维普中文期刊产品整合服务
1416篇 您的检索式:作者名="David Thomas"
    题名 作者 年代 出处 被引量
1肛裂临床诊治指南(第三次修订)显示文摘“美国结直肠外科医师协会(American Societyof ColonandRectal Surgeons.ASCRS)”(协会)致力于推进结直肠和肛门疾病的相关理论以及预防和诊疗水平的提高,给患者提供优质的医疗服务。“标准委员会”由协会中在结直肠外科方面有显著专长的成员组成。该委员会的建立是为了引领国际结直肠和肛门疾病诊治的发展,以建立具有循证医学证据的临床诊疗指南。指南是涵盖性的,非指令性的,目的是为临床决策提供信息,而非具体的治疗方法。指南适用于所有相关的医护人员以及希望得到相应指南中疾病的相关诊治信息的患者。Farshid Araghizadeh ~ Robin Boushey Sridhar Chalasani George Chang Robert Cima Gary Dunn Daniel Feingold Philip Fleshner Daniel Geisler Jill Genua Sharon Gregorcyk Daniel Herzig Andreas Kaiser Ravin Kumar David Larson Steven Mills John Monson P. Terry Phang Feza Remzi David Rivadeneira Howard Ross Peter Senatore Elin Sigurdson Thomas Stahl Scott Steele Scott Strong Charles Tement Judith Trudel Madhulika Varnna Martin Weiser 丁义江(译) 皇甫少华(译) 丁曙晴(译) 2013中华胃肠外科杂志2013,16,7:70
2Detecting and Adjusting Temporal Inhomogeneity in Chinese Mean Surface Air Temperature Data显示文摘Adopting the Easterling-Peterson (EP) techniques and considering the reality of Chinese meteorolog-ical observations, this paper designed several tests and tested for inhomogeneities in all Chinese historicalsurface air temperature series from 1951 to 2001. The result shows that the time series have been widelyimpacted by inhomogeneities resulting from the relocation of stations and changes in local environmentsuch as urbanization or some other factors. Among these factors, station relocations caused the largestmagnitude of abrupt changes in the time series, and other factors also resulted in inhomogeneities to someextent. According to the amplitude of change of the difference series and the monthly distribution featuresof surface air temperatures, discontinuities identified by applying both the E-P technique and supportedby China's station history records, or by comparison with other approaches, have been adjusted. Basedon the above processing, the most significant temporal inhomogeneities were eliminated, and China's mosthomogeneous surface air temperature series has thus been created. Results show that the inhomogeneitytesting captured well the most important change of the stations, and the adjusted dataset is more reli-able than ever. This suggests that the adjusted temperature dataset has great value of decreasing theuncertaities in the study of' observed climate change in China.李庆祥 刘小宁 张洪政 Thomas C.PETERSON David R.EASTERLING 2004Advances in Atmospheric Sciences2004,21,2:66
3Successful aspiration and ethanol sclerosis of a large,symptomatic, simple liver cyst:Case presentation and review of the literature显示文摘简单的肝包囊与 2.5%-4.25% 的流行是先天的。成像,是否由美国, CT 或 MRI,在把简单包囊与另外的病原学区分开来是精确的,包括寄生,肿瘤,管相关,并且创伤性囊肿。征兆的简单的肝包囊是稀罕的,并且症状的真频率不被知道。征兆的简单的肝包囊主要大(> 4 厘米) ,在女人右边、更普通、更老的病人。绝大多数简单肝的包囊不要求治疗或后续,尽管大包囊(> 4 厘米) 可以开始与连续成像被跟随保证稳定性。到大简单包囊的症状的归属应该小心地被承担,在选择诊断以后被排除了。渴望可以被执行测试症状是否由于包囊;然而,包囊复发应该被期望。有 laparoscopic deroofing 和渴望的有限经验,由一个致硬化的代理人的灌输列在后面为征兆的包囊的治疗表明了有希望的结果。这里,我们与大、征兆的、简单的肝包囊描述一个病人经历了症状的完全的分辨率后面的包囊排水和白酒脱离,和我们在场文学的全面评论。Wojciech C Blonski Mical S Campbell Thomas Faust David C Metz 2006World Journal of Gastroenterology2006,12,18:50
