每立方厘米中累积污染物每增加3.49微克,脑白质就会减少6.23立方厘米,相当于大脑衰老一到两年。根据多个变量进行了调整后,这种相关性依然存在。
Previous studies have shown that air pollution can cause inflammation and damage to the vascular system, but this study, in The Annals of Neurology, showed damage to the brain itself.
之前的研究表明,空气污染可能会导致血管系统发炎受损,而发表在《神经学年报》(The Annals of Neurology)上的这项研究表明,空气污染会导致大脑受损。
“This tells us that the damage air pollution can impart goes beyond the circulatory system,” said the lead author, Dr. Jiu-Chiuan Chen, an associate professor of preventive medicine at the Keck School of Medicine at the University of Southern California. “Particles in the ambient air are an environmental neurotoxin to the aging brain.”
“这告诉我们,空气污染带来的危害不仅限于循环系统,”文章的第一作者、南加州大学凯克医学院(Keck School of Medicine at the University of Southern California)预防医学副教授陈居泉(Jiu-Chiuan Chen)博士说。“对日渐衰老的大脑来说,周围空气中的颗粒物是自然环境中的神经毒素。”
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