Bio Metrology of Nonfibrous Mineral Particles in Bronchoalveolar Lavage Fluids (REACTIT)
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|ClinicalTrials.gov Identifier: NCT03917485|
Recruitment Status : Recruiting
First Posted : April 17, 2019
Last Update Posted : April 17, 2019
The main purpose of this study is to update the pulmonary retention values of non-fibrous mineral particles in the general population.
This study will provide reference values for the interpretation and diagnosis of the cause of certain respiratory diseases potentially related to mineral particles.
|Condition or disease|
Some non-fibrous mineral particles are responsible for respiratory or systemic diseases, most often of occupational origin. Their use concerns multiple professional sectors.
The bio metrology of these particles, namely their quantification in a biological medium requires reference values. These are essential for clinicians to interpret pulmonary retention in patients who may have been exposed professionally or environmentally to non-fibrous mineral particles.
A comparative study conducted in 2015 by lafp showed an increase in the particulate load of nonfibrous mineral particles, including titanium, in lung parenchyma samples over time.
Bronchoalveolar lavage fluid is typically considered to be representative of the lung for the analysis of nonfibrous mineral particles. The thresholds currently used for the bio metrology of nonfibrous mineral particles in bronchoalveolar lavage fluid samples are based on reference values established more than 20 years ago. It is therefore appropriate to update these reference values by establishing a new control population from the analysis of bronchoalveolar lavage fluid from subjects not exposed to the non-fibrous mineral particles in a professional or environmental manner.
|Study Type :||Observational|
|Estimated Enrollment :||100 participants|
|Official Title:||Bio Metrology of Nonfibrous Mineral Particles in Bronchoalveolar Lavage Fluids|
|Actual Study Start Date :||December 5, 2018|
|Estimated Primary Completion Date :||December 2019|
|Estimated Study Completion Date :||April 2020|
- Number of non fibrous mineral particles in LBA (Bronchoalveolar lavage) (nombre of particles by ml) [ Time Frame: 1 month ]Quantitative analysis of Non Fibrous Mineral Particles on samples obtained from subjects selected free from any significant occupational or environmental exposure to Non-fibrous Mineral Particle.
- Name of non fibrous mineral particles in LBA (Bronchoalveolar lavage) (nombre of particules by ml) [ Time Frame: 1 month ]Identification of particles
- seize of non fibrous mineral particles in LBA (Bronchoalveolar lavage) [ Time Frame: 1 month ]seize of particles
Biospecimen Retention: Samples Without DNA
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 ClinicalTrials.gov identifier (NCT number): NCT03917485
|Contact: Jean-Claude Paironfirstname.lastname@example.org|
|Centre Hospitalier Intercommunal de Créteil||Recruiting|
|Créteil, France, 94010|
|Contact: Jean-Claude Pairon, Pr 157022093 ext 0033 JC.Pairon@chicreteil.fr|