Particulate Matter

This report presents a study led by Marie Pedersen of the University of Copenhagen, Denmark. Pedersen and colleagues examined children’s asthma in four Danish cohorts and focused on exposure to an array of air pollutants, including fine particulate matter, ozone, sulfur dioxide, nitrogen dioxide, and combinations of those pollutants.

This report presents a study that assessed associations between long-term exposure to outdoor ultrafine particles (UFPs) and black carbon with mortality using several modeling approaches. The investigators applied exposure models developed through mobile monitoring in Toronto and Montreal to 1.5 million Canadian adults residing in both cities.

This report presents the findings of a study led by Manabu Shiraiwa of the University of California, Irvine, a recipient of HEI’s Walter A. Rosenblith New Investigator Award. Shiraiwa and colleagues evaluated the mechanisms of aerosol-induced reactive oxygen species formation by two pathways in the respiratory tract: by chemical reactions  and by immune cells called macrophages.