The impact of polar fraction of the fine particulate matter on redox responses in different rat tissues.

Particulate matter (PM) contains different chemical substances that have been associated with health effects and an increased risk of mortality due to their toxicity. In this study, fine particulate matter (PM) samples were collected in a region with rural characteristics (Seropédica (Se)) and another with some industries (Duque de Caxias (DC)) (Brazil, RJ). Rats were exposed to PM extracts daily for 25 days at different dilutions: 10×, 5×, and a concentrated solution (CS).