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121篇 您的检索式:作者名="Sandra O"
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1血管性认知损害诊断的进一步规范化:血管性认知损害分类共识研究组指南显示文摘引言血管性认知损害(vascular cognitive impairment,VCI)诊断共识的缺乏(体现为多种不同评估方案的使用),妨碍了对其理解和治疗的推进.多个国家的大量临床医生和研究人员参与了2个阶段血管性认知损害分类共识研究(Vascular Impairment of Cognition Classification Consensus Study,VICCCS),旨在就VCI的诊断原则(VICCCS-1)和诊断方案(VICCCS-2)达成一致意见.本文提供了VICCCS-2的相关内容.方法使用VICCCS-1达成的原则和已发表的诊断指南作为在线德尔菲(Delphi)调查的参考基点,以期对VCI的临床诊断达成共识.结果共进行了6轮调查,每轮有65~79名专家参与,他们就VICCCS修订的轻度和重度VCI的诊断指南达成共识,并肯定了美国国立神经疾病与卒中研究所-加拿大卒中网(National Institute of Neurological Disorders and Stroke–Canadian Stroke Network,NINDS-CSN)发布的神经心理学评估方案和对影像学检查的推荐意见.讨论VICCCS-2建议规范化应用NINDS-CSN推荐的神经心理学和影像学评估方案诊断VCI,以促进研究协作.Olivia A. Skrobot Sandra E. Black Christopher Chen Charles DeCarli Timo Erkinjuntti Gary A. Ford Rajesh N. Kalaria John O'Brien Leonardo Pantoni Florence Pasquier Gustavo C. Roman Anders Wallin Perminder Sachdev Ingmar Skoog the VICCCS group Yoav Ben-Shlomo Anthony P. Passmore Seth Love Patrick G. Kehoe 朱婷珂 徐俊 2018国际脑血管病杂志2018,26,4:58
2Pentoxifylline 通过 TNF- 合成和 TGF-1 基因表示的下面规定改进肝新生显示文摘 AIM:To investigate the mechanism of pentoxifylline(PTX)improvement in liver regeneration.RESULTS:Rats were randomized into 4 groups:Control rats;Sham-sham-operation rats;Saline-70% hepatectomy plus saline solution;PTX-70%hepatectomy plus PTX.At 2 and 6 h after hepatectomy,aspartate aminotransferase,alanine aminotransferase,tumor necrosis factor(TNF)-α and interleukin-6(IL-6)serum and hepatic tissue levels were determined.Tumor growth factor(TGF)-β1 gene expression in liver tissue was evaluated 24 h after hepatectomy by quantitative reverse transcriptase polymerase chain reaction analysis.Proliferation was analyzed by mitotic index and proliferating cell nuclear antigen(PCNA)staining 48 h after hepatectomy.RESULTS:TNF-α and IL-6 serum levels increased at 2 and 6 h after hepatectomy.At 2 h after hepatectomy serum PTX was reduced but not hepatic levels of TNF-α and IL-6.A decrease in liver TGF-β1 gene expression and an increase in mitotic index and PCNA after hepatectomy were observed in the PTX treatment group in comparison to the saline group.CONCLUSION:PTX improves liver regeneration by a mechanism related to down regulation of TNF-α production and TGF-β1 gene expression.Rodrigo Bronze Martino Ana Maria Mendona Coelho Márcia Saldanha Kubrusly Regina Leito Sandra Nassa Sampietre Marcel Cerqueira Cesar Machado Telesforo Bacchella Luiz Augusto Carneiro D’Albuquerque 2012World Journal of Gastrointestinal Surgery2012,4,6:2
3Selective ligninolysis of wheat straw and wood chips by the white-rot fungus Lentinula edodes and its influence on in vitro rumen degradability显示文摘Background: The present work investigated the influence of lignin content and composition in the fungal treatment of lignocellulosic biomass in order to improve rumen degradability. Wheat straw and wood chips,differing in lignin composition, were treated with Lentinula edodes for 0, 2, 4, 8 and 12 wk and the changes occurring during fungal degradation were analyzed using pyrolysis-gas chromatography-mass spectrometry and detergent fiber analysis.Results: L. edodes preferentially degraded lignin, with only limited cellulose degradation, in wheat straw and wood chips, leaving a substrate enriched in cellulose. Syringyl(S)-lignin units were preferentially degraded than guaiacyl(G)-lignin units, resulting in a decreased S/G ratio. A decreasing S/G ratio(wheat straw: r =-0.72, wood chips: r =-0.75) and selective lignin degradation(wheat straw: r =-0.69, wood chips: r =-0.88) were correlated with in vitro gas production(IVGP), a good indicator for rumen degradability.Conclusions: L. edodes treatment increased the IVGP of wheat straw and wood chips. Effects on IVGP were similar for wheat straw and wood chips indicating that lignin content and 3D-structure of cell walls influence in vitro rumen degradability more than lignin composition.Sandra J.A.van Kuijk José C.del Río Jorge Rencoret Ana Gutiérrez Anton S.M.Sonnenberg Johan J.P.Baars Wouter H.Hendriks John W.Cone 2017Journal of Animal Science and Biotechnology2017,8,2:2
