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Increased adherent suppressor cell activity in allergic children.

Annals of Allergy

|September 1, 1981

Summary

In allergic children, monocytes suppress regulatory T cell function, leading to increased immunoglobulin E (IgE) production. This finding sheds light on the immune mechanisms behind atopic conditions.

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Evaluation of Th1/Th2 ratio and cytokine production profile during acute exacerbation and convalescence in asthmatic children.

Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology·2001

Area of Science:

Immunology
Allergy Research
Cell Biology

Background:

Elevated immunoglobulin E (IgE) levels are characteristic of atopic diseases.
Monocytes play a complex role in immune regulation and inflammation.

Purpose of the Study:

To investigate the role of monocytes in regulating IgE biosynthesis in asthmatic children.
To identify potential mechanisms contributing to heightened IgE production in atopic individuals.

Main Methods:

Separation of monocytes from mononuclear cells using adherence.
Activation of monocytes with lipopolysaccharide (LPS).
Measurement of IgE production in patient and normal cell cultures.

Main Results:

Mononuclear cells (MNCs) from asthmatic children produced significantly more IgE than those from healthy controls.
Depletion of monocytes reduced IgE production in asthmatic MNCs but not in normal MNCs.
Patient monocytes enhanced T cell activity related to IgE biosynthesis in both groups.

Conclusions:

Suppressor adherent cells in allergic patients inhibit regulatory T cell function.
These suppressor cells may contribute to the pathogenesis of increased IgE production in atopy.

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