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204篇 您的检索式:作者名="Tim C"
    题名 作者 年代 出处 被引量
1JAK2转基因骨髓造血干/祖细胞体外长期扩增调控及定向分化的研究显示文摘目的 探讨酪氨酸激酶JAK2转基因骨髓造血干 祖细胞体外长期扩增调控和定向分化潜能的可行性。方法 克隆了一个MSCV based逆转录病毒载体称作MGI F2Jak2 ,它编码一个绿色荧光蛋白 (GFP)和两个改进的FK5 0 6结合蛋白 (F36v)与JAK2组成的融合蛋白 ,F36v是二聚化化学诱导物AP2 0 187的结合位点。应用该载体转染GpE +86包装细胞株 ,将C5 7BL 6小鼠的骨髓细胞与照射过15 0 0cGy的GpE +86产毒细胞株共同培养实现基因转导。转导后的细胞在X VIVO 15培养体系中扩增 ,分为①空白对照组 ;②AP2 0 187组 ;③干细胞因子 (SCF)组 ;④AP2 0 187+SCF组。扩增的细胞用直接法标记藻红蛋白荧光素 (PE)结合的抗Sca1、c kit、CD34 、Gr1、CD1 1b、TER 119、CD4 1 、B2 2 0和CD3单克隆抗体以流式细胞仪检测 ,并进行定向分化、祖细胞集落培养和脾细胞集落形成单位 (CFU S)的研究。结果 只有AP2 0 187+SCF组可以持续地使转基因的骨髓造血干 祖细胞大量增殖 ,扩增 80d后细胞可达10 1 4倍 ,细胞倍增时间约 30h ,扩增细胞的表型为CD34 、c kit和Sca1等干细胞表面标志强阳性 ,其它细胞表面标志如Gr1、CD1 1b、TER119、CD4 1 、B2 2 0、CD3接近阴性。所扩增的细胞在不同的细胞因子组合下 ,可定向分化为粒细胞、巨噬细胞、红细胞、赵声明 顾惜春 常乃柏 Tim Clackson C Anthony Blau 2004中华血液学杂志2004,25,2:8
2Refining pathological evaluation of neoadjuvant therapy for adenocarcinoma of the esophagus显示文摘AIM:To assess tumour regression grade(TRG)and lymph node downstaging to help define patients who benefit from neoadjuvant chemotherapy.METHODS:Two hundred and eighteen consecutive patients with adenocarcinoma of the esophagus or gastro-esophageal junction treated with surgery alone or neoadjuvant chemotherapy and surgery between 2005and 2011 at a single institution were reviewed.Triplet neoadjuvant chemotherapy consisting of platinum,fluoropyrimidine and anthracycline was considered for operable patients(World Health Organization performance status≤2)with clinical stage T2-4 N0-1.Response to neoadjuvant chemotherapy(NAC)was assessed using TRG,as described by Mandard et al.In addition lymph node downstaging was also assessed.Lymph node downstaging was defined by cN1 at diagnosis:assessed radiologically(computed tomography,positron emission tomography,endoscopic ultrasonography),then pathologically recorded as N0 after surgery;ypN0 if NAC given prior to surgery,or pN0if surgery alone.Patients were followed up for 5 years post surgery.Recurrence was defined radiologically,with or without pathological confirmation.An association was examined between t TRG and lymph node downstaging with disease free survival(DFS)and a comprehensive range of clinicopathological characteristics.RESULTS:Two hundred and eighteen patients underwent esophageal resection during the study interval with a mean follow up of 3 years(median follow up:2.552,95%CI:2.022-3.081).There was a 1.8%(n=4)inpatient mortality rate.One hundred and thirty-six(62.4%)patients received NAC,with 74.3%(n=101)of patients demonstrating some signs of pathological tumour regression(TRG 1-4)and 5.9%(n=8)having a complete pathological response.Forty four point one percent(n=60)had downstaging of their nodal disease(cN1 to ypN0),compared to only 15.9%(n=13)that underwent surgery alone(pre-operatively overstaged:cN1 to pN0),(P<0.0001).Response to NAC was associated with significantly increased DFS(mean DFS;TRG 1-2:5.1years,95%CI:4.6-5.6 vs TRG 3-5:2.8 