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353篇 您的检索式:作者名="Roberts MA"
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1The Deep-Time Digital Earth program:data-driven discovery in geosciences显示文摘Current barriers hindering data-driven discoveries in deep-time Earth(DE)include:substantial volumes of DE data are not digitized;many DE databases do not adhere to FAIR(findable,accessible,interoperable and reusable)principles;we lack a systematic knowledge graph for DE;existing DE databases are geographically heterogeneous;a significant fraction of DE data is not in open-access formats;tailored tools are needed.These challenges motivate the Deep-Time Digital Earth(DDE)program initiated by the International Union of Geological Sciences and developed in cooperation with national geological surveys,professional associations,academic institutions and scientists around the world.DDE’s mission is to build on previous research to develop a systematic DE knowledge graph,a FAIR data infrastructure that links existing databases and makes dark data visible,and tailored tools for DE data,which are universally accessible.DDE aims to harmonize DE data,share global geoscience knowledge and facilitate data-driven discovery in the understanding of Earth’s evolution.Chengshan Wang Robert MHazen Qiuming Cheng Michael HStephenson Chenghu Zhou Peter Fox Shu-zhong Shen Roland Oberhansli Zengqian Hou Xiaogang Ma Zhiqiang Feng Junxuan Fan Chao Ma Xiumian Hu Bin Luo Juanle Wang Craig M.Schiffries 2021National Science Review2021,8,9:14
2A novel role of hematopoietic CCL5 in promoting triple-negative mammary tumor progression by regulating generation of myeloid-derived suppressor cells显示文摘CCL5 是响应压力信号在有免疫力、非有免疫力的房间的一个宽数组表示的 CC chemokine 家庭的一个成员。有先进人的乳癌的 CCL5 表示相互关联。然而,它行动的功能的意义和模式没被建立。这里,我们证明 CCL5 缺乏的老鼠对高度好攻击的、三元组否定的乳房的肿瘤生长抵抗。造血的 CCL5 在这显型是主导的。造血的 CCL5 的缺席由积累 Ly6C +/Gr-1+, 的异常产生导出 myeloid 的 suppressor 房间(MDSC )> 嗨有损害能力到的 和 Ly6G + MDSC 压制 CD8 + T 房间的 cytotoxicity。CCL5 的这些性质在 orthotopic 和自发的乳房的肿瘤被观察。CCL5 的调停抗体的全身的封锁禁止肿瘤前进并且对非产生免疫性的肿瘤提高治疗学的种痘的功效。CCL5 也帮助维持人的 MDSC 的抑制免疫力的能力。我们的学习揭开经由与导出肿瘤的刺激殖民地的因素在合作在骨头髓产生 MDSC 支持乳房的肿瘤前进的造血地导出的 CCL5 的一项新奇、 chemokine 独立的活动。学习在在造血的分隔空间和肿瘤壁龛之间的相互影响上打开可观的灯。因为在正常生理学的这个分子的明显的非必需的性质, CCL5 可以象有 MDSC 渗入的重要数量的大量稳固的肿瘤一样为乳癌在免疫疗法代表一个优秀治疗学的目标。Yan Zhang Dandan Lv Ha-Jeong Kim Robert A Kurt Wen Bu Yi Li Xiaojing Ma 2013Cell Research2013,23,3:9
3Clinical and Genetic Investigation of a Multi-generational Chinese Family Afflicted with Von Hippel-Lindau Disease显示文摘Jingyao Zhang Jie Ma Xiaoyun Du Dapeng Wu Hong Ai Jigang Bai Shunbin Dong Qinling Yang Kai Qu Yi Lyu Robert K Valenzuela Chang Liu 2015Chinese Medical Journal2015,,1:6
4Utility of MtCOI polymerase chain reaction-restriction fragment length polymorphism in differentiating between Q and B whitefly Bemisia tabaci biotypes显示文摘侵略,杀虫药剂抵抗, Q 白苍蝇遗传因子型,逐渐地经由植物材料的调停人的运动包括 US 传播了到另外的国家。我们估计了基于 VspI 的 mtCOI 的用途(线粒体细胞色素 oxidase 我) 是的聚合酶链反应限制碎片长度多型性(PCR-RFLP ) 技术为在亚利桑那把 Q 区分开来与主导的 B 遗传因子型的一种快速、划算、可靠的选择。用定序的标准 mtCOI 基因和 mtCOI PCR-RFLP 技术,我们八个白苍蝇五个个人拉紧的 biotyped 各在亚利桑那在不同地点从一品红和棉花收集了。完全的词语索引在二个方法之间被观察,与作为象 B 遗传因子型的 Q 遗传因子型和五件样品被识别的三紧张。我们也在在 GenBank 数据库当前可得到的 B 和 Q 遗传因子型白人苍蝇为 VspI 多型性扫描了 mtCOI 基因序列。这全球屏蔽分别地为 Q 和 B 遗传因子型揭示了三和四种 VspI 多态的类型的存在。不过,所有三个 VspI 多态的 Q 遗传因子型白人苍蝇分享了能被用来把 Q 遗传因子型区分开来与识别的四个 VspI 多态的 B 遗传因子型白人苍蝇的一个普通、唯一的 VspI 地点。这些结果证明基于 VspI 的 mtCOI 基因 PCR-RFLP 为区分白色在 US 并且在其它地方飞的 Q 和 B 遗传因子型提供一个可靠诊断工具。Wei-Hua Ma Xian-Chun Li Timothy J. Dennehy Chao-Liang Lei Mo Wang Benjamin A. Degain Robert L. Nichols 2009Insect Science2009,16,2:5
