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Spatial transcriptomics combined with single-nucleus RNA sequencing reveals glial cell heterogeneity in the human spinal cord

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Neural Regeneration Research 2025年第11期20卷 3302-3316页

作者： Yali chen Yiyong wei Jin Liu Tao Zhu cheng Zhou Donghang Zhang Department of Anesthesiology West China HospitalSichuan UniversityChengduSichuan ProvinceChina Laboratory of Anesthesia and Critical Care Medicine National-Local Joint Engineering Research Center of Translational Medicine of AnesthesiologyWest China HospitalSichuan UniversityChengduSichuan ProvinceChina Department of Anesthesiology Longgang District Maternity&Child Healthcare Hospital of Shenzhen City(Longgang Maternity and Child Institute of Shantou University Medical College)ShenzhenGuangdong ProvinceChina Department of Anesthesiology Affiliated Hospital of Zunyi Medical UniversityZunyiGuizhou ProvinceChina

Glial cells play crucial roles in regulating physiological and pathological functions,including sensation,the response to infection and acute injury,and chronic neurodegenerative *** cells include astrocytes,microglia,and oligodendrocytes in the central nervous system,and satellite glial cells and Schwann cells in the peripheral nervous *** the greater understanding of glial cell types and functional heterogeneity achieved through single-cell and single-nucleus RNA sequencing in animal models,few studies have investigated the transcriptomic profiles of glial cells in the human spinal ***,we used high-throughput single-nucleus RNA sequencing and spatial transcriptomics to map the cellular and molecular heterogeneity of astrocytes,microglia,and oligodendrocytes in the human spinal *** explore the conservation and divergence across species,we compared these findings with those from *** the human spinal cord,astrocytes,microglia,and oligodendrocytes were each divided into six distinct transcriptomic *** the mouse spinal cord,astrocytes,microglia,and oligodendrocytes were divided into five,four,and five distinct transcriptomic subclusters,*** comparative results revealed substantial heterogeneity in all glial cell types between humans and ***,we detected sex differences in gene expression in human spinal cord glial ***,in all astrocyte subtypes,the levels of NEAT1 and CHI3L1 were higher in males than in females,whereas the levels of CST3 were lower in males than in *** all microglial subtypes,all differentially expressed genes were located on the sex *** addition to sex-specific gene differences,the levels of MT-ND4,MT2A,MT-ATP6,MT-CO3,MT-ND2,MT-ND3,and MT-CO_(2) in all spinal cord oligodendrocyte subtypes were higher in females than in ***,the present dataset extensively characterizes glial cell heterogeneity and offers a valuable resource for explo

关键词： astrocyte glial cell human microglia oligodendrocyte sex differentiation single-nucleus RNA sequencing spatial transcriptomics species variation spinal cord

非赢利性社区服务组织——解决我国劳动力绝对过剩问题的有效途径

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四川大学学报（哲学社会科学版） 2001年第6期 24-28页

作者：曹志强陈维政四川大学工商管理学院硕士研究生四川成都610064

当今全球劳动力绝对过剩问题已逐渐被人们所认识 ,这一问题在中国的表现尤其突出。在该问题的对策研究上 ,国外非赢利性社区服务组织的成功经验。

关键词：剩余劳动力绝对过剩社区服务社区管理社区教育非赢利性社区服务组织社区心理咨询社区娱乐

离子色谱法测定诺丽果粉中常见有机酸和阴离子含量

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食品工业科技 2017年第3期38卷 305-308,313页

作者：沈宋利林智威陈梅兰浙江树人大学生物与环境工程学院浙江杭州310015

采用戴安ICS-5000离子色谱建立了诺丽果粉中14种有机酸和阴离子的分离测定方法。实验利用电导检测器对诺丽果粉中常见有机酸和阴离子进行测定。采用Ion Pac AS11-HC分析柱(带Ion Pac AG11-HC保护柱)为色谱柱,以ASRS 300(4 mm)自循环电... 详细信息

采用戴安ICS-5000离子色谱建立了诺丽果粉中14种有机酸和阴离子的分离测定方法。实验利用电导检测器对诺丽果粉中常见有机酸和阴离子进行测定。采用Ion Pac AS11-HC分析柱(带Ion Pac AG11-HC保护柱)为色谱柱,以ASRS 300(4 mm)自循环电抑制模式,KOH作为淋洗液作梯度淋洗,流速为1.0 m L/min,柱温30℃为色谱条件实现诺丽果粉中有机酸和阴离子理想分离。方法拥有良好的线性(r≥0.9988)、检出限(≤0.508 mg/L)、回收率(91.50%~107.22%)和重复性(RSD 0.18%~5.2%,n=8)。诺丽果粉中含有的有机酸和阴离子主要是乳酸、苹果酸、草酸、柠檬酸、氯离子、硫酸根和磷酸根。其中乳酸含量为5.893 mg/g,苹果酸含量为74.631 mg/g,草酸含量为9.631 mg/g,柠檬酸含量为10.826 mg/g,氯离子含量为27.930 mg/g,硫酸根含量为4.226 mg/g,磷酸根含量为7.747 mg/g,丙酮酸含量为3.965 mg/g,其余几种分析组分未检出。该方法准确可靠,可用于诺丽果粉中有机酸和无机阴离子的定性、定量分析。

关键词：有机酸阴离子诺丽果粉离子色谱

Study on the expression of Caveolin-1 in Osteoporosis with ovariectomy of mice

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Study on the expression of Caveolin-1 in Osteoporosis with o...

