维普中文期刊产品整合服务
119篇 您的检索式:作者名="Ni SHENG"
    题名 作者 年代 出处 被引量
1The Tea Tree Genome Provides Insights into Tea Flavor and Independent Evolution of Caffeine Biosynthesis显示文摘茶是世界有巨大的经济、药用、文化的重要性的最旧、很流行的包含咖啡因的饮料。这里,我们在场第一个高质量的核苷酸序列充满重复(80.9%) ,栽培的茶树山茶 sinensis 的 3.02-Gb 染色体。我们证明茶树的一种非常地大的染色体尺寸从一些 LTR retrotransposon 家庭的慢、稳定、长期的扩大被结果。除了一个最近的整个染色体的复制事件,基因的系特定的扩大把新陈代谢的生合成与 flavonoid 联系了被发现,它提高 catechin 生产,萜烯酶激活,和应力公差,为茶风味和改编的重要特征。我们相对可可子和咖啡表明一个独立人士和茶咖啡因合成小径的快速的进化。在 25 山茶种类之中的比较研究表明那更高的表情大多数 flavonoid- 和咖啡因铺平 -- 然而并非 theanine 相关的基因贡献 catechins 和咖啡因的增加的生产并且因此提高处理茶的适用性和茶质量。这些新奇调查结果为进一步的 metabolomic 和典型生合成小径的功能的 genomic 精炼铺平道路并且将帮助开发将最后满足并且吸引世界范围的更多的茶喝酒者的茶风味的一个更多样化的集合。En-Hua Xia Hai-Bin Zhang Jun Sheng Kui Li Qun-Jie Zhang Changhoon Kim Yun Zhang Yuan Liu Ting Zhu Wei Li Hui Huang Yan Tong Hong Nan Cong Shi Chao Shi Jian-Jun Jiang Shu-Yan Mao Jun-Ying Jiao Dan Zhang Yuan Zhao You-Jie Zhao Li-Ping Zhang Yun-Long Liu Ben-Ying Liu Yue Yu Sheng-Fu Shao De-Jiang Ni Evan E. Eichler Li-Zhi Gao 2017Molecular Plant2017,10,6:113
2Anti-SARS-CoV-2 activities in vitro of Shuanghuanglian preparations and bioactive ingredients显示文摘Human infection with severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)causes coronavirus disease 2019(COVID-19)and there is no cure currently.The 3CL protease(3CLpro)is a highly conserved protease which is indispensable for CoVs replication,and is a promising target for development of broad-spectrum antiviral drugs.In this study we investigated the anti-SARS-CoV-2 potential of Shuanghuanglian preparation,a Chinese traditional patent medicine with a long history for treating respiratory tract infection in China.We showed that either the oral liquid of Shuanghuanglian,the lyophilized powder of Shuanghuanglian for injection or their bioactive components dose-dependently inhibited SARS-CoV-23CLpro as well as the replication of SARS-CoV-2 in Vero E6 cells.Baicalin and baicalein,two ingredients of Shuanghuanglian,were characterized as the first noncovalent,nonpeptidomimetic inhibitors of SARS-CoV-23CLpro and exhibited potent antiviral activities in a cell-based system.Remarkably,the binding mode of baicalein with SARS-CoV-23CLpro determined by X-ray protein crystallography was distinctly different from those of known 3CLpro inhibitors.Baicalein was productively ensconced in the core of the substrate-binding pocket by interacting with two catalytic residues,the crucial S1/S2 subsites and the oxyanion loop,acting as a“shield”in front of the catalytic dyad to effectively prevent substrate access to the catalytic dyad within the active site.Overall,this study provides an example for exploring the in vitro potency of Chinese traditional patent medicines and effectively identifying bioactive ingredients toward a specific target,and gains evidence supporting the in vivo studies of Shuanghuanglian oral liquid as well as two natural products for COVID-19 treatment.Hai-xia Su Sheng Yao Wen-feng Zhao Min-jun Li Jia Liu Wei-juan Shang Hang Xie Chang-qiang Ke Hang-chen Hu Mei-na Gao Kun-qian Yu Hong Liu Jing-shan Shen Wei Tang Lei-ke Zhang Geng-fu Xiao Li Ni Dao-wen Wang Jian-ping Zuo Hua-liang Jiang Fang Bai Yan Wu Yang Ye Ye-chun Xu 2020Acta Pharmacologica Sinica2020,41,9:32
