| Literature DB >> 20089387 |
C-K Wan1, A K Tse, Z-L Yu, G-Y Zhu, H Wang, D W F Fong.
Abstract
We studied the effects of schisandrol A (SCH) and gomisin A (GOM), two of the main bioactive components of Fructus Schisandrae chinensis, on cytochrome P450-3A4 (CYP3A4) activity and cellular glutathione (GSH) level. In a cell-free system both SCH and GOM inhibited CYP3A4 activity with IC(50) values of 32.02 microM and 1.39 microM, respectively. SCH or GOM at concentrations up to 100 microM did not alter cellular GSH level in regular HepG2 cells and P-glycoprotein overexpressing HepG2-DR cells. Since SCH and GOM may reverse multidrug resistance (MDR) by impeding the activity of P-glycoprotein, a membrane xenobiotic exporter, SCH or GOM could affect cellular drug metabolism in addition to drug uptake. (c) 2009 Elsevier GmbH. All rights reserved.Entities:
Mesh:
Substances:
Year: 2010 PMID: 20089387 DOI: 10.1016/j.phymed.2009.12.005
Source DB: PubMed Journal: Phytomedicine ISSN: 0944-7113 Impact factor: 5.340