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Related Experiment Videos

IgE levels in intestinal juice

D Belut, D A Moneret-Vautrin, J P Nicolas

    Digestive Diseases and Sciences
    |May 1, 1980
    PubMed
    Summary
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    Elevated immunoglobulin E (IgE) levels in intestinal secretions may indicate type I food allergy (immediate hypersensitivity). This finding was observed in patients with food allergies and other allergic conditions compared to healthy individuals.

    Area of Science:

    • Immunology
    • Gastroenterology
    • Allergy Research

    Background:

    • Immediate hypersensitivity, or type I food allergy, is a significant health concern.
    • The role of intestinal immunoglobulin E (IgE) in diagnosing food allergies requires further elucidation.
    • Understanding IgE levels in intestinal secretions can offer insights into allergic responses within the gastrointestinal tract.

    Purpose of the Study:

    • To investigate the significance of immunoglobulin E (IgE) levels in intestinal secretions for recognizing type I food allergy.
    • To compare IgE levels in intestinal secretions across different patient groups, including healthy controls, those with gastrointestinal disorders, and individuals with various allergic conditions.

    Main Methods:

    • Comparative study involving four groups: healthy controls/non-small intestinal GI disorders, small intestinal disease patients, allergy patients without food intolerance, and patients with atopic food sensitivity.

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  • Analysis of IgE levels in intestinal secretions and serum.
  • Consideration of proteolysis in intestinal fluid.

    • Main Results:

    • A statistically significant increase in intestinal IgE levels was observed in patients with type I food allergy and those with other allergic manifestations compared to healthy controls.
    • Increased serum IgE levels were associated with elevated intestinal IgE.
    • Proteolysis in intestinal fluid did not obscure the observed increase in IgE levels.

    Conclusions:

    • Elevated IgE levels in intestinal secretions are strongly associated with type I food allergy.
    • The findings suggest a potential role for intestinal IgE in the diagnosis of food allergies.
    • Increased IgE synthesis within the lamina propria of the small intestine is a probable, though not definitively established, mechanism.