Basophils in atopic dermatitis: Immunologic roles and clinical implications

Area of Science:

• Immunology
• Dermatology
• Allergy

Background:

• Atopic dermatitis (AD) is a chronic inflammatory skin disease linked to epidermal barrier dysfunction and immune responses.
• Staphylococcus aureus colonization often correlates with increased AD severity.
• Emerging research highlights basophils' significant role in AD's local and systemic immune responses.

Purpose of the Study:

• To review the immunologic functions of basophils in AD pathogenesis.
• To discuss basophils as potential biomarkers and therapeutic targets for AD.
• To outline future directions for basophil-centered AD management strategies.

Main Methods:

• Review of recent scientific literature on basophil immunology in AD.
• Analysis of basophil mediator release (IL-4, IL-13, histamine, IL-31) in AD.
• Evaluation of the basophil activation test (BAT) for AD diagnosis and treatment monitoring.

Main Results:

• Basophils infiltrate inflamed skin and release key cytokines (IL-4, IL-13) driving AD.
• Basophil-derived mediators contribute to inflammation, pruritus, and allergic sensitization.
• The basophil activation test shows promise for assessing AD and treatment response.

Conclusions:

• Basophils are crucial players in AD pathogenesis, influencing immune responses and disease severity.
• Basophils represent promising biomarkers and therapeutic targets for atopic dermatitis.
• Targeting basophil activity with therapies like dupilumab offers new avenues for AD treatment.