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Chemical exposure and intestinal function.

C M Schiller

    Environmental Health Perspectives
    |December 1, 1979
    PubMed
    Summary
    This summary is machine-generated.

    Investigating environmental exposures like heavy metals, herbicides, and jet fuel reveals their impact on intestinal function. This study monitored metabolic pathways and enzyme induction following in vivo exposure.

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    Area of Science:

    • Environmental toxicology
    • Gastrointestinal physiology
    • Biochemistry

    Background:

    • Substance ingestion stems from environmental, residential, and occupational exposures.
    • Assessing toxicant effects on intestinal function requires in vivo/in vitro exposure and monitoring.
    • Understanding these impacts is crucial for public health and risk assessment.

    Purpose of the Study:

    • To demonstrate the utility of in vivo exposure followed by in vitro monitoring for evaluating intestinal toxicant effects.
    • To illustrate how environmental contaminants affect specific biological markers in the gut.

    Main Methods:

    • Utilized an in vivo exposure followed by in vitro monitoring approach.
    • Administered oral doses of representative toxicants: arsenic (heavy metal), 2,3,7,8-tetrachlorodibenzo-p-dioxin (herbicide contaminant), and hydrazine (jet fuel propellant).

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  • Monitored effects on metabolic pathways, cell-specific enzyme induction, and brush border enzyme development.

    • Main Results:

    • Observed measurable changes in intestinal function markers following exposure to diverse toxicants.
    • Demonstrated differential impacts of arsenic, TCDD, and hydrazine on specific biochemical pathways and enzymes.
    • Confirmed the sensitivity of brush border enzymes and metabolic pathways to environmental exposures.

    Conclusions:

    • The in vivo exposure/in vitro monitoring model effectively assesses the gastrointestinal effects of environmental toxicants.
    • Environmental and occupational exposures can significantly alter intestinal biochemical functions.
    • Further research can refine this model for broader toxicological evaluations.