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Metabolite profiling of l ‐isocorypalmine in rat urine, plasma, and feces after oral administration using high performance liquid chromatography coupled to Fourier transform ion cyclotron resonance mass spectrometry
Author(s) -
Li Yiran,
Zhang Teng,
Huai Jiaxin,
Cheng Congcong,
Xie Linlin,
Wang Siqi,
Dai Ronghua
Publication year - 2019
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.201800745
Subject(s) - chemistry , glucuronidation , chromatography , metabolite , mass spectrometry , glucuronide , fourier transform ion cyclotron resonance , demethylation , tandem mass spectrometry , urine , biochemistry , microsome , enzyme , gene expression , dna methylation , gene
l ‐Isocorypalmine, an active alkaloid compound isolated from Rhizoma Corydalis yanhusuo , has been reported to possess biological activity for treating cocaine use disorder. A high‐performance liquid chromatography coupled to Fourier transform ion cyclotron resonance mass spectrometry method was established for identification of the metabolites of l ‐isocorypalmine in urine, plasma and feces samples of rats after a single intragastric gavage of l ‐isocorypalmine at a dose of 15 mg/kg. As a result, a total of 21 metabolites (six phase І metabolites and fifteen phase II metabolites) were detected and tentatively identified by mass spectrometry and fragment ions from tandem mass spectrometry spectra. All metabolites were present in the urine samples, nine metabolites were found in the plasma samples and three metabolites were found in the feces samples. Results indicated that metabolic pathways of l ‐isocorypalmine included oxidation, dehydrogenation, demethylation, sulfate conjugation, and glucuronide conjugation. In addition, glucuronidation was the major metabolic reaction. Results of this investigation could provide significant experimental basis for efficacy, safety and action mechanism of l ‐isocorypalmine, which will be advantageous to new drug development for treating cocaine addiction.