Publication Cover
Xenobiotica
the fate of foreign compounds in biological systems
Volume 46, 2016 - Issue 9
601
Views
17
CrossRef citations to date
0
Altmetric
General Xenobiochemistry

Evaluation of cytochrome P450 inductions by anti-epileptic drug oxcarbazepine, 10-hydroxyoxcarbazepine, and carbamazepine using human hepatocytes and HepaRG cells

, , , , , & show all
Pages 765-774 | Received 08 Sep 2015, Accepted 08 Nov 2015, Published online: 29 Dec 2015
 

Abstract

  1. Anti-epileptic drug oxcarbazepine is structurally related to carbamazepine, but has reportedly different metabolic pathway. Auto-induction potentials of oxcarbazepine, its pharmacologically active metabolite 10-hydroxyoxcarbazepine and carbamazepine were evaluated by cytochrome P450 (CYP) 1A2, CYP2B6 and CYP3A4 mRNA levels and primary metabolic rates using human hepatocytes and HepaRG cells.

  2. For the CYP1A2 the induction potential determined as the fold change in mRNA levels was 7.2 (range: 2.3–11.5) and 10.0 (6.2–13.7) for oxcarbazepine and carbamazepine, respectively, while 10-hydroxyoxcarbazepine did not induce. The fold change in mRNA levels for CYP2B6 was 11.5 (3.2–19.3), 7.0 (2.5–10.8) and 14.8 (3.1–29.1) for oxcarbazepine, 10-hydroxyoxcarbazepine and carbamazepine, respectively. The fold change for CYP3A4 induction level by oxcarbazepine, 10-hydroxyoxcarbazepine and carbamazepine was 3.5 (1.2–7.4), 2.7 (0.8–5.7) and 8.3 (3.5–14.5), respectively. The data suggest lower induction potential of oxcarbazepine and 10-hydroxyoxcarbazepine relative to carbamazepine. The results in HepaRG cells showed similar trend as the human hepatocytes.

  3. After incubation for 72 h in hepatocytes and HepaRG cells, auto-induction was evident for only carbamazepine metabolism. The 10-keto group instead of double bond at C10 position is evidently a determinant factor for limited auto-induction of P450 enzymes by oxcarbazepine.

Declaration of interest

All authors contributed to the writing of the draft manuscript. All authors read and approved the final manuscript. This study was funded by Tokyo University of Science.

IS is a student of Tokyo University of Science and an employee of Novartis Pharma K.K., NM is a lecturer of Showa Pharmaceutical University, AK is a student of Tokyo University of Science, JK is an employee of Novartis Institutes for Biomedical Research, SI is a research student of Showa Pharmaceutical University and an employee of Novartis Pharma K.K., HY is a professor of Showa Pharmaceutical University, TH is a professor of Tokyo University of Science.

Log in via your institution

Log in to Taylor & Francis Online

PDF download + Online access

  • 48 hours access to article PDF & online version
  • Article PDF can be downloaded
  • Article PDF can be printed
USD 65.00 Add to cart

Issue Purchase

  • 30 days online access to complete issue
  • Article PDFs can be downloaded
  • Article PDFs can be printed
USD 897.00 Add to cart

* Local tax will be added as applicable

Related Research

People also read lists articles that other readers of this article have read.

Recommended articles lists articles that we recommend and is powered by our AI driven recommendation engine.

Cited by lists all citing articles based on Crossref citations.
Articles with the Crossref icon will open in a new tab.