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3158篇 您的检索式:作者名="Phillips R"
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1Osteopontin 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
2Relationship between the exocrine and endocrine pancreas after acute pancreatitis显示文摘AIM:To determine the prevalence and time course of pancreatic exocrine insufficiency in individuals with newly diagnosed prediabetes or diabetes mellitus after acute pancreatitis.METHODS:Relevant literature cited in three major biomedical journal databases(EMBASE,MEDLINE,and Scopus)was reviewed independently by two authors.There were no language constraints but the search was limited to human studies.Studies included were cohort studies of adult patients who were discharged after an attack of acute pancreatitis.Patients were excluded if they were under 18 years of age or had a previous diagnosis of prediabetes or diabetes mellitus,pancreatic exocrine insufficiency,or chronic pancreatitis.The main outcome measure was the prevalence of concomitant pancreatic exocrine insufficiency in patients who were diagnosed with prediabetes and diabetes mellitus after an attack of acute pancreatitis.Subgroup analysis was conducted for patients who were diagnosed with prediabetes only and those who were diagnosed withdiabetes mellitus only.Subgroup analysis looking at the time course of concomitant pancreatic exocrine and endocrine insufficiency was also conducted.Pooled prevalence and corresponding 95%confidence intervals were calculated for all outcome measures and P-values<0.05 were deemed statistically significant.RESULTS:Eight clinical studies comprising of 234patients met all eligibility criteria.The pooled prevalence of newly diagnosed prediabetes or diabetes in individuals after acute pancreatitis was 43%(95%CI:30%-56%).The pooled prevalence of pancreatic exocrine insufficiency in individuals after acute pancreatitis was 29%(95%CI:19%-39%).The prevalence of concomitant pancreatic exocrine insufficiency in individuals with newly diagnosed prediabetes or diabetes was 40%(95%CI:25%-55%).The prevalence of concomitant pancreatic exocrine insufficiency among individuals with prediabetes alone and diabetes mellitus alone was 41%(95%CI:12%-75%)and 39%(95%CI:28%-51%),respectively.Further analysis showed that the prevalence of concomitant pancreatic exocrine insufficiency in individuals with prediabetes or diabetes decreases over time after an attack of acute pancreatitis.CONCLUSION:Pancreatic exocrine insufficiency occurs in 40%of individuals with newly diagnosed prediabetes or diabetes mellitus after acute pancreatitis.Further studies are needed to investigate the pathogenesis of diabetes in this setting.Stephanie L M Das James I C Kennedy Rinki Murphy Anthony R J Phillips John A Windsor Maxim S Petrov 2014World Journal of Gastroenterology2014,20,45:9
3Heme in intestinal epithelial cell turnover, differentiation, detoxification, inflammation, carcinogenesis, absorption and motility显示文摘胃肠道被经历包含两极分裂,区别和细胞死亡的经常的更新的一张单层上皮衬里。另外,上皮的衬里分开由保护上皮免受被突破的伤害的防御机制从内部周围的无菌的环境发生在肠的腔的消化和吸收的敌对过程。对这些防御过程中央是合成他我和它的分解代谢由他我氧合酶(惊讶) 。饮食他我也是为被收起的身体的铁的重要来源由 enterocyte 未经触动。这评论在肠道在 heme/HO 的多样的性质上描述最近的文学。在房间 cycle/apoptosis, xenobiotics 的 detoxification,氧化压力,发炎,结肠癌的发展, heme 铁吸收和肠的活动性的规定的 heme/HO 的角色明确地被检验。Phillip S Oates Adrian R West 2006World Journal of Gastroenterology2006,12,27:8
