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807篇 您的检索式:作者名="Williams MA"
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1高危患者目标血压与心血管病预后显示文摘指南推荐血压目标值应〈140/90 mmHg(1mmHg=0.133kPa)以减少心血管事件的发生。但与其他心血管病预后(如冠状动脉事件)相比,包括脑卒中及心力衰竭在内的心血管病预后与收缩压下降关系更密切。一些心血管事件(如冠状动脉事件)风险在收缩压低时亦增高,风险-收缩压关系呈J形曲线,而脑卒中与血压不是J形曲线关系。B?hm M Schumacher H Teo KK Lonn EM Mahfoud F Mann JF Mancia G Redon J Schmieder RE Sliwa K Weber MA Williams BYusuf S 曲浥晨 叶鹏 2017中华高血压杂志2017,25,6:14
2Impact of a nationwide training program for neonatal resuscitation in China显示文摘XU Tao WANG Hui-shan YE Hong-mao YU Ren-jie HUANG Xing-hua WANG Dan-hua Wang Li-xin FENG Qi GONG Li-min MA Yi William Keenan Susan Niermeyer 2012Chinese Medical Journal2012,,8:13
3Insights into gastric neuroendocrine tumors burden显示文摘Type 1 gastric neuroendocrine tumors(g NETs)are usually small lesions,restricted to mucosal and sub-mucosal layers of corpus and fundus,with low aggressive behavior,for the majority of cases.Nevertheless,some cases present aggressive behavior.The increasing incidence of g NETs brings together a new relevant problem:how to identify potentially aggressive type 1 g NETs.The challenging problem seems to be finding out signs or features able to predict potentially aggressive cases,allowing a tailored approach,since the involved societies dedicated to provide guidelines for management of these neoplasms apparently failed in producing staging systems able to accurately predict prognosis of these tumors.Additionally,it is also important to try to find out explanations for increasing incidence,as well as to identify potential targets aiming to reach better control of this neoplasia.Here,we discuss potential pathways implicated in aggressive behavior,as well as new strategies to improve clinical management of these tumors.Taíssa Maíra Thomaz Araújo Williams Fernandes Barra André Salim Khayat Paulo Pimentel de Assumpcao 2017Chinese Journal of Cancer Research2017,29,2:7
4A GLP-1 analog lowers ER stress and enhances protein folding to ameliorate homocysteine-induced endothelial dysfunction显示文摘Hyperhomocysteinemia(HHcy)is an independent risk factor for cardiovascular diseases and increases mortality in type 2 diabetic patients.HHcy induces endoplasmic reticulum(ER)stress and oxidative stress to impair endothelial function.The glucagon-like peptide 1(GLP-1)analog exendin-4 attenuates endothelial ER stress,but the detailed vasoprotective mechanism remains elusive.The present study investigated the beneficial effects of exendin-4 against HHcy-induced endothelial dysfunction.Exendin-4 pretreatment reversed homocysteine-induced impairment of endothelium-dependent relaxations in C57BL/6 mouse aortae ex vivo.Four weeks subcutaneous injection of exendin-4 restored the impaired endothelial function in both aortae and mesenteric arteries isolated from mice with diet-induced HHcy.Exendin-4 treatment lowered superoxide anion accumulation in the mouse aortae both ex vivo and in vivo.Exendin-4 decreased the expression of ER stress markers(e.g.,ATF4,spliced XBP1,and phosphorylated eIF2α)in human umbilical vein endothelial cells(HUVECs),and this change was reversed by cotreatment with compound C(CC)(AMPK inhibitor).Exendin-4 induced phosphorylation of AMPK and endothelial nitric oxide synthase in HUVECs and arteries.Exendin-4 increased the expression of endoplasmic reticulum oxidoreductase(ERO1α),an important ER chaperone in endothelial cells,and this effect was mediated by AMPK activation.Experiments using siRNA-mediated knockdown or adenoviral overexpression revealed that ERO1αmediated the inhibitory effects of exendin-4 on ER stress and superoxide anion production,thus ameliorating HHcy-induced endothelial dysfunction.The present results demonstrate that exendin-4 reduces HHcy-induced ER stress and improves endothelial function through AMPK-dependent ERO1αupregulation in endothelial cells and arteries.AMPK activation promotes the protein folding machinery in endothelial cells to suppress ER stress.Chak Kwong Cheng Jiang-Yun Luo Chi Wai Lau William Chi-shing Cho Chi Fai Ng Ronald Ching Wan Ma Xiao Yu Tian Yu Huang 2021Acta Pharmacologica Sinica2021,42,10:6
