Effects of the extracts from bran part of the pigmented rices on inflammation was evaluated by determining their inhibitory action on the production of nitric oxides, histamines and matrix metalloproteinase(MMP) from inflammatory leukocytes. Effects on the production of nitric oxides in a macrophage cell line, RAW264.7 cells, were determined, demonstrating that any significant difference was not detected between the normal rice and the pigmented rice extracts. Inhibitory effects on the histamine-release from a basophilic cell line, RBL-2H3, were examined, showing 3.6 to 5.4-fold increase in the inhibitory activity compared to that of the normal rices. Among the pigmented rice cultivars tested, especially, inhibitory activity of LK1-3-6-12-1-1 was the greatest. Using RAW264.7 cells, we examined the effect of the pigmented rice extracts on the MMP activity. The results showed that the enzyme activity increased with the increasing concentration of the normal rice extract. However, the pigmented rice extracts, except LK1A-2-12-1-l, acted to decrease the MMP activity with their increasing concentrations. The results described above showed the superiority of the pigmented rice extracts in inhibition on release of histamine and MMP, pivotal factors for causing inflammatory responses, from the leukocytes.
Journal of Physiology & Pathology in Korean Medicine
/
v.20
no.4
/
pp.1044-1050
/
2006
The Korean genuine medicine, 'Gigukjihwangtanggami (GJT)' has long been used clinically for hypertension and various cerebrovascular diseases. However, experimental study has been carried out very little. Recently cytokines involved in the regulation of inflammatory reactions and immune responses may play an important role in the pathogenesis of cerebral infarction (CI). The aim of this study is to investigate the effect of GJT on the production of pro-inflammatory cytokines and anti-inflammatory cytokines in peripheral blood mononuclear cells (PBMCS) stimulated with lipopolysaccaride (LPS) from Cl patients. The amount of tumor necrosis $factor-{\alpha}\;(TNF-{\alpha}),\;interleukin-1{\beta}\;(IL-1{\beta})$, IL-6, IL-8, IL-4 and IL-10 in PBMC culture supernatant was significantly increased in the LPS treated cells compared to unstimulated cells. GJT inhibited the production of $TNF-{\alpha},\;IL-1{\beta}$, IL-6 and IL-8 induced by LPS. The maximal inhibition rate of the $TNF-{\alpha},\;IL-1{\beta}$, IL-6 and IL-8 production by pretreatment of GJT (1 mg/ml) was $57.32{\pm}2.5%$ (p.0.05), $42.02{\pm}3.5%$ (p.0.05), $40.02{\pm}2.3%$ (p.0.05) and $48.02{\pm}3.1$, (p.0.05), respectively. In the Other hand, GJT increased the production of IL-4 and IL-10. The maximal increase rate of the IL-4 and IL-10 production by pretreatment of GJT (1 mg/ml) was $42.4{\pm}3.3%$ (p.0.05) End $56.4{\pm}2.9%$ (p.0.05), respectively. Taken together, these results indicate that GJT Ray have regulatory effects on the cytokine production and suggest that GJT might use clinically for the treatment of CI.
Journal of the Society of Cosmetic Scientists of Korea
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v.41
no.1
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pp.45-55
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2015
Ultraviolet B (UVB) irradiation induces both production of reactive oxygen species (ROS) and glucocorticoids (GCs)-mediated stress responses such as an increase of $11{\beta}$-hydroxysteroid dehydrogenase type 1 ($11{\beta}$-HSD1) activity in skin. In addition, ROS-induced inflammatory mediators and proinflammatory cytokines trigger skin inflammation. In this study, as $11{\beta}$-HSD1 inhibitor recovered a decrease of catalase expression, we investigated whether Trapa japonica (TJ) extract and its fractions could inhibit $11{\beta}$-HSD1/ROS-induced skin inflammation in HaCaT keratinocytes. TJ extract and its fractions inhibited expressions of $11{\beta}$-HSD1 as well as the increase of ROS in UVB-exposed HaCaT keratinocytes. Moreover, proinflammatory cytokines such as interleukin (IL)- ${\alpha}$, - ${\beta}$ and tumor necrosis factor (TNF)-${\alpha}$, and cyclooxygenase (COX)-2 and inducible NO synthase (iNOS) as inflammatory mediators were also inhibited in both mRNA and protein levels. Finally, prostaglandin $E_2$ ($PGE_2$) produced by COX-2 was inhibited effectively by TJ extract and its fractions. Taken together, these results suggest that TJ extract could be a potential anti-inflammatory ingredient to inhibit UVB-induced inflammation in skin.
