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General anesthetic agents induce neurotoxicity through oligodendrocytes in the developing brain 被引量:1
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作者 Wen-Xin Hang Yan-Chang Yang +7 位作者 Yu-Han Hu Fu-Quan Fang Lang Wang Xing-Hua Qian Patrick M.McQuillan Hui Xiong Jian-Hang Leng Zhi-Yong Hu 《Zoological Research》 SCIE CSCD 2024年第3期691-703,共13页
General anesthetic agents can impact brain function through interactions with neurons and their effects on glial cells.Oligodendrocytes perform essential roles in the central nervous system,including myelin sheath for... General anesthetic agents can impact brain function through interactions with neurons and their effects on glial cells.Oligodendrocytes perform essential roles in the central nervous system,including myelin sheath formation,axonal metabolism,and neuroplasticity regulation.They are particularly vulnerable to the effects of general anesthetic agents resulting in impaired proliferation,differentiation,and apoptosis.Neurologists are increasingly interested in the effects of general anesthetic agents on oligodendrocytes.These agents not only act on the surface receptors of oligodendrocytes to elicit neuroinflammation through modulation of signaling pathways,but also disrupt metabolic processes and alter the expression of genes involved in oligodendrocyte development and function.In this review,we summarize the effects of general anesthetic agents on oligodendrocytes.We anticipate that future research will continue to explore these effects and develop strategies to decrease the incidence of adverse reactions associated with the use of general anesthetic agents. 展开更多
关键词 OLIGODENDROCYTES General anesthetic agents NEUROTOXICITY Central nervous system Perioperative neurocognitive disorders
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General anesthetic agents induce neurotoxicity through astrocytes 被引量:1
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作者 Yanchang Yang Tiantian Liu +8 位作者 Jun Li Dandan Yan Yuhan Hu Pin Wu Fuquan Fang Patrick M.McQuillan Wenxin Hang Jianhang Leng Zhiyong Hu 《Neural Regeneration Research》 SCIE CAS CSCD 2024年第6期1299-1307,共9页
Neuroscientists have recognized the importance of astrocytes in regulating neurological function and their influence on the release of glial transmitters.Few studies,however,have focused on the effects of general anes... Neuroscientists have recognized the importance of astrocytes in regulating neurological function and their influence on the release of glial transmitters.Few studies,however,have focused on the effects of general anesthetic agents on neuroglia or astrocytes.Astrocytes can also be an important target of general anesthetic agents as they exert not only sedative,analgesic,and amnesic effects but also mediate general anesthetic-induced neurotoxicity and postoperative cognitive dysfunction.Here,we analyzed recent advances in understanding the mechanism of general anesthetic agents on astrocytes,and found that exposure to general anesthetic agents will destroy the morphology and proliferation of astrocytes,in addition to acting on the receptors on their surface,which not only affect Ca^(2+)signaling,inhibit the release of brain-derived neurotrophic factor and lactate from astrocytes,but are even involved in the regulation of the pro-and anti-inflammatory processes of astrocytes.These would obviously affect the communication between astrocytes as well as between astrocytes and neighboring neurons,other neuroglia,and vascular cells.In this review,we summarize how general anesthetic agents act on neurons via astrocytes,and explore potential mechanisms of action of general anesthetic agents on the nervous system.We hope that this review will provide a new direction for mitigating the neurotoxicity of general anesthetic agents. 展开更多
关键词 ASTROCYTES brain-derived neurotrophic factor general anesthetic agents neuron NEUROTOXICITY N-methyl-D-aspartate receptor perioperative neurocognition Toll-like receptor γ-aminobutyric acid receptor
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Improvement Mechanism of Adhesion Performance of Anti-stripping Agents and Coupling Agents on Asphalt-Aggregate Interface Based on Molecular Dynamics
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作者 SONG Jing XIE Jianguang DAI Zexinyu 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI CSCD 2024年第S01期111-120,共10页
