Bronchiolitis Obliterans Clinical Trial
Official title:
Lung Function and Bronchial Inflammation in Patients With Bronchiolithis Obliterans
The investigators plan to study the variability of lung function parameters and bronchial inflammatory markers in 20 patients with bronchiolitis obliterans at the age of 6 to 25 years compared with an age- and sex-matched control group. The investigators will perform a pulmonary function test (body plethysmography with TLCO), and measure the fraction of exhaled nitric oxide (eNO). Further a blood sample is drawn to determine the systemic inflammation. Finally induced sputum is collected and a cell count is performed, and cells and supernatants are analyzed for inflammatory markers. This investigation will be repeated after 4-6 weeks. The aim of this study is to define baseline values and the variability of possible outcome parameters for future interventional studies.
The purpose of this study is to characterize the variability of lung function values and
bronchial inflammation of 20 Patients with Bronchiolitis obliterans aged between 6 up to 25
years. The patients' data will be compared with the results of a reference group with
similar age conditions to determine possible outcome-parameters for following interventional
studies.
The sputum samples will be processed and quantitatively analyzed to get a profile of the
cytological composition.
(Sputum and serum samples are analyzed by quantitative real-time polymerase chain reaction
(PCR) (qRT-PCR) and by cytometric bead assay (CBA).)
Methods and Work Programme:
This study consists of two study visits (V1 and V2)
V1:
- Measurement of nitric oxide in expired air (eNO)
- Lung function testing with spirometry and body plethysmography
- Bronchodilation
- Lung function testing with spirometry and body plethysmography
- Blood test: blood count, CRP, RAST, serum inflammatory mediators, (genetic markers of
the non-specific pulmonary defense system)
- Induced sputum for inflammatory mediators and microbiological investigations
V2:
- Measurement of nitric oxide in expired air (eNO)
- Lung function testing with spirometry and body plethysmography
- Bronchodilation
- Lung function testing with spirometry and body plethysmography
- Induced sputum for inflammatory mediators and microbiological investigations
;
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