4美国临床肿瘤学会IV期非小细胞肺癌化疗的临床实践指南更新显示文摘本文旨在为IV期非小细胞肺癌患者的治疗提供更新版推荐。本文资料检索源自2002年以来公布的相关随机试验文献。此指南范围限于化疗与生物治疗。更新委员会对这些文献进行了总结并提供了推荐更新。162篇文献符合标准被纳入参考。本推荐基于可改善总生存期的治疗方法。仅改善无进展生存期的治疗方法推动了对毒性及生存质量的监测。对于体力状态评分为0分或1分患者的一线治疗,可推荐以铂类为基础的细胞毒性药物的两药联用。对铂类治疗有禁忌的患者,可采用非铂类细胞毒性两药联合。对于体力状态评分为2分的患者,单一细胞毒性药物即可。对于疾病进展或经过4个周期的治疗仍对治疗无反应的患者,应停止一线细胞毒性化疗。即使在6个周期后患者对治疗仍有反应,亦应停止两药细胞毒性化疗。对于伴有明确的表皮生长因子受体(epidermal growth factor receptor,EGFR)突变的患者,可推荐一线采用吉非替尼治疗;对于EGFR突变为阴性或不明确的患者,细胞毒性化疗更佳。除具有特定临床特征的患者外,可推荐贝伐单抗与卡铂-紫杉醇联用。对于通过免疫组化证实EGFR阳性的肿瘤患者,可推荐西妥昔单抗与顺铂-长春瑞滨联用。多西紫杉醇、厄洛替尼、吉非替尼或培美曲塞被推荐作为二线治疗。对于未曾接受过厄洛替尼或吉非替尼治疗的患者,可推荐厄洛替尼作为三线治疗。现有数据不足以推荐常规三线采用细胞毒性药物。已有的证据也不足以推荐常规应用分子标记物选择化疗。Christopher G. AZZOLI Sherman Baker JR Sarah TEMIN William PAO Timothy ALIFF Julie BRAHMER David H. JOHNSON Janessa L. LASKIN Gregory MASTERS Daniel MILTON Luke NORDQUIST David G. PFISTER Steven PIANTADOSI Joan H. SCHILLER Reily SMITH Thomas J. SMITH John R. STRAWN David TRENT Giuseppe GIACCONE 丁燕(翻译) 南娟(翻译) 刘谦(翻译) 周清华(校对) 陈军(校对) 2010中国肺癌杂志2010,13,3:43
5Petawatt and exawatt class lasers worldwide显示文摘In the 2015 review paper‘Petawatt Class Lasers Worldwide’a comprehensive overview of the current status of highpower facilities of>200 TW was presented.This was largely based on facility specifications,with some description of their uses,for instance in fundamental ultra-high-intensity interactions,secondary source generation,and inertial confinement fusion(ICF).With the 2018 Nobel Prize in Physics being awarded to Professors Donna Strickland and Gerard Mourou for the development of the technique of chirped pulse amplification(CPA),which made these lasers possible,we celebrate by providing a comprehensive update of the current status of ultra-high-power lasers and demonstrate how the technology has developed.We are now in the era of multi-petawatt facilities coming online,with 100 PW lasers being proposed and even under construction.In addition to this there is a pull towards development of industrial and multi-disciplinary applications,which demands much higher repetition rates,delivering high-average powers with higher efficiencies and the use of alternative wavelengths:mid-IR facilities.So apart from a comprehensive update of the current global status,we want to look at what technologies are to be deployed to get to these new regimes,and some of the critical issues facing their development.Colin N.Danson Constantin Haefner Jake Bromage Thomas Butcher Jean-Christophe FChanteloup Enam A.Chowdhury Almantas Galvanauskas Leonida A.Gizzi Joachim Hein David I.Hillier Nicholas W.Hopps Yoshiaki Kato Efim A.Khazanov Ryosuke Kodama Georg Korn Ruxin Li Yutong Li Jens Limpert Jingui Ma Chang Hee Nam David Neely Dimitrios Papadopoulos Rory R.Penman Liejia Qian Jorge J.Rocca andrey A.Shaykin Craig W.Siders Christopher Spindloe Sándor Szatmári Raoul M.G.M.Trines Jianqiang Zhu Ping Zhu Jonathan D.Zuegel 2019High Power Laser Science and Engineering2019,7,3:33