This study examined the mechanisms for improving the adhesion performance of the asphalt-aggregate interface with two anti-stripping agents and two coupling agents.The investigation of contact behavior between various... This study examined the mechanisms for improving the adhesion performance of the asphalt-aggregate interface with two anti-stripping agents and two coupling agents.The investigation of contact behavior between various asphalt-aggregate surfaces was conducted using molecular dynamics(MD)simulations.The interaction energy and the relative concentration distribution were employed as the parameters to analyze the enhancement mechanisms of anti-stripping agents and coupling agents on the asphalt-aggregate interface.Results indicated that the adhesion at the asphalt-aggregate interface could be strengthened by both anti-stripping agents and coupling agents.Anti-stripping agents primarily improve adhesion through the reinforcement of electrostatic attraction,while coupling agents primarily upgrade adhesion by strengthening the van der Waals.Hence,the molecular dynamics modeling and calculation techniques presented in this study can be utilized to elucidate the development mechanism of the asphalt-aggregate interface through the use of anti-stripping agents and coupling agents. 展开更多
关键词 asphalt-aggregate interface adhesion performance anti-stripping agents coupling agents molecular dynamics
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Progress in the Use of Glucocorticoids and Biological Agents in Non-Infectious Uveitis
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作者 Yuxuan Liu Xunyu Zou +1 位作者 Shizhou Cheng Zuhai Zhang 《Journal of Biosciences and Medicines》 2024年第2期138-155,共18页
One of the main immune-mediated diseases that lead to avoidable blindness is non-infectious uveitis. Glucocorticoids are the first-line therapy choice for noninfectious uveitis;however, biologics are also showing prom... One of the main immune-mediated diseases that lead to avoidable blindness is non-infectious uveitis. Glucocorticoids are the first-line therapy choice for noninfectious uveitis;however, biologics are also showing promise in the management of this condition. The description of glucocorticoid and biologic usage in non-infectious uveitis is the main topic of this paper. 展开更多
关键词 Non-Infectious Uveitis GLUCOCORTICOIDS Biological agents
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Near-Infrared Fluorescence Imaging Contrast Agents for Clinical Research: Limitations and Alternatives
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作者 Serigne Moussa Badiane Elhadji A. L. Bathily +1 位作者 Fawrou Seye Louis A.D. Diouf 《Open Journal of Biophysics》 2024年第1期73-77,共5页
Introduction: Near-infrared fluorescence imaging is a technique that will establish itself in the short term at the international level because it is recognized for its potential to improve the performance of surgical... Introduction: Near-infrared fluorescence imaging is a technique that will establish itself in the short term at the international level because it is recognized for its potential to improve the performance of surgical interventions, its moderate investment and operating costs and its portability. Although the technology is now mature, there is currently the problem of the availability of contrast agents to be injected IV. The aim of this methodology article is to propose an alternative solution to the need for contrast agents for clinical research, particularly in oncology. Methodology: They consist of coupling a fluorescent marker in the form of an NHS derivative, such as IR DYE manufactured in compliance with GMP, with therapeutic monoclonal antibodies having marketing authorization for molecular imaging. For a given antibody, the marking procedure must be the subject of a validation file on the final preparation filtered on a sterilizing membrane at 0.22 μm. Once the procedure has been validated, it would be unnecessary to repeat the tests before each clinical research examination. A check of the marking by thin-layer chromatography (TLC) and place it in a sample bank at +4˚C for 1 month of each injected formulation would be sufficient for additional tests if necessary. Conclusion: Molecular near-infrared fluorescence imaging is experiencing development, the process of which could be accelerated by greater availability of clinical contrast agents. Alternative solutions are therefore necessary to promote clinical research in this area. These methods must be shared to make it easier for researchers. 展开更多
关键词 Fluorescence Imaging Contrast agents Clinical Research
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Can soil remediation agents synergistically mitigate rice Cd content and CH_(4)emission from karst paddies?
