Kwak, Chung Shil;Son, Dahee;Chung, Young-Shin;Kwon, Young Hye
Nutrition Research and Practice
/
v.9
no.6
/
pp.569-578
/
2015
BACKGROUND/OBJECTIVES: Fermentation can increase functional compounds in fermented soybean products, thereby improving antioxidant and/or anti-inflammatory activities. We investigated the changes in the contents of phenolics and isoflavones, antioxidant activity and anti-inflammatory activity of Doenjang during fermentation and aging. MATERIALS/METHODS: Doenjang was made by inoculating Aspergillus oryzae and Bacillus licheniformis in soybeans, fermenting and aging for 1, 3, 6, 8, and 12 months (D1, D3, D6, D8, and D12). Doenjang was extracted using ethanol, and sequentially fractioned by hexane, dichloromethane (DM), ethylacetate (EA), n-butanol, and water. The contents of total phenolics, flavonoids and isoflavones, 2,2-diphenyl-1 picryl hydrazyl (DPPH) radical scavenging activity, and ferric reducing antioxidant power (FRAP) were measured. Anti-inflammatory effects in terms of nitric oxide (NO), prostaglandin (PG) E2 and pro-inflammatory cytokine production and inducible nitric oxide synthase (iNOS) and cyclooxygenase (COX)-2 expressions were also measured using LPS-treated RAW 264.7 macrophages. RESULTS: Total phenolic and flavonoid contents showed a gradual increase during fermentation and 6 months of aging and were sustained thereafter. DPPH radical scavenging activity and FRAP were increased by fermentation. FRAP was further increased by aging, but DPPH radical scavenging activity was not. Total isoflavone and glycoside contents decreased during fermentation and the aging process, while aglycone content and its proportion increased up to 3 or 6 months of aging and then showed a slow decrease. DM and EA fractions of Doenjang showed much higher total phenolic and flavonoid contents, and DPPH radical scavenging activity than the others. At $100{\mu}g/mL$, DM and EA fractions of D12 showed strongly suppressed NO production to 55.6% and 52.5% of control, respectively, and PGE2 production to 25.0% and 28.3% of control with inhibition of iNOS or COX-2 protein expression in macrophages. CONCLUSIONS: Twelve month-aged Doenjang has potent antioxidant and anti-inflammatory activities with high levels of phenolics and isoflavone aglycones, and can be used as a beneficial food for human health.
Lee, Kang Pa;Sudjarwo, Giftania Wardani;Kim, Ji-Su;Dirgantara, Septrianto;Maeng, Won Jai;Hong, Heeok
Nutrition Research and Practice
/
v.8
no.3
/
pp.267-271
/
2014
BACKGROUND/OBJECTIVES: Overproduction of nitric oxide (NO) by the inducible nitric oxide synthase (iNOS) enzyme can cause inflammation. Cyclooxygenase-2 (COX-2) is also involved in the inflammatory response through regulation of nuclear factor-kappa B $NF-{\kappa}B$(). Areca catechu is one of the known fruit plants of the Palmaceae family. It has been used for a long time as a source of herbal medicine in Indonesia. In this study, we explored the effect of Indonesian Areca catechu leaf ethanol extract (ACE) in lipopolysaccharide (LPS)-induced inflammation and carrageenan-induced paw edema models. Recently, this natural extract has been in the spotlight because of its efficacy and limited or no toxic side effects. However, the mechanism underlying its anti-inflammatory effect remains to be elucidated. MATERIALS/METHODS: We measured NO production by using the Griess reagent, and determined the expression levels of inflammation-related proteins, such as iNOS, COX2, and $NF-{\kappa}B$, by western blot. To confirm the effect of ACE in vivo, we used the carrageenan-induced paw edema model. RESULTS: Compared to untreated cells, LPS-stimulated RAW 264.7 cells treated with ACE showed reduced NO generation and reduced iNOS and COX-2 expression. We found that the acute inflammatory response was significantly reduced by ACE in the carrageenan-induced paw edema model. CONCLUSION: Taken together, these results suggest that ACE can inhibit inflammation and modulate NO generation via downregulation of iNOS levels and $NF-{\kappa}B$ signaling in vitro and in vivo. ACE may have a potential medical benefit as an anti-inflammation agent.
