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Lamotrigine loaded PLGA nanoparticles intended for direct nose to brain delivery in epilepsy: pharmacokinetic, pharmacodynamic and scintigraphy study.
Artificial Cells, Nanomedicine, and Biotechnology ( IF 5.8 ) Pub Date : 2021-12-01 , DOI: 10.1080/21691401.2021.1939709
Pranav Shah 1 , Priya Dubey 1 , Bhavin Vyas 1 , Ankur Kaul 2 , Anil Kumar Mishra 2 , Dimple Chopra 3 , Priya Patel 4
Affiliation  

The present study aimed to investigate the brain targeting efficacy of Lamotrigine (LTG) loaded PLGA nanoparticles (LTG-PNPs) upon intranasal administration. LTG-PNPs were fabricated through the emulsification-solvent evaporation technique and evaluated for % Entrapment efficiency, particle size, in-vitro release, surface morphology, crystallinity, ex-vivo permeation & thermal behaviour. Biodistribution, gamma scintigraphy, and pharmacodynamic studies were performed in BALB/c mice, New Zealand rabbits, and Wistar rats respectively. LTG-PNPs exhibited % EE 71%; particle size 170.0 nm; Polydispersity index 0.191; zeta potential -16.60 mV. LTG-PNPs exhibited a biphasic release pattern. Biodistribution and gamma scintigraphy studies proved a greater amount of LTG in the brain following intranasal delivery of LTG-PNPs in comparison to LTG-SOL. Pharmacodynamic studies demonstrated delayed seizure onset time with LTG-PNPs in comparison to LTG-SOL. Intranasal administration of LTG-PNPs provided prolonged release, higher bioavailability, and better brain targeting bypassing the BBB. The developed formulation could be administered as a once-a-day formulation that would reduce the dosing frequency; dose; dose-related side effects; cost of the therapy and would be beneficial in the management of epilepsy as compared to the LTG-SOL. However, the proof of concept generated through these studies needs to be further validated in higher animals and human volunteers.

中文翻译:

载有拉莫三嗪的 PLGA 纳米颗粒,用于癫痫患者直接从鼻部到脑部给药:药代动力学、药效学和闪烁扫描研究。

本研究旨在研究负载拉莫三嗪 (LTG) 的 PLGA 纳米粒子 (LTG-PNPs) 在鼻内给药时的脑靶向功效。LTG-PNP 是通过乳化溶剂蒸发技术制造的,并评估了截留率、粒径、体外释放、表面形态、结晶度、离体渗透和热行为。分别在 BALB/c 小鼠、新西兰兔和 Wistar 大鼠中进行了生物分布、γ 闪烁扫描和药效学研究。LTG-PNP 的 EE % 为 71%;粒径 170.0 nm;多分散指数 0.191;zeta 电位 -16.60 mV。LTG-PNPs 表现出双相释放模式。生物分布和伽马闪烁扫描研究证明,与 LTG-SOL 相比,鼻内递送 LTG-PNPs 后大脑中的 LTG 含量更高。药效学研究表明,与 LTG-SOL 相比,LTG-PNP 的癫痫发作时间延迟。LTG-PNP 的鼻内给药提供了延长释放、更高的生物利用度和更好的大脑靶向绕过 BBB。开发的制剂可以作为一天一次的制剂给药,这将减少给药频率;剂量; 剂量相关的副作用;与 LTG-SOL 相比,治疗成本高,并且有利于癫痫的管理。然而,通过这些研究产生的概念证明需要在高等动物和人类志愿者中进一步验证。开发的制剂可以作为一天一次的制剂给药,这将减少给药频率;剂量; 剂量相关的副作用;与 LTG-SOL 相比,治疗成本高,并且有利于癫痫的管理。然而,通过这些研究产生的概念证明需要在高等动物和人类志愿者中进一步验证。开发的制剂可以作为一天一次的制剂给药,这将减少给药频率;剂量; 剂量相关的副作用;与 LTG-SOL 相比,治疗成本高,并且有利于癫痫的管理。然而,通过这些研究产生的概念证明需要在高等动物和人类志愿者中进一步验证。
更新日期:2021-07-19
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