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Fabrication of Electrospun PVDF Nanofibers with Higher Content of Polar β Phase and Smaller Diameter by Adding a Small Amount of Dioctadecyl Dimethyl Ammonium Chloride
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作者 wei xue cong lv +2 位作者 yao jing 陈枫 傅强 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2017年第8期992-1000,共9页
In this work,the effect of dioctadecyl dimethyl ammonium chloride(DDAC,a kind of alkyl ammonium salt) on polar β phase content and the diameter of electrospun PVDF nanofibers was investigated for the first time.Our... In this work,the effect of dioctadecyl dimethyl ammonium chloride(DDAC,a kind of alkyl ammonium salt) on polar β phase content and the diameter of electrospun PVDF nanofibers was investigated for the first time.Our experimental results show that the diameter of the electrospun PVDF nanofiber could be largely reduced and the content of polar β phase also become dominant immediately by just adding a little amount of DDAC.When the mass fraction of DDAC reached 4%,the content of polar β phase increased by about 39.1% compared with PVDF nanofibers without DDAC.Besides,the crystallinity of PVDF nanofibers also increased with the addition of DDAC.Based on the results,the possible mechanism of cooperative effect between electrospinning and DDAC on fiber diameter and formation of β phase in PVDF was discussed. 展开更多
关键词 Diameter crystalline crystallinity polar cooperative adding Polar ammonium alkyl attributed
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Cellular manufacturing layout on adding/removing machines 被引量:1
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作者 马汉武 张登凡 杨相 《Journal of Southeast University(English Edition)》 EI CAS 2010年第3期484-488,共5页
In order to rapidly respond to the complex and mutational market, a new facility layout plan based on cellular manufacturing is proposed, which gives consideration to high efficiency and flexibility. The plan designs ... In order to rapidly respond to the complex and mutational market, a new facility layout plan based on cellular manufacturing is proposed, which gives consideration to high efficiency and flexibility. The plan designs two phases of integrated cell layout, i.e., cell construction and cell system layout, on the condition of adding/removing machines. First, in view of the costs of logics and machine-relocation, the cell construction based on the alternative processing routes and intra-cell layout are integrated as a whole, which achieves cell formation, process planning and the intra-cell layout in a single step. Secondly, an approach of a continuous optimized multi-line layout for solving the cell system layout problem is proposed, which eliminates the coupling relationship from the machine-relocation and realizes an integrated design of the two phases of the cell layout. An application based on real factory data is optimally solved by the Matlab 7.0 software to validate and verify the models. 展开更多
