• Title/Summary/Keyword: COX-2 inhibition

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The effects of Ohbaesangami (OBSGM) on the mucosa and skin diseases (오배산가미(五倍散加味)가 점막(粘膜) 및 피부질환(皮膚疾患)에 미치는 영향)

  • Roh, Seok-Sun;Hong, Seok-Hoon
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.20 no.2 s.33
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    • pp.10-35
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    • 2007
  • Objectives : To investigate the effects of Ohbaesangami (OBSGM) on mucosa and skin diseases, anti-microbial and anti-inflammatory tests were performed using several in vitro test models. Results : In anti-microbial test, OBSGM showed the slight inhibitory effect against Propionibacterium acnes (P. acnes) and Staphylococcus aureus (S. aureus). In anti-oxidant test, OBSGM showed the potent radical scavenging activity. In anti-inflammatory test, OBSGM weakly inhibited the lipopolysaccharide (LPS)-induced nitric oxide(NO) release from the RAW 264.7 macrophage cells. OBSGM also inhibited the LPS-induced $interleukin-1{\beta}(IL-1{\beta})$ and cyclooxygenase-2 (COX-2) expressions. The inhibitory effects of OBSGM on macrophage activation was via the inhibition of $NF-{\kappa}B$, evidenced by transient transfection assay. Furthermore, OBSGM markedly inhibited the activation of Jun-N-terminal kinase (JNK) and p38 MAP kinase in RAW 264.7 cells. In skin wrinkle formation assay, OBSGM strongly inhibited collagnease and elastase, whose activities are tightly related with the wrinkle formation. In addition, OBSGM inhibited the activities of MMP-1, MMP-2 on the mRNA levels in RAW 264.7 cells. However, OBSGM did not show an inhibitory potential on tyrosinase activity and melanin synthesis, indicating that it could not be applicable for skin whitening. Conclusion : These results suggest that the anti-inflammatory effect of OBSGM may be due to its inhibitory potentials on the macrophage activation. And, the anti-wrinkle effects of OBSGM may be due to its inhibitory potential on the collagnease and elastase activities. Therefore, OBSGM could be applicable for the treatment of mucosa and skin diseases.

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Luteolin 5-O-glucoside from Korean Milk Thistle, Cirsium maackii, Exhibits Anti-Inflammatory Activity via Activation of the Nrf2/HO-1 Pathway

  • Jung, Hyun Ah;Roy, Anupom;Abdul, Qudeer Ahmed;Kim, Hyeung Rak;Park, Hee Juhn;Choi, Jae Sue
    • Natural Product Sciences
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    • v.23 no.3
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    • pp.183-191
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    • 2017
  • Luteolin 5-O-glucoside is the major flavonoid from Korean thistle, Cirsium maackii. We previously reported the anti-inflammatory activities of luteolin 5-O-glucoside in lipopolysaccharide (LPS)-stimulated RAW 264.7 cells. In this study, we determined the anti-inflammatory mechanisms of luteolin 5-O-glucoside through the inhibition of nitric oxide (NO) production in vitro and in vivo. Results revealed that luteolin 5-O-glucoside dose-dependently inhibited NO production and expression of iNOS and COX-2 in LPS-induced RAW 264.7 cells. Luteolin 5-O-glucoside also significantly inhibited the translocation of $NF-{\kappa}B$, the activation of MAPKs, and ROS generation in LPS-induced RAW 264.7 cells. In addition, protein expressions of Nrf-2 and HO-1 were also upregulated by luteolin 5-O-glucoside treatment. Moreover, luteolin 5-O-glucoside inhibited ${\lambda}-carrageenan-induced$ mouse paw edema by 65.34% and 48.31% at doses of 50 and 100 mg/kg body weight, respectively. These findings indicate potential anti-inflammatory effect of luteolin 5-O-glucoside particularly by downregulating $NF-{\kappa}B$ and upregulating HO-1/Nrf-2 pathway.

