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慢性活性T细胞中介排斥中的分子排斥信号:组织学关联和潜在的临床影响
Lukas Weidmann1, Petra Hruba2, Eva Girmanova2
1University Hospital Zurich, Division of Nephrology, Zurich, Switzerland.
概括
分子诊断显示,慢性活性TCMR (caTCMR) 移植中的一个子集具有显著的T细胞中介排斥 (TCMR) 活性. 这一发现有助于风险分层caTCMR,即使微血管炎症最小.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學.
- 移植免疫学 移植免疫学
- 分子诊断学 分子诊断
背景情况:
- 慢性活性T细胞中介排斥 (caTCMR) 在脏全移植中提出了诊断挑战.
- 分子诊断,特别是基因表达分析,可以为caTCMR提供更好的风险分层.
- 区分caTCMR与急性TCMR和亚临床排斥对于患者管理至关重要.
研究的目的:
- 用caTCMR. 评估脏全移植活检中的分子诊断特征.
- 为了比较caTCMR,边界/急性TCMR和对照组之间的分子排斥活性.
- 确定caTCMR的分子相关物,并评估混合排斥模式的流行程度.
主要方法:
- 对26个caTCMR脏全移植活检的回顾性分析.
- 与40个边缘/急性TCMR病例和308个对照病例进行比较.
- 使用基于微阵列的基因表达概况 (GEP) 的转录组评估.
主要成果:
- 在一小部分caTCMR病例中 (36%的"纯"caTCMR) 检测到显著的分子TCMR活性.
- 在与同时发生急性TCMR的caTCMR病例中,分子TCMR活性更高.
- 组织病变 (i-, t-, ti-病变) 与分子TCMR活性相关,间歇性纤维化/管管缩 (IFTA) 与分子慢性相关.
结论:
- 分子诊断可以在部分caTCMR病例中识别显著的T细胞介导排斥活性,即使微血管炎症最小.
- 这些发现表明排斥的分子连续性,在一些caTCMR和边界/急性TCMR病例中观察到混合排斥模式 (TCMR和AMR).
- 需要进一步验证以确认这些初步观察,并将分子诊断纳入caTCMR管理.
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