Altered lipid metabolism in Hfe-knockout mice promotes severe NAFLD and early fibrosis.

The HFE protein plays a crucial role in the control of cellular iron homeostasis. Steatosis is commonly observed in HFE-related iron-overload disorders, and current evidence suggests a causal link between iron and steatosis. Here, we investigated the potential contribution of HFE mutations to hepatic lipid metabolism and its role in the pathogenesis of nonalcoholic fatty liver disease.

Hepcidin regulation in wild-type and Hfe knockout mice in response to alcohol consumption: evidence for an alcohol-induced hypoxic response.

Background/aims: Expression of Hamp1, the gene encoding the iron regulatory peptide hepcidin, is inappropriately low in HFE-associated hereditary hemochromatosis and Hfe knockout mice (Hfe(-/-)). Since chronic alcohol consumption is also associated with disturbances in iron metabolism, we investigated the effects of alcohol consumption on hepcidin mRNA expression in Hfe(-/-) mice.

Methods: Hfe(-/-) and C57BL/6 (wild-type) mice were pair-fed either an alcohol liquid diet or control diet for up to 8 weeks.

DHPLC mutation analysis of Jagged1 (JAG1) reveals six novel mutations in Australian alagille syndrome patients.

Alagille syndrome (AGS) is an autosomal dominant disorder characterized by abnormal development of the liver, heart, skeleton, eye, and face. Mutations in the Jagged1 gene have been found to result in the AGS phenotype. Using denaturing high performance liquid chromatography (DHPLC) mutation analysis we have screened 20 individuals with symptoms of AGS from 14 families for mutations within Jagged1.