# Detection and Characterization of the Metabolites of Ciwujianoside B in Rats Based on UPLC-Fusion Lumos Orbitrap Mass Spectrometry

## TL;DR

This study identifies and compares the metabolites of ciwujianoside B and hederasaponin B in rats, focusing on the role of sugar chains in their metabolism.

## Contribution

The study verifies the role of sugar chains in the metabolism of triterpenoid saponins by comparing ciwujianoside B and hederasaponin B.

## Key findings

- Over 40 metabolites were identified in feces, urine, and plasma of rats.
- Deglycosylation was the main metabolic reaction, accounting for about 50% of metabolites.
- Metabolic pathways included deglycosylation, acetylation, hydroxylation, glucuronidation, oxidation, and glycosylation.

## Abstract

We previously conducted a systematic study on the metabolic process and products of hederasaponin B in rats. We hypothesized that the sugar chain structures play a key role in the metabolism of triterpenoid saponins. To verify this hypothesis, we conducted metabolic research on ciwujianoside B ascribed to the same sugar chains and a distinct aglycone and compared it with hederasaponin B. Specifically, we collected feces, urine, and plasma of rats after gavage with ciwujianoside B and identified 42 metabolites by UPLC-Fusion Lumos Orbitrap mass spectrometry. Finally, ciwujianoside B metabolism and hederasaponin B metabolism were compared, reaching the following conclusions: (i) more than 40 metabolites were identified in both, with the majority of metabolites identified in feces; (ii) the corresponding metabolic pathways in vivo were basically similar, including deglycosylation, acetylation, hydroxylation, glucuronidation, oxidation, and glycosylation; and (iii) deglycosylation was considered the main metabolic reaction, and its metabolites accounted for approximately 50% of all metabolites. Overall, this study provides a foundation for further research on the metabolism of triterpenoid saponins.