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Unraveling brain aging through the lens of oral microbiota

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Neural Regeneration Research 2025年第7期20卷 1930-1943页

作者： Qinchao Hu Si Wang Weiqi Zhang Jing qu Guang-hui Liu State Key Laboratory of Membrane Biology Institute of ZoologyChinese Academy of SciencesBeijingChina Hospital of Stomatology Guanghua School of StomatologyGuangdong Provincial Key Laboratory of StomatologySun Yat-sen UniversityGuangzhouGuangdong ProvinceChina Advanced Innovation Center for Human Brain Protection and National Clinical Research Center for Geriatric Disorders Xuanwu HospitalCapital Medical UniversityBeijingChina Aging Translational Medicine Center International Center for Aging and CancerBeijing Municipal Geriatric Medical Research CenterXuanwu HospitalCapital Medical UniversityBeijingChina CAS Key Laboratory of Genomic and Precision Medicine Beijing Institute of GenomicsChinese Academy of Sciences and China National Center for BioinformationBeijingChina University of Chinese Academy of Sciences BeijingChina Institute for Stem Cell and Regeneration Chinese Academy of SciencesBeijingChina Aging Biomarker Consortium BeijingChina State Key Laboratory of Stem Cell and Reproductive Biology Institute of ZoologyChinese Academy of SciencesBeijingChina Beijing Institute for Stem Cell and Regenerative Medicine BeijingChina

The oral cavity is a complex physiological community encompassing a wide range of *** of oral microbiota can lead to various oral infectious diseases,such as periodontitis and tooth decay,and even affect systemic health,including brain aging and neurodegenerative *** studies have highlighted how oral microbes might be involved in brain aging and neurodegeneration,indicating potential avenues for intervention *** this review,we summarize clinical evidence demonstrating a link between oral microbes/oral infectious diseases and brain aging/neurodegenerative diseases,and dissect potential mechanisms by which oral microbes contribute to brain aging and *** also highlight advances in therapeutic development grounded in the realm of oral microbes,with the goal of advancing brain health and promoting healthy aging.

关键词： Alzheimer's disease brain aging multiple sclerosis neurodegeneration neurodegenerative diseases oral microbiota Parkinson's disease periodontitis bacteria Porphyromonas gingivalis

Exosomes:the next-generation therapeutic platform for ischemic stroke

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Neural Regeneration Research 2025年第5期20卷 1221-1235页

作者： Wenjing Yin Hongyin Ma yang qu Jiaxin Ren Yingying Sun Zhen-Ni Guo Yi yang Stroke Center Department of NeurologyFirst Hospital of Jilin UniversityChangchunJilin ProvinceChina Neuroscience Research Center Department of NeurologyFirst Hospital of Jilin UniversityChangchunJilin ProvinceChina

Current therapeutic strategies for ischemic stroke fall short of the desired objective of neurological functional ***,there is an urgent need to develop new methods for the treatment of this *** are natural cell-derived vesicles that mediate signal transduction between cells under physiological and pathological *** have low immunogenicity,good stability,high delivery efficiency,and the ability to cross the blood–brain *** physiological properties of exosomes have the potential to lead to new breakthroughs in the treatment of ischemic *** rapid development of nanotechnology has advanced the application of engineered exosomes,which can effectively improve targeting ability,enhance therapeutic efficacy,and minimize the dosages *** in technology have also driven clinical translational research on *** this review,we describe the therapeutic effects of exosomes and their positive roles in current treatment strategies for ischemic stroke,including their antiinflammation,anti-apoptosis,autophagy-regulation,angiogenesis,neurogenesis,and glial scar formation reduction ***,it is worth noting that,despite their significant therapeutic potential,there remains a dearth of standardized characterization methods and efficient isolation techniques capable of producing highly purified *** optimization strategies should prioritize the exploration of suitable isolation techniques and the establishment of unified workflows to effectively harness exosomes for diagnostic or therapeutic applications in ischemic ***,our review aims to summarize our understanding of exosome-based treatment prospects in ischemic stroke and foster innovative ideas for the development of exosome-based therapies.

