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Updated: Aug 11, 2026
07:10
Application of Biochip Microfluidic Technology to Detect Serum Allergen-specific Immunoglobulin E (sIgE)
Published on: April 21, 2019
Summary
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.
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.
- 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.
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