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Current Pharmaceutical Design


ISSN (Print): 1381-6128
ISSN (Online): 1873-4286

Review Article

Recent In Vitro and In Silico Advances in the Understanding of Intranasal Drug Delivery

Author(s): John Chen*, Andrew R. Martin and Warren H. Finlay*

Volume 27 , Issue 12 , 2021

Published on: 12 November, 2020

Page: [1482 - 1497] Pages: 16

DOI: 10.2174/1381612826666201112143230

Price: $65


Background: Many drugs are delivered intranasally for local or systemic effect, typically in the form of droplets or aerosols. Due to the high cost of in vivo studies, drug developers and researchers often turn to in vitro or in silico testing when first evaluating the behavior and properties of intranasal drug delivery devices and formulations. Recent advances in manufacturing and computer technologies have allowed for increasingly realistic and sophisticated in vitro and in silico reconstructions of the human nasal airways.

Objective: The study aims to perform a summary of advances in the understanding of intranasal drug delivery based on recent in vitro and in silico studies.

Conclusion: The turbinates are a common target for local drug delivery applications, and while nasal sprays are able to reach this region, there is currently no broad consensus across the in vitro and in silico literature concerning optimal parameters for device design, formulation properties and patient technique which would maximize turbinate deposition. Nebulizers can more easily target the turbinates, but come with the disadvantage of significant lung deposition. Targeting of the olfactory region of the nasal cavity has been explored for the potential treatment of central nervous system conditions. Conventional intranasal devices, such as nasal sprays and nebulizers, deliver very little dose to the olfactory region. Recent progress in our understanding of intranasal delivery will be useful in the development of the next generation of intranasal drug delivery devices.

Keywords: Particle deposition, regional deposition, olfactory region, nasal sprays, nebulizers, nasal valve, nasal replica, CFD.

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