Related Experiment Videos
In vitro/in vivo correlation studies for transdermal delta 8-THC development
Satyanarayana Valiveti1, Dana C Hammell, D Caroline Earles
1Division of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536-0082, USA.
Journal of Pharmaceutical Sciences
|April 7, 2004
Summary
This study developed a transdermal therapeutic system (TTS) for Delta-8-THC, demonstrating its controlled release and effective plasma levels in guinea pigs, comparable to in vitro predictions.
Area of Science:
- Pharmacology
- Dermatology
- Drug Delivery Systems
Background:
- Transdermal therapeutic systems (TTS) offer a promising route for drug delivery.
- Delta-8-tetrahydrocannabinol (Delta(8)-THC) has therapeutic potential, but effective delivery methods are needed.
Purpose of the Study:
- To develop and evaluate a transdermal therapeutic system (TTS) for Delta-8-THC.
- To assess the in vitro permeability and in vivo pharmacokinetics of Delta(8)-THC delivered via TTS.
Main Methods:
- In vitro permeability studies using flow-through diffusion cells with human and hairless guinea pig skin.
- Pharmacokinetic analysis in guinea pigs after topical TTS application and intravenous administration.
- Evaluation of skin as a rate-controlling membrane for Delta(8)-THC delivery.
Main Results:
- No significant difference in Delta(8)-THC flux or permeability coefficient between human and hairless guinea pig skin.
- Skin effectively controlled Delta(8)-THC delivery rate.
- TTS achieved a mean steady-state plasma concentration of 4.4 ng/mL within 1.4 h, maintained for 48 h.
- In vitro predictions correlated well with observed in vivo plasma concentrations.
Conclusions:
- The developed TTS is effective for controlled transdermal delivery of Delta(8)-THC.
- Hairless guinea pig skin serves as a suitable model for predicting human skin permeability.
- The TTS demonstrates potential for sustained therapeutic delivery of Delta(8)-THC.