4Circular smooth muscle contributes to esophageal shortening during peristalsis显示文摘AIM:To study the angle between the circular smooth muscle(CSM) and longitudinal smooth muscle(LSM) fibers in the distal esophagus.METHODS:In order to identify possible mechanisms for greater shortening in the distal compared to proximal esophagus during peristalsis,the angles between the LSM and CSM layers were measured in 9 cadavers.The outer longitudinal layer of the muscularis propria was exposed after stripping the outer serosa.The inner circular layer of the muscularis propria was then revealed after dissection of the esophageal mucosa and the underlying muscularis mucosa.Photographs of each specimen were taken with half of the open esophagus folded back showing both the outer longitudinal and inner circular muscle layers.Angles were measured every one cm for 10 cm proximal to the squamocolumnar junction(SCJ) by two independent investigators.Two human esophagi were obtained from organ transplant donors and the angles between the circular and longitudinal smooth muscle layers were measured using micro-computed tomography(micro CT) and Image J software.RESULTS:All data are presented as mean ± SE.The CSM to LSM angle at the SCJ and 1 cm proximal to SCJ on the autopsy specimens was 69.3 ± 4.62 degrees vs 74.9 ± 3.09 degrees,P = 0.32.The CSM to LSM angle at SCJ were statistically significantly lower than at 2,3,4 and 5 cm proximal to the SCJ,69.3 ± 4.62 degrees vs 82.58 ± 1.34 degrees,84.04 ± 1.64 degrees,84.87 ± 1.04 degrees and 83.72 ± 1.42 degrees,P = 0.013,P = 0.008,P = 0.004,P = 0.009 respectively.The CSM to LSM angle at SCJ was also statistically significantly lower than the angles at 6,7 and 8 cm proximal to the SCJ,69.3 ± 4.62 degrees vs 80.18 ± 2.09 degrees,81.81 ± 1.75 degrees and 80.96 ± 2.04 degrees,P = 0.05,P = 0.02,P = 0.03 respectively.The CSM to LSM angle at 1 cm proximal to SCJ was statistically significantly lower than at 3,4 and 5 cm proximal to the SCJ,74.94 ± 3.09 degrees vs 84.04 ± 1.64 degrees,84.87 ± 1.04 degrees and 83.72 ± 1.42 degrees,P = 0.019,P = 0.008,P = 0.02 respectively.At 10 cm above SCJ the angle was 80.06 ± 2.13 degrees which is close to being perpendicular but less than 90 degrees.The CSM to LSM angles measured on virtual dissection of the esophagus and the stomach on micro CT at the SCJ and 1 cm proximal to the SCJ were 48.39 ± 0.72 degrees and 50.81 ± 1.59 degrees.Rather than the angle of the CSM and LSM being perpendicular in the esophagus we found an acute angulation between these two muscle groups throughout the lower 10 cm of the esophagus.CONCLUSION:The oblique angulation of the CSM may contribute to the significantly greater shortening of distal esophagus when compared to the mid and proximal esophagus during peristalsis.Anil K Vegesna Keng-Yu Chuang Ramashesai Besetty Steven J Phillips Alan S Braverman Mary F Barbe Michael R Ruggieri Larry S Miller 2012World Journal of Gastroenterology2012,18,32:7
5Mechanisms of heme iron absorption:Current questions and controversies显示文摘Iron is a critical micronutrient, and iron derived from heme contributes a large proportion of the total iron absorbed in a typical Western diet. Heme iron is absorbed by different mechanisms than non-heme iron, but despite considerable study over many years these mechanisms remain poorly understood. This review provides an overview of the importance of heme iron in the diet and discusses the two prevailing hypotheses of heme absorption; namely receptor mediated endocytosis of heme, and direct transport into the intestinal enterocyte by recently discovered heme transporters. A specific emphasis is placed on the questions surrounding the site of heme catabolism and the identity of the enzyme that performs this task. Additionally, we present the hypothesis that a non-heme iron transport protein may be required for heme iron absorption and discuss the experiences of our laboratory in examining this hypothesis.Adrian R West Phillip S Oates 2008World Journal of Gastroenterology2008,14,26:5
