Skin Barrier Function and Microtopography in Patients with Atopic Dermatitis

Area of Science:

• Dermatology
• Skin Barrier Research
• Biomedical Engineering

Background:

• Atopic dermatitis (AD) is a growing chronic inflammatory skin condition.
• Skin barrier dysfunction, characterized by increased transepidermal water loss (TEWL) and decreased stratum corneum hydration (SCH), is a key feature of AD.
• Limited data exists on skin microtopography alterations in AD patients.

Purpose of the Study:

• To comprehensively evaluate skin barrier dysfunction in patients with atopic dermatitis.
• To investigate structural and topographical changes in the skin of AD patients.
• To compare skin barrier and topographical parameters between healthy skin and eczematous lesions in AD.

Main Methods:

• A cross-sectional study involving 32 patients diagnosed with atopic dermatitis.
• Measurement of key skin barrier function parameters: TEWL, temperature, erythema, pH, skin hydration, and elasticity.
• Assessment of topographical parameters including scaliness, wrinkles, smoothness, surface area, contrast, and variance on both lesional and healthy skin.

Main Results:

• Flexural eczematous lesions exhibited significantly higher erythema and TEWL, alongside lower SCH and elasticity compared to healthy skin.
• Topographical analysis revealed increased scaliness, smoothness, wrinkles, surface area, contrast, and variance in AD lesions.
• A notable decrease in cell count was observed in lesional skin, indicating compromised skin quality in atopic dermatitis.

Conclusions:

• Both skin barrier function and skin topography are significantly impaired in patients with atopic dermatitis.
• Distinct differences exist in skin barrier parameters and topographical features between healthy skin and eczematous lesions in AD.
• These findings underscore the multifaceted nature of skin damage in atopic dermatitis, affecting both barrier integrity and surface structure.