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学科主题: 物理化学
题名: Determination of paeonol O-demethylation activities in vitro by ultra-performance liquid chromatography with MS detection (UPLC-MS)
作者: Liu HX(刘慧鑫) ;  Yang L(杨凌)
会议名称: 3rd asian pacific regional meeting of the international society for the study of xenobiotics
会议日期: 2009-5-10
出版日期: 2009-05-10
会议地点: 泰国
通讯作者: Yang ;  L
部门归属: 十八室
主办者: 国际药物代谢学会
摘要: O-demethylation of paeonol has been implicated as an important mechanism of paeonol elimination. To characterize paeonol metabolism by O-demethylation, a rapid and specific ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS) method was developed for the qualitative and quantitative determination of paeonol O-demethylation activity in human liver microsomes (HLMs). HLMs incubation system with paeonol resulted in the formation of a single product peak. Following the purification, this peak was confirmed as O-demethylated metabolite of paeonol (2,4-Dihydroxyacetophenone, DHA) by MS and NMR. The method was validated for the determination of DHA with respect to specificity, linearity, detection limit, recovery, stability, precision and accuracy. The chromatographic separation was achieved on a UPLC BEH C18 column (50 mm × 2.1 mm i.d., 1.7 μm), with phase of acetonitrile-water (ratio 30:70). Selective ion reaction (SIR) monitor was specific for paeonol, DHA and I.S.. The method was linear over the concentration range 0.5-100 μM for DHA in spiked HLMs. Acceptable precision and accuracy were obtained for concentrations over the standard curve range. DHA were stable at 4°C for at least 72 h in spiked liver microsomes samples. The method was successfully used to determine the kinetics of DHA activities toward paeonol in liver microsomes from different speices.
语种: 中文
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内容类型: 会议论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/113566
Appears in Collections:中国科学院大连化学物理研究所_会议论文

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Recommended Citation:
Liu HX,Yang L. Determination of paeonol O-demethylation activities in vitro by ultra-performance liquid chromatography with MS detection (UPLC-MS)[C]. 见:3rd asian pacific regional meeting of the international society for the study of xenobiotics. 泰国. 2009-5-10.
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