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Human neural stem cell-derived extracellular vesicles protect against ischemic stroke by activating the PI3K/AKT/mTOR pathway

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Neural Regeneration Research 2025年第11期20卷 3245-3258页

作者： Jiayi wang Mengke Zhao Dong Fu Meina wang Chao Han Zhongyue Lv liang wang Jing Liu Stem Cell Clinical Research Center The First Affiliated Hospital of Dalian Medical UniversityDalianLiaoning ProvinceChina Dalian Innovation Institute of Stem Cell and Precision Medicine DalianLiaoning ProvinceChina Institute(College)of Integrative Medicine Dalian Medical UniversityDalianLiaoning ProvinceChina

Human neural stem cell-derived extracellular vesicles exhibit analogous functions to their parental cells,and can thus be used as substitutes for stem cells in stem cell therapy,thereby mitigating the risks of stem cell therapy and advancing the frontiers of stem cell-derived *** lays a foundation for the development of potentially potent new treatment modalities for ischemic ***,the precise mechanisms underlying the efficacy and safety of human neural stem cell-derived extracellular vesicles remain unclear,presenting challenges for clinical *** promote the translation of therapy based on human neural stem cell-derived extracellular vesicles from the bench to the bedside,we conducted a comprehensive preclinical study to evaluate the efficacy and safety of human neural stem cell-derived extracellular vesicles in the treatment of ischemic *** found that administration of human neural stem cell-derived extracellular vesicles to an ischemic stroke rat model reduced the volume of cerebral infarction and promoted functional recovery by alleviating neuronal *** human neural stem cell-derived extracellular vesicles reduced neuronal apoptosis by enhancing phosphorylation of phosphoinositide 3-kinase,mammalian target of rapamycin,and protein kinase B,and these effects were reversed by treatment with a phosphoinositide 3-kinase *** findings suggest that human neural stem cell-derived extracellular vesicles play a neuroprotective role in ischemic stroke through activation of phosphoinositide 3-kinase/protein kinase B/mammalian target of rapamycin signaling ***,we showed that human neural stem cell-derived extracellular vesicles have a good in vivo safety ***,human neural stem cell-derived extracellular vesicles are a promising potential agent for the treatment of ischemic stroke.

关键词： behavior exosome extracellular vesicles ischemic stroke mammalian target of rapamycin(mTOR) middle cerebral artery occlusion neural stem cells neuronal apoptosis phosphoinositide 3-kinase(PI3K) protein kinase B(AKT)

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A coordinated planning strategy of energy storage allocation and line upgrading to increase photovoltaic consumption with lowest planning cost

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Science China Technological Sciences 2025年

作者： Bo ZHANG Yuqi JI Lu ZHANG Wei TANG Xiaohui ZHANG liang wang Haoran DING Hanchen MAO College of Information and Electrical Engineering China Agricultural University State Grid Heilongjiang Electric Power Research Institute State Grid Heilongjiang Electric Power Company Limited School of Electrical and Information Engineering Zhengzhou University of Light Industry

Random integration of massive distributed photovoltaic (PV) generation poses serious challenges to distribution networks. Voltage violations, line overloads, increased peak–valley differences, and power-flow reversals can occur at different locations, times, and severities. Traditional planning methods such as energy storage (ES) allocation and upgrading of lines may result in poor economics and low equipment utilization. This study proposes a distribution-network planning strategy that coordinates three planning mechanisms:ES allocation to substations and to feeders, and line upgrading. The proposed strategy achieved the lowest annual cost, considering the distribution network problems at different locations, times, and severities. A net load curve description method was first proposed considering economic planning and the uncertain distribution of loads and PVs. Second, a multistage optimization model for ES allocation and line upgrading was established based on the net load curves. Finally, an improved IEEE33 node system was used in the case study. The planning results show that the proposed coordinated planning strategy can address the problems caused by the random integration of massive distributed PVs, improve equipment utilization, and obtain the lowest total annual planning cost.

