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- Klinische proef NCT01692444
Role of Fibrocytes in the Bronchial Remodelling of Chronic Obstructive Pulmonary Disease (FIBROCHIR)
Airway remodelling is an abnormal tissue repair following bronchial inflammation, which contributes to none reversible pathological features, such as bronchial and peri-bronchial fibrosis. It also influences the prognosis of Chronic Obstructive Pulmonary Disease (COPD) and its mechanisms remain largely unknown. The role of fibrocytes has been demonstrated in the pathophysiology of asthma, lung fibrosis or pulmonary hypertension. However, the recruitment of blood fibrocytes and their involvement in COPD airway remodelling remain unknown.
The main objective of the study is to analyse the distribution and quantify the number of the peri-bronchial and blood circulating fibrocytes in patients with different stages of COPD compared to control subjects.
Studie Overzicht
Toestand
Conditie
Studietype
Inschrijving (Werkelijk)
Contacten en locaties
Studie Locaties
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Pessac, Frankrijk, 33604
- University hospital of Bordeaux, Hôpital du Haut Lévêque
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Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Bemonsteringsmethode
Studie Bevolking
Beschrijving
Inclusion Criteria:
- Male or female aged more than 40 yr
- Patient needed a thoracic surgery such as lobectomy for cancer or lung transplantation or lung reduction volume surgery.
- COPD group: diagnostic of COPD and differentiation of the stage from 1 to 4 according to the GOLD guidelines.
- Control group: subjects with normal lung function testing and no chronic symptoms (cough or expectoration). Subjects will be separated in 2 groups according to smoking history (Never smokers, smokers (former or current) and paired to patients according to age and sex.
- with a written informed consent
Exclusion Criteria:
- Subject without any social security or health insurance
- Asthma, lung fibrosis or idiopathic pulmonary hypertension
- Chronic viral infections (hepatitis, HIV)
- Pregnant woman or breastfeeding
- Subject included for cancer surgery with a Pn0 diagnosis not confirmed after the intervention.
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
Cohorten en interventies
Groep / Cohort |
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COPD
15 patients with COPD from 1 to 4 according to the GOLD 2011
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Non smoker Control
15 patients without COPD and no smoking history
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Smoker Control
15 patients without COPD but a smoking history
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Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Tijdsspanne |
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Increased number of peri-bronchial and blood circulating fibrocytes gradually in each stages of COPD and compared to control subjects.
Tijdsspanne: Lung tissues and blood samples will be collected at inclusion visit during surgery (Day 0)
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Lung tissues and blood samples will be collected at inclusion visit during surgery (Day 0)
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Secundaire uitkomstmaten
Uitkomstmaat |
Tijdsspanne |
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Characterization of fibrocytes: expression of chemokines receptors, Toll Like Receptors, HLA class II
Tijdsspanne: Lung tissues and blood samples will be collected at inclusion visit during surgery (Day 0)
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Lung tissues and blood samples will be collected at inclusion visit during surgery (Day 0)
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Correlation between lung attenuation and the number of fibrocytes
Tijdsspanne: Assessed one year after inclusion visit (i.e. surgery date =Day 0)
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Assessed one year after inclusion visit (i.e. surgery date =Day 0)
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Correlation between plethysmography and the number of fibrocytes.
Tijdsspanne: Assessed one year after inclusion visit (i.e. surgery date = Day 0)
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Assessed one year after inclusion visit (i.e. surgery date = Day 0)
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Medewerkers en onderzoekers
Sponsor
Onderzoekers
- Studie stoel: Nicholas MOORE, MD-PhD, University Hospital, Bordeaux
Publicaties en nuttige links
Studie record data
Bestudeer belangrijke data
Studie start (Werkelijk)
Primaire voltooiing (Werkelijk)
Studie voltooiing (Werkelijk)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Schatting)
Updates van studierecords
Laatste update geplaatst (Werkelijk)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
- CHUBX 2011/34
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