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Fruits extracts of Hovenia dulcis Thunb.suppresses lipopolysaccharide—stimulated inflammatory responses through nuclear factor—kappaB pathway in Raw 264.7 cells 被引量:8
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作者 Ju-Yeon Park Jin-Young Moon +3 位作者 Sun-Dong Park Won-Hwan Park Hyuck kim jai-eun kim 《Asian Pacific Journal of Tropical Medicine》 SCIE CAS 2016年第4期349-355,共7页
Objective:To investigate the anti-inflammatory effects and the action mechanism of the fruits of Horenia dulcis(H.dulcis) in lipopolysaccharide(LPS)-induced mouse macrophage Raw 264.7cells.Methods:The extract of H.dul... Objective:To investigate the anti-inflammatory effects and the action mechanism of the fruits of Horenia dulcis(H.dulcis) in lipopolysaccharide(LPS)-induced mouse macrophage Raw 264.7cells.Methods:The extract of H.dulcis fruits(EHDF) were extracted with 70%ethanol.Mouse macrophages were treated with different concentrations of EHDF in the presence and absence of LPS(1 μg/mL).To demonstrate the inflammatory mediators including nitric oxide,inducible nitric oxide synthase and cyclooxygenase(COX)-2 expression levels were analyzed by usingin vitro assay systems.COX-derived pro-inflammatory cytokines including interleukin-1 β.tumor necrosis factor- α and prostaglandin F_2 were determined using ELISA kits.Cell viability,heme oxygenase-1 expression,nuclear factor-kappaB and nuclear factor F.2-related factors 2 translocation were also investigated.Results:EHDF potently inhibited the LPS-stimulated nitric oxide,inducible nitric oxide synthase.COX-2,interleukin-1 β and tumor necrosis factor- α expression in a dose-dependent manner.EHDF suppressed the phosphorylation of inhibited kappaB-alpha and p65 nuclear translocation.Treatment of macrophage cells with EHDF alone induced the heme oxygenase-1 and nuclear translocation of nuclear factor E2-reIated factor 2.Conclusions:These results suggest that the ethanol extract of H.dulcis fruit exerts its anti-inflammatory effects by inhibiting inhibited kappaBalpha phorylation and nuclear translocation of nuclear factor-kappaB. 展开更多
关键词 FRUITS of Hovenia dulcis Inflammation MACROPHAGE Nuclear factor-kappaB HEME oxygenase-1
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Ethanol Extract of Lycopodium serratum Thunb. Attenuates Lipopolysaccharide-Induced C6 Glioma Cells Migration via Matrix Metalloproteinase-9 Expression 被引量:1
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作者 Ju-Yeon Park Hyuck kim +3 位作者 Dong-Woo Lim jai-eun kim Won-Hwan Park Sun-Dong Park 《Chinese Journal of Integrative Medicine》 SCIE CAS CSCD 2018年第11期860-866,共7页
Objectives: To elucidate how ethanol extract of L. serratum(ELS) could exert anti-migratory effects on glioma with the suppression of nuclear factor kappa B(NF-κB) downstream pathway. Methods: Cell viability of... Objectives: To elucidate how ethanol extract of L. serratum(ELS) could exert anti-migratory effects on glioma with the suppression of nuclear factor kappa B(NF-κB) downstream pathway. Methods: Cell viability of ELS on C6 glioma was detected by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide(MTT) assay. Nitric oxide(NO) assay and 2',7'-dichlorofluorescin diacetate(DCFH-DA) assay were applied to measure NO production and reactive oxygen species(ROS) generation on lipopolysaccharide(LPS)-induced C6 glioma cells. NF-κB, mitogen-activated protein kinase(MAPK), inducible nictric oxide synthase(i NOS) and cyclooxygenase-2(COX-2) protein were determined by Western blot. Wound healing assay was used to investigate the inhibitory effect of ELS on fetal bovine serum(FBS)-induced migration and matrix metalloproteinase(MMP)-9 and-2 activity was examined by zymography. Results: ELS suppressed LPS-induced phosphorylation of extracellular signal-regulated kinase(ERK), c-Jun N-terminal kinase(JNK), and p38 through inhibiting the expression of chemokine CCL2(or monocyte chemoattractant protein-1, MCP-1). In addition, ELS inhibited the expression of i NOS, COX-2, and the production of NO by LPS in C6 glioma cells. ELS also significantly decreased serum-induced migration of C6 glioma cells in scratch wound healing in a dose-dependent manner(P〈0.01). The activity of MMP-9 and-2 were also significantly attenuated by ELS with LPS treatment(P〈0.01). Conclusion: Our results suggest that downregulation of MMP-9 gene expression might be involved in the anti-migration effect of ELS against LPS-induced C6 glioma cells. 展开更多
关键词 Lycopodium serratum Thunb LIPOPOLYSACCHARIDE matrix metalloproteinase MIGRATION C6 glioma cell
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