炉排放会通过促进呼吸道上皮细胞中的铁亡来加剧过敏性喘
Xian Chen1, Hongguang Chen1, Pimei Zhang1
1Department of Toxicology, School of Public Health, Qingdao University, Qingdao, Shandong 266021, China.
Journal of hazardous materials
|August 18, 2024
概括
炉排放 (COEs) 在暴露于家用灰尘 (HDM) 的小鼠中恶化过敏喘. 这项研究揭示了铁亡作为一个关键机制,表明了职业喘潜在的新疗法.
科学领域:
- 环境健康 环境健康
- 肺部病理学 肺部病理学
- 毒理学 毒理学 毒理学
背景情况:
- 流行病学研究将焦炭炉排放量 (COE) 与喘恶化联系起来.
- 缺乏直接将COE与喘恶化联系起来的实验证据.
研究的目的:
- 在小鼠模型中研究COEs对室内灰尘 (HDM) 诱导的过敏性喘的影响.
- 为了阐明底层机制,专注于铁灭.
主要方法:
- 小鼠被暴露在COEs,HDM或两者之间.
- 评估了气道炎症,重塑和过敏反应.
- 测量了铁,MDA,Ptgs2和GPX4的水平.
- 在体外和体内实验中使用了德胺 (DFO) 和3-甲基亚丁氨酸 (3-MA) 来研究ferroptosis抑制.
主要成果:
- 与单个暴露相比,对COEs和HDM的联合暴露显著加剧了过敏性喘.
- 在联合暴露组中观察到铁和MDA的增加,Ptgs2的增加和GPX4表达的减少.
- DFO抑制了COE和HDM诱导的ferroptosis在体外和活体中的过敏性喘.
- 费里提诺法基被确定为COE + HDM诱导的铁死的一个关键过程.
结论:
- COEs通过ferroptosis加剧HDM诱导的过敏喘.
- 在这个过程中,ferritinophagy 起着至关重要的作用.
- 向铁亡,可能使用像DFO这样的药物,可能为与COEs相关的职业喘提供治疗效益.
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