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Related Experiment Videos

IgE complexes in food allergy.

C Carini, J Brostoff, D G Wraith

    Annals of Allergy
    |August 1, 1987
    PubMed
    Summary
    This summary is machine-generated.

    Food challenges trigger immune complex formation in patients with asthma, eczema, and arthralgia, leading to symptoms. Sodium cromoglycate prevented these complexes and symptoms, suggesting a gut-related IgE-mediated mechanism.

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    Area of Science:

    • Immunology
    • Gastroenterology
    • Allergy Research

    Background:

    • Immune complex formation is implicated in various inflammatory conditions.
    • The role of gut-derived antigens in triggering systemic immune responses requires further elucidation.
    • Understanding IgE-mediated mechanisms in food sensitivities is crucial for developing targeted therapies.

    Purpose of the Study:

    • To investigate the formation of immune complexes containing IgE after food antigen exposure in patients with asthma, eczema, and arthralgia.
    • To determine the correlation between immune complex appearance and symptom onset.
    • To evaluate the efficacy of sodium cromoglycate in preventing immune complex formation and associated symptoms.

    Main Methods:

    • Monitoring of immune complex formation (IgE, IgG, antigen) in circulation.

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  • Food challenge testing in patients diagnosed with asthma, eczema, and arthralgia.
  • Assessment of symptom development before and after food challenge.
  • Evaluation of sodium cromoglycate's effect on immune complex formation and symptoms.

    • Main Results:

    • Immune complexes containing IgE, IgG, and antigen were detected in circulation after food challenge.
    • The appearance of these immune complexes correlated significantly with symptom production.
    • Sodium cromoglycate administration effectively prevented the formation of immune complexes and the subsequent onset of symptoms.

    Conclusions:

    • A local IgE-mediated mechanism in the gut may trigger antigen entry and subsequent immune complex formation.
    • This process appears to alter gut mucosal permeability, leading to delayed-onset symptoms.
    • The observed symptoms could be characterized as a form of serum sickness affecting various organs.