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Wireless electrical stimulation generated by piezoelectric nanomaterial promotes the dental pulp regeneration via regulating mitochondrial Ca^(2+)/PKA signaling pathway

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Journal of Materials Science & Technology 2024年第1期168卷 24-34页

作者： Jianmao Zheng Jiyuan Zuo Cairong Xiao Qining Guo Xiaobin Fu Chengyun Ning peng yu Guangdong Provincial Key Laboratory of Stomatology Hospital of StomatologySun Yat-Sen UniversityGuangzhou 510080China School of Materials Science and Engineering National Engineering Research Center for Tissue Restoration and ReconstructionSouth China University of TechnologyGuangzhou 510641China

The induction of dental pulp stem cells(DPSCs)into odontogenic differentiation is a cutting-edge method of dental pulp regeneration ***,it remains a challenge to develop biomaterials and ther-apies that can induce odontogenic ***,we propose a wireless electrical stimulation strat-egy to induce DPSCs odontogenic differentiation via K_(0.5)Na_(0.5)NbO_(3)piezoelectric nanoparticles(KNN)and polarized KNN(PKNN),which can be endocytosed by *** vitro,several odontogenic differentiation indexes were also increased in DPSCs treated with KNN and PKNN,and the increase was more obvious in the PKNN *** wireless electrical field promoted mitochondrial calcium concentration via mitochondrial calcium unidirectional transporter(MCU),increased the production of adenosine triphos-phate(ATP),and induced odontogenic differentiation through the activation of the cAMP-PKA signaling *** vivo,dental pulp-like tissue was induced by electrical stimulation wirelessly with KNN and PKNN,which was more clinically friendly compared with the wired device,and the induction was more obvious in the PKNN group consistent with in vitro *** conclusion,this work demonstrates the potential of PKNN as an effective stimulus that can induce odontogenic differentiation of DPSCs and be applied to dental pulp regeneration treatment.

关键词： Piezoelectric nanoparticles Dental pulp stem cells Odontogenic differentiation

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段木黑木耳与代料黑木耳产品质构分析与营养评价

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中国食用菌 2019年第3期38卷 50-56,60页

作者：彭裕红雅安职业技术学院四川雅安625000

采用段木和代料栽培的方式,对同一黑木耳菌株进行栽培,获得2个段木黑木耳和1个代料黑木耳样品,对其营养成分和质构进行了分析和比较。结果表明,随着样品泡发时间的延长,在感官弹性、硬度和咀嚼性方面均呈现逐渐下降趋势,但段木黑木耳的... 详细信息

采用段木和代料栽培的方式,对同一黑木耳菌株进行栽培,获得2个段木黑木耳和1个代料黑木耳样品,对其营养成分和质构进行了分析和比较。结果表明,随着样品泡发时间的延长,在感官弹性、硬度和咀嚼性方面均呈现逐渐下降趋势,但段木黑木耳的稳定性显著均优于代料黑木耳。以FAO/WHO推荐的全鸡蛋蛋白为标准,用模糊识别法的评价方法进行评价,结果表明,样品的蛋白贴近度分别为0.4554、0.4519和0.4875,3个样品间差异不大;氨基酸比值系数法分析结果证实,3个样品的第一限制氨基酸均为蛋氨酸+胱氨酸,2个段木黑木耳样品的SRC值分别为77.42、75.6,较代料黑木耳SRC值72.1更接近100,具有较高的营养价值;2个段木黑木耳的多糖含量分别是代料黑木耳的1.58倍和1.29倍;供试样品中脂肪、VB_1和灰分含量段木黑木耳高于代料黑木耳,VB_2的含量则代料高于段木。3个样品均含有丰富的微量元素,重金属含量均低于国家标准。研究结果还显示,栽培方式不同对产品品质和营养价值均有显著影响,段木黑木耳和代料黑木耳的营养价值和质构具有较大的差异,段木木耳可能具有更高的营养价值。

关键词：感官弹性咀嚼性硬度模糊识别法氨基酸比值系数法

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Modulation of d-orbital to realize enriched electronic cobalt sites in cobalt sulfide for enhanced hydrogen evolution in electrocatalytic water/seawater splitting

