Related Experiment Videos
Liver function alterations in synthetic leather workers exposed to dimethylformamide
A Fiorito1, F Larese, S Molinari
1Istituto di Medicina del Lavoro, Universitá di Trieste, Italy.
American Journal of Industrial Medicine
|September 1, 1997
Summary
Dimethylformamide (DMF) exposure in synthetic leather workers can cause liver damage, even below air safety limits. Accidental skin contact increases absorption, making air monitoring alone insufficient for assessing worker risk.
Area of Science:
- Occupational Health
- Toxicology
- Environmental Medicine
Background:
- Dimethylformamide (DMF) is a common industrial solvent.
- Occupational exposure to DMF can pose health risks.
- Threshold Limit Values (TLVs) are established to minimize workplace exposure.
Purpose of the Study:
- To investigate the prevalence of chronic liver function alterations in workers exposed to DMF.
- To assess the adequacy of air monitoring in evaluating worker exposure to DMF.
Main Methods:
- Cross-sectional study of 75 synthetic leather factory workers.
- Biological monitoring of monomethylformamide (NMF) in urine.
- Worker surveys for symptoms and comparison with unexposed controls.
- Covariance analysis (ANCOVA) to compare enzyme levels, adjusting for confounders.
Main Results:
- Elevated liver function abnormalities (22.7%) and disulfiram-like symptoms (50%) were observed in exposed workers.
- Urine NMF levels showed wide variation, suggesting potential overexposure.
- Exposed workers had significantly higher enzyme levels than controls after adjustments.
- Air monitoring alone was insufficient to capture total DMF uptake.
Conclusions:
- DMF exposure can lead to liver disease even when air concentrations are below TLVs.
- Accidental dermal contact significantly increases DMF absorption.
- Biological monitoring and consideration of dermal exposure are crucial for accurate risk assessment.