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3918篇 您的检索式:作者名="O Donnell"
    题名 作者 年代 出处 被引量
1尿钠排泄、血压、心血管病与死亡率的关系:社区前瞻性流行病学队列研究显示文摘WHO建议人群钠摄人<2 g/d作为预防心血管病的措施之一,但这一目标在任何国家都没有实现。该建议主要基于短期血压试验的个体水平数据,没有来自随机试验或观察性研究的关于低钠摄入与降低心血管事件的数据。前瞻性城市农村流行病学研究目前正在21个国家进行。该文对其中18个国家的数据进行分析,其中包含了临床结果数据。Mente A O'Donnell M Rangarajan S McQueen M Dagenais G Wielgosz A Lear S Ah STL Wei L Diaz R Avezum A Lopez-Jaramillo P Lanas F Mony P Szuba A Iqbal R Yusuf R Mohammadifard N Khatib R Yusoff K Ismail N Gulec S Rosengren A Yusufali A Kruger L Tsolekile LP Chifamba J Dans A Alhabib KF Yeates K Teo K Yusuf S 刘莉 叶鹏 2018中华高血压杂志2018,26,12:29
2限制性与自由输血策略对心血管疾病患者非心脏手术效果的影响:系统回顾与Meta分析显示文摘目的比较采取限制性与自由输血策略的心血管疾病患者的非心脏手术结局。数据来源搜集涉及医院红细胞输注阈值的随机控制试验。检索CENTRAL、Medline、EMBase、CINAHL、PubMed、LILACS、NHSBT输血证据库、Clinical Trials.gov、WHO国际临床试验注册平台、国际标准随机对照临床试验编号登记、欧盟临床试验登记。检索时间为2015-11-02之前。试验选择选取发表与未发表的比较限制性与自由输血阈值的随机控制试验,试验均纳入心血管疾病患者。结果检索到41项试验,其中7项试验纳入心血管疾病患者。另选取4项纳入心血管疾病患者的试验。最终共搜集11项纳入心血管疾病患者(n=3 033)的试验进行Meta分析(限制性输血1 514例,自由输血1 519例)。输血阈值与30 d死亡率之间联系的汇集风险比例为1.15〔95%CI(0.88,1.50),P=0.50〕,异质性较小(I^2=14%)。限制性输血患者的急性冠脉综合征风险与自由输血患者相比更高〔9项试验;风险比例1.78,95%CI(1.18,2.70),P=0.01,I^2=0%〕。结论对急性冠脉综合征或慢性心血管疾病患者采取80 g/L以下的限制性输血阈值可能并不安全,对病死率与其他结局的影响并不确定。这些数据可暂时支持对急性或慢性心血管疾病患者使用更加自由的输血阈值(>80 g/L),但有待更具有说服力的高质量的心血管疾病患者随机试验进行验证。Docherty AB O' Donnell R Brunskill S 本刊编辑部 2016中国全科医学2016,19,15:12
3Use of Voltage Limits for Current Limitations in Grid-forming Converters显示文摘Renewable generation interfaced through gridforming converters are proposed as a replacement for synchronous generators in power systems.However,compared to the synchronous generator,the power electronics converter has a strict limit on the current to avoid overcurrent damage.The gridforming converter acts like a voltage source,directily controlling the voltage.This conflicts with the operation of the conventional current limit control,which is applied to a current source.The switch between the voltage control and current control aimed to impose the current limit leads to synchronization instability.This paper proposes a novel control scheme which can be applied to the grid forming voltage control in order to enforce current limits.The proposed method has been verified through simulation and hardware tests in both symmetrical and asymmetrical faults to perform current suppression while maintaining synchronization stability in the voltage control mode.Junru Chen Federico Prystupczuk Terence O’Donnell 2020CSEE Journal of Power and Energy Systems2020,6,2:12
4Determinants of the impact of blood pressure variability on neurological outcome after acute ischaemic stroke显示文摘Introduction: Increased blood pressure variability (BPV) is detrimental after acute ischaemic stroke, but the interaction between BPV and neuroimaging factors that directly influence stroke outcome has not been explored. Methods: We retrospectively reviewed inpatients from 2007 to 2014 with acute anterior circulation ischaemic stroke, CT perfusion and angiography at hospital admission, and a modified Rankin Scale (MRS) 30- 365 days after stroke onset. BPV indices included SD, coefficient of variation and successive variation of the systolic blood pressure between 0 and 120 hours after admission. Ordinal logistic regression models were fitted to MRS with predictor variables of BPV indices. Models were further stratified by CT perfusion volumetric