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447篇 您的检索式:作者名="Tyler A"
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1Magnetic anchor guidance for endoscopic submucosal dissection and other endoscopic procedures显示文摘Endoscopic submucosal dissection(ESD) is a wellestablished, minimally invasive treatment for superficial neoplasms of the gastrointestinal tract. The universal adoption of ESD has been limited by its slow learning curve, long procedure times, and high risk of complications. One technical challenge is the lack of a second hand that can provide traction, as in conventional surgery. Reliable tissue retraction that exposes the submucosal plane of dissection would allow for safer and more efficient dissection. Magnetic anchor guided endoscopic submucosal dissection(MAGESD) has potential benefits compared to other current traction methods. MAG-ESD offers dynamic tissue retraction independent of the endoscope mimicking a surgeon's 'second hand'. Two types of magnets can be used: electromagnets and permanent magnets. In this article we review the MAG-ESD technology, published work and studies of magnets in ESD. We also review the use of magnetic anchor guidance systems in natural orifice transluminal endoscopic surgery and the idea of magnetic non-contact retraction using surface ferromagentization. We discuss the current limitations, the future potential of MAG-ESD and the developments needed for adoption of this technology.Mohamed Mortagy Neal Mehta Mansour A Parsi Seiichiro Abe Tyler Stevens John J Vargo Yutaka Saito Amit Bhatt 2017World Journal of Gastroenterology2017,23,16:12
2Diagnostic and therapeutic direct peroral cholangioscopy using an intraductal anchoring balloon显示文摘AIM:To report our experience using a recently introduced anchoring balloon for diagnostic and therapeutic direct peroral cholangioscopy(DPOC).METHODS:Consecutive patients referred for diagnostic or therapeutic peroral cholangioscopy were evaluated in a prospective cohort study.The patients underwent DPOC using an intraductal anchoring balloon,which was recently introduced to allow consistent access to the biliary tree with an ultraslim upper endoscope.The device was later voluntarily withdrawn from the market by the manufacturer.RESULTS:Fourteen patients underwent DPOC using the anchoring balloon.Biliary access with an ultraslim upper endoscope was accomplished in all 14 patients.In 12(86%) patients,ductal access required sphincteroplasty with a 10-mm dilating balloon.Intraductal placement of the ultraslim upper endoscope allowed satisfactory visualization of the biliary mucosa to the level of the confluence of the right and left hepatic ducts in 13 of 14 patients(93%).Therapeutic interventions by DPOC were successfully completed in all five attempted cases(intraductal biopsy in one and DPOC guided laser lithotripsy in four).Adverse events occurred in a patient on immunosuppressive therapy who developed an intrahepatic biloma at the site of the anchoring balloon.This required hospitalization and antibiotics.Repeat endoscopic retrograde cholangiopancreatography 8 wk after the index procedure showed resolution of the biloma.CONCLUSION:Use of this anchoring balloon allowed consistent access to the biliary tree for performance of diagnostic and therapeutic DPOC distal to the biliary bifurcation.Mansour A Parsi Tyler Stevens John J Vargo 2012World Journal of Gastroenterology2012,18,30:8
3Update on endoscopic pancreatic function testing显示文摘Hormone-stimulated pancreatic function tests (PFTs) are considered the gold standard for measuring pancreatic exocrine function. PFTs involve the administration of intravenous secretin or cholecystokinin, followed by collection and analysis of pancreatic secretions. Because exocrine function may decline in the earliest phase of pancreatic fibrosis, PFTs are considered accurate for diagnosing chronic pancreatitis. Unfortunately, these potentially valuable tests are infrequently performed except at specialized centers, because they are time consuming and complicated. To overcome these limitations, endoscopic PFT methods have been