检索结果-南通市图书馆

Antibody-dependent cellular cytotoxicity response to SARS-CoV-2 in COVID-19 patients

signal Transduction and Targeted Therapy 2021年第10期6卷 3132-3141页

作者： Yuanling Yu Meiyu Wang Xiaoai Zhang Shufen Li Qingbin Lu Haolong Zeng Hongyan Hou Hao Li Mengyi Zhang Fei Jiang Jiajing Wu Ruxia Ding Zehua Zhou Min Liu weixue si Tao Zhu Hangwen Li Jie Ma Yuanyuan Gu Guangbiao She Xiaokun Li Yulan Zhang Ke Peng Weijin Huang Wei Liu Youchun Wang Division of HIV/AIDS and Sex-transmitted Virus Vaccines Institute for Biological Product ControlNational Institutes for Food and Drug Control(NIFDC)BeijingChina Graduate School of Peking Union Medical College Chinese Academy of Medical SciencesPeking Union Medical CollegeBeijingChina State Key Laboratory of Pathogen and Biosecurity Beijing Institute of Microbiology and EpidemiologyBeijingChina State Key Laboratory of Virology Wuhan Institute of VirologyChinese Academy of SciencesWuhanHubeiChina Department of Laboratorial Science and Technology School of Public HealthPeking UniversityBeijingChina Department of Laboratory Medicine Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina sinovac Biotech Co. LtdBeijingChina Cansino Biotech Incorporation TianjinChina Stemirna Therapeutics LtdShanghaiChina Anhui Zhifeilongcom Biopharmaceutical Co. LtdHefeiChina University of Chinese Academy of Sciences BeijingChina

Antibody-dependent cellular cytotoxicity(ADCC)responses to viral infection are a form of antibody regulated immune responses mediated through the Fc *** severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)triggered ADCC responses contributes to COVID-19 disease development is currently not well *** understand the potential correlation between ADCC responses and COVID-19 disease development,we analyzed the ADCC activity and neutralizing antibody response in 255 individuals ranging from asymptomatic to fatal infections over 1 year post *** was elicited by 10 days post-infection,peaked by 11-20 days,and remained detectable until 400 days *** general,patients with severe disease had higher ADCC ***,patients who had severe disease and recovered had higher ADCC activities than patients who had severe disease and ***,ADCC activities were mediated by a diversity of epitopes in SARS-COV-2-infected mice and induced to comparable levels against SARS-CoV-2 variants of concern(VOCs)(B.1.1.7,B.1.351,and P.1)as that against the D614G mutant in human patients and vaccinated *** study indicates anti-SARS-CoV-2 ADCC as a major trait of COVID-19 patients with various conditions,which can be applied to estimate the extra-neutralization level against COVID-19,especially lethal COVID-19.

关键词： patients ADCC Antibody

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

铝佐剂类型及吸附率对吸附无细胞百白破联合疫苗免疫原性的影响

引用

免疫学杂志 2015年第7期31卷 580-584页

作者：韩露朱涛邵忠琦司伟雪天津科技大学生物工程学院 300457 天津康希诺生物技术有限公司 300457

目的研究铝佐剂类型及吸附能力对吸附无细胞百白破联合疫苗免疫原性的影响,筛选最佳佐剂。方法用磷酸铝(AP)、不同浓度磷酸盐处理的氢氧化铝(PTAH)以及氢氧化铝(AH)佐剂吸附百白破抗原,检测不同佐剂对各抗原的吸附率。制备不同佐剂类型... 详细信息

目的研究铝佐剂类型及吸附能力对吸附无细胞百白破联合疫苗免疫原性的影响,筛选最佳佐剂。方法用磷酸铝(AP)、不同浓度磷酸盐处理的氢氧化铝(PTAH)以及氢氧化铝(AH)佐剂吸附百白破抗原,检测不同佐剂对各抗原的吸附率。制备不同佐剂类型和吸附率的制剂,腹腔免疫NIH小鼠,ELISA法测定免疫后各组小鼠血清抗体滴度。结果百日咳丝状血凝素(FHA)在所有佐剂中吸附率≥95%,百日咳类毒素(PT)、百日咳溶血素(PRN)、精制白喉类毒素(DT)和破伤风类毒素(TT)则随着铝佐剂中磷酸根增多吸附率降低。动物实验产生PT抗体水平大小关系:AP/AH>PTAH/无佐剂组;产生FHA抗体水平大小关系:AP/PTAH-3/AH>PTAH-2/PTAH-3>无佐剂组;产生PRN抗体水平大小关系:PTAH/AP/AH>无佐剂组;产生DT抗体水平大小关系:AP>PTAH>AH>无佐剂组;产生TT抗体水平大小关系:PTAH>AH/AP/无佐剂组。结论铝佐剂吸附力不影响抗原(DT除外)免疫原性,磷酸铝更适合作吸附无细胞百白破联合疫苗的佐剂。

