Metabolic profiling comparison of isovitexin in normal and kidney stone model rats by ultra‐high‐performance liquid chromatography coupled to quadrupole time‐of‐flight mass spectrometry

Abstract

Isovitexin, a bioactive flavonoid constituent isolated from Desmodii Styracifolii, is considered an adjuvant for antiurolithiasis diseases. In this study, an ultra‐high‐performance liquid chromatography coupled with hybrid triple quadruple time‐of‐flight mass spectrometry method was developed to characterize and compare the metabolic profiling of isovitexin experimented on normal and kidney stone model rats. The comparative research indicated that 28 metabolites (18 phase I and 10 phase II) in normal rats and 33 metabolites (20 phase I and 13 phase II) in kidney stone model rats were initially identified. The results of relative quantitative determination reflected that the contents of metabolites produced by deglycosylation, reduction, and isomerization in kidney stone model rats were greater than those in healthy rats. Instead, the levels of oxidative and dehydrogenated metabolites in normal groups were higher than those in kidney stone model groups. The results of this study are valuable and important for understanding the metabolic process of isovitexin in clinical application, and especially the metabolism study in kidney stone model rats could provide a beneficial reference for the further search of effective substances associated with the treatment of kidney stones.

Plant Metabolomics as a Tool for Detecting Adulterants in Edible Plant: A Case Study of Allium ursinum

“…On the other hand, in the A. maculatum extract, the main fragment ions observed in the positive ions MS/MS spectrum were at m/z 415.1026 ([M+H-H 313.0706 ([ 0,2 X] + ) and 283.0603 ([ 0,1 X] + ). Despite these differences in the MS/MS spectra of isovitexin in two extracts examined, that could be attributed to the matrix effect, overall fragmentation patterns, together with presence of [M+H-4H 2 O] + ion at m/z 361,0703 and small intensity ion [Y 0 ] + at m/z 271,0603, as well absence of [ 0,3 X] + ion indicated 6-C-glycoside of apigenin [34][35][36][37].…”

“…Where appropriate, biomarkers were also identified by their retention times, UV-vis and MS spectral data obtained from LC-DAD-MS (/MS) measurements. All spectral data were then compared with those from literature reports [30][31][32][33][34][35][36][37][38][39].…”