Abstract Title:

Glycyrrhizin ameliorates atopic dermatitis-like symptoms through inhibition of HMGB1.

Abstract Source:

Int Immunopharmacol. 2018 Apr 24 ;60:9-17. Epub 2018 Apr 24. PMID: 29702284

Abstract Author(s):

Ying Wang, Yue Zhang, Ge Peng, Xiuping Han

Article Affiliation:

Ying Wang


Atopic dermatitis (AD) is a chronic relapsing inflammatory skin disease prevalent worldwide. This study investigated the effects of glycyrrhizin, an extract of licorice root, on the well-established model of 2,4-dinitrochlorobenzene-induced AD-like symptoms in mice. The severity of dermatitis, histopathological changes, serum IgE levels, changes in expression of high-mobility group box 1 (HMGB1), the receptor for advanced glycation end products (RAGE), nuclear factor (NF)-κB and inflammatory cytokines were evaluated. Treatment with glycyrrhizin inhibited the HMGB1 signaling cascade and ameliorated the symptoms of AD. Furthermore, in an in vitro study, the expression of RAGE was detected in a mouse mast cell line, P815 cells, and rmHMGB1 was found to be a potent inducer of mast cell activation by increasing Cainflux, upregulating the CD117 and activating NF-κB signaling; these effects were also inhibited by glycyrrhizin. These findings implicate HMGB1 in the pathogenesis of AD and suggest that GL could be an effective therapeutic approach for cutaneous inflammation.

Study Type : Animal Study, In Vitro Study

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Sayer Ji
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