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Ammonium Glycyrrhizate Skin Delivery From Ultradeformable Liposomes: A Novel Use as an Anti-Inflammatory Agent in Topical Drug Delivery

Ammonium Glycyrrhizate Skin Delivery From Ultradeformable Liposomes: A Novel Use as an Anti-Inflammatory Agent in Topical Drug Delivery

Antonella Barone, Maria Chiara Cristiano, Felisa Cilurzo, Marcello Locatelli, Dalila Iannotta, Luisa Di Marzio, Christian Celia, Donatella Paolino

Colloids Surf B Biointerfaces. 2020 May 25;193:111152.

PMID: 32535351

Abstract:

Glycyrrhiza glabra L. is a native plant of Central and South-Western Asia that is also diffused in the Mediterranean area and contains several bioactive compounds such as: flavonoids, sterols, triterpene and saponins. Glycyrrhizin, containing glycyrrhizic and glycyrrhizinic acids has anti-inflammatory and antiallergic effects that are similar to corticosteroids. Ammonium glycyrrhizinate is a derivative salt of glycyrrhizic acid with similar anti-inflammatory activity that cannot pass through the skin due to its physicochemical properties and molecular weight. Although several nanoformulations, such as ethosomes, are designed to provide a systemic effect through a topical application, there are different limitations to the distribution inside the blood stream. For this reason, ultradeformable liposomes, or transfersomes, are selected to improve the topical delivery of drugs and allow the distribution of payloads in the blood stream because they pass intact through the stratum corneum epidermis barrier, due to the presence of sodium cholate, aqueous cutaneous gradient, and the rapid penetration of transfersomes by cutaneous tight junctions, thus allowing the systemic delivery of different therapeutic cargo in non-occlusive conditions. The aim of this work was the synthesis and physicochemical characterization of the ammonium glycyrrhizinate-loaded ultradeformable liposomes, the evaluation of drug release and permeation through stratum corneum and epidermis barrier. The in vivo anti-inflammatory effect of ammonium glycyrrhizinate-loaded ultradeformable liposomes was tested on human healthy volunteers. The results demonstrated that the ammonium glycyrrhizinate-loaded ultradeformable liposomes decreased the skin inflammation on the human volunteers and the resulting nanoformulations can be used as a potential topical drug delivery system for anti-inflammatory therapy. ☆Parts of these results were presented as a poster communication at the Recent Developments in Pharmaceutical Analysis 2019 (RDPA 2019), Chieti, Italy.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP53956040-A	Ammonium Glycyrrhizate		53956-04-0	Price

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