Kim, Bowoon;Kim, Jae-Il;Kim, Hyeung-Rak;Byun, Dae-Seok
Korean Journal of Fisheries and Aquatic Sciences
/
v.47
no.5
/
pp.527-536
/
2014
An ethanolic extract from Myagropsis yendoi was fractionated using several solvents. Among these, an ethyl acetate fraction (Myagropsis yendoi ethyl acetate fraction: MYE) showed the highest anti-inflammatory activity based on inhibition of lipopolysaccharides (LPS)-induced nitric oxide (NO) production in RAW 264.7 cells. We thus investigated the molecular mechanisms underlying MYE's inhibitory effects. Pretreatment of cells with up to $30{\mu}g/mL$ of MYE significantly inhibited NO production and inducible nitric oxide synthase expression in a dose-dependent manner (P<0.05). Similarly, MYE markedly reduced the production of pro-inflammatory cytokines, such as interleukin (IL)-$1{\beta}$, IL-6, and tumor necrosis factor (TNF)-${\alpha}$, as well as their mRNA levels. While the nuclear translocation of nuclear factor-kappa B (NF-${\kappa}B$) was strongly suppressed by MYE, the activation of a nuclear factor erythroid 2-related factor (Nrf2) was increased. Moreover, MYE significantly reduced the phosphorylation of JNK, p38 MAPK, and phosphatidylinositol 3-kinase/Akt in LPS-stimulated cells. These results indicate that MYE contains anti-inflammatory compounds, and that it might be used as a dietary supplement for the prevention of inflammatory diseases.
An ethanolic extract of Undaria pinnatifida was fractionated using several solvents. Of the fractions, the ethyl acetate fraction had the greatest inhibitory effect on lipopolysaccharide (LPS)-induced nitric oxide (NO) production in RAW 264.7 macrophage cells. Using this fraction (U. pinnatifida ethyl acetate extract, UPE), we investigated the molecular mechanism underlying its inhibitory effect on LPS-stimulated RAW 264.7 cells. Pretreatment of the cells with up to $100{\mu}g/mL$ UPE significantly inhibited NO production and inducible nitric oxide synthase (iNOS) expression, in a dose-dependent manner. Similarly, UPE treatment markedly reduced the production of pro-inflammatory cytokines, such as interleukin (IL)-1, IL-6 and tumor necrosis factor-${\alpha}$ (TNF-${\alpha}$), while it strongly suppressed the nuclear translocation of nuclear factor-kappa B (NF-${\kappa}B$) by preventing proteolytic degradation of inhibitor of nuclear factor ${\kappa}B$$(I{\kappa}B)-{\alpha}$. Moreover, UPE treatment significantly reduced the phosphorylation of phosphatidylinositol 3-kinase (PI3K)/Akt and mitogen-activated protein kinase (MAPK) in LPS-stimulated cells. These results indicate that UPE contains anti-inflammatory compounds and suggest that it might be used as a functional food material that assists in prevention of inflammatory diseases.
[ ${\beta}ig-h3$ ] is a secretory protein that is induced by $TGF-{\beta}$ and implicated in various disease conditions including fibrosis. We have previously reported that ${\beta}ig-h3$ expression is implicated in astrocyte response to brain injury. In this study, we further investigated potential roles of ${\beta}ig-h3$ protein in the injured central nervous system (CNS). We specifically assessed whether the treatment of microglial cells with ${\beta}ig-h3$ can regulate microglial activity. Microglial cells are the prime effector cells in CNS immune and inflammatory responses. When activated, they produce a number of inflammatory mediators, which can promote neuronal injury. We prepared conditioned medium from the stable CHO cell line transfected with human ${\beta}ig-h3$ cDNA. We then examined the effects of the conditioned medium on the LPS- or $IFN-{\gamma}-mediated$ induction of proinflammatory molecules in microglial cells. Preincubation with the conditioned medium significantly attenuated LPS-mediated upregulation of $TNF-{\alpha},\;IL-1{\beta}$, iNOS and COX-2 mRNA expression in BV2 murine microglial cells. It also reduced $IFN-{\gamma}-mediated$ upregulation of $TNF-{\alpha}$ and COX-2 mRNA expression but not iNOS mRNA expression. Assays of nitric oxide release correlated with the mRNA data, which showed selective inhibition of LPS-mediated nitric oxide production. Although the regulatory mechanisms need to be further investigated, these results suggest that astrocyte-derived ${\beta}ig-h3$ may contribute to protection of the CNS from immune-mediated damage via controlling microglial inflammatory responses.
