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Related Experiment Videos

Relationships between laboratory and human studies.

D B Clayson

    Journal of Environmental Pathology and Toxicology
    |November 1, 1977
    PubMed
    Summary
    This summary is machine-generated.

    Extrapolating chemical carcinogenesis data from animals to humans faces significant challenges, particularly with dose differences. A pragmatic approach is favored over unsupported mathematical models for these complex extrapolations.

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    Area of Science:

    • Toxicology
    • Carcinogenesis Research
    • Risk Assessment

    Background:

    • Trans-species extrapolation of chemical carcinogenesis data presents significant challenges.
    • Differences in experimental techniques and modifying factors complicate direct application to human health.
    • High-dose animal study results pose difficulties when extrapolating to low-dose human exposures.

    Purpose of the Study:

    • To examine the challenges in extrapolating chemical carcinogenesis experiment results from animals to humans.
    • To discuss the limitations of current epidemiological and experimental methodologies in dose-response extrapolation.
    • To advocate for a pragmatic approach over purely mathematical methods for risk assessment.

    Main Methods:

    • Review of experimental techniques used in chemical carcinogen identification.

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  • Analysis of modifying factors influencing carcinogenesis experiments.
  • Discussion of epidemiological and experimental data limitations.

    • Main Results:

    • Current methodologies are insufficient for accurate extrapolation of high-dose animal carcinogen data to low-dose human exposures.
    • Significant challenges exist in accounting for dose-response discrepancies between species.
    • Mathematical extrapolation models are considered largely unsupported for this context.

    Conclusions:

    • Trans-species extrapolation of chemical carcinogenesis data requires careful consideration of experimental limitations.
    • A pragmatic approach is recommended for addressing dose-response extrapolation problems in human risk assessment.
    • Further development of methodologies is needed to bridge the gap between animal study findings and human health implications.