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1028篇 您的检索式:作者名="DONALD R"
    题名 作者 年代 出处 被引量
1Fecal microbiota transplantation as novel therapy in gastroenterology:A systematic review显示文摘AIM:To study the clinical efficacy and safety of Fecal microbiota transplantation(FMT).We systematically reviewed FMT used as clinical therapy.METHODS:We searched MEDLINE,EMBASE,the Cochrane Library and Conference proceedings from inception to July,2013.Treatment effect of FMT was calculated as the percentage of patients who achieved clinical improvement per patient category,on an intention-to-treat basis.RESULTS:We included 45 studies;34 on Clostridium difficile-infection(CDI),7 on inflammatory bowel disease,1 on metabolic syndrome,1 on constipation,1 on pouchitis and 1 on irritable bowel syndrome(IBS).In CDI 90% resolution of diarrhea in 33 case series(n = 867) was reported,and 94% resolution of diarrhea after repeated FMT in a randomized controlled trial(RCT)(n = 16).In ulcerative colitis(UC) remission rates of 0% to 68% were found(n = 106).In Crohn's disease(CD)(n = 6),no benefit was observed.In IBS,70% improvement of symptoms was found(n = 13).100% Reversal of symptoms was observed in constipation(n = 3).In pouchitis,none of the patients(n = 8) achieved remission.One RCT showed significant improvement of insulin sensitivity in metabolic syndrome(n = 10).Serious adverse events were rare.CONCLUSION:FMT is highly effective in CDI,and holds promise in UC.As for CD,chronic constipation,pouchitis and IBS data are too limited to draw conclusions.FMT increases insulin sensitivity in metabolic syndrome.Noortje G Rossen John K Mac Donald Elisabeth M de Vries Geert R D'Haens Willem M de Vos Erwin G Zoetendal Cyriel Y Ponsioen 2015World Journal of Gastroenterology2015,21,17:41
2近年来珠三角地区大气中痕量氟氯烃(CFCs)的浓度水平与变化特征显示文摘用预浓缩-GC/MS方法研究了珠江三角洲大气中的CCl3F、CFC-12、CFC-113和CFC-114等4种痕量氟氯烷烃气体。结果表明,2005年珠江三角洲背景点鼎湖山大气中CFC-12和CFC-11的年平均浓度高于全球本底站,说明珠三角地区还存在一定CFC-11和CFC-12的排放源;CFC-113浓度水平则与全球本底站点浓度接近,且CFC-113和CFC-114在广州城区与鼎湖山差别不显著,表明区内其排放源强度应很小。观测日内广州和鼎湖山大气中四种CFCs的日变化幅度均较小,无明显的昼夜变化规律。广州市CFCs总体呈夏秋高、冬春低的特征,与城区致冷设备高温季节使用频率较大有关;鼎湖山则呈冬春高、夏秋低的特征,主要受扩散作用和季风的影响。初步分析显示,从1997年到2005年,CFC-11、CFC-12和CFC-114浓度总体呈现先上升后缓慢降低的趋势,而CFC-113的浓度一直逐年下降。张芳 王新明 李龙凤 易志刚 周凌晞 Donald R Blake 盛国英 傅家谟 2006地球与环境2006,34,4:11
3Role of polyethylene particles in peri-prosthetic osteolysis:A review显示文摘There is convincing evidence that particles produced by the wear of joint prostheses are causal in the periprosthetic loss of bone,or osteolysis,which,if it progresses,leads to the phenomenon of aseptic loosening.It is important to fully understand the biology of this bone loss because it threatens prosthesis survival,and loosened implants can result in peri-prosthetic fracture,which is disastrous for the patient and presents a difficult surgical scenario.The focus of this review is the bioactivity of polyethylene(PE)particles,since there is evidence that these are major players in the development and progression of osteolysis around prostheses which use PE as the bearing surface.The review describes the biological consequences of interaction of PE particles with macrophages,osteoclasts and cells of the osteoblast lineage,including osteocytes.It explores the possible cellular mechanisms of action of PE and seeks to use the findings to date to propose potential nonsurgical treatments for osteolysis.In particular,a nonsurgical approach is likely to be applicable to implants containing newer,highly cross-linked PEs(HXLPEs),for which osteolysis seems to occur with much reduced PE wear compared with conventional PEs.The caveat here is that we know little as yet about the bioactivity of HXLPE particles and addressing this constitutes our next challenge.Gerald J Atkins David R Haynes Donald W Howie David M Findlay 2011World Journal of Orthopedics2011,2,10:11