5Mesenchymal stem cell treatment improves outcome of COVID-19 patients via multiple immunomodulatory mechanisms显示文摘The infusion of coronavirus disease 2019(COVID-19)patients with mesenchymal stem cells(MSCs)potentially improves clinical symptoms,but the underlying mechanism remains unclear.We conducted a randomized,single-blind,placebo-controlled(29 patients/group)phase II clinical trial to validate previous findings and explore the potential mechanisms.Patients treated with umbilical cord-derived MSCs exhibited a shorter hospital stay(P=0.0198)and less time required for symptoms remission(P=0.0194)than those who received placebo.Based on chest images,both severe and critical patients treated with MSCs showed improvement by day 7(P=0.0099)and day 21(P=0.0084).MSC-treated patients had fewer adverse events.MSC infusion reduced the levels of C-reactive protein,proinflammatory cytokines,and neutrophil extracellular traps(NETs)and promoted the maintenance of SARS-CoV-2-specific antibodies.To explore how MSCs modulate the immune system,we employed single-cell RNA sequencing analysis on peripheral blood.Our analysis identified a novel subpopulation of VNN2+hematopoietic stem/progenitorlike(HSPC-like)cells expressing CSF3R and PTPRE that were mobilized following MSC infusion.Genes encoding chemotaxis factors—CX3CR1 and L-selectin—were upregulated in various immune cells.MSC treatment also regulated B cell subsets and increased the expression of costimulatory CD28 in T cells in vivo and in vitro.In addition,an in vivo mouse study confirmed that MSCs suppressed NET release and reduced venous thrombosis by upregulating kindlin-3 signaling.Together,our results underscore the role of MSCs in improving COVID-19 patient outcomes via maintenance of immune homeostasis.Rongjia Zhu Tingdong Yan Yingmei Feng Yan Liu Hongcui Cao Gongxin Peng Yanlei Yang Zhen Xu Jingqi Liu Wei Hou Xiaoyue Wang Zhe Li Luchan Deng Shihua Wang Jing Li Qin Han Hongling Li Guangliang Shan Yinghao Cao Xingyan An Jianshe Yan Zhonghui Zhang Huafei Li Xuebin Qu Jiaqi Zhu Shumin Zhou Jiao Wang Fengchun Zhang Jinming Gao Ronghua Jin Dayong Xu Yan-Qing Ma Tao Huang Shuang Peng Zhi Zheng Ilia Stambler Eric Gilson Lee Wei Lim Alexey Moskalev Antonio Cano Sasanka Chakrabarti Brun Ulfhake Huanxing Su Haoying Xu Sihuan Xu Feng Wei Holly MBrown-Borg Kyung-Jin Min Georgina Ellison-Hughes Calogero Caruso Kunlin Jin Robert Chunhua Zhao 2021Cell Research2021,31,12:5
6Evaluation of endocrine disruption and dioxin-like effects of organic extracts from sewage sludge in autumn in Beijing, China显示文摘污水污泥的有效处理和利用上的学习最近是在中国种兴趣的目标。然而,潜在的风险与有毒的 organics,重金属和病原的微生物由于它的污染与污泥的使用被联系。在这研究,一个屏蔽评价在在北京从 17 不同污水处理植物收集的污水污泥样品上被进行,基于批在 vitro 生物鉴定,包括一套 recombinant 基因酵母为内分泌的混乱的试金,并且用为芳基烃受体( Ah-R )的 H4IIE 房间的 ethoxy resorufin-O-deethylase (侵蚀)试金论战的活动。我们的结果建议了那雌激素受体的中等层次论战的活动(0.9 ng E2 愠映杯吗?Cao LIU Yiping XU Mei MA Bingbin HUANG Jingdong WU Qingyi MENG Zijian WANG Robert Alan GEARHEART 2014Frontiers of Environmental Science & Engineering2014,8,3:4
7Mass spectrometry-based proteomics and peptidomics for systems biology and biomarker discovery显示文摘科学界在生物学为它的应用在集体基于 spectrometry 的 proteomics 和 peptidomics 的领域里显示出大兴趣。Proteomics 技术演变生产涉及的蛋白质或肽的大数据集合各种各样生物学并且为复杂生物学的问题产生可试验的假设的疾病前进过程。这评论包括生物学的材料选择,样品准备,分离技术,肽破碎, translational 以后修正, quantification,生物信息学,和 biomarker 在 proteomics 和 peptidomics 提供介绍给相关话题发现和确认。另外,为 proteomics 和 peptidomics 的当前的文学,留下的挑战,和新兴的技术被介绍。Robert CUNNINGHAM Di MA Lingjun LI 2012Frontiers in Biology2012,7,4:3
