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285篇 您的检索式:作者名="Dan R"
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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
25-Hydroxymethylcytosine signatures in cell-free DNA provide information about tumor types and stages显示文摘5-Hydroxymethylcytosine (5hmC ) 是被连接了到基因规定和癌症致病的重要哺乳动物的 DNA epigenetic 修正。这里,我们用定序途径的一枝敏感化学基于标签的低输入的猎枪在传播没有房间的 DNA (cfDNA ) 探索了 5hmC 的诊断潜力。我们从七种不同癌症类型的 49 个病人定序没有房间的 5hmC 并且发现了能被用来与高精确性预言癌症类型和阶段的不同特征。明确地,我们发现肺癌症在 cfDNA 导致 5hmC 的进步全球损失,而 hepatocellular 癌和胰腺的癌症在没有房间的 hydroxymethylome 导致疾病特定的变化。我们的 proof-of-principle 结果建议没有房间的 5hmC 签名可以潜在地被使用不仅识别癌症类型而且在一些癌症追踪肿瘤舞台。Chun-Xiao Song Senlin Yin Li Ma Amanda Wheeler Yu Chen Yan Zhang Bin Liu Junjie Xiong Weihan Zhang Jiankun Hu Zongguang Zhou Biao Dong Zhiqi Tian Stefanie S Jeffrey Mei-Sze Chua Samuel So Weimin Li Yuquan Wei Jiajie Diao Dan Xie Stephen R Quake 2017Cell Research2017,27,10:17
3Advances in endoscopic ultrasound imaging of colorectaldiseases显示文摘The development of endoscopic ultrasound(EUS) has had a significant impact for patients with digestive diseases, enabling enhanced diagnostic and therapeutic procedures, with most of the available evidence focusing on upper gastrointestinal(GI) and pancreaticobiliary diseases. For the lower GI tract the main application of EUS has been in staging rectal cancer, as a complementary technique to other cross-sectional imaging methods. EUS can provide highly accurate indepth assessments of tumour infiltration, performing best in the diagnosis of early rectal tumours. In the light of recent developments other EUS applications for colorectal diseases have been also envisaged and are currently under investigation, including beyond-rectum tumour staging by means of the newly developed forward-viewing radial array echoendoscope. Due to its high resolution, EUS might be also regarded as an ideal method for the evaluation of subepithelial lesions. Their differential diagnosis is possible by imaging the originating wall layer and the associated echostructure, and cytological and histological confirmation can be obtained through EUS-guided fine needle aspiration or trucut biopsy. However, reports on the use of EUS in colorectal subepithelial lesions are currently limited. EUS allows detailed examination of perirectal and perianal complications in Crohn's disease and, as a safe and less expensive investigation, can be used to monitor therapeutic response of fistulae, which seems to improve outcomes and reduce the need for additional surgery. Furthermore, EUS image enhancement techniques, such as the use of contrast agents or elastography, have recently been evaluated for colorectal indications as well. Possible applications of contrast enhancement include the assessment of tumour angiogenesis in colorectal cancer, the monitoring of disease activity in inflammatory bowel disease based on quantification of bowel wall vascularization, and differentiating between benign and malignant subepithelial tumours. Recent reports suggest that EUS elastography enables highly accurate discrimination of colorectal adenocarcinomas from adenomas, while inflammatory bowel disease phenotypes can be distinguished based on the strain ratio calculation. Among EUS-guided therapies, the drainage of abdominal and pelvic collections has been regarded as a safe and effective procedure to be used as an alternative for the transcutaneous route, while the placing of fiducial markers under EUS guidance for targeted radiotherapy in rectal cancer or the use of contrast microbubbles as drug-delivery vehicles represent experimental therapeutic applications that could greatly impact the forthcoming management of patients with colorectal diseases, pending on further investigations.Elena Tatiana Cârțână Dan IonuțGheonea Adrian Săftoiu 2016World Journal of Gastroenterology2016,22,5:14