4循证医学论争的哲学分析(上)显示文摘首先 ,我们认为EBM的支持者对EBM的定义过于宽泛 ,甚至是空洞的 ,这正是当前的有关讨论不明朗的原因 ;对此我们提出了一种更明晰的解释 ,重新阐述EBM的含义及与其他医学方法的关系。第二 ,EBM的支持者通常依据ThomasKuhn的哲学著作来说明EBM是一种Kuhn式的“范式转化” ;我们认为 ,这种说明是一种严重的错误 ,并且使有关EBM的争论过度的偏离常轨。第三 ,我们建议以W .V .Quine的信仰之网的哲学观念来理解EBM及其与其他医学方法的关系 ,这是一种更富有成果的理解方式。基于这种理解 。Scott R Sehon Donald E Stanley 韩鹏 程伟 2004医学与哲学2004,25,2:9
5Acute inflammatory demyelinating polyneuropathy associated with pegylated interferon α 2a therapy for chronic hepatitis C virus infection显示文摘The combination of pegylated interferon (Peg-IFN) and ribavirin is the standard of care for chronic hepatitis C virus (HCV) infection treatment. In general, common side effects related to this combination therapy are mild and are very well tolerated. However, peripheral neuropathy including demyelinating polyneuropathy related to Peg-IFN is extremely rare. We present the first case of an acute inflammatory demyelinating polyneuropathy (AIDP) associated with Peg-IFN-α 2a (Pegasys) after 16 wk of a combination therapy with Pegasys and ribavirin in a 65-year-old woman with chronic HCV infection. She developed tingling, numbness, and weakness of her upper and lower extremities and was hospitalized for acute neurological deficits. Her clinical course, neurological findings, an electromyogram (EMG), nerve conductions studies (NCS), muscle biopsy, and a sural nerve biopsy were all consistent with AIDP likely related to Pegasys use. The patient recovered completely with the use of intravenous immunoglobulin (IVIG) including physical therapy and neurological rehabilitation. It is very important that gastroenterologists and/or hepatologists recognize this rare neurological complication related to Peg-IFN treatment very early, since it requires a prompt discontinuation of therapy including an immediate referral to a neurologist for the confirmation of diagnosis, management, and the prevention of long-term neurological deficits.Vijay Khiani Thomas Kelly Adeel Shibli Donald Jensen Smruti R Mohanty 2008World Journal of Gastroenterology2008,14,2:7
6Hematopoietic stem cell-derived adipocytes and fibroblasts in the tumor microenvironment显示文摘The tumor microenvironment(TME) is complex and constantly evolving. This is due, in part, to the crosstalk between tumor cells and the multiple cell types that comprise the TME, which results in a heterogeneous population of tumor cells and TME cells. This review will focus on two stromal cell types, the cancerassociated adipocyte(CAA) and the cancer-associated fibroblast(CAF). In the clinic, the presence of CAAs and CAFs in the TME translates to poor prognosis in multiple tumor types. CAAs and CAFs have an activated phenotype and produce growth factors, inflammatory factors, cytokines, chemokines, extracellular matrix components, and proteases in an accelerated and aberrant fashion. Through this activated state, CAAs and CAFs remodel the TME, thereby driving all aspects of tumor progression, including tumor growth and survival, chemoresistance, tumor vascularization, tumor invasion, and tumor cell metastasis. Similarities in the tumorpromoting functions of CAAs and CAFs suggest that a multipronged therapeutic approach may be necessary to achieve maximal impact on disease. While CAAs and CAFs are thought to arise from tissues adjacent to the tumor, multiple alternative origins for CAAs and CAFs have recently been identified. Recent studies from our lab and others suggest that the hematopoietic stem cell, through the myeloid lineage, may serve as a progenitor for CAAs and CAFs. We hypothesize that the multiple origins of CAAs and CAFs may contribute to the heterogeneity seen in the TME. Thus, a better understanding of the origin of CAAs and CAFs, how this origin impacts their functions in the TME, and thetemporal participation of uniquely originating TME cells may lead to novel or improved anti-tumor therapeutics.Ying Xiong Lindsay T Mc Donald Dayvia L Russell Ryan R Kelly Katie R Wilson Meenal Mehrotra Adam C Soloff Amanda C LaRue 2015World Journal of Stem Cells2015,7,2:6