8CrN-Encapsulated Hollow Cr-N-C Capsules Boosting Oxygen Reduction Catalysis in PEMFC显示文摘Understanding the origin of the catalytic activity for the development of efficient catalysts is critical yet challenging.Herein,we report a simple strategy for the synthesis of chromium nitride nanoparticles(CrNNPs)encapsulated into hollow chromium-nitrogen-carbon capsules(CrN@H-Cr-N_(x)-C).The CrN@H-Cr-N_(x)-C demonstrated excellent electrocatalytic activity for the oxygen reduction reaction(ORR)in acidic solutions.When applied as a cathode material in a proton-exchange membrane fuel cell(PEMFC),the CrN@H-Cr-N_(x)-C achieved outstanding initial performance,which is better than that of the PEMFC with H-Cr-N_(x)-C cathode material.The CrN@H-Cr-N_(x)-C cathode also showed good stability over 110 h of operation.These results demonstrated that the coexistence of atomically dispersed CrN_(x) sites and sufficient CrNNPs is essential for excellent PEMFC performances.Density functional theory(DFT)studies further corroborated that CrNNPs can boost the ORR activity of H-Cr-N_(x)-C.This finding opens a new avenue for the fabrication of low-cost,highly active,and durable ORR catalysts for PEMFC and other applications.Hui Yang Xu Wang Tao Zheng Nelly Cantillo Cuello Gabriel Goenaga Thomas A.Zawodzinski He Tian Joshua T.Wright Robert W.Meulenberg Xiangke Wang Zhenhai Xia Shengqian Ma 2021CCS Chemistry2021,3,5:2
9Acute pancreatitis and organ failure: Pathophysiology, natural history, and management strategies显示文摘Michael G. T. Raraty FRCS PhD Saxon Connor FRACS David N. Criddle PhD Robert Sutton DPhil FRCS John P. Neoptolemos MA MD FRCS 2004Current Gastroenterology Reports2004,,2:2
10Will high-frequency trading practices transform the financial markets in the Asia Pacific Region?显示文摘High-frequency trading(HFT)practices in the global financial markets involve the use of information and communication technologies(ICT),especially the capabilities of high-speed networks,rapid computation,and algorithmic detection of changing information and prices that create opportunities for computers to effect low-latency trades that can be accomplished in milliseconds.HFT practices exist because a variety of new technologies have made them possible,and because financial market infrastructure capabilities have also been changing so rapidly.The U.S.markets,such as the National Association for Securities Dealers Automated Quote(NASDAQ)market and the New York Stock Exchange(NYSE),have maintained relevance and centrality in financial intermediation in financial markets settings that have changed so much in the past 20 years that they are hardly recognizable.In this article,we explore the technological,institutional and market developments in leading financial markets around the world that have embraced HFT trading.From these examples,we will distill a number of common characteristics that seem to be in operation,and then assess the extent to which HFT practices have begun to be observed in Asian regional financial markets,and what will be their likely impacts.We also discuss a number of theoretical and empirical research directions of interest.Robert J.Kauffman Yuzhou Hu Dan Ma 2015Financial Innovation2015,1,1:2
11Possible Involvement of Stress-Activated Protein Kinase Signaling Pathway and Fas Receptor Expression in Prevention of Ischemia/Reperfusion-Induced Cardiomyocyte Apoptosis by Carvedilol显示文摘Tian-Li Yue Xin-Liang Ma Xinkang Wang Anne M. Romanic Gao-lin Liu Calvert Louden Juan-Li Gu Sanjay Kumar George Poste Robert R. Ruffolo Giora Z. Feuerstein 1998Circulation Research1998,,2:2