6Diabetic nephropathy:Is it time yet for routine kidney biopsy?显示文摘Diabetic nephropathy(DN)is one of the most important long-term complications of diabetes.Patients with diabetes and chronic kidney disease have an increased risk of all-cause mortality,cardiovascular mortality,and kidney failure.The clinical diagnosis of DN depends on the detection of microalbuminuria.This usually occurs after the first five years from the onset of diabetes,and predictors of DN development and progression are being studied but are not yet implemented into clinical practice.Diagnostic tests are useful tools to recognize onset,progression and response to therapeutic interventions.Microalbuminuria is an indicator of DN,and it is considered the only noninvasive marker of early onset.However,up to now there is no diagnostic tool that can predict which patients will develop DN before any damage is present.Pathological renal injury is hard to predict only with clinical and laboratory findings.An accurate estimate of damage in DN can only be achieved by the histological analysis of tissue samples.At the present time,renal biopsy is indicated on patients with diabetes under the suspicion of the presence of nephropathies other than DN.Results from renal biopsies in patients with diabetes had made possible the classification of renal biopsies in three major groups associated with different prognostic features:diabetic nephropathy,non-diabetic renal disease(NDRD),and a superimposed non-diabetic condition on underlying diabetic nephropathy.In patients with type 2 diabetes with a higher degree of suspicion for NDRD,it is granted the need of a renal biopsy.It is important to identify and differentiate these pathologies at an early stage in order to prevent progression and potential complications.Therefore,a more extensive use of biopsy is advisable.Maria L Gonzalez Suarez David B Thomas Laura Barisoni Alessia Fornoni 2013World Journal of Diabetes2013,4,6:29
7良性阵发性位置性眩晕诊断标准显示文摘Bárány学会前庭疾病分类委员会制定了良性阵发性位置性眩晕(BPPV)诊断标准,对BPPV可操作性的诊断标准进行了介绍,包括已明确的BPPV分型和新出现的、有争议的BPPV分型,反映了当前医师对BPPV的临床和病理机制的认识。可以预期,对BPPV的深入理解将进一步促进其分类的不断完善。Michael von Brevern Pierre Bertholon Thomas Brandt Terry Fife Takao Imai Daniele Nuti David Newman-Toker 焉双梅 张欢 杨旭 吴子明 2017中国全科医学2017,20,11:28
8报告随机对照试验的CONSORT声明修订版:说明与详述(一)显示文摘有充分的证据表明目前随机对照试验(RCT)的报告质量不尽如人意。最近的方法学调查表明,不恰当的报告及试验设计将使治疗措施的效果产生偏倚。这种系统偏差正严重损害RCT本可摒弃系统偏差的特征。RCT中的系统偏差反映出了科学性差,而科学性差会严重影响正确的伦理标准。科学家和编辑们共同制定了CONSORT(试验报告统一标准,ConsolidatedStandardsofReportingTrials,)声明以提高RCT报告质量。CONSORT声明由清单和流程图组成,作者可用来报告RCT。许多优秀期刊和重要国际性编辑组织已经采用CONSORT声明。CONSORT声明为作者提高临床试验报告质量提供指南,使得评价和解释RCT结果更方便。此文旨在增强大家对CONSORT声明的理解、应用和传播,并对每个清单项目的意义和原理进行了说明。很多项目都列出优秀报告的示例,并尽可能参考相关的经验性研究,还列出几个流程图的示例。CONSORT声明的说明和详述文件在以下网址可找到:http://gffzzff905fc352db4ba6hokx9wc9cvcu06u59.ffgz.tsg.suse.edu.cn,这是提高随机对照试验报告质量的有益资源。Douglas G.Altman Kenneth F.Schulz David Moher Matthias Egger Frank Davidoff Diana Elbourne Peter C.Gφtzsch Thomas Lang the CONSORT Group 刘雪梅 2005中国循证医学杂志2005,5,9:19
9冠状动脉内影像学临床应用专家共识(第一部分):对冠状动脉介入治疗的指导与优化显示文摘欧洲心血管介入协会(EAPCI)专家组系统总结了血管内超声(IVUS)和光学相干断层成像(OCT)这两种血管内影像学检查临床应用指征的现有证据,提供了关于IVUS和OCT指导经皮冠状动脉介入治疗(PCI)的应用价值,并明确了最可能从腔内影像学指导的介入治疗中获得临床收益的患者或病变类型,同时详细论述了PCI前如何使用IVUS或OCT优化支架尺寸(支架长度和直径)和手术策略的选择。此外,专家推荐对支架失败(支架内再狭窄或支架内血栓形成)的患者应常规进行冠状动脉内影像学检查,并首选OCT。最后,重点论述了IVUS和OCT在指导PCI和评估支架失败两个方面的优势和局限性,并对未来需要深入研究的领域进行了展望。Lorenz Raber Gary S Mintz Konstantinos C Koskinas Thomas W Johnson Niels R Holm Yoshinubo Onuma Maria D Radu Michael Joner Bo Yu Haibo Jia Nicolas Meneveau Jose M.de la Torre Hemandez Javier Escaned Jonathan Hill Francesco Prati Antonio Colombo Carlo di Mario Evelyn Regar Davide Capodanno William Wijns Robert A Byme Giulio Guagliumi 2019中华心血管病杂志2019,47,1:17