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《都灵草纸地图》及其史料价值

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古代文明（中英文） 2025年第1期19卷 20-29,M0003,M0004页

作者：王亮长春师范大学历史文化学院吉林长春130032

《都灵草纸地图》是目前考古发现仅存的一幅古埃及地图,也是迄今为止最古老的地形图之一。该地图绘制于第二十王朝国王拉美西斯四世统治时期,详细勾勒了埃及东部沙漠哈玛玛特谷地的山脉、河流、道路、建筑以及矿藏等资源分布和地理特征... 详细信息

《都灵草纸地图》是目前考古发现仅存的一幅古埃及地图,也是迄今为止最古老的地形图之一。该地图绘制于第二十王朝国王拉美西斯四世统治时期,详细勾勒了埃及东部沙漠哈玛玛特谷地的山脉、河流、道路、建筑以及矿藏等资源分布和地理特征,其中标注的金矿位置以及通往海洋的贸易线路是反映古埃及与努比亚、蓬特等地交往状况的重要史料。《都灵草纸地图》展现了古埃及人对地理空间、图像色彩的理解和运用状况,地图中采用的图绘和注记是考察早期文明区域地理和地图绘制方法的重要参考依据。

关键词：古埃及都灵草纸地图红海贸易

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玻璃体切割手术+全视网膜光凝术治疗糖尿病视网膜病变的效果研究

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临床医药实践 2025年第1期34卷 11-13,18页

作者：王亮徐州医科大学附属沭阳医院江苏宿迁223600

目的:评估玻璃体切割手术(PPV)联合全视网膜光凝术(PRP)在治疗糖尿病视网膜病变(DR)中的疗效,分析对患者视觉功能的影响。方法:将收治的54例符合手术治疗适应证的DR患者纳入研究,根据自愿原则分为对照组和治疗组。对照组24例行PPV治疗,... 详细信息

目的:评估玻璃体切割手术(PPV)联合全视网膜光凝术(PRP)在治疗糖尿病视网膜病变(DR)中的疗效,分析对患者视觉功能的影响。方法:将收治的54例符合手术治疗适应证的DR患者纳入研究,根据自愿原则分为对照组和治疗组。对照组24例行PPV治疗,治疗组30例接受PPV+PRP治疗。术前两组均注射康柏西普,比较分析两组治疗结果。结果:术后1周、术后1个月治疗组患者的最佳矫正视力值(BCVA)、眼内压(IOP)水平低于对照组,差异有统计学意义(P<0.05)。术后1周、术后1个月治疗组患者周边视野30°和60°范围内的光敏度高于对照组,差异有统计学意义(P<0.05)。术后6个月治疗组患者并发症发生率低于对照组,差异有统计学意义(P<0.05)。结论:玻璃体切割手术联合全视网膜光凝术治疗糖尿病视网膜病变疗效较好,可有效控制病情发展,保护患者视力。

关键词：糖尿病视网膜病变全视网膜光凝术玻璃体切割术康柏西普

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准噶尔盆地车排子凸起石炭系油气成藏主控因素及成藏模式

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岩性油气藏 2025年第1期37卷 126-136页

作者：桂诗琦罗群贺小标王千军王仕琛汪亮中国石油大学(北京)油气资源与探测国家重点实验室中国石油大学(北京)非常规油气科学技术研究院中国石化胜利油田分公司勘探开发研究院

利用地震、测井、试油、岩心的铸体薄片和物性分析资料及物理模拟实验，探讨了准噶尔盆地车排子凸起石炭系油气成藏要素的配置关系、富集规律以及油气成藏主控因素，总结了成藏模式。研究结果表明：(1)准噶尔盆地车排子凸起石炭系储层... 详细信息

