Molecular mechanism of overlap between chronic liver disease and iron metabolism abnormality

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Excess iron is frequently accumulated in chronic liver diseases. The pathogenesis and iron metabolism abnormality are overlapped, which may be progressed by the interaction. Non-alcoholic fatty liver disease (NAFLD) also frequently merges with secondary hepatic iron accumulation, which contributes to the development of oxidative stress, liver cell damage, fibrosis and carcinogenesis. In this study, we investigated the expression of iron-related molecules in liver and duodenum tissue in mice fatty liver model and human hepatocellular in vitro model. Obesity and high-fat diet up-regulate TfR1 expression and down-regulate Hepc expression in the liver. Furthermore they up-regulate the iron transporter expressions in the duodenum.