3Clinical evaluation of target controlled infusion system for sufentanil administration显示文摘背景 Sufentanil 目标控制注入(TCI ) 提供稳定的痛觉缺失,更好血液动力学的控制比静脉内的麻药,期望的恢复和在 perioperative 期间的麻醉的改进质量的大丸药注射时期。这研究在中国外科的 patients.Methods 在高集中为 sufentanil 评估了 TCI 系统的精确性和可行性在一般麻醉下面经历选任的外科的 12 个低风险成年人病人在这研究被包括。Sufentanil 与合并以前报导的 sufentanil 的人口 pharmacokinetic 数据的一个特定的 TCI 系统被管理,用 sufentanil 的目标效果地点集中 4 或 6 ng/ml。Sufentanil TCI 持续时间是 30 分钟。经常的动脉的血样品被液体层析团 spectrometry/mass spectrometry 为血浆 sufentanil 集中的决心在 sufentanil TCI 以后拿在期间并且直到 24 个小时。循环系统功能的变化在 precedure,恢复侧面和不利效果期间是集中与 TCI 系统预言的值相比的 recorded.Measured 血浆 sufentanil。偏爱(中部的表演错误, MDPE ) , procision (中部的绝对表演错误, MDAPE ) 并且摇摆(表演错误的可变性) sufentanil TCI,系统都是 determined.Results 病人们在麻醉的正式就职和维护期间有稳定的心血管的变量。眼睛开和 extubation 的时间是(5.6 ? 髼吗??ZHAO Yan ZHANG Li-ping WU Xin-min JIANG Jian-yu DUAN Jing-li HU Yong-fang LI Min LIU Wei SHENG Xiao-yan NI Cheng XU Mao GUO Xiang-yang 2009Chinese Medical Journal2009,,20:26
4Prognostic analysis of patients with gastrointestinal stromal tumors: a single unit experience with surgical treatment of primary disease显示文摘背景胃肠的 stromal 肿瘤(大意) ,胃肠的道的间充质的肿瘤的最普通的类型,是一个最近公认的肿瘤。大意的生物行为是高度可变的。外科的切除术为大意仍然是主要治疗。在这研究,我们回顾地与 181 个大意病人一起分析了我们的外科的经验决定治疗和病理学的特征和这些大意 patients.Methods 的预后因素的效果在 Ren 收到了在1999年1月和2007年12月之间的外科的切除术的有大意的 181 个病人的 clinicopathological 特征和后续数据 Ji 医院回顾地被考察。包括 CD117 (工具包) 的 Immunohistochemical 污点, CD34,和另外的标记被使用。肿瘤尺寸,有丝分裂的索引和另外的病理学的参数被记录。根据 NIH 风险组层化系统的一致基于最大的肿瘤尺寸和有丝分裂的索引(每 50 高力量地),肿瘤被分类进 very-low-risk 组( 15 个肿瘤,8.3%),低风险的组( 48 ,26.5%),中间风险的组( 52 ,28.7%)并且高风险的组( 66 ,36.5%)。预示的因素被考克斯分析包括年龄,性别,肿瘤尺寸,肿瘤地点,有丝分裂的索引, NIH 范畴和外科的过程分析。结果(59.1%) 107 181 个肿瘤位于胃, 51 (28.2%) 在小肠, 9 (5.0%) 在冒号和直肠,并且 14 (7.7%) 在另外的地点包括网膜和肠系膜。病人的中部的年龄是 58 (范围, 24-84 ) 年,和 102 个病人(56.4%) 是男性的。肿瘤尺寸从 0.5 ~ 30 厘米,当吝啬的尺寸是 7.02 厘米时。转移在 7 个病人被发现。(97.2%) 176 181 个病人经历了激进的切除术,并且在他们之中, 26 个病人与邻近的机关支持者一起收到了广泛的切除术到肿瘤。为在 immunostaining 的 KIT 蛋白质(CD117 ) 的积极的率是 94.5%(171/181 ) ,当那为 CD34 是 86.2% 时(156/181 ) 。1- , 3- ,和 181 个病人的 5 年的幸存率被估计分别地是 95.2% , 87.9% 和 78.5% 。在 multivisceral 切除术的年龄,肿瘤尺寸,肿瘤地点,有丝分裂的索引, NIH 范畴,和存在或缺席有重要差别(P < 0.05 ) 。但是在在这些组之间的性别没有重要差别。比例的模型揭示了的考克斯危险那个先进临床的阶段和大肿瘤尺寸贡献了更坏的预后。因为复发和转移或高复发风险,与 imatinib 被对待的病人显示出外科的切除术是的稳定的 disease.Conclusions 为主要大意的治疗的标准答案。NIH 分类简单、有效评估大意行为和预后。指向的治疗象 imatinib 那样,一个工具包酷氨酸 kinase 禁止者,可以在大意的治疗起一个重要作用。CAO Hui ZHANG Yun WANG Ming SHEN Dan-ping SHENG Zhi-yong NI Xing-zhi WU Zhi-yong LIU Qiang SHEN Yan-ying SONG Yan-yan 2010Chinese Medical Journal2010,,2:20
5Timosaponin A3 induces hepatotoxicity in rats through inducing oxidative stress and down-regulating bile acid transporters显示文摘Zhi-tao WU Xin-ming QI Jing-jing SHENG Lei-lei MA Xuan NI Jin REN Cheng-gang HUANG Guo-yu PAN 2014Acta Pharmacologica Sinica2014,35,9:13
6Carbon nanotube-based electrodes for flexible supercapacitors显示文摘Flexible supercapacitors(SCs)have attracted increasing attention as the power supply unit for portable/wearable electronics.Carbon nanotubes(CNTs)are promising candidate materials for flexible SC electrodes because of their outstanding mechanical property,high electrical conductity,large surface area,and functionability.CNTs can assemble into various macroscopic materials with different dimensions.In this review,flexible CNT assemblies including 1D fibers,2D films,and 3D aerogels and sponges are introduced with a focus on the design strategies and fabrication techniques.The recent developments and state-of-the-art applications of such structures as electrodes in flexible SCs are summarized based on device configurations including sandwiched,interdigital in-plane,and cable-type configurations.The flexible CNT-based electrodes have shown great advantages in bendability,stretchability and/or compresisbility,as well as a long cycle lifetime.The current challenges and future research opportunities in this field are also discussed.Sheng Zhu Jiangfeng Ni Yan Li 2020Nano Research2020,13,7:11