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Rare Metals 2024年第2期43卷 511-521页

作者： Jian-peng Sun yu Zheng Zi-Sheng Zhang Xiang-Chao Meng Zi-Zhen Li Key Laboratory of Marine Chemistry Theory and Technology(Ministry of Education) College of Chemistry and Chemical EngineeringOcean University of ChinaQingdao266100China Shanxi Institute of Energy Taiyuan030600China Department of Chemical and Biological Engineering Faculty of EngineeringUniversity of OttawaOttawaONK1N6 N5Canada

Herein,a novel single-atomic Pt doping and interface-rich CoS/Co(OH)_(2)(Pt-CoS/Co(OH)_(2)/C)electrocatalyst has been successfully *** from precise regulation of d-orbital electronic structure modulation on Co site,Pt-CoS/Co(OH)_(2)/C exhibited remarkable HER activity and high stability for hydrogen evolution in splitting both water(73 mV@10 mA·cm^(−2)) and seawater(87 mV@10 mA·cm^(−2)).Notably,atomic Pt doping was introduced into CoS/Co(OH)_(2),which could produce local unbalanced Coulombic force and significantly increased the number of S vacancies,and then expose abundant Co ***,Co(OH)_(2) in Pt-CoS/Co(OH)_(2)/C could act as the adsorption sites for H_(2)O in hydrogen evolution reaction *** functional theory results also proved that atomic Pt doping,S vacancies and Co(OH)_(2) coupling could result in the formation of enriched electronic Co sites and optimize d_(z2) orbital electronic structure,and then realize the depth upward shift of d-band center and enhance the adsorption of H*on Co sites.

关键词： Electrocatalysts Hydrogen evolution reaction Pt-CoS/Co(OH)_(2) d-band center Electronic structure Water/seawater electrolysis

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Analysis of destructive effect of Zn on carbon brick and way of Zn into carbon brick

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Journal of Iron and Steel Research International 2024年第6期31卷 1344-1354页

作者： peng-bo Liu Shu-sen Cheng yu-qing Xue Xiao-man Cheng Zhao Liu University of Science and Technology Beijing Beijing 100083China Ministry of Ironmaking Shangdong Taishan Steel Group Co.Ltd.Taian 271000ShandongChina

The service life of a blast furnace depends largely on the degree of damage to the carbon brick in the *** brick and ramming material in the hearth of a 1780 m3 blast furnace after shutdown were sampled and *** was found that the substances in the cracks of the carbon brick near and above the taphole were ZnO and Zn_(2)SiO_(4),whereas the substances in the cracks of the carbon brick below the taphole were *** reaction of Zn with CO,SiO_(2),and Fes generates ZnO,Zn_(2)SiO_(4),and ZnS,resulting in volume expansion,which is an important reason for the cracking of carbon ***,several obvious Zn vapor flow channels were found in the ramming material,through which Zn vapor could enter the carbon brick,causing damage to the carbon *** the compactness of the ramming material is beneficial to preventing Zn vapor from entering the carbon brick through the voids in the ramming material,reducing the destructive effect of Zn on the carbon brick and further extending the service life of the blast furnace.

关键词： Zn Blast furnace Carbon brick Ramming material Crack

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SHR-A1811(antibody-drug conjugate)in advanced HER2-mutant non-small cell lung cancer:a multicenter,open-label,phase 1/2 study

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Signal Transduction and Targeted Therapy 2024年第8期9卷 3483-3492页

