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Immune response to Staphylococcus aureus in atopic dermatitis.
Dermatologica
|January 1, 1985
Summary
Patients with atopic dermatitis (AD) show a unique immune response to Staphylococcus aureus, including hyporesponsiveness to cell walls and elevated IgE. These immune changes may link to chronic S. aureus skin colonization in AD.
Area of Science:
- Immunology
- Dermatology
- Microbiology
Background:
- Atopic dermatitis (AD) is characterized by severe skin colonization with Staphylococcus aureus.
- Understanding the immune response to S. aureus is crucial for managing AD.
Purpose of the Study:
- To investigate S. aureus-specific immune responses in AD patients compared to healthy individuals.
- To identify unique immunological features associated with S. aureus colonization in AD.
Main Methods:
- Assessed delayed skin reactivity to purified S. aureus cell walls (PCW).
- Measured serum IgE levels against S. aureus antigens (PCW and protoplast).
- Correlated immune responses with clinical features like skin reactions, lymphadenopathy, and impetiginization.
Main Results:
- AD patients exhibited selective hyporesponsiveness to PCW in delayed skin tests.
- Approximately 50% of AD patients had serum IgE against PCW and soluble S. aureus antigens.
- Elevated PCW-IgE correlated with regional lymphadenopathy and high total IgE, but not immediate skin reactions.
- Impetiginization was not associated with increased PCW-IgE.
Conclusions:
- The study suggests distinct alterations in the S. aureus-specific immune response in AD.
- These immune changes are potentially linked to the persistent S. aureus colonization observed in AD skin.
- Further research into these immune responses could inform novel therapeutic strategies for AD.