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684篇 您的检索式:作者名="Roels"
    题名 作者 年代 出处 被引量
1Wnt signaling in disease and in development显示文摘The highly conserved Wnt secreted proteins are critical mediators of cell-to-cell signaling during development of animals. Recent biochemical and genetic analyses have led to significant insight into understanding how Wnt signals work. The catalogue of Wnt signaling components has exploded. We now realize that multiple extracellular, cytoplasmic, and nuclear components modulate Wnt signaling. Moreover, receptor-ligand specificity and multiple feedback loops determine Wnt signaling outputs. It is also clear that Wnt signals are required for adult tissue maintenance. Perturbations in Wnt signaling cause human degenerative diseases as well as cancer.Roel NUSSE 2005Cell Research2005,15,1:83
2Wnt signaling and stem cell control显示文摘发信号的 Wnt 在对干细胞的各种各样的类型的控制被含有并且可以充当一个壁龛因素处于一个自我更新的状态维持干细胞。当当前理解, Wnt 蛋白质在房间表面上绑在 Frizzled 和 LRP 家庭的受体。通过几个细胞质的继电器部件,信号是到 ss-catenin 的 transduced,它然后进入原子核并且与 TCF 形成建筑群激活 Wnt 目标基因的抄写。Wnts 能也通过酷氨酸 kinase 受体,特别地 ROR 和 RYK 受体发信号,导致 Wnt 发信号的其他的模式。在纸巾的生长期间,这些 ligands 和受体动态地被表示,经常, Wnt 控制的抄写联盟者表明自己,保证在增长和区别之间的正确平衡。孤立的 Wnt 蛋白质在许多干细胞上是活跃的,包括神经、乳房、胚胎的干细胞。一般来说, Wnt 蛋白质行动维持干细胞的无差别的状态,当另外的生长因素指示房间增殖时。这些另外的因素包括 FGF 和 EGF,通过酷氨酸 kinase 小径发信号。Roel Nusse 2008Cell Research2008,18,5:29
3中线恶网中的EB病毒感染显示文摘目的 观察一组中线恶网病变组织中 EB病毒感染的存在情况及其异形淋巴样细胞( atypic al lymphoid cells,AL Cs)的免疫表型。方法 37例病变组织切片作 DNA- RNA原位杂交 ,检测 EB病毒编码的小分子 RNA( EBER) ,作免疫组化染色看 EB病毒隐伏膜蛋白 ( L MP)抗原的表达及 ALCs的免疫表型 ;其中 15例用 PCR方法检测了 EBV- DNA。结果 ( 1) 31/ 37例 ,占 83.8%之ALCs呈 EBER 1/ 2阳性反应 ;12 / 15例 ,占 80 %检出 EBV- DNA;5/ 19例 ,占 2 6.3%之少部分 AL Cs呈 L MP阳性反应。 ( 2 ) 2 0 / 37例 ,占 54.1%之 ALCs同时表达 CD3及 CD56抗原 ;5/ 19例 ,占 2 6.3%之少部分 ALCs呈 CD30 +反应。结论 该组中线恶网病例中存在着较高比率的 EB病毒隐性感染 ,其ALCs既表达 T细胞分化抗原 ,同时也高水平地表达自然杀伤细胞抗原 ,CD56。作者还复习讨论了多种淋巴增生性疾病中 EBV感染的存在情况。刘卫平 Joostvan Gorp 李甘地 刘永惠 李俸媛 万红 Roel A de Weger 1997中华肿瘤杂志1997,19,1:27
4Management of recurrent rectal cancer:A population based study in greater Amsterdam显示文摘AIM: To analyze,retrospectively in a population-based study,the management and survival of patients with recurrent rectal cancer initially treated with a macroscopically radical resection obtained with total mesorectal excision (TME). METHODS: All rectal carcinomas diagnosed during 1998 to 2000 and initially treated with a macroscopically radical resection (632 patients) were selected from the Amsterdam Cancer Registry. For patients with recurrent disease,information on treatment of the recurrence was collected from the medical records. RESULTS: Local recurrence with or without clinically apparent distant dissemination occurred in 62 patients (10%). Thirty-two patients had an isolated local recurrence. Ten of these 32 patients (31%) underwent radical re-resection and experienced the highest survival (three quarters survived for at least 3 years). Eight patients (25%) underwent non-radical surgery (median survival 24 mo),seven patients (22%) were treated with radio-and/or chemotherapy without surgery (median survival 15 mo) and seven patients (22%) only received best supportive care (median survival 5 mo). Distant dissemination occurred in 124 patients (20%) of whom 30 patients also had a local recurrence. The majority (54%) of these patients were treated with radio-and/or chemotherapy without surgery (median survival 15 mo). Twenty-seven percent of these patients only received best supportive care (median survival 6 mo),while 16% underwent surgery for their recurrence. Survival was best in the latter group (median survival 32 mo). CONCLUSION: Although treatment options and survival are limited in case of recurrent rectal cancer after radical local resection obtained with TME,patients can benefit from additional treatment,especially if a radical resection is feasible.Roel Bakx Otto Visser Judith Josso Sybren Meijer J Frederik M Slors J Jan B van Lanschot 2008World Journal of Gastroenterology2008,14,39:17
