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Comparison Between Franz Diffusion Cell and a novel Micro-physiological System for In Vitro Penetration Assay Using

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|January 21, 2022
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Summary
This summary is machine-generated.

This study compared the Franz Diffusion Cell (FDC) and MIVO systems for evaluating skin penetration. The MIVO platform better predicted lipophilic molecule permeation, offering insights into transdermal delivery systems.

Keywords:
Drug deliverycaffeine penetrationin vitro diffusion systemskin model

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Area of Science:

  • Dermal and Transdermal Drug Delivery
  • In Vitro Skin Penetration Models
  • Formulation Science

Background:

  • In vitro diffusive models are crucial for screening active ingredient penetration and assessing transdermal delivery systems.
  • Evaluating skin penetration enhancers, carrier systems, and bioavailability is essential for effective transdermal formulations.
  • Various in vitro models exist to study compound penetration kinetics across the skin barrier.

Purpose of the Study:

  • To compare the performance of the Franz Diffusion Cell (FDC) and a novel fluid-dynamic platform (MIVO).
  • To evaluate the penetration of caffeine and LIP1 using different vehicles (water, propylene glycol with oleic acid) on Strat-M® membrane and pig ear skin.
  • To assess the predictive capability of each system for transdermal delivery.

Main Methods:

  • Utilized Franz Diffusion Cell (FDC) and MIVO fluid-dynamic platform for in vitro skin penetration studies.
  • Employed caffeine and LIP1 as model compounds with varying lipophilicity.
  • Applied formulations topically to Strat-M® membrane or pig ear skin under infinite-dose conditions and quantified absorption via HPLC at multiple time points.

Main Results:

  • Both FDC and MIVO showed similar penetration kinetics trends for caffeine and LIP1.
  • Strat-M® exhibited a lower barrier function compared to pig ear skin.
  • The propylene glycol/oleic acid vehicle enhanced penetration in both diffusive systems and skin surrogates.

Conclusions:

  • The MIVO system demonstrated superior prediction of lipophilic molecule permeation, especially under conditions mimicking physiological fluid flow.
  • The choice of skin model (Strat-M® vs. pig skin) impacts barrier function assessment.
  • Formulation vehicle composition significantly influences skin penetration, highlighting the importance of excipient selection in transdermal delivery.