7High quality reference genome of drumstick tree(Moringa oleifera Lam.), a potential perennial crop显示文摘The drumstick tree(Moringa oleifera Lam.) is a perennial crop that has gained popularity in certain developing countries for its high-nutrition content and adaptability to arid and semi-arid environments. Here we report a high-quality draft genome sequence of M. oleifera. This assembly represents 91.78% of the estimated genome size and contains 19,465 protein-coding genes. Comparative genomic analysis between M. oleifera and related woody plant genomes helps clarify the general evolution of this species, while the identification of several species-specific gene families and positively selected genes in M. oleifera may help identify genes related to M. oleifera's high protein content, fast-growth, heat and stress tolerance. This reference genome greatly extends the basic research on M. oleifera, and may further promote applying genomics to enhanced breeding and improvement of M. oleifera.TIAN Yang ZENG Yan ZHANG Jing YANG Cheng Guang YAN Liang WANG XuanJun SHI ChongYing XIE Jing DAI TianYi PENG Lei ZENG HUAN Yu XU An Ni HUANG YeWei ZHANG JiaJin MA Xiao DONG Yang HAO ShuMei SHENG Jun 2015Science China(Life Sciences)2015,58,7:10
8Genome of Plant Maca (Lepidium meyenil) Illuminates Genomic Basis for High-Altitude Adaptation in the Central Andes显示文摘Maca (Lepidium meyenii Walp, 2n = 8x = 64 ) ,属于 Brassicaceae 家庭,经济植物在秘鲁(4000-4500 m ) 在中央安第斯山脉岭被栽培。认为快速中央安第斯山脉高举发生 5-10 百万年以前(妈) ,一个进化问题关于象 maca 那样的植物怎么在一个短地质的时期以内获得高高度的改编产生。这里,我们报导 maca 的高质量的染色体集会,在里面它二仔细 spaced maca 特定的整个染色体的复制(WGD;6.7 妈) 被识别。在 maca 和密切相关的 Brassicaceae 种类之间的比较 genomic 分析揭示了经由 WGD 涉及不能生活的压力反应,荷尔蒙发信号小径,和第二等的代谢物生合成的 maca 基因和基因家庭的扩大。保留和许多复制基因的随后的功能的分叉可以说明词法、生理的变化(即,小叶形状和自我富饶) 在在高高度的环境的 maca。另外,一些复制 maca 基因在词法改编与功能被识别(即,叶卷应答) 并且不能生活的压力反应(即, GLYCINE 富有的 RNA 有约束力的蛋白质和 DNA-DAMAGE-REPAIR/TOLERATION 2 ) 在积极选择下面。一起, maca 染色体提供有用信息在安第斯山脉在植物的高高度的改编理解 WGD 的重要角色。Jing Zhang Yang Tian Liang Yan GuanghuiZhang Xiao Wang Yan Zeng Jiajin Zhang Xiao Ma Yuntao Tan Ni Long Yangzi Wang Yujin Ma Yuqi He Yu Xue Shumei Hao Shengchao Yang Wen Wang Liangsheng Zhang Yang Dong Wei Chen Jun Sheng 2016Molecular Plant2016,9,7:9
9Rescued virus from infectious cDNA clone of rabbit hemorrhagic disease virus is adapted to RK13 cells line显示文摘Based on the infectious full-length cDNA clone of rabbit hemorrhagic disease virus (RHDV), the in vitro transcripts are introduced into RK13 cells. 12 h later, CPE could be observed clearly, and virual antigen could also be detected by IFA. The titre of the recovered virus is 104.6/mL. Immune electron micro-scopic observation of the virus particles revealed that the particles were rotund with a diameter of about 30 nm. Besides, virus titre quantification obtained by qRT-PCR showed a correlation between time from infection and virus titre. All these results showed that we have recovered RHDV from RK13 cells by re-verse genetics technology successfully, and this would be very useful in studies of the antigenicity, virulence, pathogenesis, maturation and new type vaccines of RHDV.LIU Guangqing NI Zheng YUN Tao ZHANG Yuying DU Qingyun SHENG Zutian LIANG Huali HUA Jionggang LI Shuangmao Chen Jianping 2006Chinese Science Bulletin2006,51,14:9
