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Drug Delivery Letters

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ISSN (Print): 2210-3031
ISSN (Online): 2210-304X

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Research Article

Intranasal Delivery of Leuprolide Acetate Chitosan Nanoparticles for Treatment of Alzheimer’s Disease

Author(s): Tosha Pandya and Abhay Dharamsi*

Volume 13, Issue 2, 2023

Published on: 15 February, 2023

Page: [120 - 132] Pages: 13

DOI: 10.2174/2210303113666230120124831

Price: $65

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Abstract

Background: Alzheimer’s is one of the primary causes and the most prevalent form of age-related dementia worldwide. There is an urgent surge to find an effective treatment for AD due to its social implications on society.

Aim: Present research work aims to develop Chitosan nanoparticles of leuprolide acetate for the treatment of Alzheimer’s disease by delivery through the intranasal route.

Methods: Chitosan nanoparticles encapsulating leuprolide acetate were prepared using the ionic gelation method and optimized using a central composite design. The optimized nanoparticles were evaluated by DSC study, TEM analysis, release study of the drug in vitro and ex vivo, histopathology study, and accelerated stability study, In vivo kinetic and dynamic study.

Results: The optimized formulation exhibited particle size of 254.3 ± 10.7 nm, % EE of 85.6 ± 0.8 %, and zeta potential of +18.0 ± 0.2 mv. The release of drug from optimized nanoparticles in vitro was in a sustained manner, with only 75.7 % drug released at 48 hours. Higher permeation of the drug from nanoparticles (Papp =5.44 ± 0.34 x 104) was observed in the diffusion study ex vivo. Sheep nasal toxicity and accelerated stability study proved the intranasal safety and stability of the developed formulation. The in vivo drug uptake study indicated a greater brain drug concentration from chitosan nanoparticles than from plain drug solution. The anti-Alzheimer potential was also evident from behavioural studies and histopathology study of rat brain.

Conclusion: Thus, the chitosan nanoparticulate formulation of leuprolide acetate was found to have great potential for Alzheimer’s disease management.

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