聚环芳暴露与老年人认知表现之间的关联:NHANES 2011-2014年的横截面研究
Zerong Guan1, Xueqiong Weng2, Ligang Zhang3
1The First Affiliated Hospital, Jinan University, Guangzhou 510630, China.
Environmental science. Processes & impacts
|July 2, 2024
概括
多环芳 (PAHs) 暴露可能对老年人的认知功能产生负面影响,影响即时回忆,延迟回忆和符号替代测试. 一些PAH代谢物显示与认知表现的非线性关联.
科学领域:
- 环境健康 环境健康
- 神经科学是一个神经科学.
- 老年学是一门学科.
背景情况:
- 多环芳 (PAH) 是已知的神经毒素,但它们对成年人认知的影响,特别是关于非线性和混合暴露的影响,仍未得到充分研究.
- 了解PAH暴露和老年人群认知衰退之间的关系对于公共卫生至关重要.
- 这项研究解决了有关PAHs与老年人认知功能之间的复杂关联的知识差距.
研究的目的:
- 调查多重多环芳 (PAH) 的同时暴露与美国老年人认知测试表现之间的非线性和联合关联.
- 为了确定特定的PAH代谢物,这些代谢物有助于老年人群的认知障碍.
- 提供对影响老年人认知健康的环境风险因素的见解.
主要方法:
- 利用了2011-2014年国家健康和营养检查调查 (NHANES) 的横截面数据,其中包括772名60岁及以上的参与者.
- 使用受限立方线 (RCS) 和贝叶斯核机器回归 (BKMR) 来分析非线性和混合暴露效应.
- 通过四项测试评估认知功能:即时回忆测试 (IRT),延迟回忆测试 (DRT),动物流利性测试 (AFT) 和数字符号替代测试 (DSST),以及五种泌尿PAH代谢物.
主要成果:
- 在3-氧化 (3-FLUO) 和2-氧化 (2-FLUO) 与延迟回忆测试 (DRT) 分数之间观察到V形非线性关系.
- 总的来说,混合PAH暴露在即时回忆测试 (IRT),延迟回忆测试 (DRT) 和数字符号替代测试 (DSST) 的得分上呈现了负面趋势.
- 2-二 (2-FLUO) 是PAHs和IRT/DRT之间的负相关性的主要贡献者,而2-二 (2-NAP) 是DSST得分下降的关键因素.
结论:
- 美国老年人接触多环芳 (PAH) 可能与即时回忆测试 (IRT),延迟回忆测试 (DRT) 和数字符号替代测试 (DSST) 的表现差有关.
- 特定的PAH代谢物如2-FLUO和2-NAP在调解混合PAH暴露的负面认知影响方面发挥着重要作用.
- 建议进行进一步的前性研究,以证实这些关联,并阐明PAH神经毒性在老年人群中背后的机制.
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