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Construction of cytopathic PK-15 cell model of classical swine fever virus

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Chinese Science Bulletin 2003年第9期48卷 887-891页

作者： WU Haixiang, ZHANG Chuyu, ZHENG Congyi, WANG Jiafu, PAN Zishu, LI Lei, cao Shen & yl GuanghuiInstitute of Virology, College of Life Sciences, Wuhan University, Wuhan 430072, ChinaCorrespondence should be addressed to Zhang Chuyu (e-mail: avlab@ ***) Institute of Virology College of Life Sciences Wuhan University Wuhan 430072 China

No cytopathic effect (CPE) can be observed on classical swine fever virus (CSFV) infected cell culture in vitro. This brings an obstacle to the researches on reciprocity between CSFV and host cells. Based on the construction of full-length genomic infectious Cdna clone of Chinese CSFV standard virulent Shimen strain, partial deletion is intro- duced into genomic Cdna to obtain a 7.5 kb subgenomic Cdna. A new subgenomic CSFV is derived from transfection with the subgenomic Cdna on PK-15 cells pre-infected by CSFV Shimen virus. Typical CPE induced by this subgenomic virus is observed on PK-15 cells. Coexistence of wild- type and subgenomic virus in cytopathic cell culture is dem- onstrated by RT-PCR detection in cytopathic cells. For conclusion, the construction of cytopathic cell model exploited a new way for researches on the molecular mechanism of CSFV pathogenesis.

关键词： PK-15 细胞结构病变细胞传统猪狂热病毒 CSFV cDNA 基因克隆

可吸收生物材料聚羟基乙酸与滑膜细胞共同构建组织工程化腱鞘

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中国组织工程研究与临床康复 2007年第40期11卷 8030-8033页

作者：曹德君徐梁刘伟韦敏曹谊林上海交通大学医学院附属第九人民医院整形外科上海市200011

目的:目前对于腱鞘的修复主要运用网腱膜、自体静脉和生物膜等腱鞘的替代品,其缺点是无生物学功能,不能达到真正意义上的结构与功能的重建。实验采用可吸收生物材料聚羟基乙酸与滑膜细胞共同构建组织工程化腱鞘,验证其可行性。方法:实验... 详细信息

目的:目前对于腱鞘的修复主要运用网腱膜、自体静脉和生物膜等腱鞘的替代品,其缺点是无生物学功能,不能达到真正意义上的结构与功能的重建。实验采用可吸收生物材料聚羟基乙酸与滑膜细胞共同构建组织工程化腱鞘,验证其可行性。方法:实验于2005-09/2007-03在上海市第九人民医院组织工程实验室完成。取Leghorn鸡滑膜腱鞘,体外消化培养获得滑膜细胞并大量扩增后,取第2代滑膜细胞与聚羟基乙酸生物材料复合,形成大小1.5cm×1.0cm,厚1.0mm左右的细胞生物学支架,体外培养6d后,将支架包绕在硅胶管上回植到裸鼠皮下及将支架直接回植于鸡爪原位腱鞘缺损处,以未接种细胞的单纯聚羟基乙酸包绕硅胶管为对照组,体内培养3,6周后取材观察。整个实验过程中对滑膜细胞及两种情况下构建形成的组织工程化腱鞘进行形态学和组织学观察。结果:①所获得的滑膜细胞分为A、B型滑膜细胞,A型滑膜细胞形态呈巨噬细胞样,B型滑膜细胞形态呈成纤维样,且随着滑膜细胞的扩增,A型滑膜细胞比例逐渐减少,到第2代时,基本全部为B型细胞。②在裸鼠皮下构建的组织工程化腱鞘第3周、第6周时有新生组织产生,且具有弹性,失去支撑后仍可保持形状,而单纯聚羟基乙酸对照组在第3周时只有少量新生组织,到第6周时新生组织消失。③在Leghorn鸡原位处构建的组织工程化腱鞘第3周时内壁光滑,与肌腱无粘连,第6周时形成与正常腱鞘相似鞘膜。结论:应用组织工程技术可以构建与正常组织相似的组织工程腱鞘。