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作者 Wangbiao Lu Guangneng Zeng +8 位作者 Weijun Luo Jiangju Song Maofei Ni Shuangqin Guo Qi Zhang Chengling Huang Cheng Yang Haijun Du Shijie Wang 《Acta Geochimica》 EI CAS CSCD 2024年第6期1123-1132,共10页
Rice(Oryza sativa L.)paddies are increasingly threatened by cadmium(Cd)pollution,and potentially serve as CH_(4)emitters to the atmosphere.Remediation agents widely mitigate Cd pollution in paddy soil,however,we know ... Rice(Oryza sativa L.)paddies are increasingly threatened by cadmium(Cd)pollution,and potentially serve as CH_(4)emitters to the atmosphere.Remediation agents widely mitigate Cd pollution in paddy soil,however,we know little about their regulations on CH_(4)emission.Here,via adding biochar(B),sulfhydryl-modified palygorskite(SMP),and selenium foliar fertilizer(SFF),we conducted a pot experiment to investigate soil and rice Cd contents together with in-situ CH_(4)f luxes.Compared to CK,the addition of SMP,SFF,and B-SMP reduced Cd in brown rice by 25%to 50%,25%,and 50%to 75%,respectively.Agents 7%B,7%B-0.01%SMP,and SFF reduced CH_(4)emissions by 8.46%,5.30%,and 4.11%,respectively.CH_(4)emission increased gradually along the growing season,with the cumulative CH_(4)fluxes ranging between 338.82 and 619.13 kg hm^(-2).Our results highlight that mixed 7%B-0.01%SMP and SFF showed collaborative eff ects on Cd remediation and CH_(4)emission.This study reveals the feasibility of reducing Cd pollution and CH_(4)emission in karst rice paddies,which hopes to supplement the knowledge of collaborative controls on soil remediation and carbon emission. 展开更多
关键词 Cd content CH_4 FLUX Remediation agents Synergistical effect Rice paddy
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Effects of virtual agents on interaction efficiency and environmental immersion in MR environments
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作者 Yihua BAO Jie GUO +2 位作者 Dongdong WENG Yue LIU Zeyu TIAN 《虚拟现实与智能硬件(中英文)》 EI 2024年第2期169-179,共11页
Background Physical entity interactions in mixed reality(MR)environments aim to harness human capabilities in manipulating physical objects,thereby enhancing virtual environment(VEs)functionality.In MR,a common strate... Background Physical entity interactions in mixed reality(MR)environments aim to harness human capabilities in manipulating physical objects,thereby enhancing virtual environment(VEs)functionality.In MR,a common strategy is to use virtual agents as substitutes for physical entities,balancing interaction efficiency with environmental immersion.However,the impact of virtual agent size and form on interaction performance remains unclear.Methods Two experiments were conducted to explore how virtual agent size and form affect interaction performance,immersion,and preference in MR environments.The first experiment assessed five virtual agent sizes(25%,50%,75%,100%,and 125%of physical size).The second experiment tested four types of frames(no frame,consistent frame,half frame,and surrounding frame)across all agent sizes.Participants,utilizing a head mounted display,performed tasks involving moving cups,typing words,and using a mouse.They completed questionnaires assessing aspects such as the virtual environment effects,interaction effects,collision concerns,and preferences.Results Results from the first experiment revealed that agents matching physical object size produced the best overall performance.The second experiment demonstrated that consistent framing notably enhances interaction accuracy and speed but reduces immersion.To balance efficiency and immersion,frameless agents matching physical object sizes were deemed optimal.Conclusions Virtual agents matching physical entity sizes enhance user experience and interaction performance.Conversely,familiar frames from 2D interfaces detrimentally affect interaction and immersion in virtual spaces.This study provides valuable insights for the future development of MR systems. 展开更多