5Three global conditions for biodiversity conservation and sustainable use: an implementation framework显示文摘‘Nature and its vital contributions to people,which together embody biodiversity and ecosystem functions and services,are deteriorating worldwide’[1].The United Nations Convention on Biological Diversity(CBD)is intended to ensure conservation of biodiversity,its wise use,and sharing of benefits from use of genetic resources.Through it,the Strategic Plan(SP)for Biodiversity 2011-2020 was created to make progress toward a vision of humanity‘Living in Harmony with N ature’by 2050[2].W hen that vision is realized,biodiversity will be valued,conserved,restored,and wisely used,so it can maintain ecosystem services and sustain a healthy planet.Harvey Locke Erie C.Ellis Oscar Venter Richard Schuster Keping Ma Xiaoli Shen Stephen Woodley Naomi Kingston Nina Bhola Bernardo B.N.Strassburg Axel Paulsch Brooke Williams James E.M.Watson 2019National Science Review2019,6,6:6
6Liver-resident NK cells suppress autoimmune cholangitis and limit the proliferation of CD4^(+) T cells显示文摘Liver-resident NK cells are distinct from conventional NK cells and play an important role in the maintenance of liver homeostasis.How liver-resident NK cells participate in autoimmune cholangitis remains unclear.Here,we extensively investigated the impact of NK cells in the pathogenesis of autoimmune cholangitis utilizing the well-established dnTGFβRII cholangitis model,NK cell-deficient(Nfil3−/−)mice,adoptive transfer and in vivo antibody-mediated NK cell depletion.Our data demonstrated that disease progression was associated with a significantly reduced frequency of hepatic NK cells.Depletion of NK cells resulted in exacerbated autoimmune cholangitis in dnTGFβRII mice.We further confirmed that the DX5−CD11c^(hi) liver-resident NK cell subset colocalized with CD4^(+) T cells and inhibited CD4^(+) T cell proliferation.Gene expression microarray analysis demonstrated that liver-resident NK cells had a distinct gene expression pattern consisting of the increased expression of genes involved in negative regulatory functions in the context of the inflammatory microenvironment.Zhi-Bin Zhao Fang-Ting Lu Hong-Di Ma Yin-Hu Wang Wei Yang Jie Long Qi Miao Weici Zhang Zhigang Tian William M.Ridgway Jie Cao M.Eric Gershwin Zhe-Xiong Lian 2020Cellular & Molecular Immunology2020,17,2:4
7DID Code:A Bridge Connecting the Materials Genome Engineering Database w让h Inheritable Integrated Intelligent Manufacturing显示文摘A data identifier(DID)is an essential tag or label in all kinds of databases—particularly those related to integrated computational materials engineering(ICME),inheritable integrated intelligent manufacturing(I3M),and the Industrial Internet ofThings.With the guidance and quick acceleration of the developme nt of advanced materials,as envisioned by official documents worldwide,more investigations are required to construct relative numerical standards for material informatics.This work proposes a universal DID format consisting of a set of build chains,which aligns with the classical form of identifier in both international and national standards,such as ISO/IEC 29168-1:2000,GB/T 27766-2011,GA/T 