Journal
JOURNAL OF ETHNOPHARMACOLOGY
Volume 292, Issue -, Pages -Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.jep.2022.115233
Keywords
Atopic dermatitis; Eclipta prostrata L; House dust mite; Skin barrier dysfunction; Immune balance
Categories
Funding
- National Research Foundation of Korea (NRF) -Korea government (MSIP
- Ministry of Science, ICT & Future Planning) [NRF-2021R1F1A1058077]
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The study confirmed the anti-inflammatory effect of Eclipta prostrata Linne' in improving symptoms of atopic dermatitis, restoring skin barrier function and immune balance.
Ethnopharmacological relevance: Atopic dermatitis (AD) is a kind of inflammation on the skin following with swollen, itchy, dryness and cracked skin. Though the exact cause of AD is unknown, there are evidence that people with AD have a compromised skin barrier along with inflammation. Eclipta prostrata Linne ' is a traditional herbal medicinal plant, has been used for the diabetes, obesity, jaundice, and inflammation. We supposed E. prostrata L. has an anti-inflammatory effect on the skin. Aim of the study: We aimed to assess the effect of E. prostrata L. EtOH extract (EP) and elucidate the associated molecular mechanisms. Materials and methods: The effect of EP and the molecular mechanisms were eluciated in house dust mite (HDM)induced AD mice model and TNF-alpha/IFN-gamma-stimulated HaCaT keratinocytes by histological analysis, enzymelinked immunosorbent assay, quantitative real time polymerase chain reaction, and Western blot. Results: The results revealed that EP improved the progression of AD symptoms, decreasing epidermis/dermis thickness, infiltrated immune cells, and restored the skin barrier dysfunction and imbalanced immune response. EP suppressed the expressions of T helper (Th)1, Th2, Th17 cytokines, phosphorylation of extracellular signalregulated kinase/signal transducer and activator of transcription 1 in skin of HDM-induced AD mice as well as inhibition the translocation of nuclear factor-kappa B in HaCaT keratinocytes. Conclusions: Collectively, EP improved the allergic inflammation of the skin through recovery the skin barrier, and regulation the immune balance. These results suggest EP may have therapeutic potential as an anti-atopic agent.
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