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Title 

Inhibitory effect of ethanol extract of Ampelopsis brevipedunculata rhizomes on atopic dermatitis-like skin inflammation

 

개머루덩굴 알콜 추출물의 아토피 피부염증 억제 효과

Authors 

Y A ChoiJ H YuH D JungSoyoung LeeP H ParkH S LeeT K KwonT Y ShinSeung Woong LeeMun Chual RhoY H JangS H Kim

Publisher 

Elsevier

Issue Date 

2019

Citation 

Journal of Ethnopharmacology

Keywords 

Ampelopsis brevipedunculataAtopic dermatitisHouse dust miteKeratinocytesSkin inflammation

Abstract 

Ethnopharmacological relevance: Extracts from various parts of Ampelopsis brevipedunculata has been used as antiinflammatory agents in Asian folk medicine. Aim of the study: To demonstrate the medicinal effect of the A. brevipedunculata in skin inflammation, specifically atopic dermatitis (AD). Materials and methods: The effect of ethanol extract of A. brevipedunculata rhizomes (ABE) on AD was examined using an AD-like skin inflammation model induced by repeated exposure to house dust mite (Dermatophagoides farinae extract, DFE) and 2,4-dinitrochlorobenzene (DNCB). The mechanism study was performed using tumor necrosis factor (TNF)-α and interferon (IFN)-γ-activated human keratinocytes (HaCaT). Serum histamine and immunoglobulin levels were quantified using enzymatic kits, while the gene expression of cytokines and chemokines was analyzed using quantitative real time polymerase chain reaction. The expression of signaling molecules was detected using Western blot. Results: Oral administration of ABE alleviated DFE/DNCB-induced ear thickening and clinical symptoms, as well as immune cell infiltration (mast cells and eosinophils) into the dermal layer. Serum Immunoglobulin (Ig) E, DFE-specific IgE, IgG2a, and histamine levels were decreased after the administration of ABE. ABE also inhibited CD4+IFN-γ+ and CD4+IL-4+ lymphocyte polarization in lymph nodes and expression of TNF-α, IFN-γ, IL-4, IL- 13, and IL-31 in the ear tissue. In TNF-α/INF-γ-stimulated keratinocytes, ABE inhibited the gene expression of TNF-α, IL-6, IL-1β, and CCL17. In addition, ABE decreased the nuclear localization of signal transducer and activator of transcription 1 and nuclear factor-κB, and the phosphorylation of extracellular signal-regulated kinase and p38 mitogen-activated protein kinase. Conclusion: Collectively, our data demonstrate the pharmacological role and signaling mechanism of ABE in the regulation of skin allergic inflammation, which supports our suggestion that ABE could be developed as a potential therapeutic agent for the treatment of AD.

URI 

https://doi.org/10.1016/j.jep.2019.111850

ISSN 

0378-8741

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2019-07-10


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