关键词 cell layout adding/removing machine genetic algorithm
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多模态MRI在轻度认知障碍研究中的应用
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作者 张函夕 李欣璐 +5 位作者 杨明 尚庆庆 褚炳源 李伟庆 冯泽(综述) 王丰(审校) 《临床放射学杂志》 北大核心 2026年第1期193-197,共5页
轻度认知障碍(mild cognitive impairment,MCI)是认知能力减弱的早期阶段,这种减弱介于正常衰老和痴呆症之间[1]。MCI患者表现为超出了正常老化的记忆衰退或认知功能受损,但同时他们的日常生活能力依然保持在可接受的水平[2]。鉴于MCI... 轻度认知障碍(mild cognitive impairment,MCI)是认知能力减弱的早期阶段,这种减弱介于正常衰老和痴呆症之间[1]。MCI患者表现为超出了正常老化的记忆衰退或认知功能受损,但同时他们的日常生活能力依然保持在可接受的水平[2]。鉴于MCI患者向阿尔茨海默病(Alzheimer’s disease,AD)转化的高风险,早期识别和实施干预措施对于延缓或阻断病情进展具有至关重要的意义。多模态MRI技术的实施得益于其融合了多种成像方式,涵盖了结构性磁共振成像(structural magnetic resonance imaging,sMRI)、功能性磁共振成像(functional magnetic resonance imaging,fMRI)、扩散张量成像(diffusion tensor imaging,DTI)和磁共振波谱(magnetic resonance spectroscopy,MRS)等多种技术。 展开更多
关键词 MCI 轻度认知障碍 阿尔茨海默病 AD
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基于ZYNQ 7020与AD 9361的Sub-6 GHz全频段数字预失真器硬件实现与验证
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作者 史炳峰 许高明 《数据通信》 2026年第1期8-13,共6页
数字预失真(Digital Pre-Distortion,DPD)是一种在无线通信系统中广泛应用的信号处理技术,主要用于补偿功率放大器的非线性失真,以提升通信系统的信号质量和频谱效率。本文依托ZYNQ 7020 SoC芯片及AD 9361射频收发芯片,闭环实现了基于... 数字预失真(Digital Pre-Distortion,DPD)是一种在无线通信系统中广泛应用的信号处理技术,主要用于补偿功率放大器的非线性失真,以提升通信系统的信号质量和频谱效率。本文依托ZYNQ 7020 SoC芯片及AD 9361射频收发芯片,闭环实现了基于记忆多项式(Memory Polynomial,MP)模型的数字预失真技术。本文首先完成了硬件原理图设计,并对系统的数字基带通信与射频通信功能进行了验证;其次在ZYNQ 7020的双核上分别开发了用于控制AD 9361的裸机程序,以及功放非线性参数估计模块。实验结果表明,所设计的硬件系统在上电后可自动完成功放非线性参数的估计,而设计的数字预失真器对功放的非线性失真具有明显的改善效果。 展开更多
关键词 ZYNQ 7020 AD 9361 数字预失真器 MP Sub-6 GHz
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琐琐葡萄总黄酮对APP/PS-1双转基因AD小鼠肠道菌群的影响
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作者 再娜甫古丽·买买提 古力夏提·艾力 +1 位作者 张鹏 袁芳 《现代生物医学进展》 2026年第2期161-175,共15页
目的:在前期发现琐琐葡萄总黄酮(Flavones from Vitis vinifera L,VTF)可改善APP/PS-1双转基因(Alzheimer's disease,AD)小鼠认知功能的基础上,进一步验证“VTF是否通过重塑肠道菌群-肠-脑轴而发挥神经保护作用”,并阐明其潜在机制... 目的:在前期发现琐琐葡萄总黄酮(Flavones from Vitis vinifera L,VTF)可改善APP/PS-1双转基因(Alzheimer's disease,AD)小鼠认知功能的基础上,进一步验证“VTF是否通过重塑肠道菌群-肠-脑轴而发挥神经保护作用”,并阐明其潜在机制。方法:本研究将从天然药物琐琐葡萄中提取活性成分总黄酮VTF,作用于APP/PS-1小鼠,VTF灌胃8周,通过Morris水迷宫实验评估小鼠空间学习能力;ELISA检测小鼠脑组织中IL-1β、IL-6、TNF-α因子,血清中5-HT、GABA因子的含量;苏木精-伊红(Hematoxylin and eosin staining,HE)染色法观察结肠组织形态,免疫组化法检测Occludin、Claudin、Zo-1、NLRP3蛋白表达;高通量测序检测小鼠粪便肠道菌群;结果:1)水迷宫实验结果显示:VTF低剂量组平均逃逸潜伏期缩短(P<0.05);VTF低、中剂量组有效区域运动距离,运动时间以及进入次数显著增多(P<0.01);2)结肠组织HE染色结果显示;AD模型小鼠肠粘膜膜层萎缩,隐窝丢失和绒毛断裂,而VTF干预之后小鼠上述情况均有所减轻;3)结肠组织免疫组化结果显示:VTF干预可以上调Occludin、Claudin、Zo-1等紧密连接蛋白阳性表达(P<0.01),减少NLRP3炎症相关蛋白的表达(P<0.01);4)ELISA结果:VTF各剂量组小鼠脑组织中IL-1β、IL-6、TNFα等炎症因子水平降低(P<0.01);VTF各剂量组中5-HT和GABA的含量增多(P<0.01);5)肠道菌群检测结果显示:VTF高剂量干预后的AD小鼠厚壁菌门相对丰度增多(P<0.05),与模型组小鼠相比,VTF中、高剂量组中乳杆菌科(Lactobacillaceae)相对丰度增多,VTF低剂量组中Muribaculaceae相对丰度增多,多奈哌齐组,VTF各剂量组中丹毒科(Erysipelotrichaceae)、瘤胃球菌科(Ruminococcaceae)相对丰度增多;而VTF各剂量组中毛螺菌科(Lachnospiraceae)、螺杆菌科(Helicobacteraceae),脱铁杆菌科(Deferribacteraceae)相对丰度减少。结论:这些结果表明,VTF调节肠道菌群可能具有治疗衰老过程中微生物导致脑轴和认知功能缺陷的潜力,其机制可能与改变肠道菌群组成,修复受损的肠道屏障,炎症反应和神经递质有关。因此,调节肠道微生物群可能是治疗AD相关神经疾病的一种潜在策略。 展开更多
