维普中文期刊产品整合服务
103篇 您的检索式:作者名="Sam Park"
    题名 作者 年代 出处 被引量
1Cancer stem cell markers CD133 and CD24 correlate with invasiveness and differentiation in colorectal adenocarcinoma显示文摘AIM:To verify that CD markers are available for detecting cancer stem cell populations and to evaluate their clinical significance in colon cancer.METHODS:Immunohistochemistry for CD133,CD24 and CD44 was performed on the tissue microarray of 523 colorectal adenocarcinomas.Medical records were reviewed and clinicopathological analysis was performed.RESULTS:In colorectal adenocarcinoma,128 of 523 cases(24.5%) were positive and 395 cases(75.5%) were negative for CD133 expression.Two hundred and sixty-four of 523 cases(50.5%) were positive and 259 cases(49.5%) were negative for CD24 expression.Five hundred and two of 523 cases(96%) were negative and 21 cases(4%) were positive for CD44 expression.Upon clinicopathological analysis,CD133 expression was present more in male patients(P = 0.002) and in advanced T stage cancer(P = 0.024).Correlation between CD24 expression and clinicopathological factors was seen in the degree of differentiation(P = 0.006).Correlation between CD44 expression and clinicopathological factors was seen in the tumor size(P = 0.001).Survival was not significantly related to CD133,CD24 and CD44 expression.CONCLUSION:CD markers were related to invasiveness and differentiation of colorectal adenocarcinoma.However,CD expression was not closely related to survival.Dongho Choi Hyo Won Lee Kyung Yul Hur Jae Joon Kim Gyeong-Sin Park Si-Hyong Jang Young Soo Song Ki-Seok Jang Seung Sam Paik 2009World Journal of Gastroenterology2009,15,18:14
2Streptococcus mutans activates the AIM2, NLRP3 and NLRC4 inflammasomes in human THP-1 macrophages显示文摘Streptococcus mutans(S. mutans), a major aetiologic agent of dental caries, is involved in systemic diseases, such as bacterial endocarditis, if it enters the bloodstream through temporary bacteraemia. Interleukin(IL)-1β, a proinflammatory cytokine, is related to the host defences against pathogens, and its synthesis, maturation, and secretion are tightly regulated by the activation of the inflammasome, an inflammatory signalling complex. This study examined the signalling mechanism of IL-1β secretion and the inflammasome pathway induced by S. mutans to explain the molecular mechanism through which systemic infection by oral streptococci can occur. After infection of THP-1 cells with S. mutans, the expression of inflammasome components was detected using various methods. S. mutans induced IL-1β secretion via caspase-1 activation, and S. mutans-induced IL-1β secretion required absent in melanoma(AIM2), NLR family pyrin domain-containing 3(NLRP3) and NLR family CARD domain-containing 4(NLRC4)inflammasome activation. In particular, the S. mutans-induced NLRP3 inflammasome was mediated by adenosine triphosphate(ATP) release, potassium depletion and lysosomal damage. Our study provides novel insight into the innate immune response against S. mutans infection.Yuri Song Hee Sam Na Eunjoo Park Mi Hee Park Hyun Ah Lee Jin Chung 2018International Journal of Oral Science2018,10,3:6