10Metastatic type 1 gastric carcinoid:A real threat or just a myth?显示文摘AIM:To describe disease characteristics and treatment modalities in a group of rare patients with metastatic gastric carcinoid type 1(GCA1).METHODS:Information on clinical,biochemical,radiological,histopathological findings,the extent of the disease,as well as the use of different therapeutic modalities and the long-term outcome were recorded.Patients’data were assessed at presentation,and thereafter at 6 to 12 monthly intervals both clinically and biochemically,but also endoscopically and histopathologically.Patients were evaluated for the presence of specific symptoms;the presence of autoimmune disorders and the presence of other gastrointestinal malignancies in other family members were also recorded.The evaluation of response to treatment was defined using established WHO criteria.RESULTS:We studied twenty consecutive patients with a mean age of 55.1 years.The mean follow-up period was 83 mo.Twelve patients had regional lymph node metastases and 8 patients had liver metastases.The primary tumor mean diameter was 20.13±10.83mm(mean±SD).The mean Ki-67 index was 6.8%±11.2%.All but one patient underwent endoscopic or surgical excision of the tumor.The disease was stable in all but 3 patients who had progressive liver disease.All patients remained alive during the follow-up period.CONCLUSION:Metastatic GCA1 carries a good overall prognosis,being related to a tumor size of≥1 cm,an elevated Ki-67 index and high serum gastrin levels.Simona Grozinsky-Glasberg Dimitrios Thomas Jonathan R Strosberg Ulrich-Frank Pape Stephan Felder Apostolos V Tsolakis Krystallenia I Alexandraki Merav Fraenkel Leonard Saiegh Petachia Reissman Gregory Kaltsas David J Gross 2013World Journal of Gastroenterology2013,19,46:11
11北美神经内分泌肿瘤学会和核医学与分子影像学会有关177Lu-DOTATATE肽受体放射性核素治疗患者选择和合理应用共识显示文摘随着177Lu-1,4,7,10-四氮杂环十二烷-1,4,7,10-四乙酸-D-苯丙氨酸1-酪氨酸3-苏氨酸8-奥曲肽(DOTATATE)肽受体放射性核素治疗(PRRT)的日益普及,有关患者合理选择的问题日益增多。该文回顾了有关177Lu-DOTATATE在不同原发性神经内分泌肿瘤(NETs)中的应用文献,讨论了一些有争议的问题,并回顾了治疗的潜在禁忌证。此共识是由北美神经内分泌肿瘤学会(NANETS)和核医学与分子影像学会(SNMMI)共同制定的。NANETS是成立于2005年的北美多学科神经内分泌专家专业学会,目的在于通过增加研究和教育机会改善对NETs的管理。NANETS致力于多学科研究,由NETs涉及的不同专业的医师和科学家组成。SNMMI成立于1954年,旨在促进核医学科学、技术和实践应用的国际性科学专业组织,除了出版期刊、时事通讯和书籍外,还主办提高核医学从业人员能力和促进核医学科学新发展的国际会议及讲习班。邓艳(译) 张伟(审校) Thomas A.Hope Lisa Bodei Jennifer A.Chan Ghassan El-Haddad Nicholas Fidelman Pamela L.Kunz Josh Mailman Yusuf Menda David C.Metz Erik S.Mittra Daniel A.Pryma Diane L.Reidy-Lagunes Simron Singh Jonathan R.Strosberg 2020中华核医学与分子影像杂志2020,40,11:11