关键词 阿尔茨海默病 肠道菌群 神经炎症 APP/PS-1双转基因AD小鼠
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葡萄糖代谢-神经炎症-氧化应激三角驱动在阿尔茨海默病中的研究进展
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作者 曹华文 姚娜 +2 位作者 刘斌 董晓红 丛树园 《细胞与分子免疫学杂志》 北大核心 2026年第1期77-83,共7页
阿尔茨海默病(AD)病理机制研究长期聚焦于β-淀粉样蛋白(Aβ)沉积与Tau蛋白过度磷酸化。近年代谢组学研究揭示脑能量代谢紊乱在AD早期即已发生。本文系统整合近年来研究成果,提出“代谢-炎症-氧化应激三角驱动”假说,阐明葡萄糖代谢网... 阿尔茨海默病(AD)病理机制研究长期聚焦于β-淀粉样蛋白(Aβ)沉积与Tau蛋白过度磷酸化。近年代谢组学研究揭示脑能量代谢紊乱在AD早期即已发生。本文系统整合近年来研究成果,提出“代谢-炎症-氧化应激三角驱动”假说,阐明葡萄糖代谢网络失调在AD病理中的枢纽作用。研究发现,AD患者存在糖酵解关键酶活性异常、胰岛素信号通路受损及线粒体氧化磷酸化功能障碍,三者通过小胶质细胞代谢重编程、损伤相关分子模式(DAMP)释放及核因子κB/丝裂原活化蛋白激酶(NF-κB/MAPK)通路激活,与神经炎症、氧化应激形成双向正反馈环路,推动Aβ沉积与Tau磷酸化的恶性循环。本文揭示脑代谢紊乱作为AD早期驱动因素的核心地位,强调靶向代谢-炎症-氧化应激交互节点的多靶点治疗策略的突破潜力,为AD的早期干预提供全新理论框架。 展开更多
关键词 神经炎症 阿尔兹海默症(AD) 葡萄糖代谢 氧化应激 综述
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一种基于复合放大的压电陶瓷驱动电源
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作者 冉鑫 梁文彬 +2 位作者 陈章隆 唐青成 巩小亮 《压电与声光》 北大核心 2026年第1期67-73,共7页
压电陶瓷驱动电源提供高精度、高稳定性的电压输出,以实现对压电陶瓷微位移或振动的精确控制。压电陶瓷的位移、振动精度、速度以及重复性受到压电陶瓷驱动电源的动态响应速度、稳定性和线性度等性能影响。本文设计了一种输出电压为-200... 压电陶瓷驱动电源提供高精度、高稳定性的电压输出,以实现对压电陶瓷微位移或振动的精确控制。压电陶瓷的位移、振动精度、速度以及重复性受到压电陶瓷驱动电源的动态响应速度、稳定性和线性度等性能影响。本文设计了一种输出电压为-200~200 V可调的高性能压电陶瓷驱动电源,其包含3个关键模块:基于PA85A的直流高压复合放大电路,基于LTZ1000的超精密电压基准源以及基于AD5791的低噪声高精度信号生成模块。该电源输出电压纹波峰峰值<300μV,-200~200 mV电压阶跃响应时间<12μs,稳定性(10 h)<10×10^(-6),线性度>99.9%。 展开更多
关键词 压电陶瓷驱动电源 直流高压复合放大电路 电压基准源 PA85A LTZ1000 AD5791
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基于旋转机构的前信号灯复用方案
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作者 文娟 徐胜亮 +3 位作者 薛永站 董佑学 晏紫 黄明星 《汽车实用技术》 2026年第1期71-74,共4页
随着新能源汽车行业的迅猛发展,其关键组件之一的前信号灯亦展现出集成化的发展趋势。研究提出了一项创新的前信号灯多功能集成方案,该方案以单一发光二极管(LED)光源结合可旋转多面光学结构,通过霍尔传感与步进电机实现发光面的精准切... 随着新能源汽车行业的迅猛发展,其关键组件之一的前信号灯亦展现出集成化的发展趋势。研究提出了一项创新的前信号灯多功能集成方案,该方案以单一发光二极管(LED)光源结合可旋转多面光学结构,通过霍尔传感与步进电机实现发光面的精准切换,在有限空间内完成多种照明与信号功能的融合。测试结果表明,该结构在低亮与高亮模式下的最大发光强度分别达到123 cd与616 cd。该设计既保持了汽车外观设计的精致性,又有效节约了空间资源,进而显著降低了整车的制造成本。 展开更多
关键词 旋转机构 复用结构 位置灯 ADS灯
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Information Diffusion Models and Fuzzing Algorithms for a Privacy-Aware Data Transmission Scheduling in 6G Heterogeneous ad hoc Networks
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作者 Borja Bordel Sánchez Ramón Alcarria Tomás Robles 《Computer Modeling in Engineering & Sciences》 2026年第2期1214-1234,共21页
In this paper,we propose a new privacy-aware transmission scheduling algorithm for 6G ad hoc networks.This system enables end nodes to select the optimum time and scheme to transmit private data safely.In 6G dynamic h... In this paper,we propose a new privacy-aware transmission scheduling algorithm for 6G ad hoc networks.This system enables end nodes to select the optimum time and scheme to transmit private data safely.In 6G dynamic heterogeneous infrastructures,unstable links and non-uniform hardware capabilities