5风沙移动与植物生物量的关系以及植物固沙能力研究(英文)显示文摘荒漠化是植被覆盖退化、风蚀水蚀加剧的过程。适应流沙条件的植物能够逆转荒漠化 (沙化 )过程 ,能够固沙。可用于研究植物固沙能力的数据不多。为了研究与植物生物量相关的植株周围的“风成沙移置 (wind_inducedsanddisplacement)” ,在研究中 ,将植株周围的风沙移动与 3种植物的生物量配置格局联系起来。并发展了一种新方法 ,以对植物固沙能力进行实验研究。风沙移动与生物量的关系不是线性的。除了植物生物量大小外 ,种类特异的植物特征 ,如生物量配置格局和植物枝叶的结构特征 ,在确定植物固沙能力方面也很重要。董鸣 Bas ROELS Sebastiaan DONDERS Marinus J.A.W ERGER 2001Acta Botanica Sinica2001,43,9:16
6Household air pollution and lung cancer in China:a review of studies in Xuanwei显示文摘Over half of the world's population is exposed to household air pollution from the burning of solid fuels at home. Household air pollution from solid fuel use is a leading risk factor for global disease and remains a major public health problem, especially in low- and mid-income countries. This is a particularly serious problem in China, where many people in rural areas still use coal for household heating and cooking. This review focuses on several decades of research carried out in Xuanwei County, Yunnan Province, where household coal use is a major source of household air pollution and where studies have linked household air pollution exposure to high rates of lung cancer. We conducted a series of case-control and cohort studies in Xuanwei to characterize the lung cancer risk in this population and the factors associated with it. We found lung cancer risk to vary substantially between different coal types, with a higher risk associated with smoky(i.e., bituminous) coal use compared to smokeless(i.e., anthracite) coal use. The installation of a chimney in homes resulted in a substantial reduction in lung cancer incidence and mortality. Overall, our research underscores the need among existing coal users to improve ventilation, use the least toxic fuel, and eventually move toward the use of cleaner fuels, such as gas and electricity.Wei Jie Seow Wei Hu Roel Vermeulen H.Dean Hosgood III George S.Downward Robert S.Chapman Xingzhou He Bryan A.Bassig Christopher Kim Cuiju Wen Nathaniel Rothman Qing Lan 2014Chinese Journal of Cancer2014,33,10:15
7用于轻金属切削的新工具涂层显示文摘新的碳基涂层已被发展用于切削轻金属 (如铝 )。这类涂层能直接用于工具上或者作为另一种硬质涂层的顶层。切削试验显示 :这类涂层对于容易粘附在工具上的材料 (如铝合金 )具有良好的切削性能 ,因为显著地减少了所谓的切屑瘤 (BUE)的出现。结果延长了工具的寿命并使工件材料在切削后表面光滑。特别是在干切削和深孔加工方面 ,涂层性能非常好。关于涂层性能的观察及原始切削结果将逐一介绍。本文也将介绍由一家主导欧洲的航空航天工业的制造商最近完成的工业领域的试验结果。切削力、切屑瘤的形成和表面粗糙度等数据将用来解释整个干切削过程。Dave Doerwald Thomas Krug Roel Tietema Wei-Ming Sim Quanshun Luo Papken Hovsepian 林松盛 代明江 2004国外金属热处理2004,25,5:7
8Silicon and silicon nitride photonic circuits for spectroscopic sensing on-a-chip [Invited]显示文摘There is a rapidly growing demand to use silicon and silicon nitride(Si3N4) integrated photonics for sensing applications, ranging from refractive index to spectroscopic sensing. By making use of advanced CMOS technology,complex miniaturized circuits can be easily realized on a large scale and at a low cost covering visible to mid-IR wavelengths. In this paper we present our recent work on the development of silicon and Si3N4-based photonic integrated circuits for various spectroscopic sensing applications. We report our findings on waveguide-based absorption, and Raman and surface enhanced Raman spectroscopy. Finally we report on-chip spectrometers and on-chip broadband light sources covering very near-IR to mid-IR wavelengths to realize fully integrated spectroscopic systems on a chip.Ananth Z.Subramanian Eva Ryckeboer Ashim Dhakal Frédéric Peyskens Aditya Malik Bart Kuyken Haolan Zhao Shibnath Pathak Alfonso Ruocco Andreas De Groote Pieter Wuytens Daan Martens Francois Leo Weiqiang Xie Utsav Deepak Dave Muhammad Muneeb Pol Van Dorpe Joris Van Campenhout Wim Bogaerts Peter Bienstman Nicolas Le Thomas Dries Van Thourhout Zeger Hens Gunther Roelkens Roel Baets 2015Photonics Research2015,3,5:7
9THE WNT SIGNALING PATHWAY IN DEVELOPMENT AND DISEASE显示文摘Catriona Y. Logan Roel Nusse 2004Annual Review of Cell and Developmental Biology2004,,:6
