Journal
INTERNATIONAL JOURNAL OF PHARMACEUTICS
Volume 275, Issue 1-2, Pages 171-187Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ijpharm.2004.01.033
Keywords
PLGA; nanoparticles; W/O/W emulsification solvent evaporation method; cipofloxacin; experimental design
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Poly(lactide-co-glycolide) nanoparticles incorporating ciprolloxacin HCl were prepared by means of a W/O/W emulsification solvent evaporation method. The stabiliser selected was poly(vinylalcohol). A 2(4) full factorial design based on four independent variables was used to plan the experiments and the variable parameters were the number of homogenisation cycles, addition of boric acid to the inner water phase containing the drug, ciprofloxacin concentration in the inner water phase and oil:outer water phase ratio. The effects of these parameters on the particle size, zeta potential, drug loading efficiency and drug release were investigated. Also the effect of gamma irradiation on the particle size and drug release was evaluated and DSC and XRD analyses of the compounds and the nanoparticles were performed. The activity on two series of microorganisms, Pseudomonas aeruginosa and Staphylococcus aureus, was examined. (C) 2004 Elsevier B.V. All rights reserved.
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