Induction of Apoptosis by Vitamin E Succinate in Human Erythroleukemia K562 Cells (인간 만성백혈병 세포주에서의 Vitamin E Succinate에 의한 세포사멸 유도)

  • Jang, Chang-Deug;Kim, Jong-Myoung;An, Won-Geun;Park, Hye-Ryoun
    • Journal of Life Science
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    • v.17 no.7 s.87
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    • pp.896-904
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    • 2007
  • Regulation mechanism of apoptosis has been known to be important for understanding the pathogenesis of a number of human diseases including cancers. The effects of $RRR-{\alpha}-tocopheryl$ succinate(vitamin E succinate, VES) on the cell viability, generation of ROS, expression of proteins involved in apoptosis, and growth of human chronic myelogenous leukemia K562 cells were analyzed in this study. VES treatment not only induced the generation of the ROS but also increased the levels of $NF-{\kappa}B$, COX-2, and $p21^{WAF1/CIP1}$ in K562 cells. It modulates the levels of pro-apoptotic proteins such as Bax provoking the apoptosis in K562 cells. The cleavage of PARP into 89 kDa was also increased upon VES treatment in a dosage-dependent manner. Induction of an apoptosis was evident by the increase of sub-Gl peak and cell shrinkage condensed chromatin in K562 cells treated with VES. It also resulted in an inhibition of tumor growth by 50% and prolonged survival of the Iymphoma-induced mice. This potentiation of VES obtained in vitro and in vivo may indicate the feasibility of more effective chemotherapy in chronic myelogenous leukemia.

Inhibition of Inflammation by Kyeongok-go with Black ginseng in LPS-induced RAW 264.7 Macrophages (LPS로 염증유도된 RAW 264.74 세포에 대한 흑삼 첨가 경옥고의 항염증 효과)

  • Park, MyungJae;Kim, Jeong-Soo;Lee, AhReum;Roh, Seong-Soo;Kwon, OJun;Seo, Young-Bae
    • The Korea Journal of Herbology
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    • v.32 no.3
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    • pp.19-27
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    • 2017
  • Objectives : The aim of this study was to examine effect of anti-oxidant and anti-inflammation activity of the Kyeongok-go with various processing methods that was manufactured by heating mantle. Methods : Commercial Kyeongok-go (K0) was purchased and Kyeongok-go with ginseng (K1), Kyeongok-go with black ginseng (BK), ginseng fermentation Kyeongok-go (KF), black ginseng fermentation Kyeongok-go (BKF) were manufactured by heating mantle. To examine anti-oxidant effect, DPPH radical and production of NO and ROS in RAW 264.74 cell were used. Furthermore, to determined anti-inflammation effect, measured pro-inflammatory mRNA such as NOS-II, COX-2, $IL-1{\beta}$, IL-6, $TNF-{\alpha}$ in RAW 264.74 cell treated with K0, K1, KF, BK, and BKF. Result : K1 scavenged DPPH radical effectively than K0. The most DPPH radical scavenging activity was BKF. In the RAW 264.74 cells stimulated with LPS, NO and ROS production were measured. As a results, K1 was decreased NO, ROS production compared with K0, and BKF was reduced similarly to cyclosporine A (positive control). Expression of pro-inflammatory mRNA such as NOS-II, COX-2, $IL-1{\beta}$, IL-6 showed a significant decrease in BK or BKF. But, there was no significant in expression of $TNF-{\alpha}$ in all extract treatmetn groups. Conclusions : According to the above results, it is considered that Kyeongok-go with fermented black ginseng (BKF) manufactured by heating mantle is effective material that have anti-inflammation and anti-oxidant activities. Our finding indicate that BKF may be an effective agent for anti-inflammation through anti-oxidant effect.

Anti-inflammatory effects of the fermentation extracts consisting of soybean, red ginseng and Citrus Unshiu Peel (대두, 홍삼, 진피로 구성된 발효 추출물의 항염증 효능에 관한 연구)

  • Lee, Jong Rok;Kim, Young Woo;Byun, Sung Hui;Kim, Sang Chan;Park, Sook Jahr
    • The Korea Journal of Herbology
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    • v.30 no.5
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    • pp.59-65
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    • 2015
  • Objectives : Fermentation of herbs has been known to be helpful in improving the immune systems and protecting body against disease. The present study was conducted to evaluate anti-inflammatory effects of the fermentation extracts (FE) consisting of soybean, red ginseng andCitrus UnshiuPeel in lipopolysaccharide (LPS)-activated Raw264.7 cells.Methods : FE were prepared by the fermentation withBacillus Subtilisand then by extraction with ethanol (95%; prepared by the fermentation process). Cell viability was measured by MTT assay. Nitric oxide (NO) production was measured in culture media by Griess assay. The expression of nuclear factor (NF)-κB and inhibitory kappa B alpha (IκBα) was determined by Western blot.Results : LPS-induced production of NO and PGE2was dose-dependently decreased by the treatment of FE in Raw264.7 cells. These suppressive effects of FE on NO and PGE2production were related to the inhibition of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) expression. FE inhibited LPS-induced production of pro-inflammatory cytokines, TNF-α, IL-6, and IL-1βin a dose-dependent manner. Furthermore, FE inhibited the NF-κB signaling pathway through the prevention of LPS-induced degradation of IκBαin cytosol and the nuclear translocation of NF-κB.Conclusions : These findings suggest that FE could have anti-inflammatory effects on LPS-induced inflammatory responses in macrophages.

