Inhibition of nitric oxide production and mRNA expressions of proinflammatory mediators by xylarinic acid A in RAW 264.7 cells

Chang Geon Kim, Tae Wan Kim, Mehari Endale, Taddesse Yayeh, Gon Sik Seo, Jae Yeul Cho, Hwa Jin Park, Sang Keun Kim, In Kyoung Lee, Bong Sik Yun, Man Hee Rhee

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Mushrooms possess vast and yet unknown source of powerful new pharmaceutical products, which contain active biomolecules. Xylarinic acid A isolated from a mushroom, Xylaria polymorpha, has been reported to have free radicals scavenging property and anti-fungal activity. However, information of its anti-inflammatory activity is scarce. Therefore, the objective of this study was to examine the effect of the compound on the gene expression levels of inflammatory mediators and pro-inflammatory cytokines. MTT assay, NO assay, semi-quantitative reverse transcription-polymerase chain reaction (RT- PCR) and quantitative real time PCR (qPCR) were performed to determine the effect of xylarinic acid on cell viability, NO production and mRNA expression levels in LPS-treated RAW 264.7 mouse macrophage-like cells. As such, xylarinic acid A inhibited nitric oxide production and mRNA expressions of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), interleukin-1β (IL-1β) and interleukin-6 (IL-6) in a concentration dependant pattern without cytotoxicity effect. Our preliminary result indicates that xylarinic acid A might have anti-inflammatory property.

Original languageEnglish
Pages (from-to)2370-2378
Number of pages9
JournalJournal of Medicinal Plants Research
Volume4
Issue number22
StatePublished - 18 Nov 2010

Keywords

  • Inflammation
  • Inflammatory mediators
  • Macrophages
  • Xylarinic acid a

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