543.2-2011,GM/T 0006-2012,GJB 7365-2011,SL 325-2014,SL 607-201&WS 363.2-2011,and QX/T 39-2005.Each build chain is made up of capital letters and numbers,with no symbols.Moreover,the total length of each build chain is not restricted,which follows the formation of the Universal Coded Character Set in the international standard of ISO/IEC 10646.Based on these rules,the proposed DID is flexible and convenient for extendi ng and sharing in and between various cloud-based platforms.Accordingly,classical two-dimensional(2D)codes,including the Hanxin Code,Lots Perception Matrix(LP)Code,Quick Response(Q.R)code,Grid Matrix(GM)code,and Data Matrix(DM)Code,can be constructed and precisely recognized and/or decoded by either smart phones or specific machines.By utilizing these 2D codes as the fingerprints of a set of data linked with cloud-based platforms,progress and updates in the composition-processing-structure-property-performance workflow process can be tracked spontaneously,paving a path to accelerate the discovery and manufacture of advanced materials and enhance research productivity,performance,and collaboration.William Yi Wang Peixuan Li Deye Lin Bin Tang Jun Wang Quanmei Guan Qian Ye Haixing Dai Jun Gao Xiaoli Fan Hongchao Kou Haifeng Song Feng Zhou Jijun Ma Zi-Kui Liu Jinshan Li Weimin Liu 2020Engineering2020,6,6:4
8医学分子生物学CRISPR基因编辑与社会法规的进步与完善显示文摘利用CRISPR基因技术体系进行精密编辑,标志着人类攻克遗传疾病在理论上已进入新阶段,临床应用已有了实质性的突破,对促进人类健康和社会的和谐具有重大意义。本文对该技术在临床的应用、社会影响、西方国家对该技术社会伦理道德的界定和法律法规的发展,以及CRISPR精密编辑技术对科研与社会伦理道德范畴的精细化进行了探讨。CRISPR在生殖生物学领域的应用,将导致生物医学领域发生社会发展的重大变革。CRISPR精准基因编辑和干细胞技术的巨大科研前景和商业价值,可能会带来一系列的问题。CRISPR基因精密编辑在生物医学中的应用对社会、对各级医疗机构、医学院校和研究机构均有重要的影响,卫生主管部门应借鉴国际上相关做法,制定科学研究伦理道德的相关政策法规,使中国在医学分子生物学领域作出应有的贡献。杨蓉 梁瑜 于秋霞 吴亚君 雷新娟 孙渝婷 王丹 张伟 周鑫 李忠光 王李阳 MengMeng Xu William Isaacs Jianjie Ma 徐学红 2019医学与社会2019,32,6:3
9OsPKpa_1 encodes a plastidic pyruvate kinase that affects starch biosynthesis in the rice endosperm显示文摘Pyruvate kinase(PK) is a key enzyme in glycolysis and carbon metabolism. Here, we isolated a rice(Oryza sativa) mutant, w59, with a white-core floury endosperm. Map-based cloning of w59 identified a mutation in OsPKpa_1, which encodes a plastidic isoform of PK(PKp). OsPKpa_1 localizes to the amyloplast stroma in the developing endosperm, and the mutation of OsPKpa_1 in w59 decreases the plastidic PK activity, resulting in dramatic changes to the lipid biosynthesis in seeds. The w59 grains were also characterized by a marked decrease in starch content. Consistent with a decrease in number and size of the w59 amyloplasts, large empty spaces were observed in the central region of the w59 endosperm, atthe early grain-filling stage. Moreover, a phylogenetic analysis revealed four potential rice isoforms of OsPKp. We validated the in vitro PK activity of these OsPKps through reconstituting active PKp complexes derived from inactive individual OsPKps, revealing the heteromeric structure of rice PKps, which was further confirmed using a protein–protein interaction analysis. These findings suggest a functional connection between lipid and starch synthesis in rice endosperm amyloplasts.Yue Cai Wenwei Zhang Jie Jin Xiaoming Yang Xiaoman You Haigang Yan Liang Wang Jie Chen Jiahuan Xu Weiwei Chen Xingang Chen Jing Ma Xiaojie Tang Fei Kong Xiaopin Zhu Guoxiang Wang Ling Jiang William Terzaghi Chunming Wang Jianmin Wan 2018Journal of Integrative Plant Biology2018,60,11:3
