建立小鼠异位心脏移植模型

目的:建立小鼠腹腔异位心脏移植模型.方法:选用建康C57近交系小鼠和BALB/c近交系小鼠,参考大鼠心脏移植Ono式模型,并加以改良.同系移植组(n=20)供、受体均采用BALB/c小鼠;同种异品系移植组(n=20)供体为C57近交系小鼠,受体为BALB/c近交系小鼠.结果:成功建立了小鼠腹腔异位心脏移植模型,供心热缺血时间为(0.9±0.05)min,冷缺血时间为(34.8±0.7)min,手术成功率为90%.同系移植组小鼠心脏移植物获得长期存活(＞100 d);同种异品系移植组小鼠心脏移植物存活期为(7.5±0.1)d.结论:提高供心的摘取技术及受体的血管吻合技术是手术成功的关键.

Establishment of a heterotopic heart transplantation model in mice

OBJECTIVE: To establish a mouse model of heterotopic heart transplantation. METHODS: In isotransplantation,BALB/c mice were used as both donors and recipients. In allotransplantation, C57 mice were used as donors and BALB/c mice as recipients. The hearts of donor mice were transplanted into the abdominal cavity of recipient mice, connecting aortic ascent artery of donor mice and abdominal aortic artery of recipient mice, main pulmonary artery of donor mice and inferior vena cava of recipient mice. RESULTS: The mouse model of heterotopic heart transplantation was established successfully with a success rate of 90 %. The mean time of hot ischemia and cold ischemia were (0.9 +/-0.05) min and (34.8 +/-0.7) min, respectively. The survival time of isograft was more than 100 days and that of allograft was (7.7 +/- 0.3) days. CONCLUSION: The operational procedure of donor heart and the quality of blood vessel anastomosis are two key points for successful heterotopic heart transplantation.