Abstract
Atopic dermatitis (AD) is a chronic inflammatory skin condition with complex etiology that is dependent upon interactions between the host and the environment. Acute skin lesions exhibit the features of a Th2-driven inflammatory disorder, and many patients are highly atopic. The skin barrier plays key roles in immune surveillance and homeostasis, and in preventing penetration of microbial products and allergens. Defects that compromise the structural integrity or else the immune function of the skin barrier play a pivotal role in the pathogenesis of AD. This article provides an overview of the array of molecular building blocks that are essential to maintaining healthy skin. The basis for structural defects in the skin is discussed in relation to AD, with an emphasis on filaggrin and its genetic underpinnings. Aspects of innate immunity, including the role of antimicrobial peptides and proteases, are also discussed.
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Abbreviations
- AD:
-
atopic dermatitis
- AMPs:
-
antimicrobial peptides
- CLDN:
-
claudin
- DNCB:
-
2,4-dinitrochlorobenzene
- KLK:
-
kallikrein
- NMF:
-
natural moisturizing factors
- PAR:
-
protease-activated receptor
- TEWL:
-
transepidermal water loss
References
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This work is supported by NIH grants R01 AR059058 and R01 AI052196.
Rachana Agrawal and Judith A. Woodfolk declare that they have no conflict of interest.
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This article does not contain any studies with human or animal subjects performed by any of the authors.
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Agrawal, R., Woodfolk, J.A. Skin Barrier Defects in Atopic Dermatitis. Curr Allergy Asthma Rep 14, 433 (2014). https://doi.org/10.1007/s11882-014-0433-9
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DOI: https://doi.org/10.1007/s11882-014-0433-9