通过捐赠者的脑死亡激活心脏加速移植后的急性排斥
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A Modified Method for Heterotopic Mouse Heart Transplantion
Published on: June 24, 2014
M J Wilhelm1, J Pratschke, F Beato
1Surgical Research Laboratory, Harvard Medical School and the Department of Surgery, Brigham and Women's Hospital, Cambridge, Massachusetts, USA.
Circulation
|November 9, 2000
概括
器官捐献者的脑死亡加速了心脏移植的拒绝. 供体心脏的炎症变化引发免疫反应,导致接受者更快,更强烈的急性排斥.
科学领域:
- 免疫学 免疫学 免疫学
- 移植生物学 移植生物学
- 心血管研究研究心血管研究
背景情况:
- 脑死亡可以提高捐赠心脏中的炎症调解剂的调节.
- 这可能会触发和放大心脏移植接受者的急性排斥.
- 这项研究调查了捐赠者的脑死亡对心脏全移植的影响.
研究的目的:
- 为了检查捐赠者脑死亡对心脏全移植的炎症和免疫后果.
- 为了比较脑死亡捐赠者与活体捐赠者的心脏排斥率.
主要方法:
- 从脑死亡的老鼠 (费舍尔,F344) 和活体供体对照中移植到路易斯接受者的心脏异位移植.
- 在脑死亡后6小时的呼吸器支持后,心脏被移植.
- 评估了炎症反应,细胞因子/化学因子表达,白细胞透和MHCII类抗原上调.
主要成果:
- 来自脑死亡捐赠者的心脏比来自活体捐赠者的心脏 (11.6天) 早得多 (9.3天) 被拒绝.
- 脑死亡加速了炎症反应,包括炎症媒介的快速表达和白细胞透.
- 增加主要基因相容性II类抗原表达增加了器官免疫性.
结论:
- 捐赠者的脑死亡对移植心脏是有害的.
- 由于脑死亡而导致炎症因素的升级会引起宿主免疫反应.
- 这加快了未经修改的移植接受者的急性排斥过程.
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