An observational study in Occupational Exposure, sponsored by Centre Hospitalier Intercommunal Creteil. Completed at 1 site in France. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2023-09-06.
Sponsored by Centre Hospitalier Intercommunal Creteil · Observational
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.
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.
Centre Hospitalier Intercommunal Creteil is the lead sponsor of 131 studies on the registry; 36 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Subjects not exposed to Non-fibrous Mineral Particle in a professional and / or environmental way
Exclusion Criteria:
Number of non fibrous mineral particles in LBA (Bronchoalveolar lavage) (nombre of particles by ml)
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.
Time frame: 1 month
Name of non fibrous mineral particles in LBA (Bronchoalveolar lavage) (nombre of particules by ml)
Identification of particles
Time frame: 1 month
seize of non fibrous mineral particles in LBA (Bronchoalveolar lavage)
seize of particles
Time frame: 1 month
Plan to share: No
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This study is completed, as verified in Sep 2023. You cannot join it, but the record below documents what was studied.
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Centre Hospitalier Intercommunal Creteil