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Open Access Green as soon as Postprint is submitted to ZB.
Low-level exposure to ambient particulate matter is associated with systemic inflammation in ischemic heart disease patients.
Environ. Res. 116, 44-51 (2012)
Short-term exposure to ambient air pollution is associated with increased cardiovascular mortality and morbidity. This adverse health effect is suggested to be mediated by inflammatory processes. The purpose of this study was to determine if low levels of particulate matter, typical for smaller cities, are associated with acute systemic inflammation. Fifty-two elderly individuals with ischemic heart disease were followed for six months with biweekly clinical visits in the city of Kotka, Finland. Blood samples were collected for the determination of inflammatory markers interleukin (IL)-1β, IL-6, IL-8, IL-12, interferon (IFN)γ, C-reactive protein (CRP), fibrinogen, myeloperoxidase and white blood cell count. Particle number concentration and fine particle (particles with aerodynamic diameters <2.5μm (PM(2.5))) as well as thoracic particle (particles with aerodynamic diameters <10μm (PM(10))) mass concentration were measured daily at a fixed outdoor measurement site. Light-absorbance of PM(2.5) filter samples, an indicator of combustion derived particles, was measured with a smoke-stain reflectometer. In addition, personal exposure to PM(2.5) was measured with portable photometers. During the study period, wildfires in Eastern Europe led to a 12-day air pollution episode, which was excluded from the main analyses. Average ambient PM(2.5) concentration was 8.7μg/m(3). Of the studied pollutants, PM(2.5) and absorbance were most strongly associated with increased levels of inflammatory markers; most notably with C-reactive protein and IL-12 within a few days of exposure. There was also some evidence of an effect of particulate air pollution on fibrinogen and myeloperoxidase. The concentration of IL-12 was considerably (227%) higher during than before the forest fire episode. These findings show that even low levels of particulate air pollution from urban sources are associated with acute systemic inflammation. Also particles from wildfires may exhibit pro-inflammatory effects.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Air Pollution; Inflammation; Ischemic Heart Disease; Personal Exposure; Wildfires; CORONARY-ARTERY-DISEASE; MYOCARDIAL-INFARCTION SURVIVORS; AIR-POLLUTION; ULTRAFINE PARTICLES; RATE-VARIABILITY; BLOOD MARKERS; IN-VITRO; FINE; HEALTH; RISK
ISSN (print) / ISBN
0013-9351
e-ISSN
1096-0953
Journal
Environmental Research
Quellenangaben
Volume: 116,
Pages: 44-51
Publisher
Elsevier
Publishing Place
San Diego, Calif.
Non-patent literature
Publications
Reviewing status
Peer reviewed
Institute(s)
Institute of Epidemiology II (EPI2)