3Pretreated Oenan the Javanica extract increases anti-inflammatory cytokines, attenuates gliosis, and protects hippocampal neurons following transient global cerebral ischemia in gerbils显示文摘Recently,we have reported that Oenanthe javanica extract(OJE)displays strong neuroprotective effect against ischemic damage after transient global cerebral ischemia.However,neuroprotective mechanisms of OJE have not been fully identified.Thus,this study investigated the neuroprotection of OJE in the hippocampal CA1 area and its anti-inflammatory activity in gerbils subjected to 5 minutes of transient global cerebral ischemia.We treated the animals by intragastrical injection of OJE(100 and 200 mg/kg)once daily for 1 week prior to transient global cerebral ischemia.Neuroprotection of OJE was observed by immunohistochemistry for neuronal nuclear antigen and histofluorescence staining for Fluoro-Jade B.Immunohistochemistry of glial fibrillary acidic protein and ionized calcium-binding adapter molecule 1 was done for astrocytosis and microgliosis,respectively.To investigate the neuroprotective mechanisms of OJE,we performed immunohistochemistry of tumor necrosis factor-alpha and interleukin-2 for pro-inflammatory function and interleukin-4 and interleukin-13 for anti-inflammatory function.When we treated the animals by intragastrical administration of 200 mg/kg of OJE,hippocampal CA1 pyramidal neurons were protected from transient global cerebral ischemia and cerebral ischemia-induced gliosis was inhibited in the ischemic hippocampal CA1 area.We also found that interleukin-4 and-13 immunoreactivities were significantly increased in pyramidal neurons of the ischemic CA1 area after OJE pretreatment,and the increased immunoreactivities were sustained in the CA1 pyramidal neurons after transient global cerebral ischemia.However,OJE pretreatment did not increase interleukin-2 and tumor necrosis factor-alpha immunoreactivities in the CA1 pyramidal neurons.Our findings suggest that pretreatment with OJE can protect neurons and attenuate gliosis from transient global cerebral ischemia via increasing expressions of interleukin-4 and-13.The experimental plan of this study was reviewed and approved by the Institutional Animal Care and Use Committee(IACUC)in Kangwon National University(approval No.KW-160802-1)on August 10,2016.Joon Ha Park In Hye Kim Ji Hyeon Ahn YooHun Noh Sung-Su Kim Tae-Kyeong Lee Jae-Chul Lee Bich-Na Shin Tae Heung Sim Hyun Sam Lee Jeong Hwi Cho In Koo Hwang Il Jun Kang Jong Dai Kim Moo-Ho Won 2019Neural Regeneration Research2019,14,9:6
4燃料电池/蓄电池混合动力汽车建模与仿真(英文)显示文摘对以燃料电池为主电源,蓄电池为辅助电源的混合动力汽车进行建模。采用设定阈值的方法进行功率控制。当车辆需要的功率超过设定阈值时,蓄电池与燃料电池共同输出功率。否则,由燃料电池单独输出功率,制动能量回收为蓄电池充电。应用MATLAB/Simulink软件对FUDS和NEDC两种驾驶循环模式进行仿真,结果显示蓄电池的存电状态可以获得良好的恢复,氢气消耗量大幅度降低。孙桂芝 Sam Park 林忠玲 2018系统仿真学报2018,30,12:5
5Significant risk and associated factors of active tuberculosis infection in Korean patients with inflammatory bowel disease using anti-TNF agents显示文摘AIM:To evaluate the incidence and risk factors of Korean tuberculosis(TB) infection in patients with inflammatory bowel disease(IBD) undergoing anti-TNF treatment.METHODS:The data of IBD patients treated with anti-TNFs in 13 tertiary referral hospitals located in the southeastern region of Korea were collected retrospectively.They failed to show response or were intolerant to conventional treatments,including steroids or immunomodulators.Screening measures for latent TB infection(LTBI)and the incidence and risk factors ofactive TB infection after treatment with anti-TNFs were identified.RESULTS:Overall,376 IBD patients treated with antiTNF agents were recruited(male 255,mean age of anti-TNF therapy 32.5±13.0 years);277 had Crohn’s disease,99 had ulcerative colitis,294 used infliximab,and 82 used adalimumab.Before anti-TNF treatment,screening tests for LTBI including an interferon gamma release assay or a tuberculin skin test were performed in 82.2%of patients.Thirty patients(8%)had LTBI.Sixteen cases of active TB infection including one TB-related mortality occurred during 801 