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Methods used for the measurement of blood-brain barrier integrity
2021年2月26日 · Sodium fluorescein (NaF) has been widely used in the evaluation of BBB permeability (He et al. 2014; Lassmann et al. 1984; Roszkowski and Bohacek 2016). NaF is very small, nontoxic, and detectable at very low concentrations.
Sigma Fluorescein sodium 荧光素钠盐(血脑屏障通透性测定)
体外血脑屏障(bbb)模型中最常用方法是使用静脉注射的活体染料(示踪剂,探针),分子量大于180da,可排除在外不能穿透完整脑屏障。 满足此要求最小分子量探针是荧光素钠盐(NaFI,分子量:376Da),最大分子量是伊文斯蓝(EB,分子量:961Da)。
【求助】荧光素钠测定血脑屏障通透性 - DXY.cn
2012年6月25日 · 各位前辈:本人实验中采用荧光素钠(FLUORESCEIN SODIUM )测定血脑屏障通透性,具体方法如下:小鼠腹腔注射1%NaFI(5ml/kg),一小时后灌注取脑,然后1ml PBS中匀浆,然后再加1ml60%三氯乙酸,4摄氏度放置半小时,然后18000g,4℃,离心10min,然后取上清250ul,酶标仪测定 (ex485nm,em530nm)。 目前处于预实验阶段,经常测出的OD值比blank的值还要小,不晓得是咋回事,而且每个标本测得的值都是一万多,blank也是一万多。 求各位大侠 …
Temporal and Spatial Effects of Blast Overpressure on Blood-Brain ...
2018年6月6日 · Extravasation of sodium fluorescein (NaF) and Evans blue (EB) tracers were used to demonstrate that compromise of the BBB occurs immediately following shock loading, increases in...
Human iPSC-derived brain endothelial microvessels in a multi-well ...
2022年7月1日 · Due to its molecular properties, NaF has been suggested as the tracer of choice that enables the detection of small changes in BBB tightness associated to small microvascular disruptions in vivo [38]. In our study, TEER and NaF intensity data provided a precise and sensitive measure enabling the detection of small changes in barrier tightness ...
Brain metastatic cancer cells release microRNA-181c-containing
2015年4月1日 · Here we show that cancer-derived extracellular vesicles (EVs), mediators of cell–cell communication via delivery of proteins and microRNAs (miRNAs), trigger the breakdown of BBB. Importantly,...
Characterization of the blood–brain barrier in genetically …
2021年7月28日 · In this study, we characterized the BBB of eight inbred mouse strains; A/J, C57BL/6 J, CAST/EiJ, DBA/2J, NOD/ShiLtJ, PWK/PhJ, WSB/EiJ, and 129S1/SvImJ using several phenotypic arms. We quantified vessel density, pericyte coverage, BBB permeability to NaF, and characterized endothelial A-V zonation pattern.
使用血管通透性标记物评估血脑屏障完整性:伊文思蓝、荧光素钠 …
由脑微血管内皮细胞构成的血脑屏障(BBB)是一个动态界面,它控制和调节包括肽、蛋白质、离子、维生素、激素和免疫细胞在内的各种物质从循环进入脑实质的运输. 某些疾病/病症,如阿尔茨海默氏病、败血症和高血压,可导致不同程度的 BBB 破坏。 此外,血脑屏障完整性受损与癫痫等各种神经退行性疾病的发病机制有关。 为了探索这些疾病/病症的广泛病理生理机制,在体外细胞培养模型和实验室动物体内针对 BBB 完整性的各种实验性损伤已被证明可以改变 BBB 通透 …
伊文思蓝和荧光素钠对大鼠脑外渗的不同模式。,PLOS ONE - X-MOL
2013年7月5日 · 埃文斯蓝染料 (EBD; 961 Da) 和荧光素钠染料 (NaF; 376 Da) 是血脑屏障 (BBB) 研究中常用的惰性示踪剂。 它们都是具有相似疏脂特性的高电荷低分子量 (LMW) 示踪剂。