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Review
. 2009:4:233-43.
doi: 10.2147/copd.s5098. Epub 2009 Jun 11.

Particulate matter air pollution exposure: role in the development and exacerbation of chronic obstructive pulmonary disease

Sean H Ling  1 , Stephan F van Eeden
Affiliations
Review

Particulate matter air pollution exposure: role in the development and exacerbation of chronic obstructive pulmonary disease

Sean H Ling et al. Int J Chron Obstruct Pulmon Dis. 2009.

Abstract

Due to the rapid urbanization of the world population, a better understanding of the detrimental effects of exposure to urban air pollution on chronic lung disease is necessary. Strong epidemiological evidence suggests that exposure to particulate matter (PM) air pollution causes exacerbations of pre-existing lung conditions, such as, chronic obstructive pulmonary disease (COPD) resulting in increased morbidity and mortality. However, little is known whether a chronic, low-grade exposure to ambient PM can cause the development and progression of COPD. The deposition of PM in the respiratory tract depends predominantly on the size of the particles, with larger particles deposited in the upper and larger airways and smaller particles penetrating deep into the alveolar spaces. Ineffective clearance of this PM from the airways could cause particle retention in lung tissues, resulting in a chronic, low-grade inflammatory response that may be pathogenetically important in both the exacerbation, as well as, the progression of lung disease. This review focuses on the adverse effects of exposure to ambient PM air pollution on the exacerbation, progression, and development of COPD.

Keywords: air pollution; alveolar macrophage; chronic obstructive pulmonary disease; particulate matter.

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Figures

Figure 1
Figure 1
Association between FEV1 and long-term PM10 exposure (five-year mean). Data points are means of each place and year of study. Abbreviations: FEV1, forced expiratory volume in one second; PM, particulate matter.
Figure 2
Figure 2
Particulate matter (PM) found in a) the blood vessel walls, b) lymphoid tissue, c) alveolar macrophages, d) Parenchyma, e) and airway wall, Sections from human lung tissuestained with H&E.
Figure 3
Figure 3
Association between COPD and long-term PM10 exposure (five-year mean). Data points are means of each place and year of study. Abbreviations: COPD, chronic obstructive pulmonary disease; PM, particulate matter.
See this image and copyright information in PMC

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