12Tracking desertification on the Mongolian steppe through NDVI and field-survey data显示文摘Changing environmental and socio-economic conditions make land degradation,a major concern in Central and East Asia.Globally satellite imagery,particularly Normalized Difference Vegetation Index(NDVI)data,has proved an effective tool for monitoring land cover change.This study examines 33 grassland water points using vegetation field studies and remote sensing techniques to track desertification on the Mongolian plateau.Findings established a significant correlation between same-year field observation(line transects)and NDVI data,enabling an historical land cover perspective to be developed from 1998 to 2006.Results show variable land cover patterns in Mongolia with a 16%decrease in plant density over the time period.Decline in cover identified by NDVI suggests degradation;however,continued annual fluctuation indicates desertificationirreversible land cover changehas not occurred.Further,in situ data documenting greater cover near water points implies livestock overgrazing is not causing degradation at water sources.In combination of the two research methodsremote sensing and field surveysstrengthen findings and provide an effective way to track desertification in dryland regions.Troy Sternberg Renchin Tsolmon Nicholas Middleton David Thomas 2011International Journal of Digital Earth2011,4,1:11
13Attributable cost of a nosocomial infection in the intensive care unit: A prospective cohort study显示文摘AIM To study the impact of hospital-acquired infections(HAIs) on cost and outcome from intensive care units(ICU) in India. METHODS Adult patients(> 18 years) admitted over 1-year, to a 24-bed medical critical care unit in India, were enrolled prospectively. Treatment cost and outcome data were collected. This cost data was merged with HAI data collected prospectively by the Hospital Infection Control Committee. Only infections occurring during ICU stay were included. The impact of HAI on treatment cost and mortality was assessed. RESULTS The mean(± SD) age of the cohort(n = 499) was42.3 ± 16.5 years. Acute physiology and chronic health evaluation-Ⅱ score was 13.9(95%CI: 13.3-14.5); 86% were ventilated. ICU and hospital length of stay were 7.8 ± 5.5 and 13.9 ± 10 d respectively. Hospital mortality was 27.9%. During ICU stay, 76(15.3%) patients developed an infection(ventilator-associated pneumonia 50; bloodstream infection 35; urinary tract infections 3), translating to 19.7 infections/1000 ICU days. When compared with those who did not develop an infection, an infection occurring during ICU stay was associated with significantly higher treatment cost [median(inter-quartile range, IQR) INR 92893(USD 1523)(IQR 57168-140286) vs INR 180469(USD 2958)(IQR 140030-237525); P < 0.001 and longer duration of ICU(6.7 ± 4.5 d vs 13.4 ± 7.0 d; P < 0.01) and hospital stay(12.4 ± 8.2 d vs 21.8 ± 13.9 d; P < 0.001)]. However ICU acquired infections did not impact hospital mortality(31.6% vs 27.2%; P = 0.49).CONCLUSION An infection acquired during ICU stay was associated with doubling of treatment cost and prolonged hospitalization but did not significantly increase mortality.Binila Chacko Kurien Thomas Thambu David Hema Paul Lakshmanan Jeyaseelan John Victor Peter 2017World Journal of Critical Care Medicine2017,6,1:11
14澳大利亚医疗服务质量管理的理念和做法显示文摘澳大利亚认为质量是组织绩效的组成部分,管理者对服务质量和安全应承担更大的责任。政府推行临床治理,加强改善质量和安全管理的研究机构,制定标准和评价指标。医院将质量和安全问题纳入机构日常和战略管理的计划并付诸实施。同时,政府和医疗机构重视病人和社区参与质量和安全管理。文章在探讨澳大利亚医疗服务质量理念、实践经验和质量评价指标的基础上,讨论澳大利亚经验对我国医疗服务管理的借鉴。杨辉 Shane Thomas David Legge 张拓红 刘峰 2006中国卫生质量管理2006,13,4:11
