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© 2016. This work is licensed under https://creativecommons.org/licenses/by-nc/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

Abstract

Although traffic exposure has been associated with the development of COPD, the role of particulate matter <10 µm in aerodynamic diameter (PM10) in the pathogenesis of COPD is not yet fully understood. We assessed the 1-year effect of exposure to PM10 on the pathogenesis of COPD in a retrospective cohort study. We recruited 53 subjects with COPD stages III and IV and 15 healthy controls in a hospital in Taiwan. We estimated the 1-year annual mean levels of PM10 at all residential addresses of the cohort participants. Changes in PM10 for the 1-year averages in quintiles were related to diffusion capacity of the lung for carbon monoxide levels (r=−0.914, P=0.029), changes in the pulse oxygen saturation (ΔSaO2; r=−0.973, P=0.005), receptor for advanced glycation end-products (r=−0.881, P=0.048), interleukin-6 (r=0.986,P=0.002), ubiquitin (r=0.940,P=0.017), and beclin 1 (r=0.923, P=0.025) in COPD. Next, we observed that ubiquitin was correlated with ΔSaO2 (r=−0.374, P=0.019). Beclin 1 was associated with diffusion capacity of the lung for carbon monoxide (r=−0.362, P=0.028), ΔSaO2 (r=−0.354, P=0.032), and receptor for advanced glycation end-products (r=−0.471, P=0.004). Autophagy may be an important regulator of the PM10-related pathogenesis of COPD, which could cause deterioration in the lung diffusion capacity and oxygen saturation.

Details

Title
Associations of autophagy with lung diffusion capacity and oxygen saturation in severe COPD: effects of particulate air pollution
Author
Lee, K; Chiang, L; Ho S; Liu, W  VIAFID ORCID Logo  ; Chen, T; Feng, P; Su C; Chuang, K; Chang, C; Chuang, H
Pages
1569-1578
Section
Original Research
Publication year
2016
Publication date
2016
Publisher
Dove Medical Press Ltd.
ISSN
11769106
e-ISSN
11782005
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2680094074
Copyright
© 2016. This work is licensed under https://creativecommons.org/licenses/by-nc/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.