Determination and pharmacokinetic study of four lignans in rat plasma after oral administration of an extract of Valeriana amurensis by ultra‐high performance liquid chromatography with tandem mass spectrometry
2016
Xue, Juan | Mi, Yingying | Wang, Zhibin | Sun, Yichun | Wu, Qiong | Wang, Changfu | Zhang, Hongwei | Yang, Xin | Kuang, Haixue | Wang, Qiuhong
A selective and sensitive ultra‐high performance liquid chromatography with tandem mass spectrometry method was developed and validated for the determination and pharmacokinetic study of (+)‐8‐hydroxypinoresinol‐4’‐O‐β ‐D‐glucopyranoside, prinsepiol‐4‐O‐β‐D‐glucopyranoside, (+)‐pinoresinol‐4,4’‐di‐O‐β‐D‐glucopyranoside, and (−)‐massoniresinol 3α‐O‐β‐D‐glucopyranoside in rat plasma after the oral administration of a Valeriana amurensis extract. The analytes and ethyl 4‐hydroxybenzoate (internal standard) were separated on a Waters ACQUITY UPLC HSS T3 chromatographic column. The detection was performed on a triple quadrupole tandem mass spectrometer in multiple reaction monitoring mode using an electrospray ionization source operating in negative ionization mode. The linear ranges (ng/mL) of the standard curves were 0.39–154.00, 0.62–244.70, 0.50–198.60, and 0.34–134.50 for (+)‐8‐hydroxypinoresinol‐4’‐O‐β‐D‐glucopyranoside, prinsepiol‐4‐O‐β‐D‐glucopyranoside, (+)‐pinoresinol‐4,4’‐di‐O‐β‐D‐glucopyranoside, and (−)‐massoniresinol 3α‐O‐β‐D‐glucopyranoside, respectively. The inter‐ and intra‐day precisions were less than 11.0%, the accuracies were between −5.9 and 7.7%, and the extraction recoveries of the four analytes were > 81.2% from rat plasma. The method was successfully applied to a pharmacokinetic study of the four analytes after oral administration of a Valeriana amurensis extract to rats. The developed method has the potential for pharmacokinetic analysis and to provide additional information in the clinical application of Valeriana amurensis.
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