years,95%CI:2.2-3.3,P<0.0001).Nodal down-staging conferred a significant DFS advantage for those patients with a poor primary tumour response to NAC(median DFS;TRG 3-5 and nodal down-staging:5.533 years,95%CI:3.558-7.531 vs TRG 3-5 and no nodal down-staging:1.114 years,95%CI:0.961-1.267,P<0.0001).CONCLUSION:Response to NAC in the primary tumour and in the lymph nodes are both independently associated with improved DFS.Fergus Noble Luke Nolan Adrian C Bateman James P Byrne Jamie J Kelly Ian S Bailey Donna M Sharland Charlotte N Rees Timothy J Iveson Tim J Underwood Andrew R Bateman 2013World Journal of Gastroenterology2013,19,48:4
3An evidence-based clinical guideline for the diagnosis and treatment of lumbar disc herniation with radiculopathy显示文摘D. Scott Kreiner Steven W. Hwang John E. Easa Daniel K. Resnick Jamie L. Baisden Shay Bess Charles H. Cho Michael J. DePalma Paul Dougherty Robert Fernand Gary Ghiselli Amgad S. Hanna Tim Lamer Anthony J. Lisi Daniel J. Mazanec Richard J. Meagher Robert C 2014The Spine Journal2014,,:2
4Reduced striatal volumes in Parkinson’s disease:a magnetic resonance imaging study显示文摘Background:The presence and extent of structural changes in the brain as a consequence of Parkinson’s disease(PD)is still poorly understood.Methods:High-resolution 3-tesla T1-weighted structural magnetic resonance images in sixty-five PD and 27 age-matched healthy control participants were examined.Putamen,caudate,and intracranial volumes were manually traced in the axial plane of 3D reconstructed images.Striatal nuclei volumes were normalized to intracranial volume for statistical comparison.Disease status was assessed using the Unified Parkinson’s Disease Rating Scale and Hoehn and Yahr scale.Cognitive status was assessed using global status tests and detailed neuropsychological testing.Results:Both caudate and putamen volumes were smaller in PD brains compared to controls after adjusting for age and gender.Caudate volumes were reduced by 11%(p=0.001)and putamen volumes by 8.1%(p=0.025).PD striatal volumes were not found to be significantly correlated with cognitive or motor decline.Conclusion:Small,but significant reductions in the volume of both the caudate and putamen occur in PD brains.These reductions are independent of the effects of age and gender,however the relation of these reductions to the functional loss of dopamine,which is characteristic of PD,remains unclear.Toni L Pitcher Tracy R Melzer Michael R MacAskill Charlotte F Graham Leslie Livingston Ross J Keenan Richard Watts John C Dalrymple-Alford Tim J Anderson 2012Translational Neurodegeneration2012,1,1:2
