• 대한한방내과학회지
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• 제27권3호
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• pp.688-697
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• 2006

Objectives : Peroxynitrite ($ONOO^-$), $O_2^-$ and nitric oxide (NO) are cytotoxic species that can oxidize several cellular components such as proteins. lipids and DNA. It has been implicated in the aging process and age-related disease such as Alzheimer's disease, rheumatoid arthritis, cancer and atherosclerosis. The aim of this study was to investigate $ONOO^-$ scavenging activities. and that of its precursors. NO and $O_2^-$ of Trigonellae Semen. Methods : To investigate $ONOO^-$. NO. $O_2^-$ scavenging activities, fluorescent probes, namely 2'.7'-dichlorodihydrofluorescein diacetate (DCFDA). 4.5-diaminofluorescein (DAF-2) and dihydrorhodamine 123 (DHR 123) were used. Protein expression levels of iNOS, COX-2, NF-${\kappa}B$, and VCAM-1 were assayed by western blot. Results : Trigonellae Semen markedly scavenged authentic $ONOO^-$, $O_2^-$ and NO. It also inhibited $ONOO^-$ induced by $O_2^-$ and NO which are derived from SIN-1. Furthermore. Trigonellae Semen inhibited $ONOO^-$, $O_2^-$ and NO generation in LPS-treated ICR mouse kidney postmitochondria. Trigonellae Semen inhibited gene expression of iNOS, COX-2, VCAM-l and NF-${\kappa}B$ (p65) activation. Conclusions : These results suggest that Trigonellae Semen is an effective $ONOO^-$, $O_2^-$ and NO scavenger. and that this substance has a potential role as an inhibitor of the aging process, and in therapy against age-related diseases.

• 치위생과학회지
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• 제15권6호
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• pp.753-760
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• 2015

숙주 면역 반응과 면역 체계는 치주 질환에 대한 개인의 감수성의 주요 원인이다. 세균 감염과 흡연은 치주 조직의 파괴의 원인과 진행에 관여하는 중요한 환경 위험 요인이다. 따라서, 본 연구는 사람 치주인대세포에서 LPS와 니코틴이 전염증성 사이토카인인 iNOS/COX-2의 발현과 NO/$PGE_2$ 생산에 미치는 영향을 알아보고 NFATc1가 어떤 기전으로 항염작용을 하는지 밝히고자 하였다. LPS와 니코틴을 처리한 사람 치주인대세포에서 iNOS/COX-2의 발현과 함께 NO/$PGE_2$ 생산은 증가되었다. NFATc1 inhibitor인 CsA는 LPS와 니코틴에 의해 유도되는 iNOS/COX-2의 발현과 함께 NO/$PGE_2$ 생산을 감소시켰다. 이러한 연구 결과로 볼 때, NFAT signaling pathway가 LPS와 니코틴에 의한 iNOS/COX-2의 발현을 조절하여 NO/$PGE_2$ 매개 염증에 대해 방어할 수 있다고 생각된다.

• BMB Reports
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• 제54권10호
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• pp.528-533
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• 2021

