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( Eun Wha Choi ),( Hee Woo Lee ),( Jun Sik Lee ),( Il Yong Kim ),( Jae Hoon Shin ),( Je Kyung Se ) 생화학분자생물학회(구 한국생화학분자생물학회) 2019 BMB Reports Vol.52 No.4
The present study evaluated the role of AHNAK in Bartonella henselae infection. Mice were intraperitoneally inoculated with 2 × 10<sup>8</sup> colony-forming units of B. henselae Houston-1 on day 0 and subsequently on day 10. Blood and tissue samples of the mice were collected 8 days after the final B. henselae injection. B. henselae infection in the liver of Ahnak-knockout and wild-type mice was confirmed by performing polymerase chain reaction, with Bartonella adhesion A as a marker. The proportion of B. henselaeinfected cells increased in the liver of the Ahnak-knockout mice. Granulomatous lesions, inflammatory cytokine levels, and liver enzyme levels were also higher in the liver of the Ahnak-knockout mice than in the liver of the wild-type mice, indicating that Ahnak deletion accelerated B. henselae infection. The proportion of CD4+interferon-y(IFN-y)<sup>+</sup> and CD4<sup>+</sup>interleukin (IL)-4<sup>+</sup> cells was significantly lower in the B. henselae-infected Ahnak-knockout mice than in the B. henselae-infected wild-type mice. In vitro stimulation with B. henselae significantly increased IFN-y and IL-4 secretion in the splenocytes obtained from the B. henselae-infected wild-type mice, but did not increase IFN-y and IL-4 secretion in the splenocytes obtained from the B. henselae-infected Ahnak-KO mice. In contrast, IL-1α, IL-1β, IL-6, IL-10, RANTES, and tumor necrosis factor-α secretion was significantly elevated in the splenocytes obtained from both B. henselae-infected wild-type and Ahnak-knockout mice. These results indicate that Ahnak deletion promotes B. henselae infection. Impaired IFN-y and IL-4 secretion in the Ahnak-knockout mice suggests the impairment of Th1 and Th2 immunity in these mice. [BMB Reports 2019; 52(4): 289-294]
OMC-2010 추출물이 마우스의 비장세포 cytokine 생성에 미치는 영향
배기상 ( Gi Sang Bae ),박경철 ( Kyoung Chel Park ),최선복 ( Sun Bok Choi ),조일주 ( Il Joo Jo ),서상완 ( Sang Wan Seo ),김종진 ( Jong Jin Kim ),신용국 ( Yong Kook Shin ),김민선 ( Min Sun Kim ),박규환 ( Kyu Hwan Park ),김현식 ( Hyu 대한본초학회 2012 大韓本草學會誌 Vol.27 No.5
Objective : This study was performed to estimate the effects of OMC-2010 extract on cytokine production in mouse spleen cells. Methods : Mouse spleen cells were pre-treated with ethanol and water extract of OMC-2010 for 1 h, then stimulated with lipopolysaccharide (LPS, 1 μg/ml) for 48 h. Then the cells were harvested for real-time reverse transcription polymerase chain reaction to detect cytokines. Results : OMC-2010 ethanol extract significantly inhibited the LPS-induced interleukin (IL)-1beta, tumor necrosis factor (TNF)-alpha and IL-5 mRNA expressions, but not shown such changes in IL-6, IL-4, IL-13. OMC-2010 water extract significantly inhibited the LPS-induced TNF-alpha, and IL-5 mRNA expressions, but not shown such changes in IL-1beta, IL-6, IL-4, IL-13. Conclusions : Theses results could suggest that both ethanol and water OMC-2010 extract could inhibit the TNF-alpha and IL-5 mRNA expression.
Il Yun Jeong,Chang Hyun Jin,Yong Dae Park,Hyo Jung Lee,Dae Seong Choi,Myung Woo Byun,Yeung Ji Kim 한국식품영양과학회 2008 Preventive Nutrition and Food Science Vol.13 No.4
The anti-inflammatory activities of an ethanol extract of Caesalpinia sappan L. (CS) were investigated in LPS-induced RAW 264.7 cells. Result indicated that CS inhibited the LPS-induced NO production in a dose-dependent manner with an IC?? of 10.9 ㎍/mL. In addition, CS attenuated the iNOS mRNA and protein expression by inhibiting NF-κB activation. CS also suppressed the productions of IL-6 and MCP-1 in a dose-dependent manner, with IC?? values of 15.9 ㎍/mL and 5.47 ㎍/mL, respectively. In addition to the anti-inflammatory activities, CS decreased intracellular ROS formation in the same cells. In conclusion, CS inhibited the production of NO, IL-6 and MCP-1 via a suppression of the NF-κB activation and intracellular ROS generation.