5基于一个大型随机试验预测稳定性心绞痛队列患者死亡、心肌梗死和卒中的危险评分显示文摘目的对需要抗心绞痛治疗并且左心室功能代偿症状稳定的心绞痛患者建立预测全因死亡、心肌梗死和导致致残性卒中的复合危险评分。设计大型多中心临床试验数据的多变量Cox回归分析。背景西欧、以色列、加拿大、澳大利亚和新西兰的心脏专科门诊患者。入选者7311例具有全部需要资料的患者被入选。主要结局的测量指标平均随访4.9年时间内所有原因的死亡、心肌梗死或者致残性卒中。结果1063例患者发生任何原因死亡或者持久性心肌梗死或者致残性卒中。这些复合终点的5年危险性在危险性最低的十分位患者为4%,而在危险性最高的十分位患者为35%。危险评分结合16项临床常规变量的降序排序是:年龄、左心室射血分数、吸烟、白细胞计数、糖尿病、随机血糖浓度、肌酐浓度、既往卒中病史、1周至少1次心绞痛发作、冠状动脉造影发现(如果能够获得)、降脂治疗、QT间期、收缩期血压≥150mmHg、抗心绞痛药物数量、陈旧性心肌梗死以及性别。把这个模型分别应用于任何原因所致的死亡、心肌梗死和卒中进行预测评估,所得的结果相似。危险评分似乎不能预测事件性质(39%的死亡、46%心肌梗死以及15%致残性卒中)或者冠状动脉造影或血管重建率(占29%的患者)。结论该危险评分对客观地决定稳定性心绞痛患者进一步治疗措施以减少重要预后事件发生是有帮助的。该危险评分同样可以用于将来的计划性试验。Tim C Clayton Stuart J Pocock Jacobus Lubsen Zoltán Vokó Bridget-Anne Kirwan Keith A A Fox Philip A Poole-Wilson 2006英国医学杂志中文版2006,9,1:2
6Assessment of erosion haz- ard with the USLE and GIS A ease study of the Upper Ewaso Nglro North basin of Kenya显示文摘Bancy M Mati Royston P C Morgan Francis N Gichuki John N Quinton Tim R Brewer Hans P l iniger 2000lnternation Journal of Applied Earth Ob- servation and Geoinformation2000,2,2:1
7Fuel Consumption Minimization of a Microgrid 显示文摘Carlos A Hernandez-Arambur Tim C Green Nicolas Mugniot 2005IEEE Transactions on Industry Applications2005,41,3:1
8Biochar and the nitrogen cycle:Introduction显示文摘Tim J C Leo M C 2010Journal of Environmental Quality2010,39,4:1
9Communication skills training in healthcare: A review of the literature 显示文摘Simon C Tim J Jacqueline R 2002Nurs Edu Today2002,22,3:1
10Combined rotation scarf and Akin osteotomies for hallux valgus : a patient focussed 9 year follow up of 50 patients 显示文摘Tim EK O'Kane C 2010J Foot Ankle Res2010,3,:1
11Communication skills training in heahhcare: A review of the literature 显示文摘Simon C Tim J Jacqueline R l 2002Nurs Edu Today2002,22,3:1
12Label-free imaging of trabecular meshwork cells using Coherent Anti-Stokes Raman Scattering (CARS) microscopy显示文摘Tim C L David A A Omid M 2011Mol Vis2011,17,:1
13Biochar adsorbed ammonia is bioavailable显示文摘Rezoo T T Tim J C Robert R S 2012Plant Soil2012,350,12:1
14Functional diversity of arbuscular mycorrhizas extends to the expression of plant genes involved in P nutrition显示文摘STEPHEN H B TIM C IVER J 2002Journal of Experimental Botany2002,53,374:1
15Defining the electronic and geometric structure of one-electron oxidized copper-bis-phenoxide complexes显示文摘Tim S Pratik V Russell C 2008J Am Chem Soc2008,130,15:1
16Organic compounds trapped in aqueous fluid inclusions 显示文摘Tim E R Simon C G Mark L Robinson A Q 1998Organic Geochemistry1998,29,13:1
17Interannu- al and interdecadal variations of the East Asian sum-mor monsoon and tropical Pacific SSTs, part Ⅰ: roles of the subtropical ridge显示文摘CHANG C P ZHANG Yongsheng LI Tim 2000Journal of Climate2000,13,24:1
18Towards sustainable tourism planning in New Zealand: Monitoring local government planning under the Resource Management Act显示文摘Joanne C Stephen J P Tim B 2009Tourism Management2009,30,6:1
19Establishing a standard definition for child overweight and obesity worldwide: international survey显示文摘Tim J Cole Mary C Beltizzi Katherine M Flegal 2000BM J2000,320,:1
20Defining Spinal Mobility in Ankylosing Spondylitis (AS):The Bath AS Metrology Index显示文摘TIM R JENKINSON PATRICIA A MALLORIE HELEN C WHITELOCK 1994Journal of Rheumatology1994,21,9:1
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