Osteoarthritis (OA) is a degenerative disorder that can result in the loss of articular cartilage. No effective treatment against OA is currently available. Thus, interest in natural health products to relieve OA symptoms is increasing. However, their qualities such as efficacy, toxicity, and mechanism are poorly understood. In this study, we determined the efficacy of avenanthramide (Avn)-C extracted from oats as a promising candidate to prevent OA progression and its mechanism of action to prevent the expression of matrix-metalloproteinases (MMPs) in OA pathogenesis. Interleukin-1 beta (IL-1β), a proinflammatory cytokine as a main causing factor of cartilage destruction, was used to induce OA-like condition of chondrocytes in vitro. Avn-C restrained IL-1β-mediated expression and activity of MMPs, such as MMP-3, -12, and -13 in mouse articular chondrocytes. Moreover, Avn-C alleviated cartilage destruction in experimental OA mouse model induced by destabilization of the medial meniscus (DMM) surgery. However, Avn-C did not affect the expression of inflammatory mediators (Ptgs2 and Nos) or anabolic factors (Col2a1, Aggrecan, and Sox9), although expression levels of these genes were upregulated or downregulated by IL-1β, respectively. The inhibition of MMP expression by Avn-C in articular chondrocytes was mediated by p38 kinase and c-Jun N-terminal kinase (JNK) signaling, but not by ERK or NF-κB. Interestingly, Avn-C added with SB203580 and SP600125 as specific inhibitors of p38 kinase and JNK, respectively, enhanced its inhibitory effect on the expression of MMPs in IL-1β treated chondrocytes. Taken together, these results suggest that Avn-C is an effective candidate to prevent OA progression and a natural health product to relieve OA pathogenesis.

• 치위생과학회지
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• 제19권1호
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• pp.39-47
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• 2019

Background: Light-emitting diodes curing unit (LCU), which emit blue light, is used for polymerization of composite resins in many dentistry. Although the use of LCU for light-cured composite resin polymerization is considered safe, it is still controversial whether it can directly or indirectly have harmful biological influences on oral tissues. The aim of this study was to elucidate the biological effects of LCU in wavelengths ranging from 440 to 490 nm, on the cell viability and secretion of inflammatory cytokines in MDPC-23 odontoblastic cells and inflammatory-induced MDPC-23 cells by lipopolysaccharide (LPS). Methods: The MTT assay and observation using microscope were performed on MDPC-23 cells to investigate the cell viability and cytotoxic effects on LCU irradiation. Results: MDPC-23 cells and LPS stimulated MDPC-23 cells were found to have no effects on cell viability and cell morphology in the LCU irradiation. Nitric oxide (NO) and prostaglandin $E_2$ which are the pro-inflammatory mediators, and interleukin-$1{\beta}$ and tumor necrosis factor-${\alpha}$ (TNF-${\alpha}$) which are the proinflammatory cytokines were significantly increased in MCPD-23 cells after LCU irradiation as time increased in comparison with the control. LCU irradiation has the potential to induce inflammation or biological damages in normal dental tissues, including MDPC-23 cells. Conclusion: Therefore, it is necessary to limit the use of LCU except for the appropriate dose and irradiation time. In addition, LCU irradiation of inflammatory-induced MDPC-23 cells by LPS was reduced the secretion of NO compared to the LPS alone treatment group and was significantly reduced the secretion of TNF-${\alpha}$ in all the time groups. Therefore, LCU application in LPS stimulated MDPC-23 odontoblastic cells has a photodynamic therapy like effect as well as inflammation relief.

• 문화기술의 융합
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• 제5권2호
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• pp.389-395
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• 2019

본 연구는 인체에 유익한 효과가 있고 부작용 없이 장기간 안전하게 사용할 수 있으며 간보호 및 간기능 개선에 탁월한 효과가 있는지 양배추출물의 간보호 효과에 대하여 알아보았다. 약물(APAP)에 의해 유도된 간손상 동물모델에서 수행된 실험에서, 양배추 추출물은 간손상 마커인 AST 및 ALT를 효과적으로 감소시킴으로써 간 보호 및 간 기능 개선 효과를 나타냄을 알 수 있었다. 양배추 추출물은 간질환의 예방 또는 치료용 약학적 추출물로서 유효하다는 것이다. 특히, 양배추 추출물은 간손상에 수반되는 급성 염증 반응에 관여하는 염증 매개체 iNOS 및 COX-2 및 전염증성 사이토카인 $IL-1{\beta}$의 발현을 감소시킴으로써 간염 염증을 치료하는데 효과적이었다. 그 결과, $100{\sim}150^{\circ}C$에서 열처리 한 배추 추출물은 생배추 추출물에 비해 간기능 개선 효과 또는 항염증 효과가 우수 하였다.

