便微塑料与氧化损伤和心肺功能的关联:来自试点研究的证据
Lili Xiao1, Wenfeng Lu1, Lan Qiu1
1School of Public Health, Guangzhou Medical University, Guangzhou 511436, China.
Toxics
|January 28, 2026
概括
在人类便中检测到的微塑料暴露与氧化应激增加有关. 这项研究突出了微塑料 (MPs) 因其与氧化损伤生物标志物的关联而对健康的潜在亚临床影响.
科学领域:
- 环境健康科学 环境健康科学
- 毒理学 毒理学 毒理学
- 人类健康风险评估
背景情况:
- 微塑料 (MP) 是普遍存在的环境污染物.
- 它们对人类健康的潜在影响,特别是关于氧化应激和心肺功能,仍然在很大程度上是未知的.
- 量化人类暴露及其生物后果对于公共卫生至关重要.
研究的目的:
- 为了量化人类便中的微塑料 (MP) 暴露.
- 调查便MP水平与氧化应激生物标志物 (MDA,8-OHdG) 之间的关联.
- 评估MP暴露与心肺功能之间的关系.
主要方法:
- 一项小组研究涉及16名男性大学生,进行了重复测量.
- 使用红外微光谱学量化便中的微塑料.
- 尿路生物标志物 (MDA,8-OHdG) 和心肺功能测试评估了健康影响.
- 线性混合效应模型分析了MP暴露和健康结果之间的关联.
主要成果:
- 便MP量化显示了高的个体内变化和差的可重复性.
- 主要的MP类型是聚胺 (PA),聚,聚乙烯 (PE) 和聚烯的薄片和碎片 (100-200μm).
- 在MP水平和氧化损伤生物标志物之间发现了显著的积极关联:MDA (β=0.827) 和8-OHdG (β=1.11).
- 纤维MP和特定聚合物 (PE,PA) 是氧化损伤的关键驱动因素.
- 没有观察到MP暴露与肺功能或血压之间的显著联系.
结论:
- 人类便中微塑料的暴露与氧化损伤的增加显著相关.
- 这些发现强调了关于微塑料亚临床生物效应的迫切公共卫生问题.
- 需要进一步的研究来阐明微塑料暴露的机制和长期后果.
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