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>
표적세포의 Nitric oxide 합성이 LAK 세포의 세포독성에 대한 예민도에 미치는 영향
박성일,박주형,이치국,김신재,최보금,곽재용,임창열,Park, Sung Il,Park, Ju Hyung,Lee, Chi Kug,Kim, Shin Chae,Choi, Bo Geum,Kwak, Jae Yong,Yim, Chang Yeol 대한면역학회 2001 Immune Network Vol.1 No.2
Background: Nitric oxide (NO), a cytotoxic molecule is produced in various tissues including tumor cells during interleukin-2 (IL-2) therapy . Lymphokine-activated killer (LAK) cells are induced during IL-2 therapy, and have cytotoxic activity against tumor cells. The current study investigated the effects of NO synthesized in target cells or exposure of target cells to NO on the sensitivity of target cells to LAK cell cytotoxicity. Methods: Cytotoxicity was measured using 4 h chromium release assays. LAK cells which were induced by a 4 day incubation of BALB/c mouse splenocytes with IL-2 (6,000 IU/mL) were employed as effector cells. RD-995 skin tumor cells originated from a C3H/HeN mouse were employed as target cells. NO synthesis in target cells was induced by a 24 h incubation of RD-995 cells with $IFN{\gamma}$ (25 U/mL), TNF (50 U/mL) and IL-1 (20 U/mL). S-nitrosyl acetylpenicillamine (SNAP), an NO donor, was used to expose target cells to NO. $N^G$-monomethyl-L-arginine (MLA) and carboxy-PTIO were added during cytotoxicity assays to inhibit NO synthesis, and to scavenge NO produced by target cells, respectively. Results: Sensitivity of NO-producing RD-995 cells to LAK cell cytotoxicity was decreased by addition of MLA and carboxy-PTIO during cytotoxicity assays. However, the two reagents had no effect on the sensitivity of non-NO-producing RD-995 cells. Pretreatment of RD-995 target cells with SNAP increased the sensitivity in comparison with untreated cells. Conclusions: Sensitivity of target cells to LAK cell cytotoxicity is increased by target cell NO synthesis or exposure to NO. Further studies are needed to evaluate whether these in vitro results have relevance to in vivo phenomena.
Yong Dae Park,Young Man Lee,Min Ah Kang,Hyo Jung Lee,Chang Hyun Jin,Dae Seong Choi,Dong Sub Kim,Si-Yong Kang,Wang-Geun Kim,Il Yun Jeong 한국식품과학회 2010 Food Science and Biotechnology Vol.19 No.2
In earlier investigations, Perilla frutescens (L.)Britt. cv. Chookyoupjaso (CJC) mutants were obtained following mutagenesis induced by 200 Gy of γ-rays. The aim of this study was to compare the CJC and 6 P. frutescens (L.) Britt. cv. Chookyoupjaso mutant lines (CJMs), with respect to their phytochemical profiles and to evaluate anti-inflammatory properties by selecting the most bioactive CJM. The methanol extracts of CJMs were tested for inhibition of nitric oxide (NO) production in lipopolysaccharide (LPS)-stimulated RAW 264.7 macrophage cells. Among them, CJM-45 showed significant inhibition of NO production. This extract was further partitioned using ethyl acetate (EtOAc), butanol (BuOH), and water. The EtOAc fraction (EF-cjm45) was evaluated for antiinflammatory activities. These results indicated that the EF-cjm45 reduced NO production by inhibiting inducible nitric oxide synthase (iNOS) expression. The EF-cjm45treatment also significantly diminished expression of MCP-1 and IL-6. In the EF-cjm45, perillaketone,isoegomaketone, ursolic acid, kaempferol, and rosmarinic acid were also found. This study reveals the potential therapeutic use of bioactive CJM-45 and justifies the wide application for this plant in traditional medicine.
