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Design and development of sustained-release glyburide-loaded silica nanoparticles

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Abstract

The aim of this study was to develop sustained-release glyburide-loaded silica nanoparticles. Silica nanoparticles were synthesized by the sol–gel method using tetra-ethyl ortho-silane as a precursor. Glyburide was successfully entrapped in synthesized silica nanoparticles. To identify the effect of independent variables (concentration of silica and concentration of glyburide) on encapsulation efficiency and drug release (dependent variables), 32 (three level-two factors) response surface methodology was employed. Silica nanoparticles and glyburide-loaded silica nanoparticles were characterized by scanning electron microscopy, BET surface area, X-ray diffraction and Fourier transformed infrared spectroscopy. The optimum values of encapsulation efficiency and drug release were 70.21 and 87.8% over 24 h, respectively; these values agree well with predicted values obtained by response surface methodology. Glyburide-loaded silica nanoparticles were successfully prepared without any incompatibility and seem to be promising for sustained-release drug delivery application and better patient compliance.

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Acknowledgement

We are very much thankful to TEQIP-II for providing financial support to carry out this research work. We are also thankful to USV Ltd. Mumbai, for providing a gift sample of the drug and Metrohm India Ltd. for surface area as well as porosity determination of GBL-loaded SiNPs.

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Correspondence to JITENDRA B NAIK.

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PATIL, J.S., PATIL, P.B., SONAWANE, P. et al. Design and development of sustained-release glyburide-loaded silica nanoparticles. Bull Mater Sci 40, 263–270 (2017). https://doi.org/10.1007/s12034-017-1369-1

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  • DOI: https://doi.org/10.1007/s12034-017-1369-1

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