在患有严重的军团病的患者中,高炎症概况和免疫性麻
Camille Allam1,2, William Mouton3,4, Hugo Testaert2
1Centre National de Référence des Légionelles, Hôpital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, France.
Frontiers in cellular and infection microbiology
|November 15, 2023
概括
严重的军团士兵.
科学领域:
- 免疫学 免疫学 免疫学
- 传染性疾病 传染性疾病
- 关键护理医学 关键护理医学
背景情况:
- 军团士兵病 (LD) 可以导致严重的后果,包括多器官衰竭和死亡.
- 与败血症相比,在LD中的免疫反应,特别是超炎症和免疫衰竭,还不太清楚.
- 了解LD的免疫状况对于管理严重病例至关重要.
研究的目的:
- 为了评估入院的军团兵病患者的免疫状况.
- 调查免疫标志物与LD疾病严重程度之间的关联.
- 为了确定潜在的生物标志物来预测严重的LD结果.
主要方法:
- 在92名LD患者中量化了19种血细胞因子和19种Legionella的DNA负载.
- 在患者的全血样本上使用康卡纳瓦林A (conA) 或脂多糖 (LPS) 刺激进行了免疫功能检测 (IFA).
- 评估了顺序性器官衰竭评估 (SOFA) 评分和机械呼吸 (MV) 状态,以与免疫反应相关联.
主要成果:
- 七种细胞因子 (MCP-1,MIP1-β,IL-6,IL-8,IFN-γ,TNF-α,IL-17) 的升高水平与LD患者的SOFA得分和机械通风率较高有关.
- 与健康志愿者相比,LD患者在conA刺激后对大多数细胞因子的分泌能力降低,但IL-18和MCP-1释放量增加.
- 在LPS刺激后,LD患者观察到TNF-α分泌量的减少,与机械通风状态有关.
结论:
- 军团士兵病包括最初的超炎症阶段,在严重病例中更为明显.
- 患有LD的患者表现出混合免疫反应,与广泛的细胞因子抑制 (免疫衰竭) 以及增加IL-18分泌.
- 评估LD中的免疫反应可能有助于识别针对目标宿主导疗法的患者.
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