德克萨米他减弱了COVID-19患者中与干扰素相关的细胞因子过敏反应
Job J Engel1, Caspar I van der Made1, Nick Keur1
1Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, Netherlands.
Frontiers in immunology
|August 24, 2023
概括
德克萨米他通过抑制有害的细胞因子反应和干扰素信号传递来减少严重的COVID-19中的炎症. 这种类固醇治疗通过减轻高炎症,有利于患有严重疾病的患者,但可能会伤害轻度症状患者.
科学领域:
- 免疫学 免疫学 免疫学
- 药理学 药理学是指药理学的学科.
背景情况:
- 德克萨米他提高了依赖氧气的COVID-19患者的生存率.
- 德克萨米他在COVID-19中的确切免疫机制尚未完全理解.
研究的目的:
- 研究德克萨米他对COVID-19患者免疫反应的体外和体内影响.
- 阐明甲调节的免疫机制.
主要方法:
- 结合功能性免疫学测定和基于OMICS的方法.
- 在德克萨梅他治疗前后分析全血转录和血蛋白质组.
- 评估了外周血液单核细胞 (PBMC) 对SARS-CoV-2活体刺激的反应,使用或不使用德克萨.
主要成果:
- 德克萨米他抑制了PBMC中SARS-CoV-2诱导的化学和细胞的产生.
- 德克萨米他治疗降低了患者免疫细胞中的I型和II型干扰素信号.
- ISG15,TNF,IL-6,CCL2,CXCL8和CXCL10的循环水平被德甲降低,与疾病严重程度相关.
结论:
- 德克萨米他通过向有助于COVID-19细胞因子过敏反应的途径,包括I/II型IFN信号,产生抗炎作用.
- 在严重的COVID-19中,有益的效应源于减少过度炎症.
- 在轻度的COVID-19中,潜在的不良影响可能来自抑制早期干扰素反应.
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