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1431篇 您的检索式:作者名="Ley G"
    题名 作者 年代 出处 被引量
1An epigenomic approach to therapy for tamoxifen-resistant breast cancer显示文摘Tamoxifen 是为雌激素受体 alpha 的前线治疗(ERα) 在绝经前的女人的积极的胸肿瘤。然而,到 tamoxifen 的抵抗发生在许多病人。嗯仍然与获得的 tamoxifen 抵抗在乳癌房间的生长起一个关键作用,建议那 ERα为治疗仍然是一个有效目标 tamoxifen 抵抗(Tam-R ) 乳癌。以识别 ERα 的新奇管理者;发信号,通过对 histone 甲基修饰词的一幅小规模的 siRNA 屏幕,我们发现了 WHSC1, histone H3K36 methyltransferase, ERα 的一个积极管理者;在乳癌房间发信号。我们证明 WHSC1 被招募到 ERα由 BET 蛋白质 BRD3/4 的基因,并且便于 ERα基因表示。小分子的赌注蛋白质禁止者 JQ1 potently 压制了经典 ERα发信号的小径和在文化的 Tam-R 乳癌房间的生长。用一个 Tam-R 乳癌异种皮移植老鼠模型,我们与 JQ1 和 ER degrader fulvestrant 由 JQ1 和联合治疗的强壮的长持续的效果在 vivo 反胸癌症活动示威了。一起拿,我们提供 epigenomic 蛋白质 BRD3/4 和 WHSC1 是雌激素受体发信号的必要管理者并且是为 Tam-R 乳癌的治疗的新奇治疗学的目标的证据。Qin Feng Zheng Zhang Martin J Shea Chad J Creighton Cristian Coarfa Susan G Hilsenbeck Rainer Lanz Bin He Lei Wang Xiaoyong Fu Agostina Nardone Yongcheng Song James Bradner Nicholas Mitsiades Constantine S Mitsiades C Kent Osborne Rachel Schiff Bert W O'Malley 2014Cell Research2014,24,7:10
2Acute interstitial edematous pancreatitis:Findings on non-enhanced MR imaging显示文摘AIM: To study the appearances of acute interstitial edematous pancreatitis (IEP) on non-enhanced MR imaging. METHODS: A total of 53 patients with IEP diagnosed by clinical features and laboratory findings were underwent MR imaging. MR imaging sequences included fast spoiled gradient echo (FSPGR) fat saturation axial T1-weighted imaging, gradient echo T1-weighted (in phase), single shot fast spin echo (SSFSE) T2-weighted, respiratory triggered (R-T) T2-weighted with fat saturation, and MR cholangiopancreatography. Using the MR severity score index, pancreatitis was graded as mild (0-2 points), moderate (3-6 points) and severe (7-10 points). RESULTS: Among the 53 patients, IEP was graded as mild in 37 patients and as moderate in 16 patients. Forty-seven of 53 (89%) patients had at least one abnormality on MR images. Pancreas was hypointense relative to liver on FSPGR T1-weighted images in 18.9% of patients, and hyperintense in 25% and 30% on SSFSE T2-weighted and R-T T2-weighted images, respectively. The prevalences of the findings of IEP on R-T T2- weighted images were, respectively, 85% for pancreatic fascial plane, 77% for left renal fascial plane, 55% for peripancreatic fat stranding, 42% for right renal fascial plane, 45% for perivascular fluid, 40% for thickened pancreatic lobular septum and 25% for peripancreatic fluid, which were markedly higher than those on in-phase or SSFSE T2-weighted images (P < 0.001).CONCLUSION: IEP primarily manifests on non-enhanced MR images as thickened pancreatic fascial plane, left renal fascial plane, peripancreatic fat stranding, and peripancreatic fluid. R-T T2-weighted imaging is more sensitive than in-phase and SSFSE T2-weighted imaging for depicting IEP.Xiao-Ming Zhang Zhi-Song Feng Qiong-Hui Zhao Chun-Ming Xiao Donald G Mitchell Jian Shu Nan-Lin Zeng Xiao-Xue Xu Jun-Yang Lei Xiao-Bing Tian 2006World Journal of Gastroenterology2006,12,36:9
3Screening Helicobacter pylori genes induced during infection of mouse stomachs显示文摘AIM:To investigate the effect of in vivo environment on gene expression in Helicobacter pylori(H.pylori) as it relates to its survival in the host.METHODS:In vivo expression technology(IVET) systems are used to identify microbial virulence genes.We modified the IVET-transcriptional fusion vector,pIVET8,which uses antibiotic resistance as the basis for selection of candidate genes in host tissues to develop two unique IVET-promoter-screening vectors,pIVET11 and pIVET12.Our novel IVET systems were developed by the fusion of random Sau3A DNA fragments of H.pylori and a tandem-reporter system of chloramphenicol acetyltransferase and beta-galactosidase.Additionally,each vector contains a kanamycin resistance gene.We used a mouse macrophage cell line,RAW 264.7 and mice,as selective media to identify specific genes that H.pylori expresses in vivo.Gene expression studies were conducted by infecting RAW 264.7 cells with H.pylori.This was followed by real time polymerase chain reaction(PCR) analysis to determine the relative expression levels of in vivo