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Related Experiment Videos

Semen quality in workers exposed to 2-ethoxyethanol.

J M Ratcliffe1, S M Schrader, D E Clapp

  • 1Division of Surveillance, National Institute for Occupational Safety and Health, Cincinnati, Ohio 45226, USA.

British Journal of Industrial Medicine
|June 1, 1989
PubMed
Summary

Long-term exposure to 2-ethoxyethanol (2EE) may lower sperm count in men working in metal casting. Further research is needed to confirm this effect on reproductive health.

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Area of Science:

  • Occupational Health
  • Reproductive Toxicology
  • Environmental Medicine

Background:

  • 2-ethoxyethanol (2EE) is used in industrial processes, with potential for skin and inhalation exposure.
  • Previous studies suggest 2EE may negatively impact male reproductive health.
  • Understanding the effects of 2EE on semen quality is crucial for worker safety.

Purpose of the Study:

  • To investigate the association between occupational 2-ethoxyethanol (2EE) exposure and semen quality in male metal casting workers.
  • To assess if long-term exposure to 2EE affects sperm count, concentration, and other semen parameters.

Main Methods:

  • A cross-sectional study involving exposed and non-exposed male workers.
  • Exposure assessment via air monitoring (ppm) and urinary metabolite (2-ethoxyacetic acid, 2EAA) levels.

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  • Semen analysis including sperm count, concentration, motility, viability, and morphology.
  • Statistical analysis adjusted for potential confounding factors like age, abstinence, and lifestyle.

    • Main Results:

    • A significantly lower average sperm count was observed in men exposed to 2EE compared to unexposed men (113 vs. 154 million/ejaculate; p=0.05).
    • No significant differences were found in sperm concentration, semen volume, viability, motility, or morphology between the groups.
    • Urinary 2EAA levels indicated significant exposure to 2EE in the exposed group.

    Conclusions:

    • Occupational exposure to 2-ethoxyethanol (2EE) may be associated with a reduction in sperm count among male workers.
    • While other semen parameters were unaffected, the observed difference in sperm count warrants further investigation.
    • Limitations include low participation rates and the potential for unmeasured confounding factors.