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Related Experiment Videos

Interference of simultaneous skin tests in delayed hypersensitivity.

M Von Blomberg, G H Boerrigter, R J Scheper

    Immunology
    |August 1, 1978
    PubMed
    Summary

    Simultaneous skin testing in guinea pigs showed minimal interference between different antigens. However, using the same antigen for multiple tests can suppress delayed hypersensitivity reactions, impacting quantitative results.

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    Area of Science:

    • Immunology
    • Dermatology

    Background:

    • Simultaneous skin testing is used to assess immune responses.
    • Potential interference between concurrent skin tests requires investigation.

    Purpose of the Study:

    • To investigate the interference of simultaneous skin test reactions.
    • To evaluate the impact on delayed hypersensitivity (DH) reactions.

    Main Methods:

    • Guinea pigs were used to study skin test reactions with four antigens: ovalbumin, horse cytochrome c, PPD, and oxazolone.
    • Reactions were assessed at 4, 24, and 48 hours by measuring skin thickness, erythema diameter, and erythema intensity.
    • Both Arthus and DH reactions were studied.

    Main Results:

    • No interference was observed when an Arthus reaction was elicited with a DH reaction.

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  • Minimal interference occurred between two simultaneous DH reactions using different antigens.
  • Using the same antigen for both tests resulted in suppression of at least one DH reaction parameter in nearly all experiments.
  • Increasing the distance between tests did not reduce suppression.

    • Conclusions:

    • Multiple skin testing can provide a qualitative assessment of delayed hypersensitivity.
    • Avoid simultaneous skin testing when reliable quantitative data are required due to potential suppression.