关键词：组织工程化腱鞘滑膜细胞聚羟基乙酸

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海藻酸盐在软骨组织工程中的应用

中国组织工程研究与临床康复 2007年第48期11卷 9777-9780页

作者：曹月龙庞坚詹红生石印玉上海中医药大学附属曙光医院骨伤研究所上海市200021

学术背景:以生物材料作为细胞生长的三维支架,利用组织工程技术生产用于移植治疗的软骨组织是当前研究的重点。目的:对海藻酸盐在软骨组织工程中的应用情况作简述。检索策略:应用计算机检索PUBMED数据库1966-10/2007-07的相关文章,检索... 详细信息

学术背景:以生物材料作为细胞生长的三维支架,利用组织工程技术生产用于移植治疗的软骨组织是当前研究的重点。目的:对海藻酸盐在软骨组织工程中的应用情况作简述。检索策略:应用计算机检索PUBMED数据库1966-10/2007-07的相关文章,检索词为"Tissue engineering,Cartilage tissue engineering,Alginate",并限定文章语言种类为English。同时计算机检索万方及CNKI数据库1979-10/2005-10的相关文章,检索词为"组织工程、软骨、海藻酸盐",并限定文章语言种类为中文。对资料进行初审,并查看每篇文献后的引文。纳入标准:文章所述内容应与海藻酸盐在软骨组织工程中的应用情况相关。排除标准:重复研究或不相干文章。共收集到314篇相关文献,258篇文献符合纳入标准,排除的56篇文献为内容陈旧或重复。符合纳入标准的文献中,精选其中55篇用作研究分析。文献评价:文献的来源主要是海藻酸盐在软骨组织工程中的应用情况的研究。55篇符合纳入标准的文献中,中文23篇,英文32篇,其中动物实验和在体、离体、细胞学实验50篇,综述、述评类文献5篇。资料综合:通过对藻酸盐的生物学特性、不同组织来源的种子细胞与藻酸盐载体、不同塑形形式的藻酸盐载体及相关生物刺激因子(素)在以藻酸盐为载体的软骨组织工程中的应用等方面作了综述分析。结论:藻酸盐载体来源丰富,具有易塑形、易于细胞吸附、营养物质易于渗透等特点;但藻酸钙也存在体内吸收差和有一定抗原性等缺点。海藻酸盐构建的组织工程化软骨在力学性能、组织结构等方面与正常软骨相比还有一定的差距,有待进一步研究提高。

关键词：海藻酸盐软骨组织工程综述文献

大型游戏竞技馆建筑声学设计优化及施工技术研究

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建筑技术 2019年第10期50卷 1278-1280页

作者：黄君向峰易操中国建筑第二工程局有限公司

电竞场馆对音质的要求严格,重庆市忠县电竞场馆设计施工中通过对比赛大厅及有听音要求房间的吊顶和墙面的优化设计,提升了音质,利用吸声处理措施控制场馆噪声,达到了良好的视听效果,满足了综合型场馆的功能要求.

关键词：电竞场馆音质设计噪声控制视听效果

Optimizing the key parameter to accelerate the recovery of AMOC under a rapid increase of greenhouse gas forcing

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Atmospheric and Oceanic Science Letters 2025年第1期18卷 39-45页

作者： Haolan Ren Fei Zheng Tingwei cao Qiang Wang International Center for Climate and Environment Science(ICCES) Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina University of Chinese Academy of Sciences BeijingChina College of Oceanography Hohai UniversityNanjingChina CAS Key Laboratory of Ocean Circulation and Waves Institute of OceanologyChinese Academy of Sciences and Pilot National Laboratory for Marine Science and Technology(Qingdao)QingdaoChina

Atlantic Meridional Overturning Circulation(AMOC)plays a central role in long-term climate variations through its heat and freshwater transports,which can collapse under a rapid increase of greenhouse gas forcing in climate *** studies have suggested that the deviation of model parameters is one of the major factors in inducing inaccurate AMOC *** this work,with a low-resolution earth system model,the authors try to explore whether a reasonable adjustment of the key model parameter can help to re-establish the AMOC after its *** a new optimization strategy,the extra freshwater flux(FWF)parameter is determined to be the dominant one affecting the AMOC’s *** traditional ensemble optimal interpolation(EnOI)data assimilation and new machine learning methods are adopted to optimize the FWF parameter in an abrupt 4×CO_(2) forcing experiment to improve the adaptability of model parameters and accelerate the recovery of *** results show that,under an abrupt 4×CO_(2) forcing in millennial simulations,the AMOC will first collapse and then re-establish by the default FWF parameter ***,during the parameter adjustment process,the saltier and colder sea water over the North Atlantic region are the dominant factors in usefully improving the adaptability of the FWF parameter and accelerating the recovery of AMOC,according to their physical relationship with FWF on the interdecadal timescale.

