在人体支气管细胞中,组成上不同的热喷雾颗粒在体外毒性的比较
E S Burns1, R E Harner1,2, V Kodali1
1Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV, United States.
Toxicology reports
|December 24, 2024
概括
热喷雾颗粒,类似于接烟雾,进行了毒性测试. 基于 (PMET540) 的热喷雾颗粒在人类支气管细胞中显示出最高的细胞毒性和DNA损伤.
科学领域:
- 材料科学 材料科学 材料科学
- 毒理学 毒理学 毒理学
- 细胞生物学 细胞生物学
背景情况:
- 热喷涂使用融材料增强了表面的性能.
- 双线弧热喷雾产生纳米到微米颗粒.
- 粒子形态类似于接烟雾,引发了人们的健康问题.
研究的目的:
- 对人类支气管细胞 (BEAS-2B) 进行不同热喷雾线组合的比较毒性研究.
- 评估细胞活力,细胞毒性,氧化应激,基因毒性和炎症标志物.
- 为了确定金属成分对细胞反应的影响.
主要方法:
- 电弧线热喷雾产生的颗粒来自 (PMET540),铁/ (PMET731) 和 (PMET885) 线.
- BEAS-2B细胞暴露于不同度 (0-200μg/mL) 的热喷雾颗粒.
- 测量了细胞活力 (活细胞计数),细胞毒性 (LDH释放),DNA损伤 (COMET分析),抗氧化能力和蛋白质标记物 (ET-1,IL-6,IL-8).
主要成果:
- 基于的PMET540表现出最高的细胞毒性,并诱导显著的DNA损伤和更高剂量的抗氧化剂度增加.
- 在PMET540暴露后观察到IL-6和IL-8水平升高,表明炎症.
- 在最高剂量时,PMET885 (基于) 显著增加了ET-1度.
结论:
- 热喷雾线的金属成分显著影响人类支气管细胞中毒理反应.
- 含的热喷雾颗粒具有更高的细胞毒性和基因毒性风险.
- 需要进一步的研究,以了解毒性的具体机制,并制定安全指南.
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