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32篇 您的检索式:作者名="Jimin Xu"
    题名 作者 年代 出处 被引量
1Cardiovascular magnetic resonance imaging findings in children with myocarditis显示文摘Liu Guiying Yang Xi Su Ying Xu Jimin Wen Zhaoying 2014Chinese Medical Journal2014,,21:9
2The internalization pathway,metabolic fate and biological effect of superparamagnetic iron oxide nanoparticles in the macrophage-like RAW264.7 cell显示文摘The potential applications of superparamagnetic iron oxide nanoparticles (SPIONs) in several nanomedical fields have attracted intense interest based on the cell-nano interaction. However, the mechanisms underlying cell uptake, the intracellular trail, final fate and the biological effects of SPIONs have not yet been clearly elucidated. Here, we showed that multiple endocytic pathways were involved in the internalization process of SPIONs in the RAW264.7 macrophage. The internalized SPIONs were biocompatible and used three different metabolic pathways: The SPIONs were distributed to daughter cells during mitosis; they were degraded in the lysosome and free iron was released into the intracellular iron metabolic pool; and, the intact SPIONs were potentially exocytosed out of the cells. The internalized SPIONs did not induce cell damage but affected iron metabolism, inducing the upregulation of ferritin light chain at both the mRNA and protein levels and ferroportin 1 at the mRNA level. These results may contribute to the development of nanobiology and to the safe use of SPIONs in medicine when administered as a contrast medium or a drug delivery tool.GU JingLi XU HaiFei HAN YeHua DAI Wei HAO Wei WANG Chun Yu GU Ning XU HaiYan CAO JiMin 2011Science China(Life Sciences)2011,54,9:8
3Zacopride selectively activates the Kir2.1 channel via a PKA signaling pathway in rat cardiomyocytes显示文摘We recently reported that zacopride is a selective inward rectifier potassium current (IK1 ) channel agonist, suppressing ventricular arrhythmias without affecting atrial arrhythmias. The present study aimed to investigate the unique pharmacological properties of zacopride. The whole-cell patch-clamp technique was used to study IK1 currents in rat atrial myocytes and Kir2.x currents in human embryonic kidney (HEK)-293 cells transfected with inward rectifier potassium channel (Kir)2.1, Kir2.2, Kir2.3, or mutated Kir2.1 (at phosphorylation site S425L). Western immunoblots were performed to estimate the relative protein expression levels of Kir2.x in rat atria and ventricles. Results showed that zacopride did not affect the IK1 and transmembrane potential of atrial myocytes. In HEK293 cells, zacopride increased Kir2.1 homomeric channels by 40.7%±9.7% at 50 mV, but did not affect Kir2.2 and Kir2.3 homomeric channels, and Kir2.1-Kir2.2, Kir2.1-Kir2.3 and Kir2.2-Kir2.3 heteromeric channels. Western immunoblots showed that similar levels of Kir2.3 protein were expressed in rat atria and ventricles, but atrial Kir2.1 protein level was only 25% of that measured in the ventricle. In addition, 5-hydroxytryptamine (5-HT) 3 receptor was undetectable, whereas 5-HT 4 receptor was weakly expressed in HEK293 cells. The Kir2.1-activating effect of zacopride in these cells was abolished by inhibition of protein kinase A (PKA), but not PKC or PKG. Furthermore, zacopride did not activate the mutant Kir2.1 channel in HEK293 cells but selectively activated the Kir2.1 homomeric channel via a PKA-dependent pathway, independent to that of the 5-HT receptor.ZHANG Li LIU QingHua LIU ChengFang ZHAI XuWen FENG QiLong XU RuiLing CUI XiangLi ZHAO ZhiQing CAO JiMin WU BoWei 2013Science China(Life Sciences)2013,56,9:7
4An Overview of Bearing Candidates for the Next Generation of Reusable Liquid Rocket Turbopumps显示文摘There is a consensus in the aerospace field that the development of reusable liquid rockets can effectively reduce the launch expense.The pursuit of a long service life and reutilization highly depends on the bearing components.However,the rolling element bearings(REBs)used in the existing rocket turbopumps present obvious and increasing limitations due to their mechanical contacting mode.For REBs,high rotational speed and long service life are two performance indexes that mutually restrict each other.To go beyond the DN value(the product of the bearing bore and rotational speed)limit of REBs,the major space powers have conducted substantial explorations on the use of new types of bearings to replace the REB.This review discusses,first,the crucial role of bearings in rocket