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흰쥐 경골의 신연 골형성술에서 염증성 싸이토카인의 발현
황일웅(Il Ung Hwang),조태준(Tae-Joon Cho),최인호(In Ho Choi),정진엽(Chin Youb Chung),유원준(Won Joon Yoo),김은희(Eun Hee Kim) 대한정형외과학회 2004 대한정형외과학회지 Vol.39 No.1
목적: 본 연구의 목적은 신연 골형성술에서의 염증성 싸이토카인의 발현 양상을 일반 골절 치유 과정과 비교하는 것이다. 대상 및 방법: 흰쥐 경골의 단순 골절 치유 모델과 신연 골형성술 모델을 대상으로 3주에 걸쳐서 단계적으로 골 조직을 채취하였다. 총 리보핵산을 추출하고 각종 염증성 싸이토카인 발현의 시간적 변화를 검사하였다. 수술 후 7일과 9일째에 조직에서 면역조직화학 검사를 통해서 IL-6의 공간적 발현 양상을 조사하였다. 결과: IL-1β, IL-6는 단순 골절 치유 과정에서 수술 후 1일째에 발현이 절정에 달하였다가 3일째부터 발현이 감소하여 수술 전 상태로 회복되었다. IL-1β는 신연 골형성술 중 신연 기간에도 발현의 변화가 없었으나 IL-6은 신연을 시작함에 따라 다시 발현이 증가하는 양상을 보였다. 면역조직화학 검사장 IL-6은 골수 세포 뿐 아니라 연골세포, 골모세포 그리고 신연 간격의 미성숙 간엽세포에서 발현이 확인되었다. 결론: 신연 변형력에 의한 IL-6의 발현이 유도되는 것을 확인하였으며, 이는 조절된 염증 반응이 신연 골형성술 과정에서 신생골 형성에 부분적으로 기여할 가능성을 시사하는 것으로 생각된다. Purpose: The purposes of this study were to investigate the expression pattern of pro-inflammatory cytokines during distraction osteogenesis and to compare these with expression during simple fracture healing. Materials and Methods: Regenerated bones from the rat tibia subjected distraction osteogenesis and simple fracture healing models were harvested over three-week periods. Temporal expressions of mRNA of pro-inflammatory cytokines were investigated by RNase protection assay. Immunohistochemical studies for IL-6 were performed in postoperative day 7 and 9 tissue section specimens. Results: IL-1β and IL-6 produced detectable signals, while IL-1α, TNF α and TNF β did not. The mRNA expressions of IL-1β and IL-6 were markedly upregulated on postoperative day 1 and then subsided to the preoperative level. IL-1β mRNA expression remained the same even when distraction began. However, IL-6 mRNA expression was reactivated during the distraction phase. Immunohistochemical study revealed the expressions of IL-6 not only at the transitional zone of the transchondroid ossification, in young osteoblasts lining newly formed trabeculae and in hematopoietic cells in the marrow but also in primitive mesenchymal cells at the distraction gap. Conclusion: Distraction strain re-induced IL-6 expression during distraction osteogenesis, which suggests that well-controlled inflammatory reaction might contribute to active new bone formation in distraction osteogenesis.
몇 가지 항균제가 시험관내에서 내독소와 TNF-α, IL-6 분비에 미치는 영향
최정현,문건웅,김명훈,이동건,박윤희,김상일,김태연,유진홍,김양리,신완식,강문원 대한화학요법학회 1997 대한화학요법학회지 Vol.15 No.2
To evaluate antibiotic-induced endotoxin release(AIER) and its correlation with some cytokines, we measured endotoxin level and tumor necrosis factor alpha(TNF-α) and interleukin6(IL-6) production in mononuclear cells in vitro after exposure of Pseudomonas aeruginosa to antibiotics belonging to different class with two extreme concentrations. The tested concetration of antibiotics were set up according to peak serum level. The low concetration of ceftazidirne and low concentration of imiperiem increased AIER, but high concentration of ceftazideme, high concentration of ciprofloxacin, high concentration of cefoperazone/sulbactam, high concentration of amikacin, and high concentration of meropenem reduced AIER.Interestingly, combined treatment of these antibiotics markedly reduced AIER, But the major cyotkines, TNF-α and IL-6 were not affect by type and concettration of antibiotics, combined treatment of antibiotics, and level of endotoxin released by antiboitics. In this study, we observed AIER was different according to type of antibiotics, concentration of antibiotics, and combination of antibiotics, But AIER had poor correlation with TNF-α and IL-6 in Pseudomonas aeruginosa. It suggests that cytokine release is not solely dependent to endotoxin, but more complex cascade is needed. More invesfigations, such as endotoxin induced cytokine mRNA expression, relationship with penicillin-binding proteins and endotoxin-neutralizing effect of antibiotic itself, must be performed.