Anti-Oxidative and Anti-Inflammatory Activities of Seven Medicinal Herbs including Tetrapanax papyriferus and Piper longum Linne (통초, 필발을 포함한 7종 한약재 추출물의 항산화 및 항염증 활성)

  • Jin, Kyong-Suk;Oh, You Na;Lee, Ji Young;Son, Byung Yil;Choi, Woobong;Lee, Eun-Woo;Kwon, Hyun Ju;Kim, Byung Woo
    • Microbiology and Biotechnology Letters
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    • v.41 no.2
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    • pp.253-262
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    • 2013
  • In this study, we analyzed the anti-oxidative and anti-inflammatory activities of seven medicinal herbs. All extracts of the tested herbs, Euryale ferox Salisbury, Echinops setifer Iljin, Amomum cardamomum Linne, Tetrapanax papyriferus, Illicium verum Hook. f., Typha orientalis Presl, and Piper longum Linne, exhibited potent anti-oxidative activity as confirmed by DPPH radical scavenging capacity. Lipopolysaccharide (LPS) induced nitric oxide (NO) production, in the RAW 264.7 cell line, was also ameliorated by all extracts' treatments in a dose dependent manner. NO suppressive activity originated from the inhibition of inducible nitric oxide synthase (iNOS) protein expression by the extracts. Three extracts, E. ferox S., I. verum Hook. f., and P. longum L., possessed suppressive activity against, not only iNOS, but also cycloxygenase 2 (COX-2) protein expression. These three extracts may then serve as potential candidates for non steroidal analgesic inflammation drugs (NSAIDs). Furthermore, all extracts induced anti-oxidative enzyme, heme oxygenase 1, protein expression. Taken together, these results provide an important new insight into the fact that various medicinal herbs possess potent anti-oxidative and anti-inflammatory activities and might be utilized as promising agents in the field of health products. Further studies for the identification of the active compounds from medicinal herbs are clearly needed.

Anti-Oxidant Activity and Anti-Inflammatory Effects of Spiraea fritschiana Schneid Extract (참조팝나무 추출물의 항산화 활성 및 항염증 효과)

  • Choi, Eun Yeong;Heo, Seong Il;Kwon, Yong Soo;Kim, Myong Jo
    • Korean Journal of Medicinal Crop Science
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    • v.24 no.1
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    • pp.31-37
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    • 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.

Anti-inflammatory effect of enzymatic hydrolysates from Styela clava flesh tissue in lipopolysaccharide-stimulated RAW 264.7 macrophages and in vivo zebrafish model

  • Ko, Seok-Chun;Jeon, You-Jin
    • Nutrition Research and Practice
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    • v.9 no.3
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    • pp.219-226
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    • 2015
  • BACKGROUND/OBJECTIVES: In this study, potential anti-inflammatory effect of enzymatic hydrolysates from Styela clava flesh tissue was assessed via nitric oxide (NO) production in lipopolysaccahride (LPS) induced RAW 264.7 macrophages and in vivo zebrafish model. MATERIALS/METHODS: We investigated the ability of enzymatic hydrolysates from Styela clava flesh tissue to inhibit LPS-induced expression of pro-inflammatory mediators in RAW 264.7 macrophages, and the molecular mechanism through which this inhibition occurred. In addition, we evaluated anti-inflammatory effect of enzymatic hydrolysates against a LPS-exposed in in vivo zebrafish model. RESULTS: Among the enzymatic hydrolysates, Protamex-proteolytic hydrolysate exhibited the highest NO inhibitory effect and was fractionated into three ranges of molecular weight by using ultrafiltration (UF) membranes (MWCO 5 kDa and 10 kDa). The above 10 kDa fraction down-regulated LPS-induced expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2), thereby reducing production of NO and prostaglandin $E_2$ ($PGE_2$) in LPS-activated RAW 264.7 macrophages. The above 10 kDa fraction suppressed LPS-induced production of pro-inflammatory cytokines, including interleukin $(IL)-1{\beta}$, IL-6, and tumor necrosis factor $(TNF)-{\alpha}$. In addition, the above 10 kDa fraction inhibited LPS-induced phosphorylation of extracellular signal-regulated kinases (ERKs), c-Jun N-terminal kinase (JNK), and p38. Furthermore, NO production in live zebrafish induced by LPS was reduced by addition of the above 10 kDa fraction from S. clava enzymatic hydrolysate. CONCLUSION: The results of this study suggested that hydrolysates derived from S. clava flesh tissue would be new anti-inflammation materials in functional resources.

