期刊
JOURNAL OF BIOCHEMICAL AND MOLECULAR TOXICOLOGY
卷 27, 期 1, 页码 87-97出版社
WILEY
DOI: 10.1002/jbt.21471
关键词
Particulate Matter (PM); Chemical Composition; Spatial Variation; Cytokines; Soil
资金
- Fogarty International Research Collaboration Award (FIRCA)
- National Institute for Environmental Health Sciences (NIEHS) [R01 ES016932, R01 ES017022-01]
- Instituto Nacional de Ecologia (INE-Mexico)
Spatial variation in particulate matterrelated health and toxicological outcomes is partly due to its composition. We studied spatial variability in particle composition and induced cellular responses in Mexico City to complement an ongoing epidemiologic study. We measured elements, endotoxins, and polycyclic aromatic hydrocarbons in two particle size fractions collected in five sites. We compared the in vitro proinflammatory response of J774A.1 and THP-1 cells after exposure to particles, measuring subsequent TNFa and IL-6 secretion. Particle composition varied by site and size. Particle constituents were subjected to principal component analysis, identifying three components: C1 (Si, Sr, Mg, Ca, Al, Fe, Mn, endotoxin), C2 (polycyclic aromatic hydrocarbons), and C3 (Zn, S, Sb, Ni, Cu, Pb). Induced TNFa levels were higher and more heterogeneous than IL-6 levels. Cytokines produced by both cell lines only correlated with C1, suggesting that constituents associated with soil induced the inflammatory response and explain observed spatial differences. (C) 2013 Wiley Periodicals, Inc. J BiochemMol Toxicol 27:87-97, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/jbt.21471
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