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Summary
Patients with atopic eczema, particularly those with severe cases and high immunoglobulin E (IgE) levels, often exhibit elevated plasma histamine. These levels normalize during remission, suggesting histamine
Area of Science:
- Dermatology
- Immunology
- Allergy Research
Background:
- Atopic eczema is a common inflammatory skin condition.
- Histamine is a key mediator in allergic and inflammatory responses.
- Elevated histamine levels are suspected in atopic eczema pathogenesis.
Purpose of the Study:
- To investigate plasma histamine concentrations in patients with atopic eczema.
- To compare histamine levels between atopic eczema patients and controls.
- To correlate histamine levels with disease severity and serum IgE.
Main Methods:
- Radio-enzymatic assay used to quantify plasma histamine.
- Study included 54 atopic eczema patients and 39 controls (psoriasis, contact dermatitis, healthy volunteers).
- Longitudinal measurements were performed in a subset of patients.
Main Results:
- 17 out of 54 atopic eczema patients had elevated plasma histamine (1.2-5.2 ng/ml).
- No control subjects exceeded 1 ng/ml plasma histamine.
- Higher histamine levels were associated with severe eczema and high serum IgE.
- Seven patients showed normal histamine levels during clinical remission.
Conclusions:
- Elevated plasma histamine is a potential biomarker in atopic eczema.
- Histamine levels correlate with disease severity and IgE.
- Histamine may play a role in atopic eczema exacerbations.