关键词 Mixed reality Virtual agents Interaction performance Environmental immersion Virtual environments
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Travel Agents Around the World Praising the Trip to China
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作者 Tian Xin 《China & The World Cultural Exchange》 2024年第8期6-9,共4页
Foreign tourists'trips to China recently reached a new height,both online and offline.Travel agents around the world also made trips to China,generating more thoughts for the development of new routes and the desi... Foreign tourists'trips to China recently reached a new height,both online and offline.Travel agents around the world also made trips to China,generating more thoughts for the development of new routes and the design of innovative tourist products,and contributing to the development of China's inbound tourism. 展开更多
关键词 TRIPS GENERATING agents
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Effectiveness of Chromated Copper Arsenate against Deteriorating Agents of Eucalyptus Poles and Posts in Four Eco-Regions in Kenya
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作者 Miriam Gathogo Evanson Omuse George Muthike 《Open Journal of Forestry》 2024年第3期281-296,共16页
Previous studies done elsewhere have shown that Eucalyptus poles treated with chromated copper arsenate (CCA) can last over 30 years. Kenya is exceptional because in some eco-regions, the Eucalyptus poles’ life span ... Previous studies done elsewhere have shown that Eucalyptus poles treated with chromated copper arsenate (CCA) can last over 30 years. Kenya is exceptional because in some eco-regions, the Eucalyptus poles’ life span has greatly reduced to 5 years. The current study was designed to evaluate wood deteriorating agents of CCA-treated Eucalyptus poles and variability in four eco-regions of Kenya, namely, dryland, coastal, highland and humid lake. A total of 360 Eucalyptus pole samples were used for this experiment. Three CCA treatments were used to treat transmission poles at 20 kg/cm3 fencing posts samples at 6 kg/cm3, and a control group. Results indicated that termites and wood-decay fungi attacks caused wood deterioration in the four eco-regions. The proportion of power transmission pole degradation by wood deteriorating agents varied across eco-regions, between treatments and control and between time after treatments. Dryland eco-regions had the highest termite-related degradation (41.82%) while wood-decay fungi attack was highest in the highland eco-regions (9.20%). Samples treated with 6 kg/cm3 recorded the lowest level of wood deterioration, manifested by minimal superficial termite and wood-decay fungi attack. Samples treated with 20 kg/cm3 were characterized by moderate termite and wood-decay fungi attacks observed around the heartwood region, unlike sapwood. This study concluded that the deterioration of Eucalyptus CCA-treated poles is a question of climatic variability and hence, to increase the poles’ lifespan, CCA treatment should be tailored according to the characteristics of the ecoregion of use. Further investigations will inform the diversity of termites and decay-fungi across different eco-regions. 展开更多
