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Updated: Jul 23, 2026
12:23
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.
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.
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.
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