Identification of poliumoside metabolites in rat plasma, urine, bile, and intestinal bacteria with UPLC/Q-TOF-MS  

作　　者：QIAN Hao YU Fang-Jun LU Dan-Yi WU Bao-Jian ZHANG Xing-Wang WANG Huan MA Zhi-Guo QIAN Hao;YU Fang-Jun;LU Dan-Yi;WU Bao-Jian;ZHANG Xing-Wang;WANG Huan;MA Zhi-Guo(College of Pharmacy, Jinan University)

机构地区：[1]College of Pharmacy, Jinan University

出　　处：《Chinese Journal of Natural Medicines》2018年第11期871-880,共10页中国天然药物（英文版）

摘　　要：Poliumoside is representative of phenylethanoid glycosides, which are widely found in many plants. Poliumoside is also regarded as the main active component of Callicarpa kwangtungensis Chun(CK), though its oral bioavailability in rat is extremely low(0.69%) and its in vivo and in vitro metabolism has not yet been systematically investigated. In the present study, an ultra performance liquid chromatography/quadrupole time-of-flight mass spectrometry(UPLC/Q-TOF-MS) method was employed to identify the metabolites and investigate the metabolic pathways of poliumoside in rat after oral administration 1.5 g·kg–1 of poliumoside. As a result, a total of 34 metabolites(30 from urine, 17 from plasma, and 4 from bile) and 9 possible metabolic pathways(rearrangment, reduction, hydration, hydrolyzation, dehydration, methylation, hydroxylation, acetylation, and sulfation) were proposed in vivo. The main metabolite, acteoside, was quantified after incubated with rat intestinal bacteria in vitro. In conclusion, the present study systematically explored the metabolites of poliumoside in vivo and in vitro, proposing metabolic pathways that may be significant for further metabolic studies of poliumoside.Poliumoside is representative of phenylethanoid glycosides, which are widely found in many plants. Poliumoside is also regarded as the main active component of Callicarpa kwangtungensis Chun（CK）, though its oral bioavailability in rat is extremely low（0.69%） and its in vivo and in vitro metabolism has not yet been systematically investigated. In the present study, an ultra performance liquid chromatography/quadrupole time-of-flight mass spectrometry（UPLC/Q-TOF-MS） method was employed to identify the metabolites and investigate the metabolic pathways of poliumoside in rat after oral administration 1.5 g·kg–1 of poliumoside. As a result, a total of 34 metabolites（30 from urine, 17 from plasma, and 4 from bile） and 9 possible metabolic pathways（rearrangment, reduction, hydration, hydrolyzation, dehydration, methylation, hydroxylation, acetylation, and sulfation） were proposed in vivo. The main metabolite, acteoside, was quantified after incubated with rat intestinal bacteria in vitro. In conclusion, the present study systematically explored the metabolites of poliumoside in vivo and in vitro, proposing metabolic pathways that may be significant for further metabolic studies of poliumoside.

关 键 词：Poliumoside RAT METABOLITES Intestinal bacteria UPLC/Q-TOF-MS 

分 类 号：R965[医药卫生—药理学]