Preparation of Encapsulated Resveratrol Liposome Thermosensitive Gel and Evaluation of Its Capability to Repair Sciatic Nerve Injury in Rats

Abstract EN

The purpose of this study was to prepare a liposomal temperature-sensitive gel able to slowly release resveratrol after local intramuscular injection.

The best formulation of resveratrol liposomes was based on the highest encapsulation efficiency and drug loading designed by Box-Behnken.

The prepared liposomes were approximately circular, with a mean particle diameter of 161.5±0.12 nm and zeta potential of -6.9 mV.

The optimized liposomes were dispersed in a polymer gel (PLGA-PEG-PLGA) for preparation of an in situ-formed gel at 35±2°C.

In vitro release of the prepared liposome temperature-sensitive gel was studied and compared with ordinary drug-releasing gels, revealing a significantly longer drug release time.

Finally, a rat sciatic nerve injury model was used to evaluate the pharmacological activity of the liposome temperature-sensitive gels for the repair of damaged nerves.

The results indicate that the gel was able to promote recovery of damaged nerves.