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AIMS: Poly(lactic-co-glycolic) acid (PLGA) nanoparticles containing the hydrophobic antifungal itraconazole (ITZ) were developed to address the need for more effective means of treating fungal infections. MATERIALS & METHODS: PLGA-ITZ nanoparticles were synthesized using an oil-in-water emulsion evaporation method. Nanoparticle morphology (studied by transmission electron microscopy), size zeta potential (dynamic light scattering), encapsulation efficiency (UV-visible spectroscopy), release profile and antifungal activity were characterized. RESULTS: PLGA-ITZ nanoparticles (of 220 nm in diameter) completely inhibited Aspergillus flavus growth over 11 days at 0.03 mg/ml ITZ; a similar effect was achieved at ×100 ITZ concentrations (3 mg/ml) in emulsified form. The ITZ in water formulation had the least antifungal effect, inhibiting growth for only 2 days at 3 mg/ml ITZ. CONCLUSION: This system is envisioned to increase bioavailability of ITZ by improving aqueous dispersibility and increasing antifungal penetration, thereby increasing antifungal activity of the entrapped drug.
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Patel et al. (2010) studied this question.
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