关键词 Wood Deteriorating agents CCA Transmission Poles Wood-Decay Fungi
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Effects of Water-retaining Agents on Growth, Development, Yield and Quality of Soybean under Drought Stress
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作者 Hui XIA Yan ZHANG +2 位作者 Yun HAN Shasha HU Hengbin ZHANG 《Plant Diseases and Pests》 2024年第3期34-39,共6页
[Objectives]The paper was to explore the effects of different doses of water-retaining agent on the growth and development indicators,yield and quality of soybean plants subjected to drought stress.[Methods]The effect... [Objectives]The paper was to explore the effects of different doses of water-retaining agent on the growth and development indicators,yield and quality of soybean plants subjected to drought stress.[Methods]The effects of drought stress(MDS)and drought stress with low(MDS-L),medium(MDS-M)and high doses(MDS-H)of the water-retaining agent on the growth and development indicators,root activity,MDA content,antioxidant enzyme activity,yield and quality of soybean were studied by field plot test,with the normal water supply serving as the control(CK).[Results]In response to drought stress,the plant height,stem diameter,and yield of soybean exhibited a notable decline.Additionally,the contents of protein,fat,linoleic acid,and linolenic acid in seeds demonstrated a significant reduction.Conversely,the root activity and antioxidant enzyme activity exhibited a noticeable decline,while the MDA content exhibited an increase.The application of varying doses of the water-retaining agent was found to significantly enhance soybean growth,stimulate root activity,and elevate antioxidant enzyme activity,while concurrently reducing MDA content.The observed effects were found to be dose-dependent,with the greatest effects observed at the highest dose.In comparison to MDS,the yields of soybean in the MDS-L,MDS-M,and MDS-H treatments exhibited a 18.38%,25.58%,and 46.26%increase,respectively.Additionally,the content of protein,fat,linoleic acid,and linolenic acid in seeds demonstrated a notable enhancement.[Conclusions]The application of the water-retaining agent has been demonstrated to significantly promote the growth of soybean plants under conditions of drought stress,resulting in an improvement in both the yield and the quality of the soybean crop.The recommended dosage of the water-retaining agent is 3.3 kg/667 m 2. 展开更多
关键词 SOYBEAN Water-retaining agent YIELD Quality Growth and development Antioxidant enzyme activity
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Optimizing Grey Wolf Optimization: A Novel Agents’ Positions Updating Technique for Enhanced Efficiency and Performance
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作者 Mahmoud Khatab Mohamed El-Gamel +2 位作者 Ahmed I. Saleh Asmaa H. Rabie Atallah El-Shenawy 《Open Journal of Optimization》 2024年第1期21-30,共10页
