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Approaches to evaluating reproductive hazards and risks

C A Kimmel1

  • 1Reproductive and Developmental Toxicology Branch, (RD-689), U.S. Environmental Protection Agency, Washington, DC 20460.

Environmental Health Perspectives
|July 1, 1993
PubMed
Summary
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Risk assessment for reproductive toxicity has improved data interpretation and standardized hazard identification. New endpoints are recommended for standard study protocols to enhance accuracy.

Area of Science:

  • Toxicology
  • Reproductive Toxicology
  • Risk Assessment

Background:

  • Established protocols for reproductive and developmental toxicity studies exist.
  • Risk assessment approaches necessitate refining these standard protocols.
  • Existing protocols require updated endpoints for comprehensive evaluation.

Purpose of the Study:

  • To critically evaluate the scientific basis for reproductive toxicity risk assessment.
  • To standardize data interpretation and assumptions in risk assessment.
  • To identify research needs for data gaps in reproductive toxicity.

Main Methods:

  • Utilizing standard study protocols for developmental and reproductive toxicity.
  • Incorporating additional endpoint measures into existing protocols.

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  • Applying risk assessment methodologies including NOAEL determination and UF application.

    • Main Results:

    • Development of approaches for risk assessment in reproductive toxicity.
    • Standardization of qualitative and quantitative data use in hazard identification and dose-response.
    • Identification of research gaps in the available database.

    Conclusions:

    • Enhanced risk assessment approaches require additional endpoint measures in standard protocols.
    • These measures include detailed evaluation of neurological, behavioral, and reproductive functions.
    • Derivation of reference doses (RfDs) is refined by incorporating these new endpoints and uncertainty factors.