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Farnesoid X receptor regulates cystathionase
Date:5/13/2009

of 6E-CDCA regulates CSE expression in normal mice, therefore the authors have investigated whether acute administration of an FXR ligand effectively modulates CSE expression in CCl4 treated mice. The author demonstrated that CSE liver expression was down-regulated in an animal model of liver damage induced by CCl4 and that treatment with 6E-CDCA resulted in a robust induction of CSE expression only in FXR +/+ mice

The reduction of CSE expression in the cirrhotic liver contributes to the development of increased intrahepatic resistance and portal hypertension. The authors therefore investigated whether in vivo administration of an FXR ligand modulates hepatic resistance in cirrhotic rats.

In conclusion, they have shown that CSE is an FXR-regulated gene. By linking the deficiency of CSE to the FXR activity the present study provides a new molecular explanation to the pathophysiology of portal hypertension. It also proposes the concept that FXR agonists might correct for the altered generation of endogenous hepatic vasodilators that takes place in chronic liver diseases.


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Contact: Lin Tian
wjg@wjgnet.com
86-105-908-0039
World Journal of Gastroenterology
Source:Eurekalert

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