Clinical studies of styrene workers: initial findings

Area of Science:

• Occupational Health
• Toxicology
• Industrial Hygiene

Background:

• Styrene monomer is a widely used chemical, primarily for polystyrene production.
• Workers in styrene monomer production facilities may face significant exposure.
• Understanding the health effects of occupational styrene exposure is crucial.

Purpose of the Study:

• To investigate the clinical health effects of occupational styrene monomer exposure.
• To compare health outcomes between high and low exposure groups of production workers.

Main Methods:

• A clinical survey of 493 workers at a U.S. styrene monomer production facility.
• Assessment of relative exposure durations and levels based on occupational histories.
• Evaluation of acute symptoms, pulmonary function (FEV1/FV, FVC), liver function tests (GCTP), chest X-rays, and hematological parameters.

Main Results:

• Significant differences observed between high and low exposure groups.
• Increased prevalence of acute prenarcotic symptoms in the high exposure group.
• Higher incidence of acute lower respiratory symptoms in the high exposure group.
• Elevated gamma-glutamyl transpeptidase (GCTP) levels and reduced FEV1/FV ratio in highly exposed workers.
• No distinct patterns noted in other liver function tests, chest X-rays, FVC, or hematological parameters.

Conclusions:

• Occupational exposure to styrene monomer is associated with specific acute health effects.
• Potential for respiratory and liver function impairment exists at elevated exposure levels.
• Further investigation, including a mortality study, is warranted to fully understand long-term health impacts.