induced genes.RESULTS:In this study,we have identified 31 in vivo induced(ivi) genes in the initial screens.These 31 genes belong to several functional gene families,including several well-known virulence factors that are expressed by the bacterium in infected mouse stomachs.Virulence factors,vacA and cagA,were found in this screen and are known to play important roles in H.pylori infection,colonization and pathogenesis.Their detection validates the efficacy of these screening systems.Some of the identified ivi genes have already been implicated to play an important role in the pathogenesis of H.pylori and other bacterial pathogens such as Escherichia coli and Vibrio cholerae.Transcription profiles of allivi genes were confirmed by real time PCR analysis of H.pylori RNA isolated from H.pylori infected RAW 264.7 macrophages.We compared the expression profile of H.pylori and RAW 264.7 coculture with that of H.pylori only.Some genes such as cag A,vac A,lpx C,mur I,tlp C,trx B,sod B,tnp B,pgi,rbf A and inf B showed a 2-20 fold upregulation.Statistically significant upregulation was obtained for all the above mentioned genes(P < 0.05).tlp C,cag A,vac A,sod B,rbf A,inf B,tnp B,lpx C and mur I were also significantly upregulated(P < 0.01).These data suggest a strong correlation between results obtained in vitro in the macrophage cell line and in the intact animal.CONCLUSION:The positive identification of these genes demonstrates that our IVET systems are powerful tools for studying H.pylori gene expression in the host environment.Aparna Singh Nathaniel Hodgson Ming Yan Jungsoo Joo Lei Gu Hong Sang Emmalena Gregory-Bryson William G Wood Yisheng Ni Kimberly Smith Sharon H Jackson William G Coleman 2012World Journal of Gastroenterology2012,18,32:5
4Engineering osteoarthritic cartilage model through differentiating senescent human mesenchymal stem cells for testing disease-modifying drugs显示文摘Significant cellular senescence has been observed in cartilage harvested from patients with osteoarthritis(OA).In this study,we aim to develop a senescence-relevant OA-like cartilage model for developing disease-modifying OA drugs(DMOADs).Spe-cifically,human bone marrow-derived mesenchymal stromal cells(MSCs)were expanded in vitro up to passage 10(P10-MSCs).Following their senescent phenotype formation,P10-MSCs were subjected to pellet culture in chondrogenic medium.Results from qRT-PCR,histology,and immunostaining indicated that cartilage generated from P10-MSCs displayed both senescent and OA-like phenotypes without using other OA-inducing agents,when compared to that from normal passage 4(P4)-MSCs.Interestingly,the same gene expression differences observed between P4-MSCs and P10-MSC-derived cartilage tissues were also observed between the preserved and damaged OA cartilage regions taken from human samples,as demonstrated by RNA sequencing data and other analysis methods.Lastly,the utility of this senescence-initiated OA-like cartilage model in drug development was assessed by testing several potential DMOADs and senolytics.The results suggest that pre-existing cellular senescence can induce the generation of OA-like changes in cartilage.The P4-and P10-MSCs derived cartilage models also represent a novel platform for predicting the efficacy and toxicity of potential DMOADs on both preserved and damaged cartilage in humans.Ning Wang Yuchen He Silvia Liu Meagan J.Makarcyzk Guanghua Lei Alexander Chang Peter G Alexander Tingjun Hao Anne-Marie Padget Nuria de Pedro Tsapekos Menelaos Hang Lin 2022Science China(Life Sciences)2022,65,2:5
5鱼、蛋、牛奶、坚果、蔬菜和水果摄入量大,以及低盐膳食模式与高血压的患病率和控制率相关显示文摘食物对高血压患病率和控制率的影响尚不清晰。本文旨在中国人群中调查鱼、蛋、牛奶、坚果、蔬菜和水果摄入量大以及低盐膳食模式是否与高血压有关。方法:从2012年9月到2014年12月共招募15303名受试者进行病例对照研究,分为高血压组(n=1604)和正常血压组(n=13660),其中高血压组又分为血压控制亚组(n=397)和血压未控制亚组(n=1207)。收集过去1 年里每周平均鱼、蛋、牛奶、坚果、蔬菜、水果和盐摄入量数据。鱼、蛋、牛奶、坚果、蔬菜、水果和盐的平均摄入量分别为117、150、35、20、2100、300和58g/周。Yu G Fu H Huang W Zhang N Deng D Li G Lei H 2019中华高血压杂志2019,27,5:2