turbopumps and the related structural improvements of REBs.Then,with the prospect of application to the next generation of reusable liquid rocket turbopumps,the bearing candidates investigated by major space powers are summarized comprehensively.These promising alternatives to REBs include fluid-film,foil,and magnetic bearings,together with the novel superconducting compound bearings recently proposed by our team.Our more than ten years of relevant research on fluid-film and magnetic bearings are also introduced.This review is meaningful for the development of long-life and highly reliable bearings to be used in future reusable rocket turbopumps.Jimin Xu Changhuan Li Xusheng Miao Cuiping Zhang Xiaoyang Yuan 2020Chinese Journal of Mechanical Engineering2020,33,2:4
5Galectin-3-centered paracrine network mediates cardiac inflammation and fibrosis upon β-adrenergic insult显示文摘Rapid over-activation of β-adrenergic receptors (β-AR) following acute stress initiates cardiac inflammation and injury by activating interleukin-18 (IL-18),however,the process of inflammation cascades has not been fully illustrated.The present study aimed to determine the mechanisms of cardiac inflammatory amplification following acute sympathetic activation.With bioinformatics analysis,galectin-3 was identified as a potential key downstream effector of β-AR and IL-18 activation.The serum level of galectin-3 was positively correlated with norepinephrine or IL-18 in patients with chest pain.In the heart of mice treated with β-AR agonist isoproterenol (ISO,5 mg kg^(-1)),galectin-3 expression was upregulated markedly later than IL-18 activation,and Nlrp3^(-/-)and Il18^(-/-)mice did not show ISO-induced galectin-3 upregulation.It was further revealed that cardiomyocyte-derived IL-18 induced galectin-3 expression in macrophages following ISO treatment.Moreover,galectin-3deficiency suppressed ISO-induced cardiac inflammation and fibrosis without blocking ISO-induced IL-18 increase.Treatment with a galectin-3 inhibitor,but not a β-blocker,one day after ISO treatment effectively attenuated cardiac inflammation and injury.In conclusion,galectin-3 is upregulated to exaggerate cardiac inflammation and injury following acute β-AR activation,a galectin-3 inhibitor effectively blocks cardiac injury one day after β-AR insult.Guomin Hu Jimin Wu Huijun Gu Xiangning Deng Wenli Xu Shan Feng Shuaixing Wang Yao Song Zhengda Pang Xiuling Deng Aleksandr E.Vendrov Nageswara R.Madamanchi Marschall S.Runge Xinyu Wang Youyi Zhang Han Xiao Erdan Dong 2023Science China(Life Sciences)2023,66,5:3
6First results on ^(76)Ge neutrinoless double beta decay from CDEX-1 experiment显示文摘We report the first results on ^(76)Ge neutrinoless double beta decay from stage one of the China dark-matter experiment(CDEX).A p-type point-contact high-purity germanium detector with a mass of 994 g has been installed to detect neutrinoless double beta decay events, as well as to directly detect dark matter particles. An exposure of 304 kg d has been analyzed over a wide spectral band from 500 keV to 3 MeV. The average event rate obtained was about 0.012 counts per keV per kg per day over the 2.039 MeV energy range. The half-life of ^(76)Ge neutrinoless double beta decay derived based on this result is T^(0ν)1/2>6.4×10^(22) yr(90% C.L.). An upper limit on the effective Majorana-neutrino mass of 5.0 eV has been achieved.Li Wang Qian Yue KeJun Kang JianPing Cheng YuanJing Li TszKing Henry Wong ShinTed Lin JianPing Chang JingHan Chen QingHao Chen YunHua Chen Zhi Deng Qiang Du Hui Gong Li He QingJu He JinWei Hu HanXiong Huang TengRui Huang LiPing Jia Hao Jiang HauBin Li Hong Li JianMin Li Jin Li Jun Li Xia Li XueQian Li YuLan Li FongKay Lin ShuKui Liu Hao Ma JingLu Ma XingYu Pan Jie Ren XiChao Ruan ManBin Shen Vivek Sharma Lakhwinder Singh Manoj Kumar Singh Manoj Kumar Singh Arun Kumar Soma ChangJian Tang WeiYou Tang ChaoHsiung Tseng JiMin Wang Qing Wang ShiYong Wu YuCheng Wu HaoYang Xing Yin Xu Tao Xue LiTao Yang SongWei Yang Nan Yi ChunXu Yu HaiJun Yu WeiHe Zeng XiongHui Zeng Zhi Zeng Lan Zhang YunHua Zhang MingGang Zhao Wei Zhao JiFang Zhou ZuYing Zhou JingJun Zhu WeiBin Zhu ZhongHua Zhu 2017Science China(Physics,Mechanics & Astronomy)2017,60,7:3