There have been no published studies concerning the anti-inflammatory effects of corn silk on colon cancer cells. Thus, this study was conducted to investigate the effect of corn silk extract containing high levels of maysin on inflammation and its mechanism of action in colon cancer cells. SW 480 human colon cancer cells were treated with $1{\mu}g/mL$ of lipopolysaccharide (LPS) to induce inflammation, and next they were treated with different concentrations of corn silk extract (0, 5, 10 and $15{\mu}g/mL$). The concentrations of nitric oxide (NO) were determined. The mRNA expressions of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), tumor necrosis factor ${\alpha}$ ($TNF-{\alpha}$), interleukin-1beta ($IL-1{\beta}$) and interleukin-6 (IL-6), were determined. Western blot analysis was performed to determine the protein expressions of nuclear factor-kappa B ($NF-{\kappa}B$) and mitogen-activated protein kinases, and the latter consists of extracellular signal-related kinase (ERK), c-jun NH2-terminal kinase (JNK) and p38 MAP kinase (p38). The concentration of NO and the mRNA expression of iNOS were significantly and dose-dependently decreased in the corn silk-treated groups (P<0.05). The mRNA expression of $TNF-{\alpha}$, $IL-1{\beta}$ and IL-6 were significantly increased in the LPS-treated group (P<0.05), but these expressions were significantly and dose-dependently decreased in the corn silk treated groups (P<0.05). The protein expressions of $NF-{\kappa}B$ (in a dose-dependent fashion), ERK (at 10 and $15{\mu}g/mL$), JNK (at $15{\mu}g/mL$) and p38 (at 10 and $15{\mu}g/mL$) were significantly decreased with corn silk treatments (P<0.05). In conclusion, corn silk extract containing high levels of maysin seems to inhibit the LPS-induced inflammatory responses in SW480 colon cancer cells via the $NF-{\kappa}B$ pathway.
Roh, Kyung-Baeg;Shin, Seoungwoo;Yoon, Sohyun;Weon, Jin Bae;Oh, Se-young;Kim, Junoh;Park, Deokhoon;Jung, Eunsun
Journal of the Society of Cosmetic Scientists of Korea
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v.46
no.4
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pp.361-369
/
2020
Atopic dermatitis (AD) is a common and multifactorial inflammatory skin disease that is characterized by skin barrier dysfunction, inflammation, and chronic pruritus. AD has a complex etiology that includes genetic, immunological, and environmental factors that cause skin barrier abnormalities and immune dysfunctions. Sophora flavescens (SF) has been used in traditional Chinese medicine, but little research has been conducted on its anti-AD efficacy. In this study, we evaluated the effect of SF extract (SFE) on improving skin barrier function and immune abnormalities, which are the main symptoms of AD. SFE has the capacity to enhance the formation of cornified envelope (CE) that plays an important role in the skin barrier function. In addition, it was confirmed that SFE increased the expression of hyaluronic acid related to skin moisture. The effect of SFE against Staphylococcus aureus (S. aureus), which increases specifically in AD lesions, confirmed that SFE inhibited the production of pro-inflammatory cytokines induced by S. aureus. Furthermore, SFE was shown to inhibit the expression of pro-inflammatory cytokines induced by substance P (SP), the cause of skin neurogenic inflammation. These results demonstrate that SFE could be one of potential candidate agent for the treatment of AD by improving the skin barrier function and immune responses.