R125/R600a混合工质蒸发器结构优化

湖南省生理科学会2008年度学术年会

作者： Yu Guo~1,Shao-xin Gong~2,zhi-wei chen~2,et al (1 Department of Pharmacy,2 The First Affiliated Hospital,University of South China,Hengyang, Hunan 421001)

＜正＞Objective:To investigate the expression of caveolin-1 in osteoporosis with ovariectomy of mice. Methods:The model of osteoporosis was established by ovariectomy of *** bone mineral density（BMD）was measured wit...

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实验室研究与探索 2016年第9期35卷 20-23页

作者：王方范晓伟连之伟陈洁付一珂中原工学院能源与环境学院河南郑州450007

为提高换热效率,从传热和压降的耦合角度出发,针对R125/R600a混合工质蒸发器建立了结构优化的理论数学模型,分析了管径、蒸发温度对管长优化结果的影响,并对理论模型进行验证。结果发现,R125/R600a混合工质蒸发器存在一最优管长,且最优... 详细信息

为提高换热效率,从传热和压降的耦合角度出发,针对R125/R600a混合工质蒸发器建立了结构优化的理论数学模型,分析了管径、蒸发温度对管长优化结果的影响,并对理论模型进行验证。结果发现,R125/R600a混合工质蒸发器存在一最优管长,且最优长度随管径的增大而增加;随着蒸发温度的增大最优管长也呈现增大趋势。由此可见,小管径的蒸发器最优管长更短,结构更为紧凑,制造成本更低,而换热效率更高,同时制冷剂的流动摩擦阻力也会更小。研究结果对空调、冰箱、热泵系统的工质选用及运行工况的选择具有借鉴作用。

关键词： R125/R600a 蒸发器结构优化

MoS_(2)Lubricate‑Toughened MXene/ANF Composites for Multifunctional Electromagnetic Interference Shielding

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Nano-Micro Letters 2025年第2期17卷 358-371页

作者： Jiaen Wang wei Ming Longfu chen Tianliang Song Moxi Yele Hao Zhang Long Yang Gegen Sarula Benliang Liang Luting Yan Guangsheng Wang School of Physical Science and Engineering Beijing Jiaotong UniversityBeijing 100044People’s Republic of China Key Laboratory of Bio‑Inspired Smart Interfacial Science and Technology of Ministry of Education School of ChemistryBeihang UniversityBeijing 100191People’s Republic of China

The design and fabrication of high toughness electromagnetic interference(EMI)shielding composite films with diminished reflection are an imperative task to solve electromagnetic pollution *** MXene/ANF(aramid nanofibers)–MoS_(2)composite films with nacre-like layered structure here are fabricated after the introduction of MoS_(2)into binary MXene/ANF composite *** introduction of MoS_(2)fulfills an impressive“kill three birds with one stone”improvement effect:lubrication toughening mechanical performance,reduction in secondary reflection pollution of electromagnetic wave,and improvement in the performance of photothermal *** the introduction of MoS_(2)into binary MXene/ANF(mass ratio of 50:50),the strain to failure and tensile strength increase from 22.1±1.7%and 105.7±6.4 MPa and to 25.8±0.7%and 167.3±9.1 MPa,*** toughness elevates from 13.0±4.1 to 26.3±0.8 MJ m^(−3)(~102.3%)*** the reflection shielding effectiveness(SE_(R))of MXene/ANF(mass ratio of 50:50)decreases~10.8%.EMI shielding effectiveness(EMI SE)elevates to 41.0 dB(8.2–12.4 GHz);After the introduction of MoS_(2)into binary MXene/ANF(mass ratio of 60:40),the strain to failure increases from 18.3±1.9%to 28.1±0.7%(~53.5%),the SE_(R)decreases~22.2%,and the corresponding EMI SE is 43.9 *** MoS_(2)also leads to a more efficient photothermal conversion performance(~45 to~55℃).Additionally,MXene/ANF–MoS_(2)composite films exhibit excellent electric heating performance,quick temperature elevation(15 s),excellent cycle stability(2,2.5,and 3 V),and long-term stability(2520 s).Combining with excellent mechanical performance with high MXene content,electric heating performance,and photothermal conversion performance,EMI shielding ternary MXene/ANF–MoS_(2)composite films could be applied in many industrial *** work broadens how to achieve a balance between mechanical properties and versatility of composites in the case of high-function fillers.