4Neuroimaging standards for research into small vessel disease and its contribution to ageing and neurodegeneration显示文摘Joanna M Wardlaw Eric E Smith Geert J Biessels Charlotte Cordonnier Franz Fazekas Richard Frayne Richard I Lindley John T O’Brien Frederik Barkhof Oscar R Benavente Sandra E Black Carol Brayne Monique Breteler Hugues Chabriat Charles DeCarli Frank-Erik de 2013Lancet Neurology2013,,8:2
5Quantitative analysis of polycyclic aromatic hydrocarbons in sewage sludge from wastewater treatment plants显示文摘Sandra P Guillam(o)n M Barcel(o) D 2001Journal of Chromatography2001,938,:1
6Ruin theory with excess of loss reinsurance and reinstatements显示文摘Hansj(o)rg Albrecher Sandra Haas 0,,20:1
7The Toxicology of Perfluorooctanoate显示文摘Gerald L. Kennedy John L. Butenhoff Geary W. Olsen John C. O’Connor Andrew M. Seacat Roger G. Perkins Lisa B. Biegel Sandra R. Murphy David G. Farrar 2004Critical Reviews in Toxicology2004,,4:1
8The larvicidal activity of Agave sisalana against L4 larvae of Aedes aegypti is mediated by internal necrosis and inhibition of nitric oxide production显示文摘Fabiola C. Nunes Jacqueline A. Leite Louise H. G. Oliveira Patrícia A. P. S. Sousa Márcio C. Menezes Jo?o P. S. Moraes Sandra R. Mascarenhas Valdir A. Braga 2015Parasitology Research2015,,2:1
9The global re-cycling of persistent organic pollutants s strongly retarded by soils 显示文摘Wendy A O Knut B Sandra N M 2003Environ Pollution2003,121,:1
10转型中零售业的营销走向显示文摘零售连锁店不再是只管购物那么简单了。如今.他们也忙于教育和娱乐消费者.并且随着店家通过互联网、信息服务亭(它相当于一台接入了局域网或互联网的小型电脑)和其他技术手段.以全新的方式同顾客发生联系.他们能够对营销活动的效果进行评估.了解哪些营销活动发挥了作用.哪些是无用功——以仔细评估大手笔电视媒体投放的效果。Sandra O'Loughlin 于龙飞 2007成功营销2007,,6:1
11Induction of cytochrome c-mediated apoptosis by amyloid β 25- 35 requires functional mitochondria 显示文摘Sandra M C Russell H S Catarina R O 2002Brain Research2002,931,2:1
12Induction of cytochrome e-mediated apoptosis by amyloid β 25-35 requires functional mitochondria显示文摘Sandra M C Russell H S Catarina R O 2002Brain Research2002,931,2:1
13Flow cytometry for basophil activation markers:the measurement of CD203c up-regulation is as reliable as CD63 expression in the diagnosis of cat allergy 显示文摘Annick O Yannick P Sandra M 2007J Im- munol Methods2007,320,12:1
14Challenging the status quo:what mo-tivates proactive behavior显示文摘Sandra O Charlotte F 2007Journal of Occupational and Organizational Psychology2007,80,4:1
15Fasciola hepatica cathepsin L-like proteases: biology, function ,and potential in the development of first generation liver fluke vaccines显示文摘DALTON P NEILL SANDRA O STACK C 2003International Journal for Parasitology2003,33,:1
16Timing-dependent protection of hypertonic saline solution administration in experimental liver ischemia/reperfusion injury显示文摘Estela Regina Ramos Figueira Telesforo Bacchella Ana Maria Mendon?a Coelho Sandra Nassa Sampietre Nilza Aparecida Trindade Molan Regina Maria Cubero Leit?o Marcel Cerqueira Cesar Machado 2010Surgery2010,,3:1
17Incremental Value of Perfusion over Wall‐Motion Abnormalities with the Use of Dobutamine–Atropine Stress Myocardial Contrast Echocardiography and Magnetic Resonance Imaging for Detecting Coronary Artery Disease显示文摘Sandra Nivea dos Reis Saraiva Falc?o Carlos Eduardo Rochitte Wilson Mathias Junior Luiz Quaglia Pedro Alves Lemos Jo?o César Nunes Sbano José Antonio Franchini Ramires Roberto Kalil Filho Jeane Mike Tsutsui 2012Echocardiography2012,,:1