Kim, Soo-Jung;Park, Hye-Jeong;Shin, Hwa-Jeong;Kim, Ji-Soo;Ahn, Hee-Jin;Min, In-Soon;Youn, Hyung-Sun
Journal of Applied Biological Chemistry
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v.54
no.4
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pp.279-283
/
2011
Toll-like receptors (TLRs) play an important role in induction of innate immune responses. The activation of TLRs triggers inflammatory responses that are essential for host defense against invading pathogens. Phenethyl isothiocyanate (PEITC) extracted from cruciferous vegetables has an effect on anti-inflammatory therapy. Dysregulated activation of nuclear factor-${\kappa}$B (NF-${\kappa}$B), inducible nitric oxide synthase (iNOS), and cyclooxygenase-2 (COX-2) has been shown to play important roles in the development of certain inflammatory disease. To evaluate the therapeutic potential of PEITC, NF-${\kappa}$B activation and COX-2 and iNOS expression induced by lipopolysaccharide (LPS, TLR4 agonist), polyinosinic-polycytidylic acid (Poly[I:C], TLR3 agonist), 2 kDa macrophageactivating lipopeptide (MALP-2, TLR2 and TLR6 agonist) or oligodeoxynucleotide 1668 (ODN1668, TLR9 agonist) were examined. PEITC inhibits the activation of NF-${\kappa}$B induced by LPS or Poly[I:C] but not by MALP-2 or ODN1668. PEITC also suppressed the iNOS expression induced by LPS or Poly[I:C]. However, PEITC did not suppress COX-2 expression induced by LPS, Poly[I:C], MALP-2, or ODN1668. These results suggest that PEITC has the specific mechanism for antiinflammatory responses.
Macrophages are initiators for regulating a host's defenses to eliminate pathogens and trigger tissue repair. Macrophages are classified into two types: classically (M1) activated macrophages and alternatively (M2) activated macrophages. M1-phenotype macrophages directly or indirectly kill infectious organisms and tumor cells via pro-inflammatory responses, whereas M2-phenotype macrophages remodel wounded tissue through anti-inflammatory responses. In this paper, we investigated how Phellinus linteus hot water extract passed from Diaion HP-20 resin (PLEP) regulates polarization of M1-like or M2-like macrophages in human THP-1 cells. PLEP did not have cytotoxicity at a high concentration of 300 ㎍/ml. We observed morphological alteration of the THP-1 cells, which are stimulated by PLEP, LPS/INF-γ (M1 stimulators) or IL-4/IL13 (M2 stimulators). PLEP exposure induced morphology contiguous with LPS/INF-γ. qPCR was also performed to determine whether PLEP influences M1 or M2 polarization-related genes. M1-phenotype macrophage-specific genes, such as TNF-α, IL-1β, IL-6, IL-8, CXCL10 and CCR7, were enhanced by PLEP in a dose-dependent manner similar to LPS/INF-γ. Conversely, M2-phenotype-specific genes, such as MRC-1, DC-SIGN, CCL17 and CCL22, were suppressed by PLEP. PLEP also significantly up-regulated secretory inflammation cytokines related to M1 polarization of macrophages, including TNFα, IL-1β and IL-6, which was similar to the gene expression. Further, MAPK and NF-κB signaling were increased by treatment with PLEP, resulting in enhancement of cytokine secretion. PLEP might therefore be used as a promising booster of pro-inflammatory responses through M1 polarization of human THP-1 cells.
Journal of the Korean Society of Food Science and Nutrition
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v.42
no.10
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pp.1552-1559
/
2013
Rubus coreanus Miquel (RCM) has been used as one of the Korean traditional medicines for prostate health. In addition, recent studies have reported that RCM reduced chronic inflammatory diseases such as cancer, and rheumatoid arthritis. Therefore, in this study, we investigated the effects of unripe and ripe RCM on inflammationrelated gene expressions in LPS-stimulated mouse peritoneal macrophages. Mice were fed with 2% unripe RCM (U2), 10% unripe RCM (U10), 2% ripe RCM (R2), and 10% ripe RCM (R10) for 8 weeks. Peritoneal macrophages were isolated and stimulated with LPS then proinflammatory mediators (TNF-${\alpha}$, IL-$1{\beta}$, and IL-6), and prostaglandin E2 ($PGE_2$) productions were assessed. Moreover, gene expression profiles were analyzed by cDNA microarray method. Unripe and ripe RCM significantly reduced TNF-${\alpha}$ production but only unripe RCM decreased IL-$1{\beta}$ and IL-6 production. RCM intake significantly reduced inflammatory-related gene expressions such as arachidonate 5-lipoxygenase, interleukin 11, and nitric oxide synthase 2. Furthermore, unripe and ripe RCM significantly decreased ceruloplasmin, tissue plasminogen activator, thrombospondin 1, and vascular endothelial growth factor A expression which modulates symptoms of chronic inflammatory diseases. RCM intake also significantly increased hypoxia inducible factor 3, alpha which is the negative regulators of hypoxia-inducible gene expression. Furthermore, only unripe RCM reduced chemokine (C-C motif) ligand 8, chemokine (C-X-C motif) ligand 14, and phospholipase A2 expression. In this study, we showed that RCM had anti-inflammatory effects by suppression of pro-inflammatory mediator expressions and may reduce chronic inflammatory disease progress through regulation of gene expressions. These findings suggest that RCM might be used as a potential functional material to reduce chronic inflammatory responses.
