Valproic Acid induces CYP3A4 and MDR1 genes expression by activation of Constitutive Androstane Receptor and Pregnane X Receptor pathways

نویسندگان

  • Lukas Cerveny
  • Lucie Svecova
  • Eva Anzenbacherova
  • Radim Vrzal
  • Frantisek Staud
  • Zdenek Dvorak
  • Jitka Ulrichova
  • Pavel Anzenbacher
  • Petr Pavek
چکیده

Department of Pharmacology and Toxicology, Faculty of Pharmacy in Hradec Kralove, Charles University in Prague, Hradec Kralove (L.C., L.S., F.S., P.P.), Institute of Medical Chemistry and Biochemistry (E.A., R.V., Z.D., J.U.), and Department of Pharmacology (P.A.), Faculty of Medicine, Palacky University, Olomouc, Czech Republic DMD Fast Forward. Published on March 28, 2007 as doi:10.1124/dmd.106.014456

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Valproic acid induces CYP3A4 and MDR1 gene expression by activation of constitutive androstane receptor and pregnane X receptor pathways.

In our study, we tested the hypothesis whether valproic acid (VPA) in therapeutic concentrations has potential to affect expression of CYP3A4 and MDR1 via constitutive androstane receptor (CAR) and pregnane X receptor (PXR) pathways. Interaction of VPA with CAR and PXR nuclear receptors was studied using luciferase reporter assays, real-time reverse transcriptase polymerase chain reaction (RT-P...

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Differential regulation of hepatic CYP2B6 and CYP3A4 genes by constitutive androstane receptor but not pregnane X receptor.

Accumulated evidence suggests that cross-talk between the pregnane X receptor (PXR) and the constitutive androstane receptor (CAR) results in shared transcriptional activation of CYP2B and CYP3A genes. Although most data imply symmetrical cross-regulation of these genes by rodent PXR and CAR, the actual selectivities of the corresponding human receptors are unknown. The objective of this study ...

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تاریخ انتشار 2007