10Mechanism of Chaihu Shugan Powder(柴胡疏肝散) for Treating Depression Based on Network Pharmacology显示文摘Objective:To analyze the effective components of Chinese medicine(CM)contained in Chaihu Shugan Powder(柴胡疏肝散,CSP)in the treatment of depressive disorders and to predict its anti-depressant mechanism by network pharmacology.Methods:Absorption,distribution,metabolism,excretion,and toxicity calculation method was used to screen the active components of CSP.Traditional Chinese Medicine System Pharmacological Database Analysis Platform and text mining tool(GoPuMed database)were used to predict and screen the active ingredients of CSP and anti-depressive targets.Through Genetic Association Database,Therapeutic Target Database,and PharmGkb database targets for depression were obtained.Cytoscape3.2.1 software was used to establish a network map of the active ingredients-targets of CSP,and to analyze gene function and metabolic pathways through Database for Annotation,Visualization and Integrated Discovery and the Omicshare database.Results:The 121 active ingredients and 15 depression-related targets which were screened from the database can exert antidepressant effects by improving the neural plasticity,growth,transfer condition and gene expression of neuronal cell,and the raise of the expression of gap junction protein.The 15 targets passed 14 metabolic pathways,mainly involved in the regulation of neurotransmitters(5-hydroxytryptamine,dopamine and epinephrine),inflammatory mediator regulation of TRP channels,calcium signaling pathway,cyclic adenosine monophosphate signaling pathway and neuroactive ligand-receptor interaction and other signal channels to exert anti-depressant effects.Conclusion:This article reveals the possible mechanism of CSP in the treatment of depression through network pharmacology research,and lays a foundation for further target studies.LIU Yuan-yue HU Dan FAN Qi-qi ZHANG Xiao-hao ZHU Yi-cheng NI Miao-yan WANG Yan-ming ZHANG Lan-kun SHENG Lei 2020Chinese Journal of Integrative Medicine2020,26,12:6
11Effect analysis of chemoradiotherapy after operation in patients with stage ⅢA non-small cell lung cancer显示文摘Objective:To investigate the effect of chemoradiotherapy after surgery onⅢA stage nonsmall cell lung cancer(NSCLC).Methods:A total of 156 NSCLC patients undergoing total pneumonectomy or pulmonary lobectomy were included in this study.The chemotherapy group (n=75) received the protocol of cisplatin(DDP) + gemcitabine(GEM) / docetaxel(DOC) / vinorelbine (NVB);the radiotherapy + chemotherapy group(n=81) received sequential chemoradiotherapy. The response rale,local control rale in1 to 2 years,overall survival(OS),progression-free survival(PFS) and adverse reactions were evaluated.Results:The overall response rate was obviously higher in radiotherapy + chemotherapy group(79.4%) than in chemotherapy group(56.8%) (P<0.01).The 1 year local control rates for chemotherapy group and radiotherapy + chemotherapy group were(69.1±7.9)%and(77.8±8.2)%respectively and the difference reached statistical significance (P<0.001).The 2 year local control rates were(42.1±6.1%and(61.5±6.9)%respectively(P<0.001). The difference in median follow-up time between the two groups did not reach statistical meaning(P>0.05),while the median PFS of two groups were 10.8 months and 16.9 months respectively(P<0.001).1-year and 3-year survival rates were obviously higher in radiotherapy + chemotherapy group than in chemotherapy group,and the difference reached statistical significance(P<0.05 or P<0.01).The adverse reactions manifested as hematological toxicity and digestive tract reaction in the two groups.In the radiotherapy + chemotherapy group,incidences of radiation-induced esophagus injury and lung injury were 24.7%and 34.6%respectively,all occurring within 2 to 6 weeks after the start of radiation and both below grade 2.Conclusions: Chemoradiotherapy after surgery can improve local control rate and reduce or prevent distant metastasis,but there are still many controversies.In clinical work,we should carefully evaluate each patient’s age,lung function,basic physical condilion scoring and complications to choose a therapeutic schedule that is suitable for the patient.Sheng Chen Yu-Ling Cheng Shi-Ting Li Yao-Jun Ni Biao Gu 2012Asian Pacific Journal of Tropical Medicine2012,5,10:6
12A fully automatic registration approach based on contour and SIFT for HJ-1 images显示文摘To achieve a fully automatic registration between HJ-1 CCD images and HJ-1 infrared images is a difficult task as it must deal with the varying illuminations and resolutions of the images,different perspectives,and the local deformations within the images.In this paper,aimed at those registration issues,a fully automatic registration approach based on contour and SIFT is proposed.The registration technique performs a pre-registration process using contour feature matching algorithm that decides the overlapping region between a reference image and an input image.Once the coarse regions are obtained,it performs a fine registration process based on SIFT detector and a local adaptive matching strategy.In the fine registration process,image blocking theory is used,which not only speeds up the features extraction and matching,but also makes the matching point pairs distributed uniformly in images,and further improves the accuracy of input image rectification.Experiments with visible images and infrared images from HJ-1A/B demonstrate the efficiency and the accuracy of the proposed technique for multisource remote sensing images registration.NI XiLiang CAO ChunXiang DING Lin JIANG Tao ZHANG Hao JIA HuiCong LI GuangHe ZHAO Jian CHEN Wei JI Wei XU Min GAO MengXu ZHENG Sheng TIAN Rong LIU Cheng LI Sha 2012Science China Earth Sciences2012,55,10:5
13Pathologic research update of colorectal neuroendocrine tumors显示文摘Colorectal neuroendocrine tumors (NETs) originate from neuroendocrine cells in the intestinal tract, and represent a small area within oncology, but one which has provided increasing new data during the past years. Although the World Health Organization has determined clinical and histological features to predict prognosis for such tumors, they may not be valid on an individual basis. We aim to give an overview of the recent findings with regard to pathology, molecular genetics and diagnosis of NETs.Ni, Shu-Juan Sheng, Wei-Qi Du, Xiang 2010World Journal of Gastroenterology2010,16,14:5
