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Whole-Body Nanoparticle Aerosol Inhalation Exposures
Published on: May 7, 2013
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Transcriptomics insight into occupational exposure to engineered nanoparticles
Zuzana Simova1,2, Michal Sima1, Daniela Pelclova3
1Department of Toxicology and Molecular Epidemiology, Institute of Experimental Medicine CAS, Prague, Czech Republic.
Nanomedicine (London, England)
|July 3, 2025
Summary
Daily nanoparticle (NP) inhalation altered gene expression in male workers, affecting stress response and potentially increasing cancer risk. Further research and protective gear are recommended for those with long-term NP exposure.
Area of Science:
- Occupational Health
- Toxicogenomics
- Environmental Health
Background:
- Nanoparticle (NP) exposure in occupational settings poses potential health risks.
- Long-term exposure effects on the transcriptomic profile are not fully understood.
- Research workers in nanocomposite fields experience chronic NP exposure.
Purpose of the Study:
- To investigate the impact of acute daily nanoparticle inhalation on gene expression.
- To analyze transcriptomic changes in male workers with a history of long-term NP exposure.
- To identify potential biomarkers for NP inhalation exposure.
Main Methods:
- Whole genome mRNA and miRNA expression analysis from blood samples.
- Blood samples collected pre- and post-machining or welding tasks.
- Workplace exposure assessment via stationary and personal monitoring.
Main Results:
- Decreased expression of stress response genes (DDIT4, FKBP5) post-exposure.
- DDIT4 expression correlated with exposure dose in the Machining group.
- Increased levels of cancer-related microRNAs (miR30-d-5p, miR-3613-5p) in welders linked to NP dose.
Conclusions:
- Nanoparticle exposure contributes to immune system deregulation.
- Altered gene pathways suggest a link to cancer development.
- Recommends protective equipment and further research on NP health effects.
