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KMID : 1161520160200040175
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Animal Cells and Systems
2016 Volume.20 No. 4 p.175 ~ p.178
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Essential roles of bile acids and their nuclear receptors, FXR and PXR, in the cholestatic liver disease
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Han Bu-Min
Kim Byung-Kwon
Kim Kyu-Min
Fang Sung-Soon
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Abstract
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Bile acids (BAs) are steroid acids found predominantly in the bile of mammals and other vertebrates. Though BAs have been known as digestive juice, recent studies have revealed that BAs act as signaling molecules to control metabolism and inflammation. Today, BAs are considered as potential therapeutic molecules for treatment of complex metabolic liver disease. However, the detergent properties of BAs lead to hepatic injury and intrahepatic cholestasis when BAs are accumulated in the liver with impaired bile flow into gall bladder. Cholestasis is a pathological condition of hepatic retention of cytotoxic bile acids. To date, hydrophilic ursodeoxycholic acid has been currently used to treat cholestasis, but the efficacy of UDCA for cholestasis is still limited. Given that BAs are endogenous ligands of several nuclear receptors, including Farnesoid X receptor and Pregnane X receptor, novel synthetic ligands for those nuclear receptors are promising for the treatment of cholestatic liver diseases.
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KEYWORD
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Bile acids, Farnesoid X receptor, Pregnane X receptor
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