Choi, Suck-Chei,Choi, Eun-Ju,Oh, Hyun-Mee,Lee, SungGa,Lee, Jeong-Kun,Lee, Meung-Su,Shin, Yong-Il,Choi, Suck-Jun,Chae, Jeong-Ryong,Lee, Kang-Min,Lee, Won-Jung,Park, Jae-Sik,Shin, Chang-Yell,Oh, Tae-You WJG Press 2006 WORLD JOURNAL OF GASTROENTEROLOGY Vol.12 No.30
<P>To investigate whether, or how, DA-9601, which is a new gastroprotective agent, inhibits TNF-alpha-induced inflammatory signals in gastric epithelial AGS cells.</P>
CHOI, SUN-IL,JUNG, TAE-DONG,CHO, BONG-YEON,CHOI, SEUNG-HYUN,SIM, WAN-SUP,HAN, XIONGGAO,LEE, SANG JONG,KIM, YOUNG-CHEUL,LEE, OK-HWAN UNKNOWN 2019 INTERNATIONAL JOURNAL OF MOLECULAR MEDICINE Vol.44 No.2
<P> Processed products from agricultural produce generate a large number of agricultural by-products that contain a number of functional substances. These are often discarded owing to the lack of suitable processing methods. The present study investigated the anti-photoaging properties of fermented rice bran (FRB), soybean cake (FSB) and sesame seed cake (FSC) on ultraviolet B (UVB)-irradiated hairless mouse skin. Results indicated that the oral administration of FRB, FSB and FSC effectively inhibited the UVB irradiation-induced expression of matrix metalloproteinase (MMP)-2, MMP-9, MMP-3 and MMP-13. Reverse transcription-quantitative polymerase chain reaction results also demonstrated that FRB, FSB and FSC significantly inhibited the UVB-induced expression of the genes encoding tumor necrosis factor-α, inducible nitric oxide synthase, interleukin (IL)-6 and IL-1β when compared with the UVB-vehicle group (P<0.05). Additionally, collagen degradation and mast cell infiltration were reduced in hairless mouse skin. Furthermore, UVB-induced wrinkle formation was also significantly reduced in mouse skin compared with the UVB-vehicle group (P<0.05). These results reveal that fermented agricultural by-products may serve as potential functional materials with anti-photoaging activities. </P>
Interleukin-2가 호산구 생존에 미치는 영향과 기전에 관한 연구
김효석 ( Hyo Seok Kim ),이영목 ( Young Mok Lee ),최영수 ( Young Soo Choi ),김경호 ( Kyung Ho Kim ),임건일 ( Geon Il Im ),문승혁 ( Jeong Sung Whan ),정성환 ( Moon Seung Hyug ),김현태 ( Hyeon Tae Kim ),어수택 ( Uh Soo Taek ),김용훈 대한결핵 및 호흡기학회 1996 Tuberculosis and Respiratory Diseases Vol.43 No.3
( Dae-woon Choi ),( Sun Young Jung ),( Jisu Kang ),( Young-do Nam ),( Seong-il Lim ),( Ki Tae Kim ),( Hee Soon Shin ) 한국미생물생명공학회(구 한국산업미생물학회) 2018 Journal of microbiology and biotechnology Vol.28 No.2
Nanometric Lactobacillus plantarum nF1 (nLp-nF1) is a biogenics consisting of dead L. plantarum cells pretreated with heat and a nanodispersion process. In this study, we investigated the immune-enhancing effects of nLp-nF1 in vivo and in vitro. To evaluate the immunostimulatory effects of nLp-nF1, mice immunosuppressed by cyclophosphamide (CPP) treatment were administered with nLp-nF1. As expected, CPP restricted the immune response of mice, whereas oral administration of nLp-nF1 significantly increased the total IgG in the serum, and cytokine production (interleukin-12 (IL-12) and tumor necrosis factor alpha (TNF-α)) in bone marrow cells. Furthermore, nLp-nF1 enhanced the production of splenic cytokines such as IL-12, TNF-α, and interferon gamma (IFN-γ). In vitro, nLp-nF1 stimulated the immune response by enhancing the production of cytokines such as IL-12, TNF-α, and IFN-γ. Moreover, nLp-nF1 given a food additive enhanced the immune responses when combined with various food materials in vitro. These results suggest that nLp-nF1 could be used to strengthen the immune system and recover normal immunity in people with a weak immune system, such as children, the elderly, and patients.
