Mechanism of PM-induced human bronchial epithelial cell toxicity in central China.

Exposure to PM has been linked to respiratory disorders, yet knowledge of the molecular mechanism is limited. Here, PM was monitored and collected in central China, and its cytotoxicity mechanism on human bronchial epithelial cells (BEAS-2B) was investigated. With the average concentration of 109 ± 69 μg/m, PM was rich in heavy metals and organic pollutants.