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- W2892094182 abstract "Increasing the degree of supersaturation of drugs and maintaining their proper stability are very important in improving the oral bioavailability of poorly soluble drugs by a supersaturated drug delivery system (SDDS). In this study, we reported a complex system of Soluplus-Copovidone (Soluplus-PVPVA) loaded with the model drug silybin (SLB) that could not only maintain the stability of a supersaturated solution but also effectively promote oral absorption. The antiprecipitation effect of the polymers on SLB was observed using the solvent-shift method. In addition, the effects of the polymers on absorption were detected by cellular uptake and transport experiments. The mechanisms by which the Soluplus-PVPVA complex promotes oral absorption were explored by dynamic light scattering, transmission electron microscopy, fluorescence spectra and isothermal titration calorimetry analyses. Furthermore, a pharmacokinetic study in rats was used to demonstrate the advantages of the Soluplus-PVPVA complex. The results showed that Soluplus and PVPVA spontaneously formed complexes in aqueous solution via the adsorption of PVPVA on the hydrophilic-hydrophobic interface of the Soluplus micelle, and the Soluplus-PVPVA complex significantly increased the absorption of SLB. In conclusion, the Soluplus-PVPVA complex is a potential SDDS for improving the bioavailability of hydrophobic drugs." @default.
- W2892094182 created "2018-09-27" @default.
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- W2892094182 date "2019-01-01" @default.
- W2892094182 modified "2023-10-14" @default.
- W2892094182 title "Supersaturated polymeric micelles for oral silybin delivery: the role of the Soluplus–PVPVA complex" @default.
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- W2892094182 doi "https://doi.org/10.1016/j.apsb.2018.09.004" @default.
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