14Dataset of the plasma membrane proteome of nasopharyngeal carcinoma cell line HNE1 for uncovering protein function显示文摘鼻咽的癌(NPC ) 是在南部的中国和东南亚洲的一个通常发生的肿瘤。当前的学习集中了于为 NPC 房间线 HNE1 的外部、不可分的蛋白质开发一个广泛的分析方法。外部膜蛋白质被 biotinylated 丰富提取, 0.1 M Na 2 公司 3, 和 H 2 O。不可分或全部的血浆膜部分用 30% Percoll 密度等级 centrifugation 被准备与或没有 0.1 M Na 2 公司 3 处理并且由西方的污点分析评估了。蛋白质受到与双人脚踏车团 spectrometry,与双人脚踏车团 spectrometry 相结合的钠 dodecyl sulfate-polyacrylamide 胶化电气泳动,和猎枪分析相结合的二维的电气泳动。我们分别地从外部、不可分、全部的血浆膜部分识别了 371, 180,和 702 蛋白质。总共, 848 非冗余的蛋白质(534 个组) 被识别。有约束力、催化、结构的分子是主要的班。除了 NPC 房间的已知的房间表面标记,分析在癌症房间是特征的疾病小径揭示了涉及多重发信号房间的小径的 311 蛋白质和 25 蛋白质。由寻找,差别表示了蛋白质数据库(http://gffzze0f623e48f094866hcp509fuffcwf65vf.ffgz.tsg.suse.edu.cn/depd/index.jsp ) , 199 蛋白质被发现是在以前的癌症 proteome 研究表示的差别。671 蛋白质蛋白质相互作用网络被获得,包括在这个工作的 178 识别蛋白质。五蛋白质的血浆膜本地化被免疫学的技术证实,验证这 proteomic 策略。我们的学习能为理解 NPC 的分子的机制提供一些帮助。Lijun Zhang Xiaofang Jia Xiaohui Liu Tingting Sheng Rui Cao Quanyuan He Zhen Liu Xia Peng JixianXiong Pengfei Zhang Ni Shi Songping Liang 2008Acta Biochimica et Biophysica Sinica2008,40,1:5
15Complications and risk factors for complications of implanted subcutaneous ports for intraperitoneal chemotherapy in gastric cancer with peritoneal metastasis显示文摘Objective:Intraperitoneal(IP)chemotherapy through subcutaneous port is an effective treatment for gastric cancer(GC)patients with peritoneal metastasis(PM).The objective of this study is to assess the port complications and risk factors for complications in GC patients with PM.Methods:In retrospective screening of 301 patients with subcutaneous ports implantation,249 GC patients with PM who received IP chemotherapy were screened out for analysis.Port complications and risk factors for complications were analyzed.Results:Of the 249 analyzed patients,57(22.9%)experienced port complications.Subcutaneous liquid accumulation(42.1%)and infection(28.1%)were the main complications,and other complications included port rotation(14.1%),wound dehiscence(12.3%),inflow obstruction(1.7%)and subcutaneous metastasis(1.7%).The median interval between port implantation and occurrence of complications was 3.0 months.Eastern Cooperative Oncology Group(ECOG)performance status[odds ratio(OR),1.74;95%confidence interval(95%CI),1.12-2.69],albumin(OR,3.67;95%CI,1.96-6.86),implantation procedure optimization(OR,0.33;95%CI,0.18-0.61)and implantation groups(OR,0.37;95%CI,0.20-0.69)were independent risk factors for port complications(P<0.05).ECOG performance status was the only factor that related to the grades of port complications(P=0.016).Conclusions:Port complications in GC patients who received IP chemotherapy are manageable.ECOG performance status,albumin,implantation procedure and implantation group are independent risk factors for port complications in GC patients with PM.Zhongyin Yang Chen Li Wentao Liu Yanan Zheng Zhenglun Zhu Ziehen Hua Zhentian Ni Sheng Lu Min Yan Chao Yan Zhenggang Zhu 2020Chinese Journal of Cancer Research2020,32,4:5
16Low-Complexity Joint Channel Estimation and Symbol Detection for OFDMA Systems显示文摘In this paper,we propose a joint channel estimation and symbol detection(JCESD)algorithm relying on message-passing algorithms(MPA)for orthogonal frequency division multiple access(OFDMA)systems.The channel estimation and symbol detection leverage the framework of expectation propagation(EP)and belief propagation(BP)with the aid of Gaussian approximation,respectively.Furthermore,to reduce the computation complexity involved in channel estimation,the matrix inversion is transformed into a series of diagonal matrix inversions through the Sherman-Morrison formula.Simulation experiments show that the proposed algorithm can reduce the pilot overhead by about 50%,compared with the traditional linear minimum mean square error(LMMSE)algorithm,and can approach to the bit error rate(BER)performance bound of perfectly known channel state information within 0.1 dB.Rui Xin Zuyao Ni Sheng Wu Linling Kuang Chunxiao Jiang 2019China Communications2019,16,7:4