developed which include aspiration of pancreatic secretions through the suction channel of the endoscope. The secretin endoscopic pancreatic function test (ePFT) involves collection of duodenal aspirates at 15, 30, 45 and 60 min after secretin stimulation. A bicarbonate concentration greater than 80 mmol/L in any of the samples is considered a normal result. The secretin ePFT has demonstrated good sensitivity and specificity compared with various reference standards, including the 'Dreiling tube' secretin PFT, endoscopic ultrasound, and surgical histology. Furthermore, a standard autoanalyzer can be used for bicarbonate analysis, which allows the secretin ePFT to be performed at any hospital. The secretin ePFT may complement imaging tests like endoscopic ultrasound (EUS) in the diagnosis of early chronic pancreatitis.This paper will review the literature validating the use of ePFT in the diagnosis of exocrine insufficiency and chronic pancreatitis. Newer developments will also be discussed, including the feasibility of combined EUS/ ePFT, the use of cholecystokinin alone or in combination with secretin, and the discovery of new protein and lipid pancreatic juice biomarkers which may complement traditional fluid analysis.Tyler Stevens Mansour A Parsi 2011World Journal of Gastroenterology2011,17,35:5
4健康领域的文化能力显示文摘1背景 尽管人类对其他社会的兴趣纵贯历史的各个阶段,但是检验不同文化概念对人类健康实践的影响从20世纪才开始,当时是伴随着长期的人类学田野调查产生的,这些田野调查揭露了不同文化之间相关卫生实践的多样性、复杂性和连续性。Napier A D Ancarno C Butler B Calabrese j Chater A Chatterjee H Guesnet F Home R Jacyna S Jadhav S Macdonald A Neuendorf U Parkhurst A Reynolds R Scambler G Shamdasani S Smith S Z Stougaard-Nielsen J Thomson L Tyler N Volkmann A M Walker T Watson J Williams AC Willott C Wilson J Woolf K 2016中国卫生政策研究2016,9,2:5
5Endoscopic ultrasound for the diagnosis of chronic pancreatitis显示文摘Endoscopic ultrasound(EUS) has become a well accepted test for the diagnosis of chronic pancreatitis.Advantages include its ability to detect subtle and severe changes of the pancreatic duct and parenchyma,and its relative safety compared with endoscopic retrograde cholangiopancreatography.Limitations include inter-and intraobserver variability,operator dependence,and an incomplete understanding of its true accuracy.The Rosemont classif ication has recently been proposed as a weighted,standardized method that may improve EUS chronic pancreatitis scoring.This paper reviews the published evidence regarding the accuracy of EUS in chronic pancreatitis diagnosis,and enumerates the emerging technologies that have been recently studied which may ultimately improve endosonographic imaging of the pancreas.Tyler Stevens Mansour A Parsi 2010World Journal of Gastroenterology2010,16,23:5
6Local immunotherapy with interleuk in-2 delivered from biodegradable p olymer microspheres combined with interstitial chemotherapy:a novel treatme nt for experimental malignant glioma显示文摘OBJECTIVE:Local delivery of carmustine(BCNU)from biodegradable polymers prolon gs survival against experimental brain tumors.Moreover,paracrine administration of inte rleukin-2(IL-2)has been shown to elicit a potent antitumor immune response and to improve survival in animal brain tumor models.We r eport the use of a novel polymeric mic rosphere delivery vehicle to release IL-2.We demonstr ate both in vitro release of cytokine from the microspheres and histological evidence of the inflammatory response elicited by I L-2released from the microspheres i n the rat brain.These microspheres a re used to deliver IL-2,and biodegradable polymer wafers are used to deliver BCNU,directly at the site of an intracranially implanted glioma in the rat.The two agents administered locally show a s ynergistic effect.METHODS:Fischer 344rats challenged intracranially with 9L gliosarcoma received an intracranial implant of either empty microspheres or microspheres containing IL-2(IL-2MS ).Five days later,animals in each group were randomized to receiv e polymer implants loaded with 0,3.8,or 10%BCNU at the tumor site.RESULTS:Animals that received the combination of IL-2MS a nd 3.8%BCNU polymer(median survival,28.5d )or IL-2MS and 