 patients at more than 100 IU/L at first, then less than 100 IU/L after 12 months).For the 9 patients who received liver transplantation for acute liver failure, 2 had good response (22.2％) and another 2 patients (22.2％) had partial response.For the liver transplant recipients who survived for more than 5 years, 2 had good response (22.2％) and another patient (11.1％) had partial response.In the healthy control group, the good response rate was 73.3％ (22/30), and the partial response rate was 10％ (3/30).Conclusions Some HBV-related liver transplant recipients could acquire Anti-HBs by vaccination.Good response rate was lower in the HBV-related group of liver transplant recipients than in the healthy control group of people.Recipients for liver transplantation carried out for acute liver failure and recipients who survived for more than 5 years had higher response rates to HBV vaccination.HBV vaccination can be a way to prevent HBV recurrence in some liver transplant recipients.