关键词：铝佐剂百白破疫苗吸附率免疫原性

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Unraveling brain aging through the lens of oral microbiota

引用

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

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Challenges in the management of visual and tactile hallucinations in elderly people

引用

World Journal of Psychiatry 2025年第1期15卷 185-188页

作者： si-Sheng Huang Division of Geriatric Psychiatry Department of PsychiatryChanghua Christian HospitalChanghua 500Taiwan Department of Post-Baccalaureate Medicine College of MedicineNational Chung Hsing UniversityTaichung 402Taiwan

This letter provides a concise review of the pertinent literature on visual and tactile hallucinations in elderly *** discussion addresses differential diagnoses and potential underlying mechanisms,as well as the psychopathology associated with tactile hallucinations,and emphasizes the necessity for invest-igation into the possibility of coexisting delusional infestation(parasitosis).These symptoms frequently manifest in patients with primary psychotic disorders,organic mental disorders,and substance use *** proposed pathophy-siological mechanisms may involve dopaminergic imbalances and dysfunction of the striatal dopamine transporter.

关键词： Delusional infestation Dementia Haptic hallucination Scratching behavior Tactile hallucination Visual hallucination Alzheimer’s disease

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

High Fe‑Loading single‑Atom Catalyst Boosts ROS Production by Density Effect for Efficient Antibacterial Therapy

引用

Nano-Micro Letters 2025年第2期17卷 187-203页

作者： si Chen Fang Huang Lijie Mao Zhimin Zhang Han Lin Qixin Yan Xiangyu Lu Jianlin Shi Department of Cardiology Shanghai Tenth People’s HospitalSchool of MedicineTongji UniversityShanghai 200092People’s Republic of China Shanghai Institute of Ceramics Chinese Academy of SciencesShanghai 200050People’s Republic of China Shanghai Frontiers Science Center of Nanocatalytic Medicine School of MedicineTongji UniversityShanghai 200092People’s Republic of China

The current single-atom catalysts(SACs)for medicine still suffer from the limited active site ***,we develop a synthetic method capable of increasing both the metal loading and mass-specific activity of SACs by exchanging zinc with *** constructed iron SACs(h^(3)-FNC)with a high metal loading of 6.27 wt%and an optimized adjacent Fe distance of~4 A exhibit excellent oxidase-like catalytic performance without significant activity decay after being stored for six months and promising antibacterial ***,a“density effect”has been found at a high-enough metal doping amount,at which individual active sites become close enough to interact with each other and alter the electronic structure,resulting in significantly boosted intrinsic activity of single-atomic iron sites in h^(3)-FNCs by 2.3 times compared to low-and medium-loading ***,the overall catalytic activity of h^(3)-FNC is highly improved,with mass activity and metal mass-specific activity that are,respectively,66 and 315 times higher than those of commercial Pt/*** addition,h^(3)-FNCs demonstrate efficiently enhanced capability in catalyzing oxygen reduction into superoxide anion(O_(2)·^(−))and glutathione(GSH)*** in vitro and in vivo assays demonstrate the superior antibacterial efficacy of h^(3)-FNCs in promoting wound *** work presents an intriguing activity-enhancement effect in catalysts and exhibits impressive therapeutic efficacy in combating bacterial infections.

