Abstract
The development of innovative products for restoring skin integrity and promoting wound healing is still a challenge. The aim of this work was to evaluate an innovative Spanish broom wound dressing impregnated with Glycyrrhiza glabra extract-loaded ufasomes to improve wound healing. Ufasomes were characterized in terms of size, polydispersity index, entrapment efficiency, zeta potential, and stability. In addition, in vitro release studies and biocompatibility, biosafety, and scratch tests on WS1 fibroblasts were performed. The loaded ufasomes showed a nanometric size (<250 nm), good size distribution (lower than 0.3), and appropriate encapsulation efficiency (~67%). Moreover, the lipid vesicles showed good stability during the storage period and allowed for a slow release of glycyrrhizin, the main bioactive compound of the extract. Biological studies revealed that loaded vesicles are not cytotoxic, are hemocompatible, and lead to the complete closure of the scratch after about 33 h. To conclude, the results suggest that the developed dressings can be efficiently used to promote the healing process.
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