Dataset Information


Pregnane X receptor prevents hepatorenal toxicity from cholesterol metabolites.

ABSTRACT: Efficient detoxification and clearance of cholesterol metabolites such as oxysterols, bile alcohols, and bile acids are critical for survival because they can promote liver and cardiovascular disease. We report here that loss of the nuclear xenobiotic receptor PXR (pregnane X receptor), a regulator of enterohepatic drug metabolism and clearance, results in an unexpected acute lethality associated with signs of severe hepatorenal failure when mice are fed with a diet that elicits accumulation of cholesterol and its metabolites. Induction of a distinct drug clearance program by a high-affinity ligand for the related nuclear receptor, the constitutive androstane receptor, does not overcome the lethality, indicating the unique requirement of PXR for detoxification. We propose that the PXR signaling pathway protects the body from toxic dietary cholesterol metabolites, and, by extension, PXR ligands may ameliorate human diseases such as cholestatic liver diseases and the associating acute renal failure.


PROVIDER: S-EPMC548561 | BioStudies | 2005-01-01T00:00:00Z

REPOSITORIES: biostudies

Similar Datasets

1000-01-01 | S-EPMC548592 | BioStudies
2011-01-01 | S-EPMC3109201 | BioStudies
1000-01-01 | S-EPMC5811017 | BioStudies
2003-01-01 | S-EPMC153063 | BioStudies
2007-01-01 | S-EPMC2859448 | BioStudies
1000-01-01 | S-EPMC3740860 | BioStudies
2001-01-01 | S-EPMC30660 | BioStudies
2017-01-01 | S-EPMC5402287 | BioStudies
2019-01-01 | S-EPMC6361121 | BioStudies
2020-01-01 | S-EPMC7602492 | BioStudies