作者： Ziming Li Zhengbo Song Wei hong Nong Yang Yongsheng Wang hong Jian Zibin Liang Sheng Hu Min peng Yan yu Yan Wang Zicong Jiao Kaijing Zhao Ke Song You Li Wei Shi Shun Lu Shanghai Lung Cancer Center Shanghai Chest HospitalShanghai Jiaotong University School of MedicineShanghai 200030China Phase I Clinical Trial Ward Zhejiang Cancer HospitalHangzhou 310000China Department of Thoracic Oncology Zhejiang Cancer HospitalHangzhou 310000China Department of Lung&Gastrointestinal Oncology Hunan Cancer HospitalChangsha 410031China Thoracic Oncology Ward/Cancer Center West China Hospital of Sichuan UniversityChengdu 610041China Department of Thoracic Oncology The Fifth Affiliated Hospital of Sun Yat-Sen UniversityZhuhai 51900China Department of Medical Oncology Hubei Cancer HospitalWuhan 43000China Department of Oncology Renmin Hospital of Wuhan UniversityWuhan 430200China Department of Thoracic Medicine Harbin Medical University Cancer HospitalHarbin 150081China Department of Medical Oncology Cancer HospitalChinese Academy of Medical SciencesBeijing 100021China Geneplus-Beijing CoLtd.Beijing 102206China Jiangsu Hengrui Pharmaceuticals Co.Ltd.Shanghai 200120China

A dose-escalation and expansion,phase 1/2 study(***,NCT04818333)was conducted to assess the novel antibodydrug conjugate SHR-A1811 in pretreated HER2-altered advanced non-small cell lung cancer(NSCLC).Here,we report results from the phase 1 *** who had previously failed or were intolerant to platinum-based chemotherapy were enrolled and received SHR-A1811 intravenously at doses of 3.2 to 8.0 mg/kg every 3 *** escalation followed a Bayesian logistic regression model that included overdose control,with subsequent selection of tolerable levels for dose ***,63 patients were enrolled,including 43 receiving a recommended dose for expansion of 4.8 mg/*** patients had HER2-mutant ***-limiting toxicity occurred in one patient in the 8.0 mg/kg dose ***≥3 treatment-related adverse events occurred in 29(46.0%)*** patient in the 6.4 mg/kg cohort died due to interstitial lung *** of April 11,2023,the 4.8 mg/kg cohort showed an objective response rate of 41.9%(95%Cl 27.0-57.9),and a disease control rate of 95.3%(95%Cl 84.2-99.4).The median duration of response was 13.7 months,with 13 of 18 responses *** median progression-free survival was 8.4 months(95%CI 7.1-15.0).SHR-A1811 demonstrated favourable safety and clinically meaningful efficacy in pretreated advanced HER2-mutantNSCLC.

关键词： SHR HER2 doses

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Comparative Study on the Immunogenicity and Efficacy of Different Post-exposure Intramuscular Rabies Vaccination Regimens in China

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Biomedical and Environmental Sciences 2024年第2期37卷 178-186页

作者： SONG yun HE Ying LU Xue Xin ZHANG Xiao Mei JIANG XIAO Lin SONG Qing HUANG Xue Yong MA hong Xia yu peng Cheng ZHU Wu Yang Henan Provincial Center for Disease Control and Prevention Infectious Disease Prevention and Control InstituteHenan Provincial Key Laboratory of Infectious Disease PathogensZhengzhou 450000HenanChina National Institute for Viral Disease Control and Prevention China CDCKey Laboratory of BiosafetyNational Health CommissionBeijing 102206China Shandong Provincial Center for Disease Control and Prevention Jinan 250014ShandongChina Qingdao Chengyang District Center for Disease Control and Prevention Qingdao 266108ShandongChina

Objective This study aimed to compare the current Essen rabies post-exposure immunization schedule(0-3-7-14-28)in China and the simple 4-dose schedule(0-3-7-14)newly recommended by the World Health Organization in terms of their safety,efficacy,and *** Mice were vaccinated according to different immunization schedules,and blood was collected for detection of rabies virus neutralizing antibodies(RVNAs)on days 14,21,28,35,and 120after the first ***,different groups of mice were injected with lethal doses of the CVS-11 virus on day 0,subjected to different rabies immunization schedules,and assessed for morbidity and death *** a clinical trial,185 rabies-exposed individuals were selected for post-exposure vaccination according to the Essen schedule,and blood was collected for RVNAs detection on days 28and 42 after the first *** A statistically significant difference in RVNAs between mice in the Essen and 0-3-7-14 schedule groups was observed on the 35th day(P0.05)in RVNAs levels at any time *** post-exposure immune protective test showed that the survival rate of mice in the control group was 20%,whereas that in the immunization groups was 40%.In the clinical trial,the RVNAs positive conversion rates on days 28(14 days after 4 doses)and 42(14 days after 5 doses)were both 100%,and no significant difference in RVNAs levels was observed(P>0.05).Conclusion The simple 4-dose schedule can produce sufficient RVNAs levels,with no significant effect of a delayed fourth vaccine dose(14–28 d)on the immunization potential.