关键词： Recovery of AMOC 4×CO_(2)forcing Key parameter Parameter estimation Data assimilation Machine learning

图形翻转视觉诱发电位在视神经管减压后视神经损伤不同时期的变化特征

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中国组织工程研究与临床康复 2007年第22期11卷 4340-4343页

作者：薛飞曹云莉李泽卿王秋萍吴昆旻季俊峰解放军南京军区南京总医院耳鼻咽喉-头颈外科江苏省南京市210002

目的:观察视神经损伤动物模型在损伤后和不同时期视神经管减压后视觉诱发电位的变化,了解创伤性视神经损伤的手术时机与疗效的关系。方法:实验于2005-03/05在解放军南京军区南京总医院动物实验中心完成。①实验分组:30只新西兰白兔随机... 详细信息

目的:观察视神经损伤动物模型在损伤后和不同时期视神经管减压后视觉诱发电位的变化,了解创伤性视神经损伤的手术时机与疗效的关系。方法:实验于2005-03/05在解放军南京军区南京总医院动物实验中心完成。①实验分组:30只新西兰白兔随机分为正常对照组、术后2d减压组、术后7d减压组、术后14d减压组、术后不减压组,每组6只。②造模:除正常对照组外,其余各组在视神经孔中塞入一细端为2mm直径的圆锥软硅胶,阻塞视神经孔,造成视神经的挤压伤。③指标检测:采用图形翻转视觉诱发电位检测损伤前、损伤后1h、减压前1h、减压后2周视功能变化,记录NPN曲线主波(P波)的绝对潜伏期、绝对波幅。正常对照组仅采集一组数据作为对照。结果:30只实验动物均进入结果分析。①正常对照组家兔图形翻转视觉诱发电位检查均引出典型NPN波型曲线,视神经挤压伤后1hNPN波形低阔扁平,P波潜伏期延长,波幅降低。②P波潜伏期:术后2d减压组减压后短于减压前[(71.25±8.51),(86.47±14.28)ms,P0.05);术后14d减压组减压后明显长于减压前[(158.73±15.16),(116.35±17.13)ms,P<0.05]。术后2d减压组和术后7d减压组短于术后不减压组(P<0.01)。术后7,14d减压组和术后不减压组明显长于正常对照组(P<0.01)。③P波波幅:术后2d减压组减压后高于减压前[(5.25±0.78),(4.42±0.42)μV,P<0.05]。术后2d减压组减压后低于术后7d减压组、术后14d减压组(P<0.01),术后14d减压组低于术后7d减压组(P<0.05);术后7d减压组、术后14d减压组、术后不减压组低于正常对照组(P<0.01)。结论:神经元继发性损伤是视功能进行性下降的重要原因,视神经减压术有利于减轻视神经间接损伤,较早期(损伤后48h以内)减压可阻止轴突继发性损伤,避免视功能进一步下降,并在一定程度上逆转视功能的损害。

关键词：视神经/损伤诱发电位,视觉动物模型

Unraveling post-growth mechanisms of monolayer CsPbBr3 nanocubes:Laser-enhanced transformations and cathodoluminescence-electron microscopy correlations

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Journal of Energy Chemistry 2025年第1期100卷 146-156页

作者： Mingxing Li Xiaoge Wang Xiaofan cao Zhiqun He Chunjun Liang Mingxing Chen Jing Ju Fangtian You Key Laboratory of Luminescence and Optical Information Ministry of Education Institute of Optoelectronic Technology Beijing Jiaotong University Beijing National Laboratory for Molecular Sciences (BNLMS) College of Chemistry and Molecular Engineering Peking University