MicroRNA-155 as a proinflammatory regulator in acute gouty arthritis
( Jung Ho Choi ),( Hye Mi Jin ),( Moon Ju Kim ),( Young Nan Cho ),( Kwang Il Nam ),( Seung Jung Kee ),( Jang Bae Moon ),( Dong Jin Park ),( Yong Wook Park ),( Shin Seok Lee ),( Tae Jong Ki ) 대한내과학회 2013 대한내과학회 추계학술발표논문집 Vol.2013 No.1
Introduction: MicroRNA-155 (miR-155) is crucial for the proinflammatory activation of human myeloid cells and antigen-driven inflammatory arthritis. Since, the functional role of miR-155 in gouty arthritis has not been defined. The aim of this study was to examine the role of miR-155 in pathogenesis of gouty arthritis. Materials and methods: Samples from fourteen patients with gouty arthritis and ten healthy controls were obtained. Monosodium urate (MSU) crystals were prepared by recrystallization from uric acid. Total RNA was isolated using the miRNeasy kit (Qiagen). The miScript Reverse Transcription Kit (Qiagen) was used for cDNA preparation. MiScript primer assay (Qiagen) were used for semiquantitative determination of the expression of human miR-155. Human TNF-α and IL-1β in supernatants were measured by Luminex (Millipore, USA) according to the instructions of the manufacturer. Gout peritonitis mice (Male C57BL/6J) model used to analyze expressions of miR-155, Src homology 2-containing inositol phosphatase-1 (SHIP-1), and inflammatory cytokines. Results: The samples from gout patients proved to be highly enriched in miR-155, with levels of expression being 4-fold higher than those found in peripheral blood mononuclear cells (PBMC) from healthy controls and gout (p<0.05). miR-155 was found to be strongly induced by stimulation of MSU crystals after 24 hours and their expressions gradually decreased. Stimulating with MSU crystals for the indicated times, and the level of SHIP-1 was found to be gradually decreased in according to over-expression of miR-155. miR-155 promoted MSU-induced proinflammatory cytokine production. Commensurate with our observations in human synovial monocytes, miR-155 expression was elevated in gout mice model. SHIP-1 protein levels were markedly reduced in cells by MSU stimulated, compared to the control. MSU crystal induced peritonitis mice significantly increased the production of inflammatory cytokines, such as TNF-α and IL-1β. Conclusion: Overexpression of miR-155 in synovial fluid mononuclear cells (SFMC) led to down-regulation of SHIP-1 and an increase in the production of proinflammatory cytokines.