利用地震、测井、试油、岩心的铸体薄片和物性分析资料及物理模拟实验，探讨了准噶尔盆地车排子凸起石炭系油气成藏要素的配置关系、富集规律以及油气成藏主控因素，总结了成藏模式。研究结果表明：(1)准噶尔盆地车排子凸起石炭系储层岩性主要为凝灰岩、安山岩及角砾岩，储集空间主要为次生孔隙与裂缝，孔隙度多小于8%，渗透率多为0.1～10.0 mD，属于特低孔、超低渗储层。(2)研究区油藏富集运聚为“断-储-壳”3要素联合控制，深大断裂是油气垂向运移通道；风化淋滤作用改善了储层物性，为油气富集提供了有效储集空间；石炭系及其上覆泥岩均较致密，与裂缝发育的火山岩储层形成了良好的储盖组合；走滑断裂与盖层的配置关系对油气垂向与横向运移具有重要控制作用。(3)研究区油藏整体上具有“双源供烃、多体系输导、多类型盖层、多层系含油、多种油藏类型、复式含油气区”的特征。不同区域、不同深度的油藏具有明显的差异，横向上，近源为“断毯输导、侧向充注、近源风化壳成藏模式”，远源为“双源供烃、多种输导类型、硬壳封盖、远源断壳体成藏模式”；纵向上，浅部为“双源供烃、多种输导类型、硬壳封盖、浅部风化壳成藏模式”，深部为“双源供烃、断裂输导、致密岩层封盖、深部断缝体成藏模式”。

关键词：火山岩油藏物理模拟深大断裂风化淋滤作用双源供烃石炭系车排子凸起准噶尔盆地

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Visualization of reticulophagy in living cells using an endoplasmic reticulum-targeted p62 mutant

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Science China(Life Sciences) 2017年第4期60卷 333-344页

作者： liang wang Britton Chance Center for Biomedical Photonics Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology Wuhan 430074 China MoE Key Laboratory for Biomedical Photonics Department of Biomedical Engineering Huazhong University of Science and Technology Wuhan 430074 China

Reticulophagy is a type of selective autophagy in which protein aggregate-containing and/or damaged endoplasmic reticulum(ER)fragments are engulfed for lysosomal degradation, which is important for ER homeostasis. Several chemical drugs and mutant proteins that promote protein aggregate formation within the ER lumen can efficiently induce reticulophagy in mammalian ***, the exact mechanism and cellular localization of reticulophagy remain unclear. In this report, we took advantage of the self-oligomerization property of p62/SQSTM1, an adaptor for selective autophagy, and developed a novel reticulophagy system based on an ER-targeted p62 mutant to investigate the process of reticulophagy in living cells. LC3 conversion analysis via western blot suggested that p62 mutant aggregate-induced ER stress triggered a cellular autophagic response. Confocal imaging showed that in cells with moderate aggregation conditions, the aggregates of ER-targeted p62 mutants were efficiently sequestered by autophagosomes, which was characterized by colocalization with the autophagosome precursor marker ATG16L1, the omegasome marker DFCP1, and the late autophagosomal marker LC3/GATE-16. Moreover, time-lapse imaging data demonstrated that the LC3-or DFCP1-positive protein aggregates are tightly associated with the reticular structures of the ER, thereby suggesting that reticulophagy occurs at the ER and that omegasomes may be involved in this process.

关键词： endoplasmic reticulum targeted mutant aggregate puncta homeostasis autophagy Figure lapse

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Performance-Centric Optimization for Racetrack Memory Based Register File on GPUs

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Journal of Computer Science & Technology 2016年第1期31卷 36-49页

作者： Yun liang Shuo wang Center for Energy-Efficient Computing and Applications ( CECA) School of Electrical Engineering and Computer Sciences Peking University Beijing 100871 China

