Article

LC determination and pharmacokinetic study of vitexin-4″- O -glucoside in rat plasma after oral administration

School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian, 116600, China.
Natural product research (Impact Factor: 0.92). 08/2011; 26(10):962-7. DOI: 10.1080/14786419.2010.535165
Source: PubMed

ABSTRACT

A simple and specific high-performance liquid chromatography (HPLC) method was developed for the pharmacokinetic study of vitexin-4″-O-glucoside (VOG) in rats after oral administration. The plasma samples were deproteinised with methanol after the addition of an internal standard, hesperidin. HPLC analysis was performed on a Diamonsil C(18) analytical column, using methanol -0.5% aqueous phosphoric acid (45:55, v/v) as the mobile phase with ultraviolet detection at 330 nm. The calibration curve was linear over the range of 5-450 µg mL(-1) in rat plasma. The average extraction recovery of VOG was 98.74% ± 0.44%, and the relative standard deviations of the intra- and inter-day precisions were not greater than 4.1% and 2.0%, respectively. The validated method was successfully applied during a pharmacokinetic study in rats after oral administration of VOG at different doses, and all the results indicated that the pharmacokinetics of VOG in rats obeyed nonlinear processes.

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