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Related Experiment Videos

Flow-assisted allergy diagnosis: current applications and future perspectives.

D G Ebo1, J Sainte-Laudy, C H Bridts

  • 1Department of Immunology, Allergology, Rheumatology, University Antwerp (UA), Antwerpen, Belgium.

Allergy
|August 22, 2006
PubMed
Summary

Flow-assisted allergy diagnosis offers a valuable alternative to traditional methods by measuring basophil activation markers. This technique aids in identifying allergens and diagnosing various allergic and non-allergic hypersensitivity reactions.

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Area of Science:

  • Immunology
  • Allergy Diagnostics
  • Flow Cytometry

Background:

  • Traditional allergy diagnosis relies on serum-specific immunoglobulin E (IgE) and skin tests.
  • Identifying specific allergens and cross-reactive structures can be challenging.
  • Basophils play a key role in allergic reactions by releasing mediators and altering surface marker expression.

Purpose of the Study:

  • To review the principles and applications of flow-assisted allergy diagnosis.
  • To highlight the utility of basophil activation tests in clinical and research settings.
  • To provide insights into the future evolution of this diagnostic approach.

Main Methods:

  • Quantification of alterations in basophilic activation marker expression using flow cytometry.

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  • In vitro challenge of basophils with specific allergens or substances.
  • Detection of upregulated markers on basophils via specific monoclonal antibodies.

    • Main Results:

    • Flow-assisted analysis effectively detects basophil activation upon allergen challenge.
    • The technique is applicable to IgE-mediated allergies (inhalants, food, latex, venoms, drugs).
    • It is also valuable for non-IgE-mediated reactions like drug hypersensitivity and chronic urticaria.

    Conclusions:

    • Flow-assisted allergy diagnosis provides a robust method for identifying allergens.
    • This technique expands diagnostic capabilities beyond traditional IgE testing.
    • Basophil activation tests are crucial for diagnosing diverse hypersensitivity conditions.