关键词： blood–brain barrier electroacupuncture engineering exercise exosomes ischemic stroke mesenchymal stem cells microglia neuroprotection stents

Boosting bidirectional sulfur conversion enabled by introducing boron-doped atoms and phosphorus vacancies in Ni2P for lithium-sulfur batteries

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Journal of Energy Chemistry 2025年第1期100卷 760-769页

作者： Lin Peng Yu Bai Hang Li Meixiu qu Zhenhua Wang Kening Sun Advanced Research Institute of Multidisciplinary Science Beijing Institute of Technology Beijing Key Laboratory of Chemical Power Source and Green Catalysis School of Chemistry and Chemical Engineering Beijing Institute of Technology

Lithium-sulfur （Li-S） batteries have gained great attention due to the high theoretical energy density and low cost,yet their further commercialization has been obstructed by the notorious shuttle effect and sluggish redox ***,we supply a strategy to optimize the electron structure of Ni2P by concurrently introducing B-doped atoms and P vacancies in Ni2P （Vp-B-Ni2P）,thereby enhancing the bidirectional sulfur *** study indicates that the simultaneous introduction of B-doped atoms and P vacancies in Ni2P causes the redistribution of electron around Ni atoms,bringing about the upward shift of d-band center of Ni atoms and effective d-p orbital hybridization between Ni atoms and sulfur species,thus strengthening the chemical anchoring for lithium polysulfides （LiPSs） as well as expediting the bidirectional conversion kinetics of sulfur ***,theoretical calculations reveal that the incorporation of B-doped atoms and P vacancies in Ni2P selectively promotes Li2S dissolution and nucleation ***,the Li-S batteries with Vp-B-Ni2P-separators present outstanding rate ability of 777 m A h g-1at 5 C and high areal capacity of 8.03 mA h cm-2under E/S of 5μL mg-1and sulfur loading of 7.20 mg *** work elucidates that introducing heteroatom and vacancy in metal phosphide collaboratively regulates the electron structure to accelerate bidirectional sulfur conversion.

关键词： Lithium sulfur batteries

Flexible Strain Sensors with Ultra-High Sensitivity and Wide Range Enabled by Crack-Modulated Electrical Pathways

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NANO-MICRO LETTERS 2025年第1期17卷 1-19页

作者： Bai, Yunzhao Zhou, Yunlei Wu, Xuanyu Yin, Mengfei Yin, Liting qu, Shiyuan Zhang, Fan Li, Kan Huang, Yongan Huazhong Univ Sci & Technol State Key Lab Intelligent Mfg Equipment & Technol Wuhan 430074 Peoples R China Huazhong Univ Sci & Technol Flexible Elect Res Ctr Wuhan 430074 Peoples R China Xidian Univ Hangzhou Inst Technol Hangzhou 311200 Peoples R China Xidian Univ Sch Mechanoelect Engn Xian 710071 Peoples R China Univ Southern Calif Dept Aerosp & Mech Engn Los Angeles CA 90089 USA

This study presents a breakthrough in flexible strain sensor technology with the development of an ultra-high sensitivity and wide-range sensor, addressing the critical challenge of reconciling sensitivity with measurement range. Inspired by the structure of bamboo slips, we introduce a novel approach that utilises liquid metal to modulate the electrical pathways within a cracked platinum fabric electrode. The resulting sensor demonstrates a gauge factor greater than 108 and a strain measurement capability exceeding 100%. The integration of patterned liquid metal enables customisable tuning of the sensor's response, while the porous fabric structure ensures superior comfort and air permeability for the wearer. Our design not only optimises the sensor's performance but also enhances the electrical stability that is essential for practical applications. Through systematic investigation, we reveal the intrinsic mechanisms governing the sensor's response, offering valuable insights for the design of wearable strain sensors. The sensor's exceptional performance across a spectrum of applications, from micro-strain to large-strain detection, highlights its potential for a wide range of real-world uses, demonstrating a significant advancement in the field of flexible electronics.

关键词： Flexible strain sensor Fabric Crack Response regulation Epidermal device

Bioinspired Ultrasensitive Flexible Strain Sensors for Real-Time Wireless Detection of Liquid Leakage

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NANO-MICRO LETTERS 2025年第1期17卷 1-18页

作者： Zhou, Weilong Du, Yu Chen, Yingying Zhang, Congyuan Ning, Xiaowei Xie, Heng Wu, Ting Hu, Jinlian qu, Jinping Huazhong Univ Sci & Technol Sch Chem & Chem Engn Key Lab Mat Chem Energy Convers & Storage Minist EducHubei Key Lab Mat Chem & Serv Failure Wuhan 430074 Peoples R China Huazhong Univ Sci & Technol Hubei Engn Res Ctr Biomat & Med Protect Mat Sch Chem & Chem Engn Wuhan 430074 Peoples R China Wuhan Inst Technol Sch Mat Sci & Engn Wuhan 430205 Peoples R China City Univ Hong Kong Dept Biomed Engn Hong Kong 999077 Peoples R China

