Journal
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
Volume 49, Issue 2, Pages 227-233Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpba.2008.10.032
Keywords
beta-Cyclodextrin; Econazole; Fluconazole; Itraconazole; Supercriticai CO2
Categories
Funding
- Research Affairs at the United Arab Emirates University [01-02-7-12104]
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Antifungal drugs are the most common systemic drugs used for the treatment of oropharyngeal candidiasis, which is the first symptom of HIV infection. However, the efficacy and bioavailability of these drugs have been limited by their poor aqueous solubility and dissolution rate. Therefore, the aim of this study was to investigate the effect of different preparation methods (i.e. kneading, coevaporation, sealed-heating, and a solid inclusion technique using supercritical carbon dioxide carrier (SC CO2-inclusion)) for obtaining solid inclusion complexes between beta-cyclodextrin and three antifungal drugs (itraconazole, econazole, and fluconazole). The physicochemical properties of the different products were characterized by differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR) and powder X-ray diffractometry (PXRD). For the complexes prepared by the SC CO2-inclusion method, the effects of temperature and pressure have also been investigated. Results suggested the possibility of complex formation between beta-cyclodextrin and the three antifungal agents, and indicated that inclusion formation was influenced by the preparation technique. SC CO2-inclusion method proved to be an effective technique for preparing solid-state inclusion complexes between beta-cyclodextrin and antifungal drugs, avoiding the use of organic solvents. Moreover, temperature of the SC CO2 played a major role in promoting drug-carrier interactions, whereas pressure had limited effects. (c) 2008 Elsevier B.V. All rights reserved.
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