Real-time UV imaging of nicotine release from transdermal patch

Area of Science:

• Pharmacokinetics and Drug Delivery
• Analytical Chemistry
• Biomedical Imaging

Background:

• In vitro drug release studies are crucial for evaluating drug delivery systems.
• Traditional methods can lack spatial and temporal resolution.
• Nicotine patches require precise release characterization.

Purpose of the Study:

• To evaluate UV imaging as a platform for in vitro release studies.
• To use Nicorette® nicotine patches as a model drug delivery system.
• To characterize the capabilities of UV imaging for drug release analysis.

Main Methods:

• Nicotine release from Nicorette® patches was studied using UV imaging (Actipix SDI300) at 254 nm.
• Release rates were measured in phosphate buffer (0.067 M, pH 7.40).
• Results were compared with the paddle-over-disk method.

Main Results:

• UV imaging enabled the establishment of calibration curves for nicotine quantification.
• Temporally and spatially resolved nicotine concentration gradients were visualized.
• Release profiles from UV imaging qualitatively agreed with the paddle-over-disk method.

Conclusions:

• UV imaging provides real-time visualization and quantification of drug release.
• This technology demonstrates potential for in vitro drug release testing.
• UV imaging can enhance the understanding of drug delivery system performance.