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首页> 外文期刊>Journal of Microencapsulation: Microcapsules Liposomes Nanoparticles Microcells Microspheres >In vitro/in vivo evaluation of gamma-aminobutyric acid-loaded N,N-dimethylacrylamide-based pegylated polymeric nanoparticles for brain delivery to treat epilepsy
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In vitro/in vivo evaluation of gamma-aminobutyric acid-loaded N,N-dimethylacrylamide-based pegylated polymeric nanoparticles for brain delivery to treat epilepsy

机译:γ/氨基丁酸负载的N,N-二甲基丙烯酰胺基聚乙二醇化聚合物纳米粒子在脑部递送治疗癫痫的体内/体外评估

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摘要

Objectives of this study were the delivery of gamma aminobutyric acid (GABA) into the brain by means of developing brain targeted, nanosized, non-toxic and biocompatible polymeric nanoparticles, and investigating their effectiveness in epilepsy. For this purpose, GABA conjugated N,N-dimethylacrylamide-based pegylated nanoparticles were designed and characterised for particle size, zeta potential, pH, morphology, DSC, XRD, FTIR, GABA quantification and in vitro release. Formulations showed smaller particle size, cationic zeta potential characteristic, possible GABA polymeric matrix interaction and prolonged release pattern. Brain responses were examined using epileptic rats. Both formulations prepared were found to increase latency of seizure, decrease ending time of convulsion, duration of severe convulsion and mortality rate significantly compared with GABA solution. When GABA concentration was measured in Stratum corsatum, there was no statistical difference between GABA solution and formulations. All findings suggested enhancement in all phases of seizures indicating efficient delivery of GABA into the brain via formulations.
机译:这项研究的目的是通过开发脑靶向的,纳米级,无毒且生物相容的聚合物纳米颗粒,并研究其在癫痫中的有效性,将γ氨基丁酸(GABA)递送至大脑。为此,设计了GABA共轭的N,N-二甲基丙烯酰胺基聚乙二醇化纳米颗粒,并对其粒径,ζ电位,pH,形态,DSC,XRD,FTIR,GABA定量和体外释放进行了表征。制剂显示出较小的粒径,阳离子ζ电势特性,可能的GABA聚合物基质相互作用和延长的释放模式。使用癫痫大鼠检查脑反应。与GABA溶液相比,发现两种制剂均增加了癫痫发作的潜伏期,缩短了惊厥的终止时间,严重的惊厥持续时间和死亡率。当测量皮层中的GABA浓度时,GABA溶液和制剂之间没有统计学差异。所有发现都表明癫痫发作的各个阶段都有增强,表明通过制剂有效地将GABA递送到大脑中。

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