Grey Wolf Optimization (GWO) is a nature-inspired metaheuristic algorithm that has gained popularity for solving optimization problems. In GWO, the success of the algorithm heavily relies on the efficient updating of ... Grey Wolf Optimization (GWO) is a nature-inspired metaheuristic algorithm that has gained popularity for solving optimization problems. In GWO, the success of the algorithm heavily relies on the efficient updating of the agents’ positions relative to the leader wolves. In this paper, we provide a brief overview of the Grey Wolf Optimization technique and its significance in solving complex optimization problems. Building upon the foundation of GWO, we introduce a novel technique for updating agents’ positions, which aims to enhance the algorithm’s effectiveness and efficiency. To evaluate the performance of our proposed approach, we conduct comprehensive experiments and compare the results with the original Grey Wolf Optimization technique. Our comparative analysis demonstrates that the proposed technique achieves superior optimization outcomes. These findings underscore the potential of our approach in addressing optimization challenges effectively and efficiently, making it a valuable contribution to the field of optimization algorithms. 展开更多
关键词 Grey Wolf Optimization (GWO) Metaheuristic Algorithm Optimization Problems agents Positions Leader Wolves Optimal Fitness Values Optimization Challenges
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Factors Influencing Compliance with Safe Handling Requirements of Anticancer Agents by Nurses in a Tertiary Hospital-A Secondary Publication
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作者 Seul Gi Lee So-Young Choi 《Journal of Clinical and Nursing Research》 2024年第1期196-208,共13页
Purpose:This research aimed to identify leading factors that affect nurses’compliance with the safe handling of anticancer agents.Methods:Data were collected from 114 nurses working in the university hospital and wer... Purpose:This research aimed to identify leading factors that affect nurses’compliance with the safe handling of anticancer agents.Methods:Data were collected from 114 nurses working in the university hospital and were analyzed through independent t-test,one-way ANOVA,Pearson’s correlation coefficient,and multiple regression analysis using SPSS25.0.Results:The average level of compliance with the safe handling of anticancer agents was 3.73±0.33 out of 5 points.Workplace safety culture(β=0.40,P<0.001)and knowledge of safe handling(β=0.18,P=0.030)had significant influences on nurses’compliance with the safe handling of anticancer agents.The explained variance for compliance was 28.3%.Conclusion:To enhance the implementation of safety management for anticancer agents,each institution should strive to support human and material resources and enhance specialization in the workplace safety culture through system improvement.Based on the results of this study,we suggest research for the development of a training program for anticancer agent safety management. 展开更多
关键词 Anticancer agents COMPLIANCE Knowledge NURSE Safety
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Anti-Cancer Agents Associated Diarrhea:Current Status and Prospects
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作者 Hao Wang Zhansheng Jiang Zhongsheng Tong 《Proceedings of Anticancer Research》 2024年第1期23-36,共14页
Cancer stands as one of the major threats to human life.Ensuring the safety of drugs is paramount,and the impact of adverse reactions on patients’quality of life and prognosis should not be underestimated.Diarrhea is... Cancer stands as one of the major threats to human life.Ensuring the safety of drugs is paramount,and the impact of adverse reactions on patients’quality of life and prognosis should not be underestimated.Diarrhea is a common clinical adverse event,and despite the absence of specific anti-diarrhea drugs,there is a pressing need for improvement.This article aims to provide a valuable reference for researchers in clinical drug use and scientific tumor treatment.It summarizes recent advancements in drug mechanisms and adverse reactions,whether in preclinical research or clinical diagnosis and therapy. 展开更多