7Pathological matrix stiffness promotes cardiac fibroblast differentiation through the POU2F1 signaling pathway显示文摘Cardiac fibroblast(CF)differentiation into myofibroblasts is a crucial cause of cardiac fibrosis,which increases in the extracellular matrix(ECM)stiffness.The increased stiffness further promotes CF differentiation and fibrosis.However,the molecular mechanism is still unclear.We used bioinformatics analysis to find new candidates that regulate the genes involved in stiffnessinduced CF differentiation,and found that there were binding sites for the POU-domain transcription factor,POU2F1(also known as Oct-1),in the promoters of 50 differentially expressed genes(DEGs)in CFs on the stiffer substrate.Immunofluorescent staining and Western blotting revealed that pathological stiffness upregulated POU2F1 expression and increased CF differentiation on polyacrylamide hydrogel substrates and in mouse myocardial infarction tissue.A chromatin immunoprecipitation assay showed that POU2F1 bound to the promoters of fibrosis repressors IL1R2,CD69,and TGIF2.The expression of these fibrosis repressors was inhibited on pathological substrate stiffness.Knockdown of POU2F1 upregulated these repressors and attenuated CF differentiation on pathological substrate stiffness(35 kPa).Whereas,overexpression of POU2F1 downregulated these repressors and enhanced CF differentiation.In conclusion,pathological stiffness upregulates the transcription factor POU2F1 to promote CF differentiation by inhibiting fibrosis repressors.Our work elucidated the crosstalk between CF differentiation and the ECM and provided a potential target for cardiac fibrosis treatment.Mingzhe Li Jimin Wu Guomin Hu Yao Song Jing Shen Junzhou Xin Zijian Li Wei Liu Erdan Dong Ming Xu Youyi Zhang Han Xiao 2021Science China(Life Sciences)2021,64,2:3
8Oridonin and its derivatives for cancer treatment and vercoming therapeutic resistance显示文摘Cancer is one of the diseases with high morbidity and mortality on a global scale.Chemotherapy remains the primary treatment option for most cancer patients,including patients with progressive,metastatic,and recurrent diseases.To date,hundreds of chemotherapy drugs are used to treat various cancers,however,the anti-cancer eficacy and outcomes are largely hampered by chemotherapy-associated toxicity and acquired therapeutic resistance.The natural product(NP)oridonin has been extensively studied for its anti-cancer efficacy.More recently,oridonin has been shown to overcome drug resistance through multiple mechanisms,with yet-to-be-defined bona fide targets.Hundreds of oridonin derivative analogs(oridonalogs)have been synthesized and screened for improved potency,bioavailability,and other drug properties.Particularly,many of these oridonalogs have been tested against oridonin for tumor growth inhibition,potential for overcoming therapeutic resistance,and immunity modulation.This concise review seeks to summarize the advances in this field in light of identifying clinical-trial level drug candidates with the promise for treating progressive cancers and reversing chemoresistance.Xi Liu Jimin Xu Jia Zhou Qiang Shen 2021Genes & Diseases2021,8,4:2
9Nonlinear dynamic analysis of low viscosity fluid-lubricated tilting-pad journal bearing for different design parameters显示文摘To reveal nonlinear dynamic rules of low viscosity fluid-lubricated tilting-pad journal bearings(TPJBs),the effects of design parameters on journal center orbits and dynamic minimum film thicknesses of water-lubricated TPJBs with and without static loads are investigated.The hydrodynamic bearing force used in the nonlinear dynamic analysis is an approximate analytical solution including the turbulence effect.The results reveal the methods for vibration suppression and load capacity improvement and give an optimal pivot offset and clearance ratio that can maximize the minimum film thickness.The results also show that four-pad TPJBs with loads between pads are preferred due to good dynamic performance and load capacity.This study would provide some guidance for nonlinear design of low viscosity fluid-lubricated TPJBs under dynamic loads.Yingze JIN Fei CHEN Jimin XU Xiaoyang YUAN 2020Friction2020,8,5:2
10A new adaptive particle swarm optimization algorithm with dynamically changing inertia weight显示文摘Duan Yuhong Gao Yuelin Xu and Li Jimin 2006Intelligent Information Management Systems and Technologies2006,2,2:1
11Molecular mechanics on bonding and non-bonding interactions in (atom@C60)显示文摘Chuanbao Zhu Zhijin Xu Jimin Yan 1997Science in China Series B: Chemistry1997,,5:1
