Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2017 Dec 7;7:17190. doi: 10.1038/s41598-017-17225-0

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© The Author(s) 2017

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

PMC Copyright notice

Changes of metapristone metabolism rate induced by male and female liver microsomes in the presence and absence of CYP inhibitors. (A) No significant differences in metabolism rate of metapristone (9 µM) between controls and CYP450 inhibitor sulfaphenazole (CYP2C9), quinidine (CYP2D6), or ticlopidine (CYP2C19); whereas CYP450 inhibitor ketoconazole (CYP1A2) and naphthoflavone (CYP3A4) significantly prevented metapristone from degradation in comparison with the controls during the 120 min incubation. The data also show statistically significant differences in metapristone metabolism between female and male liver microsomes in the presence of the five inhibitors. (B) α-naphthoflavone produced concentration-dependent prevention against metapristone metabolism induced by human CYP3A4; (C) ketoconazole produced concentration-dependent prevention against metapristone metabolism induced by human CYP1A2. (D) up-regulated activities of rat liver CYP1A2 and CYP3A4 after 7-day administration of metapristone. Data represent the mean ± s.d. (n = 3); *P < 0.05; **P < 0.01 of statistically significant difference (Student t test).