LPS로 유도한 RAW 264.7 세포의 염증반응에서 자초(紫草)의 항염증 효과
최선복 ( Sun Bok Choi ),배기상 ( Gi Sang Bae ),조일주 ( Il Joo Jo ),박경철 ( Kyoung Chel Park ),서승희 ( Seung Hee Seo ),김동구 ( Dong Goo Kim ),신준연 ( Joon Yeon Shin ),곽태신 ( Tae Sin Gwak ),이정현 ( Jung Hyun Lee ),이금산 ( G 대한본초학회 2013 大韓本草學會誌 Vol.28 No.2
Objective: Lithospermum Erythrorhizon (LE) has been used as an anti-bacterial and anti-inflammatory agent. However, it is unclear that LE aqueous extract could show the anti-inflammatory effects in RAW 264.7cells. The purpose of this study was to investigate the anti-inflammatory effect of aqueous extract from LE on lipopolysaccharide (LPS) - induced inflammatory response. Methods: To measure out the cytotoxicity of LE, we performed the MTT assay. To evaluate the anti-inflammatory effects of LE, we examined the inflammatory mediators such as nitric oxide (NO), prostaglandin E2 (PGE2) and pro-inflammatory cytokines (tumor necrosis factor (TNF)-a, interleukin, (IL)-1β and (IL)-6) on RAW 264.7 cells. We also examined molecular mechanisms such as mitogen-activated protein kinases (MAPKs) and nuclear factor-B (NF-κB) activation by western blot. Results : Aqueous Extract from LE itself did not have any cytotoxic effect in RAW 264.7 cells. Aqueous extract from LE inhibited LPS-induced productions of inflammatory mediators such as NO, PGE2, and pro-inflammatory cytokines including TNF-a, IL-1β and IL-6 in RAW 264.7cells. In addition, LE inhibited the phosphorylation of p38 kinases (p38), c-Jun NH2-terminal kinase (JNK), and NF-κB activation in RAW 264.7 cells. Conclusion : LE down-regulated LPS-induced production of inflammatory mediators through the inhibition of p38, JNK and NF-κB activation. Taken together, these results could provide the evidence for the anti-inflammatory effects of LE. Therefore, LE may be a novel target in the management of inflammation and help to support a potential strategy for prevention and therapy of inflammatory diseases.
MicroRNA-155 as a proinflammatory regulator via SHIP-1 down-regulation in acute gouty arthritis
Jin, Hye Mi,Kim, Tae-Jong,Choi, Jung-Ho,Kim, Moon-Ju,Cho, Young-Nan,Nam, Kwang-Il,Kee, Seung-Jung,Moon, Jang Bae,Choi, Seok-Yong,Park, Dong-Jin,Lee, Shin-Seok,Park, Yong-Wook BioMed Central 2014 ARTHRITIS RESEARCH AND THERAPY Vol.16 No.2
<P><B>Introduction</B></P><P>Gout is characterized by episodes of intense joint inflammation in response to intra-articular monosodium urate monohydrate (MSU) crystals. miR-155 is crucial for the proinflammatory activation of human myeloid cells and antigen-driven inflammatory arthritis. The functional role of miR-155 in acute gouty arthritis has not been defined. Therefore, the aim of this study was to examine the role of miR-155 in pathogenesis of acute gouty arthritis.</P><P><B>Methods</B></P><P>Samples from 14 patients with acute gouty arthritis and 10 healthy controls (HCs) were obtained. Peripheral blood mononuclear cells (PBMCs) and synovial fluid mononuclear cells (SFMCs) were cultured <I>in vitro</I> with MSU crystals, and gene expression (human miR-155 and SHIP-1) were assessed by real-time PCR. THP-1 cells were stimulated by MSU crystals and/or miR-155 transfection and then subjected to Western blot analysis. Levels of human tumor necrosis factor-alpha (TNF-α) and interleukin (IL)-1β in cell culture supernatants were measured by Luminex. Immunohistochemistry was performed on formalin-fixed gout tissues with anti–SHIP-1 antibody. A C57BL/6 J male mouse model of gout was used to analyze the expressions of miR-155, SHIP-1, and inflammatory cytokines.</P><P><B>Results</B></P><P>The samples from gouty arthritis were highly enriched in miR-155, with levels of expression being higher than those found in PBMC from HC. Treatment of the cells with MSU crystals strongly induced miR-155. In addition, overexpression of miR-155 in the cells decreased levels of SHIP-1 and promoted production of MSU-induced proinflammatory cytokines, such as TNF-α and IL-1β. Consistent with <I>in vitro</I> observations, miR-155 expression was elevated in the mouse model of gout. The production of inflammatory cytokines was markedly increased in MSU crystal induced peritonitis mice.</P><P><B>Conclusions</B></P><P>Overexpression of miR-155 in the gouty SFMC leads to suppress SHIP-1 levels and enhance proinflammatory cytokines.</P>