Enhanced oral bioavailability of morin administered in mixed micelle formulation with PluronicF127 and Tween80 in rats

Biological & Pharmaceutical Bulletin
Yeon Ah ChoiIm-Sook Song

Abstract

To overcome the low oral bioavailability of morin, a mixed micelle formulation with pharmaceutical excipients that facilitate solubilization and modulate P-glycoprotein (P-gp) was developed and evaluated in vitro and in vivo rats. Morin-loaded mixed micelle formulation with a morin-PluronicF127-Tween80 ratio of 1 : 10 : 0.02 (w/w/w) was prepared by a thin-film hydration method. The solubility, size distribution, drug encapsulation efficiency, and percent drug loading of the formulation were characterized. Subsequently, in vivo pharmacokinetic parameters of morin loaded in a PluronicF127 and Tween80 mixed-micelle formulation were investigated in rats. Absolute bioavailability of morin was dramatically increased by the oral administration of morin-loaded PluronicF127 and Tween80 mixed micelle from 0.4% to 11.2% without changing the systemic clearance and half-life. In Caco-2 cells, absorption permeability of morin from the novel formulation was increased 3.6-fold compared with that of morin alone. P-gp inhibition by cyclosporine A (CsA) increased absorptive permeability of morin 2.4-fold but decreased the efflux of morin by 52%, which was consistent with increased plasma concentration of morin in the pretreatment of CsA in rats. ...Continue Reading

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Jan 23, 2016·International Journal of Pharmaceutics·Melissa GuadaMaria J Blanco-Prieto
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