Studies on intestinal transport of ginsenoside compatibility with Veratrum nigrum via Caco-2 cell monolayer model coupled with UPLC-ESI-MS method

Abstract

The Caco-2 cells have been recognized as effective tools to be applied to imitating the drug absorption in human intestine for the transport of drug. Herein, Caco-2 cell monolayer model was used to study the transport of the ginsenoside compatibility with Veratrum nigrum in different proportions. A specific high performance liquid chromatography-electrospray ionization-mass spectrometry(HPLC-ESI-MS) method was developed for the semiquantitative determination of ginsenoside in intestinal transport with Dioscin as an internal standard. For the Caco-2 model constructed, two influencing factors were investigated, including time and concentration. The results suggest that the absorption of ginsenoside Re, Rg1, Rb1, Rc, Rb2 and Rd are time- and concentration-dependent and the excretions of Rb1, Rc, Rb2 and Rd have a relatronship with some transport proteins. The bioavailability of the ginsenosides has reduced compared to the single Panax ginseng extract when compatibility with a certain amount of Veratrum nigrum.

Keywords

High performance liquid chromatography-electrospray ionization-mass spectroscopy(HPLC-ESI-MS) / Panax ginseng / Ginsenoside / Veratrum nigrum / Transport / Caco-2 cell monolayer model

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