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Related Experiment Videos

A footpad weight assay method to evaluate delayed-type hypersensitivity in the mouse

K Kitamura

    Journal of Immunological Methods
    |January 1, 1980
    PubMed
    Summary

    A new footpad weight assay offers a more objective method for evaluating delayed-type hypersensitivity reactions in mice. This reliable technique minimizes errors, improving the assessment of immune responses to antigens.

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    Area of Science:

    • Immunology
    • Allergy Research
    • Animal Models

    Background:

    • Assessing delayed-type hypersensitivity (DTH) lesions in mice traditionally relies on subjective measurements like footpad swelling or ear thickness.
    • These conventional methods are prone to observer and instrumental errors, limiting objective evaluation.
    • There is a need for a more reliable and quantitative method to assess DTH reactions in preclinical studies.

    Purpose of the Study:

    • To develop and validate a novel, objective assay for quantifying delayed-type hypersensitivity lesions in the mouse footpad.
    • To reduce observer and instrumental variability in the assessment of DTH reactions.
    • To provide a reliable method for evaluating the efficacy of immunomodulatory agents targeting DTH.

    Main Methods:

    • A new footpad weight assay was developed for measuring DTH reactions in mice.

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  • The assay involves comparing the weight of the antigen-challenged footpad to the unchallenged footpad.
  • Results are expressed as weight increase or weight ratio for enhanced accuracy.

    • Main Results:

    • The developed footpad weight assay significantly reduces observer and instrumental errors compared to traditional methods.
    • This method provides reliable and quantitative data for assessing DTH severity.
    • Weight increase and weight ratio calculations offer consistent metrics for immune response evaluation.

    Conclusions:

    • The footpad weight assay is a reliable and objective method for assessing delayed-type hypersensitivity in mice.
    • This assay improves the accuracy and reproducibility of DTH lesion evaluation.
    • The method is suitable for preclinical research requiring precise measurement of immune responses.