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Untargeted Metabolomics from Biological Sources Using Ultraperformance Liquid Chromatography-High Resolution Mass Spectrometry UPLC-HRMS
Published on: May 20, 2013
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Determination of Schaftoside and Isoschaftoside in Rat Plasma Utilizing UPLC-MS/MS
Jianbo Li1, Runrun Wang2, Mengmeng Shao3
1The Second Affiliated Hospital Zhejiang University School of Medicine Linping Campus, Hangzhou, China.
Biomedical Chromatography : BMC
|May 12, 2025
Summary
This study determined the pharmacokinetics and bioavailability of schaftoside and isoschaftoside in rats. The compounds exhibited low oral bioavailability, with schaftoside showing 0.95% and isoschaftoside 0.22%.
Area of Science:
- Pharmacology
- Analytical Chemistry
Background:
- Schaftoside and isoschaftoside are bioactive compounds with potential therapeutic applications.
- Understanding their pharmacokinetic profiles is crucial for drug development.
Purpose of the Study:
- To evaluate the pharmacokinetics, absolute bioavailability, and plasma concentrations of schaftoside and isoschaftoside in rats.
- To establish a reliable analytical method for quantifying these compounds in rat plasma.
Main Methods:
- An Ultra-Performance Liquid Chromatography-Tandem Mass Spectrometry (UPLC-MS/MS) method was developed and validated for sample analysis.
- Plasma samples were prepared by protein precipitation using chilled methanol.
- Compounds were separated on a UPLC HSS T3 column and detected using electrospray ionization in positive ion mode with multiple reaction monitoring.
Main Results:
- The UPLC-MS/MS method demonstrated excellent linearity (r > 0.99) over the concentration range of 1-2000 ng/mL.
- Significant differences in AUC(0-t) were observed between schaftoside and isoschaftoside after intravenous and oral administration.
- Comparable half-lives (t1/2) were found for both compounds.
- The absolute bioavailability was determined to be 0.95% for schaftoside and 0.22% for isoschaftoside in rat plasma.
Conclusions:
- Schaftoside and isoschaftoside exhibit low absolute oral bioavailability in rats.
- The developed UPLC-MS/MS method is suitable for pharmacokinetic studies of these compounds.
- Further research may be needed to enhance the oral delivery and efficacy of schaftoside and isoschaftoside.
