Reduced ambient PM2.5, better lung function, and decreased risk of chronic obstructive pulmonary disease
Background: Several studies reported that long-term exposure to fine particulate matter (PM2.5) was associated with an increased risk of chronic obstructive pulmonary disease (COPD). It remains unclear whether reduced PM2.5 can decrease the risk of COPD development. Objective: To investigate the ass...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-11-01
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| Series: | Environment International |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0160412021003317 |
| _version_ | 1818607595793940480 |
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| author | Yacong Bo Ly-yun Chang Cui Guo Changqing Lin Alexis K.H. Lau Tony Tam Xiang Qian Lao |
| author_facet | Yacong Bo Ly-yun Chang Cui Guo Changqing Lin Alexis K.H. Lau Tony Tam Xiang Qian Lao |
| author_sort | Yacong Bo |
| collection | DOAJ |
| description | Background: Several studies reported that long-term exposure to fine particulate matter (PM2.5) was associated with an increased risk of chronic obstructive pulmonary disease (COPD). It remains unclear whether reduced PM2.5 can decrease the risk of COPD development. Objective: To investigate the associations of dynamic changes (including deterioration and improvement) in long-term exposure to ambient PM2.5 with changes in lung function and the incidence of COPD. Methods: A total of 133,119 adults (aged 18 years or older) were recruited in Taiwan between 2001 and 2014. All participants underwent at least two standard medical examinations including spirometry test. We estimated PM2.5 concentrations using a high-resolution (1 km2) satellite-based spatio-temporal model. The change in PM2.5 (ΔPM2.5) was defined as the difference in concentration of PM2.5 between the respective visit and the previous visit. We used a multivariable mixed linear model and time-varying Cox model to investigate the associations of change in PM2.5 with annual change of lung function and the incidence of COPD, respectively. Result: The PM2.5 concentration in Taiwan increased during 2002–2004 and began to decrease around 2005. Every 5-µg/m3/year decrease in the annual change of PM2.5 (i.e., ΔPM2.5/year of 5 µg/m3/year) was associated with an average increase of 19.93 mL/year (95 %CI: 17.42,22.43) in forced expiratory volume in 1 s (FEV1), 12.76 mL/year (95 %CI: 9.84,15.66) in forced vital capacity (FVC), 70.22 mL/s/year (95 %CI: 64.69,76.16) in midexpiratory flow between 25 and 75% of the forced vital capacity (MEF25-75), 0.27%/year (95 %CI: 0.21%, 0.32%) in FEV1/FVC/year. Every 5 µg/m3 decrease in PM2.5 (i.e., ΔPM2.5 of 5 µg/m3) was associated with a 12% (95 %CI: 7%, 17%) reduced risk of COPD development. The stratified and sensitivity analyses generally yielded similar results. Conclusion: An improvement in PM2.5 pollution exposure was associated with an attenuated decline in lung function parameters of FEV1, FVC, MEF25-75, and FEV1/FVC, and a decreased risk of COPD development. Our findings suggest that strategies aimed at reducing air pollution may effectively combat the risk of COPD development. |
| first_indexed | 2024-12-16T14:29:15Z |
| format | Article |
| id | doaj.art-1cc9622bd50b4dd3b3d71ee32bad4e71 |
| institution | Directory Open Access Journal |
| issn | 0160-4120 |
| language | English |
| last_indexed | 2024-12-16T14:29:15Z |
| publishDate | 2021-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Environment International |
| spelling | doaj.art-1cc9622bd50b4dd3b3d71ee32bad4e712022-12-21T22:28:16ZengElsevierEnvironment International0160-41202021-11-01156106706Reduced ambient PM2.5, better lung function, and decreased risk of chronic obstructive pulmonary diseaseYacong Bo0Ly-yun Chang1Cui Guo2Changqing Lin3Alexis K.H. Lau4Tony Tam5Xiang Qian Lao6Jockey Club School of Public Health and Primary Care, the Chinese University of Hong Kong, Hong Kong; Department of Nutrition and Food Hygiene, School of Public Health, Zhengzhou University, ChinaGratia Christian College, Hong Kong; Institute of Sociology, Academia Sinica, TaiwanJockey Club School of Public Health and Primary Care, the Chinese University of Hong Kong, Hong KongDivision of Environment and Sustainability, the Hong Kong University of Science and