通过结合介导的相互作用是化学转换的聚乙烯微塑料通过的增强膜毒性的基础
Wanqing Zhao1, Tong Ye1, Jianwen Zhou1
1College of Environmental Science and Engineering, Hebei University of Science and Technology, Hebei Key Laboratory of Pollution Prevention Biotechnology, Shijiazhuang 050018, China.
Journal of hazardous materials
|August 23, 2024
概括
预处理增强了聚烯微塑料 (PS-MPs) 的毒性. Cd-PS-MPs会损害细胞膜,增加透性和氧化应激,造成更大的人类健康风险.
科学领域:
- 环境科学 环境科学
- 毒理学 毒理学 毒理学
- 材料科学 材料科学 材料科学
背景情况:
- 人们越来越关注微塑料污染及其对健康的影响.
- 我们对共存重金属如何影响微塑料毒性的理解有限.
- (Cd) 是一种常见的环境污染物,通常与微塑料一起发现.
研究的目的:
- 为了研究用 (Cd) 预处理的聚烯微塑料 (PS-MP) 的膜毒性.
- 阐明Cd预处理的PS-MPs增强毒性背后的机制.
主要方法:
- 利用模拟的脂质膜巨型单囊 (GUV) 来评估膜的完整性和流动性.
- 检查了红细胞和巨细胞的膜透性,蛋白质损伤和脂质过氧化.
- 分析了PS-MPs的表面特性 (粗性,水性) 以及它们与脂质双层的相互作用.
主要成果:
- 与未经处理的PS-MP相比,Cd预处理的PS-MP显著恶化了膜损伤.
- 在暴露细胞中观察到膜透性增加,蛋白质损伤和脂质过氧化.
- Cd预处理改变了PS-MP的表面特性,增强了与脂质双层的相互作用.
结论:
- 预处理放大了聚烯微塑料的膜毒性.
- 改变的表面特征和增强的脂质双层相互作用,特别是通过键,导致毒性增加.
- 调查结果强调了微塑料和重金属污染对人类健康的协同风险.
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