Eun-Ji Joung

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OBJECTIVE Microglial activation has been implicated in many neurological disorders for its inflammatory and neurotrophic effects. In this study, we investigated the pharmaceutical properties of 6,6'-bieckol on the regulation of nuclear factor-κB (NF-κB) activation responsible to the expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase(More)
BACKGROUND Excessive pro-inflammatory cytokine production from activated microglia contributes to neurodegenerative diseases, thus, microglial inactivation may delay the progress of neurodegeneration by attenuating the neuroinflammation. Among 5 selected brown algae, we found the highest antioxidant and anti-neuroinflammatory activities from Myagropsis(More)
Myagropsis myagroides has been used as a Chinese medicine and its extract has shown various biological activities, however, its anti-inflammatory mechanism remains unknown. In this study, we investigated the inhibitory effects of the ethyl acetate fraction of M. myagroides (EFM) on the production of inflammatory mediators and pro-inflammatory cytokines in(More)
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),(More)
Sargaquinoic acid (SQA) has been known for its antioxidant and anti-inflammatory properties. This study investigated the effects of SQA isolated from Sargassum serratifolium on the inhibition of tumor necrosis factor (TNF)-α-induced monocyte adhesion to human umbilical vein endothelial cells (HUVECs). SQA decreased the expression of cell adhesion molecules(More)
Sargassum, a genus of brown algae (Phaeophyceae) in the Sargassaceae family, comprises approximately 400 species in the world. Among them, Sargassum serratifolium has been reported to have high level of meroterpenoids, which have antioxidant, anti-inflammatory, and neuroprotective activities. This study investigated the anti-inflammatory mechanism of(More)
Myagropsis myagroides, a brown alga, showed strong anti-inflammatory activities in the previous studies. In this study, we isolated a strong anti-inflammatory compound, sargaquinoic acid (SQA), from M. myagroides and investigated the anti-inflammatory action using lipopolysaccharide (LPS)-stimulated RAW 264.7 cells. SQA suppressed the production of(More)
Vascular inflammation is a key factor in the pathogenesis of atherosclerosis. The purpose of this study was to investigate the protective effects of sargachromenol (SCM) against tumor necrosis factor (TNF)-α-induced vascular inflammation. SCM decreased the expression of cell adhesion molecules, including intracellular adhesion molecule-1 and vascular cell(More)
Sargassum serratifolium was found to contain high concentrations of meroterpenoids, having strong antioxidant, anti-inflammatory, and neuroprotective activities. This study aims to investigate the anti-inflammatory mechanisms of an ethanolic extract of S. serratifolium (ESS) using lipopolysaccharide (LPS)-stimulated BV2 microglial cells and to identify the(More)
Hyperpigmentation is an increased deposition of melanin in the skin. The effects of ethanolic extract from the brown alga Sargassum serratifolium (ESS) on melanogenic protein expressions in B16F10 mouse melanoma cells were examined to elucidate its hypopigmenting properties. ESS remarkably reduced melanin synthesis in α-melanocyte stimulating hormone(More)