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Related Concept Videos

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Pore transport, also known as convective transport, is a process where small molecules like urea, water, and sugars rapidly cross cell membranes as though there were channels or pores in the membrane. Although direct microscopic evidence is limited  but the concept of pores or channels is widely accepted based on physiological evidence. Despite the lack of direct...
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The selection of a drug's delivery route depends upon its physicochemical properties, including lipid or water solubility and ionization, as well as the therapeutic requirement, such as immediate or sustained effect. These routes can be divided into three primary categories: enteral, parenteral, and topical.
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Body:After oral administration, poor permeability often limits the rate at which drugs are absorbed through the intestinal epithelium. Enhancing drug permeability is crucial for effective therapy, and several strategies have been developed to overcome this challenge.One effective strategy involves the use of lipid-based formulations. These formulations enhance dissolution and solubility, targeting physiological mechanisms to increase drug absorption. This includes stimulating bile salt...
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Related Experiment Video

Updated: Jan 15, 2026

Development, Characterization, and Evaluation of CAGE-based Ionic Liquid Systems for Transdermal Delivery
09:44

Development, Characterization, and Evaluation of CAGE-based Ionic Liquid Systems for Transdermal Delivery

Published on: September 26, 2025

439

Development, Characterization, and Evaluation of CAGE-based Ionic Liquid Systems for Transdermal Delivery.

Saahil Sandeep Baghel1, Maja Munck Nikolajsen1, Stefanie Dietl1

  • 1LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen.

Journal of Visualized Experiments : Jove
|October 13, 2025
PubMed
Summary

Choline and geranic acid ionic liquid (CAGE) enhances transdermal drug delivery by improving skin penetration and dissolving poorly soluble drugs. This biocompatible ionic liquid shows potential for various therapeutic applications with minimal skin impact.

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Published on: September 26, 2025

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Area of Science:

  • Pharmaceutical Sciences
  • Materials Science

Background:

  • Ionic liquids are gaining recognition for drug delivery applications, particularly enhancing cutaneous drug penetration and permeation.
  • Their excellent solvation properties address challenges with poorly soluble drugs.
  • Ionic liquids are tunable functional salts liquid at room temperature due to ion asymmetry.

Purpose of the Study:

  • To prepare, characterize, and evaluate a biocompatible ionic liquid composed of choline and geranic acid (CAGE) for transdermal drug delivery.
  • To assess CAGE's potential for delivering various active pharmaceutical ingredients (APIs) with minimal skin barrier impact.

Main Methods:

  • Preparation and characterization of CAGE (choline:geranic acid, 1:2 ratio).
  • Characterization techniques included NMR spectroscopy, differential scanning calorimetry, and Karl-Fischer titration for water content.
  • Evaluation involved ex vivo barrier interaction studies on porcine skin.

Main Results:

  • Successful preparation and characterization of CAGE.
  • Demonstrated potential for transdermal delivery of small molecules, peptides, proteins, and nucleic acids.
  • Ex vivo studies indicated minimal impact on skin barrier function.

Conclusions:

  • CAGE is a promising biocompatible ionic liquid for transdermal drug delivery.
  • It effectively enhances drug permeation and solubility while maintaining skin integrity.
  • CAGE offers a tunable platform for diverse therapeutic applications.