关键词 DIARRHEA Anti-cancer agent Adverse reaction CANCER TREATMENT
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Geo-Agents研究 被引量:9
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作者 罗英伟 汪小林 +2 位作者 丛升日 许卓群 陆钟辉 《计算机研究与发展》 EI CSCD 北大核心 2000年第12期1504-1512,共9页
Agent技术为全面准确了解分布式系统的特点及解决分布式应用问题提供了一种全新的方法 .论文在分析了分布式地理信息系统的特点及所面临的问题后 ,提出了一个基于 Agent的分布式地理信息系统模型 Geo-Agents.在这个模型里 ,首先分析了 G... Agent技术为全面准确了解分布式系统的特点及解决分布式应用问题提供了一种全新的方法 .论文在分析了分布式地理信息系统的特点及所面临的问题后 ,提出了一个基于 Agent的分布式地理信息系统模型 Geo-Agents.在这个模型里 ,首先分析了 GIS Agent的分类、特点及结构 ,将 GIS Agent分为 3种类型 :系统管理 Agent、GIS功能 Agent和接口 Agent,每个 GIS Agent都是一个由控制子系统、功能子系统、通信接口、人机界面及数据资源组成的有机实体 ,具有独立性、确定性、自主性、交互性和主动性等特点 ;其次 ,采用消息机制实现不同 GIS Agent之间的合作与交互 ,并结合 GIS应用的特点及 Agent的功能 ,设计了一组特定的 Geo- Agents消息 ;最后 ,给出了Geo- Agents模型的体系结构及网络分布模型 ,并基于 Agent设计了一个面向用户任务的人格化的二次开发语言Geo Script.与此同时 ,还设计了一个基于网络的多层空间元数据库框架 ,为 GIS Agent的能力提供了保证 .实践表明 ,Geo- Agents除了具有分布式 GIS的基本特点外 ,而且能够很好地实现分布式地理空间数据的智能服务、超越Client/ Server结构的分散对等分布计算以及 GIS领域中的合作等 ,是一个具有广阔发展前景的分布式 展开更多
关键词 GIS agent 分布式系统 模型 geo-agents
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Geo-Agents系统中的负载控制策略 被引量:4
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作者 罗英伟 汪小林 许卓群 《计算机辅助设计与图形学学报》 EI CSCD 北大核心 2003年第6期755-759,共5页
Geo Agents是一个基于Agent的分布式GIS系统 首先分析Geo Agents系统中的负载问题 :主机负载和网络负载 主机负载指的是运行在该主机上的Agent数目 ;而网络负载则由Agent之间的通信和地理空间数据的传输组成 主机负载和网络负载是相互... Geo Agents是一个基于Agent的分布式GIS系统 首先分析Geo Agents系统中的负载问题 :主机负载和网络负载 主机负载指的是运行在该主机上的Agent数目 ;而网络负载则由Agent之间的通信和地理空间数据的传输组成 主机负载和网络负载是相互关联的 在Geo Agents系统中 ,由于地理空间数据的数据量非常巨大 ,因此减少网络负载是首位的问题 ,只有在网络负载一致时才考虑均衡主机负载 针对Geo Agents系统中负载情况 ,给出了两个负载控制策略 :Agent调度策略和对等主机策略 ,并对Geo 展开更多
关键词 geo-agents系统 GIS 主机负载 网络负载 地理信息系统
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基于网络药理学与GEO差异基因芯片数据探讨芦丁治疗脊髓损伤的作用机制
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作者 周亚净 段春胜 +3 位作者 何润之 程芳 吴黎莉 刘建敏 《天津师范大学学报(自然科学版)》 CAS 北大核心 2024年第3期19-27,共9页
为了探究芦丁治疗脊髓损伤的作用机制,基于网络药理学和GEO差异基因芯片数据分析,结合体内实验,筛选芦丁对脊髓损伤的作用靶点.首先通过TCMSP、Swiss Target Prediction和SuperPred数据库获得芦丁的作用靶点,同时采用GEO差异基因、CTD、... 为了探究芦丁治疗脊髓损伤的作用机制,基于网络药理学和GEO差异基因芯片数据分析,结合体内实验,筛选芦丁对脊髓损伤的作用靶点.首先通过TCMSP、Swiss Target Prediction和SuperPred数据库获得芦丁的作用靶点,同时采用GEO差异基因、CTD、OMIM、PharmGkb疾病数据库获取脊髓损伤的疾病靶点;然后应用Cytoscape软件采用蛋白互作的方式筛选芦丁治疗脊髓损伤的核心靶点,并采用R语言对核心靶点进行GO功能及KEGG通路富集分析;最后采用Rutgers MASCIS脊髓损伤撞击器建立大鼠急性脊髓损伤模型,芦丁干预3 d后采用BBB运动评分法对大鼠后肢运动功能进行评价,采用酶联免疫吸附测定法检测脊髓中炎症因子TNF-α、IL-6、IL-1β和NF-κB的表达水平以及ROS和MDA含量.结果发现:(1)芦丁共有56个对应的蛋白靶点,脊髓损伤筛选到4 624个疾病靶点,合并后得到5个核心靶点,即CASP3、ESR1、GSK3B、IL-6、MTOR;(2) GO功能主要集中在对氧化应激的反应、活性氧代谢过程、NF-κB结合等,KEGG通路分析显示,芦丁治疗脊髓损伤相关的通路包括PI3K-Akt信号通路、AMPK信号通路、HIF-1信号通路等;(3)分子对接实验和分子动力学模拟表明,芦丁与5个核心靶点均有良好且稳定的结合;(4)体内实验结果显示,脊髓损伤后使用芦丁进行药物干预处理可以降低脊髓的含水量,减少炎性因子和氧化应激因子的产生.上述结果证实,芦丁可以通过多个靶点以及多条通路在治疗脊髓损伤中发挥抗炎和抗氧化作用. 展开更多
关键词 网络药理学 geo差异基因芯片 芦丁 脊髓损伤 分子对接 体内实验
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基于Agent人工智能的异构网络多重覆盖节点入侵检测系统设计 被引量:1
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作者 顾正祥 《计算机测量与控制》 2024年第5期17-23,30,共8页
