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896篇 您的检索式:作者名="Mark N"
    题名 作者 年代 出处 被引量
1Oxidative stress and male reproductive health显示文摘有缺点的精子功能的主要原因之一是氧化应力,它不仅破坏精子 DNA 的正直而且在精子血浆膜由于蛋白质和类脂化合物的并行的损坏限制这些房间的使肥沃的潜力。如此的氧化压力的起源看起来包含精子线粒体,它有一个趋势作为一篇序言产生 superoxide 阴离子的高水平到进入内在的 apoptotic 串联。不幸地,这些房间有很小的能力因为他们仅仅在基础切除修理(BER ) 拥有第一酶,对如此的攻击作出回应小径, 8-oxoguanine glycosylase 1 (OGG1 ) 。后者成功地创造一个 abasic 地点,而是精子因为他们缺乏下游的蛋白质,不能进一步处理氧化损害(APE1, XRCC1 ) 需要完成修理过程。在第一个有丝分裂的部门的 S 阶段的开始以前继续 BER 小径是卵母细胞的责任。如果一个错误被卵母细胞在开发的这个阶段犯,一个变化将被创造那将在身体在每个房间被代表。如此的机制可以在在作为年龄的后果在他们的细菌线承受了氧化应力的男性的后代观察的童年癌症和另外的疾病解释增加,环境或生活方式因素。在男不孕病人的精子的氧化 DNA 损坏的高流行可以为在 vitro 构思的孩子的健康有含意并且在细菌线为对免费激进的产生的起源的当前的研究担任一位司机。Robert J Aitken Tegan B Smith Matthew S Jobling Mark A Baker Geoffry N De Iuliis 2014Asian Journal of Andrology2014,16,1:48
2GRADE指南:Ⅷ.证据质量评价--间接性显示文摘直接证据来自直接比较我们关注的干预措施用于我们关注的患者人群,并测量患者重要结局的研究。间接证据可由以下4种方式之一产生。第一,患者可能与我们关注的患者不同(适用性一词常用于这类间接性)。第二,所检验的干预措施可能与我们关注的干预措施不同。有关患者和干预措施间接性的决策取决于对生物或社会因素差异是否大到可能使效应尺度出现预期的较大差异的考虑。第三,结果可能有别于最初设定的结局指标——如替代结果本身不重要,但测量之是基于替代结果的变化反映患者重要结局变化这一假设。第四类间接性在概念上与前三类不同,发生于临床医生必须在未经直接比较的两种干预措施间做出选择时。这种情况下比较治疗方案需要特定的统计方法,并根据患者人群、联合干预措施、结局测量指标及备选干预措施试验方法的差异程度,将证据级别降低1或2级。Gordon Guyatt Andrew D.Oxman Regina Kunz James Woodcock Jan Brozek Mark Helfand Pablo Alonso-Coello Yngve Falck-Ytter Roman Jaeschke Gunn Vist Elie A.Akl Piet N Post Susan Norris Joerg Meerpohl Mona Nasser 代表GRADE工作组 李幼平 杨晓妍 李鸿浩 2011中国循证医学杂志2011,11,12:30
3常规脂蛋白检测和载脂蛋白在心血管病预测中的比较显示文摘总胆固醇和高密度脂蛋白胆固醇(high density lipoprotein cholesterol,HDL-C)测量值对于心血管病风险评估至关重要,但对于其他脂质用于风险预测的效用一直存在争议。该研究纳入来自英国生物银行(Biobank)的无基线心血管病、未服用他汀类药物、有相关的脂质指标(n=346 686)的受试者。Welsh C Celis-Morales CA Brown R Mackay DF Lewsey J Mark PB Gray SR Ferguson LD Anderson JJ Lyall DM Cleland JG Jhund PS Gill J MR Pell JP Sattar N Welsh P 刘青(译) 叶鹏(摘、审校) 2019中华高血压杂志2019,27,7:10
4Efficacy of peroral endoscopic myotomy vs other achalasia treatments in improving esophageal function显示文摘AIM: To assess and compare the esophageal function after peroral endoscopic myotomy(POEM) vs other conventional treatments in achalasia.METHODS: Chart review of all achalasia patients who underwent POEM, laparoscopic Heller myotomy(LHM) or pneumatic dilation(PD) at our institution between January 2012 and March 2015 was performed. Patient demographics, type of achalasia, prior treatments, pre- and post-treatment timed barium swallow(TBE) and high-resolution esophageal manometry(HREM) findings were compared between the three treatment groups. Patients who had both pre- and 2 mo posttreatment TBE or HREM were included in the final analysis. TBE parameters compared were barium column height, width and volume of barium remaining at 1 and 5 min. HREM parameters compared were basal lower esophageal sphincter(LES) pressures and LES-integrated