10Taking silicon photonics modulators to a higher performance level: state-of-the-art and a review of new technologies显示文摘Optical links are moving to higher and higher transmission speeds while shrinking to shorter and shorter ranges where optical links are envisaged even at the chip scale.The scaling in data speed and span of the optical links demands modulators to be concurrently performant and cost-effective.Silicon photonics(SiPh),a photonic integrated circuit technology that leverages the fabrication sophistication of complementary metal-oxide-semiconductor technology,is well-positioned to deliver the performance,price,and manufacturing volume for the high-speed modulators of future optical communication links.SiPh has relied on the plasma dispersion effect,either in injection,depletion,or accumulation mode,to demonstrate efficient high-speed modulators.The high-speed plasma dispersion silicon modulators have been commercially deployed and have demonstrated excellent performance.Recent years have seen a paradigm shift where the integration of various electro-refractive and electro-absorptive materials has opened up additional routes toward performant SiPh modulators.These modulators are in the early years of their development.They promise to extend the performance beyond the limits set by the physical properties of silicon.The focus of our study is to provide a comprehensive review of contemporary(i.e.,plasma dispersion modulators)and new modulator implementations that involve the integration of novel materials with SiPh.Abdul Rahim Artur Hermans Benjamin Wohlfeil Despoina Petousi Bart Kuyken Dries Van Thourhout Roel Baets 2021Advanced Photonics2021,3,2:6
11Percutaneous closure of secundum type atrial septal defects:More than 5-year follow-up显示文摘AIM: To investigate long-term efficacy of two different devices more than five years after percutaneous atrial septal defect(ASD) closure in adults.METHODS: All patients who underwent percutaneous closure of an ASD in the St. Antonius Hospital, Nieuwegein, The Netherlands, between February 1998 and December 2006 were included. Percutaneous closure took place under general anaesthesia and transesophageal echocardiographic moni toring. Transthoracic echocardiography(TTE) was performed 24 h post-procedure to visualize the device position and to look for residual shunting using color Doppler. All complications were registered. All patients were invited for an outpatient visit and contrast TTE more than 5-years after closure. Efficacy was based on the presence of a residual right-to-left shunt(RLS), graded as minimal, moderate or severe. The presence of a residual left-to-right shunt(LRS) was diagnosed using color Doppler, and was not graded. Descriptive statistics were used for patients' characteristics. Univariate analysis was used to identify predictors for residual shunting.RESULTS: In total, 104 patients(mean age 45.5 ± 17.1 years) underwent percutaneous ASD closure using an Amplatzer device(ASO) in 76 patients and a Cardioseal/Starflex device(CS/SF) in 28 patients. The mean follow-up was 6.4 ± 3.4 years. Device migration occurred in 4 patients of whom two cases occurred during the index hospitalization(1 ASO, 1 CS/SF). The other 2 cases of device migration occurred during the first 6 mo of follow-up(2 CS/SF). The recurrent thrombo-embolic event rate was similar in both groups: 0.4% per follow-up year. More than 12 mo post-ASD closure and latest follow-up, new-onset supraventricular tachyarrhythmia's occurred in 3.9% and 0% for the ASO and CS/SF group, respectively. The RLS rate at latest follow-up was 17.4%(minimal 10.9%, moderate 2.2%, severe 4.3%) and 45.5%(minimal 27.3%, moderate 18.2%, severe 0%) for the ASO- and CS/SF groups, respectively. There was no residual LRS in both groups.CONCLUSION: Percutaneous ASD closure has good long-term safety and efficacy profiles. The residual RLS rate seems to be high more than 5 years after closure, especially in the CS/SF. Residual LRS was not observed.Roel JR Snijder Maarten J Suttorp Jurrien M Ten Berg Martijn C Post 2015World Journal of Cardiology2015,7,3:6
