醇和氧化应激在确定工程石灰尘毒性的结合作用
Cristina Pavan1,2,3, Marianna Fimiani1,2, Stefania Cananà1,2
1Department of Chemistry, University of Turin, Turin 10125, Italy.
ACS organic & inorganic Au
|February 9, 2026
概括
人工石灰尘会导致. 在模拟的肺液中化会降解树脂,暴露有毒的西兰醇,并释放金属离子,增加肺损伤潜力.
科学领域:
- 职业健康 职业健康 职业健康
- 材料科学 材料科学 材料科学
- 毒理学 毒理学 毒理学
背景情况:
- 工程石材 (ES) 处理产生可呼吸的晶体二氧化,导致ES症的职业健康危机日益严重.
- 在工人中观察到的严重肺病与有限的体外研究效应形成鲜明对比,突出了对ES尘埃毒性机制的理解上的差距.
研究的目的:
- 在模拟的肺液中化后,研究ES尘埃的表面化学和反应性.
- 阐明ES粉尘引起的肺损伤背后的机制,重点关注膜损伤和基质形成.
主要方法:
- 在人工溶解体液 (ALF) 和博溶液 (GS) 中化ES粉尘.
- 使用红细胞 (RBC) 测试来评估膜解活性.
- 用红外光谱 (H/D交换) 和电子偏磁共振 (EPR) 光谱进行了表面化学分析,用于激素检测.
主要成果:
- 纯净的ES粉尘显示了最小的膜分解活性.
- 在ALF中化显著增加了膜解活性,与树脂降解和几乎自由的西拉诺 (NFS) 组的暴露有关.
- ALF化还释放了过渡金属离子,催化了基和基激素的形成,与GS暴露不同.
结论:
- 肺细胞环境,特别是溶解体,促进ES粉尘树脂的降解,暴露反应性西兰醇并释放过渡金属.
- 这些过程为ES尘埃赋予了膜解和氧化潜力,解释了其毒性.
- 调查结果强调了对复合材料更安全的职业实践和安全设计策略的需要.
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