Abstract
The phospholipid-bile salts-mixed micelles (PL-BS-MMs) are potent carriers used for oral absorption of drugs that are poorly soluble in water; however, there are many limitations associated with liquid formulations. In the current study, the feasibility of preparing the fast dissolving oral films (FDOFs) containing PL-BS-MMs was examined. FDOFs incorporated with Cucurbitacin B (Cu B)-loaded PL-sodium deoxycholate (SDC)-MMs have been developed and characterized. To prepare the MMs and to serve as the micellar carrier, a weight ratio of 1:0.8 and total concentration of 54 mg/mL was selected for the PL/SDC based on the size, size distribution, zeta potential, encapsulation efficiency, and morphology. The concentration of Cu B was determined to be 5 mg/mL. Results showed that a narrow size distributed nanomicelles with a mean particle size of 86.21 ± 6.11 nm and a zeta potential of −31.21 ± 1.17 mV was obtained in our optimized Cu B-PL/SDC-MMs formulation. FDOFs were produced by solvent casting method and the formulation with 50 mg/mL of pullulan and 40 mg/mL of PEG 400 were deemed based on the physico-mechanical properties. The FDOFs containing Cu B-PL/SDC-MMs were easily reconstituted in a transparent and clear solution giving back a colloidal system with spherical micelles in the submicron range. In the in vitro dissolution test, the FDOFs containing Cu B-PL/SDC-MMs showed an increased dissolution velocity markedly. The pharmacokinetics study showed that the FDOFs containing PL-SDC-MMs not only kept the absorption properties as same as the PL-SDC-MMs, but also significantly increased the oral bioavailability of Cu B compared to the Cu B suspension (p < 0.05). This study showed that the FDOFs containing Cu B-PL/SDC-MMs could represent a novel platform for the delivery of poorly water-soluble drugs via oral administration. Furthermore, the integration with the FDOFs could also provide a simple and cost-effective manner for the solidification of PL-SDC-MMs.
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Qing-yuan Lv and Xian-yi Li contributed equally to this work as first author.
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Lv, Qy., Li, Xy., Shen, Bd. et al. A solid phospholipid-bile salts-mixed micelles based on the fast dissolving oral films to improve the oral bioavailability of poorly water-soluble drugs. J Nanopart Res 16, 2455 (2014). https://doi.org/10.1007/s11051-014-2455-6
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DOI: https://doi.org/10.1007/s11051-014-2455-6