HLA敏感性与心脏移植后初级移植功能障碍的风险增加有关
Jiho Han1, Josh Rushakoff2, Yasbanoo Moayedi3
1Section of Cardiology, Department of Medicine, University of Chicago Medical Center, Chicago, Illinois.
概括
移植前的人类白细胞抗原 (HLA) 敏感化,特别是HLA-A,增加了心脏移植 (HT) 后初级移植功能障碍 (PGD) 的风险. 这一发现对于改善HT前风险分层和尽量减少PGD至关重要.
科学领域:
- 免疫学 免疫学 免疫学
- 移植科学 移植科学
- 心脏病学 心脏病学
背景情况:
- 主要移植功能障碍 (PGD) 是心脏移植 (HT) 后的严重并发症,导致早期发病率和死亡率.
- 移植前对人类白细胞抗原 (HLA) 的敏感化是器官移植后不良结果的潜在风险因素.
研究的目的:
- 通过计算面板反应性抗体 (cPRA) 值量化的移植前HLA敏感度与HT后PGD的风险和严重程度之间的关联.
- 为了确定有助于PGD风险的特定HLA位点,以改善移植前风险分层.
主要方法:
- 分析了2015年1月至2019年12月在美国两个中心接受心脏移植的596名成年心脏移植患者的队列.
- 使用2014年国际心脏和肺移植协会共识声明来评估PGD严重程度.
- 局部特异性cPRA (cPRA-LS) 和HT前供体特异性抗体 (DSA) 根据受体的不可接受的HLA抗原进行了评估.
主要成果:
- 所有HLA位点的峰值cPRA-LS,特别是HLA-A,与PGD严重程度的增加有显著的关联.
- 多变量分析确定了HLA-A的峰值cPRA-LS,接受者使用β-阻断剂,缺血时间,捐赠者年龄,先前的心脏手术和UNOS状态作为PGD严重性的预测因素.
- 对HLA-B的DSA存在显示了轻度至中度PGD风险增加的趋势,但对其他HLA位点的DSA没有.
结论:
- 移植前的HLA敏感性,特别是对HLA-A,与心脏移植后的PGD严重程度更高有关.
- 建议将HLA敏感化数据,特别是HLA-A,纳入移植前风险分层模型,以减轻PGD风险.
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