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Related Experiment Videos

Microtiter solid-phase radioimmunoassay for specific immunoglobulin E.

M J Reid, N K Cheung, N J Lewiston

    The Journal of Allergy and Clinical Immunology
    |April 1, 1981
    PubMed
    Summary
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    A new radioimmunoassay accurately measures perennial rye grass-specific immunoglobulin E (IgE). This method, the microtiter solid phase-radioimmunoassay (MSPRIA), shows high correlation with skin testing and RAST, making it suitable for mass screening.

    Area of Science:

    • Immunology
    • Allergy Diagnostics
    • Immunoassays

    Background:

    • Accurate measurement of specific immunoglobulin E (IgE) is crucial for diagnosing allergic diseases.
    • Existing methods for quantifying allergen-specific IgE may have limitations in terms of throughput or reproducibility.
    • Perennial rye grass is a common allergen, necessitating reliable diagnostic tools for grass pollen allergy.

    Purpose of the Study:

    • To describe and validate a novel microtiter solid phase-radioimmunoassay (MSPRIA) for the detection of perennial rye grass-specific IgE.
    • To assess the specificity, reproducibility, and ease of use of the MSPRIA.
    • To compare the performance of MSPRIA with established methods like skin testing and the radioallergosorbent test (RAST).

    Main Methods:

    • A microtiter solid phase-radioimmunoassay (MSPRIA) was developed using flexible polyvinyl chloride microtiter plates.

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  • The assay involves sequential incubation with perennial rye grass antigen, albumin, test sera, and radiolabeled antihuman IgE.
  • Radioactivity bound to wells, indicative of specific IgE levels, was quantified after cutting and counting individual wells.

    • Main Results:

    • The MSPRIA demonstrated high specificity for perennial rye grass antigen and antibody.
    • Assay results showed good reproducibility and were easy to perform.
    • Perennial rye grass-specific IgE levels measured by MSPRIA correlated strongly with skin testing (r=0.92) and RAST (r=0.95) in 31 volunteers.

    Conclusions:

    • The microtiter solid phase-radioimmunoassay (MSPRIA) is a valid and reliable method for quantifying perennial rye grass-specific IgE.
    • The assay's strong correlation with established diagnostic methods and its suitability for mass screening highlight its clinical utility.
    • MSPRIA offers a valuable tool for the diagnosis and management of allergic conditions related to perennial rye grass.