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11篇 您的检索式:作者名="Zhongqiang Guo"
    题名 作者 年代 出处 被引量
1Loss of 5-hydroxymethylcytosine is linked to gene body hypermethylation in kidney cancer显示文摘5-methylcytosine (5mC ) 和它的氧化形式 5-hydroxymethylcytosine (5hmC ) 被建议了涉及 tumorigenesis。因为印射方法的广泛地使用的 5mC 的读出,定序的重亚硫酸盐(BS-seq ) ,是 5mC 的和, 5hmC 层次, 5mC/5hmC 模式和这二修正的关系仍然保持糟糕理解。由介绍真实 5mC (BS-seq 由帮助 Tet 的 BS-seq 改正了, TAB-seq ) 并且 5hmC (TAB-seq ) 在单个核苷酸的分辨率同时铺平,我们这里证明与匹配的正常纸巾相比没有在肾肿瘤的 5mC 的全球损失。相反地, 5hmC 全球性被失去在几乎所有肾肿瘤纸巾。在肿瘤纸巾的 5hmC 水平是为肾癌症的一个独立预示的标记,与与更短的全面幸存联系的 5hmC 的底层。而且,我们证明 5hmC 的损失与匹配的正常纸巾相比在肿瘤被连接到 hypermethylation,特别地在基因身体区域。惊人地,基因身体 hypermethylation 显著地与肿瘤相关的基因的 silencing 被联系。IDH1 的 Downregulation 作为在肾癌症位于 5hmC 损失下面的机制被识别。恢复 5hmC 层次稀释了肿瘤房间的侵略能力并且在一个异种皮移植模型压制了肿瘤生长。一起,我们的结果证明 5hmC 的损失在由改变 DNA methylation 模式的肾癌症是一个预示的标记和一个 oncogenic 事件。Ke Chen Jing Zhang Zhongqiang Guo Qin Ma Zhengzheng Xu Yuanyuan Zhou Ziying Xu Zhongwu Li Xiongjun- Ye Xuesong Li Bifeng Yuan Yuwen Ke Chuan He Liqun Zhou Jiang Liu WeiminCi 2016Cell Research2016,26,1:10
2声波激励的超小型纳机电系统磁电天线显示文摘当前的小型天线依赖于电磁波的谐振,因此天线的尺寸与电磁波波长相关。典型的天线尺寸大于波长的1/10,而进一步缩小天线尺寸在近十年来都是一个公开的挑战。介绍一种通过悬浮铁氧/压电薄膜异质结构的声波激励纳机械磁电天线。这种磁电天线通过其在声波谐振频率处的磁电效应接收和发射电磁波。磁电天线中的体声波激发铁磁薄膜的磁化振荡,产生电磁波的辐射;反之,天线感应电磁波的磁场,得到压电电压输出。这种磁电天线(尺寸仅为波长的千分之一)比现有小型天线的尺寸小1到2个数量级,但性能却没有降低,在便携式无线通信系统中具有很大的应用潜力。Tianxiang Nan Hwaider Lin Yuan Gao Alexei Matyushov Guoliang Yu Huaihao Chen Neville Sun Shengjun Wei Zhiguang Wang Menghui Li Xinjun Wang Amine Belkessam Rongdi Guo Brian Chen James Zhou Zhenyun Qian Yu Hui Matteo Rinaldi Michael E.McConney BrANDon M.Howe Zhongqiang Hu John G.Jones Gail J.Brown Nian Xiang Sun 张建强(翻译) 陈鼎鼎(审校) 2017通信对抗2017,36,4:8
3Decompression alone versus decompression with instrumented fusion for young patients with single-level lumbar disc herniation:a short-term prospective comparative study显示文摘Sun Zhuoran Li Weishi Chen Zhongqiang Guo Zhaoqing Qi Qiang Zeng Yan Sun Chuiguo 2014Chinese Medical Journal2014,,11:3
4Neuroprotection of phenolic alkaloids from Menispermum dauricum versus melatonin against oxygen-glucose-serum-deprivation-mediated injury显示文摘BACKGROUND: Recent studies have demonstrated that phenolic alkaloids from Menispermum dauricum (PAMD) can protect the heart and brain from ischemia/reperfusion injury, and promote neuron survival by inhibiting neuronal Bax and upregulating Bcl-2 expression following ische- mia/reperfusion. OBJECTIVE: To investigate the neuroprotective effects of PAMD versus exogenous melatonin against ischemia/reperfusion injury. DESIGN, TIME AND SETTING: Observation and comparison experiments at a cellular level were performed at the Department of Biochemistry and Molecular Biology, Tongji Medical College of Huazhong University of Science and Technology between February 2007 and February 2008. MATERIALS: PAMD (95% purity) was provided by Kunming Institute of Botany, Chinese Academy of Sciences; melatonin was provided by Sigma, USA. METHODS: N2a mouse neuroblastoma cells were cultured in vitro deprived of glucose, serum and oxygen for 90 minutes, then cultured in normal medium containing different concentrations of PAMD (0.1, 1.0, 10 mg/L) or melatonin (1, 10, and 100 μmol/L). Cells cultured in normal conditions served as a control. MAIN OUTCOME MEASURES: The culture solution was collected to determine the content of ex- citatory neurotransmitters such as glutamic acid and aspartic acid; cell viability was detected by MTT methods; reactive oxygen species production was determined by fluorescence spectroscopy; mito- chondrial transmembrane potential (?