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2886篇 您的检索式:作者名="Beards"
    题名 作者 年代 出处 被引量
1东方遇见西方:增龄性骨骼肌肉疾病的临床实践和策略显示文摘健康老龄化是指人在维持良好身体功能、保证生活质量前提下的衰老过程。这个过程能否实现取决于机体固有能力,一方面包括心理、生理能力,另一方面包括机体所处环境以及二者的相互作用。在老龄化进程中,骨骼肌肉健康是维持老年人身体功能的重要条件。全球肌少症、骨质疏松症和骨关节炎等老龄化相关的骨骼肌肉疾病及机体失能所致的负担正在增加,因此随着人口老龄化的加剧,防治这类疾病也尤为重要。以此为契机,中华医学会、中华医学会骨质疏松和骨矿盐疾病分会、欧洲骨质疏松和骨关节炎临床经济学会联合开设论坛,共同探讨增龄性肌肉骨骼疾病的现行临床诊治策略。本次会议邀请了中国和欧洲的专家到场,分享这3种疾病的临床诊治经验;双方通过经验交流、讨论异同以取长补短,从而实现对疾病的更佳防治,维持老年人的自身能力、延缓老龄化带来的身体功能退化。展望未来,希望双方经验及最佳临床实践的交流能推进全球战略,以减轻肌肉骨骼疾病的负担,促进符合个体化需求的健康老龄进程。夏维波 Cyrus Cooper 李梅 徐苓 Rene Rizzoli 朱梅 林华 John Beard 丁悦 余卫 Etienne Cavalier 章振林 John A.Kanis 程群 王秋梅 Jean-Yves Reginster 冯亦鸣(翻译) 2019中华骨质疏松和骨矿盐疾病杂志2019,12,5:13
2Osteopontin increases hepatocellular carcinoma cell growth in a CD44 dependant manner显示文摘AIM:To investigate the role of osteopontin(OPN) and its splice variants in the proliferation of hepatocellular carcinoma(HCC).METHODS:The expression of OPN variants in HCC cell lines as well as HCC tissue samples and nontumour tissue was studied using polymerase chain reaction.OPN variant cDNAs were cloned into a mammalian expression vector allowing both transient expression and the production of stable OPN expressing cell lines.OPN expression was studied in these cells using Western blotting,immunofluoresnce and enzyme linked immunosorbent assay.A CD44 blocking antibody and siRNA targeting of CD44 were used to examine the role of this receptor in the OPN stimulated cell growth observed in culture.Huh-7 cells stably expressing either OPN-A,-B or-C were injected subcutaneously into the flanks of nude mice to observe in vivo tumour growth.Expression of OPN mRNA and protein in these tumours was examined using reverse transcriptionpolymerase chain reaction and immunohistochemistry.RESULTS:OPN is expressed in HCC in 3 forms,the full length OPN-A and 2 splice variants OPN-B and-C.OPN variant expression was noted in HCC tissue as well as cognate surrounding cirrhotic liver tissue.Expression of these OPN variants in the HCC derived cell line Huh-7 resulted in secretion of OPN into the culture medium.Transfer of OPN conditioned media to na ve Huh-7 and HepG2 cells resulted in significant cell growth suggesting that all OPN variants can modulate cell proliferation in a paracrine manner.Furthermore the OPN mediated increase in cellular proliferation was dependent on CD44 as only CD44 positive cell lines responded to OPN conditioned media while siRNA knockdown of CD44 blocked the proliferative effect.OPN expression also increased the proliferation of Huh-7 cells in a subcutaneous nude mouse tumour model,with Huh-7 cells expressing OPN-A showing the greatest proliferative effect.CONCLUSION:This study demonstrates that OPN plays a significant role in the proliferation of HCC through interaction with the cell surface receptor CD44.Modulation of this interaction could represent a novel strategy for the control of HCC.Renee J Phillips Karla J Helbig Kylie H Van der Hoek Devanshi Seth Michael R Beard 2012World Journal of Gastroenterology2012,18,26:12