Choi, Eun-Kyoung,Kim, Jae-Il,Ju, Won-Kyu,Carp, Richard I.,Wisniewski, Henryk M.,Kim, Jin,Choi, Jin-Ho,Kim, Yong-Sun 한림대학교 부설 환경ㆍ생명과학연구소 1999 일송 의학ㆍ생명과학 심포지엄 Vol.- No.1
A number of aspects of the pathogenesis of scrapie remain to be elucidated. The cellular and molecular aspects of the neuropathology in scrapte suggest the possibility that the proinflammatory cytokines could act as apthogenic mediators in this neurodegencrative disease. To understand this possibility, we examined the expression of prounflammatory cytokine genes in brains of IM mice-infected with 87V scrapie agent. Additionally, we also analyzed the activity of nuclear factor-kappa B (NF-k B), which is the major transcriptional activator for inflammatory cylokinesk and formation of reactive oxygen species (ROS) as a common upsiteam messenger for its activation. The induction of mRNAs of the inflammatory cytokines, IL-1α, IL-1β and TNF-α, was detected only int he brains of scrapie-infected mice. The activity of NF-kB was significantly increased in the nuclear extracts from brains of the scrapie-infected group and the immunoreactivity of NF-kB was increased in the hippocampus and thalamus in the brains of scrapie-infected mice. The NF-kB immunoreactivity was observed mainly in GFAP-positive astrocytes and also detected int he PrP-amyloid plaques in the brains of 87V scrapie-infected mice Gene expression of IL-6 and NOS, the representative target genes for NF-kB activation, wee activated only in the infected group. The production of LOS was significantly increased in the brain mitochondrial litions of scrapie-infected mice. These results suggest that prion accumulation in astrocytes might activate NF-kB through the increase of ROS generation, and thus alterations in NF-kB-directed gene expression may contribute to both the neurodegeneration and proinflammatory responses which occur in scrapie C 1999 Elsevier Science B. V. All rights reserved.
Baek, Yong-Hyeon,Seo, Byung-Kwan,Lee, Jae-Dong,Huh, Jeong-Eun,Yang, Ha-Ru,Cho, Eun-Mi,Choi, Do-Young,Kim, Deog-Yoon,Cho, Yoon-Je,Kim, Kang-Il,Park, Dong-Suk The Korean Acupuncture Moxibustion Medicine Societ 2005 대한침구의학회지 Vol.33 No.4
Background & Objective: Articular cartilage is a potential target for drugs designed to inhibit the activity of matrix metalloproteinases (MMPs) to stop or slow the destruction of the proteoglycan and collagen in the cartilage extracellular matrix. The purpose of this study was to investigate the effects of Aralia cordata Thunb. in inhibiting the release of glycosaminoglycan (GAG), the degradation of collagen, and MMP activity in rabbit articular cartilage explants. Methods : The cartilage-protective effects of Aralia cordata Thunb. were evaluated by using glycosaminoglycan degradation assay, collagen degradation assay, colorimetric analysis of MMP activity, measurement of lactate dehydrogenase activity and histological analysis in rabbit cartilage explants culture. Results : Interleukin-la (IL-1a) rapidly induced GAG, but collagen was much less readily released from cartilage explants. Aralia cordata Thunb. significantly inhibited GAG and collagen release in a concentration-dependent manner. Aralia cordata Thunb. dose-dependently inhibited MMP-3 and MMP-13 expression and activities from IL-1a-treated cartilage explants cultures when tested at concentrations ranging from 0.02 to 0.2 mg/ml. Aralia cordata Thunb. had no harmful effect on chondrocytes viability or cartilage morphology in cartilage explants. Histological analysis indicated that Aralia cordata Thunb. reduced the degradation of the cartilage matrix compared with that of IL -1a-treated cartilage explants.
Jeong, Il-Yun,Jin, Chang-Hyun,Park, Yong-Dae,Lee, Hyo-Jung,Choi, Dae-Seong,Byun, Myung-Woo,Kim, Yeung-Ji The Korean Society of Food Science and Nutrition 2008 Preventive Nutrition and Food Science Vol.13 No.4
The anti-inflammatory activities of an ethanol extract of Caesalpinia sappan L. (CS) were investigated in LPS-induced RAW 264.7 cells. Result indicated that CS inhibited the LPS-induced NO production in a dose-dependent manner with an $IC_{50}$ of $10.9\;{\mu}g/mL$. In addition, CS attenuated the iNOS mRNA and protein expression by inhibiting NF-${\kappa}B$ activation. CS also suppressed the productions of IL-6 and MCP-1 in a dose-dependent manner, with $IC_{50}$ values of $15.9\;{\mu}g/mL$ and $5.47\;{\mu}g/mL$, respectively. In addition to the anti-inflammatory activities, CS decreased intracellular ROS formation in the same cells. In conclusion, CS inhibited the production of NO, IL-6 and MCP-1 via a suppression of the NF-${\kappa}B$ activation and intracellular ROS generation.