Micro-extrusion compression molding and surface modification were proposed for the mass fabrication of a superhydrophobic thermoplastic polyurethane sensor (TCGS).Inspired by scorpions, TCGS features Archimedean spiral crack arrays and micropores, achieving 218.13 sensitivity at 2% strain, a 4300% increase, and over 5000 usage cycles of *** robust superhydrophobicity of TCGS improves sensitivity and stability for detecting small-scale liquid leakage, allowing precise monitoring across various sizes and compositions while providing early warnings in various scenarios. Liquid leakage of pipeline networks not only results in considerable resource wastage but also leads to environmental pollution and ecological imbalance. In response to this global issue, a bioinspired superhydrophobic thermoplastic polyurethane/carbon nanotubes/graphene nanosheets flexible strain sensor (TCGS) has been developed using a combination of micro-extrusion compression molding and surface modification for real-time wireless detection of liquid leakage. The TCGS utilizes the synergistic effects of Archimedean spiral crack arrays and micropores, which are inspired by the remarkable sensory capabilities of scorpions. This design achieves a sensitivity of 218.13 at a strain of 2%, which is an increase of 4300%. Additionally, it demonstrates exceptional durability by withstanding over 5000 usage cycles. The robust superhydrophobicity of the TCGS significantly enhances sensitivity and stability in detecting small-scale liquid leakage, enabling precise monitoring of liquid leakage across a wide range of sizes, velocities, and compositions while issuing prompt alerts. This provides critical early warnings for both industrial pipelines and potential liquid leakage scenarios in everyday life. The development and utilization of bioinspired ultrasensitive flexible strain sensors offer an innovative and effective solution for the early wireless detection of liquid leakage.

关键词： Thermoplastic polyurethane Bioinspired Cracks Liquid leakage Flexible strain sensor

X-ray tomography analysis of aluminum alloy powder compaction

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Rare Metals 2022年第9期41卷 3244-3250页

作者： Shi-Di yang Rui-Jie Zhang Xuan-hui qu State Key Laboratory for Advanced Metals and Materials University of Science and Technology BeijingBeijing100083China School of Material Science and Engineering University of Science and Technology BeijingBeijing100083China

Aluminum alloy green compacts obtained by single-action compaction in lubricated and unlubricated dies were investigated by X-ray *** the purpose of obtaining the relationship between the density of green compact and the gray value of reconstructed images,linear fitting was *** results show that these data have excellent linear ***,a new method for analysis of compaction process was presented in this *** quantitative analysis of the density and compressive pressure distribution in green compacts was *** compressive pressure transmitted ratio and friction index were also *** is found that the lubricated die wall has better effects on the density homogeneity at lower applied compressive *** compaction process,the densification of powder particles in the die mainly occurs in the lower part of the green compact and the factor which mainly influences the friction between die wall and green compact is the applied compressive pressure.

关键词： Green compact Density distribution Compaction Compressive pressure distribution

High recycling Fe_(3)O_(4)-CdTe nanocomposites for the detection of organophosphorothioate pesticide chlorpyrifos

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Green Energy & Environment 2022年第2期7卷 229-235页

作者： Yanxue Guo hui Liu Dong Chen Jianglan qu Jun yang Department of Applied Chemistry Key Laboratory of Urban Agriculture(North China)Ministry of Agriculture and Rural AffairsBeijing University of AgricultureBeijing102206China State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing100190China University of Chinese Academy of Sciences No.19A Yuquan RoadBeijing100049China Zhongke Langfang Institute of Process Engineering Fenghua Road No 1Langfang Economic&Technical Development ZoneHebei Province065001China

To alleviate the secondary contamination of our environment when using quantum dots(QDs) to detect the organophosphorothioate pesticides(OPPs),we herein report a strategy to assemble magnetic Fe_(3)O_(4) nanoparticles and luminescent Cd Te quantum dots(QDs) into a composite nanosystem,which possesses both the magnetic property of Fe_(3)O_(4) nanoparticles and the luminescent character of Cd Te QDs,for the detection of chlorpyrifos,one of the typical *** strategy involves the isolated synthesis of magnetic Fe_(3)O_(4) nanoparticles with positive charges and luminescent Cd Te QDs with negative charges,and their subsequent assembly by electrostatic *** as-prepared Fe_(3)O_(4)-Cd Te nanocomposites have a detection limit as low as 10 ppb for chlorpyrifos,and are also selective for the OPPs with a phosphorothioate moiety(P=S bond).In specific,the Fe_(3)O_(4)-Cd Te nanocomposites can be conveniently harvested by a normal magnet,and the recycling rate for both Cd and Fe determined by inductively coupled plasma atomic emission spectroscopy(ICP-AES) is higher than 96%,showing great potential in alleviating the Cd pollution on the environment.

