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The choroid plexus-cerebrospinal fluid interface in Alzheimer's disease:more than just a barrier 被引量:2
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作者 Sriram Balusu Marjana Brkic +1 位作者 Claude Libert Roosmarijn E.Vandenbroucke 《Neural Regeneration Research》 SCIE CAS CSCD 2016年第4期534-537,共4页
The choroid plexus is a complex structure which hangs inside the ventricles of the brain and consists mainly of choroid plexus epithelial(CPE) cells surrounding fenestrated capillaries.These CPE cells not only form ... The choroid plexus is a complex structure which hangs inside the ventricles of the brain and consists mainly of choroid plexus epithelial(CPE) cells surrounding fenestrated capillaries.These CPE cells not only form an anatomical barrier,called the blood-cerebrospinal fluid barrier(BCSFB),but also present an active interface between blood and cerebrospinal fluid(CSF).CPE cells perform indispensable functions for the development,maintenance and functioning of the brain.Indeed,the primary role of the choroid plexus in the brain is to maintain homeostasis by secreting CSF which contains different molecules,such as nutrients,neurotrophins,and growth factors,as well as by clearing toxic and undesirable molecules from CSF.The choroid plexus also acts as a selective entry gate for leukocytes into the brain.Recent findings have revealed distinct changes in CPE cells that are associated with aging and Alzheimer's disease.In this review,we review some recent findings that highlight the importance of the CPE-CSF system in Alzheimer's disease and we summarize the recent advances in the regeneration of brain tissue through use of CPE cells as a new therapeutic strategy. 展开更多
关键词 alzheimer's disease choroid plexus brain barrier blood-csf barrier aging neurodegenerative diseases
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APPSWE Tg2576小鼠脑屏障结构 被引量:1
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作者 崔占军 刘芳 +2 位作者 赵凯冰 李冰梅 刘中华 《解剖学报》 CAS CSCD 北大核心 2018年第5期571-578,共8页
目的探讨小鼠的血脑屏障(BBB)及血脑脊液屏障(BCSFB)的基本结构及其在阿尔茨海默病(AD)发生、发展过程中结构、功能及及其超微结构的改变。方法实验用动物采用APPSWE Tg2576鼠,分为APPSWE转基因阳性鼠(模型组)和同窝生野生型小鼠(对照... 目的探讨小鼠的血脑屏障(BBB)及血脑脊液屏障(BCSFB)的基本结构及其在阿尔茨海默病(AD)发生、发展过程中结构、功能及及其超微结构的改变。方法实验用动物采用APPSWE Tg2576鼠,分为APPSWE转基因阳性鼠(模型组)和同窝生野生型小鼠(对照组),每组各20只。饲养16个月后进行全身灌流固定,开颅切取侧脑室室壁及其脉络丛组织。采用免疫荧光及透射电子显微镜技术观察BBB及BCSFB的超微结构,从而观察AD模型脑屏障的改变。结果 AD模型组与对照组相比较,血管密度明显降低; AD小鼠脑屏障正常结构受到损害,主要是脑血管内皮细胞(或脉络丛内皮细胞)之间的连接及其细胞器受损,脉络丛超微结构也出现明显变化,主要表现为细胞间隙增宽,细胞之间的黏附连接等连接结构也有部分碰坏,胞质内出现较多的囊泡状结构等。结论和正常鼠相比,AD鼠脑屏障受到一定的损害,可能致使脑屏障的转运机制出现相应的改变并影响脑内β-淀粉样蛋白(Aβ)的清除,脑屏障中存在的稳态机制,如其分泌物和受体介导的信号传导也可能出现改变,这些因素可能共同参与了AD的形成和进展。 展开更多
关键词 阿尔茨海默病 血脑屏障 血脑脊液屏障 脉络丛 增殖 血管神经单元 免疫荧光 小鼠
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