Hereditary hemochromatosis is an autosomal recessive disorder that disturbs iron metabolism and results in iron deposition throughout the body. Iron accumulation in various organs may cause a wide range of systemic symptoms and cutaneous manifestations of the disease are particularly striking. Classically, hereditary hemochromatosis has been termed "bronze diabetes." Although diffuse hyperpigme...

Here we investigate the regulation of hepcidin, a hormone that inhibits dietary iron absorption and macrophage iron recycling, by the serum iron-binding protein transferrin. Mice deficient in transferrin (Tf(hpx/hpx)) and hemojuvelin (Hjv(-/-)), a gene mutated in juvenile hemochromatosis, a disease of hepcidin deficiency and iron overload, were generated. While Tf(hpx/hpx) Hjv(+/+) and Tf(hpx/h...

Mutations in hemojuvelin (HJV) are the most common cause of the juvenile-onset form of the iron overload disorder hereditary hemochromatosis. The discovery that HJV functions as a co-receptor for the bone morphogenetic protein (BMP) family of signaling molecules helped to identify this signaling pathway as a central regulator of the key iron hormone hepcidin in the control of systemic iron home...

Hemojuvelin (HJV) positively modulates the iron regulator hepcidin, and its mutations are the major cause of juvenile hemochromatosis (JH), a recessive disease leading to iron overload. Defective HJV reduces hepcidin up-regulation both in humans and in Hjv-deficient mice. To investigate the JH pathogenesis and the functional properties of human HJV we studied the biosynthesis and maturation of ...

Mutations of hepcidin (HAMP) and hemo-juvelin (HJV) genes have been recently demonstrated to result in juvenile hemochromatosis. Expression of HAMP is regulated by iron status or infection, whereas regulation of HJV is yet unknown. Using quantitative real-time polymerase chain reaction, we compared expression of Hamp and Rgmc (the murine ortholog of HJV) in livers of mice treated with iron, ery...

Mutations of hepcidin (HAMP) and hemojuvelin (HJV) genes have been recently demonstrated to result in juvenile hemochromatosis. Expression of HAMP is regulated by iron status or infection, whereas regulation of HJV is yet unknown. Using quantitative real-time PCR, we compared expression of Hamp and Rgmc (the murine ortholog of HJV) in livers of mice treated with iron, erythropoietin or lipopoly...

Juvenile or type 2 hemochromatosis (JH) is transmitted as a recessive trait that leads to severe iron overload and organ damage typically before age 30 years. Linkage to a locus on chromosome 1q has been found in most patients with JH. The recently identified causal gene encodes hemojuvelin, a protein with a proposed crucial role in iron metabolism. A second, rare type of JH, with clinical expr...

Hemochromatosis is a relatively rare genetic disease that results in restrictive cardiomyopathy caused by the deposition of iron. Iron has higher affinity to deposit conduction system heart resulting lower threshold for developing arrhythmias. We sought assess data on burden arrhythmias hospitalized patients with hemochromatosis. To study impact arrythmia special cohort i.e. adults hemochromato...

Hereditary hemochromatosis (HH), also termed “genetic hemochromatosis”, is a genetic autosomal recessive disorder which occurs as a result of genetic mutations of certain genes (HFE gene) involved in the metabolism of iron, resulting in increased intestinal iron absorption. Common initial symptoms comprise abdominal pain, paleness, lethargy, and weight loss. The start of symptoms is between 30 ...