10%BCNU polymer(median survival,45.5d )showed significantly improved surv ival compared with animals that rece ived monotherapy with IL-2microsph eres(median survival,24d ),3.8%BCNU polymer(median survival,24d ),or 10%BCNU polymer(median survival,32.5d ).Control animals had a median survival of 18days.The combination of either 3.8or 10%BCNU polymer with IL-2MS resulted in 7and 25%long-term survivors,respectively.CONCLUSION:By showing synergy of IL-2and BCNU in an animal glioma model and using a reproducible synthetic delivery sy stem for each agent (i.e.,one that did not rely on genetic ally engineered cells or viruses),we hope that the combination of local immunotherapy and chemotherapy can take an important step closer to clinical applic ation in patients with malignant brainRhines LD DiMeco F Lawson HC Tyler BM Hanes J Olivi A Brem H 2003癌症2003,22,7:2
7Label-retaining liver cancer cells are relatively resistant to sorafenib显示文摘Hong-Wu Xin Chenwi M Ambe Danielle M Hari Gordon W Wiegand Tyler C Miller Jin-Qiu Chen Andrew J Anderson Satyajit Ray John E Mullinax Tomotake Koizumi Russell C Langan Douglas Burka Michelle A Herrmann Paul K Goldsmith Alexander Stojadinovic Udo Rudloff S 2013Gut2013,,12:2
8文化、不平等性与卫生服务提供显示文摘1动态不平等性对基层医疗卫生人力的影响 政治、社会、文化、专业群体皆建立在一致且常规的人类行为之上。当遭受巨大变革和内外压力时,这些群体会变得十分脆弱。尤其在动荡时期,这些群体往往更关注社会和文化的差异性,而非二者的一致性。尽管社会中的个体思维和行为会呈现较大的差异,但对健康的感知具有统一性,并在更广范围人群内尤为突出,这主要归因于文化价值观的作用。广义的文化心态会随着时间和地理位置的不同而不同,就像健康的社会决定因素也会因文化类型的不同而产生差异。Napier A D Ancarno C Butler B Calabrese J Chater A Chatterjee H Guesnet F Horne R Jacyna S Jadhav S Macdonald A Neuendorf U Parkhurst A Reynolds R Scambler G Shamdasani S Smith S Z Stougaard-Nielsen J Thomson L Tyler N Volkmann A M Walker T Watson J Williams A C Willott C Wilson J Woolf K 2016中国卫生政策研究2016,9,3:2
9New uses for new haplotypes the human Y-chromosome,disease and selection显示文摘Jobling M A Tyler S C 2000Trends Genet2000,16,:1
10Macroalgae mediation of dissolved organic nitrogen fluxes in a temperate coastal lagoon显示文摘Tyler A C McGlathery K J Anderson I C 1994Est Coast Shelf Sci1994,53,:1
11The mucin MUCI6 (CA125) binds to NK cells and monocytes from peripheral blood of women with healthy pregnancy and preeclampsia显示文摘Tyler C Kapur A Felder M 2012Am J Reprod Immunol2012,68,1:1
12医疗卫生保健文化的反思及促进健康与文化融合的建议显示文摘1医疗卫生保健文化的反思1.1健康文化与医学知识如果医务人员有充足的时间对患者进行诊断并帮助患者进行社区护理,就可在节省卫生费用的同时改善健康结果。整合型社区护理能缩小不同文化背景和群体健康需求的差异。然而,全球范围内对整合型社区护理的投入较少,原因之一就是20世纪对临床服务的重视弱化了卫生服务提供过程中的同情心理。当然,患者也对医学知识存在显性和隐性的影响(特别是当其因不遵医嘱而受到指责时)。Napier A D Ancarno C Butler B Calabrese J Chater A Chatterjee H Guesnet F Horne R Jacyna S Jadhav S Macdonald A Neuendorf U Parkhurst A Reynolds R Scambler G Shamdasani S Smith S Z Stougaard-Nielsen J Thomson L Tyler N Volkmann A M Walker T Watson J Williams A C Willott C Wilson JWoolf K 2016中国卫生政策研究2016,9,4:1
13Movement dynamics in a fishery application of the ideal free distribution to spatial allocation of effort显示文摘GILLS D M PETERMAN R M TYLER A V 1993Canada Fish Aquatic Science1993,,50:1
14Clinical experience with Tc-99m nofetumomab merpentan (Verluma) radioimmunoscintigraphy显示文摘Breitz HB Tyler A Bjorn MJ 1997Clin Nucl Med1997,22,9:1
15Business-to-business Adoption of eCommerce in China 显示文摘Tan J Tyler K Manica A 2007Information & Management2007,44,3:1
16Chronic allograft nephropathy: intraepithelial signals generated by transforming growth factor-beta and bone morphogenetic protein- 7 显示文摘TYLER J R ROBERTSON H BOOTH T A 2006Am J Transplant2006,6,:1
17Strategic decision models: Integrating different perspectives显示文摘Hitt M A Tyler B B 1991Strategic Management Journal1991,12,5:1
18Hospital readmission from a transitional care unit显示文摘Anderson M A Tyler D Helms L B 2005J Nurs Care Qual2005,20,1:1
19Wnt/β-catenin signaling in adipogenesis and metabolism显示文摘Tyler C Prestwich Ormond A MacDougald 2007Current Opinion in Cell Biology2007,,6:1
20Deep arid system hydrodynamics 2:Application to paleohydrologic reconstruction using vadose zone profiles from the northern Mojave Desert显示文摘Walvoord M A Phillips F M Tyler S W 2002Water Resources Research2002,38,12:1
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