12Dual targeting of mTORC1/C2 complexes enhances histone deacetylase inhibitor-mediated anti-tumor efficacy in primary HCC cancer in vitro and in vivo显示文摘Huanjie Shao Chun Gao Haikuo Tang Hao Zhang Lewis R. Roberts Bonnie L. Hylander Elizabeth A. Repasky Wen W. Ma Jingxin Qiu Alex A. Adjei Grace K. Dy Chunrong Yu 2011Journal of Hepatology2011,,1:2
13Data-Driven Discovery in Mineralogy: Recent Advances in Data Resources, Analysis, and Visualization显示文摘Large and growing data resources on the diversity, distribution, and properties of minerals are ushering in a new era of data-driven discovery in mineralogy. The most comprehensive international mineral database is the IMA database, which includes information on more than 5400 approved mineral species and their properties, and the mindat.org data source, which contains more than 1 million species/locality data on minerals found at more than 300 000 localities. Analysis and visualization of these data with diverse techniques—including chord diagrams, cluster diagrams, Klee diagrams, skyline diagrams, and varied methods of network analysis—are leading to a greater understanding of the co-evolving geosphere and biosphere. New data-driven approaches include mineral evolution, mineral ecology, and mineral network analysis—methods that collectively consider the distribution and diversity of minerals through space and time. These strategies are fostering a deeper understanding of mineral co-occurrences and, for the first time, facilitating predictions of mineral species that occur on Earth but have yet to be discovered and described.Robert M. Hazen Robert T. Downs Ahmed Eleish Peter Fox Olivier C. Gagné Joshua J. Golden Edward S. Grew Daniel R. Hummer Grethe Hystad Sergey V. Krivovichev Congrui Li Chao Liu Xiaogang Ma Shaunna M. Morrison Feifei Pan Alexander J. Pires Anirudh Prabhu Jolyon Ralph Simone E. Runyon Hao Zhong 2019Engineering2019,5,3:2
14Hyperexcitable neurons and altered non-neuronal cells in the compressed spinal ganglion显示文摘The cell body or soma in the dosal root ganglion(DRG) is normally excitable and this excitability can increase and persist after an injury of peripheral sensory neurons.In a rat model of radicular pain,an intraforaminal implantation of a rod that chronically compressed the lumbar DRG('CCD' model) resulted in neuronal somal hyperexcitability and spontaneous activity that was accompanied by hyperalgesia in the ipsilateral hind paw.By the 5th day after onset of CCD,there was a novel upregulation in neuronal expression of the chemokine,monocyte chemoattractant protein-1(MCP-1 or CCL2) and also its receptor,CCR2.The neurons developed,in response to topically applied MCP-1,an excitatory response that they normally do not have.CCD also activated non-neuronal cells including,for example,the endothelial cells as evidenced by angiogenesis in the form of an increased number of capillaries in the DRG after 7 days.A working hypothesis is that the CCD induced changes in neurons and non-neuronal cells that may act together to promote the survival of the injured tissue.The release of ligands such as CCL2,in addition to possibly activating nociceptive neurons(maintaining the pain),may also act to preserve injured cells in the face of ischemia and hypoxia,for example,by promoting angiogenesis.Thus,somal hyperexcitability,as often said of inflammation,may represent a double edged sword.Robert H. LaMotte Chao MA 2008生理学报2008,60,5:2
15Cholesterol and Bile Acid Metabolism Are Impaired in Mice Lacking the Nuclear Oxysterol Receptor LXRα显示文摘Daniel J Peet Stephen D Turley Wenzhen Ma Bethany A Janowski Jean-Marc A Lobaccaro Robert E Hammer David J Mangelsdorf 1998Cell1998,,:2