relaxation pressures(IRP). Data are presented as mean ± SD, median [25th, 75 th percentiles] or frequency(percent). Analysis of variance, KruskalWallis test, Pearsons χ~2 test and Fishers Exact tests were used for analysis.RESULTS: A total of 200 achalasia patients were included of which 36 underwent POEM, 22 underwent PD and 142 underwent LHM. POEM patients were older(55.4 ± 16.8 years vs 46.5 ± 15.7 years, P = 0.013) and had higher BMI than LHM(29.1 ± 5.9 kg/m^2 vs 26 ± 5.1 kg/m^2, P = 0.012). More number of patients in POEM and PD groups had undergone prior treatments compared to LHM group(72.2% vs 68.2% vs 44.3% respectively, P = 0.003). At 2 mo post-treatment, all TBE parameters including barium column height, width and volume remaining at 1 and 5 min improved significantly in all three treatment groups(P = 0.01 to P < 0.001) except the column height at 1 min in PD group(P = 0.11). At 2 mo post-treatment, there was significant improvement in basal LES pressure and LES-IRP in both LHM(40.5 mm Hg vs 14.5 mm Hg and 24 mm Hg vs 7.1 mm Hg respectively, P < 0.001) and POEM groups(38.7 mm Hg vs 11.4 mm Hg and 23.6 mm Hg vs 6.6 mm Hg respectively, P < 0.001). However, when the efficacy of three treatments were compared to each other in terms of improvement in TBE or HREM parameters at 2 mo, there was no significant difference(P > 0.05).CONCLUSION: POEM, PD and LHM were all effective in improving esophageal function in achalasia at shortterm. There was no difference in efficacy between the three treatments.Madhusudhan R Sanaka Umar Hayat Prashanthi N Thota Ramprasad Jegadeesan Monica Ray Scott L Gabbard Neha Wadhwa Rocio Lopez Mark E Baker Sudish Murthy Siva Raja 2016World Journal of Gastroenterology2016,22,20:7
5Update on Cardiovascular Implantable Electronic Device Infections and Their Management: A Scientific Statement From the American Heart Association显示文摘Larry M. Baddour Andrew E. Epstein Christopher C. Erickson Bradley P. Knight Matthew E. Levison Peter B. Lockhart Frederick A. Masoudi Eric J. Okum Walter R. Wilson Lee B. Beerman Ann F. Bolger N A. Mark Estes Michael Gewitz Jane W. Newburger Eleanor B. S 2010Circulation2010,,3:4
6Tribological performance of tributylmethylammonium bis(trifluoromethylsulfonyl)amide as neat lubricant and as an additive in a polar oil显示文摘The ionic liquid(IL) tributylmethylammonium bis(trifluoromethylsulfonyl)amide([N4441][NTf2]) was used as neat lubricant and as an additive(1.5 wt%) in a polar oil to study its friction and wear reducing properties.Tribological tests were completed for 90 minutes at room temperature and 100 °C in a reciprocating configuration at loads of 30 and 70 N,10 Hz-frequency,and 4 mm stroke length.Wear volume was measured by confocal microscopy and the surface-IL