移植后循环胺基预防及其对感染并发症和免疫复原的影响根据捐赠者类型
Beatriz Merchán-Muñoz1, María Suárez-Lledó1, Luis Gerardo Rodríguez-Lobato1,2
1Hematopoietic Transplantation Unit, Hematology Department, Institute of Cancer and Blood Diseases (ICAMS), Hospital Clínic Barcelona, 08036 Barcelona, Spain.
Cancers
|April 14, 2025
概括
同源性造血细胞移植 (allo-HCT) 与移植后循环胺 (PTCY) 预防显示出高早期感染率. 经过六个月后,免疫复合得到改善,减少了无论捐赠者类型的感染.
科学领域:
- 血液学 血液学 血液学
- 免疫学 免疫学 免疫学
- 传染性疾病 传染性疾病
背景情况:
- 全基性血造细胞移植 (allo-HCT) 是血液恶性瘤的关键治疗方法.
- 移植后循环胺 (PTCY) 越来越多地用于移植对宿主疾病 (GVHD) 预防.
- 了解传染性并发症和免疫复合对于优化alo-HCT结果至关重要.
研究的目的:
- 为了评估继 allo-HCT 与基于 PTCY 的 GVHD 预防后的感染性并发症.
- 在接受allo-HCT的成年患者中评估免疫复原.
- 为了比较不同类型的捐赠者的结果:HLA匹配,不匹配的无血缘捐赠者 (MMUD) 和单一的捐赠者.
主要方法:
- 对253名接受PTCY预防治疗的成年患者进行了回顾性分析.
- 移植来源包括与HLA匹配的,MMUD的,以及与Haploidentical相同的捐赠者.
- 感染并发症,GVHD和免疫复合标记 (CD4+,CD8+T细胞,IgG) 被监测.
主要成果:
- 观察到高发病率的细菌血流感染 (BSI) 和细胞巨乳病毒 (CMV) 再激活,特别是在MMUD.
- 人类疹病毒6 (HHV-6) 的重新激活趋势在单一移植中更高;在MMUD中,BK病毒相关的出血性囊炎.
- 免疫复合,包括CD4 +,CD8 + T细胞和IgG的正常化,在移植后180天内实现,不论捐赠者类型如何.
结论:
- 接受PTCY预防的alo-HCT患者在移植后的早期面临重大感染风险.
- 六个月后,随着免疫复合的进展,感染率大幅下降.
- 在这种基于PTCY的疗法中,免疫恢复和传染性并发症模式在很大程度上独立于供体类型.
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