create critical issues regarding security and privacy.Traditional protocols are often too computationally heavy to allow 6G services to achieve their expected Quality-of-Service(QoS).As the transport network is built of ad hoc nodes,there is no guarantee about their trustworthiness or behavior,and transversal functionalities are delegated to the extreme nodes.However,while security can be guaranteed in extreme-to-extreme solutions,privacy cannot,as all intermediate nodes still have to handle the data packets they are transporting.Besides,traditional schemes for private anonymous ad hoc communications are vulnerable against modern intelligent attacks based on learning models.The proposed scheme fulfills this gap.Findings show the probability of a successful intelligent attack reduces by up to 65%compared to ad hoc networks with no privacy protection strategy when used the proposed technology.While congestion probability can remain below 0.001%,as required in 6G services. 展开更多
关键词 6G networks ad hoc networks PRIVACY scheduling algorithms diffusion models fuzzing algorithms
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NLRP3 inflammasome:A link between systemic infection and Alzheimer’s disease
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作者 Tatiana Barichello Felipe Dal-Pizzol 《Neural Regeneration Research》 2026年第6期2321-2322,共2页
Neuroinflammation is a crucial factor in the progression of various diseases,ranging from immune-related conditions such as sepsis to neurodegenerative disorders such as Alzheimer’s disease(AD)(Ravichandran and Henek... Neuroinflammation is a crucial factor in the progression of various diseases,ranging from immune-related conditions such as sepsis to neurodegenerative disorders such as Alzheimer’s disease(AD)(Ravichandran and Heneka,2024).This perspective article,which draws on insights from diverse fields including neuroscience,immunology,and pathology,p rovides a critical analysis of ongoing research efforts in inflammasome biology,with specific emphasis on Nod-like receptor(NLR)and pyrin domain-containing protein 3(NLRP3). 展开更多
关键词 NEUROINFLAMMATION systemic infection INFLAMMASOME Alzheimers disease neurodegenerative disorders NLRP alzheimer s disease ad ravichandran
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高龄老人肾功能不全与认知障碍相关性分析
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作者 沈燕 黎红华 张英杰 《神经损伤与功能重建》 2026年第1期59-62,共4页
目的:探讨高龄老人肾功能不全与认知功能障碍的相关性。方法:回顾性选择年龄大于80岁的肾功能不全患者102例,根据MoCA评分将患者分为认知障碍组65例及认知功能正常组37例,同时检测患者的尿AD7c-NTP、MNA-SF、匹兹堡睡眠评分、尿素、肌... 目的:探讨高龄老人肾功能不全与认知功能障碍的相关性。方法:回顾性选择年龄大于80岁的肾功能不全患者102例,根据MoCA评分将患者分为认知障碍组65例及认知功能正常组37例,同时检测患者的尿AD7c-NTP、MNA-SF、匹兹堡睡眠评分、尿素、肌酐、尿酸、尿微量白蛋白/尿肌酐、血同型半胱氨酸、胰岛素抵抗指数,并进行统计学分析。结果:2组相比,年龄、性别无统计学差异(P>0.05),MoCA及AD7c-NTP差异有统计学意义(P<0.05),尿酸、HOMA-IR无统计学差异(P>0.05),尿素、肌酐、ACR、Hcy、MNA-SF、PSQI具有明显的统计学差异(P<0.05);相关性研究分析显示患者AD7c-NTP与尿素、肌酐、ACR以及MNA-SF存在相关性(P<0.05),并且与尿素、肌酐、ACR成正相关,但与MNA-SF呈负相关。患者MoCA与尿素、肌酐、ACR、MNA-SF、Hcy存在相关性(P<0.05),并且与MNA-SF存在正相关,与尿素、肌酐、ACR、Hcy存在负相关。二元Logistic回归分析结果显示,尿素、ACR、MNA-SF、PSQI与认知障碍相关(P<0.05)。结论:尿素指标的上升、ACR指标上升、营养不良以及睡眠障碍可导致高龄慢性肾功能不全患者发生认知障碍。 展开更多