关键词： Rabies Post-exposure immunization Essen regimen RVNAs

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Spatial diversion and coordination of flood water for an urban flood control project in Suzhou, China

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Water Science and Engineering 2024年第2期17卷 108-117页

作者： yu Xu You-peng Xu Qiang Wang yue-feng Wang Chao Gao Department of Geography and Spatial Information Techniques Ningbo UniversityNingbo 315211China State Key Laboratoryof Hydology Water Resources and Hydraulic Enginering Nanjing Hydraulic Research InstitueNanjing 210029China Laboratory of Sustainable Urban Drainage Ningbo UniversityNingbo 31521lChina Schol of Gegraphical and Oceanographic Sciences Nanjing UniversiyNanjing 210023China School of Geography and Tourism Chongqing Normal UniversityChongqing 401331China

Suzhou City,located in the Yangtze River Delta in China,is prone to flooding due to a complex combination of natural factors,including its monsoon climate,low elevation,and tidally influenced position,as well as intensive human *** Large Encirclement Flood Control Project(LEFCP)was launched to cope with serious floods in the urban *** project changed the spatiotemporal pattern of flood processes and caused spatial diversion of floods from the urban area to the outskirts of the ***,this study developed a distributed flood simulation model in order to understand this transition of flood *** results revealed that the LEFCP effectively protected the urban areas from floods,but the present scheduling schemes resulted in the spatial diversion of floods to the outskirts of the *** rainstorm frequencies of 10.0%to 0.5%,the water level differences between two representative water level stations(Miduqiao(MDQ)and Fengqiao(FQ))located inside and outside the LEFCP area,ranged from 0.75 m to 0.24 m and from 1.80 m to 1.58 m,*** addition,the flood safety margin at MDQ and the duration with the water level exceeding the warning water level at FQ ranged from 0.95 m to 0.43 m and from 4 h to 22 h,*** scheduling schemes for the hydraulic facilities of the LEFCP in extreme precipitation cases were developed ac-cording to food simulations under seven scheduling *** helps to regulate the spatial flood diversion caused by the LEFCP during extreme precipitation.

关键词： Urban flooding Urban flood control project Rainstorm fregue ncy Flood simulation model Suzhou City

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Strigolactones modulate cotton fiber elongation and secondary cell wall thickening

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Journal of Integrative Agriculture 2024年第6期23卷 1850-1863页

作者： yunze Wen peng He Xiaohan Bai Huizhi Zhang yunfeng Zhang Jianing yu College of Life Sciences Shaanxi Normal UniversityXi’an 710119China

Cotton is one of the most important economic crops in the world,and it is a major source of fiber in the textile ***(SLs)are a class of carotenoid-derived plant hormones involved in many processes of plant growth and development,although the functions of SL in fiber development remain largely ***,we found that the endogenous SLs were significantly higher in fibers at 20 days post-anthesis(DPA).Exogenous SLs significantly increased fiber length and cell wall ***,we cloned three key SL biosynthetic genes,namely GhD27,GhMAX3,and GhMAX4,which were highly expressed in fibers,and subcellular localization analyses revealed that GhD27,GhMAX3,and GhMAX4 were localized in the *** exogenous expression of GhD27,GhMAX3,and GhMAX4 complemented the physiological phenotypes of d27,max3,and max4 mutations in Arabidopsis,*** of GhD27,GhMAX3,and GhMAX4 in cotton resulted in increased numbers of axillary buds and leaves,reduced fiber length,and significantly reduced fiber *** findings revealed that SLs participate in plant growth,fiber elongation,and secondary cell wall formation in *** results provide new and effective genetic resources for improving cotton fiber yield and plant architecture.

