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Asthma, Inflammation and G Protein-coupled Receptors (GPCR)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00793676
Recruitment Status : Completed
First Posted : November 19, 2008
Last Update Posted : September 11, 2017
National Research Agency, France
Information provided by (Responsible Party):
University Hospital, Strasbourg, France

Brief Summary:
The G protein-coupled receptors (GPCRs) are a family of proteins expressed at the cell membrane. They are composed of 380 members involved in the important functions of the organism and are privileged therapeutic targets.Their expression is highly modulated depending on the metabolic state of the cells, in particular in pathological situations.our study proposes to determine whether GPCR expression modulation could be used as a biomarker, either prognostic or diagnostic, of treatments.To do so , the investigators will determine the expression profile of the 380 human GPCRs in human blood cell samples in two chronic inflammatory pulmonary diseases : asthma and COPD (chronic obstructive pulmonary disease ) . These have opposed inflammatory infiltrates : asthma is associated with eosinophil and Th2 lymphocyte infiltration whereas COPD shows neutrophils and macrophages within the airways with a Th1 lymphocytic population. The GPCR signature (transcriptomic) will be determined on total white blood cells as well as on isolated mono- and poly-nuclear populations obtained from healthy subjects and patients selected at the asthma or COPD consultation. The expression profiling analysis will reveal sub-groups of GPCRs whose expression is modified in disease. The specificity of the variation of expression of these biomarker sub-populations will be determined, by a study recruiting a hundred patients and controls per disease on this restraint number of genes. The outcomes of the project will lead to establish GPCR "identity cards" for these chronic inflammatory diseases, which might therefore be used as diagnostic or prognostic biomarkers to follow the evolution of a disease or the efficacy of a given treatment. In addition, detailed analysis of the identified GPCRs will lead to propose new therapeutic targets for inflammatory diseases. This study has therefore the objective of validating GPCRs as potential biomarkers for inflammatory diseases.

Condition or disease Intervention/treatment Phase
Asthma COPD Other: spirometry Other: blood test Not Applicable

Detailed Description:
Multicentre non-randomized

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 205 participants
Allocation: Non-Randomized
Intervention Model: Factorial Assignment
Masking: None (Open Label)
Primary Purpose: Diagnostic
Official Title: G Protein Coupled Receptor (GPCR)Signature as Biomarker of Chronic Pulmonary Inflammatory Diseases and of Therapeutic Follow-up
Study Start Date : September 2008
Actual Primary Completion Date : September 2017
Actual Study Completion Date : September 2017

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Asthma

Arm Intervention/treatment
A= Asthma Other: spirometry
Other: blood test
B= COPD Other: blood test
C= Control Other: blood test

Primary Outcome Measures :
  1. differential expression of GPCRs [ Time Frame: 1 day ]

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 85 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Asthma group
  • COPD group
  • Control group

Exclusion Criteria:

  • Patients with infection or inflammatory diseases

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00793676

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Colmar, France, 68024
Pascal Chanez
Marseille, France, 13008
University Hospital
Montpellier, France, 34295
Antoine Magnan
Nantes, France, 44035
University Hospital, Strasbourg, France
Strasbourg, France, 67000
Sponsors and Collaborators
University Hospital, Strasbourg, France
National Research Agency, France
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Principal Investigator: Romain Kessler, MD University Hospital, Strasbourg, France

Publications automatically indexed to this study by Identifier (NCT Number):
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Responsible Party: University Hospital, Strasbourg, France Identifier: NCT00793676    
Other Study ID Numbers: 4171
First Posted: November 19, 2008    Key Record Dates
Last Update Posted: September 11, 2017
Last Verified: September 2017
Keywords provided by University Hospital, Strasbourg, France:
GPCR expression
white blood cells
Additional relevant MeSH terms:
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Bronchial Diseases
Respiratory Tract Diseases
Lung Diseases, Obstructive
Lung Diseases
Respiratory Hypersensitivity
Hypersensitivity, Immediate
Immune System Diseases