Blood hypomethylation of inflammatory genes mediates the effects of metal-rich airborne pollutants on blood coagulation

Letizia Tarantini, Matteo Bonzini, Armando Tripodi, Laura Angelici, Francesco Nordio, Laura Cantone, Pietro Apostoli, Pier Alberto Bertazzi, Andrea A. Baccarelli

Research output: Contribution to journalArticle

Abstract

Objectives Recent investigations have associated airborne particulate matter (PM) with increased coagulation and thrombosis, but underlying biological mechanisms are still incompletely characterised. DNA methylation is an environmentally sensitive mechanism of gene regulation that could potentially contribute to PM-induced hypercoagulability. We aimed to test whether altered methylation mediates environmental effects on coagulation. Methods We investigated 63 steel workers exposed to a wide range of PM levels, as a work-related condition with well-characterised prothrombotic exposure. We measured personal PM10 (PM≤10 mm in aerodynamic diameter), PM 1 (≤1 mm) and air metal components. We determined leukocyte DNA methylation of NOS3 (nitricoxide- synthase-3) and EDN1 (endothelin-1) through bisulfite-pyrosequencing and we measured ETP as a global coagulation-activation test after standardised triggers. Results ETP increased in association with PM10 (β=20.0, 95% CI 3.0 to 37.0), PM1 (β=80.8 95% CI 14.9 to 146.7) and zinc (β=51.3, 95% CI 0.01 to 111.1) exposures. NOS3 methylation was negatively associated with PM10 (β=-0.2, 95% CI -0.4 to -0.03), PM1 (β=-0.8, 95% CI -1.4 to -0.1), zinc (β=-0.9, 95% CI -1.4 to -0.3) and iron (β=-0.7, 95% CI -1.4 to -0.01) exposures. Zinc exposure was negatively associated with EDN1 (β=-0.3, 95% CI -0.8 to -0.1) methylation. Lower NOS3 (β=-42.3; p

Original languageEnglish
Pages (from-to)418-425
Number of pages8
JournalOccupational and Environmental Medicine
Volume70
Issue number6
DOIs
Publication statusPublished - Jun 2013

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health

Fingerprint Dive into the research topics of 'Blood hypomethylation of inflammatory genes mediates the effects of metal-rich airborne pollutants on blood coagulation'. Together they form a unique fingerprint.

  • Cite this