关键词 肾功能不全 认知障碍 AD7c-NTP 尿素
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Rapamycin as a preventive intervention for Alzheimer’s disease in APOE4 carriers:Targeting brain metabolic and vascular restoration
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作者 Ai-Ling Lin Chetan Aware 《Neural Regeneration Research》 2026年第2期685-686,共2页
Alzheimer’s disease(AD)is the most common form of dementia,affecting over 50 million people worldwide.This figure is projected to nearly double every 20 years,reaching 82 million by 2030 and 152 million by 2050(Alzhe... Alzheimer’s disease(AD)is the most common form of dementia,affecting over 50 million people worldwide.This figure is projected to nearly double every 20 years,reaching 82 million by 2030 and 152 million by 2050(Alzheimer’s Disease International).The apolipoproteinε4(APOE4)allele is the strongest genetic risk factor for late-onset AD(after age 65 years).Apolipoprotein E,a lipid transporter,exists in three variants:ε2,ε3,andε4.APOEε2(APOE2)is protective against AD,APOEε3(APOE3)is neutral,while APOE4 significantly increases the risk.Individuals with one copy of APOE4 have a 4-fold greater risk of developing AD,and those with two copies face an 8-fold risk compared to non-carriers.Even in cognitively normal individuals,APOE4 carriers exhibit brain metabolic and vascular deficits decades before amyloid-beta(Aβ)plaques and neurofibrillary tau tangles emerge-the hallmark pathologies of AD(Reiman et al.,2001,2005;Thambisetty et al.,2010).Notably,studies have demonstrated reduced glucose uptake,or hypometabolism,in brain regions vulnerable to AD in asymptomatic middle-aged APOE4 carriers,long before clinical symptoms arise(Reiman et al.,2001,2005). 展开更多
关键词 lipid transporterexists Dementia alzheimer s disease ad RAPAMYCIN Brain metabolic Vascular restoration Amyloid beta plaques APOE
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平行缝焊工艺参数热效应量化研究及质量评价
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作者 高亚龙 张剑敏 +1 位作者 刘豫 潘吉军 《电子与封装》 2026年第2期41-46,共6页
针对平行缝焊过程中壳体温度实时监测困难、工艺参数热效应缺乏量化依据等问题,提出基于AD590温度传感芯片的壳体测温方法。通过单点温度补偿电路设计(精度±2℃),系统研究了缝焊功率、脉冲宽度、重复时间和缝焊速度对平行缝焊过程... 针对平行缝焊过程中壳体温度实时监测困难、工艺参数热效应缺乏量化依据等问题,提出基于AD590温度传感芯片的壳体测温方法。通过单点温度补偿电路设计(精度±2℃),系统研究了缝焊功率、脉冲宽度、重复时间和缝焊速度对平行缝焊过程管壳温升的影响机制,建立关键参数热效应当量模型,发现占空比与温升的线性规律及同占空比恒温现象。同时提出了涵盖焊缝外观、缝焊强度、对绝缘子的热冲击等指标的缝焊质量评价要求和方法。 展开更多
关键词 平行缝焊 AD590 热效应量化 参数优化 质量评价 微电子封装
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Shifting focus to preclinical stages:Locus coeruleus tau pathology as a driver and therapeutic target in Alzheimer’s disease
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作者 Qi Yuan Tamunotonye Omoluabi Brandon F.Hannam 《Neural Regeneration Research》 2026年第6期2335-2336,共2页
