Glycerosomes: a new tool for effective dermal and transdermal drug delivery.
Int J Pharm
; 455(1-2): 66-74, 2013 Oct 15.
Article
em En
| MEDLINE
| ID: mdl-23911913
ABSTRACT
This work describes glycerosomes, vesicles composed of phospholipids, glycerol, and water, as novel vesicular carriers for (trans)dermal drug delivery. In this work, glycerosomes were prepared by hydrating dipalmitoylglycerophosphatidylcholine-cholesterol films with glycerol aqueous solutions (10-30%, v/v). The model drug was diclofenac sodium salt and conventional liposomes were used as control. Prepared formulations were characterized in terms of size distribution, morphology, zeta potential, and vesicle deformability. Glycerosomes and liposomes were oligo/multilamellar vesicles, spherical in shape with a mean diameter ranging between 81 and 97 nm and a fairly narrow distribution (P.I.=0.14-0.19), negative zeta potential values (from -35 to -48) and drug loading capacity between 64 and 73%. Deformability index of both conventional liposomes and glycerosomes showed that glycerol is able to act as edge activator for dipalmitoylglycerophosphatidylcholine bilayers when used in concentration higher than 10%. DSC studies suggested that glycerosomes are in a more fluid state than conventional liposomes. In vitro transdermal delivery experiments showed an improved skin deposition and permeation of diclofenac when 20 and 30% glycerosomes were used. MTT test demonstrated that glycerosomes were able to reduce the in vitro drug toxicity versus keratinocytes.
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Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Pele
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Anti-Inflamatórios não Esteroides
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Diclofenaco
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Sistemas de Liberação de Medicamentos
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Glicerol
Limite:
Animals
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Humans
Idioma:
En
Revista:
Int J Pharm
Ano de publicação:
2013
Tipo de documento:
Article
País de afiliação:
Itália