Jiang Shan, Li Haoran, Yang Ailin, Zhang Hongbing, Dong Pingping, Dong Fan, Dai Long, Limin Wu* and Zhang Jiayu* Pages 1 - 13 ( 13 )
Background: Astilbin, a dihydroflavonoid compound widely found in plants, exhibits a variety of pharmacological activities and biological effects. However, little is known about the metabolism of this active compound in vivo, which is very helpful for elucidating the pharmacodynamic material basis and application of astilbin.
Objective: To establish a rapid profiling and identification method for metabolites in rat urine, faeces and plasma using a UHPLC-Q-Exactive mass spectrometer in negative ion mode.
Methods: In this study, a simple and rapid systematic strategy and 7 metabolite templates, which were established based on previous reports, were utilized to screen and identify astilbin metabolites.
Results: As a result, a total of 71 metabolites were detected and characterized, among which 32 metabolites were found in rat urine, while 27 and 38 metabolites were characterized from rat plasma and faeces, respectively. These metabolites were presumed to be generated through ring cleavage, sulfation, dehydrogenation, methylation, hydroxylation, glucuronidation, dehydroxylation and their composite reactions.
Conclusion: This study illustrated the capacity of the sensitive UHPLC-Q-Exactive mass spectrometer analytical system combined with the data-mining methods to rapidly elucidate the unknown metabolism. Moreover, the comprehensive metabolism study of astilbin provided an overall metabolic profile, which will be of great help in predicting the in vivo pharmacokinetic profiles and understanding the action mechanism of this active ingredient.
Astilbin, metabolites, UHPLC-Q-Exactive mass spectrometer, data-mining methods, biological activities, dihydroflavonol glycosides.
School of Pharmacy, BIN ZHOU Medical University, Yantai 264003, School of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250300, School of Pharmacy, BIN ZHOU Medical University, Yantai 264003, Shandong Institute for Food and Drug Control, Jinan Shandong 250101, School of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250300, School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 102488, School of Pharmacy, BIN ZHOU Medical University, Yantai 264003, Department of Pharmacy, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021,, School of Pharmacy, BIN ZHOU Medical University, Yantai 264003