title: PLGA nanoparticles containing praziquantel: effect of formulation variables on size distribution.
abstract: Praziquantel has been shown to be highly effective against all known species of Schistosoma infecting humans. Spherical nanoparticulate drug carriers made of poly(D,L-lactide-co-glycolide) acid with controlled size were designed. Praziquantel, a hydrophobic molecule, was entrapped into the nanoparticles with theoretical loading varying from 10 to 30% (w/w). This study investigates the effects of some process variables on the size distribution of nanoparticles prepared by emulsion-solvent evaporation method. The results show that sonication time, PLGA and drug amounts, PVA concentration, ratio between aqueous and organic phases, and the method of solvent evaporation have a significant influence on size distribution of the nanoparticles.
authors.affiliation: Programa de Pós-Graduação em Ciências Farmacêuticas, UNESP, Rod. Araraquara-Jaú km 1, CEP 14802-902, Araraquara, SP, Brazil. mainardes@fcfar.unesp.br
authors.forename: Rubiana M
authors.initials: RM
authors.lastname: Mainardes
authors.forename: Raul C
authors.initials: RC
authors.lastname: Evangelista
mesh_terms: D002626:Chemistry, Pharmaceutical; D019344:Lactic Acid / Q000737:chemistry* / Q000493:pharmacokinetics; D049329:Nanostructures / Q000737:chemistry*; D010316:Particle Size; D011100:Polyglycolic Acid / Q000737:chemistry* / Q000493:pharmacokinetics; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D011108:Polymers / Q000737:chemistry* / Q000493:pharmacokinetics; D011223:Praziquantel / Q000737:chemistry* / Q000493:pharmacokinetics
chemical_list: D011108:Polymers; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D011100:Polyglycolic Acid; D019344:Lactic Acid; D011223:Praziquantel