interaction determined by XPS.The main findings were that neat IL showed the best tribological behavior;the IL-containing mixture behaved similar to the base oil regarding friction,however outperformed the antiwear behavior of the base oil under higher temperature;surface-IL chemical interaction was found mainly at 100 °C.Rubén GONZáLEZ Diego RAMOS David BLANCO Alfonso FERNáNDEZ-GONZáLEZ Jose L.VIESCA Mark HADFIELD Antolin HERNáNDEZ BATTEZ 2019Friction2019,7,3:3
7Reuse of liver grafts following the brain death of the initial recipient显示文摘AIM: To determine if there is a reasonable prospect of success of a re-use liver transplantation.METHODS: We systematically searched for reports of liver graft re-use using electronic searches of PubMed and Web of Knowledge. We performed hand searches of references lists of articles reporting re-use of grafts.RESULTS: A systematic review of the literature reveals 28 liver transplantations using previously transplanted grafts. First and second recipients ranged in age from 4 to 72 years and 29 to 62 years respectively. Liver disease in the first recipient was varied including 5(18%) patients with fulminant liver failure who died subsequently of cerebral edema. The second transplanta-tion was performed after a median interval of 5 d(one day-13 years). Viral hepatitis was present in 3(11%) of the initial recipients and in 8(29%) of final recipients. Hepatocellular carcinoma was present in 6(21%) of the final recipients. Early survival after the final transplantation was 93%, whereas long-term survival was 78% with a mean follow-up of 23.3(3-120) mo.CONCLUSION: Outcomes of transplantation using previously transplanted grafts in this select population are similar to those seen with conventional grafts.Hideaki Tanaka Vivian C McAlister Mark A Levstik Cameron N Ghent Paul J Marotta Douglas Quan William J Wall 2014World Journal of Hepatology2014,6,6:3
8Androgen synthesis inhibitors in the treatment of castration-resistant prostate cancer显示文摘gonadal 睾丸激素合成的抑制首先代表标准为变形前列腺癌症的治疗的线治疗。在得阉割抵抗的前列腺癌症(CRPC ) 的病人的多数,然而,通过自己在肾上腺或在肿瘤以内生产的雄激素检测雄激素受体(AR ) 的坚持的激活是可能的。Abiraterone 醋酸盐作为 17 α 与活动作为双功能的细胞色素 P450 酶 CYP17 的一个不可逆的禁止者被开发; -hydroxylase 和 17,20-lyase。CYP17 为从胆固醇的 nongonadal 雄激素的生产是必要的。基于与 abiraterone 和泼尼松对泼尼松在全面幸存(OS ) 显示出重要改进的阶段 III 试用,在 2011 的 abiraterone 的规章的赞同代表了指向 AR 为与 CRPC 在人改进结果是必要的原则的证明。 17 α 的抑制;由 abiraterone 的 -hydroxylase 由于垂体的调停皮质醇的抑制的损失导致在上游的 mineralocorticoids 的累积促肾上腺皮质的荷尔蒙( ACTH ),为 17,20-lyase 为 CYP17 禁止者的开发向一个基本原理提供增加的特性( orteronel , galeterone 和 VT-464 )没有外长的 corticosteroids ,那能潜在地被管理。在这篇文章,我们考察 abiraterone 和另外的 CYP17 禁止者的发展;有 abiraterone 的最近的研究在 quality-of-life,反应的潜在的早预言者,并且关于另外的代理人的 abiraterone 的最佳的定序上通知我们的理解象药效果那样的临床的参数;并且提供卓见进抵抗机制给导致临床的试用,药联合设计了延长 abiraterone 利益或恢复 abiraterone 活动的 CYP17 禁止者的翻译研究结果。Mark N Stein 2014Asian Journal of Andrology2014,16,3:3