3Through-needle all-optical ultrasound imaging in vivo: a preclinical swine study显示文摘High-frequency ultrasound imaging can provide exquisite visualizations of tissue to guide minimally invasive procedures.Here,we demonstrate that an all-optical ultrasound transducer,through which light guided by optical fibers is used to generate and receive ultrasound,is suitable for real-time invasive medical imaging in vivo.Broad-bandwidth ultrasound generation was achieved through the photoacoustic excitation of a multiwalled carbon nanotube-polydimethylsiloxane composite coating on the distal end of a 300-μm multi-mode optical fiber by a pulsed laser.The interrogation of a high-finesse Fabry–Pérot cavity on a single-mode optical fiber by a wavelength-tunable continuous-wave laser was applied for ultrasound reception.This transducer was integrated within a custom inner transseptal needle(diameter 1.08 mm;length 78 cm)that included a metallic septum to acoustically isolate the two optical fibers.The use of this needle within the beating heart of a pig provided unprecedented realtime views(50 Hz scan rate)of cardiac tissue(depth:2.5 cm;axial resolution:64μm)and revealed the critical anatomical structures required to safely perform a transseptal crossing:the right and left atrial walls,the right atrial appendage,and the limbus fossae ovalis.This new paradigm will allow ultrasound imaging to be integrated into a broad range of minimally invasive devices in different clinical contexts.Malcolm C Finlay Charles A Mosse Richard J Colchester Sacha Noimark Edward Z Zhang Sebastien Ourselin Paul C Beard Richard J Schilling Ivan P Parkin Ioannis Papakonstantinou Adrien E Desjardins 2017Light(Science & Applications)2017,6,1:6
4Impact of alcohol on hepatitis C virus replication and interferon signaling显示文摘Hepatitis C virus (HCV) is one of the main etiological factors responsible for liver disease worldwide. It has been estimated that there are over 170 million people infected with HCV worldwide. Of these infected individuals, approximately 75% will go on to develop a life long necroinflammatory liver disease, which over decades, can result in serious complications, such as cirrhosis and hepatocellular carcinoma. Currently there is no effective vaccine and whilst antiviral therapies have been improved, they are still only effective in approximately 50% of individuals. HCV infection stands as a major cause of global morbidity and suffering, and places a signifi cant burden on health systems. The second highest cause of liver disease in the western world is alcoholic liver disease. Frequently, HCV infected individuals consume alcohol, and the combined effect of HCV and alcohol consumption is deleterious for both liver disease and response to treatment. This review discusses the impact of alcohol metabolism on HCV replication and the negative impact on interferon (IFN)-α treatment, with a particular focus on how alcohol and HCV act synergistically to increase oxidative stress, ultimately leading to exacerbated liver disease and a reduction in the effi cacy of IFN-α treatment. A better understanding of the complicated mechanisms at play in hepatocytes infected with HCV and metabo- lizing alcohol will hopefully provide better treatment options for chronic hepatitis C individuals that consume alcohol.Erin M McCartney Michael R Beard 2010World Journal of Gastroenterology2010,16,11:5
5Current role of palliative interventions in advanced pancreatic cancer显示文摘Pancreatic adenocarcinoma is the third leading cause of cancer death in the United States. Unfortunately, at diagnosis, most patients are not candidates for curative resection. Surgical palliation, a procedure performed with the intention of relieving symptoms or improving quality of life, comes to the forefront of management. This article reviews the palliative management of unresectable pancreatic cancer, including obstructive jaundice, duodenal obstruction and pain control with celiac plexus block. Although surgical bypasses for both biliary and duodenal obstructions usually achieve good technical success, they result