关键词： MXene-MoS_(2) Lubrication toughening EMI shielding Photothermal conversion Electric heating performance

Precise gradient separation of nanoparticles using reduced graphene oxide-polyoxomolybdate membranes

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Science China Chemistry 2025年第01期 209-216页

作者： Yixin Yang Wanlei Zhao Ruoxuan Zheng Hongqiang Li wei chen Yu-Fei Song State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Quzhou Institute for Innovation in Resource Chemical Engineering

The purification and size sieving of nanoparticles （NPs） represents a significant scientific ***,the r GO-polyoxometalates (POMs=PMo12,Mo132and Mo368) membranes were fabricated successfully via a simple and scalable POMsassisted in-situ photoreduction *** the mass ratio of r GO to PMo12was 1:30,the resultant r GO-PMo12membranes with highly ordered and uniform nanochannels of 1.0 nm can be obtained,which showed an accurate carbon quantum dots（CQDs） separation with a cut-off size approximately 1.0 *** increase of the size of the interlayered POMs from PMo12（1.0 nm）,{Mo132}（2.9 nm） to{Mo368}（3.8 nm）,the resultant r GO-PMo12,r GO-Mo132and r GO-Mo368exhibited precise gradient separation of CQDs and Au nanoparticles by size exclusion *** results pave a promising way to construct new twodimensional （2D） membranes for highly efficient size-selective separation.

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PI3K/AKT signaling and neuroprotection in ischemic stroke:molecular mechanisms and therapeutic perspectives

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Neural Regeneration Research 2025年第10期20卷 2758-2775页

作者： Tianlong Liu Xiaolin Li Xiaowei Zhou wei chen Aidong Wen Minna Liu Yi Ding Department of Pharmacy Xijing HospitalFourth Military Medical UniversityXi’anShaanxi ProvinceChina Department of Pharmacy The 940 Hospital of Joint Logistics Support Forces of Chinese PLALanzhouGansu ProvinceChina Department of Pharmacy The 944 Hospital of Joint Logistics Support Forces of Chinese PLAJiuquanGansu ProvinceChina Department of Nephrology The 940 Hospital of Joint Logistics Support Forces of Chinese PLALanzhouGansu ProvinceChina

It has been reported that the PI3K/AKT signaling pathway plays a key role in the pathogenesis of ischemic *** a result,the development of drugs targeting the PI3K/AKT signaling pathway has attracted increasing attention from *** article reviews the pathological mechanisms and advancements in research related to the signaling pathways in ischemic stroke,with a focus on the PI3K/AKT signaling *** key findings include the following:(1)The complex pathological mechanisms of ischemic stroke can be categorized into five major types:excitatory amino acid toxicity,Ca^(2+)overload,inflammatory response,oxidative stress,and apoptosis.(2)The PI3K/AKT-mediated signaling pathway is closely associated with the occurrence and progression of ischemic stroke,which primarily involves the NF-κB,NRF2,BCL-2,mTOR,and endothelial NOS signaling pathways.(3)Natural products,including flavonoids,quinones,alkaloids,phenylpropanoids,phenols,terpenoids,and iridoids,show great potential as candidate substances for the development of innovative anti-stroke medications.(4)Recently,novel therapeutic techniques,such as electroacupuncture and mesenchymal stem cell therapy,have demonstrated the potential to improve stroke outcomes by activating the PI3K/AKT signaling pathway,providing new possibilities for the treatment and rehabilitation of patients with ischemic *** investigations should focus on the direct regulatory mechanisms of drugs targeting the PI3K/AKT signaling pathway and their clinical translation to develop innovative treatment strategies for ischemic stroke.

关键词： apoptosis autophagy inflammation ischemic stroke neuroprotection oxidative stress pathogenesis phosphatidylinositol 3-kinase protein kinase B therapeutics

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斑蝥素及其药理作用研究进展

生命科学仪器 2009年第3期7卷 3-6页

作者：尹璇陈志伟山东理工大学分析测试中心山东淄博255049

斑蝥属鞘翅目芫菁科昆虫,是我国最早发现的具有抗肿瘤作用的中药材之一,其药用成分是一种单萜类有毒物质——斑蝥素。本为就斑蝥素的资源分布、生化特性、在虫体中的分布及药理学作用进行了综述,为人类进一步认识和利用斑蝥素提供了理... 详细信息

斑蝥属鞘翅目芫菁科昆虫,是我国最早发现的具有抗肿瘤作用的中药材之一,其药用成分是一种单萜类有毒物质——斑蝥素。本为就斑蝥素的资源分布、生化特性、在虫体中的分布及药理学作用进行了综述,为人类进一步认识和利用斑蝥素提供了理论基础。

关键词：斑蝥素分布药理学作用应用