| http://purl.uniprot.org/citations/23578392 | http://www.w3.org/1999/02/22-rdf-syntax-ns#type | http://purl.uniprot.org/core/Journal_Citation |
| http://purl.uniprot.org/citations/23578392 | http://www.w3.org/2000/01/rdf-schema#comment | "The constitutive androstane receptor (CAR) controls the expression of drug-metabolizing enzymes and regulates hepatocyte proliferation. Studies with transgenic mice with an early postnatal conditional hepatocyte-specific knockout of the β-catenin gene Ctnnb1 revealed that β-catenin deficiency decreases the magnitude of induction of drug-metabolizing enzymes by CAR activators, abrogates zonal differences in the hepatocytes' susceptibility to these compounds, and impacts on hepatocyte proliferation. These data, however, do not allow distinguishing between effects caused by β-catenin deficiency during postnatal liver development and acute effects of β-catenin deficiency in the adult animal at the time point of CAR activation. Therefore, CAR activation was now studied in a different mouse model allowing for the hepatocyte-specific knockout of β-catenin in adult mice. Treatment of these mice with 3mg/kg body weight of the model CAR activator 1,4-bis-[2-(3,5-dichloropyridyloxy)]benzene (TCPOBOP) confirmed previous findings related to the coordinate regulation of drug metabolism by β-catenin and CAR. More importantly, the present study clarified that the impact of β-catenin signaling on CAR-mediated enzyme induction in the liver is not merely due to developmental defects caused by a postnatal lack of β-catenin, but depends on the presence of β-catenin at the time point of xenobiotic treatment. The study also revealed interesting differences between the two mouse models: hepatic zonation of TCPOBOP-dependent induction of drug-metabolizing enzymes was restored in mice with late knockout of β-catenin, and the strong proliferative response of female mice was exclusively abolished when using animals with a late β-catenin knockout. This suggests a β-catenin-dependent postnatal priming of hepatocytes during postnatal liver development, later affecting the proliferative response of adult animals to CAR-activating xenobiotics."xsd:string |
| http://purl.uniprot.org/citations/23578392 | http://purl.org/dc/terms/identifier | "doi:10.1016/j.tox.2013.03.019"xsd:string |
| http://purl.uniprot.org/citations/23578392 | http://purl.uniprot.org/core/author | "Singh Y."xsd:string |
| http://purl.uniprot.org/citations/23578392 | http://purl.uniprot.org/core/author | "Braeuning A."xsd:string |
| http://purl.uniprot.org/citations/23578392 | http://purl.uniprot.org/core/author | "Ganzenberg K."xsd:string |
| http://purl.uniprot.org/citations/23578392 | http://purl.uniprot.org/core/date | "2013"xsd:gYear |
| http://purl.uniprot.org/citations/23578392 | http://purl.uniprot.org/core/name | "Toxicology"xsd:string |
| http://purl.uniprot.org/citations/23578392 | http://purl.uniprot.org/core/pages | "113-121"xsd:string |
| http://purl.uniprot.org/citations/23578392 | http://purl.uniprot.org/core/title | "The time point of beta-catenin knockout in hepatocytes determines their response to xenobiotic activation of the constitutive androstane receptor."xsd:string |
| http://purl.uniprot.org/citations/23578392 | http://purl.uniprot.org/core/volume | "308"xsd:string |
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