Journal
PATHOGENS
Volume 11, Issue 1, Pages -Publisher
MDPI
DOI: 10.3390/pathogens11010071
Keywords
microbiome; atopic dermatitis; skin colonization; skin infection
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Atopic dermatitis is a complex and unclear disease, with possible causes including changes in the skin barrier, disruptions in the skin microbiome, immune factors, allergens, infections, and environmental and genetic factors. Mechanisms promoting skin colonization by pathogens in atopic skin involve interactions between various factors. Understanding the factors involved in bacterial and fungal colonization in atopic dermatitis can provide insights for treatment and prevention.
Atopic dermatitis (AD) is a condition with a complex and unclear aetiology. Possible causes of AD encompass alterations in the structure and function of the epidermal barrier, disturbances in the skin microbiome, immune factors, allergens, bacterial and fungal infections as well as environmental and genetic factors. In patients with AD, acute skin lesions are colonized by a greater number of bacteria and fungi than chronic lesions, clinically unchanged atopic skin and the skin of healthy people. Mechanisms promoting skin colonization by pathogens include complex interplay among several factors. Apart from disturbances of the skin microbiome, increased adhesion in atopic skin, defects of innate immune response resulting in the lack of or restriction of growth of microorganisms also contribute to susceptibility to the skin colonization of and infections, especially with Staphylococcus aureus. This review of the literature attempts to identify factors that are involved in the pathogenesis of AD-related bacterial and fungal skin colonization. Studies on the microbiome, commensal microorganisms and the role of skin microorganisms in maintaining healthy skin bring additional insight into the treatment and prevention of AD. In the light of presented mechanisms, reduction in colonization may become both causative and symptomatic treatment in AD.
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