关键词： Nanocatalytic medicine single-atom catalysts Reactive oxygen species(ROS) High metal loading Oxidase catalysis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

NOX4 exacerbates Parkinson's disease pathology by promoting neuronal ferroptosis and neuroinflammation

引用

Neural Regeneration Research 2025年第7期20卷 2038-2052页

作者： Zhihao Lin Changzhou Ying Xiaoli si Naijia Xue Yi Liu Ran Zheng Ying Chen Jiali Pu Baorong Zhang Department of Neurology The Second Affiliated HospitalZhejiang University School of MedicineHangzhouZhejiang ProvinceChina

Parkinson's disease is primarily caused by the loss of dopaminergic neurons in the substantia nigra ***,a novel form of regulated cell death characterized by iron accumulation and lipid peroxidation,plays a vital role in the death of dopaminergic ***,the molecular mechanisms underlying ferroptosis in dopaminergic neurons have not yet been completely *** oxidase 4 is related to oxidative stress,however,whether it regulates dopaminergic neuronal ferroptosis remains *** aim of this study was to determine whether NADPH oxidase 4 is involved in dopaminergic neuronal ferroptosis,and if so,by what *** found that the transcriptional regulator activating transcription factor 3 increased NADPH oxidase 4 expression in dopaminergic neurons and astrocytes in an 1-methyl-4-phenyl-1,2,3,6 tetrahydropyridine-induced Parkinson's disease *** oxidase 4 inhibition improved the behavioral impairments observed in the Parkinson's disease model animals and reduced the death of dopaminergic ***,NADPH oxidase 4 inhibition reduced lipid peroxidation and iron accumulation in the substantia nigra of the Parkinson's disease model ***,we found that NADPH oxidase 4 interacted with activated protein kinase Cαto prevent ferroptosis of dopaminergic ***,by lowering the astrocytic lipocalin-2 expression,NADPH oxidase 4 inhibition reduced 1-methyl-4-phenyl-1,2,3,6 tetrahydropyridine-induced *** findings demonstrate that NADPH oxidase 4 promotes ferroptosis of dopaminergic neurons and neuroinflammation,which contribute to dopaminergic neuron death,suggesting that NADPH oxidase 4 is a possible therapeutic target for Parkinson's disease.

关键词： dopaminergic neuron ferroptosis NADPH oxidase 4(NOX4) neuroinflammation Parkinson's disease

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

百日咳毒素兔多克隆抗体的制备及其ELISA定量检测方法的建立和验证

引用

中国生物制品学杂志 2024年第3期37卷 350-355页

作者：宋欣然张茗婧伊丽男彭少丹王帆张国强司伟雪朱涛天津科技大学生物工程学院天津300457 康希诺生物股份公司天津300301

目的制备百日咳毒素(pertussis toxin,PT)兔多克隆抗体(简称多抗),建立定量检测PT抗原含量的双抗体夹心ELISA法,并进行验证及应用。方法采用传统方法,用PT免疫青紫蓝兔制备PT兔多抗。优化ELISA系统反应条件,建立PT双抗体夹心ELISA定量... 详细信息

目的制备百日咳毒素(pertussis toxin,PT)兔多克隆抗体(简称多抗),建立定量检测PT抗原含量的双抗体夹心ELISA法,并进行验证及应用。方法采用传统方法,用PT免疫青紫蓝兔制备PT兔多抗。优化ELISA系统反应条件,建立PT双抗体夹心ELISA定量检测方法,并进行特异性、线性、准确性、精密性、灵敏度验证。采用建立的方法对脱毒过程样品及其他百日咳抗原纯化过程样品菌毛蛋白(fimbriae proteins,FIM)原液中PT抗原含量进行检测。结果PT抗原含量双抗体夹心ELISA检测方法的工作条件为PT兔多抗包被浓度为1μg/mL,酶标抗体稀释度为1∶8000。此检测系统能与PT纯化蛋白发生特异性反应,而与百日咳丝状血凝素、白喉类毒素、破伤风类毒素均未发生交叉反应;建立的双抗体夹心ELISA法线性检测范围在25~400 ng/mL之间;PT高、中、低浓度回收率分别为103.27%、91.48%、103.52%;酶标板内和板间的变异系数(CV)均小于10%;该方法的灵敏度为20.719 ng/mL,检测下限为41.438 ng/mL。检测5种不同脱毒工艺条件下、不同取样时间点的35批样品,其抗原含量变化均符合脱毒反应变化趋势。结论成功制备了PT兔多抗,并建立了精密性和准确性良好的定量检测PT抗原含量的双抗体夹心ELISA法,可用于组分百白破联合疫苗生产过程中化学脱毒样品的抗原含量检测。

