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EFFECT OF SMOKING ON MUCUS HYPERSECRETION MECHANISMS IN ASTHMA AND CHRONIC OBSTRUCTIVE PULMONARY DISEASE

NCT01947218 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 55

Last updated 2023-08-14

No results posted yet for this study

Summary

Asthma and COPD are characterized by an accelerated decline in lung function associated with incompletely reversible airflow obstruction. This could be the result of lung structural changes and inflammation. Tissue repairing mechanisms may result in a restitution ad integrum of bronchial epithelium. But in most cases, especially in COPD and severe asthma, the "remodeling" is characterized by mucus cells hyperplasia, overproduction of mucus, and physicochemical, biological and immunological changes. Clinically, this mucus overproduction is reported by patients as the clinical symptom called "chronic bronchitis". Generally, it develops at a bronchiolar level where it is responsible for the progression of these diseases. There is a paradox, because the intrinsic properties of mucus seem rather beneficial so fighting against it may not be really wise at long-term. Especially its defensive effect against microbial agents which remains poorly explained. Currently, no treatment aims to reduce the production of mucus and mechanisms leading to such an overproduction are poorly understood in severe asthma and COPD. The identification of new targets to treat this overproduction of mucus in COPD is therefore of major interest.

In view of current knowledge, inflammatory mediators and signal transduction leading to increased mucin production and increased number of goblet cells are probably IL-9, IL-13, IL -1ß and TNF-α involving calcium-sensitive chloride channels. Intracellular signaling pathways seem to be based on STAT-6, FOXA2, SPDEF, EGFR and / or COX-2

Conditions

  • CHRONIC OBSTRUCTIVE PULMONARY DISEASE (COPD)

Interventions

PROCEDURE

bronchial biopsies

OTHER

Determination of CO in exhaled air

Sponsors & Collaborators

  • Assistance Publique Hopitaux De Marseille

    lead OTHER

Principal Investigators

  • LOIC MONDOLONI · Assistance Publique Hopitaux De Marseille

Study Design

Allocation
NON_RANDOMIZED
Purpose
OTHER
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
80 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2014-06-30
Primary Completion
2018-12-19
Completion
2023-08-07

Countries

  • France

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01947218 on ClinicalTrials.gov