measurements, proximal vessel occlusion and collateral score. Results: 110 patients met the inclusion criteria. The likelihood of a 1-point rise in the MRS increased with every 10 mm Hg increase in BPV (OR for the 3 BPV indices ranged from 2.27 to 5.54), which was more pronounced in patients with larger ischaemic core volumes (OR 8.37 to 18.0) and larger hypoperfused volumes (OR 6.02 to 15.4). This association also held true for patients with larger mismatch volume, proximal vessel occlusion and good collateral vessels. Conclusions: These results indicate that increased BPV is associated with worse neurological outcome after stroke, particularly in patients with a large lesion core volume, concurrent viable ischaemic penumbra, proximal vessel occlusion and good collaterals. This subset of patients, who are often not candidates for or fail acute stroke therapies such as intravenous tissue plasminogen activator or endovascular thrombectomy, may benefit from interventions aimed at reducing BPV.Adam de Havenon Alicia Bennett Gregory J Stoddard Gordon Smith Lee Chung Steve O’Donnell J Scott McNally David Tirschwell Jennifer J Majersik 2017Stroke & Vascular Neurology2017,2,1:6
5否思“后真相”:基于李普曼舆论学视角显示文摘当前西方后真相研究涵盖哲学、政治学、传播学、舆论学等学科,触及当代哲学中有关“真理”“客观事实”等诸多理论讨论。“后真相”的定义强调“客观事实”在舆论形成过程中的作用被大大削弱了,但“舆论”作为这个定义中的关键词却没有引起西方学界的足够重视。借鉴李普曼的舆论学理论视角对后真相的定义进行批判性反思发现:舆论形成的最大动因是“虚构”,而不是“客观事实”;并且,基于李普曼对人类语言主观性的思考,有必要指出“客观事实”和“事实的客观性”的区别。研究认为西方的价值观、偏见及思维方式使得后真相研究的局限性十分突出。后真相研究需要从客观事实回到完整的人,他们不是为某种假定的“真相”所制约的人,而是在解蔽过程中不断开放的人。Elliot O’Donnell 刘学蔚 2020新闻与传播评论2020,73,3:6
6阿司匹林及氯吡格雷双抗与阿司匹林单药治疗急性轻度缺血性卒中及高危短暂性脑缺血发作的比较:系统综述及meta分析显示文摘目的为了评估对于急性轻度缺血性卒中及短暂性脑缺血发作(TIA)患者应用联合阿司匹林及氯吡格雷双抗治疗,相较于单用阿司匹林,预防血栓再发及出血事件的有效性及安全性。研究设计对随机、安慰剂对照研究进行系统综述及meta分析。Qiukui Hao Malavika Tampi Martin O' Donnell Farid Foroutan Reed AC Siemieniuk Gordon Guyatt 李洁(译) 毛晨晖(校) 2019英国医学杂志中文版2019,22,5:5
7The contribution of botanic gardens to ex situ conservation through seed banking显示文摘Target 8 of the Global Strategy for Plant Conservation calls for 'at least 75 per cent of threatened plant species in ex situ collections, preferably in the country of origin, and at least 20 per cent available for recovery and restoration programmes by 2020'.Botanic gardens make a significant contribution to ex situ conservation of wild species with more than a third of plant species represented in botanic gardens collections. These collections are a combination of living collection and seed banked material. Seed banking can provide an efficient form of conservation for wild plant genetic diversity.Information from Botanic Gardens Conservation International's(BGCI) databases(GardenSearch,PlantSearch, ThreatSearch and GlobalTreeSearch) has been analysed as well as survey data to report on global, regional and national seed banking trends.Information from BGCI's databases indicates that there are at least 350 seed banking botanic gardens in 74 countries. In total 56,987 taxa have been banked including more than 9000 taxa that are threatened with extinction. 6881 tree species are stored in ex situ seed bank collections. More than half(3562) of these tree species are single country endemics and represent species from more than 166 countries.This study suggests that institutions are increasingly conserving plant species via seed banking.However the majority of species in collections that have a conservation assessment are not threatened with extinction. This disjunction between species that are threatened and those conserved in seed banks needs to be addressed. Data from BGCI's databases can be used to enable prioritisation of threatened plant species for collection and conservation in seed banks. Further recommendations for botanic gardens involved in seed conservation are presented.Katherine O'Donnell Suzanne Sharrock 2017Plant Diversity2017,39,6:4