Proanthocyanidins are naturally occurring polyphenolic compounds abundant in many vegetables, plant skins (rind/bark), seeds, flowers, fruits, and nuts. Numerous in vitro and in vivo studies have demonstrated myriad effects potentially beneficial to human health, such as antioxidation, immunomodulation, DNA repair, and antitumor activity. Among immune cells, macrophages are crucial players in a variety of inflammatory responses to environmental conditions. However, it has been widely reported that macrophages cause chronic inflammation and are involved in a variety of diseases, such as obesity, diabetes, metabolic syndrome, and cancer. In this study, we report the suppressive effect of proanthocyanidins via the heme oxygenase-1 (HO-1)-related system, on the immune response of the LPS-stimulated mouse macrophage cell line RAW264.7. Increased HO-1 expression at mRNA and protein levels were found in proanthocyanidins-treated RAW264.7 cells. Further, proanthocyanidins enhanced nuclear factor-erythroid 2-related factor 2 translocation into the nucleus. RAW264.7 cells were treated with lipopolysaccharide (LPS) with or without proanthocyanidins, and inflammatory mediator expression levels were assessed. Proanthocyanidins treatment resulted in the attenuation of nitric oxide production and inducible nitric oxide synthase expression in LPS-stimulated RAW264.7 cells. In addition, mRNA and protein expression of proinflammatory cytokines, such as tumor necrosis factor-${\alpha}$ and interleukin-6, was inhibited by proanthocyanidins treatment in LPS-stimulated RAW264.7 cells. These findings support proanthocyanidins as a promising anti-inflammatory agent.
Kwon, Da Hye;Choi, Eun Ok;Hwang, Hye-Jin;Kim, Kook Jin;Hong, Su Hyun;Lee, Dong Hee;Choi, Yung Hyun
Journal of Life Science
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v.28
no.2
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pp.207-215
/
2018
Inflammatory response and oxidative stress play critical roles in the development and progression of many human diseases. Therefore, a great deal of attention has been focused on finding functional materials that can control inflammation and oxidative stress simultaneously. The purpose of this study was to investigate the effects of Socheongja and Socheong 2, Korean black seed coat soybean varieties, on the inflammatory and oxidative stress induced by lipopolysaccharide (LPS) in RAW 264.7 macrophages. Our data indicated that the extracts of Socheongja (SCJ) and Socheong 2 (SC2) significantly suppressed LPS-induced production of nitrite oxide (NO) and prostaglandin $E_2$, key pro-inflammatory mediators, by suppressing the expression of inducible NO synthase and cyclooxygenase-2. It was also found that SCJ and SC2 reduced the LPS-induced secretion of pro-inflammatory cytokines, such as tumor necrosis $factor-{\alpha}$ and $interleukin-1{\beta}$, which was concomitant with a decrease in the protein levels. In addition, SCJ and SC2 markedly diminished LPS-stimulated intracellular reactive oxygen species accumulation, and effectively enhanced nuclear factor erythroid 2-related factor 2 (Nrf2) and heme oxygenase (HO)-1 expression. Furthermore, LPS-induced activation of mitogen-activated protein kinases (MAPKs) was abrogated by SCJ and SC2. Taken together, these data suggest that SCJ and SC2 may offer protective roles against LPS-induced inflammatory and oxidative responses in RAW 264.7 macrophages through attenuating MAPKs pathway, and these effects are mediated, at least in part, through activating Nrf2/HO-1 pathway. Given these results, we propose that SCJ and SC2 have therapeutic potential in the treatment of inflammatory and oxidative disorders caused by over-activation of macrophages.
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