Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
2486346 | Journal of Pharmaceutical Sciences | 2011 | 13 Pages |
Abstract
A poorly soluble model drug, indomethacin (IMC), was loaded into two types of silica particles using three different loading methods. The loading efficiency and the extent/rate of drug release were evaluated. Widely used equipment in pharmaceutical laboratories, rotavapor and fluid bed, were used in the loading. The porous materials used were ordered mesoporous silica MCMâ41 and nonordered silica gel Syloid 244 FP EU. The materials differ both in their pore properties and particle sizes. Tablets were successfully compressed from the IMCâloaded particles. Mechanical stability of the porous structures was studied with XRPD and nitrogen sorption after tableting and drug release was evaluated at pH 5.5 before and after tableting. The release of the poorly soluble IMC was faster from the Syloid than from the MCMâ41, presumably due to the larger pore size and smaller particle size. Loading of IMC into the MCMâ41 microparticles improved the drug dissolution, and blending the microparticles with pharmaceutical excipients improved the IMC release even further. The fast release was also maintained after tableting. Loading of IMC into the Syloid particles alone was sufficient to produce similar IMC release profiles, as in the case of MCMâ41 with the excipients. © 2011 WileyâLiss, Inc. and the American Pharmacists Association J Pharm Sci 100:3294-3306, 2011
Keywords
Related Topics
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Pharmacology, Toxicology and Pharmaceutical Science
Drug Discovery
Authors
Tarja Limnell, Hélder A. Santos, Ermei Mäkilä, Teemu Heikkilä, Jarno Salonen, Dmitry Yu. Murzin, Narendra Kumar, Timo Laaksonen, Leena Peltonen, Jouni Hirvonen,