Alzheimer’s disease(AD)remains an incurable neurodegenerative disorder with devastating societal and personal impacts.Despite decades of intensive research,therapeutic efforts targeting the clinical stages of AD have... Alzheimer’s disease(AD)remains an incurable neurodegenerative disorder with devastating societal and personal impacts.Despite decades of intensive research,therapeutic efforts targeting the clinical stages of AD have largely failed to halt or reverse disease progression.This has prompted a critical shift in focus toward the earlier,preclinical stages of AD,where interventions may hold greater promise for altering the disease trajectory. 展开更多
关键词 alzheimer s disease ad remains therapeutic target Alzheimers disease neurodegenerative disorder preclinical stages locus coeruleus tau pathology
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Effects of Huanglian Jiedu Decoction on Cognitive Function in Mice with Alzheimer's Disease Induced by Porphyromonas gingivalis Infection
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作者 Linhao LIU Mengjia LI +3 位作者 Mingfen LI Yue ZHAO Kunyan ZOU Yifei CHEN 《Medicinal Plant》 2026年第1期61-64,共4页
[Objectives]To investigate the ameliorative effects of Huanglian Jiedu Decoction(HLJDD)on cognitive function impairment in an Alzheimer s disease(AD)mouse model induced by Porphyromonas gingivalis infection.[Methods]T... [Objectives]To investigate the ameliorative effects of Huanglian Jiedu Decoction(HLJDD)on cognitive function impairment in an Alzheimer s disease(AD)mouse model induced by Porphyromonas gingivalis infection.[Methods]Thirty-six male C57BL/6 mice were randomly assigned to six groups:control group,model group,low-dose HLJDD group,medium-dose HLJDD group,high-dose HLJDD group,and positive drug group(treated with moxifloxacin).With the exception of the control group,all groups underwent an 8-week P.gingivalis chronic infection model induced via oral administration.Subsequently,each treatment group received corresponding doses of HLJDD(2.5,5,and 10 mg/g)or moxifloxacin for 8 weeks intervention.The novel object recognition test was employed to evaluate the non-spatial memory abilities of mice,and the novel object exploration preference index was calculated to assess cognitive function.[Results]Compared to the control group,the novel object exploration preference index of mice in the model group was significantly reduced(P<0.01),indicating that P.gingivalis infection effectively induced cognitive impairment.Relative to the model group,mice treated with medium and high doses of HLJDD exhibited a significant,dose-dependent increase in the novel object exploration preference index,whereas the low-dose group showed no significant improvement.Additionally,the positive drug moxifloxacin demonstrated a significant neuroprotective effect on cognition.[Conclusions]HLJDD effectively improves cognitive function impairment in AD model mice induced by P.gingivalis infection,offering novel experimental evidence supporting the heat-clearing and detoxification approach as well as the therapeutic potential of traditional Chinese medicine(TCM)compounds in the intervention of AD. 展开更多