10A CRISPR/Cas12a-empowered surface plasmon resonance platform for rapid and specific diagnosis of the Omicron variant of SARS-CoV-2显示文摘The outbreak of the COVID-19 pandemic was partially due to the challenge of identifying asymptomatic and presymptomatic carriers of the virus,and thus highlights a strong motivation for diagnostics with high sensitivity that can be rapidly deployed.On the other hand,several concerning SARS-CoV-2 variants,including Omicron,are required to be identified as soon as the samples are identified as‘positive’.Unfortunately,a traditional PCR test does not allow their specific identification.Herein,for the first time,we have developed MOPCS(Methodologies of Photonic CRISPR Sensing),which combines an optical sensing technology-surface plasmon resonance(SPR)with the‘gene scissors’clustered regularly interspaced short palindromic repeat(CRISPR)technique to achieve both high sensitivity and specificity when it comes to measurement of viral variants.MOPCS is a low-cost,CRISPR/Cas12a-systemempowered SPR gene-detecting platform that can analyze viral RNA,without the need for amplification,within 38 min from sample input to results output,and achieve a limit of detection of 15 fM.MOPCS achieves a highly sensitive analysis of SARS-CoV-2,and mutations appear in variants B.1.617.2(Delta),B.1.1.529(Omicron)and BA.1(a subtype of Omicron).This platform was also used to analyze some recently collected patient samples from a local outbreak in China,identified by the Centers for Disease Control and Prevention.This innovative CRISPR-empowered SPR platform will further contribute to the fast,sensitive and accurate detection of target nucleic acid sequences with single-base mutations.Zhi Chen Jingfeng Li Tianzhong Li Taojian Fan Changle Meng Chaozhou Li Jianlong Kang Luxiao Chai Yabin Hao Yuxuan Tang Omar AAl-Hartomy Swelm Wageh Abdullah GAl-Sehemi Zhiguang Luo Jiangtian Yu Yonghong Shao Defa Li Shuai Feng William J.Liu Yaqing He Xiaopeng Ma Zhongjian Xie Han Zhang 2022National Science Review2022,9,8:3
11Identification of Histoplasma causing an unexplained disease cluster in Matthews Ridge, Guyana显示文摘Here,we report the identification of Histoplasma causing an unexplained disease cluster in Matthews Ridge,Guyana.In March 2019,14 employees of Chongqing Bosai Mining Company,China,working in a manganese mining of Guyana,had unexplained fever,and two of them died.We obtained lung and brain tissues as well as the blood samples from the two deceased cases(patient No.1 and 2),and bronchoscopy lavages and cerebrospinal fluid samples from one severe case(patient No.3),respectively.All samples were tested by pathological examination,high-throughput sequencing,and real-time PCR.Pathological detection showed the presence of spore-like structures in the lung tissue of patient No.1,indicating a fungal infection in this patient.Nanopore sequencing identified the existing of H.capsulatum in the lung tissue sample within 13 h.Next-generation sequencing identified specific fragments of H.capsulatum in all of the samples tested(lung,brain and blood serum from the deceased cases,and plasma from the severe case).Real-time PCR assays did not reveal any viral infection related to transmission from bat feces.We conclude that H.capsulatum was the causative pathogen of this disease cluster based on epidemiologic,clinical,pathological and nucleic acid evidence.Ji Wang Weimin Zhou Hua Ling Xiaoping Dong Yi Zhang Jiandong Li Yong Zhang Jingdong Song William J.Liu Yang Li Ruiqing Zhang Wei Zhen Kun Cai Shuangli Zhu Dongyan Wang Jinbo Xiao Yigang Tong Wenli Liu Lihua Song Wei Wu Yang Liu Xiang Zhao Ruihuan Wang Sheng Ye Jing Wang Roujian Lu Baoying Huang Fei Ye Wenwen Lei Rongbao Gao Qi Shi Cao Chen Jun Han Wenbo Xu George F.Gao Xuejun Ma Guizhen Wu 2019Biosafety and Health2019,1,3:3
12Genome-level analysis of genetic regulation of liver gene expression networks显示文摘Gatti, D Maki, A Chesler, EJ Kirova, R Kosyk, O Lu, L Williams, RW Perkins, A Langston, MA Threadgill, DW Rusyn, I 2007中国生物学文摘2007,21,11:3
