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Long-Term Ambient Air Pollution Exposures and Brain Imaging Markers in Korean Adults: The Environmental Pollution-Induced Neurological EFfects (EPINEF) Study

 Jaelim Cho  ;  Young Noh  ;  Sun Young Kim  ;  Jungwoo Sohn  ;  Juhwan Noh  ;  Woojin Kim  ;  Seong-Kyung Cho  ;  Hwasun Seo  ;  Gayoung Seo  ;  Seung-Koo Lee  ;  Seongho Seo  ;  Sang-Baek Koh  ;  Sung Soo Oh  ;  Hee Jin Kim  ;  Sang Won Seo  ;  Dae-Seock Shin  ;  Nakyoung Kim  ;  Ho Hyun Kim  ;  Jung Il Lee  ;  Changsoo Kim 
 ENVIRONMENTAL HEALTH PERSPECTIVES, Vol.128(11) : 117006, 2020-11 
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Background: Only a limited number of neuroimaging studies have explored the effects of ambient air pollution in adults. The prior studies have investigated only cortical volume, and they have reported mixed findings, particularly for gray matter. Furthermore, the association between nitrogen dioxide (NO2 NO2 ) and neuroimaging markers has been little studied in adults. Objectives: We investigated the association between long-term exposure to air pollutants (NO2 NO2 , particulate matter (PM) with aerodynamic diameters of ≤10μm ≤10μm (PM10) and ≤2.5μm ≤2.5μm (PM2.5), and neuroimaging markers. Methods: The study included 427 men and 530 women dwelling in four cities in the Republic of Korea. Long-term concentrations of PM10, NO2 NO2 , and PM2.5 at residential addresses were estimated. Neuroimaging markers (cortical thickness and subcortical volume) were obtained from brain magnetic resonance images. A generalized linear model was used, adjusting for potential confounders. Results: A 10-μg/m3 10-μg/m3 increase in PM10 was associated with reduced thicknesses in the frontal [−0.02mm -0.02mm (95% CI: −0.03 -0.03 , −0.01 -0.01 )] and temporal lobes [−0.06mm -0.06mm (95% CI: −0.07 -0.07 , −0.04 -0.04 )]. A 10-μg/m3 10-μg/m3 increase in PM2.5 was associated with a thinner temporal cortex [−0.18mm -0.18mm (95% CI: −0.27 -0.27 , −0.08 -0.08 )]. A 10-ppb increase in NO2 NO2 was associated with reduced thicknesses in the global [−0.01mm -0.01mm (95% CI: −0.01 -0.01 , 0.00)], frontal [−0.02mm -0.02mm (95% CI: −0.03 -0.03 , −0.01 -0.01 )], parietal [−0.02mm -0.02mm (95% CI: −0.03 -0.03 , −0.01 -0.01 )], temporal [−0.04mm -0.04mm (95% CI: −0.05 -0.05 , −0.03 -0.03 )], and insular lobes [−0.01mm -0.01mm (95% CI: −0.02 -0.02 , 0.00)]. The air pollutants were also associated with increased thicknesses in the occipital and cingulate lobes. Subcortical structures associated with the air pollutants included the thalamus, caudate, pallidum, hippocampus, amygdala, and nucleus accumbens. Discussion: The findings suggest that long-term exposure to high ambient air pollution may lead to cortical thinning and reduced subcortical volume in adults. https://doi.org/10.1289/EHP7133.
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1. College of Medicine (의과대학) > Dept. of Preventive Medicine and Public Health (예방의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Woojin(김우진) ORCID logo https://orcid.org/0000-0001-5520-4228
Kim, Chang Soo(김창수) ORCID logo https://orcid.org/0000-0002-5940-5649
Noh, Juhwan(노주환) ORCID logo https://orcid.org/0000-0003-0657-0082
Lee, Seung Koo(이승구) ORCID logo https://orcid.org/0000-0001-5646-4072
Cho, Jae Lim(조재림)
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