Liposome surface charge influence on skin penetration behaviour.

Area of Science:

• Pharmacology
• Materials Science
• Dermatology

Background:

• Vesicular systems, like liposomes, are known to enhance dermal and transdermal drug delivery.
• The precise mechanisms of drug transport into and through the skin via vesicular systems are still under investigation.
• Surface charge of liposomes has been suggested as a key factor influencing drug penetration.

Purpose of the Study:

• To investigate the impact of liposome surface charge on skin penetration.
• To develop an effective carrier system for enhancing the skin delivery of betamethasone and betamethasone dipropionate.
• To optimize liposomal formulations for improved topical drug efficacy.

Main Methods:

• Characterization of liposomes including size, morphology, zeta potential, encapsulation efficiency, and stability.
• Ex vivo skin diffusion studies utilizing Franz diffusion cells.
• Confocal microscopy to visualize fluorescently labeled liposome penetration in skin.

Main Results:

• Negatively charged liposomes demonstrated a notable enhancement in the skin penetration of betamethasone and betamethasone dipropionate.
• Liposome surface charge was confirmed as a critical parameter influencing drug delivery efficiency.
• Successful visualization of liposome interaction with skin layers was achieved.

Conclusions:

• Negatively charged liposomes show significant potential for improving the dermal delivery of corticosteroids.
• Surface charge modification offers a viable strategy for optimizing liposomal drug carriers for enhanced skin penetration.
• This study provides a foundation for developing advanced vesicular systems for topical pharmaceutical applications.