公共卫生 公共卫生
Kathryn C Conlon1, Amanda Goodrich2, Stacey Alexeeff3
1University of California, Davis, Davis, CA, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 23, 2025
概括
来自野火的超细颗粒物 (PM0.1) 与非拉丁裔白人老年人的认知能力下降有关. 需要进一步研究野火对认知的影响.
科学领域:
- 环境健康 环境健康
- 神经科学是一个神经科学.
- 流行病学 流行病学
背景情况:
- 细颗粒物 (PM2.5) 与心血管疾病和痴呆症有关.
- 超细颗粒物 (PM0.1) 对认知的影响尚未得到充分研究,尤其是在不同人群中.
- 由于PM0.1的体积较小,使其能够更好地被血液吸收.
研究的目的:
- 调查长期暴露于PM0.1和老年人的认知功能之间的关联.
- 检查PM0.1-认知关系中的种族和民族的影响修改.
- 评估来自特定来源的PM0.1的影响,包括野生城市界面 (WUI).
主要方法:
- 利用了KHANDLE研究中的1648名成年人 (≥65) 和STAR研究中的746名非洲裔美国人的数据.
- 使用西班牙语和英语神经心理评估尺度评估认知结果 (语义记忆,口头情节性记忆,执行功能).
- 使用化学运输模型生成PM0.1暴露数据,并采用线性回归,调整共变量并根据种族/种族评估影响的修改.
主要成果:
- 在主要效应模型中没有发现总体关联.
- 在所有认知领域的5年WUI PM0.1暴露期间,观察到种族/种族的显著效果修改.
- 在非拉丁裔白人参与者中,增加WUI PM0.1暴露与认知功能下降有关;对于更长的暴露时间,相关性减弱.
结论:
- 长期暴露于WUI PM0.1与非拉丁裔白人老年人的认知功能下降有关.
- 野火构成越来越大的威胁,需要对其认知影响进行进一步的研究.
- 研究结果强调需要考虑特定的PM0.1来源以及暴露与健康关系中的种族/种族差异.
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