Computational and experimental model of transdermal iontophorethic drug delivery system

Nenad Filipovic, Igor Saveljic, Vladislav Rac, Beatriz Olalde Graells, Goran Bijelic

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

The concept of iontophoresis is often applied to increase the transdermal transport of drugs and other bioactive agents into the skin or other tissues. It is a non-invasive drug delivery method which involves electromigration and electroosmosis in addition to diffusion and is shown to be a viable alternative to conventional administration routs such as oral, hypodermic and intravenous injection. In this study we investigated, experimentally and numerically, in vitro drug delivery of dexamethasone sodium phosphate to porcine skin. Different current densities, delivery durations and drug loads were investigated experimentally and introduced as boundary conditions for numerical simulations. Nernst–Planck equation was used for calculation of active substance flux through equivalent model of homogeneous hydrogel and skin layers. The obtained numerical results were in good agreement with experimental observations. A comprehensive in-silico platform, which includes appropriate numerical tools for fitting, could contribute to iontophoretic drug-delivery devices design and correct dosage and drug clearance profiles as well as to perform much faster in-silico experiments to better determine parameters and performance criteria of iontophoretic drug delivery.

Original languageEnglish
Pages (from-to)383-388
Number of pages6
JournalInternational Journal of Pharmaceutics
Volume533
Issue number2
DOIs
Publication statusPublished - 30 Nov 2017

Keywords

  • Dexamethasone sodium phosphate
  • Drug delivery
  • Finite element method
  • Iontophoresis

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