personyears(PY)follow-up(1997.4 cases per 100000 PY)after anti-TNF treatment.LTBI(OR=5.76,95%CI:1.57-21.20,P=0.008)and WBC count<5000 mm3(OR=4.5,95%CI:1.51-13.44,P=0.007)during follow-up were identified as independently associated risk factors.CONCLUSION:Anti-TNFs significantly increase the risk of TB infection in Korean patients with IBD.The considerable burden of TB and marked immunosuppression might be attributed to this risk.Eun Soo Kim Geun Am Song Kwang Bum Cho Kyung Sik Park Kyeong Ok Kim Byung Ik Jang Eun Young Kim Seong Woo Jeon Hyun Seok Lee Chang Heon Yang Yong Kook Lee Dong Wook Lee Sung Kook Kim Tae Oh Kim Jonghun Lee Hyung Wook Kim Sam Ryong Jee Seun Ja Park Hyun Jin Kim 2015World Journal of Gastroenterology2015,21,11:5
6Backward Propagation of Otoacoustic Emissions显示文摘Normal mammalian ears not only detect but also generate sounds. The ear-generated sounds, i.e., otoacoustic emissions (OAEs), can be measured in the external ear canal using a tiny sensitive microphone. In spite of wide applications of OAEs in diagnosis of hearing disorders and in studies of cochlear functions, the question of how the cochlea emits sounds remains unclear. The current dominating theory is that the OAE reaches the cochlear base through a backward traveling wave. However, recently published works, including experimental data on the spatial pattern of basilar membrane vibrations at the emission frequency, demonstrated only forward traveling waves and no signs of backward traveling waves. These new findings indicate that the cochlea emits sounds through cochlear fluids as compression waves rather than through the basilar membrane as backward traveling waves. This article reviews different mechanisms of the backward propagation of OAEs and summarizes recent experimental results.HE Wenxuan,1, 2 REN Tianying,1, 21. Oregon Hearing Research Center, Department of Otolaryngology and Head & Neck Surgery, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, NRC04, Portland, Oregon 97239 USA 2. School of Medicine, Xi’an Jiaotong University, Xi’an, Shaanxi 710061 China 2006Journal of Otology2006,1,1:4
7Risk factors for tuberculosis after gastrectomy in gastric cancer显示文摘AIM: To examine incidence of tuberculosis(TB) in gastrectomy patients and investigate the risk factors for developing TB after gastrectomy in patients with gastric cancer.METHODS: A retrospective cohort study of gastrectomy patients with gastric cancer was performed at a university-affiliated hospital in Seoul, South Korea between January 2007 and December 2009. We reviewed patient medical records and collected data associated with the risk of TB, surgery, and gastric cancer. Standardized incidence ratios(SIRs) of TB were calculated to compare the incidence of TB in gastrectomy patients with that in the general Korean population, and risk factors for TB after gastrectomies were analyzed.RESULTS: Among the 1776 gastrectomy patients, 0.9%(16/1776) developed post-gastrectomy TB, with an incidence of 223.7 cases per 100000 patients per year. The overall incidence of TB in gastrectomy patients, adjusted by sex and age, was significantly higher thanthat in the general population(SIR = 2.22, 95%CI: 1.27-3.60). Previous TB infection [odds ratio(OR) = 7.1, P < 0.001], lower body mass index(BMI)(kg/m2; OR = 1.21, P = 0.043) and gastrectomy extent(total gastrectomy vs subtotal gastrectomy)(OR = 3.48, P = 0.017) were significant risk factors for TB after gastrectomy in a multivariate analysis.CONCLUSION: TB incidence after gastrectomy is higher than that in the general population. Previous TB infection, lower BMI, and total gastrectomy are risk factors for TB after gastrectomy in patients with gastric cancer.Won Jai Jung Young Mok Park Joo Han Song Kyung Soo Chung Song Yee Kim Eun Young Kim Ji Ye Jung Moo Suk Park Young Sam Kim Se Kyu Kim Joon Chang Sung Hoon Noh Ji Yeong An Young Ae Kang 2016World Journal of Gastroenterology2016,22,8:3
