对肺候选人等候名单脱敏的有效性受到抗体反弹的限制
David Pinelli1, Jennifer Wright2, Amanda Kamar2
1Comprehensive Transplant Center, Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, United States of America.
Transplant immunology
|June 14, 2025
概括
对肺移植候选人的等待列表脱敏可以降低HLA抗体,但反弹限制了有效性. 移植前治疗对于那些可能在一周内接受肺部的人来说是最好的;否则,移植后治疗可能更安全.
科学领域:
- 免疫学 免疫学 免疫学
- 移植医学 移植医学
- 腎臟病學 (nephrology) 是一種醫學.
背景情况:
- 人类白细胞抗原 (HLA) 抗体对成功的肺移植构成重大障碍,增加了抗体中介排斥 (AMR) 的风险.
- 脱敏疗法旨在降低HLA抗体水平,从而有可能改善高度敏感的患者的移植机会和结果.
- 人们仍然对移植前无敏化方案的有效性,耐用性和安全性感到担忧,特别是在等待已故供体肺部的患者身上.
研究的目的:
- 评估在移植前经过基于等离子体的无敏化治疗的高度敏感肺候选人的纵向抗体水平和移植结果.
- 评估HLA抗体减少的持久性和反弹对移植结果的影响.
- 为了比较移植前无敏化与移植后治疗策略的有效性.
主要方法:
- 在15名高度敏感的肺移植候选人中对HLA抗体水平的纵向评估,这些候选人正在接受基于等离子酶的脱敏化.
- 对移植时间相对于脱敏治疗结束的分析.
- 脱敏队伍和接受移植后治疗的对照组之间的结果 (生存,急性排斥) 的比较.
主要成果:
- 一些患者在脱敏后观察到HLA抗体水平的显著下降.
- 大多数移植患者 (10人中7人) 在治疗后15天以上移植,在3-4周内,抗体反弹到治疗前水平或更高.
- 在比较移植前无敏化队列与移植后治疗对照组时,没有发现患者存活率或急性排斥率的显著差异.
结论:
- 基于等待清单的等待清单脱敏可以有效地降低HLA抗体水平,但抗体反弹经常限制其长期有效性.
- 移植前脱敏可能对那些肺部分配分数高的候选人最有益,他们可能在治疗完成后的一周内接受移植.
- 对于许多高度敏感的肺移植候选人来说,积极的移植后免疫抑制可能比移植前无敏化更安全,更有效的策略.
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