7ABCD^(2) risk score does not predict the presence of cerebral microemboli in patients with hyper-acute symptomatic critical carotid artery stenosis显示文摘Introduction:ABCD^(2) risk score and cerebral microemboli detected by transcranial Doppler(TCD)have been separately shown to the predict risk of recurrent acute stroke.We studied whether ABCD2 risk score predicts cerebral microemboli in patients with hyper-acute symptomatic carotid artery stenosis.Participants and methods:We studied 206 patients presenting within 2 weeks of transient ischaemic attack or minor stroke and found to have critical carotid artery stenosis(≥50% ).86 patients(age 70±1(SEM:years),58 men,83 Caucasian)had evidence of microemboli;72(84% )of these underwent carotid endarterectomy(CEA).120 patients(age 72±1 years,91 men,113 Caucasian)did not have microemboli detected;102(85% )of these underwent CEA.Data were analysed using X2 and Mann–Whitney U tests and receiver operating characteristic(ROC)curves.Results:140/206(68% :95% CI 61.63 to 74.37)patients with hyper-acute symptomatic critical carotid stenosis had an ABCD2 risk score≥4.There was no significant difference in the NICE red flag criterion for early assessment(ABCD^(2) risk score≥4)for patients with cerebral microemboli versus those without microemboli(59/86 vs 81/120 patients:OR 1.05 ABCD2 risk score≥4(95% CI 0.58 to 1.90,p=0.867)).The ABCD2 risk score was<4 in 27 of 86(31% :95% CI 21 to 41)embolising patients and in 39 of 120(31% :95% CI 23 to 39)without cerebral microemboli.After adjusting for pre-neurological event antiplatelet treatment(APT),area under the curve(AUC)of ROC for ABCD2 risk score showed no prediction of cerebral microemboli(no pre-event APT,n=57:AUC 0.45(95% CI 0.29 to 0.60,p=0.531);preevent APT,n=147:AUC 0.51(95% CI 0.42 to 0.60,p=0.804)).Conclusions:The ABCD2 score did not predict the presence of cerebral microemboli or carotid disease in over one-quarter of patients with symptomatic critical carotid artery stenosis.On the basis of NICE guidelines(refer early if ABCD2≥4),assessment of high stroke risk based on ABCD2 scoring may lead to inappropriate delay in urgent treatment in many patients.Mahmud Saedon Charles E Hutchinson Christopher H E Imray Donald R J Singer 2017Stroke & Vascular Neurology2017,2,2:6
8循证医学论争的哲学分析(下)显示文摘Scott R Sehon Donald E Stanley 韩鹏 程伟 2004医学与哲学2004,25,3:5
9Sentinel-lymph-node resection compared with conventional axillary-lymph-node dissection in clinically node-negative patients with breast cancer: overall survival findings from the NSABP B-32 randomised phase 3 trial显示文摘David N Krag Stewart J Anderson Thomas B Julian Ann M Brown Seth P Harlow Joseph P Costantino Takamaru Ashikaga Donald L Weaver Eleftherios P Mamounas Lynne M Jalovec Thomas G Frazier R Dirk Noyes André Robidoux Hugh MC Scarth Norman Wolmark 2010Lancet Oncology2010,,10:3
10Mosquito larvicidal properties of Orthosiphon thymiflorus(Roth)Sleesen.