title: Effect of nanostructured lipid vehicles on percutaneous absorption of curcumin.
abstract: The present study describes the production and characterization of monoolein aqueous dispersions (MAD) and lecithin organogels (ORG) as percutaneous delivery systems for curcumin (CUR). In particular, MAD stabilized by sodium cholate/poloxamer and w0 3 ORG lipid carriers, both in the presence and absence of CUR, have been considered: MAD morphology and dimensional distribution have been investigated by Cryogenic Transmission Electron Microscopy (cryo-TEM) and Photon Correlation Spectroscopy (PCS), while the inner structure of MAD and ORG has been studied by X-ray scattering techniques. As a general result, CUR chemical stability has been found to be better controlled by MAD, probably because CUR is more protected in the case of CUR-MAD with respect to CUR-ORG. To investigate the performance of differently composed lipid formulations as CUR delivery system, in vitro studies, based on Franz cell and stratum corneum-epidermis (SCE) membranes, and in vivo studies, based on skin reflectance spectrophotometry and tape stripping, were then performed. The results indicated that ORG induces a rapid and intense initial penetration of CUR probably due to a strong interaction between the peculiar supramolecular aggregation structure of phospholipids in the vehicle and the lipids present in the stratum corneum. Conversely, CUR incorporated into MAD can be released in a controlled fashion possibly because of the formation of a CUR depot in the stratum corneum. In this respect ORG could be employed in pathologies requiring rapid CUR action, while MAD could be proposed for assuring a prolonged CUR activity.
authors.affiliation: Department of Life Sciences and Biotechnologies, University of Ferrara, Ferrara, Italy. Electronic address: ese@unife.it.
authors.forename: Elisabetta
authors.initials: E
authors.lastname: Esposito
authors.affiliation: Department of Life Sciences and Biotechnologies, University of Ferrara, Ferrara, Italy.
authors.forename: Laura
authors.initials: L
authors.lastname: Ravani
authors.affiliation: Department of Life and Environmental Sciences and CNISM, Università Politecnica delle Marche, Ancona, Italy.
authors.forename: Paolo
authors.initials: P
authors.lastname: Mariani
authors.affiliation: Univ Paris-Sud, Faculté de Pharmacie, Châtenay-Malabry Cedex, France; CNRS UMR 8612, Institut Galien Paris-Sud, Châtenay-Malabry Cedex, France.
authors.forename: Nicolas
authors.initials: N
authors.lastname: Huang
authors.affiliation: Electron Microscopy Center, University of Ferrara, Ferrara, Italy.
authors.forename: Paola
authors.initials: P
authors.lastname: Boldrini
authors.affiliation: Macromolecular Chemistry II, University of Bayreuth, Germany.
authors.forename: Markus
authors.initials: M
authors.lastname: Drechsler
authors.affiliation: Department of Life Sciences and Biotechnologies, University of Ferrara, Ferrara, Italy; Kyung Hee University, Dept. of Food and Nutrition, Seoul, South Korea.
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Valacchi
authors.affiliation: Department of Life Sciences and Biotechnologies, University of Ferrara, Ferrara, Italy.
authors.forename: Rita
authors.initials: R
authors.lastname: Cortesi
authors.affiliation: Department of Drug Science, University of Catania, Catania, Italy.
authors.forename: Carmelo
authors.initials: C
authors.lastname: Puglia
mesh_terms: D000328:Adult; D002626:Chemistry, Pharmaceutical / Q000379:methods; D003474:Curcumin / Q000737:chemistry* / Q000378:metabolism*; D004337:Drug Carriers / Q000737:chemistry / Q000378:metabolism; D016503:Drug Delivery Systems / Q000379:methods; D004817:Epidermis / Q000378:metabolism; D005260:Female; D005782:Gels / Q000737:chemistry / Q000378:metabolism; D005989:Glycerides / Q000737:chemistry / Q000378:metabolism; D006801:Humans; D054709:Lecithins / Q000737:chemistry / Q000378:metabolism; D008055:Lipids / Q000737:chemistry*; D008297:Male; D049329:Nanostructures / Q000737:chemistry*; D014677:Pharmaceutical Vehicles / Q000737:chemistry* / Q000378:metabolism*; D010743:Phospholipids / Q000737:chemistry / Q000378:metabolism; D012867:Skin / Q000378:metabolism*; D012869:Skin Absorption
chemical_list: D004337:Drug Carriers; D005782:Gels; D005989:Glycerides; D054709:Lecithins; D008055:Lipids; D014677:Pharmaceutical Vehicles; D010743:Phospholipids; C005953:monoolein; D003474:Curcumin
keywords: Controlled release; Cubosomes; Curcumin; Organogel; Reflectance spectroscopy; Tape-stripping