NDLI: Artemisia iwayomogi (Dowijigi) inhibits lipopolysaccharide-induced inflammation in RAW264.7 macrophages by suppressing the NF-κB signaling pathway.

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Artemisia iwayomogi (Dowijigi) inhibits lipopolysaccharide-induced inflammation in RAW264.7 macrophages by suppressing the NF-κB signaling pathway.

Content Provider	Europe PMC
Author	Kim, Seong Min Vetrivel, Preethi Kim, Hun Hwan Ha, Sang Eun Saralamma, Venu Venkatarame Gowda Kim, Gon Sup
Copyright Year	2020
Abstract	Inflammatory diseases are an important health concern and have a growing incidence worldwide. Thus, developing novel and safe drugs to treat these disorders remains an important pursuit. Artemisia iwayomogi, locally known as Dowijigi (DJ), is a perennial herb found primarily in Korea and is used to treat various diseases such as hepatitis, inflammation and immune disorders. In the present study, the anti-inflammatory effects of a polyphenolic extract from the DJ flower (PDJ) in lipopolysaccharide (LPS)-stimulated mouse macrophage RAW264.7 cells were investigated. Cell cytotoxicity was assessed using the MTT assay. The production of nitric oxide (NO) and prostaglandin E2 (PGE2) was measured by Griess and ELISA analysis, respectively. The expression levels of inducible nitric oxide (iNOS) and cyclooxygenase-2 (COX2) were examined by western blot analysis. Reverse transcription-quantitative PCR was performed to detect the mRNA expression levels of pro-inflammatory cytokines, including tumor necrosis factor α (TNFα), interleukin (IL)-6 and IL-1β, as well as COX2 and iNOS. The production of NO and PGE2 was significantly decreased following treatment with PDJ. The mRNA expression levels of TNFα, IL-6, IL-1β, COX2 and iNOS were significantly decreased in LPS-induced PDJ co-treated cells compared with the group treated with LPS alone. Western blot analysis indicated that PDJ downregulated the LPS-induced expression of iNOS and COX2, as well as the expression of NF-κB proteins. In conclusion, the present study demonstrated that PDJ exerted anti-inflammatory effects in LPS-induced macrophage cells by suppressing the NF-κB signaling pathway. Therefore, PDJ may be used as a potential therapeutic agent in inflammation.
ISSN	17920981
Journal	Experimental and Therapeutic Medicine
Volume Number	19
PubMed Central reference number	PMC7027351
Issue Number	3
PubMed reference number	32104280
e-ISSN	17921015
DOI	10.3892/etm.2020.8472
Language	English
Publisher	D.A. Spandidos
Publisher Date	2020-01-27
Access Restriction	Open
Rights License	This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made. Copyright: © Kim et al.
Subject Keyword	Dowijigi anti-inflammation inducible nitric oxide synthase cyclooxygenase-2 NF-κB signaling
Content Type	Text
Resource Type	Article
Subject	Immunology and Microbiology Cancer Research

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