臭氧生成方法影响肺毒性和氧化剂信号传递
Atefeh Razazan1,2, Md Habibul Hasan Mazumder1,2, William Travis Goldsmith1,2
1Department of Physiology, Pharmacology, and Toxicology.
概括
臭氧 (O3) 生成方法对肺部损伤有影响. 使用过空气生产O3,而不是纯氧,增加了氧化 (NOx) 和肺炎,特别是与黑碳颗粒相结合时.
科学领域:
- 环境健康 环境健康
- 毒理学 毒理学 毒理学
- 呼吸系统医学 呼吸系统医学
背景情况:
- 臭氧 (O3) 是一种污染物,预计由于气候变化而增加.
- 氧气生成方法可以产生不同数量的氧化 (NOx) 作为副产品.
- 在O3生成过程中对NOx的不一致监测可能解释不同的实验结果.
研究的目的:
- 为了比较过空气产生的O3与纯氧对NOx生产和肺部损伤的影响.
- 调查O3产生源对O3和碳黑 (CB) 混合暴露的影响.
主要方法:
- 从过空气 (FA-臭氧) 与纯氧 (氧-臭氧) 中生成的O3的比较.
- 评估NOx生成和肺损伤标志物 (炎症,蛋白质尼托铁,乙酸蛋白招募).
- 混合暴露的评估:FA-臭氧-CB与氧-臭氧-CB.
主要成果:
- 过空气产生的臭氧 (FA-臭氧) 与纯氧产生的臭氧 (Oxy-臭氧) 相比,导致肺炎和损伤的增加.
- 对FA-ozone-CB的暴露导致肺部NOx和蛋白质尼托铁素的形成较高,而不是Oxy-ozone-CB.
- 在FA-臭氧-CB组中观察到埃索诺菲尔的招募,但在Oxy-ozone-CB组中没有.
结论:
- 用于O3生成的氧气来源显著影响实验结果,包括肺损伤.
- 在O3暴露研究中,对物种进行一致的测量和报告至关重要.
- 了解O3生成副产品对于准确的暴露评估和毒理学研究至关重要.
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