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来自垃圾站的PM2.5中的生物气溶的慢性暴露通过NF-κB/NLRP3通路加速了血管衰老

Peier Chen¹, Xiaodong Ning¹, Weijing Feng²

¹The Tenth Affiliated Hospital (Dongguan People's Hospital), The First School of Clinical Medicine, Southern Medical University, Dongguan, 523059, China.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)

|October 22, 2024

概括

来自垃圾站的细颗粒物 (PM2.5) 中的生物气溶暴露会加速血管衰老,增加心血管风险. 一种特定的细菌,AS22a,激活炎症通路,导致这些不良健康影响.

科学领域:

环境健康环境健康
心血管科学心血管科学
微生物学微生物学

背景情况:

微粒颗粒物 (PM2.5) 是一个重要的空气污染物,与不利的健康结果有关.
在PM2.5中的生物气溶可以诱导慢性炎症和血管衰老.
家庭垃圾站是空气中的生物气溶的潜在来源.

研究的目的:

研究来自家庭垃圾站的生物气溶对血管衰老的影响.
探索生物气溶诱导的血管衰老的潜在机制.
为了确定这些影响的特定微生物贡献者.

主要方法:

在体内研究评估衰老标志物,血管功能障碍和慢性生物气溶暴露后的重塑.
使用人类静脉内皮细胞 (HUVECs) 进行体外实验,以评估增殖,细胞循环停止和迁移.
从生物气溶社区中分离和描述特定细菌 (AS22a).
对NF-κB/NLRP3信号通路激活的分析.

主要成果:

长期暴露于生物气溶上调了衰老标志物和血管功能受损以及体内重塑.
在体外,生物气溶暴露减少了HUVEC的扩散,诱导G0/G1的停止,并影响了迁移.
隔离的细菌AS22a调节了炎症因素,加速了细胞衰老和血管衰老.
确定NF-κB/NLRP3信号通路的激活是关键机制.

结论:

来自家庭垃圾站的生物气溶有助于血管衰老,并可能增加心血管风险.
细菌AS22a通过NF-κB/NLRP3途径在血管衰老中发挥作用.
减少废物管理场所的生物气溶暴露对于心血管健康保护至关重要.

关键词:

在 NF-κB/NLRP3 中.对于PM2.5来说,这是一个很好的例子.生物气溶是一种生物气溶.垃圾站是一个垃圾站.血管衰老血管衰老

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