title: Compressed biodegradable matrices of spray-dried PLGA microspheres for the modified release of ketoprofen.
abstract: A spray-drying technique was used to prepare poly(lactide-co-glycolide) (PLGA) drug loaded microspheres. Ketoprofen was chosen as a model NSAID drug. The microspheres were characterized in terms of morphology, drug content and release behaviour. The spray-dried particles were subject to a direct compression process for the preparation of biodegradable matrix tablets. The spray-dried powders were found to have good compaction properties. Tablets were also prepared from a mixture of microspheres and microcrystalline cellulose, mannitol and hydroxypropylmethylcellulose or sodium alginate. The release of ketoprofen in phosphate buffer (pH 7.4) was significantly sustained, indicating the suitability of using tabletted spray-dried PLGA microspheres for controlled drug delivery. The results show that spray-dried PLGA particles have promising properties as direct compression and release controlling excipients in matrix tablets for oral administration.
authors.affiliation: Dipartimento di Scienze del Farmaco, University of Sassari, Sassari, Italy.
authors.forename: E
authors.initials: E
authors.lastname: Gavini
authors.forename: V
authors.initials: V
authors.lastname: Sanna
authors.forename: C
authors.initials: C
authors.lastname: Juliano
authors.forename: P
authors.initials: P
authors.lastname: Giunchedi
mesh_terms: D000284:Administration, Oral; D000464:Alginates; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000009:adverse effects* / Q000737:chemistry / Q000493:pharmacokinetics; D001673:Biodegradation, Environmental; D002151:Calorimetry / Q000379:methods; D002482:Cellulose; D003692:Delayed-Action Preparations; D004337:Drug Carriers; D004339:Drug Compounding / Q000379:methods; D007660:Ketoprofen / Q000008:administration & dosage* / Q000737:chemistry / Q000493:pharmacokinetics; D019344:Lactic Acid; D008353:Mannitol; D008855:Microscopy, Electron, Scanning; D008863:Microspheres; D011100:Polyglycolic Acid; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D011108:Polymers; D013607:Tablets
chemical_list: D000464:Alginates; D000894:Anti-Inflammatory Agents, Non-Steroidal; D003692:Delayed-Action Preparations; D004337:Drug Carriers; D011108:Polymers; D013607:Tablets; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D011100:Polyglycolic Acid; D019344:Lactic Acid; D008353:Mannitol; D002482:Cellulose; D007660:Ketoprofen