记忆B细胞衍生的供体特异性抗体不能预测敏感移植接受者的结果:一项回顾性单中心研究
Dania Altulea1, Joost C van den Born1, Arjan Diepstra2
1Division of Nephrology, Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, Netherlands.
Frontiers in immunology
|April 22, 2024
概括
在移植受体中检测到捐赠者特异性B细胞记忆抗体 (DSAm),但这项研究没有发现与抗体介导排斥 (ABMR) 有显著的关联. 需要进一步的研究来评估DSAm.
科学领域:
- 免疫学 免疫学 免疫学
- 移植科学 移植科学
- 临床病学 临床病学
背景情况:
- 经过敏感化后,可产生捐赠者特异性B细胞记忆抗体 (DSAm),在移植受体 (KTRs) 中存在抗体中介排斥 (ABMR) 的风险.
- 移植前的供体特异性抗体 (DSA) 是ABMR的已知风险因素.
- 识别DSAm可能会改善KTRs的风险分层.
研究的目的:
- 为了在KTR中识别DSAm与移植前DSA.
- 评估DSAm与临床结果之间的关联,特别是ABMR.
- 评估DSAm检测在KTRs免疫风险评估中的有用性.
主要方法:
- 60个KTR与移植前DSA的回顾性分析.
- 周围血液单核细胞 (PBMC) 的多克隆激活以检测DSAm.
- 用于IgG定量和单抗原珠 (SAB) 试验的ELISA用于HLA抗体分析.
- 使用BANFF 2019标准对ABMR进行脏活检的评估.
主要成果:
- 在移植时,在43%的KTR中检测到DSAm.
- 在移植前的DSAm和ABMR之间没有观察到显著的关联 (P=0.53).
- 卡普兰-梅尔分析和MFI水平也显示没有与ABMR有显著的关联.
结论:
- 在这个队列中,移植前DSAm检测与活检证明的ABMR没有相关性.
- 在预测ABMR中DSAm的作用需要进一步调查.
- 需要进行前性研究,以确定DSAm评估是否可以增强KTR监测.
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