4Phase angle obtained by bioelectrical impedance analysis independently predicts mortality in patients with cirrhosis显示文摘AIM To evaluate the prognostic value of the phase angle(PA)obtained from bioelectrical impedance analysis(BIA) for mortality prediction in patients with cirrhosis. METHODS In total, 134 male cirrhotic patients prospectively completed clinical evaluations and nutritional assessment by BIA to obtain PAs during a 36-mo follow-up period. Mortality risk was analyzed by applying the PA cutoff point recently proposed as a malnutrition marker(PA ≤ 4.9°) in Kaplan-Meier curves and multivariate Cox regression models. RESULTS The patients were divided into two groups according to the PA cutoff value(PA > 4.9°, n = 73; PA ≤ 4.9°, n = 61). Weight, height, and body mass index were similar in both groups, but patients with PAs > 4.9° were younger and had higher mid-arm muscle circumference, albumin, and handgrip-strength values and lower severe ascites and encephalopathy incidences, interleukin(IL)-6/IL-10 ratios and C-reactive protein levels than did patients with PAs ≤ 4.9°(P ≤ 0.05). Forty-eight(35.80%) patients died due to cirrhosis, with a median of 18 mo(interquartile range, 3.3-25.6 mo) follow-up until death. Thirty-one(64.60%) of these patients were from the PA ≤ 4.9° group. PA ≤ 4.9° significantly and independently affected the mortality model adjusted for Model for End-Stage Liver Disease score and age(hazard ratio = 2.05, 95%CI: 1.11-3.77, P = 0.021). In addition, Kaplan-Meier curves showed that patients with PAs ≤ 4.9° were significantly more likely to die. CONCLUSION In male patients with cirrhosis, the PA ≤ 4.9° cutoff was associated independently with mortality and identified patients with worse metabolic, nutritional, and disease progression profiles. The PA may be a useful and reliable bedside tool to evaluate prognosis in cirrhosis.Giliane Belarmino Maria Cristina Gonzalez Raquel S Torrinhas Priscila Sala Wellington Andraus Luiz Augusto Carneiro D'Albuquerque Rosa Maria R Pereira Valéria F Caparbo Graziela R Ravacci Lucas Damiani Steven B Heymsfield Dan L Waitzberg 2017World Journal of Hepatology2017,9,7:11
5基于DRNN神经网络的PD混合控制技术在船舶动力定位系统中的应用显示文摘船舶在海上运动是一种复杂的非线性运动,其水动力系数很难精确确定,而海洋环境的随机干扰因素也在不断地发生变化,因此需要研究具有鲁棒性和自适应能力的船舶动力定位控制技术。P ID控制在优化参数的条件下,对于能够建立精确数学模型的确定性系统具有鲁棒性好和可靠性高的特点,但对于船舶运动这样复杂的非线性系统其控制效果不理想,而神经网络具有自学习和自适应能力,因此需要结合两者的特点,设计自适应能力强、鲁棒性好的控制技术。本文研究了基于DRNN神经网络的PD混合控制技术,并将其应用到船舶动力定位系统。仿真结果表明该方法有效,且具有较好的鲁棒性和自适应能力,提高了动力定位系统的精度和性能。夏国清 Corbett Dan R 2006中国造船2006,47,1:10
6Confocal laser endomicroscopy and immunoendoscopy for real-time assessment of vascularization in gastrointestinal malignancies显示文摘Gastrointestinal cancers represent a major cause of morbidity and mortality,with incomplete response to chemotherapy in the advanced stages and poor prognosis.Angiogenesis plays a crucial part in tumor growth and metastasis,with most gastrointestinal cancers depending strictly on the development of a new and devoted capillary network.Confocal laser endomicroscopy is a new technology which allows in vivo microscopic analysis of the gastrointestinal mucosa and its microvascularization during ongoing endoscopy by using topically or systemically administered contrast agents.Targeting markers of angiogenesis in association with confocal laser endomicroscopic examination(immunoendoscopy),as a future challenge,will add functional analysis to the morphological aspect of the neoplastic process.This review describes previous experience in endomicroscopic examination of the upper and lower digestive tract with emphasis on vascularization,resulting in a broad spectrum of potential clinical applications,and also preclinical research that could be translated to human studies.Dan Ionut Gheonea Tatiana Crtnǎ Tudorel Ciurea Carmen Popescu Anca Bǎdǎrǎu Adrian Sǎftoiu 2011World Journal of Gastroenterology2011,17,1:6
7肱骨干骨折——髓内钉与钢板固定的比较显示文摘总体而言,这些报道提示:采用髓内钉治疗肱骨干骨折较采用钢板带来更多的并发症,尤其是采用顺行入路。同时,这些报道没有提供确切的证据证明何种方法在骨折愈合、减少感染或上肢总体功能上优于另一种。Mohid Bhandari Joseph R Beate P.Hanson Dan C. Norvell 陈国奋 顾立强 2004中华创伤骨科杂志2004,6,6:4
