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Humanized Mediator Release Assay as a Read-Out for Allergen Potency

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Allergen-specific Ig classes in non-allergic individuals.

G Ciprandi¹, M De Amici, M Tosca

¹Department of Internal Medicine, University of Genoa, Genoa, Italy. gio.cip@libero.it

Journal of Biological Regulators and Homeostatic Agents

|September 18, 2010

Summary

This study reveals that even in non-allergic individuals, the body produces distinct patterns of allergen-specific Immunoglobulin (Ig) classes, including IgE, IgG, IgG4, and IgA, depending on the specific allergen. These findings highlight a nuanced immune response in healthy subjects.

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A Component-resolved Diagnostic Approach for a Study on Grass Pollen Allergens in Chinese Southerners with Allergic Rhinitis and/or Asthma

A Component-resolved Diagnostic Approach for a Study on Grass Pollen Allergens in Chinese Southerners with Allergic Rhinitis and/or Asthma

Published on: June 4, 2017

Area of Science:

Immunology
Allergy Research

Background:

Allergic rhinitis (AR) involves a Th2-skewed immune response with altered cytokine production (e.g., increased IL-4, reduced IFN-gamma) and impaired T regulatory cell function.
This immune dysregulation affects immunoglobulin production in allergic individuals, but specific patterns in non-allergic subjects remain unexplored.

Purpose of the Study:

To investigate the serum levels and patterns of allergen-specific Immunoglobulin (Ig) classes (IgE, IgG, IgG4, IgA) in healthy, non-allergic individuals.
To establish a baseline understanding of Ig class responses to common allergens in the absence of allergic disease.

Main Methods:

Quantitative determination of serum allergen-specific IgE, IgG, IgG4, and IgA levels using the ELISA method.
Analysis included responses to common allergens: mites, cat, Parietaria, grasses, and birch.

Main Results:

Significant differences were observed in serum levels of allergen-specific IgE, IgG, IgG4, and IgA across the tested allergens in non-allergic subjects (p=0.0001 for each Ig class).
This indicates a specific, quantifiable immunoglobulin production pattern even in the absence of allergy.

Conclusions:

The study provides the first evidence that immunoglobulin production patterns are allergen-specific, not only in allergic patients but also in non-allergic individuals.
This research quantitatively characterizes Ig class profiles in healthy subjects, offering a crucial reference for allergy diagnostics and research.