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Long-Term Exposure to Particulate Air Pollution, Black Carbon, and Their Source Components in Relation to Ischemic Heart Disease and Stroke.

Artikel i vetenskaplig tidskrift
Författare Petter L S Ljungman
Niklas Andersson
Leo Stockfelt
Eva M. Andersson
Johan Nilsson Sommar
Kristina Eneroth
Lars Gidhagen
Christer Johansson
Anton Lager
Karin Leander
Peter Molnár
Nancy L Pedersen
Debora Rizzuto
Annika Rosengren
David Segersson
Patrik Wennberg
Lars Barregård
Bertil Forsberg
Gerd Sällsten
Tom Bellander
Göran Pershagen
Publicerad i Environmental health perspectives
Volym 127
Nummer/häfte 10
ISSN 1552-9924
Publiceringsår 2019
Publicerad vid Institutionen för medicin, avdelningen för samhällsmedicin och folkhälsa, enheten för arbets-och miljömedicin
Institutionen för medicin, avdelningen för molekylär och klinisk medicin
Språk en
Länkar dx.doi.org/10.1289/EHP4757
www.ncbi.nlm.nih.gov/entrez/query.f...
Ämneskategorier Miljömedicin

Sammanfattning

Long-term exposure to particulate matter (PM) in ambient air has been associated with cardiovascular mortality, but few studies have considered incident disease in relation to PM from different sources.We aimed to study associations between long-term exposure to different types of PM and sources, and incident ischemic heart disease (IHD) and stroke in three Swedish cities.Based on detailed emission databases, monitoring data, and high-resolution dispersion models, we calculated source contributions to PM with aerodynamic diameter ≤ 10 μ m ( PM 10 ), PM with aerodynamic diameter ≤ 2.5 μ m ( PM 2.5 ), and black carbon (BC) from road wear, traffic exhaust, residential heating, and other sources in Gothenburg, Stockholm, and Umeå. Registry data for participants from four cohorts were used to obtain incidence of IHD and stroke for first hospitalization or death. We constructed time windows of exposure for same-year, 1- to 5-y, and 6- to 10-y averages preceding incidence from annual averages at residential addresses. Risk estimates were based on random effects meta-analyses of cohort-specific Cox proportional hazard models.We observed 5,166 and 3,119 incident IHD and stroke cases, respectively, in 114,758 participants. Overall, few consistent associations were observed between the different air pollution measures and IHD or stroke incidence. However, same-year levels of ambient locally emitted BC (range: 0.01 - 4.6   μ g / m 3 ) were associated with a 4.0% higher risk of incident stroke per interquartile range (IQR), 0.30   μ g / m 3 [95% confidence interval (CI): 0.04, 7.8]. This association was primarily related to BC from traffic exhaust. PM 10 (range: 4.4 - 52   μ g / m 3 ) and PM 2.5 (range: 2.9 - 22   μ g / m 3 ) were not associated with stroke. Associations with incident IHD were observed only for PM 2.5 exposure from residential heating.Few consistent associations were observed between different particulate components and IHD or stroke. However, long-term residential exposure to locally emitted BC from traffic exhaust was associated with stroke incidence. The comparatively low exposure levels may have contributed to the paucity of associations. https://doi.org/10.1289/EHP4757.

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