17Debulking treatment with CT-guided percutaneous radiofrequency ablation and hepatic artery infusion of floxuridine improves survival of patients with unresectable pulmonary and hepatic metastases of colorectal cancer显示文摘The survival of most patients with both unresectable hepatic and pulmonary metastases of colorectal cancer is poor. In this retrospective study, we investigated the efficacy of computed tomography(CT)-guided radiofrequency ablation(RFA) and systemic chemotherapy plus hepatic artery infusion of floxuridine(HAIFUDR). Sixty-one patients were selected from 1,136 patients with pulmonary and hepatic metastases from colorectal cancer. Patients were treated with RFA and systemic chemotherapy plus HAI-FUDR(ablation group, n = 39) or systemic chemotherapy plus HAI-FUDR(FUDR group, n = 22). Patients in the two groups were matched by sex, age, number of metastases, and calendar year of RFA or FUDR. Survival data were evaluated by using univariate and multivariate analyses. Clinical characteristics were comparable between the two groups. All patients in the ablation group underwent RFA and chemotherapy. Median follow-up was 56.8 months. The 1-, 3-, and 5-year overall survival(OS) rates were 97%, 64%, and 37%, respectively, for the ablation group, and 82%, 32%, and 19%, respectively, for the FUDR group. The 1-, 3-, and 5-year survival rates after metastasis were 97%, 49%, and 26% for the ablation group, and 72%, 24%, and 24% for the FUDR group, respectively. The median OS times were 45 and 25 months for the ablation and FUDR groups, respectively. In the multivariate analysis, treatment allocation was a favorable independent prognostic factor for OS(P = 0.001) and survival after metastasis(P = 0.009). These data suggest that the addition of RFA to systemic chemotherapy plus HAI-FUDR improves the survival of patients with both unresectable hepatic and pulmonary metastases from colorectal cancer.Sheng Li Ni He Wang Li Pei-Hong Wu 2014Chinese Journal of Cancer2014,33,6:4
18Sulfolobus tokodaii RadA paralog,stRadC2,is involved in DNA recombination via interaction with RadA and Hjc显示文摘Rad51/RadA paralogs found in eukaryotes and euryarchaea play important roles during recombination and repair,and mutations in one of the human Rad51 paralogs,Rad51C,are associated with breast and ovarian cancers.The hyperthermophilic crenarchaeon Sulfolobus tokodaii encodes four putative RadA paralogs and studies on these proteins may assist in understanding the functions of human Rad51 paralogs.Here,we report the biochemical characterization of stRadC2,a S.tokodaii RadA paralog.Pull-down assays revealed that the protein was able to interact with the recombinase,RadA,and the Holliday junction endonuclease,Hjc.stRadC2 inhibited the strand exchange activity of RadA and facilitated Hjc-mediated Holliday junction DNA cleavage in vitro.RT-PCR analysis revealed that stRadC2 transcription was immediately reduced after UV irradiation,but was restored to normal levels at the late stages of DNA repair.Our results suggest that stRadC2 may act as an anti-recombination factor in DNA recombinational repair in S.tokodaii.WANG Lei SHENG DuoHong HAN WenYuan HUANG Bin ZHU ShanShan NI JinFeng LI Jia SHEN YuLong 2012Science China(Life Sciences)2012,55,3:3