The key to high performance for GPU architecture lies in its massive threading capability to drive a large number of cores and enable execution overlapping among threads. However, in reality, the number of threads that can simultaneously execute is often limited by the size of the register file on GPUs. The traditional SRAM-based register file takes up so large amount of chip area that it cannot scale to meet the increasing demand of GPU applications. Racetrack memory （RM） is a promising technology for designing large capacity register file on GPUs due to its high data storage density. However, without careful deployment of RM-based register file, the lengthy shift operations of RM may hurt the performance. In this paper, we explore RM for designing high-performance register file for GPU architecture. High storage density RM helps to improve the thread level parallelism （TLP）, but if the bits of the registers are not aligned to the ports, shift operations are required to move the bits to the access ports before they are accessed, and thus the read/write operations are delayed. We develop an optimization framework for RM-based register file on GPUs, which employs three different optimization techniques at the application, compilation, and architecture level, respectively. More clearly, we optimize the TLP at the application level, design a register mapping algorithm at the compilation level, and design a preshifting mechanism at the architecture level. Collectively, these optimizations help to determine the TLP without causing cache and register file resource contention and reduce the shift operation overhead. Experimental results using a variety of representative workloads demonstrate that our optimization framework achieves up to 29% （21% on average） performance improvement.

关键词： register file racetrack memory GPU

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Estimation for constant-stress accelerated life test from generalized half-normal distribution

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Journal of Systems Engineering and Electronics 2017年第4期28卷 810-816页

作者： liang wang Yimin Shi School of Mathematics and Statistics Xidian University Department of Applied Mathematics Northwestern Polytechnical University

In the constant-stress accelerated life test, estimation issues are discussed for a generalized half-normal distribution under a log-linear life-stress model. The maximum likelihood estimates with the corresponding fixed point type iterative algorithm for unknown parameters are presented, and the least square estimates of the parameters are also proposed. Meanwhile, confidence intervals of model parameters are constructed by using the asymptotic theory and bootstrap technique. Numerical illustration is given to investigate the performance of our methods.

关键词： accelerated life test maximum likelihood estimation least square method bootstrap technique asymptotic distribution

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Low complexity method for spreading sequence estimation of DSSS signal in non-cooperative communication systems

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Journal of Systems Engineering and Electronics 2009年第1期20卷 41-49页

作者： Chang liang wang Fuping wang Zanji Dept. of Electrical Engineering Tsinghua Univ. Beijing 100084 P. R. China

It is a necessary step to estimate the spreading sequence of direct sequence spread spectrum （DSSS） signal for blind despreading and demodulation in non-cooperative communications. Two innovative and effective detection statistics are proposed to implement the synchronization and spreading sequence estimation procedure. The proposed algorithm also has a low computational complexity with only linear additions and modifications. Theoretical analysis and simulation results show that the algorithm performs quite well in low SNR environment, and is much better than all the existing typical algorithms with a comprehensive consideration both in performance and computational complexity.

关键词： direct sequence spread spectrum detection statistic low complexity.

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Controlling the effect of a distant extremely thick igneous rock in overlying strata on coal mine disasters

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Mining Science and Technology 2010年第4期20卷 510-515页

作者： wang liang School of Safety Engineering China University of Mining & Technology Xuzhou 221116 China National Engineering Research Center for Coal & Gas Control China University of Mining & Technology Xuzhou 221008 China

Based on theoretical analysis, similarity simulation tests, numerical simulation analysis and field observations, we analyzed rock collapse and rules of fraction evolution of overlying rocks and studied the rules in controlling the effect of an extremely thick igneous rock, found above a main mining coal seam in an area prone to coal mine disasters in the Haizi Coal Mine. The results show that this igneous rock, called a "main key stratum", will not subside nor break for a long time, causing lower fractures and bed separations not to close. The presence of igneous rock plays an important role in rock bursts, mine floods, gas outburst and surface subsidence in coal mines. By analyzing the rules in controlling the effect of this igneous rock, we provide useful references for safety and high efficiency mining in coal mines under special geological conditions.

关键词： extremely thick igneous rock separation rock burst mine flood gas outburst surface subsidence

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