Antioxidant concentrations in bronchial wash(BW) and bronchoalveolar lavage (BAL) 18 h after a 2-h exposure to air and diesel exhaust (DE)
| Antioxidants μM | Air | DE | p-value |
| BW vitamin C | 0.59 (0.44–0.75) | 0.65 (0.58–0.85) | 0.57 |
| BAL vitamin C | 0.51 (0.37–0.70) | 0.62 (0.44–0.74) | 0.23 |
| BW urate | 0.55 (0.39–1.06) | 0.75 (0.51–0.93) | 0.56 |
| BAL urate | 0.78 (0.64–0.85) | 1.07 (0.87–1.36) | 0.03 |
| BW GSH | 0.16 (0.05–0.35) | 0.24 (0.10–0.47) | 0.52 |
| BAL GSH | 0.33 (0.20–0.45) | 0.46 (0.24–0.74) | 0.04 |
Data are presented as median (interquartile range). GSH: reduced glutathione. n = 15.