Skin Barrier in Atopic Dermatitis.

Area of Science:

• Dermatology
• Skin Biology
• Immunology

Background:

• Atopic dermatitis (AD) is characterized by a compromised skin permeability barrier.
• The stratum corneum (SC), crucial for barrier function, relies on keratinocyte differentiation and lipid lamellae, which are disrupted in AD.
• A compromised barrier in AD leads to environmental insults and type 2-dominant inflammation, creating a detrimental cycle.

Purpose of the Study:

• To review the impact of various therapeutic modalities on the skin permeability barrier in atopic dermatitis.
• To highlight the need for optimizing therapeutic strategies based on their effects on barrier function.

Main Methods:

• Review of existing literature on atopic dermatitis treatments and their effects on skin barrier function.
• Analysis of how topical, systemic, and UV therapies influence the stratum corneum structure and permeability.

Main Results:

• Therapies targeting SC structure and anti-inflammatory strategies show differential effects on permeability barrier function.
• UV therapy also impacts the skin barrier, with varying outcomes depending on the specific approach.

Conclusions:

• The diverse therapeutic options for AD necessitate a deeper understanding of their specific impacts on the skin permeability barrier.
• Optimizing treatment strategies to enhance barrier function is crucial for managing atopic dermatitis effectively.