The effect of repeated ozone exposures on inflammatory markers in bronchoalveolar lavage fluid and mucosal biopsies
Jorres, RA; Holz, O; Zachgo, W; Timm, P; Koschyk, S; Muller, B; Grimminger, F; Seeger, W; Kelly, FJ; Dunster, C; Frischer, T; Lubec, G; Waschewski, M; Niendorf, A; Magnussen, H
HERO ID
5654
Reference Type
Journal Article
Year
2000
Language
English
PMID
| HERO ID | 5654 |
|---|---|
| In Press | No |
| Year | 2000 |
| Title | The effect of repeated ozone exposures on inflammatory markers in bronchoalveolar lavage fluid and mucosal biopsies |
| Authors | Jorres, RA; Holz, O; Zachgo, W; Timm, P; Koschyk, S; Muller, B; Grimminger, F; Seeger, W; Kelly, FJ; Dunster, C; Frischer, T; Lubec, G; Waschewski, M; Niendorf, A; Magnussen, H |
| Journal | American Journal of Respiratory and Critical Care Medicine |
| Volume | 161 |
| Issue | 6 |
| Page Numbers | 1855-1861 |
| Abstract | Porjekt Umwelt und Gesundheit of the State of Baden-Wurtemberg, Karlsruhe, Germany. #The aim of this study was to investigate the cellular and biochemical events associated with repeated exposures to ozone. Twenty-three healthy subjects underwent single exposures to 200 ppb ozone and to filtered air (FA), as well as repeated exposures to 200 ppb ozone on 4 consecutive days, each for 4 h of intermittent exercise. Bronchoalveolar lavage was performed and mucosal biopsies were taken 20 h after the single or the last of the repeated exposures. As compared with FA, the single exposure to ozone caused a decrease in FEV1 , an increase in the percentages of neu-trophils and lymphocytes, the concentrations of total protein, IL-6, IL-8, reduced glutathione, urate, and ortho-tyrosine in BAL fluid (BALF), but no changes in the cellular composition of biopsy. After the repeated exposure, the effect on lung function was abolished and differential cell counts in BALF were not significantly different from those after FA. However, the concentrations of total protein, IL-6, IL-8, reduced glutathione, and ortho-tyrosine were still increased. IL-10 could only be detected in BALF after repeated ozone exposures. Furthermore, macroscopic scores for bronchitis, erythema, and hypervulnerability of airway mucosa were in-creased, as well as numbers of neutrophils in bronchial mucosal biopsies. Our data demonstrate that airway inflammation persists after repeated ozone exposure, despite attenuation of some in-flammatory markers in BALF and adaptation of lung function. |
| Doi | 10.1164/ajrccm.161.6.9908102 |
| Pmid | 10852757 |
| Wosid | WOS:000087675500020 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | ECRIB. Umlauts over o in Jorres and u in Muller.Am. J. Respir. Crit. Care Med. 161: 1855-1861. |
| Is Public | Yes |
| Language Text | English |
| Keyword | AIRWAY INFLAMMATION; NITROGEN-DIOXIDE; HUMANS; LUNG; RESPONSES; ALLERGEN; RESPONSIVENESS; ADAPTATION; POLLUTION; FIBROSIS |
| Is Qa | No |