Choi, Eun Yeong;Heo, Seong Il;Kwon, Yong Soo;Kim, Myong Jo
Korean Journal of Medicinal Crop Science
/
v.24
no.1
/
pp.31-37
/
2016
Background : We studied the anti-oxidant activity and anti-inflammatory effects of Spiraea fritschiana Schneid extract (SFSE). Methods and Results : The SFSE was prepared using methanol and was evaluated for its total phenol and flavonoid content, DPPH (1,1-diphenyl-2-picrylhydrazyl) free-radical scavenging activity, reducing power, and effect on nitric oxide (NO) production, and cell viability by using real-time polymerase chain reaction (PCR). The total phenol content was $212.78{\mu}g{\cdot}galli$c acid equivalent (GAE)/mg and the total flavonoid content was $66.84{\mu}g{\cdot}quercetin$ equivalent (QE)/mg. The extract showed antioxidant activity (DPPH free-radical scavenging activity) with $RC_{50}$ value of $76.61{\mu}g/m{\ell}$. The reducing power of the extract was Abs 0.58 at $250{\mu}g/m{\ell}$. Cell viability was determined using the MTT 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. To evaluate anti-inflammatory activity, we examined the inhibitory effects on lipopolysaccharide-(LPS)-induced NO production in RAW 264.7 cells. The NO inhibition rate was 90% at $200{\mu}g/m{\ell}$ SFSE. At the same concentration, the expression of pro-inflammatory genes such as inducible nitric oxide synthase (iNOS) and cyclooxygenase (COX)-2 also decreased. Conclusions : Our results suggest that SFSE is a novel resource for the development of foods and drugs that possess anti-oxidant and anti-inflammatory activity.
Objectives : The aim of this study was to authenticate whether fractionated extract of Rumex japonicus HOUTT. (RJ) has anti-inflammatory effects in mouse macrophage, RAW264.7 cells. Methods : Roots of RJ were extracted by methanol for 48hours. The methanol that gained was filtered and freeze dried. The methanol extract was dissolved in water and dichloromethane (DCM). After that, two layers were separated. Ethyl acetate (EA) added to the water layer and separated again. All the layers were filtered and freeze dried and the extracts were tested. Cytotoxic activity of extracts on RAW 264.7 cells was measured using MTS assay. The nitric oxide (NO) production was measured and proinflammatory cytokines and $PGE_2$ were measured by ELISA kit. The levels of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), I ${\kappa}$-B-${\alpha}$ and nuclear NF-${\kappa}B$ p65 expression were detected by western blot. Results : Our results indicated that DCM and EA extracts of RJ inhibited the LPS-induced NO, $PGE_2$ production and iNOS, COX-2 expression accompanied by an attenuation of TNF-${\alpha}$, IL-$1{\beta}$ and IL-6 production in RAW 264.7 cells most effectively. DCM and EA extracts also had suppression effects of LPS-induced NF-${\kappa}B$ and MAPKs activation. Conclusions : This results demonstrate that fractionated extract of RJ has anti-inflammatory effects and among the fractioned extract, dichloromethane and ethyl acetate extract have best anti-inflammatory effects.