16Factors associated with 5-year survival of combined hepatocellular and cholangiocarcinoma显示文摘BACKGROUND Combined hepatocellular and cholangiocarcinoma(HCC/CC)is a rare primary hepatic malignancy which carries a poor prognosis due to its aggressive nature.Few centers have enough cases to draw definitive conclusions and there is limited understanding of prognosis.Given the rarity of HCC/CC,an analysis of large national cancer database was needed to obtain larger number of HCC/CC cases.AIM To identify associated factors for 5-year survival of HCC/CC.METHODS We conducted a retrospective study of The Surveillance,Epidemiology,and End Results(SEER)database obtained from SEER*Stat 8.3.6 software.Previously defined histology code 8180 for the International Classification of Disease for Oncology,3rd edition was used to identify HCC/CC cases from 2004 to 2015.We collected demographics,American Joint Committee on Cancer(AJCC)stage,treatment,tumor size,and survival data.These data were converted to categorical variables.The Shapiro-Wilk normality test was used to assess normal distribution.Mann-Whitney U test was used to compare continuous variables without normal distribution,and t-test was used to compare continuous variables with a normal distribution.The Kaplan-Meier survival curve analyzed 5-year survival.Univariate and multivariate logistic regression model was used to analyze factors associated with 5-year survival.Multivariate Cox proportional hazard regression was done on 5-year survival.We defined P<0.05 was statistically significant.RESULTS We identified 497 patients with the following characteristics:Mean age 62.4 years(SD:11.3),149(30.0%)were female,racial distribution was:276(55.5%)white,53(10.7%)black,84(16.9%)Asian and Pacific Islander(API),77(15.5%)Hispanic,and 7(1.4%)others or unknown.Stage I/II disease occurred in 41.5%and tumor size<50 mm was seen in 35.6%of patients.Twenty-four(4.8%)received locoregional therapy(LRT),119(23.9%)underwent resection,and 50(10.1%)underwent liver transplantation.The overall median survival was 6 mo[Interquartile range(IQR):1-22].After multivariate logistic regression,tumor size<50 mm[Odds ratios(OR):2.415,P=0.05],resection(OR:12.849,P<0.01),and transplant(OR:27.129,P<0.01)showed significance for 5-year survival.Age>60,sex,race,AJCC stages,metastasis,and LRT were not significant.However,API vs white showed significant OR of 2.793(CI:1.120-6.967).Cox proportional hazard regression showed AJCC stages,tumor size<50 mm,LRT,resection,and transplant showed significant hazard ratio.CONCLUSION HCC/CC patients with tumor size<50 mm,resection,and transplant were associated with an increase in 5-year survival.API showed advantageous OR and hazard ratios over white,black.Tomoki Sempokuya Eric A Wien Robert J Pattison Jihyun Ma Linda L Wong 2020World Journal of Hepatology2020,12,11:2
17Cardiovascular biomarkers in CKD:pathophysiology and implications for clinical management of cardiac disease显示文摘Roberts MA Hare DL Ratnaike S 2006Am J Kidney Dis2006,48,:1
18Microvascular injury, thrombosis, inflammation, and apoptosis in the path- ogenesis of heatstroke : a study in baboon model 显示文摘Roberts GT Ghebeh H Chishti MA 2008Arte- rioscler Thromb Vasc Biol2008,28,6:1
19Tyrosine kinase inhibitor therapy induces remission in a patient with refractory EBF1-PDGFRB-positive acute lymphoblastic leukemia显示文摘Weston BW Hayden MA Roberts KG 2013J Clin Oncol2013,31,25:1
20New class of transfo-rming growth factors potentiated by epidermal growth factor: isolation from non neoplastic tissues显示文摘Roberts AB Anzano MA Lamb LC 1981Pmc Natl Acad Sci USA1981,78,9:1
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