A Link between cholesterol levels and phenobarbital induction of cytochromes P450

Ourlin, J. -C. and Handschin, C. and Kaufmann, M. and Meyer, U. A.. (2002) A Link between cholesterol levels and phenobarbital induction of cytochromes P450. Biochemical and Biophysical Research Communications, 291 (2). pp. 378-384.

PDF - Accepted Version
Available under License CC BY-NC-ND (Attribution-NonCommercial-NoDerivatives).


Official URL: http://edoc.unibas.ch/dok/A5258738

Downloads: Statistics Overview


Squalestatin1 (SQ1), a potent inhibitor of squalene synthase produced a dose-dependent induction of cytochromes P450 CYP2H1 and CYP3A37 mRNAs in chicken hepatoma cells. The effect of SQ1 was completely reversed by 25-hydroxycholesterol. Bile acids elicited an induction of CYP3A37 and CYP2H1 mRNA. Bile acids also reduced the phenobarbital induction of CYP2H1 but not of CYP3A37 mRNA. The effects of SQ1 and its reversal by 25-hydroxycholesterol and the effects of bile acids were reproduced in reporter gene assays with a phenobarbital-responsive enhancer unit of CYP2H1. These data suggest that an endogenous molecule related to cholesterol homeostasis regulates induction of drug-inducible CYPs.
Faculties and Departments:03 Faculty of Medicine > Departement Biomedizin > Associated Research Groups > Pharmakologie (Handschin)
05 Faculty of Science > Departement Biozentrum > Growth & Development > Growth & Development (Handschin)
UniBasel Contributors:Handschin, Christoph
Item Type:Article, refereed
Article Subtype:Research Article
Note:Publication type according to Uni Basel Research Database: Journal article
edoc DOI:
Last Modified:14 Nov 2017 14:41
Deposited On:22 Mar 2012 13:20

Repository Staff Only: item control page