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A sequential algorithm for the non-linear dual-sorption model of percutaneous drug absorption
A B Gumel1, K Kubota, E H Twizell
1Faculty of Information Technology, Universiti Telekom, Melaka, Malaysia.
Mathematical Biosciences
|September 4, 1998
Summary
A new algorithm aids in understanding percutaneous drug absorption using the dual-sorption model. This model explains how drug concentration affects pharmacokinetic profiles and lag-time, offering insights into non-linear kinetic behavior.
Area of Science:
- Pharmacokinetics
- Drug Delivery
- Mathematical Modeling
Background:
- Percutaneous drug absorption studies often show decreased lag-time with increased donor concentration.
- The dual-sorption model is used to explain these non-linear kinetic behaviors.
- Previous models did not fully capture all observed phenomena post-vehicle removal.
Purpose of the Study:
- To develop a sequential algorithm for the non-linear dual-sorption model.
- To identify new characteristics of the dual-sorption model after vehicle removal.
- To provide experimental evidence for the dual-sorption model's applicability in percutaneous absorption.
Main Methods:
- Development of a sequential algorithm for the dual-sorption model.
- Analysis of drug flux versus time plots after vehicle removal.
- Comparison of half-life changes at different donor concentrations.
Main Results:
- The dual-sorption model predicts prolonged half-life after vehicle removal, unlike linear models.
- Initial half-life post-vehicle removal is longer with lower donor concentrations.
- Drug flux versus time plots show linear behavior initially on a semilogarithmic scale.
Conclusions:
- The dual-sorption model explains non-linear kinetic behavior in percutaneous drug absorption.
- Observed changes in half-life after vehicle removal can confirm the dual-sorption model.
- The developed algorithm facilitates the monitoring of pharmacokinetic profiles.