Abstract:
Fluocinolone acetonide polymeric micelles (FPM) were fabricated using factorial design and their physicochemical properties were examined. Concentration of P407 affected FPMs appearance, stability, particle size and zeta potential. Small angle X-ray scattering (SAX) observed that only FPM7 and FPM8 provide hexagonal micelle structure for all temperature. The release of FA from FPMs were fitted into zero-order kinetic and the permeation of FPMs were fitted into Higuchi model. High storage temperature at 45°C for 30 days decreased the FA contents in FPMs excepted for FPM7 and 8, thus, they were selected for further investigation. Prominent characteristics of FPMs were revealed on DSC, TGA, XRD, and FTIR as crystalline state inside polymeric micelles. The morphology of both FPMs observed polymeric micelles surrounded the FA molecule and afforded nanosize particle size. The ex-vivo permeation results of FPM penetrated through porcine esophagus for 5, 15 and 30 min were investigated using ATR microscopic. FPM7 was fast penetrated though the epithelium, lamina propria, and submucosa and remained in all layers at 30 min whereas the FPM8 penetrated and pass through the layers. FA loaded in polymeric micelles was successfully developed with extending mucoadhesiveness, influencing drug-mucosal retention time, and increasing fluocinolone acetonide permeation which might be a promising innovative for increasing efficiency of mouthrinse and others topical pharmaceutical and dental applications