• 문화기술의 융합
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• 제5권2호
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• pp.397-404
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• 2019

본 연구는 인체에 유익한 효능을 지니고 부작용없이 장기간 안전하게 사용할 수 있으며 간보호 및 간기능 개선에 탁월한 효능을 갖는 가열 브로콜리 추출물을 연구하기 위해 수행되었다. 열처리된 브로콜리 추출물은 세포 독성을 나타내지 않으므로 안전하게 사용할 수 있었다. 약제에 의한 간손상 동물모델 (APAP)에서 수행 한 실험에서, 열처리된 양배추 추출물은 간손상 마커인 AST 및 ALT를 효과적으로 감소시킴으로써 간보호 및 간기능 개선 효과를 나타냄을 알 수 있었고, 이는 열처리된 브로콜리 추출물이 간질환을 예방하거나 치료하기 위한 약학적 추출물로서 효과적이라는 것을 시사한다. 특히, 열처리된 브로콜리 추출물은 간손상을 동반한 급성염증 반응에 관여하는 염증 매개체 iNOS 및 COX-2 및 염증 유발성 사이토카인 $IL-1{\beta}$의 발현을 감소시킴으로써 간염 염증을 치료하는데 효과적이라고 할 수 있다.

• Laboraroty Animal Research
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• 제33권2호
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• pp.76-83
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• 2017

Chronic obstructive pulmonary diseases (COPD) is an important disease featured as intense inflammation, protease imbalance, and air flow limitation and mainly induced by cigarette smoke (CS). In present study, we explored the effects of $Pycnogenol^{(R)}$ (PYC, pine bark extract) on pulmonary fibrosis caused by CS+lipopolysaccharide (LPS) exposure. Mice were treated with LPS intranasally on day 12 and 26, followed by CS exposure for 1 h/day (8 cigarettes per day) for 4 weeks. One hour before CS exposure, 10 and 20 mg/kg of PYC were administered by oral gavage for 4 weeks. PYC effectively reduced the number of inflammatory cells and proinflammatory mediators caused by CS+LPS exposure in bronchoalveolar lavage fluid. PYC inhibited the collagen deposition on lung tissue caused by CS+LPS exposure, as evidenced by Masson's trichrome stain. Furthermore, transforming growth $factor-{\beta}1$ ($TGF-{\beta}1$) expression and Smad family member 2/3 (Smad 2/3) phosphorylation were effectively suppressed by PYC treatment. PYC markedly reduced the collagen deposition caused by CS+LPS exposure, which was closely involved in $TGF-{\beta}1$/Smad 2/3 signaling, which is associated with pulmonary fibrotic change. These findings suggest that treatment with PYC could be a therapeutic strategy for controlling COPD progression.

• 한국융합학회논문지
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• 제12권2호
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• pp.295-300
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• 2021

본 연구는 Celeriac Extract의 전 염증성 사이토카인의 생성 억제에 미치는 영향을 살펴보고 억제 정도를 확인하기 위하여 실시되었다. 염증은 전 염증성 사이토카인인 TNF-α나 IL-6, IL-1β 및 활성산소와 같은 매개인자에 의해 나타난다. 이에 RAW264.7 세포에 lipopolysaccharide(LPS) 로 자극하여 생성된 TNF-α나 IL-6, IL-1β과 같은 전염증성 사이토카인과 NO 같은 활성산소에 대한 Celeriac Extract(1ug/mL, 10ug/mL, 100ug/mL)의 영향을 살펴보았다. 그 결과 Celeriac Extract은 세포 독성 없이 TNF-α나 IL-6의 생성과 NO생성을 유의성 있게 저해하였다. 따라서 이러한 결과는 셀러리악 추출물이 전 염증성 사이토카인 및 NO 생성을 억제하여 염증 반응을 약화시킬 수 있음을 시사한다.