12An exploratory study on the use of enzyme activities as sediment tracers:biochemical fingerprints?显示文摘Little information exists on the potential of soil enzyme activities,which are sensitive to soil properties and management,for the characterization of sediment sources at the catchment scale.The objective of this study is to explore and evaluate enzyme activity as tracer for sediment fingerprinting in the Hiv catchment(55 km^2),Iran.Therefore,four enzymes were measured from 42 different sampling sites,covering three sediment source areas(rangeland/surface erosion,orchard/surface erosion,and streambank erosion),as well as from 12 sediment samples from reservoir check dams (sediment sinks).The results indicate that,based upon backward mode discriminant analysis,βglucosidase and dehydrogenase,allowed more than 95%of the samples to be correctly assigned to their source areas.These enzymes were selected as input data for a mixing-model to determine the relative contribution of the sampled sediment sources.The mean contributions from rangeland, orchard and streambank sources in the study area were estimated as 11.3%,15.1%and 73.7%, respectively.Using geochemical tracers,the mean contribution from rangeland,orchard and streambank sources was estimated as 14.1%,9.5%and 74.8%,respectively.Combined biochemical and geochemical tracers,similar values were obtained(18.7%,10.7%and 70.7%,respectively).Our results indicate that soil enzyme activity allows for a good characterization of sediment sources,and can provide a complementary tool to currently existing sediment fingerprinting approaches.However, the method should be also tested in other regions.Kazem NOSRATI Gerard GOVERS Hassan AHMADI Forood SHARIFI Mohammad Ali AMOOZEGAR Roel MERCKX Matthias VANMAERCKE 2011International Journal of Sediment Research2011,26,2:5
13Risk factors for post-ERCP pancreatitis: A prospective, multicenter study显示文摘Martin L. Freeman James A. DiSario Douglas B. Nelson M.Brian Fennerty John G. Lee David J. Bjorkman Carol S. Overby Johannes Aas Michael E. Ryan Gary S. Bochna Michael J. Shaw Harry W. Snady Robert V. Erickson Joseph P. Moore Joseph P. Roel 2001Gastrointestinal Endoscopy2001,,4:5
14Transanal total mesorectal excision: Myths and reality显示文摘Transanal total mesorectal excision(TaTME) is a new and promising approach for the treatment of rectal cancer. Whilst the experience is still limited, there are growing evidences that this approach might overcome the limits of standard low anterior resection. TaTME might help to decrease the conversion rate especially in difficult patients, and to improve the pathological results, while preserving the urogenital function. Evaluation of data from large registries and randomized studies should help to draw firmer conclusions. Beyond these technical considerations, the next challenge seems to be clearly the safe introduction of this approach, motivating the development of dedicated courses.Nicolas C Buchs Marta Penna Alexander L Bloemendaal Roel Hompes 2016World Journal of Clinical Oncology2016,7,5:5
15Wnt/β-Catenin Signaling and Disease显示文摘Hans Clevers Roel Nusse 2012Cell2012,,6:4
16CPB的冠脉手术病人主要麻醉方法的选择影响术后ICU住院时间显示文摘Stefan G.De Hert Philippe J.Van der Linden Stefanie Cromheecke Roel Meeus Pieter W.ten Broecke Ivo G.De Blier Bernard A.tockman Inez E.Rodrigus 刘功俭(译) 曾因明(审) 2004国外医学(麻醉学与复苏分册)2004,25,4:4
17Coeliac disease in Dutch patients with Hashimoto’s thyroiditis and vice versa显示文摘AIM: To define the association between Hashimoto’s thyroiditis and coeliac disease in Dutch patients. METHODS: A total of 104 consecutive patients with Hashimoto’s thyroiditis underwent coeliac serological tests (antigliadins, transglutaminase and endomysium antibodies) and HLA-DQ typing. Small intestinal biopsy was performed when any of coeliac serological tests was positive. On the other hand, 184 patients with coeliac disease were subjected to thyroid biochemical (thyroid stimulating hormone and free thyroxine) and thyroid serological tests (thyroglobulin and thyroid peroxidase antibodies). RESULTS: