现代发动机的排放会在人体嗅觉粘膜细胞中产生不同的影响,这取决于燃料和后处理
Laura Mussalo1, Simone Avesani2, Muhammad Ali Shahbaz1
1A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, 70210 Kuopio, Finland.
The Science of the total environment
|September 14, 2023
概括
柴油排气中的超细颗粒 (UFP) 显著改变嗅觉粘膜细胞,可再生柴油显示的不良影响比化石柴油少. 现代车辆的后处理有效地减少了UFP的危害.
科学领域:
- 环境健康 环境健康
- 毒理学 毒理学 毒理学
- 细胞生物学 细胞生物学
背景情况:
- 来自交通排放的超细颗粒 (UFP) 导致空气污染,但它们对健康的影响尚未完全理解.
- 嗅觉粘膜 (OM) 直接暴露于空气中的污染物,并与大脑通路联系在一起.
- 对空气污染物OM反应的机制需要进一步研究.
研究的目的:
- 调查来自不同柴油燃料和发动机的UFPs对原始人类OM细胞的健康影响.
- 为了比较可再生柴油与化石柴油对UFP的细胞反应.
- 评估现代车辆后处理系统在减轻UFP毒性的有效性.
主要方法:
- 主要人类OM细胞暴露于使用可再生和化石柴油燃料的重型和现代柴油发动机的UFP.
- 细胞功能和转录基因变化的分析.
- 粒子表征以确认UFP大小 (≤0.1微米).
主要成果:
- 来自可再生能源 (A0) 和化石 (A20) 柴油的UFP暴露导致炎症反应,异生物代谢,嗅觉信号和上皮完整性的显著改变.
- 来自现代柴油车 (Euro6) 的UFP与后处理造成了微不足道的变化.
- 与化石柴油 (A20) 相比,可再生柴油 (A0) 对OM电池产生较少明显的不良影响.
结论:
- 柴油排气中的UFPs可能会对人类嗅觉粘膜细胞产生不利影响.
- 与化石柴油相比,可再生柴油在OM暴露方面可能是一个不那么有毒的替代品.
- 现代汽车后处理系统有效地减少了UFPs对嗅觉粘膜的有害影响.
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