Sulfisoxazole/cyclodextrin inclusion complex incorporated in electrospun hydroxypropyl cellulose nanofibers as drug delivery system
Colloids and Surfaces B: Biointerfaces
331 - 338
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Please cite this item using this persistent URLhttp://hdl.handle.net/11693/22192
Herein, hydroxypropyl-beta-cyclodextrin (HPβCD) inclusion complex (IC) of a hydrophobic drug, sulfisoxazole (SFS) was incorporated in hydroxypropyl cellulose (HPC) nanofibers (HPC/SFS/HPβCD-IC-NF) via electrospinning. SFS/HPβCD-IC was characterized by DSC to investigate the formation of inclusion complex and the stoichiometry of the complex was determined by Job's plot. Modeling studies were also performed on SFS/HPβCD-IC using ab initio technique. SEM images depicted the defect free uniform fibers and confirmed the incorporation of SFS/HPβCD-IC in nanofibers did not alter the fiber morphology. XRD analyses showed amorphous distribution of SFS/HPβCD-IC in the fiber mat. Release studies were performed in phosphate buffered saline (PBS). The results suggest higher amount of SFS released from HPC/SFS/HPβCD-IC-NF when compared to free SFS containing HPC nanofibers (HPC/SFS-NF). This was attributed to the increased solubility of SFS by inclusion complexation. Sandwich configurations were prepared by placing HPC/SFS/HPβCD-IC-NF between electrospun PCL nanofibrous mat (PCL-HPC/SFS/HPβCD-IC-NF). Consequently, PCL-HPC/SFS/HPβCD-IC-NF exhibited slower release of SFS as compared with HPC/SFS/HPβCD-IC-NF. This study may provide more efficient future strategies for developing delivery systems of hydrophobic drugs. © 2015 Elsevier B.V.
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