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Microanalysis of an antimicrobial peptide, β‐defensin‐2, in the stratum corneum from patients with atopic dermatitis

Background  Antimicrobial peptides, such as defensin and cathelicidin, have recently been reported to play important roles in host defence and in cutaneous innate immunity. Although β‐defensin‐2 has been reported to be downregulated in the skin of patients with atopic dermatitis (AD), little is known about its role in the colonization of Staphylococcus aureus in the stratum corneum of patients with AD. A precise evaluation of these peptides in the stratum corneum as an antimicrobial barrier against S. aureus colonization has not yet been performed.