8Decreased expression of hyperpolarisation-activated cyclic nucleotide-gated channel 3 in Hirschsprung's disease显示文摘AIM: To determine if hyperpolarisation-activated nucleotide-gated(HCN) channels exist in human colon, and to investigate the expression of HCN channels in Hirschsprung's disease.METHODS:We investigated HCN1,HCN2,HCN3 and HCN4 protein expression in pull-through specimens from patients with Hirschsprung’s disease(HSCR,n=10)using the proximal-most ganglionic segment and distalmost aganglionic segment,as well as in healthy control specimens obtained at the time of sigmoid colostomy closure in children who had undergone anorectoplasty for imperforate anus(n=10).Fluorescent immunohistochemistry was performed to assess protein distribution,which was then visualized using confocal microscopy.RESULTS:No HCN1 channel expression was observed in any of the tissues studied.Both HCN2 and HCN4proteins were found to be equally expressed in the aganglionic and ganglionic bowel in HSCR and controls.HCN3 channel expression was found to be markedly decreased in the aganglionic colon vs ganglionic colon and controls.HCN2-4 channels were seen to be expressed within neurons of the myenteric and submucosal plexus of the ganglionic bowel and normal controls,and also co-localised to interstitial cells of Cajal in all tissues studied.CONCLUSION:We demonstrate HCN channel expression in human colon for the first time.Reduced HCN3expression in aganglionic bowel suggests its potential role in HSCR pathophysiology.Anne Marie O’Donnell David Coyle Prem Puri 2015World Journal of Gastroenterology2015,21,18:4
9HLA-Haploidentical Bone Marrow Transplantation for Hematologic Malignancies Using Nonmyeloablative Conditioning and High-Dose, Posttransplantation Cyclophosphamide显示文摘Leo Luznik Paul V. O'Donnell Heather J. Symons Allen R. Chen M. Susan Leffell Marianna Zahurak Ted A. Gooley Steve Piantadosi Michele Kaup Richard F. Ambinder Carol Ann Huff William Matsui Javier Bola?os-Meade Ivan Borrello Jonathan D. Powell Elizabeth Ha 2008Biology of Blood and Marrow Transplantation2008,,6:4
10尿钠和钾排泄与血压的关系显示文摘高血压影响着全球10亿人口,是死亡、脑卒中、心肌梗死、充血性心力衰竭和慢性肾损伤的主要原因。钠摄入是高血压一个可调控的决定因素。盐和血压国际性研究(international study of salt and blood pressure,INTERSALT)结果显示钠摄入和血压呈中等程度正相关[1]。然而INTERSALT不是一个足够大型的研究,其钠摄入和血压的相关性是否受地区、参与人群特征和钠或钾摄入水平影响还有待于进一步研究。Mente A O'Donnell MJ Rangarajan S 练桂丽 叶鹏 2014中华高血压杂志2014,22,9:4
11The Importance of Heparan Sulfate in Herpesvirus Infection显示文摘Herpes simplex virus type-1 (HSV-1) is one of many pathogens that use the cell surface glycosaminoglycan heparan sulfate as a receptor. Heparan sulfate is highly expressed on the surface and extracellular matrix of virtually all cell types making it an ideal receptor. Heparan sulfate interacts with HSV-1 envelope glycoproteins gB and gC during the initial attachment step during HSV-1 entry. In addition,a modified form of heparan sulfate,known as 3-O-sulfated heparan