| 2 | Protective Effect of Brassica napus L.Hydrosols against Inflammation Response in RAW 264.7 Cells显示文摘Objective:To demonstrate the anti-inflammatory activity of Brassica napus L.hydrosols(BNH)in lipopolysaccharide(LPS)-stimulated RAW 264.7 cells.Methods:Composition analysis of BNH was conducted via gas chromatography-mass spectrometry after BNH were extracted.The nitric oxide(NO)production was measured using the Griess assay.Prostaglandin E2(PGE2)production was evaluated with enzyme-linked immunosorbent assay.The effects of BNH on LPS-induced pro-inflammatory enzymes including inducible nitric oxide synthase(iNOS)and cyclooxygenase-2(COX-2)were evaluated using Western blot analysis.Furthermore,phosphorylation of nuclear factor-kappa B(N F-k B)and nuclear translocation of N F-k B p65 were evaluated with Western blot analysis and immunofluorescence staining,respectively.Results:Compared with LPS-stimulated cells,BNH markedly decreased the generation of NO and PGE_(2)in LPS-stimulated RAW 264.7 cells(P<0.01 or P<0.05).Moreover,BNH inhibited protein levels of iNOS and COX-2(P<0.01).Phosphorylation of NF-k B and nuclear translocation of NF-k B p65 was significantly inhibited by BNH(P<0.01 or P<0.05).Conclusion:The anti-inflammatory activities of BNH were mediated via blockage of the N F-k B signaling pathways in LPS-stimulated RAW 264.7 cells. | Su-Hyeon Cho Song Rae Kim Myeong Seon Jeong Miri Choi SeonJu Park Kil-Nam Kim | 2021 | Chinese Journal of Integrative Medicine2021，27，4： | 0 |
| 3 | Dieckol isolated from Eisenia bicyclis extract suppresses RANKL-induced osteoclastogenesis in murine RAW 264.7 cells显示文摘Objective:To demonstrate the effect of dieckol from Eisenia bicyclis on osteoclastogenesis using RAW 264.7 cells.Methods:Murine macrophage RAW 264.7 cells were subjected to dieckol treatment,followed by treatment with receptor activator of nuclear factor kappa-B ligand(RANKL)to induce osteoclastogenesis.Tartrate-resistant acid phosphatase(TRAP)activity was examined using a TRAP activity kit.Western blotting analysis was conducted to examine the level of osteoclast-related factors,including TRAP and calcitonin receptor(CTR),transcriptional factors,including c-Fos,c-Jun,and nuclear factor of activated T cells cytoplasmic 1(NFATc1),nuclear factor kappa-B(NF-κB),extracellular signal-regulated kinase(ERK),and c-Jun N-terminal kinase(JNK).Immunofluorescence staining was conducted to examine the expression of c-Fos,c-Jun,and NFATc1.Results:Among the four phlorotannin compounds present in Eisenia bicyclis,dieckol significantly hindered osteoclast differentiation and expression of RANKL-induced TRAP and CTR.In addition,dieckol downregulated the expression levels of c-Fos,c-Jun,NFATc1,ERK,and JNK,and suppressed NF-κB signaling.Conclusions:Dieckol can suppress RANKL-induced osteoclastogenesis.Therefore,it has therapeutic potential in treating osteoclastogenesis-associated diseases. | Su-Hyeon Cho Tae-Hyung Kwon Hoibin Jeong Jin Sook Kim Song-Rae Kim Myeong Seon Jeong SeonJu Park Miri Choi Jung-Hee Woo Juhee Ahn Kil-Nam Kim | 2022 | Asian Pacific Journal of Tropical Biomedicine2022，12，6： | 0 |
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