• 인간식물환경학회지
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• 제23권2호
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• pp.191-199
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• 2020

Noni has been used for medicinal purposes for more than 2,000 years in South Pacific Polynesia, China and India, and has been heavily ingested as an extract for its excellent antioxidant and anti-inflammatory effects. However, a recent study found that the noni extract causes digestive disorders, kidney problems, and liver diseases, which made it necessary to use it for other purposes than as an extract. In this study, we want to evaluate the potential of noni as an anti-oxidant, anti-inflammatory and anti-wrinkling agent. Methods: Noni was freeze-dried, extracted in water, and concentrated. Skin cells were treated with the noni extract for 24 hrs and then were exposed to UVB (55 mJ/cm²). After 48 hrs of incubation, pro-inflammatory cytokine, elastase, MMP-1 and type-1 procollagen levels were measured by ELISA. Results: To find out the antioxidant effect of the noni extract, the DPPH and ABTS radical scavenging activity experiments were conducted and the noni extract showed 97.0 % and 92.0 % antioxidant efficacy at 200 ㎍/mL respectively. The noni extract (50 and 100 ㎍/mL) decreased IL-6 and TNF-α in RAW 264.7 cells induced by LPS in a concentration-dependent manner. In the RT-PCR experiment involving NO production, the noni extract (50 and 100 ㎍/mL) inhibited NO production by strongly inhibiting iNOS mRNA expression, and also inhibited the elevation of MMP-1 and elastases caused by UVB irradiation by 25.0 % and 7.0 % respectively. In addition, type-1 procollagen was elevated by 20.0 % by the noni extract treatment in HaCaT cells. Conclusion: The noni extract has photoprotective ability by reducing proinflammatory mediators, elastase and MMP-1 production, and elevation of collagen synthesis. Our findings suggest that the noni extract might be a good natural substance to protect against UVB-induced premature skin aging.

• 대한본초학회지
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• 제32권3호
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• pp.97-103
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• 2017

Objective : According to recent studies, Anemarrhenae Rhizoma has anti-inflammatory activities of DW extract, but it hasn't not yet conducted to evaluate inflammatory factors about 80% ethanol extract. Therefore, The aim of this study is to investigate the various effects of individual or combined 80% ethanol extract of Anemarrhenae Rhizoma on cell viability and various anti-inflammatory factors. Methods : Anemarrhenae Rhizoma extract was prepared with 80% ethanol. MTT assay, ELISA, and Luminex were performed in LPS-activated RAW 264.7 cell line to measure cytotoxicity, Nitric oxide (NO), cyclooxygenase-2 (COX-2), prostaglandin E2 ($PGE_2$), Leukotriene B4 ($LTB_4$), and cytokines ($IL-1{\beta}$, IL-6, and $TNF-{\alpha}$), respectively. Results : At concentration of $200{\mu}g/m{\ell}$ Anemarrhenae Rhizoma extract, cytotoxicity was observed in RAW 264.7 cells. However, at concentration less than $100{\mu}g/m{\ell}$ of Anemarrhenae Rhizoma, cytotoxicity was not observed in RAW 264.7 cells. All concentration of Anemarrhenae Rhizoma extract showed no difference of NO, and $IL-1{\beta}$level in RAW 264.7 cells compared with control group. In contrast, at concentration of $100{\mu}g/m{\ell}$ Anemarrhenae Rhizoma extract significantly inhibited LPS-induced production of COX-2, PGE2, and $LTB_4$ level in RAW 264.7 cells. In addition, the production of proinflammatory cytokines (IL-6, $TNF-{\alpha}$) in LPS-induced RAW 264.7 cells was significantly decreased at concentration of all or 10, and $100{\mu}g/m{\ell}$, respectively. Conclusion : These findings demonstrate that Anemarrhenae Rhizoma has inhibitory effect on inflammatory mediators in LPS-activated RAW 264.7 cells showing possible developed as a raw material for new therapeutics to ease the symptoms related with inflammatory.