18Neonatal ovarian cysts: pathogenesis, diagnosis and management 显示文摘Sandra S Jack O Haler 1997Pediatr Radiol1997,27,:1
19Growth, fruiting and lignocel- lulolytic enzyme production by the edible mushroom Grifolafron-dosa (maitake) 显示文摘Sandra M Carlos E O Laura L 2012World J Microbiol Biotechnol2012,28,4:1
20HP0953-hypothetical virulence factor overexpresion and localization during Helicobacter pylori infection of gastric epithelium显示文摘BACKGROUND The high prevalence and persistence of Helicobacter pylori(H. pylori) infection, as well as the diversity of pathologies related to it, suggest that the virulence factors used by this microorganism are varied. Moreover, as its proteome contains 340hypothetical proteins, it is important to investigate them to completely understand the mechanisms of its virulence and survival. We have previously reported that the hypothetical protein HP0953 is overexpressed during the first hours of adhesion to inert surfaces, under stress conditions, suggesting its role in the environmental survival of this bacterium and perhaps as a virulence factor.AIM To investigate the expression and localization of HP0953 during adhesion to an inert surface and against gastric(AGS) cells.METHODS Expression analysis was performed for HP0953 during H. pylori adhesion. HP0953 expression at 0,3, 12, 24, and 48 h was evaluated and compared using the Kruskal-Wallis equality-of-populations rank test. Recombinant protein was produced and used to obtain polyclonal antibodies for immunolocalization. Immunogold technique was performed on bacterial sections during adherence to inert surfaces and AGS cells, which was analyzed by transmission electron microscopy. HP0953 protein sequence was analyzed to predict the presence of a signal peptide and transmembrane helices, both provided by the ExPASy platform, and using the GLYCOPP platform for glycosylation sites. Different programs, via, I-TASSER, RaptorX, and HHalign-Kbest, were used to perform three-dimensional modeling.RESULTS HP0953 exhibited its maximum expression at 12 h of infection in gastric epithelium cells.Immunogold technique revealed HP0953 localization in the cytoplasm and accumulation in some peripheral areas of the bacterial body, with greater expression when it is close to AGS cells.Bioinformatics analysis revealed the presence of a signal peptide that interacts with the transmembrane region and then allows the release of the protein to the external environment. The programs also showed a similarity with the Tip-alpha protein of H. pylori. Tip-alpha is an exotoxin that penetrates cells and induces tumor necrosis factor alpha production, and HP0953 could have a similar function as posttranslational modification sites were found;modifications in turn require enzymes located in eukaryotic cells. Thus, to be functional, HP0953 may necessarily need to be translocated inside the cell where it can trigger different mechanisms producing cellular damage.CONCLUSION The location of HP0953 around infected cells, the probable posttranslational modifications, and its similarity to an exotoxin suggest that this protein is a virulence factor.Nancy K Arteaga-Resendiz Gerardo E Rodea Rosa María Ribas-Aparicio Alma L Olivares-Cervantes Juan Arturo Castelán-Vega Joséde Jesús Olivares-Trejo Sandra Mendoza-Elizalde Edgar O López-Villegas Christian Colín Pamela Aguilar-Rodea Alfonso Reyes-López Marcela Salazar García Norma Velázquez-Guadarrama 2022World Journal of Gastroenterology2022,28,29:1
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