Pharmacokinetics, bioavailability and metabolism of rhaponticin in rat plasma by UHPLC-Q-TOF/MS and UHPLC-DAD-MSn

作者：Zhao, Ying-Yong^*; Su, Qi; Cheng, Xian-Long; Tan, Xiao-Jie; Bai, Xu; Lin, Rui-Chao

来源：Bioanalysis, 2012, 4(6): 713-723.

DOI：10.4155/BIO.12.24

• TANDEM MASS-SPECTROMETRY
• MICELLAR ELECTROKINETIC CHROMATOGRAPHY
• HUMAN INTESTINAL BACTERIA
• NITRIC-OXIDE PRODUCTION
• RHEUM-UNDULATUM
• ACTIVE COMPONENTS
• RHUBARB
• STILBENES
• CONSTITUENTS
• IDENTIFICATION

Background: Rhaponticin (Rheum L.) demonstrates a variety of pharmacological activities, including antitumor, antithrombotic and antioxidant effect. However, there is no information describing the pharmacokinetics, bioavailability and metabolism of rhaponticin after intravenous administration. Results: UHPLC-Q-TOF/MS and UHPLC-multistage tandem MS methods were developed for the pharmacokinetics, bioavailability and metabolism of rhaponticin in rats. The metabolite of rhaponticin, rhapontigenin, a potent inhibitor of cytochrome P450, was confirmed by UHPLC-multistage tandem MS. The plasma profile of rhaponticin and rhapontigenin was determined by UHPLC-Q-TOF/MS. The results showed that rhaponticin was rapidly distributed and eliminated from rat plasma. The absolute oral bioavailability of rhaponticin was calculated to be 0.03%. The plasma concentrations of rhapontigenin rapidly increased and gradually eliminated after intravenous administration. Conclusion: The present pharmacokinetics, bioavailability and metabolism studies of rhaponticin will provide helpful information for development of suitable dosage forms and clinical references on rational administration.

• 出版日期2012-3
• 单位西北大学