摘要
目的探讨同种异系抗原门静脉接种和环孢霉素A(CsA)对同种异系间小鼠心脏移植存活期的影响.方法无菌条件下取出NIH/q新生小鼠(出生24 h内)的心脏,行BALB/C小鼠耳后皮下移植.移植前1周,预先用NIH/q小鼠脾细胞或用与供、受体无关的C57BL/6小鼠脾细胞行受体小鼠门静脉或腔静脉接种,同时给予小剂量CsA(4 mg/kg.b.w.)喂服(术前7 d～术后5 d).观察各组移植物的存活时间.结果供体脾细胞门静脉接种加CsA组移植物存活时间为(31.00±3.23)d,较其他各组显著延长(n=6,P＜0.05);单纯门静脉接种组和单纯CsA组移植物存活时间分别为(16.11±1.97)和(18.50±2.59)d,较对照组[(11.71±1.50)d]显著延长(P＜0.05);供体脾细胞经腔静脉接种以及与供、受体无关的C57BL/6小鼠脾细胞门静脉接种对移植物存活时间无显著影响(P＞0.05).结论供体脾细胞门静脉接种和CsA对延长同种异系小鼠心脏移植存活时间有协同作用,其作用具有抗原特异性.
Objective To investigate the effect of portal venous inoculation of donor splenocytes combined with cyclosporin A (CsA) administration on cardiac allograft survival in mice. Methods Heterotopic cardiac transplantation between fully allogenic NIH/q and BALB/C strain mice was performed. A modified procedure of neonatal heart-in-ear transplantation, as originally described by Fulmer et al, was adopted. We prepared donor splenocytes from NIH/q or third-party C57BL/6 spleens for BALB/C recipients, which were injected preoperatively via the recipeint portal vein or the systemic vein 1 week before the heart-in-ear transplantation. The recipients were subsequently treated with a short course of the immunosuppressive agent, CsA (4 mg/kg starting from 7 d before the operation till 5 d after it). Results Portal venous inoculation of donor splenocytes combined with CsA significantly prolonged cardiac graft survival (n=6, P<0.05) that reached 31.00±3.23 d, and 2 of the 6 allografts survived for more than 35 d. Donor splenocytes injected via the systemic vein or third-party C57BL/6 mice splenocytes injected via the portal vein did not prolong graft survival (P>0.05). CsA alone or portal venous inoculation of donor-specific splenocytes alone also prolonged graft survival (P<0.05), with mean graft survival time of 18.50±2.59 d and 16.11±1.97 d respectively. Conclusion Combination of portal venous inoculation of donor-specific splenocytes and CsA can prolong murine cardiac allograft survival, which is donor antigen-specific.
出处
《第一军医大学学报》
CSCD
北大核心
2002年第12期1093-1095,共3页
Journal of First Military Medical University
