早期和晚期的微血管炎症有不同的病因原因和临床表现
Brian J Nankivell1, Seethalakshmi Viswanathan2
1Department of Renal Medicine, Westmead Hospital, Westmead, NSW, Australia.
Transplantation
|September 30, 2024
概括
移植中的微血管炎症 (MVI) 随着时间的推移而发生变化,早期的MVI与AMR和良好的结果有关,而晚期的MVI表明由于不粘附和AMR而造成的移植存活率较低.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 移植免疫学 移植免疫学
- 病理学 病理学 病理学
背景情况:
- 微血管炎症 (MVI) 是移植中抗体介导排斥 (AMR) 的一个关键特征.
- 移植后时间对MVI临床病理表现的影响尚不清楚.
研究的目的:
- 研究微血管炎症 (MVI ≥2) 的时间如何影响其临床病理学特征以及对移植结果的影响.
- 确定与早期与晚期MVI相关的风险因素和后果.
主要方法:
- 对3398例移植活检进行了回顾性分析,其中202例MVI ≥2被确定.
- 活检是根据移植后9个月的中位发病时间进行二分化.
- 早期和晚期MVI组和对照组之间的临床病理特征,风险因素和移植存活率的比较.
主要成果:
- MVI ≥2发生在12.4%的移植患者中,并且与更高的失败率有关.
- 早期MVI (9个月前) 与延迟的移植功能,先前的AMR和捐赠者特异性抗体 (DSAs) 相关,通常呈现为AMR或细胞排斥,结果良好.
- 晚期MVI (9个月后) 与非粘附性,免疫抑制不足和AMR等因素有关,显示了更严重的间歇性纤维化,管状缩,C4d沉积和较差的移植存活率.
结论:
- MVI表达的时间变化是由不同的机制驱动的,包括免疫抑制和AMR相关的微血管损伤.
- 这些依赖时间的MVI差异显著影响移植功能和长期存活率.
- 解决不坚持和优化免疫抑制对于管理晚期MVI和改善移植结果至关重要.
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