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Research Article

The transport effect of submicron emulsions on 5-flurouracil topical application

, , , , , & show all
Pages 425-431 | Received 12 Jun 2012, Accepted 29 Oct 2012, Published online: 19 Mar 2013
 

Abstract

Water-in-oil submicron emulsions were used as carrier for the topical delivery of 5-fluorouracil (5FU). The effect of components such as level and hydrophilic–lipophilic balance (HLB) value of surfactant, type of cosurfactant, and drug concentration on the delivery capability of drug in the receptor fluid and in the various skin layers (stratum corneum, epidermis and dermis) were evaluated. The result showed the submicron emulsion could increase the transdermal and deposition of 5FU compared with the aqueous control. Submicron emulsion with surfactant at HLB of 6.0 had higher deposition amount of drug in epidermis layer. The deposition amount of drug in the skin layers increased with increased amounts of surfactant and drug loading of submicron emulsion. However, the 0.2% 5FU-load submicron emulsion showed a comparable deposition effect in various skin layers with the commercial product (5%, Efudix®), which indicated that the submicron emulsions could be a promising drug vehicle for topical application.

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