Objectives This study was carried out to find out the Antioxidant and Anti-inflammatory Effects of Components of Mahwangbujaseshin-tang in LPS-Stimulated RAW264.7 Macrophages. Methods There are 5 experimental groups. ; normal, control, EH (Ephedrae Herba), ALRP (Aconiti Lateralis Radix Preparata) and AR (Asiasari Radix). The extract of EH, ALRP and AR ($100{\mu}g/ml$) was added to each group. We examined cytotoxicity, total phenolic contents, DPPH and ABTS free radical scavenging activity, Intracellular ROS (reactive oxygen species) production, NO (Total Nitric oxide), iNOS (inducible nitric oxide synthase), PGE2 (prostaglandin E2), COX-2 (cyclooxygenase-2), $IL-1{\beta}$ ($interleukin-1{\beta}$), IL-6 (interleukin-6), $TNF-{\alpha}$ (tumor necrosis factor-${\alpha}$), MMP-9 (matrix metalloproteinase-9), TIMP-1 (tissue inhibitor of metalloproteinase-1) and HO-1 (heme oxygenase-1) expression level. Results 1. Total phenolic contents of EH were in the highest level. 2. DPPH and ABTS free radical scavenging activity of EH was in the highest level. 3. ROS production was significantly decreased in AR. 4. NO production was significantly decreased in EH, ALRP, AR and iNOS expression was decreased in EH, AR. 5. PGE2 and COX-2 expression was decreased in EH, AR. 6. $IL-1{\beta}$ production was significantly decreased in EH, AR and IL-6 production was significantly decreased in AR. $TNF-{\alpha}$ production was significantly decreased in ALRP, AR. 7. MMP-9 and TIMP-1 production were significantly decreased in EH. 8. HO-1 expression was significantly increased in EH. 9. With simultaneous usage of SnPP which is expression inhibitor of HO-1, NO, $IL-1{\beta}$, IL-6 and $TNF-{\alpha}$ production were partially increased in EH, ALRP, AR. Conclusions According to this study, Components of Mahwangbujaseshin-tang have anti-oxidants and anti-inflammation effects in LPS-Stimulated RAW264.7 Macrophages.
An, Jeong Hwan;Kim, In Keun;Kim, Taek Sang;Kwak, Hyun Jeong;Rhew, Hyun Yul;Chung, Hun-Taeg
IMMUNE NETWORK
/
v.4
no.2
/
pp.108-115
/
2004
Background: Production of nitric oxide (NO) by inducible NO synthase (iNOS) has been implicated in the pathology of autoimmune disease. It is unknown whether iNOS expression is increased within testes and whether iNOS and NO have essential roles in the pathogenesis of EAO. Methods: EAO was induced in guinea pig testes at 17 days after secondary immunization by administration of crude extract (CE) and purified glycoprotein 1 (GP1) from normal guinea pig testes. iNOS gene expression was assessed by RT-PCR and Northern blot analysis in testes. Localization of iNOS and Mac-1 and the indicator of NO-mediated tissue injury, nitrotyrosine, were detected in the testicular lesion by immunohistochemistry. Results: In control testes, inflammation and iNOS gene expression were not detected, whereas, in CE- and GP1-injected testes, inflammation and marked iNOS gene expression were evident at day 17 after secondary immunization. Immunohistochemistry of Mac-1 showed the colocalization with iNOS protein and nitrotyrosyl proteins in intertubules, suggesting that NO produced by infiltrated macrophages may be involved in inflammatory lesions of intertubules. Intraperitoneal administration of aminoguanidine significantly prevented EAO with reduction of inflammation, iNOS expression and nitrotyrosine formation. Conclusion: These results suggest that NO production by macrophages may be important in the pathogenesis of CE- and GP1-induced EAO. Furthermore, this study demonstrated the therapeutic potential of iNOS inhibitor in the treatment of inflammatory and autoimmune mediated-diseases.
Park, Sang-Mi;Byun, Sung-Hui;Kim, Young-Woo;Cho, Il-Je;Kim, Sang-Chan
The Korea Journal of Herbology
/
v.27
no.3
/
pp.31-38
/
2012
Objectives : Mori Folium is one of the traditional medicinal herb. It was commonly used for sericulture in the world and has been traditionally administered as natural therapeutic agent for the treatment of filariasis, diabetes and dropsy in East Asia. This study investigated an anti-inflammatory potential of Mori Folium ethanol extract (MFE). Methods : We examined the effects of MFE on the lipopolysaccharide (LPS)-induced production of nitric oxide (NO) and prostaglandin $E_2$ ($PGE_2$) in a murine macrophage cell line, RAW 264.7. Results : MFE inhibited production of NO and $PGE_2$ in a dose dependent manner and also decreased the expression of inducible nitric oxide synthase (iNOS), cyclooxygenase-2, interleukin (IL)-1, IL-6 and tumor necrosis factor-${\alpha}$. As a plausible molecular mechanism, increased degradation of I-${\kappa}B{\alpha}$ and phosphorylation of I-${\kappa}B{\alpha}$, NF-${\kappa}B$ and MAP kinases by LPS were partly blocked by MFE treatment. Conclusions : These results suggest that MFE has an anti-inflammatory therapeutic potential, which may result from inhibition of NF-${\kappa}B$ activation and MAPK phosphorylation, thereby decreasing the expression of pro-inflammatory genes.
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