Abstract
A study on the anti-inflammatory activity of brown alga Sargassum siliquastrum led to the isolation of sargachromanol G (SG). In this study, the anti-inflammatory effect and the action mechanism of SG have been investigated in murine macrophage cell line RAW 264.7. SG dosedependently inhibited the production of inflammatory markers [nitric oxide (NO), inducible nitric oxide synthase (iNOS), prostaglandin E2 (PGE2), and cyclooxygenase-2 (COX-2)] and pro-inflammatory cytokines [tumor necrosis factor-α (TNF-α), interleukin (IL)-1β, and IL-6] induced by LPS treatment. To further elucidate the mechanism of this inhibitory effect of SG, we studied LPSinduced nuclear factor-κB (NF-κB) activation and mitogen-activated protein kinases (MAPKs) phosphorylation. SG inhibited the phosphorylation IκB-α and NF-κB (p65 and p50) and MAPK (ERK1/2, JNK, and p38) in a dose dependent manner. These results suggest that the anti-inflammatory activity of SG results from its modulation of pro-inflammatory cytokines and mediators via the suppression of NF-κB activation and MAPK phosphorylation.
Original language | English (US) |
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Pages (from-to) | 1421-1430 |
Number of pages | 10 |
Journal | Archives of Pharmacal Research |
Volume | 35 |
Issue number | 8 |
DOIs | |
State | Published - Aug 2012 |
Bibliographical note
Funding Information:This work was supported by the National Research Foundation of Korea Grant funded by the Korean Government (MEST) (NRF-C1-2011-0021039)
Keywords
- Inflammatory markers
- MAPK
- NF-κB
- Pro-inflammatory cytokines
- Sargachromanol G
- Sargassum siliquastrum