关键词：百日咳毒素多克隆抗体酶联免疫吸附试验

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

科学数据伦理治理:政策框架与路径——以英国为例

引用

现代情报 2025年第1期45卷 112-123,134页

作者：刘先瑞司莉武汉大学信息管理学院湖北武汉430072

[目的/意义]完善科学数据伦理治理有助于规范科学数据收集、共享和使用,发挥数据作为科研的关键资源与要素的功能,优化科学数据管理服务。[方法/过程]本研究基于扎根理论分析英国科学数据伦理政策,总结其政策框架与内容,并通过矩阵编码... 详细信息

[目的/意义]完善科学数据伦理治理有助于规范科学数据收集、共享和使用,发挥数据作为科研的关键资源与要素的功能,优化科学数据管理服务。[方法/过程]本研究基于扎根理论分析英国科学数据伦理政策,总结其政策框架与内容,并通过矩阵编码与社会网络分析方法揭示治理特征,提出我国优化科学数据伦理治理的建议。[结果/结论]研究发现,伦理政策框架包括治理环境、主体与策略3层面。伦理治理环境内容分为适用领域、适用主体、概念定义、问题分析与现有政策;伦理治理主体内容涉及治理主体界定与促进主体协作;伦理治理策略内容涵盖治理指导与各阶段治理措施。其治理特征有3维度:注重定义概念,明确分配主体权责与促进协作,全面厘定治理策略与加强伦理风险防控。据此提出4条治理路径:形成治理体系,规范治理理论,明确各方权责与协作方式,细化各阶段治理措施。

关键词：科学数据数据伦理数据治理政策分析英国

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nanotribological properties and scratch resistance of MoS_(2)bilayerona siO_(2)/si substrate

引用

Friction 2023年第1期11卷 154-164页

作者： si-hwan KIM Hyo-sok AHN Department of Transdisciplinary Studies Seoul National UniversitySeoul 08826Republic of Korea Department of Manufacturing Systems and Design Engineering Seoul National University of Science and TechnologySeoul 08826 Republic of Korea

The tribological properties and scratch resistance of MoS_(2)bilayer deposited on siO_(2)/si substrates prepared via chemical vapor deposition are *** force microscopy(FFM)is employed to investigate the friction and wear properties of the MoS_(2)bilayer at the nanoscale by applying a normal load ranging from 200 to 1,000 *** resistance is measured using the scratch mode in FFM based on a linearly increasing load from 100 to 1,000 *** probe force microscopy(KPFM)is performed to locally measure the surface potential in the tested surface to qualitatively measure the wear/removal of Mos,layers and identify critical loads associated with the individual failures of the top and bottom *** analysis of the contact potential difference values as well as that of KPFM,friction,and height images show that the wear/removal of the top and bottom layers in the MoS_(2)bilayer system occurred *** FFM and KPFM results show that the top MoS_(2)layer begins to degrade at the end of the low friction stage,followed by the bottom layer,thereby resulting in a transitional friction stage owing to the direct contact between the diamond tip and siO_(2)*** the stable third stage,the transfer of lubricious MoS_(2)debris to the tip apex results in contact between the MoS_(2)-transferred tip and siO_(2).Nanoscratch test results show two ranges of critical loads,which correspond to the sequential removal of the top and bottom layers.

关键词： chemical vapor deposition(CVD)-grown MoS,bilayer friction force microscopy(FFM) nanoscratch test Kelvin probe force microscopy(KPFM) scratch resistance

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Wear Resistance of Austenitic Steel Fe–17Mn–6si–0.3C with High silicon and High Manganese

引用

Acta Metallurgica sinica(English Letters) 2014年第2期27卷 352-358页

作者： Haitao si Renlong Xiong Fan Song Yuhua Wen Huabei Peng School of Manufacturing Science and Engineering Sichuan University

To solve the problem of poor wear resistance in conventional Hadfield steels under medium and low stress, a new kind of steel with high silicon and high manganese Fe-17Mn-6si-0.3C was designed and its wear resistance was studied. The results showed that it exhibited better wear resistance than conventional Hadfield steel in both dry friction and abrasive friction. The better wear resistance of the new steel with high silicon and high manganese resulted from the stressinduced γ→ε martensitic transformation.

关键词： High manganese steel Fe-Mn based alloys Wear resistance Martensitic transformation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：