BMC Complementary and Alternative Medicine | |
Anti-inflammatory effect of ethanolic extract from Myagropsis myagroides on murine macrophages and mouse ear edema | |
Hyeung-Rak Kim1  Jae-Il Kim1  Chi-Won Lim2  Na Young Yoon2  Bok-Mi Jung3  Taisun Shin3  Jong-Soon Kim1  Ji-Woong Choi1  Min-Sup Lee1  Eun-Ji Joung1  | |
[1] Department of Food Science and Nutrition, Pukyong National University, Busan, 608-737, South Korea;Food and Safety Research Division, National Fisheries Research and Development Institute, Gijang-gun, Busan, 619-705, Korea;Department of Food Science and Nutrition, Chonnam National University, Yeosu, 550-749, South Korea | |
关键词: RAW 264.7 cells; NF-κB; MAPK; Myagropsis myagroides; Anti-inflammation; | |
Others : 1231954 DOI : 10.1186/1472-6882-12-171 |
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received in 2012-05-21, accepted in 2012-09-27, 发布年份 2012 | |
【 摘 要 】
Background
This study aims to investigate anti-inflammatory effect of ethanolic extract of Myagropsis myagroides (EMM) in the lipopolysaccharide (LPS)-stimulated RAW 264.7 macrophages and the phorbol 12-myristate 13-acetate (PMA)-induced ear edema in mice, and to clarify its underlying molecular mechanisms.
Methods
The levels of nitric oxide (NO), prostaglandin E2 (PGE2), and pro-inflammatory cytokines were measured by Griess assay and enzyme linked immunosorbent assay. The expressions of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), mitogen-activated protein kinases (MAPKs), and Akt were measured using Western blotting. Nuclear translocation and transcriptional activation of nuclear factor-κB (NF-κB) were determined by immunocytochemistry and reporter gene assay, respectively. PMA-induced mouse ear edema was used as the animal model of inflammation. Anti-inflammatory compounds in EMM were isolated using high-performance liquid chromatography and identified by nuclear magnetic resonance.
Results
EMM significantly inhibited the production of NO, PGE2, and pro-inflammatory cytokines in a dose-dependent manner and suppressed the expression of iNOS and COX-2 in LPS-stimulated RAW 264.7 cells. EMM strongly suppressed nuclear translocation of NF-κB by preventing degradation of inhibitor of κB-α as well as by inhibiting phosphorylation of Akt and MAPKs. EMM reduced ear edema in PMA-induced mice. One of the anti-inflammatory compounds in EMM was identified as 6,6’-bieckol.
Conclusions
These results suggest that the anti-inflammatory properties of EMM are associated with the down-regulation of iNOS, COX-2, and pro-inflammatory cytokines through the inhibition of NF-κB pathway in LPS-stimulated macrophages.
【 授权许可】
2012 Joung et al.; licensee BioMed Central Ltd.
【 预 览 】
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