Antibacterial PEGylated Solid Lipid Microparticles for Cosmeceutical Purpose: Formulation, Characterization, and...

Area of Science:

• Cosmetic Science
• Pharmaceutical Technology
• Dermatology

Background:

• Antioxidant polyphenols like resveratrol (RSV) are of interest for treating skin diseases.
• Resveratrol and Limonene (LIM) exhibit anti-inflammatory and antibacterial properties against Staphylococcus aureus, a common cause of skin disorders like acne vulgaris.
• Topical delivery of RSV faces challenges due to instability and poor skin absorption.

Purpose of the Study:

• To design and characterize solid lipid microparticles as composite vehicles for enhanced topical delivery of trans-resveratrol.
• To improve the stability and skin permeation of resveratrol.
• To evaluate the antimicrobial efficacy of the developed microparticulate system against Staphylococcus aureus.

Main Methods:

• Development of solid lipid microparticles using a mixture of PEGylated lipids, long-chain alcohols, and Limonene (LIM).
• Encapsulation of trans-resveratrol (RSV) within the microparticulate system to achieve an amorphous state.
• Characterization of microparticles for shape, size distribution, and drug loading.
• Antimicrobial testing against Staphylococcus aureus.

Main Results:

• The microparticulate system successfully encapsulated a high amount of trans-RSV in an amorphous state, enhancing its half-life and preventing isomerization.
• The developed particles demonstrated good characteristics in terms of shape, size distribution, and drug loading.
• Empty microspheres exhibited inherent antimicrobial activity, which was further enhanced by the presence of Limonene (LIM).

Conclusions:

• Solid lipid microparticles serve as effective composite vehicles for the topical delivery of resveratrol (RSV).
• The system enhances RSV absorption through the stratum corneum and improves its stability.
• The microparticulate system, particularly with Limonene, shows promise as a bactericidal vehicle for skin applications against Staphylococcus aureus.