title: Preparation and physicochemical characterization of naproxen-PLGA nanoparticles.
abstract: Naproxen is a non-steroidal anti-inflammatory drug which can be used for the treatment of inflammatory disorders like uveitis and arthirit rheumatoid. The aim of the present study was to investigate the physicochemical characteristics of naproxen-PLGA nanoparticles. The nanoparticles of naproxen with PLGA were formulated using the solvent evaporation/extraction technique (the single emulsion technique). Several process parameters i.e., drug/polymer ratio, aqueous phase volume and speed of homogenization were considered with the aim of achieve optimal preparation conditions. The physicochemical characteristics of nanoparticles were studied applying particle size analysis, differential scanning calorimetry, X-ray crystallography, Fourier transform infrared spectroscopy and scanning electron microscopy. The release rate of naproxen from various drug/polymer nanoparticles was investigated as well. All the prepared formulations using PLGA resulted in nano-range size particles (352-571 nm) with spherical smooth morphology. The nanoparticles of naproxen-PLGA displayed lower crystallinity with no chemical interactions between the drug and polymer molecules. The nanoparticles exhibited the slower release of drug in comparison with the intact drug and the physical mixtures. According of these findings, formulation of the naproxen-PLGA nanoparticles was able to improve the physicochemical characteristics of the drug and possibly will increase the anti-inflammatory effects of drug following its ocular or intra-joint administration.
authors: Faculty of Pharmacy, Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
authors: Yousef
authors: Y
authors: Javadzadeh
authors: Fatemeh
authors: F
authors: Ahadi
authors: Soodabeh
authors: S
authors: Davaran
authors: Ghobad
authors: G
authors: Mohammadi
authors: Araz
authors: A
authors: Sabzevari
authors: Khosro
authors: K
authors: Adibkia
mesh_terms: D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000138:chemical synthesis* / Q000737:chemistry; D002627:Chemistry, Physical; D019344:Lactic Acid / Q000737:chemistry*; D009288:Naproxen / Q000737:chemistry*; D010316:Particle Size; D011100:Polyglycolic Acid / Q000737:chemistry*; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D033362:Powder Diffraction; D013499:Surface Properties; D013696:Temperature; D013997:Time Factors
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D011100:Polyglycolic Acid; D019344:Lactic Acid; D009288:Naproxen