关键词： interaction quantum charges

纤维连接蛋白对人神经干细胞诱导分化为少突胶质前体细胞的影响

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中国组织工程研究 2025年第31期29卷 6661-6666页

作者：汪兆艳王倩刘卫鹏杨辉栾佐屈素清中国人民解放军总医院第六医学中心儿科北京市100048

背景:少突胶质前体细胞是治疗脑白质损伤性疾病的种子细胞,建立高效稳定扩增的体外诱导分化方法是实现临床转化研究的重要前提。目的:探讨纤维连接蛋白对人神经干细胞来源少突胶质前体细胞增殖、迁移和分化等生物学特性的影响。方法:将... 详细信息

背景:少突胶质前体细胞是治疗脑白质损伤性疾病的种子细胞,建立高效稳定扩增的体外诱导分化方法是实现临床转化研究的重要前提。目的:探讨纤维连接蛋白对人神经干细胞来源少突胶质前体细胞增殖、迁移和分化等生物学特性的影响。方法:将悬浮培养的人神经干细胞用Accutase消化成单细胞,通过流式细胞术检测特异性标志物Nestin、Sox2、Vimentin、CD133、Musashi的表达。然后将人神经干细胞单细胞重悬于少突胶质前体细胞培养基,接种于不同质量浓度纤维连接蛋白(0,1,2.5,5,10μg/mL)包被的6孔板中,培养7 d后Accutase消化进行传代,锥虫蓝染色计数细胞,选择扩增能力最强的纤维连接蛋白包被与未用纤维连接蛋白包被的少突胶质前体细胞进行下一步实验,Transwell小室检测细胞迁移能力,流式细胞术检测Olig2、Sox10、PDGFR-α的表达。将少突胶质前体细胞向少突胶质细胞诱导分化3周,免疫荧光染色检测分化细胞Galc的表达。结果与结论:①人神经干细胞呈悬浮球状生长,流式细胞术检测结果显示,人神经干细胞高表达Nestin、Sox2、Vimentin、CD133和Musashi;②由人神经干细胞诱导的少突胶质前体细胞的胞体为圆形或椭圆形,折光性强,有双极或三级突起结构;与0μg/mL纤维连接蛋白包被组比较,2.5,5,10μg/mL纤维连接蛋白包被组少突胶质前体细胞的扩增能力显著增强(P0.05);④Transwell小室检测结果显示,与0μg/mL纤维连接蛋白包被组比较,10μg/mL纤维连接蛋白包被组少突胶质前体细胞的迁移能力增加(P0.05)。结果表明,纤维连接蛋白质量浓度为10μg/mL时对少突胶质前体细胞的增殖和迁移作用最强,但不影响少突胶质前体细胞特异性标志物Olig2、Sox10和PDGFR-α的表达及其向少突胶质细胞的分化。

关键词：纤维连接蛋白神经干细胞少突胶质前体细胞少突胶质细胞细胞增殖细胞分化工程化干细胞工程化细胞

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Dynamic Regulation of Hydrogen Bonding Networks and Solvation Structures for Synergistic Solar‑Thermal Desalination of Seawater and Catalytic Degradation of Organic Pollutants

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Nano-Micro Letters 2025年第2期17卷 548-565页

作者： Ming‑Yuan Yu Jing Wu Guang Yin Fan‑Zhen Jiao Zhong‑Zhen Yu Jin qu Beijing Key Laboratory of Advanced Functional Polymer Composites Beijing University of Chemical TechnologyBeijing 100029People’s Republic of China State Key Laboratory of Organic‑Inorganic Composites College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029People’s Republic of China

Although solar steam generation strategy is efficient in desalinating seawater,it is still challenging to achieve continuous solar-thermal desalination of seawater and catalytic degradation of organic ***,dynamic regulations of hydrogen bonding networks and solvation structures are realized by designing an asymmetric bilayer membrane consisting of a bacterial cellulose/carbon nanotube/Co_(2)(OH)_(2)CO_(3)nanorod top layer and a bacterial cellulose/Co_(2)(OH)_(2)CO_(3)nanorod(BCH)bottom ***,the hydrogen bonding networks inside the membrane can be tuned by the rich surface–OH groups of the bacterial cellulose and Co_(2)(OH)_(2)CO_(3)as well as the ions and radicals in situ generated during the catalysis ***,both SO_(4)^(2−)and HSO_(5)−can regulate the solvation structure of Na^(+)and be adsorbed more preferentially on the evaporation surface than Cl^(−),thus hindering the de-solvation of the solvated Na^(+)and subsequent nucleation/growth of ***,the heat generated by the solar-thermal energy conversion can accelerate the reaction kinetics and enhance the catalytic degradation *** work provides a flow-bed water purification system with an asymmetric solar-thermal and catalytic membrane for synergistic solar thermal desalination of seawater/brine and catalytic degradation of organic pollutants.

关键词： Solar steam generation Seawater desalination Catalytic degradation Bacterial cellulose Cobalt hydroxycarbonate nanorods