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Bronchoalveolar cellularity and interleukin-8 levels in measles bronchiolitis obliterans.

Authors
Koh, YY; Jung, da E; Koh, JY; Kim, JY; Yoo, Y; Kim, CK
Citation
Chest, 131(5):1454-1460, 2007
Journal Title
Chest
ISSN
0012-36921931-3543
Abstract
BACKGROUND: Measles virus infection may progress to a chronic obstructive process including bronchiolitis obliterans (BO). This study investigates pulmonary cellular profiles and interleukin (IL)-8 levels in patients with BO following the measles. METHODS: BAL fluid was obtained from 12 children with BO who had a history of measles pneumonia during an outbreak in 2000 and 2001. BAL cell counts and differentials were compared to control patients as well as BAL IL-8 levels, which were measured by enzyme-linked immunosorbent assay. Immunohistochemical staining of BAL cells and three open-lung biopsy specimens were also analyzed for T-cell surface markers CD3, CD4, and CD8. RESULTS: BAL cellular profiles were characterized by a significantly increased percentage of neutrophils in the measles BO group (median, 16.0%) compared to the control group (2.3%) [p < 0.01]. BAL IL-8 levels were also markedly increased in the measles BO group (mean +/- SD, 418.6 +/- 286.0 pg/mL) compared to the control group (92.8 +/- 126.7 pg/mL) [p < 0.01]. BAL IL-8 levels correlated significantly with neutrophil percentages in both the measles BO group (r = 0.86, p = 0.000) and the control group (r = 0.79, p = 0.007). The lymphocyte subsets were characterized by a significantly increased number of CD8+ cells, resulting in a decreased CD4/CD8 ratio in the BAL and the biopsy specimens. CONCLUSION: These results suggest that pulmonary neutrophils and IL-8, along with CD8+ T lymphocytes may play an important role in the pathogenesis of BO after measles virus infection.
MeSH terms
Antigens, CD3/metabolismAntigens, CD8/metabolismBiopsyBronchiolitis Obliterans/etiology*Bronchiolitis Obliterans/pathology*Bronchoalveolar Lavage Fluid/chemistry*Bronchoalveolar Lavage Fluid/cytology*BronchoscopyCase-Control StudiesCell CountChild, PreschoolFemaleHumansInfantInterleukin-8/analysis*Lung/immunologyLung/pathologyLung/radiographyMaleMeasles/complications*Measles/pathology*Neutrophils/pathologyT-Lymphocytes/immunologyT-Lymphocytes/pathologyTomography, X-Ray Computed
DOI
10.1378/chest.06-0188
PMID
17494793
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Pediatrics & Adolescent Medicine
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