12Construction of versatile multilayered composite nanoparticles from a customized nanogel template显示文摘We present a highly adaptable design platform for multi-responsive,multilayered composite nanoparticles(MC-NPs)with fine-tunable functional layers.A flexible disulfide-linked nanogel template is obtained by a controlled in-situ gelation method,enabling a high degree of control over each successive layer.From this template,we optimize“smart”biomaterials with biofunctional surfaces,tunable drug release kinetics,and magnetic or pH-responsive functionality,fabricated into MC-NPs for targeted drug release and periosteum-mimetic structures for controlled rhBMP-2 release towards bone tissue formation in-vivo.Such a versatile platform for the design of MC-NPs is a powerful tool that shows considerable therapeutic potential in clinical fields such as oncology and orthopedics.Jian Zhang Jinpeng Jia Jimin P.Kim Fei Yang Xing Wang Hong Shen Sijia Xu Jian Yang Decheng Wu 2018Bioactive Materials2018,3,1:1
13Scaffolds for tendon and ligament repair: review of the efficacy of commercial products 显示文摘Chen Jimin Xu Jiake Wang Allan 2009Expert Review Med Devices2009,6,1:1
14A cadmium coordination polymer with a (4,6)-connected 3D network: syn- thesis, crystal structure, and luminescent properties 显示文摘XU Yun CHE Yunxia ZHENG Jimin 2012Z Anorg Allg Chem2012,638,:1
152,3,5,4,-tetxahydroxystilbene-2-O-p-d-glucoside ( THSG ) inducesraelanogenesis in B16 cells by MA Pkinase activation andtyrosinase upregulation 显示文摘Zequn Jiang Jimin Xu Minghai Long 2009Life Sciences2009,85,9:1
16Kinetics and mechanism of degradation of p-chloronitrobenzene in water by ozonation 显示文摘SHEN Jimin CHEN Zhonglin XU Zhenzhen 2008Journai of Hazardous Materials2008,152,3:1
17Chronology of relict lake deposits around the Suwalong paleolandslide in the upper Jinsha River, SE Tibetan Plateau: Implications to Holocene tectonic perturbations显示文摘Pengfei Wang Jian Chen Fuchu Dai Wei Long Chong Xu Jimin Sun Zhijiu Cui 2014Geomorphology2014,,:1
18Substrate and Functional Diversity of Lysine Acetylation Revealed by a Proteomics Survey显示文摘Sung Chan Kim Robert Sprung Yue Chen Yingda Xu Haydn Ball Jimin Pei Tzuling Cheng Yoonjung Kho Hao Xiao Lin Xiao Nick V. Grishin Michael White Xiang-Jiao Yang Yingming Zhao 2006Molecular Cell2006,,4:1
19Simultaneous synthesis of bimetallic@3D graphene electrocatalyst for HER and OER显示文摘Currently,the exploration of ultimate energy sources is a hot investigation area for researchers due to the swift diminution of fossil fuels and environmental pollution produced by the ignition of these fossil fuels[1-5].Hydrogen is an ideal alternative energy carrier and is considered to solve such problems due to its high energy density,sustainability,recyclability,and zero COx emission[6-9].Nabi ULLAH Meng XIE Shahid HUSSAIN Waleed YASEEN Sayyar Ali SHAH Bashir Adegbemiga YUSUF Chidinma Judith OLUICBO Haroon Ur RASHEED Yuanguo XU Jimin XIE 2021Frontiers of Materials Science2021,15,2:0
20In vitro and in vivo characterization of erythrosin B and derivatives against Zika virus显示文摘Zika virus(ZIKV)causes significant human diseases without specific therapy.Previously we found erythrosin B,an FDA-approved food additive,inhibited viral NS2B−NS3 interactions,leading to inhibition of ZIKV infection in cell culture.In this study,we performed pharmacokinetic and in vivo studies to demonstrate the efficacy of erythrosin B against ZIKV in 3D mini-brain organoid and mouse models.Our results showed that erythrosin B is very effective in abolishing ZIKV replication in the 3D organoid model.Although pharmacokinetics studies indicated that erythrosin B had a low absorption profile,mice challenged by a lethal dose of ZIKV showed a significantly improved survival rate upon oral administration of erythrosin B,compared to vehicle control.Limited structure−activity relationship studies indicated that most analogs of erythrosin B with modifications on the xanthene ring led to loss or reduction of inhibitory activities towards viral NS2B−NS3 interactions,protease activity and antiviral efficacy.In contrast,introducing chlorine substitutions on the isobenzofuran ring led to slightly increased activities,suggesting that the isobenzofuran ring is well tolerated for modifications.Cytotoxicity studies indicated that all derivatives are nontoxic to human cells.Overall,our studies demonstrated erythrosin B is an effective antiviral against ZIKV both in vitro and in vivo.Zhong Li Jimin Xu Yuekun Lang Xiangmeng Wu Saiyang Hu Subodh Kumar Samrat Anil M.Tharappel Lili Kuo David Butler Yongcheng Song Qing-Yu Zhang Jia Zhou Hongmin Li 2022Acta Pharmaceutica Sinica B2022,12,4:0
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