大鼠腹腔异位心脏移植模型的建立与评价
2018-03-31胡定辉李鸿雁刘尊涛杜琎李航
胡定辉 李鸿雁 刘尊涛 杜琎 李航
【摘要】目的 建立一种稳定可行的大鼠腹腔同种异体异位心脏移植模型。方法 选用40只SD大鼠作为供体和受体,随机分为A、B两组,在Ono创建的大鼠腹腔异位心脏移植模型的基础上,对麻醉方法、供心摘取、受体准备、吻合方法等进行了部分改进,术后统计手术时间及手术成功率。結果 正式实验20例存活14例,存活率70%。术中吻合口出血致死1例;术中移植心脏复跳后停跳l例;术后24h死亡4例,供心阻断时间为(30±5)min,手术时间为(50±5)min。结论 对经典的Ono大鼠腹腔异位心脏移植模型的手术步骤和操作流程进行优化和改进后,降低了建模的难度,缩短了手术时间,供体心脏保护好,手术成功率高。
【关键词】心脏移植;同种移植;异位移植;大鼠;动物模型
【中图分类号】R616.2 【文献标识码】B 【文章编号】ISSN.2095-6681.2018.02..02
【Abstriact】Objective To establish a simple and stable rat's abdominal heterotopic cardiac transplantation model with modified surgical technique.Methods 40 rats of heterotopic cardiac transplantation were performed using modified Ono's method, with modified technique of anesthesia, heart harvesting, recipient's vascular preparation and vascular anastomosis procedures. Donor's heart was transplanted to recipients abdominal cavity, the anastomosis were performed in an end-to-side manner between the donor's ascending aorta and the recipient's abdominal aorta, and between the donor's pulmonary artery and the recipient's inferior vena cava. The operation time and success rate were recorded.Results The average cold ischemia time was (30±5)minutes, total operation time was (50±5)minutes. In all 20 experiments, 14 recipient rats (70%) underwent successful heterotopic heart transplantation. One case died of hemorrhage, one died of cardiac systole, four cases died postoperatively.Conclusion Using modified Ono's procedures can increase the success rate of rat cardiac transplantation and make the operation easier.
【Key words】Cardiac transplantation; Homotransplantation;Heterotopic transplantation;Rat;Animal model
经典的大鼠腹腔异位心脏移植模型由Ono等[1]于1969年进行改进并确立模型的基本手术方式,由于其可行性较高,便于移植物观察等优点而被广泛应用于基础研究中。在本实验研究中,我们对Ono心脏移植模型的手术步骤和操作流程进行部分优化和改进,使得该移植模型的建立更加简单、稳定可靠。
1 材料和方法
1.1 动物及药物
本实验经江苏省中医药研究院伦理委员会批准。供者受体均为SD大鼠,均为雄性,体重200~250 g,以及实验用肝素、生理盐水、心肌保护液等药物均由江苏省中医药研究院动物中心提供。
1.2 手术器械
显微手术器械一套,无损伤血管阻断钳、常规手术器械若干,8 mg0 prolene线,纱布、棉签若干,Keeler2.5倍手术放大镜,冷光源手术灯1盏。……
