Lipid-hydrogel films for sustained drug release

Area of Science:

• Materials Science
• Biotechnology
• Drug Delivery Systems

Background:

• Developing effective drug delivery systems is crucial for therapeutic efficacy.
• Sustained drug release mechanisms are needed to improve patient compliance and treatment outcomes.
• Hydrogels and lipid nanoparticles are promising platforms for drug encapsulation and delivery.

Purpose of the Study:

• To develop and characterize a hybrid system combining nanostructured lipid particles and kappa-carrageenan hydrogel for sustained drug release.
• To investigate the drug release kinetics and understand the role of lipid particles in modulating release.
• To evaluate the potential of this hybrid system for controlled therapeutic applications.

Main Methods:

• Fabrication of nanostructured lipid particles via kinetically stabilized self-assembly.
• Preparation of kappa-carrageenan hydrogel and incorporation of drug-loaded or native lipid particles.
• Dehydration of hydrogel matrices into thin films for drug release studies.
• Characterization using UV-vis spectroscopy, Fourier transform infrared (FTIR) spectroscopy, and small-angle X-ray scattering (SAXS).

Main Results:

• The hybrid system effectively encapsulated drugs within lipid particles and the hydrogel matrix.
• Pre-encapsulation in lipid particles prevented direct drug-hydrogel interactions and hindered rapid diffusion.
• Drug release from the lipid-hydrogel matrix was sustained by an order of magnitude compared to native hydrogel films.
• Characterization confirmed the structural integrity and drug incorporation within the hybrid system.

Conclusions:

• The hybrid nanostructured lipid particle-hydrogel system offers a robust platform for sustained drug delivery.
• This approach provides enhanced control over drug release kinetics, overcoming limitations of conventional hydrogels.
• The developed system holds significant potential for advanced controlled therapeutic applications.