Technology, Hong KongDivision of Environment and Sustainability, the Hong Kong University of Science and Technology, Hong Kong; Department of Civil and Environmental Engineering, the Hong Kong University of Science and Technology, Hong KongDepartment of Sociology, the Chinese University of Hong Kong, Hong KongJockey Club School of Public Health and Primary Care, the Chinese University of Hong Kong, Hong Kong; Shenzhen Research Institute of The Chinese University of Hong Kong, Shenzhen, China; Corresponding author at: Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, 4/F School of Public Health, Prince of Wales Hospital, Sha Tin, N.T., Hong Kong.Background: Several studies reported that long-term exposure to fine particulate matter (PM2.5) was associated with an increased risk of chronic obstructive pulmonary disease (COPD). It remains unclear whether reduced PM2.5 can decrease the risk of COPD development. Objective: To investigate the associations of dynamic changes (including deterioration and improvement) in long-term exposure to ambient PM2.5 with changes in lung function and the incidence of COPD. Methods: A total of 133,119 adults (aged 18 years or older) were recruited in Taiwan between 2001 and 2014. All participants underwent at least two standard medical examinations including spirometry test. We estimated PM2.5 concentrations using a high-resolution (1 km2) satellite-based spatio-temporal model. The change in PM2.5 (ΔPM2.5) was defined as the difference in concentration of PM2.5 between the respective visit and the previous visit. We used a multivariable mixed linear model and time-varying Cox model to investigate the associations of change in PM2.5 with annual change of lung function and the incidence of COPD, respectively. Result: The PM2.5 concentration in Taiwan increased during 2002–2004 and began to decrease around 2005. Every 5-µg/m3/year decrease in the annual change of PM2.5 (i.e., ΔPM2.5/year of 5 µg/m3/year) was associated with an average increase of 19.93 mL/year (95 %CI: 17.42,22.43) in forced expiratory volume in 1 s (FEV1), 12.76 mL/year (95 %CI: 9.84,15.66) in forced vital capacity (FVC), 70.22 mL/s/year (95 %CI: 64.69,76.16) in midexpiratory flow between 25 and 75% of the forced vital capacity (MEF25-75), 0.27%/year (95 %CI: 0.21%, 0.32%) in FEV1/FVC/year. Every 5 µg/m3 decrease in PM2.5 (i.e., ΔPM2.5 of 5 µg/m3) was associated with a 12% (95 %CI: 7%, 17%) reduced risk of COPD development. The stratified and sensitivity analyses generally yielded similar results. Conclusion: An improvement in PM2.5 pollution exposure was associated with an attenuated decline in lung function parameters of FEV1, FVC, MEF25-75, and FEV1/FVC, and a decreased risk of COPD development. Our findings suggest that strategies aimed at reducing air pollution may effectively combat the risk of COPD development.http://www.sciencedirect.com/science/article/pii/S0160412021003317Particulate matterAir quality improvementLung functionChronic obstructive pulmonary diseaseCohort |
| spellingShingle | Yacong Bo Ly-yun Chang Cui Guo Changqing Lin Alexis K.H. Lau Tony Tam Xiang Qian Lao Reduced ambient PM2.5, better lung function, and decreased risk of chronic obstructive pulmonary disease Environment International Particulate matter Air quality improvement Lung function Chronic obstructive pulmonary disease Cohort |
| title | Reduced ambient PM2.5, better lung function, and decreased risk of chronic obstructive pulmonary disease |
| title_full | Reduced ambient PM2.5, better lung function, and decreased risk of chronic obstructive pulmonary disease |
| title_fullStr | Reduced ambient PM2.5, better lung function, and decreased risk of chronic obstructive pulmonary disease |
| title_full_unstemmed | Reduced ambient PM2.5, better lung function, and decreased risk of chronic obstructive pulmonary disease |
| title_short | Reduced ambient PM2.5, better lung function, and decreased risk of chronic obstructive pulmonary disease |
| title_sort | reduced ambient pm2 5 better lung function and decreased risk of chronic obstructive pulmonary disease |
| topic | Particulate matter Air quality improvement Lung function Chronic obstructive pulmonary disease Cohort |
| url | http://www.sciencedirect.com/science/article/pii/S0160412021003317 |
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