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Current Pharmaceutical Analysis

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ISSN (Print): 1573-4129
ISSN (Online): 1875-676X

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Research Article

The Metabolism Study of Oleraisoquinoline in Rats Using Ultrahigh- performance Liquid Chromatography-electrospray Coupled with Quadrupole Time-of-flight Mass Spectrometry and its Bioactivities

Author(s): Peishan Liu, Rui Sun, Jiayin Tian, Fan He* and Xixiang Ying*

Volume 19, Issue 9, 2023

Published on: 07 November, 2023

Page: [695 - 703] Pages: 9

DOI: 10.2174/1573412919666230816090927

Price: $65

Abstract

Objective: This study aimed to investigate the main metabolites and metabolic pathways of oleraisoquinoline in rats, a new alkaloid isolated from Portulaca oleracea L., and test its antioxidation and anticholinesterase effects.

Methods: Ultra-high-performance liquid chromatography-electrospray coupled with quadrupole time-of-flight mass spectrometry (UHPLC-ESI-Q-TOF/MS) was applied to study the metabolism of oleraisoquinoline. Furthermore, 1,1-diphenyl-2-picrylhydrazyl assay and modified Ellman’s method were used to test the antioxidation and anticholinesterase effects of oleraisoquinoline, respectively.

Results: The metabolism results of oleraisoquinoline showed, after its administration through the tail vein of rats, 4 metabolites in the plasma samples, 17 metabolites in the urine sample, and 2 metabolites in the feces sample. The main metabolic pathways were hydrolyzation, oxidation, hydroxylation, sulfonation, glucuronidation, acetylation, and methylation. Additionally, IC50 values of antioxidant and anticholinesterase activities were 13.819 ± 0.005 μM and 10.551 ± 0.069 μM, respectively.

Conclusion: 21 metabolites were found in the rat’s plasma, urine, and feces samples, and the metabolic pathways included hydrolyzation, oxidation, hydroxylation, sulfonation, glucuronidation, acetylation, and methylation; among them, sulfonation was the main metabolic reaction. Meanwhile, oleraisoquinoline also showed extremely good antioxidant and anticholinesterase activities.

Keywords: Portulaca oleracea L., oleraisoquinoline, metabolism, ultra-high-performance liquid chromatographyelectrospray, bioactivity, hydrolyzation.

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