关键词 Huanglian Jiedu Decoction(HLJDD) Porphyromonas gingivalis Alzheimer's disease(AD) Novel object recognition NEUROINFLAMMATION
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Astrocyte glycolysis in Alzheimer’s disease:When the stars burn out
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作者 Simon M.Bell Heather Mortiboys 《Neural Regeneration Research》 2026年第3期1130-1131,共2页
Alzheimer’s disease(AD)is the most common form of dementia characterized pathologically by the deposition of amyloid plaques and hyperphosphorylated tau containing neurofibrillary tangles.The disease presents clinica... Alzheimer’s disease(AD)is the most common form of dementia characterized pathologically by the deposition of amyloid plaques and hyperphosphorylated tau containing neurofibrillary tangles.The disease presents clinically with progressive memory loss and disruption of cognitive function.Currently,there is no cure for AD;recent advances in the therapeutics aimed at clearing the amyloid protein from the brain have led to potential disease stabilization,however,this does not prevent eventual disease progression(Cummings et al.,2024). 展开更多
关键词 hyperphosphorylated tau containing neurofibrillary tanglesthe memory loss alzheimer s disease ad Alzheimers disease ASTROCYTE GLYCOLYSIS amyloid protein amyloid plaques
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问界M8重构豪华SUV竞争格局
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作者 虹卿 《汽车观察》 2026年第1期57-59,共3页
临近车位时,智能光毯渐次铺展,车门无感开启;早高峰拥堵路段,华为乾崑智驾ADS 4辅助驾驶系统平顺跟车、主动避障;暮色四合的郊野营地,HUAWEI XPIXEL百万像素智慧投影大灯投射出100英寸的露天巨幕……这样的豪华体验,并非来自传统豪华品... 临近车位时,智能光毯渐次铺展,车门无感开启;早高峰拥堵路段,华为乾崑智驾ADS 4辅助驾驶系统平顺跟车、主动避障;暮色四合的郊野营地,HUAWEI XPIXEL百万像素智慧投影大灯投射出100英寸的露天巨幕……这样的豪华体验,并非来自传统豪华品牌车型,而是问界M8。 展开更多
关键词 智能光毯 豪华SUV 华为乾崑智驾ADS 4 问界M8
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Blood biomarkers for Alzheimer’s disease:Key challenges of clinical implementation
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作者 Rafaela Luiza C.Franco Tai R.Hunter Fernanda G.De Felice 《Neural Regeneration Research》 2026年第6期2361-2362,共2页
Alzheimer’s disease(AD)is a complex,progressive neurodegenerative disorder and the leading cause of dementia worldwide.It is characterized by the accumulation of extracellular amyloid-beta(Aβ)plaques and intracellul... Alzheimer’s disease(AD)is a complex,progressive neurodegenerative disorder and the leading cause of dementia worldwide.It is characterized by the accumulation of extracellular amyloid-beta(Aβ)plaques and intracellular tau neurofibrillary tangles,leading to synaptic dysfunction,neuronal loss,and cognitive decline.These pathological changes can begin decades before clinical symptoms emerge,highlighting the critical need for early,accessible,and accurate diagnostic tools. 展开更多
