Human nasal mucosal changes after exposure to urban pollution

Abstract

Millions of people worldwide are living in areas where ozone (03) concentrations exceed hea standards (anihourl average of 235 pgmim30.12 ppm, not t" be eceede more than once per year). Ozone induces acute nasal inflammatory rponses and Significant epithelial lesions in experimental animals and humans. To determine the nasal effects of a 15-day exposure to an urban pollutdatimospher. with 03 as..the main pett, studied a of healthy, young males niewly arrived to soutiwest metropolitan Mexico City (SWMMC). The study included 49 non- smoking residents in an unpolluted port, Veracu City;. 14 subjec stayd in the port and served as controls, while 35 subjects