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The role of the histamine H 4 receptor in atopic dermatitis and psoriasis
Author(s) -
SchaperGerhardt Katrin,
Rossbach Kristine,
Nikolouli Eirini,
Werfel Thomas,
Gutzmer Ralf,
Mommert Susanne
Publication year - 2020
Publication title -
british journal of pharmacology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.432
H-Index - 211
eISSN - 1476-5381
pISSN - 0007-1188
DOI - 10.1111/bph.14550
Subject(s) - psoriasis , histamine , atopic dermatitis , receptor , histamine receptor , immunology , medicine , dermatology , pharmacology , antagonist
Atopic dermatitis (AD) and psoriasis are common skin diseases with a high negative impact on patients' quality of life. Both diseases are mediated by a pro-inflammatory infiltrate consisting of several cell types, such as T-cells, antigen-presenting cells and granulocytes and display disturbed keratinocyte differentiation. Given the fact that histamine levels are also highly elevated in inflamed skin, it is likely that histamine plays a relevant role in disease pathology. However, antagonists blocking histamine H 1 receptor or H 2 receptors are largely ineffective in reducing chronic symptoms in AD and psoriasis. Over the last years, much research has been undertaken to shed light into the mode of action of the most recently discovered histamine H 4 receptor. This research has shown that H 4 receptor antagonists display antipruritic and anti-inflammatory effects not only in mouse models but also in first human clinical trials, and therefore, H 4 receptors might present a novel therapeutic target. In this review, we summarize the effects of the H 4 receptors on different cell types, mouse models and clinical studies in regard to AD and psoriasis respectively. LINKED ARTICLES: This article is part of a themed section on New Uses for 21st Century. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v177.3/issuetoc.

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