关键词 blood biomarkers amyloid beta plaques tau neurofibrillary tanglesleading alzheimer s disease ad clinical implementation Alzheimers disease neurodegenerative disorder diagnostic tools
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鼻咽侧位片技术在儿童腺样体肥大诊断中的价值分析
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作者 周佳圆 《中国科技期刊数据库 医药》 2026年第1期018-021,共4页
评估鼻咽侧位X线摄影技术应用于儿童腺样体肥大诊断的临床效能。方法 选择100例疑似腺样体肥大患儿为观察组纳入研究,时间范围2024年5月至2025年9月。同期选取100名无相关症状儿童作为对照组。全部对象接受标准鼻咽侧位X线摄影检查。通... 评估鼻咽侧位X线摄影技术应用于儿童腺样体肥大诊断的临床效能。方法 选择100例疑似腺样体肥大患儿为观察组纳入研究,时间范围2024年5月至2025年9月。同期选取100名无相关症状儿童作为对照组。全部对象接受标准鼻咽侧位X线摄影检查。通过Ad/N比率、S值精确测量,判断腺样体阻塞程度。分组比较两组放射学参数差异。结果 计算不同肥厚分度检出率,分析影像学参数与临床症状关联性。结果 观察组Ad/N比率(0.73±0.12)明显高于对照组(0.38±0.08)(p=0.000)。S值(13.52±2.41mm)显著大于对照组(7.98±1.56mm)(p=0.000)。鼻咽侧位片对中度及以上肥厚诊断符合率达92.0%,影像参数与鼻塞、打鼾症状严重程度存在强关联(r>0.7)。结论 鼻咽侧位X线摄影技术可客观量化评估儿童腺样体大小及气道阻塞程度,诊断符合率高,与临床症候关联密切,是儿童腺样体肥大筛查与诊断的有效影像手段。 展开更多
关键词 鼻咽侧位片 腺样体肥大 儿童 影像学诊断 Ad/N比率
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Utilizing Single-cell and Spatial RNA-seq databasE for Alzheimer’s Disease(ssREAD)in hypothesis-driven queries
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作者 Diana Acosta Cankun Wang +1 位作者 Qin Ma Hongjun Fu 《Neural Regeneration Research》 2026年第2期677-678,共2页
Alzheimer’s disease(AD)is the most common form of dementia.In addition to the lack of effective treatments,there are limitations in diagnostic capabilities.The complexity of AD itself,together with a variety of other... Alzheimer’s disease(AD)is the most common form of dementia.In addition to the lack of effective treatments,there are limitations in diagnostic capabilities.The complexity of AD itself,together with a variety of other diseases often observed in a patient’s history in addition to their AD diagnosis,make deciphering the molecular mechanisms that underlie AD,even more important.Large datasets of single-cell RNA sequencing,single-nucleus RNA-sequencing(snRNA-seq),and spatial transcriptomics(ST)have become essential in guiding and supporting new investigations into the cellular and regional susceptibility of AD.However,with unique technology,software,and larger databases emerging;a lack of integration of these data can contribute to ineffective use of valuable knowledge.Importantly,there was no specialized database that concentrates on ST in AD that offers comprehensive differential analyses under various conditions,such as sex-specific,region-specific,and comparisons between AD and control groups until the new Single-cell and Spatial RNA-seq databasE for Alzheimer’s Disease(ssREAD)database(Wang et al.,2024)was introduced to meet the scientific community’s growing demand for comprehensive,integrated,and accessible data analysis. 展开更多
关键词 sex specific alzheimer s disease ad deciphering molecular mechanisms spatial transcriptomics ssread spatial transcriptomics st Alzheimers disease single cell RNA seq
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