6PLEIOTROPIC REGULATORY LOCUS 1 (PRL1) Integrates the Regulation of Sugar Responses with Isoprenoid Metabolism in Arabidopsis显示文摘在植物房间的 isoprenoids 的生合成从 mevalonate (MVA ) 在 cytosol 生产的先锋发生小径并且在由 methylerythritol 4 磷酸盐(MEP ) 的质体,小径,而是很少对协调两条小径的机制被知道。在 Arabidopsis thaliana 为如此的协作发信号的糖的重要性的证据被没有变化,在相关 MEP 小径抄本,蛋白质,或酶活动的层次显示出导出 MEP 的 isoprenoid 产品(叶绿素和类胡萝卜素) 的增加的累积的异种的描述这里提供。这异种被发现是新 loss-of-function 等位基因 PRL1 (多种的规章的地点 1 ) ,编码作为糖的一个全球管理者工作的保存 WD 蛋白质的基因,应力,和荷尔蒙回答,部分地由 SNF1 相关的蛋白质 kinases (SnRK1 ) 的抑制。与在 MVA 小径的主要的规章的酶的 phosphorylation 和 inactivation 的 SnRK1 kinases 的报导角色一致(hydroxymethylglutaryl 辅酶 -- reductase ) ,它的活动或蛋白质层次在 prl1 幼苗被减少。然而,导出 MVA 的结束产品(甾醇) 的累积在变异的幼苗是未改变的。蔗糖补充到野类型的幼苗 phenocopied prl1 变化以 isoprenoid 新陈代谢,建议观察 isoprenoid 显型从增加的糖累积导致 prl1 异种。在摘要, PRL1 看起来与糖,荷尔蒙,和压力回答协调 isoprenoid 新陈代谢。Ursula Flores-Perez Jordi Perez-Gil Marta Closa Louwrance R Wright Patricia Botella-Pavia Michael A. Phillips Albert Ferrer Jonathan Gershenzon Manuel Rodriguez-Concepcion 2010Molecular Plant2010,3,1:5
7Surviving Sepsis Campaign: International guidelines for management of severe sepsis and septic shock: 2008显示文摘R Phillip Dellinger Mitchell M. Levy Jean M. Carlet Julian Bion Margaret M. Parker Roman Jaeschke Konrad Reinhart Derek C. Angus Christian Brun-Buisson Richard Beale Thierry Calandra Jean-Francois Dhainaut Herwig Gerlach Maurene Harvey John J. Marini John 2008Critical Care Medicine2008,,1:4
8Suicide rates in China, 1995–99显示文摘Michael R Phillips Xianyun Li Yanping Zhang 2002The Lancet2002,,9309:3
9Changing local geographies of private residential care for older people 1983–1999: lessons for social policy in England and Wales显示文摘Gavin J Andrews David R Phillips 2002Social Science & Medicine2002,,1:3
10Aperture averaging of optical scintillations:power fluctuations and the temporal spectrum 显示文摘ANDREWS L C PHILLIPS R L HOPEN C Y 2000Wave Random Media2000,10,1:2
11Risk factors for suicide in China: a national case-control psychological autopsy study显示文摘Michael R Phillips Gonghuan Yang Yanping Zhang Lijun Wang Huiyu Ji Maigeng Zhou 2002The Lancet2002,,9347:2
12Adsorption of Salmonella enteritidis by cetylpyridinium exchanged montmorillonite clays显示文摘HERRERA P BURGHARDY R C PHILLIPS T D 2000Microbiology2000,74,:2
13Airbome laser hydrography in Australia 显示文摘PENNY M F ABBOT R H PHILLIPS D M 1986App Opt1986,25,13:2
14Risk factors for suicide in China: a national case-control psychological autopsy study显示文摘Michael R Phillips Gonghuan Yang Yanping Zhang Lijun Wang Huiyu Ji Maigeng Zhou 2002The Lancet . 2002 (9347)2002,,:2
15The Surviving Sepsis Campaign: Results of an international guideline-based performance improvement program targeting severe sepsis显示文摘Mitchell M. Levy R Phillip Dellinger Sean R. Townsend Walter T. Linde-Zwirble John C. Marshall Julian Bion Christa Schorr Antonio Artigas Graham Ramsay Richard Beale Margaret M. Parker Herwig Gerlach Konrad Reinhart Eliezer Silva Maurene Harvey Susan Rega 2010Critical Care Medicine2010,,2:2
16Monsoonal precipitation responses of shrubs in a cold desert community of the Colorado Plateau显示文摘Lin J Phillips S Ehleringer J R 1996Oecologia1996,106,:1
17Temperature modulation of the stereochemistry of enzymatic catalysis:prospects for exploitation 显示文摘Phillips R S 1995Trends in Biochemistry1995,14,1:1
18Face recognition:A literature survey显示文摘ZHAO W CHELLAPPA R PHILLIPS P J 2003ACM Computing Surveys2003,35,4:1
19Resurreccion,Consumer- Based Optimization of a Third-Generation Product Made from Peanut and Rice Flour 显示文摘I D Choi R D Phillips A V A 2007Journal of Food Science2007,72,7:1
20Plant regeneratiaon from tissue culture of maize显示文摘GREEN C E PHILLIPS R L 1995Crop Sci1995,15,:1
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