Topic
Atopic dermatitis
About: Atopic dermatitis is a research topic. Over the lifetime, 19729 publications have been published within this topic receiving 495604 citations. The topic is also known as: Allergic (intrinsic) eczema (disorder) & Atopic dermatitis.
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Journal Article•
4,445 citations
TL;DR: It is shown that two independent loss-of-function genetic variants (R510X and 2282del4) in the gene encoding filaggrin (FLG) are very strong predisposing factors for atopic dermatitis.
Abstract: Atopic disease, including atopic dermatitis (eczema), allergy and asthma, has increased in frequency in recent decades and now affects approximately 20% of the population in the developed world. Twin and family studies have shown that predisposition to atopic disease is highly heritable. Although most genetic studies have focused on immunological mechanisms, a primary epithelial barrier defect has been anticipated. Filaggrin is a key protein that facilitates terminal differentiation of the epidermis and formation of the skin barrier. Here we show that two independent loss-of-function genetic variants (R510X and 2282del4) in the gene encoding filaggrin (FLG) are very strong predisposing factors for atopic dermatitis. These variants are carried by approximately 9% of people of European origin. These variants also show highly significant association with asthma occurring in the context of atopic dermatitis. This work establishes a key role for impaired skin barrier function in the development of atopic disease.
2,605 citations
TL;DR: Assessment methods for atopic dermatitis are not standardized, and therapeutic studies are difficult to interpret, so consensus on these methods is needed to obtain a consensus on them.
Abstract: Background . Assessment methods for atopic dermatitis (AD) are not standardized, and therapeutic studies are difficult to interpret. Aims . To obtain a consensus on
1,976 citations
TL;DR: A deficiency in the expression of antimicrobial peptides may account for the susceptibility of patients with atopic dermatitis to skin infection with S. aureus.
Abstract: Background The innate immune system of human skin contains antimicrobial peptides known as cathelicidins (LL-37) and β-defensins. In normal skin these peptides are negligible, but they accumulate in skin affected by inflammatory diseases such as psoriasis. We compared the levels of expression of LL-37 and human β-defensin 2 (HBD-2) in inflamed skin from patients with atopic dermatitis and from those with psoriasis. Methods The expression of LL-37 and HBD-2 protein in skin-biopsy specimens from patients with psoriasis, patients with atopic dermatitis, and normal subjects was determined by immunohistochemical analysis. The amount of antimicrobial peptides in extracts of skin samples was also analyzed by immunodot blot analysis (for LL-37) and Western blot analysis (for HBD-2). Quantitative, real-time reverse-transcriptase–polymerase-chain-reaction (RT-PCR) assays were used to confirm the relative expression of HBD-2 and LL-37 messenger RNA (mRNA) in the skin-biopsy specimens. These peptides were also tested...
1,807 citations