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Residential black carbon exposure and circulating markers of systemic inflammation in elderly males: the Normative Aging Study.

Authors
Fang-SC; Mehta-AJ; Alexeeff-SE; Gryparis-A; Coull-B; Vokonas-P; Christiani-DC; Schwartz-J
Source
Environ Health Perspect 2012 May; 120(5):674-680
NIOSHTIC No.
20041369
Abstract
BACKGROUND: Traffic-related particles (TRPs) are associated with adverse cardiovascular events. The exact mechanisms are unclear, but systemic inflammatory responses likely play a role. OBJECTIVES: We conducted a repeated measures study among male participants of the Normative Aging Study in the greater Boston, Massachusetts, area to determine whether individual-level residential black carbon (BC), a marker of TRPs, is associated with systemic inflammation and whether coronary heart disease (CHD), diabetes, and obesity modify associations. METHODS: We quantified markers of inflammation in 1,163 serum samples from 580 men. Exposure to BC up to 4 weeks prior was predicted from a validated spatiotemporal land-use regression model. Linear mixed effects models estimated the effects of BC on each marker while adjusting for potential confounders. RESULTS: Associations between BC and blood markers were not observed in main effects models or when stratified by obesity status. However, BC was positively associated with markers of inflammation in men with CHD (particularly vascular endothelial growth factor) and in men with diabetes (particularly interleukin-1 and tumor necrosis factor-a). Significant exposure time windows varied by marker, although in general the strongest associations were observed with moving averages of 2-7 days after a lag of several days. CONCLUSIONS: In an elderly male population, estimated BC exposures were positively associated with markers of systemic inflammation but only in men with CHD or diabetes.
Keywords
Humans; Men; Particulates; Particulate-dust; Cardiovascular-function; Cardiovascular-system; Cardiovascular-system-disease; Cardiovascular-system-disorders; Cardiovascular-disease; Age-groups; Weight-factors; Weight-measurement; Physiological-factors; Physiological-function; Exposure-levels; Biomarkers; Blood-cells; Blood-analysis; Blood-samples; Blood-serum; Author Keywords: air pollution; black carbon; cardiovascular disease; coronary heart disease; diabetes; inflammation; land-use regression model; particulate matter; susceptible; traffic
Contact
S.C. Fang, 665 Huntington Ave., Building 1, Room 1411, Boston, MA 02115
CODEN
EVHPAZ
CAS No.
1333-86-4
Publication Date
20120501
Document Type
Journal Article
Email Address
sfang@hsph.harvard.edu
Funding Type
Grant
Fiscal Year
2012
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-T42-OH-008416; B09112012
Issue of Publication
5
ISSN
0091-6765
Source Name
Environmental Health Perspectives
State
MA
Performing Organization
Harvard School of Public Health
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