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Related Experiment Videos

Antigen-specific detection of soluble immune complexes by a solid phase specific antibody system

W Pernice, H H Sedlacek

    Journal of Immunological Methods
    |January 1, 1979
    PubMed
    Summary

    A new assay detects antigen-specific immune complexes in patient serum. This method identifies immune complexes in slight antigen excess, potentially aiding in diagnosing immune complex diseases.

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    Area of Science:

    • Immunology
    • Assay Development

    Background:

    • Immune complexes play a role in various diseases.
    • Detecting soluble immune complexes, especially in antigen excess, is crucial for understanding immune complex-mediated pathology.

    Purpose of the Study:

    • To develop and validate a novel antigen-specific immune complex assay.
    • To quantify soluble immune complexes in patient serum, particularly those in antigen excess.

    Main Methods:

    • Developed an assay using xenogeneic, antigen-specific antibodies immobilized on a solid phase.
    • Incubated patient serum to capture immune complexes, followed by detection with a labeled antibody against human immunoglobulins.
    • Validated the assay using artificial and patient-derived immune complexes (tetanus toxoid, HBsAg/anti-HBsAg).

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    Main Results:

    • The assay reliably detects antigen-specific immune complexes.
    • Demonstrated a low coefficient of variation (2.5%), indicating high reliability.
    • Successfully detected soluble immune complexes in slight antigen excess.

    Conclusions:

    • The developed assay is effective for detecting antigen-specific immune complexes in slight antigen excess.
    • This assay has potential applications in diagnosing and studying immune complex diseases.