Exposure to Ambient Air Particles Increases the Risk of Mental Disorder: Findings from a Natural Experiment in Beijing

被引:46
作者
Jia, Zhen [1 ]
Wei, Yongjie [2 ,3 ]
Li, Xiaoqian [2 ,3 ]
Yang, Lixin [2 ,3 ]
Liu, Huijie [2 ,3 ]
Guo, Chen [2 ,3 ]
Zhang, Lulu [2 ,3 ]
Li, Nannan [2 ,3 ]
Guo, Shaojuan [2 ,3 ]
Qian, Yan [2 ,3 ]
Li, Zhigang [2 ,3 ]
机构
[1] Chinese Acad Sci, Beijing Inst Life Sci, Beijing 100000, Peoples R China
[2] Chinese Res Inst Environm Sci, Lab Environm Criteria & Risk Assessment, Beijing 100000, Peoples R China
[3] Chinese Res Inst Environm Sci, Environm Stand Inst, Beijing 100000, Peoples R China
基金
中国国家自然科学基金;
关键词
PM2.5; mental disorder; glucocorticoid receptors; glucocorticoid; inflammation; MAJOR DEPRESSIVE DISORDER; PARTICULATE MATTER; POLLUTION; STRESS; AUTISM; COHORT; BRAIN; COGNITION; CORTISOL; DISEASE;
D O I
10.3390/ijerph15010160
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Epidemiology studies indicated that air pollution has been associated with adverse neurological effects in human. Moreover, the secretion of glucocorticoid (GC) affects the mood regulation, and the negative feedback of hippocampal glucocorticoid receptors (GR) inhibits the GC secretion. Meanwhile, the over secretion of GC can interfere the immune system and induce neurotoxicity. In the present study, the human test showed that the secretion of the cortisol in plasma was elevated after exposure in heavy air pollution. In the mouse model, we found that breathing the highly polluted air resulted in the negative responses of the mood-related behavioral tests and morphology of hippocampus, as well as the over secretion of GC in plasma, down regulation of GR, and up-regulation of cytokine and chemokine in the hippocampus. When considering the interrelated trends between the hippocampal GR, inflammatory factors, and plasmatic GC, we speculated that PM2.5 exposure could lead to the increased secretion of GC in plasma by decreasing the expression of GR in hippocampus, which activated the inflammation response, and finally induced neurotoxicity, suggesting that PM2.5 exposure negatively affects mood regulation. When combined with the results of the human test, it indicated that exposure to ambient air particles increased the risk of mental disorder.
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页数:12
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