Lead-halide perovskite nanoparticles（LHP NPs） are highly promising materials for next-generation displays and solid-state lighting due to their exceptional optical properties. However, their inherent instability presents a significant challenge. Recent advances have demonstrated that optoelectronic devices based on monolayer nanoparticle films exhibit both high luminescence efficiency and long-term *** research demonstrates that mobility limitations and anisotropic alignments in CsPbBr3nanocube monolayer films are key to their stabilization, hindering spontaneous growth through face-to-face fusion and resulting in the formation of connecting necks in a diagonal direction. Introducing laser irradiation confirmed this by significantly accelerating nanocubes growth, increasing mobility, and enhancing local structural ordering, leading to larger and more regularly shaped nanosheets. Fourier transform infrared spectroscopy and energy dispersive spectroscopy line-scan analyses indicated that laser irradiation did not disrupt the ligand structure. Transmission electron microscopy and correlative cathodoluminescence electron microscopy revealed the effects of post-growth and heterogeneous structures, including enhanced luminescence and inhomogeneous intensity in the nanosheets. These findings deepen the understanding of the post-growth mechanism of monolayer nanoparticles and the structure-emission correlation and highlight the unique role of laser irradiation in directing the formation of well-defined and regular nanostructures.

关键词： Post-growth mechanism Heterogeneous structure Single-particle spectroscopy Laser irradiation

Mitophagy in acute central nervous system injuries:regulatory mechanisms and therapeutic potentials

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Neural Regeneration Research 2025年第9期20卷 2437-2453页

作者： Siyi Xu Junqiu Jia Rui Mao Xiang cao Yun Xu Department of Neurology Nanjing Drum Tower HospitalClinical College of Jiangsu UniversityNanjingJiangsu ProvinceChina Department of Neurology Nanjing Drum Tower HospitalChinese Academy of Medical Science&Peking Union Medical CollegeNanjingJiangsu ProvinceChina Department of Neurology Nanjing Drum Tower HospitalAffiliated Hospital of Medical SchoolNanjing UniversityNanjingJiangsu ProvinceChina State Key Laboratory of Pharmaceutical Biotechnology and Institute of Translational Medicine for Brain Critical Diseases Nanjing UniversityNanjingJiangsu ProvinceChina Jiangsu Key Laboratory for Molecular Medicine Medical School of Nanjing UniversityNanjingJiangsu ProvinceChina Nanjing Neurology Medical Center NanjingJiangsu ProvinceChina

Acute central nervous system injuries,including ischemic stro ke,intracerebral hemorrhage,subarachnoid hemorrhage,traumatic brain injury,and spinal co rd injury,are a major global health *** optimal therapies and improving the long-term neurological functions of patients with acute central nervous system injuries are urgent *** are susceptible to damage after acute central nervous system injury,and this leads to the release of toxic levels of reactive oxygen species,which induce cell ***,a selective form of autophagy,is crucial in eliminating redundant or damaged mitochondria during these *** evidence has highlighted the significant role of mitophagy in acute central nervous system *** this review,we provide a comprehensive overview of the process,classification,and related mechanisms of *** also highlight the recent developments in research into the role of mitophagy in various acute central nervous system injuries and drug therapies that regulate *** the final section of this review,we emphasize the potential for treating these disorders by focusing on mitophagy and suggest future research paths in this area.

关键词： autophagy intracerebral hemorrhage ischemic stroke mitochondria mitochondrial biogenesis mitochondrial quality control mitophagy spinal cord injury subarachnoid hemorrhage traumatic brain injury

Quantitative Correlation between Group Connectivity Index and Property of Flotation Reagent

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Journal of Central South University 2000年第1期12卷 25-28页

作者： cao, YC Jiang, YR Xue, yl Wang, DZ Cent S Univ Technol Dept Mineral Engn Changsha 410083 Peoples R China

Topological method is applied firstly to calculate the group connectivity indexes of some flotation reagents for sulfide minerals and oxide minerals. The study reveals that some properties of flotation reagents, such as group electronegativity, energy criterion, solubility product of chemicals and maximum wavelength of ultraviolet absorbency, have linear correlation with the first order group connectivity index (GCI) of polar group, and the related coefficients are all larger than 0.900. The GCI can be used to characterize the structure of groups, and is a sort of new effective structural parameter to study the quantitative structure activity relationship of flotation reagents.

关键词： flotation reagents group connectivity index property quantitative correlation