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Updated: Jul 23, 2026

Granulocyte-dependent Autoantibody-induced Skin Blistering

Granulocyte-dependent Autoantibody-induced Skin Blistering

Published on: October 12, 2012

Epidermal pathogenesis of inflammatory dermatoses.

P M Elias¹, L C Wood, K R Feingold

¹Department of Dermatology and Medicine (Metabolism) Services, Veterans Affairs Medical Center, San Francisco, CA, USA.

American Journal of Contact Dermatitis : Official Journal of the American Contact Dermatitis Society

|August 12, 1999

Summary

Dermatitis may stem from epidermal injury, not just inflammation. The stratum corneum acts as a biosensor, releasing signaling molecules that trigger inflammation and skin conditions.

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Area of Science:

Dermatology
Immunology
Epidermal Biology

Background:

Dermatitis is traditionally viewed as an immunological/inflammatory disorder.
Recent research suggests a significant epidermal contribution to various dermatoses.

Purpose of the Study:

To review evidence supporting the epidermis's role in dermatitis pathogenesis.
To explore the stratum corneum's function as a biosensor and regulator of epidermal responses.

Main Methods:

Review of recent scientific literature on epidermal barrier function and signaling pathways.
Analysis of mechanisms involving epidermal cytokines and growth factors.

Main Results:

The stratum corneum functions as a biosensor, regulating epidermal metabolic responses to insults.
Signaling molecules are released as a consequence of epidermal injury, not solely for barrier repair.
These molecules initiate a cytokine cascade leading to inflammation and clinical dermatoses.

Conclusions:

'Outside-to-inside' signaling, initiated by stratum corneum injury, contributes to the pathogenesis of dermatoses.
Inflammation, driven by cytokine cascades, underlies the clinical presentation of various skin diseases.
The epidermis plays a crucial role in regulating and responding to external factors, influencing skin health.