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

September 29, 2015 updated by: University Hospital, Tours

Secretion Induction of Neutrophil Extracellular Traps (NETs)in Inflammatory and Infectious Environment of Mucoviscidose

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 .

Study Overview

Status

Completed

Conditions

Study Type

Observational

Enrollment (Actual)

55

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • France
      • Tours, France
        • CHRU de Tours

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Pathophysiological study comparing a " Cystic fibrosis " group to a control group (adults)

Description

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

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Case-Control
  • Time Perspectives: Prospective

Cohorts and Interventions

Group / Cohort
T
Control
A
Adult with cystic fibrosis

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
the DNA concentration secreted into the extracellular environment neutrophil activated
Time Frame: 1 hour
1 hour

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University Hospital, Tours

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

May 1, 2011

Primary Completion (Actual)

May 1, 2013

Study Registration Dates

First Submitted

September 29, 2015

First Submitted That Met QC Criteria

September 29, 2015

First Posted (Estimate)

September 30, 2015

Study Record Updates

Last Update Posted (Estimate)

September 30, 2015

Last Update Submitted That Met QC Criteria

September 29, 2015

Last Verified

September 1, 2015

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • PHAO09-PD / MucoNETs

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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