Sparassis crispa (Wulf.) Extract Inhibits IL-1β Stimulated Inflammatory Mediators Production on SW1353 Human Chondrocytes (인간 유래 연골세포에서 꽃송이버섯 추출물의 염증성 매개인자 억제 효과)

  • Kim, Eun-Nam;Jeong, Gil-Saeng
    • Korean Journal of Pharmacognosy
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    • v.49 no.4
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    • pp.305-311
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    • 2018
  • Osteoarthritis (OA) is the most common form of joint disease, characterized by articular cartilage, osteonecrosis, and osteochondral bone erosion. It is an early, progressive disease that combines joint stiffness and joint pain and reduces cartilage function and condition. Interleukin-1 beta ($IL-1{\beta}$) is thought to be important to the pathogenesis of OA and significantly increases the expression of matrix metalloproteinases (MMPs), which play an important role in cartilage degradation in OA. Sparassis crispa (Wulf.) is an edible / medicinal mushroom that has been reported to variety of biological activities. In this study, investigated the Anti-inflammatory effect of Sparassis crispa (Wulf.) ethanol extract (SCE) on $IL-1{\beta}$ stimulated SW1353 chondrocytes. SCE decreased the expression and activity of MMPs by $IL-1{\beta}$ and decreased the levels of cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS) associated with the inhibition of prostaglandin E2($PGE_2$) in $IL-1{\beta}$ stimulated SW-1353 chondrocytes. In addition, SCE inhibits the expression of MAPK (mitogen-activated protein kinase) and $NF-{\kappa}B$ (nuclear factor-kappa B) signaling in $IL-1{\beta}$ stimulated SW-1353 cells, and SCE inhibits the production of reactive oxygen species (ROS) through heme oxygenase-1 (HO-1) expression. Thus, it is suggested that SCE has a potential as an anti-inflammatory agent in osteoarthritis treatments.

Hepatoprotective Effect of Uncaria rhynchophylla on Thioacetamide-Induced Liver Fibrosis Model

  • Choi, Jeong Won;Shin, Mi-Rae;Lee, Ji Hye;Roh, Seong-Soo
    • Biomedical Science Letters
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    • v.27 no.3
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    • pp.142-153
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    • 2021
  • Liver fibrosis is a wound-healing response to chronic liver injury, which is caused by the continuous and excess deposition of extracellular matrix (ECM). The aim of this study is to investigate whether Uncaria rhynchophylla water extract (UR) can ameliorate thioacetamide (TAA)-induced liver fibrosis. The liver fibrosis model was induced on C57BL/6 mice by intraperitoneal injection with TAA three times a week for 8 weeks. UR (200 mg/kg) or silymarin (50 mg/kg) was administered orally daily for 8 weeks. Biochemical analyses including AST, ALT, MPO, and Ammonia levels were measured in serum. In the mice liver tissues, western blot and histological staining were analyzed. As a result, UR dramatically reduced the levels in serum AST, ALT, MPO, and Ammonia levels. UR treatment regulated NADPH oxidase factors expression, and antioxidant enzymes except for GPx-1/2 were significantly increased via Nrf2 activation. Furthermore, pro-inflammatory mediators, such as COX-2 and iNOS were markedly suppressed through the inhibition of NF-κB activation. Expressions of ECM-related protein including α-SMA and Collagen I were noticeably decreased. The additional histological evaluation confirmed that hepatocyte damage and collagenous fiber accumulation were attenuated. Taken together, these data suggest that UR possessed hepatoprotective effects in TAA-induced liver fibrosis via the NF-κB inactivation and Nrf2 activation. Therefore, UR may act as a potential therapeutic drug against liver fibrosis.