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Induction of Neutrophilic Traps ( NETs ) by the Environment and Infectious Inflammatory Lung Cystic Fibrosis (MucoNETs)

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: NCT02564393
Recruitment Status : Completed
First Posted : September 30, 2015
Last Update Posted : September 30, 2015
Information provided by (Responsible Party):
University Hospital, Tours

Brief Summary:

The study is defined in 3 stages of in vitro assays :

Phase 1 : Secretion of NETs in response to lung disease and their secretion of factors.

This is a transversal study in which we compare :

  • Producing NETs (DNA and proteases ) by neutrophils purified from sputum and blood of patients
  • Producing NETs (DNA and proteases ) by purified neutrophils in the blood of patients and blood of control subjects

Phase 2: Mechanisms of activation of NETs secretory pathways . This phase will identify receptors (TLR ) involved in the secretion of NETs and analyze the involvement of dependent transduction pathways calcium and PKC . It will be performed on control blood neutrophils.

Phase 3: Analysis of cell death ( NETose )

This is a transversal study that will analyze :

the mode of cell death of neutrophils purified blood and sputum of patients and control blood neutrophils by flow cytometry and transmission electron microscopy .

Condition or disease
Cystic Fibrosis

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Study Type : Observational
Actual Enrollment : 55 participants
Observational Model: Case Control
Time Perspective: Prospective
Official Title: Secretion Induction of Neutrophil Extracellular Traps (NETs)in Inflammatory and Infectious Environment of Mucoviscidose
Study Start Date : May 2011
Actual Primary Completion Date : May 2013

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Cystic Fibrosis

Adult with cystic fibrosis

Primary Outcome Measures :
  1. the DNA concentration secreted into the extracellular environment neutrophil activated [ Time Frame: 1 hour ]

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Pathophysiological study comparing a " Cystic fibrosis " group to a control group (adults)

Inclusion Criteria:

Patients :

  • Men or women over 18
  • Patients with mucoviscidose in stable condition, i.e. not having presented an acute push of bronchopulmonary attack requiring a antibiothérapie or a hospitalization for treatment of its disease during the 2 previous weeks
  • Signed consent

Volunteers :

  • Men or women over 18
  • Without respiratory antecedent nor known respiratory pathology
  • Signed consent

Exclusion Criteria:

Patients :

  • In exclusion period of an other study

Volunteers :

  • In exclusion period of an other study
  • Antibiotic treatment and/or anti-inflammatory drug (AINS or corticoids) in the 2 weeks before inclusion in the study

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): NCT02564393

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CHRU de Tours
Tours, France
Sponsors and Collaborators
University Hospital, Tours

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Responsible Party: University Hospital, Tours Identifier: NCT02564393    
Other Study ID Numbers: PHAO09-PD / MucoNETs
First Posted: September 30, 2015    Key Record Dates
Last Update Posted: September 30, 2015
Last Verified: September 2015
Additional relevant MeSH terms:
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Cystic Fibrosis
Pathologic Processes
Pancreatic Diseases
Digestive System Diseases
Lung Diseases
Respiratory Tract Diseases
Genetic Diseases, Inborn
Infant, Newborn, Diseases