关键词： strigolactones fiber elongation secondary cell wall thickening cotton

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High-chromium vanadium-titanium magnetite all-pellet integrated burden optimization and softening-melting behavior based on flux pellets

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International Journal of Minerals,Metallurgy and Materials 2024年第3期31卷 498-507页

作者： Bojian Chen Tao Jiang Jing Wen Guangdong Yang Tangxia yu Fengxiang Zhu peng Hu School of Metallurgy Northeastern UniversityShenyang 110819China Key Laboratory for Ecological Metallurgy of Multimetallic Mineral(Ministry of Education) Northeastern UniversityShenyang 110819China Liaoning Key Laboratory for Metallurgical Sensor and Technology Shenyang 110819China State key laboratory of vanadium and titanium resources comprehensive utilization Panzhihua 617000China

High-chromium vanadium-titanium magnetite(HVTM)is a crucial polymetallic-associated resource to be *** allpellet operation is a blast furnace trend that aims to reduce carbon dioxide emissions in the *** referencing the production data of vanadium-titanium magnetite blast furnaces,this study explored the softening-melting behavior of high-chromium vanadium-titanium magnetite and obtained the optimal integrated burden based on flux *** results show that the burden with a composition of 70wt%flux pellets and 30wt%acid pellets exhibits the best softening-melting *** comparison to that of the single burden,the softening-melting characteristic temperature of this burden composition was *** melting interval first increased from 307 to 362℃and then decreased to 282℃.The maximum pressure drop(ΔPmax)decreased from 26.76 to 19.01 *** permeability index(S)dropped from 4643.5 to 2446.8 kPa·℃.The softening-melting properties of the integrated burden were apparently *** acid pellets played a role in withstanding load during the softening *** flux pellets in the integrated burden exhibited a higher slag melting point,which increased the melting temperature during the melting *** slag homogeneity and the TiC produced by over-reduction led to the gas permeability deterioration of the single *** segregation of the flux and acid pellets in the HVTM proportion and basicity mainly led to the better softening-melting properties of the integrated burden.

关键词： high-chromium vanadium-titanium magnetite softening-melting properties all pellets integrated burden flux pellets

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Recent advances in zwitterionic nanoscale drug delivery systems to overcome biological barriers

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Asian Journal of Pharmaceutical Sciences 2024年第1期19卷 49-68页

作者： Xumei Ouyang yu Liu Ke Zheng Zhiqing Pang Shaojun peng Zhuhai Institute of Translational Medicine Zhuhai Precision Medical CenterZhuhai People’s Hospital(Zhuhai Hospital Affiliated with Jinan University)Zhuhai 519000China Key Laboratory of Smart Drug Delivery Ministry of EducationDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai 201203China School of Materials Science and Engineering Dongguan University of TechnologyDongguan 523808China

Nanoscale drug delivery systems(nDDS)have been employed widely in enhancing the therapeutic efficacy of drugs against diseases with reduced side *** several nDDS have been successfully approved for clinical use up to now,biological barriers between the administration site and the target site hinder the wider clinical adoption of nDDS in disease *** glycol(PEG)-modification(or PEGylation)has been regarded as the gold standard for stabilising nDDS in complex biological ***,the accelerated blood clearance(ABC)of PEGylated nDDS after repeated injections becomes great challenges for their clinical *** polymer,a novel family of antifouling materials,have evolved as an alternative to PEG due to their super-hydrophilicity and *** nDDS could avoid the generation of ABC phenomenon and exhibit longer blood circulation time than the PEGylated *** impressively,zwitterionic nDDS have recently been shown to overcome multiple biological barriers such as nonspecific organ distribution,pressure gradients,impermeable cell membranes and lysosomal degradation without the need of any complex chemical *** realization of overcoming multiple biological barriers by zwitterionic nDDS may simplify the current overly complex design of nDDS,which could facilitate their better clinical ***,we summarise the recent progress of zwitterionic nDDS at overcoming various biological barriers and analyse their ***,prospects and challenges are introduced to guide the rational design of zwitterionic nDDS for disease treatment.

关键词： Zwitterionic polymer Nano drug delivery system Biological barrier Targeting delivery Disease treatment

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