9The Neuroprotective Agent Memantine Induces Brain-Derived Neurotrophic Factor and trkB Receptor Expression in Rat Brain显示文摘Markéta Marvanová Merja Lakso Jarmo Pirhonen Hiroyoki Nawa Garry Wong Eero Castrén 2001Molecular and Cellular Neuroscience2001,,3:2
10大鼠中风模型的超小氧化铁粒子神经血管成像(英文)显示文摘现今诱导血管增生剂在中风后的治疗效应引起了人们的关注.这项工作的一个目的是用短时脑中动脉栓塞大鼠中风模型(MCAO)和磁化率加权成像(SWI)的核磁共振成像(MRI)方法,监测在中风后半月形损伤区新生成的旁侧血管.P904是法国格尔伯实验室生产的超小超顺磁氧化铁粒子弛豫试剂(USPIO).它在低剂量减少T1弛豫时间,适中剂量时减少T2*弛豫时间.实验动物被随机分为3组:中风Sildenafil治疗组(n=6)、中风无治疗对照组(n=5)和无中风无治疗对照组(n=1).在P904注入前后分别进行MRI成像.磁化率加权成像的时间点是:栓塞手术前、栓塞手术后24小时、栓塞手术后两周和四周.结果表明,术后两周,在治疗组中中风严重的动物的缺血区的周边显示了MRI可见的新生血管.结论:在短时脑中动脉栓塞大鼠中风模型中,使用超小超顺磁氧化铁粒子弛豫试剂和7 T高分辨磁化率加权成像能够监测半月形损伤区新生血管的形成.沈伊民 郑伟丽 CHENG Yu-Chung N 丁玉川 HIGASHIDA Tetsuhiro 李杰 叶永泉 RAYNAUD Jean-Sebastien HAACKE E Mark 2014波谱学杂志2014,31,1:2
11抑郁症的非药物治疗:系统性综述与证据图显示文摘背景抑郁症非药物治疗的疗效比较目前仍然不清楚。方法我们对一些系统性综述作了概述,回顾了随机对照试验(RCT),比较抑郁症非药物治疗的有效性和认知行为治疗(CBT)。对多个电子数据库在2016年2月之前发表的所有文献进行了检索,不限制语言。成对的评阅人进行资料纳入、数据提炼并评估偏倚的风险。在适用的时候进行了荟萃分析。结果我们收录了367项RCT,纳入了约2000名患者,进行了11种治疗,导出17项独立的头对头比较。通过标准化的量表评估,发现CBT、自然疗法、行为干预与躯体活动干预可以降低抑郁的严重程度。然而,这些非药物干预的相对疗效仍然缺乏。这些干预对临床缓解和复发的效果不清楚。CBT的发生率比抗抑郁药物更低。局限性由于证据缺乏一致性、证据不清或偏倚风险高,导致证据的质量只是低到中等,限制了我们研究结果的可信度。结论抑郁症的非药物治疗能减少抑郁症状,在轻度到重度抑郁症患者中,应当合并抗抑郁药物治疗,一同进行。对于非药物治疗的选择,应当根据患者的价值观、偏好、临床和社会因素来与患者共同作出决定。Wigdan H Farah Mouaz Alsawas Maria Mainou Fares Alahdab Magdoleen H Farah Ahmed T Ahmed Essa A Mohamed Jehad Almasri Michael R Gionfriddo Ana Castaneda-Guarderas Khaled Mohammed Zhen Wang Noor Asi Craig N Sawchuk Mark D Williams Larry J Prokop M Hassan Murad Annie LeBlanc 2017英国医学杂志中文版2017,20,11:2
12Androgen deprivation therapy for prostate cancer: not so simple显示文摘Nicholas N Tadros Mark Garzotto 2011Asian Journal of Andrology2011,13,2:2
13Causes of encephalitis and differences in their clinical presentations in England: a multicentre, population-based prospective study显示文摘Julia Granerod Helen E Ambrose Nicholas WS Davies Jonathan P Clewley Amanda L Walsh Dilys Morgan Richard Cunningham Mark Zuckerman Ken J Mutton Tom Solomon Katherine N Ward Michael PT Lunn Sarosh R Irani Angela Vincent David WG Brown Natasha S Crowcroft 2010The Lancet Infectious Diseases2010,,12:2
14无心血管病者尿钠排泄、血压与未来心血管病及死亡风险显示文摘高血压是心血管病的危险因素。代表膳食钠摄入的尿钠排泄增加与血压相关。但在一些观察性研究中,低钠摄入与死亡率增加相关。进一步研究应评估混杂相关性是否能解释钠摄入与预后的关系。研究者分析英国生物银行参加者(n=457484,平均年龄56.3岁,44.7%为男性)尿电解质与血压的数据。采用Kawasaki公式估算每日尿钠排泄量。研究者分析基线无心血管病、治疗的高血压或糖尿病者(n=322624)钠排泄与血压的关系,并评估钠排泄与致死性及非致死性心血管病、心力衰竭及死亡发生率的关系。Welsh CE Welsh P Jhund P Delles C Celis-Morales C Lewsey JD Gray S Lyall D Iliodromiti S Gill JMR Sattar N Mark PB 赵狄 练桂丽 2019中华高血压杂志2019,27,6:2
