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Related Experiment Videos

Gender differences in animal bioassays for carcinogenicity

R A Griesemer1, S L Eustis

  • 1National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709.

Journal of Occupational Medicine. : Official Publication of the Industrial Medical Association
|August 1, 1994
PubMed
Summary

Animal studies identified 20 substances causing breast tumors, 13 causing uterine tumors, and 8 causing ovarian tumors. These findings are crucial for occupational and environmental health risk assessment.

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Area of Science:

  • Toxicology
  • Carcinogenesis
  • Occupational Health

Background:

  • Animal bioassays are critical for assessing carcinogenicity in occupational health.
  • Controlled animal studies provide definitive data on substance potency and carcinogenic activity.
  • This data informs human health risk assessments and epidemiological studies.

Purpose of the Study:

  • To alert occupational and environmental health professionals to specific substances identified in animal studies.
  • To highlight substances that induce tumors in reproductive organs (breast, uterus, ovaries).

Main Methods:

  • Long-term animal studies conducted by the National Toxicology Program (NTP).
  • Evaluation of carcinogenicity and tumor incidence across multiple body sites.
  • Analysis of substances and defined mixtures for carcinogenic potential.

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Main Results:

  • 20 substances were found to induce breast tumors in animal models.
  • 13 substances were identified as causing uterine tumors.
  • 8 substances produced ovarian tumors, with neoplasms also observed at other sites.

Conclusions:

  • Findings underscore the importance of animal bioassays in identifying potential human carcinogens.
  • Further research on molecular measures in humans and animals is needed to reduce extrapolation uncertainties.
  • This information aids in identifying substances of concern for occupational and environmental exposure.