13Optimizing mechanical and magnetic properties of AlCoCrFeNi high-entropy alloy via FCC to BCC phase transformation显示文摘FCC,BCC and B2 phases,the most common phases in high-entropy alloys(HEAs),are widely investigated to tailor their mechanical and magnetic performances.The detailed investigation of FCC to BCC/B2 phase transformation of Al Co Cr Fe Ni HEA in this paper reveals its evolution and structure-properties relations in terms of both temperature and holding duration.With increasing heat treatment temperature and duration,such transition will progress simultaneously at both the dendric core(DC)region and interdendric(ID)region and the volume of phase transformation from FCC to BCC phases is greater than FCC to B2 phases,resulting in increased yield strength and saturation magnetization.The obvious phase transition of the Al Co Cr Fe Ni HEA at 1200℃can enhance its yield strength and saturation magnetization as a sacrifice of its fracture strain.However,an excellent combination of mechanical-magnetic properties was achieved when heat-treated at 1100℃for 50 h by optimizing both the transformation and the size of B2 phases.Our present study could pave ways to design the HEAs or other alloys with an optimum combination of mechanical and magnetic properties for application-oriented viewpoints.Chendong Zhao Jinshan Li Yudong Liu Xiao Ma Yujie Jin William Yi Wang Hongchao Kou Jun Wang 2021Journal of Materials Science & Technology2021,,27:3
14Prediction of unburned carbon and NO x in a tangentially fired power station using single coals and blends显示文摘R.I. Backreedy J.M. Jones L. Ma M. Pourkashanian A. Williams A. Arenillas B. Arias J.J. Pis F. Rubiera 2005Fuel2005,,17:2
15Ryanodine受体的功能结构和调节因子显示文摘Ryanodine受体(ryanodine receptor,Ry R)是位于细胞内内质网/肌浆网膜上的钙离子释放通道蛋白。Ry R是由四个足状结构的亚单位组成的同源四聚体,每个亚单位大于550 k Da,四聚体的总分子量超过2 MDa,是迄今发现的内质网/肌浆网膜上最大的离子通道。哺乳动物有三种类型的Ry R,其中Ry R1主要分布在骨骼肌中,Ry R2首先发现于心肌,Ry R3主要在脑中有较多分布。Ry R钙离子释放通道在肌肉收缩、突触传递、激素分泌、蛋白折叠和程控性凋亡以及坏死等一系列以细胞功能为基础的生理过程中起着极其重要的作用,因而近些年在医学生物学和药学应用上都有极大的进展。该文就Ry R在机体中的分布、功能结构和调节因子等进行了介绍,其蛋白调节因子二氢吡啶受体(dihydropyridine receptor,DHPR)、钙调蛋白(Calmodulin)、隐钙素(calsequestrin)、FKBP(FK506-binding protein)家族蛋白和小分子调节因子咖啡因、离子等都是Ry R复合体行使细胞生理功能必不可少的因素。范娟 杨瑾 周鑫 董治龙 王李阳 MengMeng Xu 牟玉莲 Miyuki Nishi Williams Issacs 安书成 Hiroshi Takeshima Jianjie Ma 徐学红 2015中国细胞生物学学报2015,37,1:2
16Novel antibacterial nanofibrous PLLA scaffolds显示文摘Kai Feng Hongli Sun Mark A. Bradley Ellen J. Dupler William V. Giannobile Peter X. Ma 2010Journal of Controlled Release2010,,3:2
17An immunoablative regimen of fludarabine and cyclophosphamide prevents fully MHC-mismatched murine marrow graft rejection independent of GVHD 显示文摘Petrus MJ Williams JF Eckhaus MA 2000Biol Blood Marrow Transplant2000,6,2:1
18Influenza neuraminidase inhibitors possessing a novel hydrophobic interaction in the enzyme active site: design,synthesis,and structural analysis of carbocyclic sialic acid analogues with potent anti-influenza activity显示文摘 Lew W Williams MA 1997J Am Chem Soc1997,119,:1
19Secondary prevention of coronary heart disease in the elderly (with emphasis on patients 75 years of age):an American heart association scientific statement from the council on clinical cardiology subcommittee on exercise,cardiac rehabilitation,and prevention显示文摘Williams MA Fleg JL Ades PA 2002Circulation2002,105,:1
20Maternai plasma concentrations of insulin-like growth factor-1 and insulin-like growth factor-binding protein-1 in early pregnancy and subsequent risk of preeclampsia显示文摘Ninq Y Williams MA Vadachkoria S 2004Clin Biochem2004,37,11:1
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