흰쥐에서 나린진이 타목시펜의 약물동태에 미치는 영향
Effect of Naringin on Tamoxifen Pharmacokinetics in Rats
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Abstract
The aim of this study is to investigate the effect of naringin on the pharmacokinetics of tamoxifen in rats. Tamoxifen (10 mg/kg) was administered orally 0.5 h and 3 days after oral administration of naringin (5 mg/kg). The plasma concentrations of tamoxifen were increased significantly by naringin compared to control. Absorption rate constant (Ka) of tamoxifen with naringin was increased significantly compared to that of the control. The areas under the plasma concentration-time curve (AUC) and the peak concentrations (Cmax) of tamoxifen with naringin were significantly higher than those of the control. Consequently, the relative bioavailability (R.B%) of tamoxifen with naringin was 2-3-fold higher than the control, and absolute bioavailability (A.B%) of tamoxifen were significantly higher (p<0.05 with coadministration,p<0.01 with pretreatment) than those of the control. The increased bioavailability of tamoxifen in rats with naringin might be associated with the inhibition by naringin of an efflux pump P-glycoprotein and the first-pass metabolizing enzyme CYP3A4.
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