Modeling diffusion-based drug release inside a nerve conduit in vitro and in vivo validation study.
Drug delivery
Drug release model
FK506; nerve conduit
Journal
Drug delivery and translational research
ISSN: 2190-3948
Titre abrégé: Drug Deliv Transl Res
Pays: United States
ID NLM: 101540061
Informations de publication
Date de publication:
02 2021
02 2021
Historique:
pubmed:
6
5
2020
medline:
26
11
2021
entrez:
6
5
2020
Statut:
ppublish
Résumé
The objective of this work was to develop a model and understand the diffusion of a drug into and throughout a drug delivering nerve conduit from a surrounding reservoir through a hole in the wall separating the lumen of the conduit and the reservoir. A mathematical model based on Fick's law of diffusion was developed using the finite difference method to understand the drug diffusion and the effect of varying device parameters on the concentration of drug delivered from a hole-based drug delivery device. The mathematical model was verified using a physical microfluidic (μFD) model and an in vitro/in vivo release test using prototype devices. The results of the mathematical model evaluation and microfluidic device testing offered positive insight into the reliability and function of the reservoir and hole-based drug delivering nerve conduit. The mathematical model demonstrated how changing device parameters would change the drug concentration inside the device. It was observed that the drug release in the conduit could be tuned by both concentration scaling and changing the hole size or number of holes. Based on the results obtained from the microfluidic device, the error in the mathematical drug release model was shown to be less than 10% when comparing the data obtained from mathematical model and μFD model. The data highlights the flexibility of having a hole-based drug delivery system, since the drug release can be scaled predictably by changing the device parameters or the concentration of the drug in the reservoir. Graphical abstract .
Identifiants
pubmed: 32367424
doi: 10.1007/s13346-020-00755-y
pii: 10.1007/s13346-020-00755-y
doi:
Substances chimiques
Pharmaceutical Preparations
0
Types de publication
Journal Article
Research Support, U.S. Gov't, Non-P.H.S.
Langues
eng
Sous-ensembles de citation
IM
Pagination
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