Of 104 patients with Hashimoto’s thyroiditis, sixteen (15%) were positive for coeliac serology and five patients with documented villous atrophy were diagnosed with coeliac disease (4.8%; 95% CI 0.7-8.9). HLA-DQ2 (and/or -DQ8) was present in all the five and 53 patients with Hashimoto’s thyroiditis (50%; 95% CI 43-62). Of 184 patients with coeliac disease, 39 (21%) were positive for thyroid serology. Based on thyroid biochemistry, the 39 patients were subclassified into euthyroidism in ten (5%; 95% CI 2-9), subclinicalhypothyroidism in seven (3.8%; 95% CI 1.8-7.6), and overt hypothyroidism (Hashimoto’s thyroiditis) in 22 (12%; 95% CI 8-16). Moreover, four patients with coeliac disease had Graves’ disease (2%; 95% CI 0.8-5) and one patient had post-partum thyroiditis. CONCLUSION: The data from a Dutch population confirm the association between Hashimoto’s thyroiditis and coeliac disease. Screening patients with Hashimoto’s thyroiditis for coeliac disease and vice versa is recom- mended.Muhammed Hadithi Hans de Boer Jos WR Meijer Frans Willekens Jo A Kerckhaert Roel Heijmans Amado Salvador Pea Coen DA Stehouwer Chris JJ Mulder 2007World Journal of Gastroenterology2007,13,11:4
18Widely tunable 2.3μm III-V-on-silicon Vernier lasers for broadband spectroscopic sensing显示文摘Heterogeneously integrating III-V materials on silicon photonic integrated circuits has emerged as a promising approach to make advanced laser sources for optical communication and sensing applications. Tunable semiconductor lasers operating in the 2–2.5 μm range are of great interest for industrial and medical applications since many gases(e.g., CO_2, CO, CH_4) and biomolecules(such as blood glucose) have strong absorption features in this wavelength region. The development of integrated tunable laser sources in this wavelength range enables low-cost and miniature spectroscopic sensors. Here we report heterogeneously integrated widely tunable III-V-on-silicon Vernier lasers using two silicon microring resonators as the wavelength tuning components. The laser has a wavelength tuning range of more than 40 nm near 2.35 μm. By combining two lasers with different distributed Bragg reflectors, a tuning range of more than 70 nm is achieved. Over the whole tuning range, the side-mode suppression ratio is higher than 35 dB. As a proof-of-principle, this III-V-on-silicon Vernier laser is used to measure the absorption lines of CO. The measurement results match very well with the high-resolution transmission molecular absorption(HITRAN) database and indicate that this laser is suitable for broadband spectroscopy.RUIJUN WANG STEPHAN SPRENGEL ANTON VASILIEV GERHARD BOEHM JORIS VAN CAMPENHOUT GuY LEPAGE PETER VERHEYEN ROEL BAETS MARKUS-CHRISTIAN AMANN GUNTHER ROELKENS 2018Photonics Research2018,6,9:3
19Transanal total mesorectal excision:a valid option for rectal cancer?显示文摘Low anterior resection can be a challenging operation, especially in obese male patients and in particular after radiotherapy. Transanal total mesorectal excision(Ta TME) might offer technical advantages over laparoscopic or open approaches particularly for tumors in the distal third of the rectum. The aim of this article is to review the current experience with Ta TME. The limits and future developments are also explored. Although the experience with Ta TME is still limited, it might be a promising alternative to laparoscopic TME, especially for difficult cases where laparoscopy is too demanding. The preliminary data on complications and short-term oncological outcomes are good, but also emphasize the importance of careful patient selection. Finally, there is a need for large-scale trials focusing on long-term outcomes and oncological safety before widespread adoption can be recommended.Nicolas C Buchs Gary A Nicholson Frederic Ris Neil J Mortensen Roel Hompes 2015World Journal of Gastroenterology2015,21,41:3
20Wnt genes显示文摘Roel N Harold E V 1992Cell1992,69,7:2
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