An observational study in Chronic Obstructive Pulmonary Disease, sponsored by Centre Hospitalier Intercommunal Creteil. Recruiting at 1 site in France. Open to participants aged 18 Years to 70 Years. Per ClinicalTrials.gov, last updated 2026-06-16.
Sponsored by Centre Hospitalier Intercommunal Creteil · Observational
COPD and non-COPD patients will be included in the study after collection of their non-objection. The exhalation will be collected to study the microbiological diversity of human exhalations.
a second collection for the year +1 will be made, at the same time (between October and March).
The subjects will be recruited during a medical visit in the Departments of Pneumology and Occupational and Environmental Pathologies.
After information and inclusion of the subject in the study, a collection of clinical data, the state of health and the smoking status of the subject will be carried out by the clinical study technician.
A collection of the exhalation will also be carried out by the clinical study technician.
Several groups of subjects will be formed according to pathologies (COPD versus non-COPD), age and smoking status
4,131 studies on the registry are indexed under Pulmonary Disease, Chronic Obstructive; 697 are open to participants now.
This study's planned enrollment of 240 is above the median of 180 across 1,066 observational studies indexed under Pulmonary Disease, Chronic Obstructive.
Browse Pulmonary Disease, Chronic Obstructive studies →Centre Hospitalier Intercommunal Creteil is the lead sponsor of 131 studies on the registry; 36 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Subjects with chronic obstructive pulmonary disease (COPD) and no-COPD control subjects
For COPD:
For non-COPD
Exclusion Criteria:
Patients with chronic obstructive pulmonary disease will be recruited from the pulmonology or occupational pathology department. They are either active smokers or ex-smokers. They are over 18 years old
Other: collection of human exhalation
The no-COPD are controls followed in chi créteil for another pathology. They are between 18 and 30 years old and 45 and 70 years old. They are either: * Ex-smoker * Active smoker * Non-smoker
Other: collection of human exhalation
the collection of the exhalation will be carried out with a non-invasive device manufactured by a Chinese company. The collection of exhalation consists of the subject inhaling through the nose and exhaling gently through the mouth through a plastic straw for a time set at 5 min in the device
Number and dominant bacterial species in human exhalations of COPD subjects and non-COPD subjects
number and bacterial species
Time frame: Baseline
Number and dominant bacterial species in human exhalations according to smoking status
number and bacterial species
Time frame: Baseline
Number and dominant bacterial species in human exhalations according to age
number and bacterial species
Time frame: Baseline
Number and dominant bacterial species in human exhalations for patients returning for consultation 1 year apart during the winter season
number and bacterial species
Time frame: 1 year
Plan to share: No
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Pulmonary Disease, Chronic Obstructive→
Centre Hospitalier Intercommunal Creteil