Ultrafine particles from traffic alter gene expression in human olfactory cells, study finds

Exposure to ultrafine particles from traffic alters the expression of many genes in human olfactory mucosa cells, a new study shows. The study, led by the University of Eastern Finland, is the first to combine an analysis of emissions from different diesel fuels and exhaust after-treatment systems with an examination of their effects in a human-derived cell model of the olfactory mucosa. The findings were published in Science of The Total Environment.