15Intentional ingestions of foreign objects among prisoners: A review显示文摘The intentional ingestion of foreign objects(IIFO) is described more commonly in prison populations than in the general population, with an estimated annual incidence of 1 in 1900 inmates in our state correctional facilities. Incidents often involve ingestion of small metal objects(e.g., paperclips, razor blades) or other commonly available items like pens or eating utensils. Despite ingestion of relatively sharp objects, most episodes can be clinically managed with either observation or endoscopy. Surgery should be reserved for those with signs or symptoms of gastrointestinal perforation or obstruction. For those with a history of IIFO, efforts should focus on prevention of recurrenceas subsequent episodes are associated with higher morbidity, significant healthcare and security costs. The pattern of IIFO is often repetitive, with escalation both in frequency of ingestions and in number of items ingested. Little is known about successful prevention strategies, but efforts to monitor patients and provide psychiatric care are potential best-practice strategies. This article aims to provide state-of-the art review on the topic, followed by a set of basic recommendations.David C Evans Thomas R Wojda Christian D Jones Andrew J Otey Stanislaw P Stawicki 2015World Journal of Gastrointestinal Endoscopy2015,7,3:10
16汽车用钢的最新研究进展显示文摘为满足提高燃油效率及汽车'轻量化'等方面持续的需求,学术界及工业领域一直都很重视钢铁及其替代材料的研发,这两类材料之间的竞争始终十分激烈。对汽车用钢在北美的研究现状进行了概述,并重点介绍了几种冷轧和热轧汽车用钢的研究进展及其生产情况。新一代先进高强钢的发展将依然令人关注并充满机遇。John G Speer David K Matlock Emmanuel de Moor Grant A Thomas 周澍(译) 李晟(校) 2013世界钢铁2013,,5:10
17Nature:揭示干细胞惊人异质性显示文摘论文作者George Daley教授说:"这是一项非常基础的研究,但它阐明了多能性状态广泛性。我们捕获了干细胞不同状态的详细分子谱。"研究人员通过采用多种变量如不同的化学物质、培养环境和遗传敲除来扰乱多能干细胞,研究人员探究了它们的发育景观。随后,他们分析了每个细胞的遗传组成,观察了每个细胞多能状态的微小波动。他们发现内部、化学和环境信号影响干细胞方式的许多细微差异,揭示出了复杂的发育调控因子"决策"回路。Roshan M.Kumar Patrick Cahan Alex K.Shalek Rahul Satija A.Jay Daley Keyser Hu Li Jin Zhang Keith Pardee David Gennert John J.Trombetta Thomas C.Ferrante Aviv Regev George Q.Daley James J. Collins 2014岭南现代临床外科2014,14,6:10
18Dietary and metabolomic determinants of relapse in ulcerative colitis patients: A pilot prospective cohort study显示文摘AIM To identify demographic, clinical, metabolomic, and lifestyle related predictors of relapse in adult ulcerative colitis(UC) patients.METHODS In this prospective pilot study, UC patients in clinical remission were recruited and followed-up at 12 mo to assess a clinical relapse, or not. At baseline information on demographic and clinical parameters was collected. Serum and urine samples were collected for analysis of metabolomic assays using a combined direct infusion/liquid chromatography tandem mass spectrometry and nuclear magnetic resolution spectroscopy. Stool samples were also collected to measure fecal calprotectin(FCP). Dietary assessment was performed using a validated self-administered food frequency questionnaire. RESULTS Twenty patients were included(mean age: 42.7 ± 14.8 years, females: 55%). Seven patients(35%) experienced