Physical Characterizations and In Vitro Skin Permeation of Elastic Liposomes for Transdermal Delivery of Polygonum aviculare L. Extract

In this study, Polygomun aviculare L. (P aviculare L.) extract loaded elastic liposomes (ELPs) were investigated to enhance the transdermal delivery of P aviculare L. extract composed of various flavonoids. ELPs were composed of egg phospholipids (PC) and edge activator (Tego (R) care 450) and the physical properties and in vitro permeation studies of ELPs were performed. Particle size ranged from 148.1 to 262.2 nm and deformability index was recorded as 11.5 similar to 25.4. Loading efficiency was from 53.1 to 66.3%. In vitro skin permeation studies using Franz diffusion cell demonstrated that ELP-4 having ratio of 85:15 for PC to Tego (R) care 450 exhibited the higher skin permeability than ELP-1, the general liposome without Tego (R) care 450. It was visually seen by fluorescence image restoration microscopy. The findings suggest that ELP-4 selected as the optimal formulation could be used as useful formulation for transdermal delivery of the extract.