空气污染:在寒冷的气候下,多发性硬化症的潜在危险因素
Nicola Chalmers1, Sophie St-Hilaire2
1American International School Hong Kong, Kowloon Tong, Hong Kong, SAR PR China.
概括
颗粒物污染 (PM2.5) 可能会增加多发性硬化症 (MS) 在美国寒冷地区的死亡率. 这种PM2.5和MS死亡率之间的温度依赖关系需要进一步调查.
科学领域:
- 环境流行病学环境流行病学
- 神经退行性疾病 神经退行性疾病
- 公共卫生 公共卫生
背景情况:
- 多发性硬化症 (MS) 是一种神经退行性疾病,其原因尚不清楚,影响女性的比例不成比例.
- 环境因素被怀疑为MS病因和进展做出贡献.
研究的目的:
- 调查美国县级PM2.5和女性MS死亡率之间的关联.
- 探索PM2.5暴露和MS死亡率之间的潜在温度依赖关系.
主要方法:
- 使用美国疾病预防控制中心 (1999-2006) 的公开数据进行的生态观测研究.
- 根据年龄调整的女性多发性硬化症死亡率与县级PM2.5,紫外线指数和家庭收入中位数相关的分析.
- 分析的分层基于县的冬季温度 (更冷或更热).
主要成果:
- 在寒冷冬季的县里,平均PM2.5和MS死亡率之间发现了显著的积极关联,即使控制了紫外线指数和收入.
- 这种PM2.5-MS死亡率相关性在冬季较温暖的县里没有观察到.
- 较冷的县在总体上表现出更高的MS死亡率,而不依赖于UV和PM2.5水平.
结论:
- 研究结果表明,PM2.5空气污染和MS死亡率之间存在温度相关的联系.
- 环境因素,特别是寒冷气候中的空气质量,可能会在MS的结果中发挥作用.
- 需要进一步的研究来阐明这种观察到的关联背后的机制.
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