Characterization of metabolism of (+)-praeruptorin B and (+)-praeruptorin E in human and rat liver microsomes by liquid chromatography coupled with ion trap mass spectrometry and time-of-flight mass spectrometry

2011 ◽  
Vol 25 (6) ◽  
pp. 719-730 ◽  
Author(s):  
Yue-Lin Song ◽  
Ru Yan ◽  
Wang-Hui Jing ◽  
Hai-Yu Zhao ◽  
Yi-Tao Wang
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Rat Liver ◽  
Ion Trap ◽  
Liver Microsomes ◽  
Time Of Flight ◽  
Ion Trap Mass Spectrometry ◽  
Rat Liver Microsomes ◽  
Flight Mass Spectrometry

scholarly journals Metabolism studies of paeoniflorin in rat liver microsomes by ultra-performance liquid chromatography coupled with hybrid quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF-MS/MS)

2018 ◽  
Vol 5 (10) ◽  
pp. 180759
Author(s):  
L. J. Zhu ◽  
S. S. Sun ◽  
Y. X. Hu ◽  
Y. F. Liu
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Rat Liver ◽  
Metabolic Pathways ◽  
Liver Microsomes ◽  
Time Of Flight ◽  
Ultra Performance Liquid Chromatography ◽  
Rat Liver Microsomes ◽  
Flight Mass Spectrometry ◽  
Tof Ms

To explore metabolism mechanism of paeoniflorin in the liver and further understand intact metabolism process of paeoniflorin, a rapid, convenient and effective assay is described using ultra-performance liquid chromatography coupled with hybrid quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF-MS/MS). The strategy was confirmed in the following primary processes: firstly, different concentration of paeoniflorin, rat liver microsomes, coenzymes and different incubated conditions were optimized to build a biotransformation model of rat liver microsomes in vitro by high performance liquid chromatography with diode array detection (HPLC-DAD); secondly, the metabolites of paeoniflorin in rat liver microsomes were detected and screened using UPLC-Q-TOF-MS/MS by comparing the total ion chromatogram (TIC) of the experimental group with those of control groups; finally, the molecular formulae and corresponding chemical structures of paeoniflorin metabolites were identified by comparing the MS and MS/MS spectra with the self-constructed database and simulation software. Based on this analytical strategy, 20 metabolites of paeoniflorin were found and 6 metabolites (including four new compounds) were tentatively identified. It was shown that hydrolysis and oxidation were the major metabolic pathways of paeoniflorin in rat liver microsomes, and the main metabolic sites were the structures of pinane and the ester bond. These findings were significant for a better understanding of the metabolism of paeoniflorin in rat liver microsomes and the proposed metabolic pathways of paeoniflorin might provide fundamental support for the further research in the pharmacological mechanism of Paeoniae Radix Rubra (PRR).

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