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Healthy Non-smokers clinical trials

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NCT ID: NCT00180622 Withdrawn - COPD Patients Clinical Trials

Markers for Chronic Obstructive Pulmonary Disease (COPD)

Start date: July 1, 2001
Phase:
Study type: Observational

The primary aim of this study is to exploit a difference between COPD patients, chronic smokers without COPD and healthy non-smoking subjects. This will help to assess the utility of inflammatory and oxidative markers in exhaled air and sputum and to compare them with the lung function, clinical parameters and computerised tomography (CT).

NCT ID: NCT00159302 Withdrawn - Healthy Smokers Clinical Trials

Biomarkers of iNOS Activity in COPD, Asthma, Healthy Control

Start date: September 2003
Phase:
Study type: Observational

This pilot study will measure the baseline levels and the intra- and inter-subject variability of exhaled (alveolar and bronchial) and nasal NO in smoking subjects with mild and moderate COPD on or off steroid treatment, smoking healthy volunteers and non-smoking mild asthmatics off steroids, using multiple exhalation flow rates. I