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Related Experiment Videos

An in vitro skin corrosivity test--modifications and validation.

G J Oliver, M A Pemberton, C Rhodes

    Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association
    |June 1, 1986
    PubMed
    Summary
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    This study presents an in vitro rat epidermal slice technique to identify skin corrosive chemicals. The validated method offers a reproducible, objective pre-screen for animal testing, enhancing chemical safety assessments.

    Area of Science:

    • Toxicology
    • Dermatology
    • In vitro testing

    Background:

    • Chemicals can cause skin lesions.
    • Animal testing for skin corrosivity is traditional but has limitations.
    • Need for reliable in vitro alternatives.

    Purpose of the Study:

    • Develop and validate an in vitro rat epidermal slice technique.
    • Identify chemicals with potential for skin corrosivity.
    • Improve specificity and sensitivity for chemical irritancy and corrosivity.

    Main Methods:

    • Utilized a rat epidermal slice model.
    • Measured stratum corneum lysis via electrical resistance.
    • Validated with 63 chemicals initially, then a double-blind trial with 34 corrosive and 36 irritant chemicals.

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    Main Results:

    • Initial validation showed high sensitivity for corrosives, lower for irritants.
    • Modified technique improved specificity (fewer false positives).
    • Double-blind trial achieved 100% sensitivity and 88% specificity.

    Conclusions:

    • The in vitro rat epidermal slice technique is robust and reproducible.
    • It effectively identifies skin-corrosive chemicals.
    • The model serves as a valuable pre-screen for animal tests, providing quantifiable data.