15Gastroesophageal reflux disease after diagnostic endoscopy in the clinical setting显示文摘AIM: To investigate the outcome of patients with symptoms of gastroesophageal reflux disease (GERD) referred for endoscopy at 2 and 6 mo post endoscopy. METHODS: Consecutive patients referred for upper endoscopy for assessment of GERD symptoms at two large metropolitan hospitals were invited to participate in a 6-mo non-interventional (observational) study.The two institutions are situated in geographically and socially disparate areas. Data collection was by selfcompletion of questionnaires including the patient assessment of upper gastrointestinal disorders symptoms severity and from hospital records. Endoscopic finding using the Los-Angeles classification, symptom severity and it's clinically relevant improvement as change of at least 25%, therapy and socio-demographic factors were assessed. RESULTS: Baseline data were available for 266 patients and 2-mo and 6-mo follow-up data for 128 and 108 patients respectively. At baseline, 128 patients had erosive and 138 non-erosive reflux disease. Allmost all patient had proton pump inhibitor (PPI) therapy in the past. Overall, patients with non-erosive GERD at the index endoscopy had significantly more severe symptoms as compared to patients with erosive or even complicated GERD while there was no difference with regard to medication. After 2 and 6 mo there was a small, but statistically significant improvement in symptom severity (7.02 ± 5.5 vs 5.9 ± 5.4 and 5.5 ± 5.4 respectively); however, the majority of patients continued to have symptoms (i.e. , after 6 mo 81% with GERD symptoms). Advantaged socioeconomic status as well as being unemployed was associated with greater improvement. CONCLUSION: The majority of GORD patients receive PPI therapy before being referred for endoscopy even though many have symptoms that do not sufficiently respond to PPI therapy.Nora B Zschau Jane M Andrews Richard H Holloway Mark N Schoeman Kylie Lange William CE Tam Gerald J Holtmann 2013World Journal of Gastroenterology2013,19,16:2
16Quantitative 1H magnetie resonance speetroscopy and MRI of Parkinson's disease显示文摘O'Neill J Sehuff N Marks WJ Jr 2002Mov Disord2002,17,5:1
17Opal and inverse opal photonic crystals: Fabrication and characterization 显示文摘Geoffrey I N Waterhouse Mark R Waterland 2007Polyhedron2007,26,:1
18The international transmission of real business cycle显示文摘Cantor R Mark N C 1988International Economic Review1988,29,3:1
19Computer-simulated evaluation of possible mechanism for quenching heavy metal ion activity in plant vacuoles显示文摘Wang J Bill P E Mark T N 1991Plant Physiology1991,97,:1
20Failure of primary per- cutaneous angioplasty and stenting in the prevention of ischemia in Moyamoya angiopathy 显示文摘Khan N Dodd R Marks MP 2011Cerebrovasc Dis2011,31,2:1
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