Enhanced solubility and oral bioavailability of itraconazole by combining membrane emulsification and spray drying technique

Title
Enhanced solubility and oral bioavailability of itraconazole by combining membrane emulsification and spray drying technique
Author(s)
용철순최영근[최영근]포델 비자이[포델 비자이]마라시니니르말[마라시니니르말]양관열[양관열]김정환[김정환]김종오최한곤[최한곤]
Keywords
SOLID-STATE EMULSIONS; DRUG-DELIVERY; INTERFACIAL-TENSION; MULTIPLE EMULSIONS; CERAMIC MEMBRANES; INCLUSION COMPLEX; NANO-EMULSIONS; DROPLET SIZE; STABILITY; FORMULATION
Issue Date
201209
Publisher
ELSEVIER SCIENCE BV
Citation
INTERNATIONAL JOURNAL OF PHARMACEUTICS, v.434, no.1-2, pp.264 - 271
Abstract
The objective of the present study was to enhance solubility and bioavailability of itraconazole by a combined use of membrane emulsification and spray drying solidification technique. A shirasu-porous-glass (SPG) membrane with a mean pore size of 2.5 mu m was used to produce monodispersed microemulsions of itraconazole consisting of methylene chloride as the dispersed phase, a mixture of Transcutol HP and Span 20 as a stabilizer, and dextran as solid carrier dissolved in water as the continuous phase. The dispersed phase permeated through the SPG membrane into the continuous phase at an agitator speed of 150 rpm, a feed pressure of 15 kPa and a continuous phase temperature of 25 degrees C and the resultant emulsion was solidified using spray-drying technique. Solid state characterizations of the solid emulsion showed that the crystal state of itraconazole in solid emulsion was converted from crystalline to amorphous form. The solid emulsion of itraconazole displayed a significant increase in the dissolution rate than that of pure itraconazole. Furthermore, the solid emulsion after oral administration gave about eight-fold higher AUC and about ten-fold higher C-max in rats than pure itraconazole powder (p < 0.05), indicating this formulation greatly improved the oral bioavailability of drug in rats. Thus, these results demonstrated that the SPG membrane emulsification system combined with spray-drying technique could be used as a promising technique to develop solid formulation of itraconazole with enhanced solubility and bioavailability. (C) 2012 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/27325http://dx.doi.org/10.1016/j.ijpharm.2012.05.039
ISSN
0378-5173
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약학대학 > 약학부 > Articles
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