Acoustic Cavitation-Assisted Formulation of Solid Lipid Nanoparticles using Different Stabilizers.

Area of Science:

• Nanotechnology
• Materials Science
• Pharmaceutical Sciences

Background:

• Solid lipid nanoparticles (SLNs) offer excellent bioavailability and biocompatibility, making them promising for drug delivery systems.
• SLNs encapsulate drugs within a lipid matrix and require stabilizers for formulation.
• Investigating novel formulation methods for SLNs is crucial for advancing drug delivery technologies.

Purpose of the Study:

• To evaluate the feasibility of acoustic cavitation-assisted hot melt mixing for formulating SLNs.
• To assess the impact of different stabilizers (Gelucire 50/13, Poloxamer 407, Pluronic F-127) on SLN properties.
• To characterize the physico-chemical properties and in vitro performance of the prepared SLNs.

Main Methods:

• Formulation of SLNs using Compritol 888 ATO as the lipid matrix and ketoprofen as the model drug.
• Application of acoustic cavitation-assisted hot melt mixing with various stabilizers.
• Characterization using dynamic light scattering, electron microscopy (SEM, TEM), FTIR, XRD, and DSC.
• In vitro drug release studies and cytotoxicity assays on Raw 264.7 cells.

Main Results:

• SLNs exhibited spherical morphology with a core-shell structure and particle sizes below 250 nm.
• High encapsulation efficiency (nearly 90%) and drug loading (12%) were achieved across different stabilizers.
• Over 90% drug release was observed within 72 hours, with release increasing with pH.
• The prepared SLNs demonstrated good biocompatibility and were non-toxic to Raw 264.7 cells.

Conclusions:

• Acoustic cavitation-assisted hot melt mixing is a feasible method for producing SLNs with desirable characteristics.
• The tested stabilizers (GEL, POL, PLU) are suitable for this SLN formulation technique.
• The resulting SLNs show potential for effective and safe drug delivery applications.