sulfate,interacts with HSV-1 gD to induce fusion between the viral envelope and host cell membrane. The 3-O-sulfation of heparan sulfate is a rare modification which occurs during the biosynthesis of heparan sulfate that is carried out by a family of enzymes known as 3-O-sulfotransferases. Due to its involvement in multiple steps of the infection process,heparan sulfate has been a prime target for the development of agents to inhibit HSV entry. Understanding how heparan sulfate functions during HSV-1 infection may not only be critical for inhibiting infection by this virus,but it may also be crucial in the fight against many other pathogens as well.Christopher D. O'Donnell Deepak Shukla 2008Virologica Sinica2008,23,6:3
12Heart Disease and Stroke Statistics—2006 Update: A Report From the American Heart Association Statistics Committee and Stroke Statistics Subcommittee显示文摘Thomas Thom Nancy Haase Wayne Rosamond Virginia J. Howard John Rumsfeld Teri Manolio Zhi-Jie Zheng Katherine Flegal Christopher O’Donnell Steven Kittner Donald Lloyd-Jones David C. Goff Yuling Hong Robert Adams Gary Friday Karen Furie Philip Gorelick Bret 2006Circulation2006,,6:3
13Advanced monitoring of machining operations显示文摘R. Teti K. Jemielniak G. O’Donnell D. Dornfeld 2010CIRP Annals - Manufacturing Technology2010,,2:2
14Pericardial Fat, Visceral Abdominal Fat, Cardiovascular Disease Risk Factors, and Vascular Calcification in a Community-Based Sample: The Framingham Heart Study显示文摘Guido A. Rosito Joseph M. Massaro Udo Hoffmann Frederick L. Ruberg Amir A. Mahabadi Ramachandran S. Vasan Christopher J. O’Donnell Caroline S. Fox 2008Circulation2008,,5:2
15Validation of the Capsule Endoscopy Crohn’s Disease Activity Index (CECDAI or Niv score): a multicenter prospective study显示文摘Y. Niv S. Ilani Z. Levi M. Hershkowitz E. Niv Z. Fireman S. O’Donnel C. O’Morain R. Eliakim E. Scapa N. Kalantzis C. Kalantzis P. Apostolopoulos E. Gal 2012Endoscopy2012,,01:2
16Al2024-T3合金热变形加工工艺的流变应力预测(英文)显示文摘为了预测Al2024-T3合金热变形加工工艺的流变应力行为,在应变速率(0.001~100 s^(-1))、应变(0.1~0.5)和温度(573~773 K)条件下,进行了等温压缩试验。采用统计参数,如平均相对误差绝对值(AARE)和相关系数(R)评估了Al2024合金不同的本构模型和最新构建的本构模型的预测能力。与其他的模型相比,最新构建的模型能得到最低的AARE(4.6%)和最高的相关系数(0.99)。因此,与其他模型相比,该模型能更精确地描述Al2027-T3合金的变形行为。D. TRIMBLE G. E. O'DONNELL 2016Transactions of Nonferrous Metals Society of China2016,26,5:2
17INTERIM RESULTS FROM A NATIONAL MULTICENTER PHASE II TRIAL OF COMBINATION BACILLUS CALMETTE-GUERIN PLUS INTERFERON ALFA-2B FOR SUPERFICIAL BLADDER CANCER显示文摘MICHAEL A. O’DONNELL KATHLEEN LILLI CHRISTINA LEOPOLD 2004The Journal of Urology2004,,3:2
18FUSARIUM-ID v. 1.0: A DNA Sequence Database for Identifying Fusarium显示文摘David M. Geiser María del Mar Jiménez-Gasco Seogchan Kang Izabela Makalowska Narayanan Veeraraghavan Todd J. Ward Ning Zhang Gretchen A. Kuldau Kerry O’donnell 2004European Journal of Plant Pathology (-)2004,,5:2
19Metafrontier frameworks for the study of firm-level efficiencies and technology ratios显示文摘Christopher J. O’Donnell D. S. Prasada Rao George E. Battese 2008Empirical Economics2008,,2:2
20Dexamethasone Added to Mepivacaine Prolongs the Duration of Analgesia After Supraclavicular Brachial Plexus Blockade显示文摘Simon J. Parrington Dermot O’Donnell Vincent W.S. Chan Danielle Brown-Shreves Rajeev Subramanyam Melody Qu Richard Brull 2010Regional Anesthesia and Pain Medicine2010,,5:2
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