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细颗粒物暴露和全身炎症:生物活性脂质的潜在调解作用

Wu Chen¹, Yiqun Han², Yifan Xu³

¹BIC-ESAT and SKL-ESPC, College of Environmental Sciences and Engineering, Center for Environment and Health, Peking University, Beijing, China; Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.

The Science of the total environment

|May 8, 2024

概括

细颗粒物 (PM2.5) 暴露会引发炎症. 胺-1-酸盐 (C1P) 和阿拉基酸 (ARA) 途径脂质调解了这种反应,将PM2.5与老年人系统性炎症联系起来.

科学领域:

环境健康环境健康
脂质代谢脂质代谢是什么
炎症生物学炎症生物学

背景情况:

暴露于细颗粒物 (PM2.5) 与不利的健康影响有关,主要是由炎症驱动的.
生物活性脂质,特别是酸 (ARA) 途径中的生物活性脂质,在调节炎症方面发挥着至关重要的作用,并受到PM2.5.5的影响.
胺-1-酸盐 (C1P) 是一种脂,对于启动ARA代谢至关重要.

研究的目的:

调查C1P在暴露于PM2.5后改变ARA代谢中的作用.
探索ARA途径的变化是否有助于由PM2.5.5诱导的全身炎症.
分析C1P和ARA代谢物对PM2.5和炎症之间关系的介导作用.

主要方法:

一项小组研究涉及中国北京112名老年人,从2013年至2015年持续对环境PM2.5进行监测.
量化血清细胞因子水平以评估系统性炎症.
在血液样本中测量了ARA途径中的多种生物活性脂质和三种C1P亚型,随后进行中介分析.

主要成果:

暴露于PM2.5与炎症性细胞因子和三个测量的C1P亚型有积极的关联.
调解分析显示,C1P显著调解了PM2.5暴露与ARA及其代谢物5,6-DHET之间的关联.
鉴定出ARA,5,6-DHET和白血乙4是对PM2.5暴露的全身炎症反应的调解者.

结论:

在ARA和脂代谢途径中的生物活性脂质被认为是PM2.5暴露后全身炎症的调解者.
在PM2.5引起的脂质体变化中,C1P起着至关重要的作用,将环境暴露与炎症途径联系起来.
了解这些脂质媒介提供了减轻与空气污染相关的健康风险的潜在目标.

关键词:

阿拉基酸是一种生物活性的脂质.颗粒物质颗粒物质是什么斯芬戈脂质是一种脂质.系统性炎症是一种系统性炎症.

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