Ψm) was detected by laser confocal scanning; cytochrome C was measured by western blotting; and caspase-3 activity was determined by visible spectropho- tometry. RESULTS: Melatonin and PAMD both promoted oxygen-glucose-serum deprivation-mediated N2a cell survival (P < 0.01) and inhibited glutamic acid release (P < 0.01), but melatonin did not inhibit aspartic acid production. The protective effects were the strongest using melatonin 100 μmol/L and PAMD 10 mg/L, so subsequent experiments were the performed at those doses. Although PAMD could no longer maintain mitochondrial transmembrane potential 6 hours after reperfusion, its in- hibitory effects on cytochrome C release from mitochondria and scavengers of reactive oxygen species were stronger than those of melatonin (P < 0.01). However, its inhibitory effect on caspase-3 activity was weaker than that of melatonin: PAMD could inhibit caspase-3 activity 12 hours after reperfusion (P < 0.01), but melatonin inhibited caspase-3 activity 28 hours after reperfusion (P < 0.01). CONCLUSION: The results show that melatonin and PAMD have neuroprotective effects, but that the mechanisms are varied. Melatonin can maintain mitochondrial transmembrane potential, but its inhibitory effects on cytochrome C release, caspase-3 activity, and reactive oxygen species scav-enging are different from those of PAMD.Zhongqiang Wang Jianfei Wang Yanchun Guo Tao Lu Ximing Wang Qiuhong Duan 2009Neural Regeneration Research2009,4,1:2
5Asymmetric reduction of prochiral ketones with N-sulfonylated amino alcohols as catalysts 显示文摘Zhongqiang Zhou Yajing Guo 2013Synthetic Commun2013,38,5:1
6Asymmetric reduction of prdchral keton6s with N, -sulfonylated amino alcohols as catalysts 显示文摘Zhou: Zhongqiang GuO Yajing 2013Synthetic Commun2013,38,5:1
7Comparison between two types of"Scheuermann disease-like people": thoracolumbar disc herniation patients and healthy volunteers with radiological signs of Scheuermann's disease显示文摘Guo Xinhu Chen Zhongqiang Liu Ning Guo Zhaoqing Qi Qiang Li Weishi Zeng Yan Sun Chuiguo 2014Chinese Medical Journal2014,,22:1
8Tissue transglu- taminase expression and activity in human ligamentum flavum cells de- rived from thoracic ossification of ligamentum flavum显示文摘YIN Xiaoxue CHEN Zhongqiang GUO Zhaoqing 2010Spine2010,35,20:1
9Simvastatin induces osteoblastic differentiation and inhibits adipocytic differentiation in mouse bone marrow stromal cells显示文摘Chunli Song Zhaoqing Guo Qingjun Ma Zhongqiang Chen Zhongjun Liu Hongti Jia Gengting Dang 2003Biochemical and Biophysical Research Communications2003,,3:1
10Circumspinal decompression and fusion through a posterior midline incision to treat central calcified thoracolumbar disc herniation: a minimal 2-year follow-up study with reconstruction CT显示文摘Ning Liu Zhongqiang Chen Qiang Qi Weishi Li Zhaoqing Guo 2014European Spine Journal2014,,2:1
11Permian–Triassic Climatic and Environmental Extremes and Biotic Response (IGCP 630:2014–2018):Goals and Achievements显示文摘IGCP 630,with its full title of'Permian-Triassic(P-Tr)climatic and environmental extremes and biotic response',is an International Geoscience Program project sponsored by the United Nation Educational,Scientific&Cultural Organization(UNESCO)and International Union of Geological Sciences(IUGS).This project was approved in 2014 and ended in 2018,and has applied for one-year extension in 2019.IGCP 630 consists of 150 geoscientists across multidisciplinary geosciences from 27 countries around the world.CHEN Zhongqiang GUO Zhen 2019Acta Geologica Sinica(English Edition)2019,93,3:0
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