低温可以通过限制IL-1β释放和NETs形成来防止呼吸器诱导的肺损伤
Nobuyuki Nosaka1,2, Vanessa Borges1,2, Daisy Martinon1,2
1Department of Pediatrics, Division of Infectious Diseases and Immunology, Guerin Children's at Cedars-Sinai Medical Center, Los Angeles, United States.
eLife
|June 24, 2025
概括
治疗性低温可以防止机械通风引起的急性呼吸衰竭. 降低体温可以通过调节炎症途径来减少肺炎和损伤.
科学领域:
- 免疫学 免疫学 免疫学
- 关键护理医学 关键护理医学
- 肺部医学 肺部医学
背景情况:
- 机械通风虽然对急性呼吸困扰综合征 (ARDS) 至关重要,但可以诱导肺损伤.
- 呼吸器诱导的肺损伤 (VILI) 与白蛋白-1β (IL-1β) 和中性粒细胞外细胞陷 (NETs) 有关.
研究的目的:
- 调查IL-1受体1 (IL-1R1) 信号在VILI中的作用.
- 评估低温症在缓解VILI方面的治疗潜力.
主要方法:
- 使用了由脂聚糖 (LPS) 和高体积通风 (HVV) 诱导的VILI的小鼠模型.
- 评估IL-1R1缺乏和治疗性低温 (TH) 对VILI标志物的影响.
- 在低温条件下检查了NLRP3炎症酶激活和IL-1β在巨细胞中的释放.
主要成果:
- IL-1R1信号传递对于LPS-HVV诱导的低氧化和NETs形成至关重要.
- 在LPS-HVV小鼠中,治疗性低温 (32°C) 预防了低氧化,减少了白蛋白泄漏,IL-1β,气皮素D (GSDMD) 裂变和NETs形成.
- 低温减弱了NLRP3炎症酶激活和IL-1β从用ATP或尼日里辛刺激的LPS主导巨细胞释放.
结论:
- IL-1R1信号传递在VILI病变发生过程中起着关键作用.
- 治疗性低温有效地预防机械通风引起的急性呼吸衰竭.
- 低温调节NLRP3炎症酶激活,IL-1β释放和NETs形成,提供对VILI的保护策略.
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