8Recent advances in the diagnostic evaluation of pancreatic cystic lesions显示文摘Pancreatic cystic lesions(PCLs)are becoming more prevalent due to more frequent abdominal imaging and the increasing age of the general population.It has become crucial to identify these PCLs and subsequently risk stratify them to guide management.Given the high morbidity associated with pancreatic surgery,only those PCLs at high risk for malignancy should undergo such treatment.However,current diagnostic testing is suboptimal at accurately diagnosing and risk stratifying PCLs.Therefore,research has focused on developing new techniques for differentiating mucinous from non-mucinous PCLs and identifying high risk lesions for malignancy.Cross sectional imaging radiomics can potentially improve the predictive accuracy of primary risk stratification of PCLs at the time of detection to guide invasive testing.While cyst fluid glucose has reemerged as a potential biomarker,cyst fluid molecular markers have improved accuracy for identifying specific types of PCLs.Endoscopic ultrasound guided approaches such as confocal laser endomicroscopy and through the needle microforceps biopsy have shown a good correlation with histopathological findings and are evolving techniques for identifying and risk stratifying PCLs.While most of these recent diagnostics are only practiced at selective tertiary care centers,they hold a promise that management of PCLs will only get better in the future.Devarshi R Ardeshna Troy Cao Brandon Rodgers Chidiebere Onongaya Dan Jones Wei Chen Eugene J Koay Somashekar G Krishna 2022World Journal of Gastroenterology2022,28,6:3
9多重结局的多元Meta分析和多重治疗的网状Meta分析:原理、概念及实例显示文摘英国国家健康与临床优选研究所(NICE)等组织需要对现有研究获得的证据进行整合来指导决策,需要确定关于多重疗效及安全性结局的最佳治疗。但是,相关的研究不一定对所有关注的治疗或结局都进行了直接比较,多元Meta分析及网状Meta分析为如何确定最佳治疗这一问题提供了思路,该方法不仅考虑了直接证据,还利用了关联或间接的证据。本文中,研究者描述了这些方法学的重要概念及假设,并阐述关联及间接证据如何产生,同时通过图表说明这些证据在涉及多重结局和多重治疗的真实临床案例中如何使用。Richard D Riley Dan Jackson Georgia Salanti Danielle L Burke Malcolm Price Jamie Kirkham Ian R White 孙至佳(译) 张岩(译) 刘雪晴(译) 杨智荣(校) 孙凤(校) 2018英国医学杂志中文版2018,21,12:2
10Large cystic lesions of the liver in adults: a 15-year experience in a tertiary center 1 1 No competing interests declared.显示文摘Arie Regev K.Rajender Reddy Mariana Berho Dan Sleeman Joe U Levi Alan S Livingstone David Levi Unzila Ali Enrique G Molina Eugene R Schiff 2001Journal of the American College of Surgeons2001,,1:2
11Utility of B-type natriuretic peptide in the diagnosis of congestive heart failure in an urgent-care setting 显示文摘Dan O Krishnaswamy P Kazanegra R 2001J Am Coll Cardiol2001,37,2:1
12An Automated Method for Analysis of Flow Characteristics of Circulating Particles From In vivo Video Microscopy 显示文摘Dan E Dan W Michael R 2008IEEE Transactions on Biomedical Engineering2008,55,1:1
13Determination of Chemical Oxygen Demand in Fresh Waters Using Flow Injection With On-line UV-photocatalytic Oxidation and Spectrophotometric Detection显示文摘DAN De-zhong SANDFORD R C WORSFOLD P J 2005The Analyst2005,130,2:1
14Cross - entropy meas- ure of uncertain variables 显示文摘CHEN X W KAR S DAN A R 2012Information Sciences2012,,201:1
15CEO duality and organizational performance :a longitudinal analysis 显示文摘Rechner Panla L: Dalton Dan R 1991Strategic Management Journal1991,1,2:1
16A Gradient Study of 34 Elements in the Vicinity of a Copper-Nickel Smelter in the Kola Peninsula显示文摘Eiliv Steinnes Natalia Lukina Vyacheslav Nikonov Dan Aamlid Oddvar R?yset 2000Environmental Monitoring and Assessment2000,,1:1
17Whole genome sequencing of Ethiopian highlanders reveals conserved hypoxia tolerance genes 显示文摘Nitin U Roy R Dan Z 2014Genome Biology2014,15,2:1
18Axiomatic Justification of Stable Equilibria显示文摘S GOVIN DAN and R WILSON 2006Econometrica2006,,:1
19The differentiation of human TH-17cells requires transforming growth factor-βand induction of the nuclear receptor RORγT显示文摘Nicolas Manel Derya Unutmaz Dan R 2008Nat Immunol2008,9,6:1
20Computational and experimental characterization of physically clustered simple sequence repeats in plants 显示文摘Linda C Luke R Dan M 2000Genetics2000,156,2:1
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