异构网络具有结构复杂、多重覆盖面积大等特征,使得网络入侵检测较为隐蔽,威胁网络运行的安全性;为此,对基于Agent人工智能的异构网络多重覆盖节点入侵检测系统进行了研究;通过检测Agent和通信Agent装设主机Agent,以Cisco Stealthwatch... 异构网络具有结构复杂、多重覆盖面积大等特征,使得网络入侵检测较为隐蔽,威胁网络运行的安全性;为此,对基于Agent人工智能的异构网络多重覆盖节点入侵检测系统进行了研究;通过检测Agent和通信Agent装设主机Agent,以Cisco Stealthwatch流量传感器作为异构网络传感器检测攻击行为,采用STM32L151RDT664位微控制器传输批量数据,由MAX3232芯片实现系统电平转化,实现硬件系统设计;软件部分设计入侵检测标准,采用传感器设备捕获网络实时数据,通过Agent技术解析异构网络协议并提取数据运行特征,综合考虑协议解析结果及与检测标准匹配度,实现异构网络多重覆盖节点入侵检测;经实验测试表明,基于Agent人工智能的异构网络多重覆盖节点入侵检测系统入侵行为的漏检率和入侵类型误检率的平均值仅为6%和5%,能够有效提高检测精度,减小检测误差。 展开更多
关键词 agent人工智能 异构网络 多重覆盖网络 入侵检测系统
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基于GEO数据库分析脓毒症相关性死亡的潜在差异表达基因和微小RNAs
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作者 吕卓辰 罗士元 +2 位作者 童尧 周瑶 王颖 《临床麻醉学杂志》 CAS CSCD 北大核心 2024年第11期1184-1191,共8页
目的基于基因表达数据库(GEO)运用生物信息学筛选与脓毒症相关性死亡相关的潜在差异表达基因和微小RNAs(miRNAs)。方法从GEO数据库下载人类血液样本基因表达谱芯片数据集GSE48080和GSE54514,选择两个时点(诊断脓毒症时、脓毒症病程中),... 目的基于基因表达数据库(GEO)运用生物信息学筛选与脓毒症相关性死亡相关的潜在差异表达基因和微小RNAs(miRNAs)。方法从GEO数据库下载人类血液样本基因表达谱芯片数据集GSE48080和GSE54514,选择两个时点(诊断脓毒症时、脓毒症病程中),使用GEO2R在线工具对脓毒症存活患者和非存活患者进行差异表达基因(DEGs)筛选。通过基因本体(GO)分析和京都基因与基因组百科全书(KEGG)通路富集分析,研究脓毒症相关性死亡DEGs涉及的病理生理过程和潜在信号通路。使用STRING在线工具构建DEGs蛋白-蛋白相互作用(PPI),使用Cytoscape软件构建PPI网络拓扑,使用CytoHubba工具筛选枢纽(Hub)基因。使用NetworkAnalyst构建Hub基因的目标miRNAs,使用RT-qPCR验证本院脓毒症存活患者和非存活患者相关基因表达变化。结果在脓毒症病程中,脓毒症存活患者和非存活患者基因表达呈现异质性,共筛选出15个DEGs。KEGG通路富集分析显示,金黄色葡萄球菌感染、NOD样受体信号通路、硫代谢和集管酸分泌四个途径存在显著富集。PPI和CytoHubba分析筛选出10个Hub基因(SLC4A1、EPB42、LTF、LCN2、DEFA4、HBM、HBG1、GMPR、CAMP、OLFM4)。NetworkAnalyst分析预测了10个关键miRNAs。RT-qPCR验证结果显示,5个Hub基因(SLC4A1、EPB42、LCN2、DEFA4、OLFM4)与上述分析中的趋势一致。结论基于GEO数据库的生物信息学分析,脓毒症存活患者和非存活患者在脓毒症病程中存在差异表达基因,为探索脓毒症相关性死亡的生物标志物提供了数据支持。 展开更多
关键词 geo数据库 脓毒症相关性死亡 差异表达基因 微小RNAS
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基于GEO数据库联合网络药理学研究川芎-赤芍药对治疗动脉粥样硬化的药理过程及分子机制
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作者 陈启庭 林洪 +4 位作者 陈利捷 卓超林 岳双冰 金宇 张淼 《中国医院用药评价与分析》 2024年第6期655-661,共7页
目的:探讨活血化瘀中药药对川芎-赤芍拮抗动脉粥样硬化的潜在分子机制及药理过程。方法:使用R语言Limma包分析GEO数据库GSE43292数据集,对有表达差异的动脉粥样硬化基因进行筛选和提取。川芎-赤芍药对所含的化学活性组分及靶点通过中药... 目的:探讨活血化瘀中药药对川芎-赤芍拮抗动脉粥样硬化的潜在分子机制及药理过程。方法:使用R语言Limma包分析GEO数据库GSE43292数据集,对有表达差异的动脉粥样硬化基因进行筛选和提取。川芎-赤芍药对所含的化学活性组分及靶点通过中药系统药理学数据库与分析平台检索。合并差异基因和药物作用靶点以获得共同的靶点。利用在线分析工具STRING和Cytoscape构建药物和靶点的调控网络以及靶点间的蛋白质-蛋白质相互作用(PPI)网络。然后利用R语言注释靶点基因的基因本体(GO)功能,分析京都基因与基因组百科全书(KEGG)通路,再进行基因集富集分析(GSEA)以验证KEGG的通路和富集的情况,确定靶点基因的调控功能和参与基因调控功能的信号转导通道。结果:共筛选出动脉粥样硬化差异基因1244个,川芎-赤芍药对含36个生物活性成分,其中靶点为环加氧酶1、肾上腺素受体、过氧化物酶体增殖物激活受体-γ、激酶插入域受体、孕激素受体、基质金属蛋白酶9、CXC趋化因子配体8、蛋白激酶Cβ、白细胞介素6、CD14、二肽基肽酶-4、PIK3CG、肾上腺素受体α1B、微管相关蛋白2、尿激酶纤溶酶原激活剂和单胺氧化酶B。靶点在GO中主要富集在合成DNA过程的调控、DNA生物合成的过程、含胶原的细胞外基质、细胞外基质、蛋白酶结合、细胞迁移、血管形成过程、膜筏结构、转录的调节等与动脉粥样硬化炎症、脂肪代谢及血管生成相关的生物学注释。脂质与动脉粥样硬化通路和核因子κB信号通路与动脉粥样硬化关系最为密切,并且在KEGG信号通路和GSEA均显示出富集。结论:川芎-赤芍药对通过潜在的13个活性成分作用于可能的16个靶点调控相关信号转导通路,通过抗炎、调脂和保护血管等方式产生抗动脉粥样硬化的作用。 展开更多
关键词 川芎-赤芍药对 动脉粥样硬化 geo数据库联合网络药理学 信号通路
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Geo-Agents系统中的合作与并行分析
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作者 罗英伟 高朝华 +1 位作者 汪小林 许卓群 《计算机科学》 CSCD 北大核心 2002年第10期25-27,共3页
1前言 Geo-Agents是一个基于Agent的分布式GIS原型系统(如图1所示)[1].系统由Facilitator、接口Agent、GIS功能A-gent和GuServer等四种GIS Agent组成.其中,Facilitator是系统管理Agent,主要承担全局管理和协调功能;GIS功能A-gent对分布... 1前言 Geo-Agents是一个基于Agent的分布式GIS原型系统(如图1所示)[1].系统由Facilitator、接口Agent、GIS功能A-gent和GuServer等四种GIS Agent组成.其中,Facilitator是系统管理Agent,主要承担全局管理和协调功能;GIS功能A-gent对分布式GIS系统中的空间分析或查询功能进行封装,具有响应外界请求,完成不同数据要求的同一类空间分析或查询功能,并可以利用Agent间的统一通信机制返回查询结果;接口Agent是用来与用户交互、完成用户指定任务的,是一种可以表现一定智能的Agent:它们接受用户空间分析及查询任务,进行任务分解,利用Agent2的统一通信机制交由GIS功能Agent完成,并利用GIS功能Agent返回的结果完成用户指定的计算,返回最终结果;GuServer是地理空间效据访问服务器,它管理空间数据库中存放的地理空间数据以及相关的元数据. 展开更多
关键词 空间数据库 分布式地理信息系统 geo-agents系统 合作 并行分析
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