19Targeting a novel inducible GPX4 alternative isoform to alleviate ferroptosis and treat metabolic-associated fatty liver disease显示文摘Metabolic-associated fatty liver disease(MAFLD),which is previously known as non-alcoholic fatty liver disease(NAFLD),represents a major health concern worldwide with limited therapy.Here,we provide evidence that ferroptosis,a novel form of regulated cell death characterized by iron-driven lipid peroxidation,was comprehensively activated in liver tissues from MAFLD patients.The canonical-GPX4(cGPX4),which is the most important negative controller of ferroptosis,is downregulated at protein but not mRNA level.Interestingly,a non-canonical GPX4 transcript-variant is induced(inducible-GPX4,iGPX4)in MAFLD condition.The high fat-fructose/sucrose diet(HFFD)and methionine/choline-deficient diet(MCD)-induced MAFLD pathologies,including hepatocellular ballooning,steatohepatitis andfibrosis,were attenuated and aggravated,respectively,in cGPX4-and iGPX4-knockin mice.cGPX4 and iGPX4 isoforms also displayed opposing effects on oxidative stress and ferroptosis in hepatocytes.Knockdown of iGPX4 by siRNA alleviated lipid stress,ferroptosis and cell injury.Mechanistically,the triggered iGPX4 interacts with cGPX4 to facilitate the transformation of cGPX4 from enzymatic-active monomer to enzymatic-inactive oligomers upon lipid stress,and thus promotes ferroptosis.Co-immunoprecipitation and nano LC–MS/MS analyses confirmed the interaction between iGPX4 and cGPX4.Our results reveal a detrimental role of non-canonical GPX4 isoform in ferroptosis,and indicate selectively targeting iGPX4 may be a promising therapeutic strategy for MAFLD.Jie Tong Dongjie Li Hongbo Meng Diyang Sun Xiuting Lan Min Ni Jiawei Ma Feiyan Zeng Sijia Sun Jiangtao Fu Guoqiang Li Qingxin Ji Guoyan Zhang Qirui Shen Yuanyuan Wang Jiahui Zhu Yi Zhao Xujie Wang Yi Liu Shenxi Ouyang Chunquan Sheng Fuming Shen Pei Wang 2022Acta Pharmaceutica Sinica B2022,12,9:3
20Observation of a bi-critical point between antiferromagnetic and superconducting phases in pressurized single crystal Ca0.73La0.27FeAs2显示文摘One of the most strikingly universal features of the high-temperature superconductors is that the superconducting phase emerges in the close proximity of the antiferromagnetic phase, and the interplay between these two phases poses a long-standing challenge. It is commonly believed that, as the antiferromagnetic transition temperature is continuously suppressed to zero, there appears a quantum critical point, around which the existence of antiferromagnetic fluctuation is responsible for the development of the superconductivity. In contrast to this scenario, we report the observation of a bi-critical point identified at 2.88 GPa and 26.02 K in the pressurized high-quality single crystal Ca_(0.73)La_(0.27)FeAs_2 by complementary in-situ high pressure measurements. At the critical pressure, we find that the antiferromagnetism suddenly disappears and superconductivity simultaneously emerges at almost the same temperature, and that the external magnetic field suppresses the superconducting transition temperature but hardly affects the antiferromagnetic transition temperature.Yazhou Zhou ShanJiang Qi wu Vladimir A.Sidorov Jing Guo Wei Yi Shan Zhang Zhe Wang HonghongWang shu Cai Ke Yang Sheng Jiang Aiguo Li Ni Ni Guangming Zhang Liling Sun Zhongxian Zhao 2017Science Bulletin2017,62,12:3
返回顶部 每页显示:
共6页 首页 上一页 第1页 下一页 末页 /6 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费