title: The transport effect of submicron emulsions on 5-flurouracil topical application.
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.
authors.affiliation: Graduate Institute of Clinical Pharmacy, Kaohsiung Medical University, 100 Shih-Chuan 1st Road, Kaohsiung City 80708, Taiwan, ROC.
authors.forename: Yaw-Bin
authors.initials: YB
authors.lastname: Huang
authors.forename: Chi-Te
authors.initials: CT
authors.lastname: Huang
authors.forename: Hsin-Yeh
authors.initials: HY
authors.lastname: Tsou
authors.forename: Li-Tse
authors.initials: LT
authors.lastname: Fu
authors.forename: Yaw-Sya
authors.initials: YS
authors.lastname: Fu
authors.forename: Yi-Hung
authors.initials: YH
authors.lastname: Tsai
authors.forename: Pao-Chu
authors.initials: PC
authors.lastname: Wu
mesh_terms: D000279:Administration, Cutaneous; D000818:Animals; D000964:Antimetabolites, Antineoplastic / Q000008:administration & dosage* / Q000493:pharmacokinetics; D004337:Drug Carriers / Q000737:chemistry / Q000378:metabolism*; D004655:Emulsions / Q000737:chemistry / Q000378:metabolism*; D005472:Fluorouracil / Q000008:administration & dosage* / Q000493:pharmacokinetics; D051381:Rats; D017207:Rats, Sprague-Dawley; D012867:Skin / Q000378:metabolism; D012869:Skin Absorption
chemical_list: D000964:Antimetabolites, Antineoplastic; D004337:Drug Carriers; D004655:Emulsions; D005472:Fluorouracil