Abstract
Cholesterol cholelithiasis is one of the most common gastroenterological diseases in Western countries. It is a polygenic disease resulting from disturbed biliary cholesterol homeostasis. Association studies identified six human gallstone candidate genes. Polymorphisms in the genes encoding the apolipoproteins B and E, phospholipid flippase ( ABCB4), cholesterol ester transfer protein ( CETP), cholesterol-7alpha-hydroxylase ( CYP7A1) and ileal bile acid transporter ( SLC10A2) are correlated with gallstone prevalence. Quantitative Trait Locus (QTL) analysis localises additional unknown gallstone genes in inbred mice. Based on the natural variation of cholesterol gallstone susceptibility among different inbred strains, 5 lithogenic ( Lith) loci have been identified. Hepatobiliary transporters (e. g. bile salt export pump Abcb11) and key proteins of the lipoprotein metabolism (e. g. hepatic lipase Lipc) could be established as creedal candidate genes for Lith loci. The rapid progress of mouse and human genome projects provides the basis for the analysis of orthologous human LITH genes in gallstone patients, which might offer new prospects for individual risk assessment and molecular targets for stone prevention.
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