in considerable perioperative morbidity and mortality, even when performed laparoscopically. The effectiveness of selfexpanding metal stents for biliary drainage is excellent with low morbidity. Surgical gastrojejunostomy for duodenal obstruction appears to be best for patients with a life expectancy of greater than 2 mo while endoscopic stenting has been shown to be feasible with good symptom relief in those with a shorter life expectancy. Regardless of the palliative procedure performed, all physicians involved must be adequately trained in end of life management to ensure the best possible care for patients.Chelsey C Ciambella Rachel E Beard Thomas J Miner 2018World Journal of Gastrointestinal Surgery2018,10,7:4
6Characterization of basic physical properties of Sb_(2)Se_(3) and its relevance for photovoltaics显示文摘Chao CHEN David C. BOBELA Ye YANG Shuaicheng LU Kai ZENG1 Cong GE Bo YANG Liang GAO Yang ZHAO Matthew C. BEARD Jiang TANG 2017Frontiers of Optoelectronics2017,10,1:2
7Parkinson’s Disease Patient-Derived Induced Pluripotent Stem Cells Free of Viral Reprogramming Factors显示文摘Frank Soldner Dirk Hockemeyer Caroline Beard Qing Gao George W. Bell Elizabeth G. Cook Gunnar Hargus Alexandra Blak Oliver Cooper Maisam Mitalipova Ole Isacson Rudolf Jaenisch 2009Cell2009,,5:2
8Spatial Variability of Soil Properties in the Shortgrass Steppe: The Relative Importance of Topography, Grazing, Microsite, and Plant Species in Controlling Spatial Patterns显示文摘Ingrid C. Burke William K. Lauenroth Rebecca Riggle Peter Brannen Brian Madigan Scott Beard 1999Ecosystems1999,,5:2
9年龄相关性线粒体功能障碍加速动脉粥样硬化形成显示文摘老化是动脉粥样硬化的最强危险因素之一。然而,老化是否独立于慢性高血脂症而增加动脉粥样硬化的风险尚不清楚。该研究旨在确定高血脂症诱导前的血管老化是否会加速动脉粥样硬化的形成。研究者分析了幼年和老年正常血脂野生型(wild type,WT)、无疾病小鼠的主动脉,发现老化导致白细胞介素(interleukin,IL)6水平升高和线粒体功能障碍,并与线粒体自噬增加和其相关蛋白Parkin增加相关。在主动脉组织培养中,研究者发现随着老化的出现,线粒体功能障碍与IL-6存在正反馈关系。研究者通过诱导低密度脂蛋白受体的肝脏特异性降解,再结合10周的西方食物喂养,在老年和幼年小鼠中诱发急性高血脂症,发现老年WT小鼠的动脉粥样硬化增强。高血脂症进一步降低了老年小鼠的线粒体功能,增加了主动脉中Parkin的水平,但幼鼠则没有。刘青(译) 叶鹏(摘、审校) Tyrrell DJ Blin M Song J Wood S Zhang M Beard DA Goldstein D 2020中华高血压杂志2020,28,2:2
10Genetic determinants of altered virulence of Taiwanese foot-and-mouth disease virus显示文摘Beard C W Mason P W 2000J Virol2000,74,:2
11Thermodynamic constraints for biochemical networks 显示文摘Beard D A Babson E Curtis E 2004J Theor Biol2004,228,3:1
12Inhibition of extracellular-signal regulated kinases 1/2 is required for apoptosis of human colon cancer cells in vitro by sulindac metabolites显示文摘Rice PL Beard KS Driggers LJ 2004Cancer Res2004,64,22:1
13Structure and mechanism of DNA polymerase Beta显示文摘BEARD W A WILSON S H 2006Chem Rev2006,106,2:1
14Methods for treating diabetic gastroparesis显示文摘BEARD PL 2002J Infus Nurs2002,25,2:1
15Influence of environmental temperature on the serologic response of broiler chickens to inactivated and viable new castle disease vaccines显示文摘 Mitchell B W 1987Avian Disease1987,31,:1
16Ectopic expression of Oct4 blocks progenitor-cell differentiation and causes dysplasia in epithelial tissues显示文摘Hochedlinger K Yamada Y Beard C 2005Cell2005,121,3:1
17Synchronized multiple spacecraft rotations显示文摘Lawton J R Beard R W 2002Automatic2002,38,8:1
18Parkinson′s disease patient-derived induced pluripotent stem cells free of viral reprogramming factors显示文摘Soldner F Hockemeyer D Beard C 2009Cell2009,136,5:1
19Multiple exciton generation in semiconductor quantum dots 显示文摘Beard M C 2011J Phys Chem Lett2011,2,11:1
20Dimensions of organizational task environments显示文摘Dess G and Beard W 1984Administrative Science Quarterly1984,,29:1
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