Citation:
WANG En-Peng, DU Lian-Yun, ZHU Shuang, HAN Yan-Yan, LIU Shu-Ying, CHEN Chang-Bao, LI Ping-Ya. Investigation of Pharmacokinetic Behavior of Depression Rats Caused by UVB Radiation after Oral Administration of 20(S)-Ginsenoside Rg3 by Ultra High Performance Liquid Chromatography-Tandem Mass Spectrometry[J]. Chinese Journal of Analytical Chemistry,
;2021, 49(4): 618-627.
doi:
10.19756/j.issn.0253-3820.211002
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A novel approach was developed for simultaneous determination of 20(S)-ginsenoside Rg3 (G-Rg3) and its main metabolite 20(S)-ginsenoside Rh2 (G-Rh2) in rats plasma by UHPLC-QQQ MS to compare the pharmacokinetic behavior of normal and UVB-induced depression model after oral administration of G-Rg3. In this method, an Ascentis® Express C18 chromatographic column (5 mm×3.0 mm, 2.7 μm) was used for qualitative and quantitative analysis of G-Rg3 and G-Rh2 under gradient elution with 0.1% formic acid in water-acetonitrile as the mobile phase. Simultaneously, the flow rate was 0.3 mL/min and the injection volume of sample solution was 5 μL. The MS analysis was operated in multiple-reaction monitoring (MRM) mode using electrospray ionization (ESI) under negative ion mode. With 20(S)-ginsenoside Rb1 (G-Rb1) as internal standard, G-Rg3 and G-Rh2 were quantitatively analyzed. The ions for quantification were m/z 783.5/621.4, 621.4/459 and 1107.6/954.5, respectively. The results showed that the intra-day and inter-day precisions, recovery, matrix effect and stability could meet the pharmacokinetic analysis requirement, and the whole analysis procedure could be completed in 10 minutes. Both G-Rg3 and G-Rh2 had a good linear relationship in the concentration ranges of 2.0-2500 ng/mL and 2.0-2500 ng/mL (R2>0.9907). The results indicated that the metabolic process of G-Rg3 conformed to a two-compartment pharmacokinetic model after single oral administration in the normal and model groups. The t1/2α were (0.35±0.116) and (1.954±0.609) h, the t1/2β were (66.103±6.425) and (52.496±33.639) h, the AUC(0-t) were (346.75±14.108) and (551.374±117.557) mg·L/h, and the AUC(0-t) were (497.66±39.673) and (694.523±213.077) mg·L/h. There were significant differences in pharmacokinetic parameters between the two groups (p<0.01), which was concluded that the internal environment of depression model rats might have been changed by UVB radiation, might also affecting the absorption and metabolism of G-Rg3. This method was simple, rapid, selective and sensitive, and could be used for the pharmacokinetic analysis of Rg3 and Rh2. More important, it was suitable for pharmacokinetic study of G-Rg3 in vivo.
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