8Mapping and genome organization of microsatellite sequences in rice (Oryza sativa L.)显示文摘S. Temnykh William D. Park Nicola Ayres Sam Cartinhour N. Hauck L. Lipovich Y. G. Cho T. Ishii S. R. McCouch 2000TAG Theoretical and Applied Genetics2000,,5:3
9Vascular Endothelial Growth Factor A Inhibition in Gastric Cancer显示文摘Do Joong Park Nicholas J. Thomas Changhwan Yoon Sam S. Yoon 2015Gastric Cancer2015,,:2
10EMR for early gastric cancer in Korea: a multicenter retrospective study显示文摘Jae J. Kim Jun Haeng Lee Hwoon-Yong Jung Gin Hyug Lee Joo Yong Cho Chang Beom Ryu Hoon Jai Chun Jong Jae Park Wan Sik Lee Hyun Soo Kim Moon Gi Chung Jeong Seop Moon Seok Reyol Choi Geun Am Song Hyun Yong Jeong Sam Ryong Jee Sang Yong Seol Yong Bum Yoon 2007Gastrointestinal Endoscopy2007,,4:2
11Predictors of success at six‐month follow‐up at a public smoking cessation clinic in S outh K orea显示文摘Soo‐Young Bhang Sam‐Wook Choi Joon‐Ho Ahn Kunwoo Kim Hano Kim Hye‐Kyeong Park 2013Asia‐Pacific Psychiatry2013,,3:1
12Silcon/silcon carbide composites fabricated by infiltration of a silicon melt into charcoal 显示文摘DONG-WOO SHIN SAM SHIK PARK 1999J Am Ceram Soc1999,82,11:1
13Analysis of PARK genes in a Korean cohort of early-onset Parkinson disease显示文摘Jung Mi Choi Myoung Soo Woo Hyeo-Il Ma Suk Yun Kang Young-Hee Sung Seok Woo Yong Sun Ju Chung Joong-Seok Kim Hae-won Shin Chul Hyoung Lyoo Phil Hyu Lee Jong Sam Baik Sang-Jin Kim Mee Young Park Young Ho Sohn Jin-Ho Kim Jae Woo Kim Myung Sik Lee Myoung Cho 2008Neurogenetics2008,,4:1
14Mapping and genome organization of microsatellite sequences in rice (Oryza sativa L.)显示文摘S. Temnykh William D. Park Nicola Ayres Sam Cartinhour N. Hauck L. Lipovich Y. G. Cho T. Ishii S. R. McCouch 2000TAG Theoretical and Applied Genetics2000,,5:1
15A computational study of imidazole, 4 - nitroimidazole ,5 - nitroimidazole and 4,5 - dinitroimidazole 显示文摘Soo Gyeong Cho Young Gu Cheun Bang Sam Park 1998Journal of Molecular Structure ( Theochem)1998,432,1:1
16Inves tigation of water separation from water in oil emulsion using electric field 显示文摘Woo Taeg Kwon Kunyik Park Sam Duck Han 2010Journal of Industrial and Engineering Chemistry2010,,16:1
17Mapping and genome organization of microsatellite sequences in rice (Oryza sativa L.)显示文摘S. Temnykh William D. Park Nicola Ayres Sam Cartinhour N. Hauck L. Lipovich Y. G. Cho T. Ishii S. R. McCouch 2000TAG Theoretical and Applied Genetics2000,,5:1
18EMR for early gastric cancer in Korea: a multicenter retrospective study显示文摘Jae J. Kim Jun Haeng Lee Hwoon-Yong Jung Gin Hyug Lee Joo Yong Cho Chang Beom Ryu Hoon Jai Chun Jong Jae Park Wan Sik Lee Hyun Soo Kim Moon Gi Chung Jeong Seop Moon Seok Reyol Choi Geun Am Song Hyun Yong Jeong Sam Ryong Jee Sang Yong Seol Yong Bum Yoon 2007Gastrointestinal Endoscopy2007,,4:1
19Studies on the chemical constituents of Tilia koreana(I)on the chemical constituents of the Stem-Bark of Tilia mandsurica显示文摘CHANG MIN KIM SAM AIK KANG YOUNG SOON PARK 1988Korean Journal of Pharmacognosy1988,19,3:1
20A computational study of imidazole, 4-nitroimidazole, 5-nitroimidazole and 4,5-dinitroimidazole显示文摘Soo Gyeong Cho Young Gu Cheun Bang Sam Park 1998Journal of Molecular Structure: THEOCHEM1998,,1:1
返回顶部 每页显示:
共6页 首页 上一页 第1页 下一页 末页 /6 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费