title: Porous nanoparticles of metoprolol tartrate produced by spray-drying: development, characterization and in vitro evaluation.
abstract: The present investigation was undertaken to fabricate porous nanoparticles of metoprolol tartrate by spray-drying using ammonium carbonate as pore former. Prepared nanoparticles were coated with Eudragit S100 polymer in order to prevent the release of metoprolol tartrate in the upper GI tract. It was shown that nanoparticles with low size ranges can be obtained with a low feed inlet rate. Micromeritic studies confirmed that nanoparticle batches are discrete and free flowing. Effects of the pore former on drug loading, porosity and in vitro release were studied. It was found that there was an increase in drug loading and porosity with increasing the amount of pore former. In vitro drug release studies showed that an increase in pore former made drug release faster. Release kinetics proved that nanoparticles follow a zero-order release mechanism.
authors.affiliation: Department of Pharmaceutics, JSS College of Pharmacy, JSS University, Sri Shivarathreeshwara Nagara, Mysore-570015, India. mshuaibkhan68@gmail.com
authors.forename: Mohammed S
authors.initials: MS
authors.lastname: Khan
authors.forename: Gowda D
authors.initials: GD
authors.lastname: Vishakante
authors.forename: H G
authors.initials: HG
authors.lastname: Shivakumar
mesh_terms: D000959:Antihypertensive Agents / Q000737:chemistry*; D002254:Carbonates / Q000737:chemistry; D002482:Cellulose / Q000737:chemistry; D055598:Chemical Phenomena; D048271:Chitosan / Q000737:chemistry; D003692:Delayed-Action Preparations / Q000737:chemistry; D004339:Drug Compounding; D005079:Excipients / Q000737:chemistry; D007700:Kinetics; D008790:Metoprolol / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D010316:Particle Size; D011109:Polymethacrylic Acids / Q000737:chemistry; D012995:Solubility; D013499:Surface Properties
chemical_list: D000959:Antihypertensive Agents; D002254:Carbonates; D003692:Delayed-Action Preparations; D005079:Excipients; D011109:Polymethacrylic Acids; C038300:methylmethacrylate-methacrylic acid copolymer; D002482:Cellulose; D048271:Chitosan; D008790:Metoprolol; C040502:ammonium carbonate; C109691:microcrystalline cellulose