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Related Experiment Videos

Steroid hormone sulphation in lead workers.

P Apostoli1, L Romeo, E Peroni

  • 1Institute of Occupational Health, University of Verona, Italy.

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

Lead exposure in workers significantly reduces sulphated steroid hormone metabolites, suggesting interference with sulphoconjugation enzymes. This impacts steroid hormone biotransformation pathways in occupational lead exposure.

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Area of Science:

  • Environmental Health
  • Toxicology
  • Endocrinology

Background:

  • Steroid hormone metabolism is crucial for physiological functions.
  • Occupational lead exposure is a significant public health concern.
  • The impact of lead on steroid hormone biotransformation requires further investigation.

Purpose of the Study:

  • To investigate whether lead exposure affects steroid hormone metabolism.
  • To determine if lead interferes with phase I or phase II biotransformation reactions.
  • To elucidate the specific mechanisms of lead's interference with steroid hormone metabolism.

Main Methods:

  • Comparison of urinary hormone metabolites in 10 lead-exposed workers and 10 controls.
  • Measurement of blood lead concentrations (PbB) in both groups.

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  • Analysis of total and sulphated hormone metabolites.

    • Main Results:

    • Blood lead levels in exposed workers ranged from 45-69 µg/100 ml, compared to <25 µg/100 ml in controls.
    • No significant difference in total urinary hormone metabolites was observed.
    • A ~50% reduction in sulphated hormone metabolites was found in lead-exposed workers.

    Conclusions:

    • Lead exposure appears to interfere with the sulphoconjugation phase of steroid hormone metabolism.
    • The findings suggest lead affects cytosol enzymes like sulphotransferase and sulphokinase.
    • Occupational lead exposure may disrupt normal steroid hormone biotransformation.