6Rapid phenotypic evolution with shallow genomic differentiation during early stages of high elevation adaptation in Eurasian Tree Sparrows显示文摘Known as the‘third polar region’,the Qinghai-Tibet Plateau represents one of the harshest highland environments in the world and yet a number of organisms thrive there.Previous studies of birds,animals and humans have focused on well-differentiated populations in later stages of phenotypic divergence.The adaptive processes during the initial phase of highland adaptation remain poorly understood.We studied a human commensal,the Eurasian Tree Sparrow,which has followed human agriculture to the Qinghai-Tibet Plateau.Despite strong phenotypic differentiation at multiple levels,in particular in muscle-related phenotypes,highland and lowland populations show shallow genomic divergence and the colonization event occurred within the past few thousand years.In a one-month acclimation experiment investigating phenotypic plasticity,we exposed adult lowland tree sparrows to a hypoxic environment and did not observe muscle changes.Through population genetic analyses,we identified a signature of polygenic adaptation,whereby shifts in allele frequencies are spread across multiple loci,many of which are associated with muscle-related processes.Our results reveal a case of positive selection in which polygenic adaptation appears to drive rapid phenotypic evolution,shedding light on early stages of adaptive evolution to a novel environment.Yanhua Qu Chunhai Chen Ying Xiong Huishang She Yong E Zhang Yalin Cheng Shane DuBay Dongming Li Per G P Ericson Yan Hao Hongyuan Wang Hongfeng Zhao Gang Song Hailin Zhang Ting Yang Chi Zhang Liping Liang Tianyu Wu Jinyang Zhao Qiang Gao Weiwei Zhai Fumin Lei 2020National Science Review2020,7,1:2
7Severe Hand, Foot, and Mouth Disease Associated with Coxsackievirus A6 - Alabama, Connecticut, California, and Nevada, November 201 1 - February 2012显示文摘McIntyre Mary G Stevens Kelly M Davidson Sherri Pippin Tina Magill Dagny Kulhanjian Julie A Kelly Daniel Greenhow Tara L Salas Maria L Yagi Shigeo Padilla Tasha Berumen Ricardo Glaser Carol Landry Marie Louise Lott Jason Chen Lei Paulson 2012EN2012,,12:2
8P450 BM3:the very model of a modern flavocytochrome 显示文摘MUNRO A W LEYS D G MCLEAN K J 2002Trends Biochem Sci2002,27,5:1
9Application of an intelligent classification method to mechanical fault diagnosis显示文摘LEI Y G HE Z J ZI Y Y 2009Expert Systems with Applications2009,36,6:1
10Supplemental microbial phytase improves bioavailability of dietary zinc to weanling pigs显示文摘 kupk Miller E R ullrey D I Yokoyama M T 1993Nutrition1993,,123:1
11Synthesis-Structure-Performance Relationship of Cocondensed Phenol-Urea-Formaldehyde Resins by MALD1-ToF andl3CNMR显示文摘Du G B Lei H Pizzi A 2008JAppIPolymSci2008,110,2:1
12N-acetylcysteine suppresses retinal detachment in an experimen-tal model of proliferative vitreoretinopathy显示文摘Lei H Velez G Cui J 2010Am J Pathol2010,177,1:1
13A major role for carbon monoxide as an endogenous hyperpolarizing factor in the gastrointestinal tract显示文摘Farrugia G Lei S Lin X 2003Proc Natl Acad Sci USA2003,100,14:1
14QSAR study on N-containing corrosion inhibitors:Quantum chemical approach assisted by topological index显示文摘S G Zhang W Lei M Z Xia 2005Journal of Molecular Structure:THEOCHEM2005,732,:1
15Managing major chemical accidents in China: Towards effective risk information显示文摘HE G LEI Z LU Y 2011Journal of Hazardous Materials2011,187,13:1
16Uraemia suppresses central dopaminergic metabolism and impairs motor activity in rats显示文摘Adachi N Lei B Deshpande G 2001Intensive Care Med2001,27,10:1
17Performance of long rectangular barrettes in granitic saprolites 显示文摘Ng C W W Lei G H 2003Journal of Geotechnical and Geoenvironmental Engineering America Society of Civil Engineers2003,129,8:1
18Overexpression of tumor suppressor TSLC1 by a survivin- regulated oncolytie ade- novirus significantly inhibits hepatoceUular carcinoma growth 显示文摘He G Lei W Wang S 2012J Cancer Res Clin Oncol2012,138,4:1
19Non-invasive quantitative assessment of oxidative metabolism in quadriceps muscles by near infrared spec- troscopy 显示文摘Ding H Wang G Lei W 2001Br J Sports Med2001,35,6:1
20Wear and corrosion resistance of A1 ion implanted AZ31 magnesium alloy 显示文摘LEI M K LI P YANG H G 2007Surface & Coat ings Technology2007,201,:1
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