(Family:Labiatae)against mosquito vectors,Anopheles stephensi,Culex quinquefasciatus and Aedes aegypti(Diptera:Culicidae)显示文摘Objective:To determine the mosquito larvicidal activities of hexane,chloroform,ethyl acetate, acetone and methanol leaf extract of Orthosiphon thymiflorus(O.thymiflorus) against Anopheles stephensi(An.stephensi),Culex quinquefasciatus(Cx.quinquefasciatus) and Aedes aegypti (Ae.aegypti).Methods:The larvicidal activity was assayed against three mosquito species at various concentrations ranging from(50-450 ppm) under the laboratory conditions.The LC50 and LC90value of the O.thymiflorus leaf extract was determined by Probit analysis.Results:The LC50 values of hexane,chloroform,ethyl acetate,acetone and methanol extract of O.thymiflorus third instar larvae of An.stephensi were LC50= 201.39,178.76,158.06,139.22 and 118.74 ppm; Cx.quinquefasciatus were LC50=228.13,209.72.183.35,163.55 and 149.96 ppm and Ae.aegypti were LC50=215.65,197.91,175.05,154.80 and 137.26 ppm,respectively.Maximum larvicidal activity was observed in the methanolic extract followed by acetone,ethyl acetate chloroform and hexane extract.The larval mortality was observed after 24 h exposure.No mortality was observed in control.Conclusions:The present results suggest that the effective plant crude extracts have potential to be used as an ideal eco-friendly approach for the control of mosquito vectors.This study provides the first report on the larvicidal activity of this plant crude solvent extract of against An.stephensi,Cx.quinquefasciatus and Ae.aegypti mosquitoes.K Kovendan K Murugan S Vincent Donald R Barnard 2012Asian Pacific Journal of Tropical Medicine2012,5,4:2
11双能X线摄影吸收法的骨密度测定:现状和展望显示文摘骨矿分析无论对骨质疏松或其他代谢性骨病的诊治都起重要的作用。但是,近来骨密度测量的观念尤其在用于骨质疏松普查方面正面临内科界的挑战,部份原因是现有检查方法自身的缺陷所致。目前最多采用的检查有单光子吸收法(SPA)、双光子吸收法(DPA)和定量CT(QCT)。一些作者发现,SPA对桡骨远端和跟骨的骨矿含量测定与脊柱和髋部的测定相关性不明显,而后两者是骨量减少状态下发生骨折的主要部位。QCT则如不做复杂的数据处理只能测量脊柱,欲做其他研究需有昂贵的设备,且照射量大。此外还因骨髓内存在不定量的脂肪易致测量误差(单能)。DPA测量的是脊柱或髋部之皮、髓质总和,测量精度欠佳且图象空间分辨率差、需定期更换昂贵的放射源、检查费时。为解决上述问题。David JS Donald R 吴春营 1989国外医学(临床放射学分册)1989,,5:2
12T cell responses to allogeneic human mesenchymal stem cells: immunogenicity, tolerance, and suppression显示文摘Elena Klyushnenkova Joseph D Mosca Valentina Zernetkina Manas K Majumdar Kirstin J Beggs Donald W Simonetti Robert J Deans Kevin R McIntosh 2005Journal of Biomedical Science2005,,1:2
13Aquaporins and brain edema显示文摘Donald E.G Griesdale Christopher R Honey 2004Surgical Neurology2004,,:2
142009年南极冰穹A的双色天光背景统计和分析显示文摘天光背景是天文台址的一个重要指标。利用2009年位于南极冰穹A的CSTAR望远镜两个波段的观测数据,对南极冰穹A的天光背景进行了统计和分析。结果表明约74%的g波段天光背景的ADU值小于每像素100/s;90.5%的r波段的天光背景的ADU值小于每像素100/s。在不考虑大气消光的情况下,定标后的结果为2009年冰穹A的观测数据中天光背景亮度的中值:g波段为19.9 mag/arcsec2,r波段为20.1 mag/arcsec2。宗伟凯 付建宁 牛家树 Ashley Michael C B 宫雪非 Lawrence J S 刘强 Luong-Van Daniel Pennypacker C R Storey John W V 王灵芝 王力帆 杨惠根 袁祥岩 York Donald G 朱镇熹 2014天文研究与技术2014,11,1:2
15Technical outcomes of sentinel-lymph-node resection and conventional axillary-lymph-node dissection in patients with clinically node-negative breast cancer: results from the NSABP B-32 randomised phase III trial显示文摘David N Krag Stewart J Anderson Thomas B Julian Ann M Brown Seth P Harlow Takamaru Ashikaga Donald L Weaver Barbara J Miller Lynne M Jalovec Thomas G Frazier R Dirk Noyes André Robidoux Hugh MC Scarth Denise M Mammolito David R McCready Eleftherios P Mamo 2007Lancet Oncology2007,,10:2
16Gray-scale masks for diffractive-optics fabrication:Ⅱ Spatially filtered halftone screens 显示文摘DONALD C O WILLIE S R 1995Appl Opt1995,34,32:2
17The influence of sediment recycling and basement composition on evolution of mudrock chemistry in the southwestern United States显示文摘Rónald Cox Donald R. Lowe R.L. Cullers 1995Geochimica et Cosmochimica Acta1995,,14:2
18The effects of timing jitter in sampling systems显示文摘Souders T M Donald R F Charles Hagwood 1990IEEE Transactions on Instrumentation and Measurement1990,39,1:1
19Transfection of Bifidobacterium longum with pRM2, a constructed Escherichia coli-Bifidobacteria longum shuttle vector 显示文摘Missich R Sgorbati B Donald JL 1994Plasmid1994,32,2:1
20Heat shock response by the hyperthermophilic archaeon Pyrococcus furiosus显示文摘 Donald E Swapnil R 2003Applied and Environmental Microbiology2003,69,4:1
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