a clinical relapse during the follow-up period. While 6 patients(66.7%) with normal body weight developed a clinical relapse, 1 UC patient(9.1%) who was overweight/obese relapsed during the follow-up(P = 0.02). At baseline, poultry intake was significantly higher in patients who were still in remission during follow-up(0.9 oz vs 0.2 oz, P = 0.002). Five patients(71.4%) with FCP > 150 μg/g and 2 patients(15.4%) with normal FCP(≤ 150 μg/g) at baseline relapsed during the follow-up(P = 0.02). Interestingly, baseline urinary and serum metabolomic profiling of UC patients with or without clinical relapse within 12 mo showed a significant difference. The most important metabolites that were responsible for this discrimination were trans-aconitate, cystine and acetamide in urine, and 3-hydroxybutyrate, acetoacetate and acetone in serum. CONCLUSION A combination of baseline dietary intake, fecal calprotectin, and metabolomic factors are associated with risk of UC clinical relapse within 12 mo.Ammar Hassanzadeh Keshtel iFloris F van den Brand Karen L Madsen Rupasri Mandal Rosica ValchevaKaren I Kroeker Beomsoo Han Rhonda C Bell Janis Cole Thomas Hoevers David S Wishart Richard N Fedorak Levinus A Dieleman 2017World Journal of Gastroenterology2017,23,21:9
19报告随机对照试验的CONSORT声明修订版:说明与详述(三)显示文摘Douglas G.Altman Kenneth F.Schulz David Moher Matthias Egger Frank Davidoff Diana Elbourne Peter C.GФtzsch Thomas Lang 刘雪梅 2005中国循证医学杂志2005,5,11:8
20Sucrose transporter2 contributes to maize growth,development,and crop yield显示文摘During daylight, plants produce excess photosynthates, including sucrose, which is temporarily stored in the vacuole. At night, plants remobilize sucrose to sustain metabolism and growth. Based on homology to other sucrose transporter(SUT) proteins, we hypothesized the maize(Zea mays) SUCROSE TRANSPORTER2(ZmSUT2)protein functions as a sucrose/Htsymporter on the vacuolar membrane to export transiently stored sucrose.To understand the biological role of ZmSut2, we examined its spatial and temporal gene expression, determined the protein subcellular localization, and characterized loss-offunction mutations. ZmSut2 mRNA was ubiquitously expressed and exhibited diurnal cycling in transcript abundance. Expressing a translational fusion of ZmSUT2 fused to a red fluorescent protein in maize mesophyll cell protoplasts revealed that the protein localized to the tonoplast. Under field conditions, zmsut2 mutant plants grew slower, possessed smaller tassels and ears, and produced fewer kernels when compared to wild-type siblings. zmsut2 mutants also accumulated two-fold more sucrose, glucose, and fructose as well as starch in source leaves compared to wild type. These findings suggest(i) ZmSUT2 functions to remobilize sucrose out of the vacuole for subsequent use in growing tissues; and(ii) its function provides an important contribution to maize development and agronomic yield.Kristen A.Leach Thu M.Tran Thomas L.Slewinski Robert B.Meeley David M.Braun 2017Journal of Integrative Plant Biology2017,59,6:8
返回顶部 每页显示:
共71页 首页 上一页 第1页 下一页 末页 /71 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