Iron Overload
|
0.600 |
GeneticVariation
|
disease |
BEFREE |
Absence of hepcidin gene mutations in 10 Italian patients with primary iron overload.
|
11836175 |
2002 |
Iron Overload
|
0.600 |
AlteredExpression
|
disease |
BEFREE |
Constitutive hepcidin expression prevents iron overload in a mouse model of hemochromatosis.
|
12704388 |
2003 |
Iron Overload
|
0.600 |
Biomarker
|
disease |
BEFREE |
We report that urinary excretion of hepcidin was greatly increased in patients with iron overload, infections, or inflammatory diseases.
|
12433676 |
2003 |
Iron Overload
|
0.600 |
Biomarker
|
disease |
BEFREE |
Recent evidence shows that deficient hepcidin response to iron loading may contribute to iron overload even in the much milder common form of hemochromatosis, from mutations in the HFE gene.
|
12663437 |
2003 |
Iron Overload
|
0.600 |
Biomarker
|
disease |
BEFREE |
However, results of some studies indicate a link between hepcidin, a liver-derived peptide, and intestinal iron absorption, suggesting that this molecule could play a part in hepatic iron overload.
|
12606179 |
2003 |
Iron Overload
|
0.600 |
AlteredExpression
|
disease |
BEFREE |
In this study, we characterized the expression of human hepcidin in experimental and clinical iron overload conditions, including hereditary hemochromatosis.
|
12637325 |
2003 |
Iron Overload
|
0.600 |
GeneticVariation
|
disease |
BEFREE |
We have detected two new HAMP mutations in two different families, in which there is concordance between severity of iron overload and heterozygosity for HAMP mutations when present with the HFE C282Y mutation.
|
12915468 |
2003 |
Iron Overload
|
0.600 |
GeneticVariation
|
disease |
LHGDN |
Based on a digenic model of inheritance, these data suggest that the association of heterozygous mutations in the HFE and HAMP genes could lead, at least in some cases, to an adult-onset form of primary iron overload.
|
14670915 |
2004 |
Iron Overload
|
0.600 |
GeneticVariation
|
disease |
BEFREE |
HAMP gene mutations have been described to date in five families with iron overload.
|
15024747 |
2004 |
Iron Overload
|
0.600 |
Biomarker
|
disease |
BEFREE |
Hepcidin is a hepatic antimicrobial-like peptide whose role in iron homeostasis was first defined in animal models; deficiency of hepcidin in mice leads to iron overload, whereas its hepatic overexpression in transgenic animals causes iron deficiency.
|
14630809 |
2004 |
Iron Overload
|
0.600 |
Biomarker
|
disease |
BEFREE |
In addition, hepcidin is decreased in HFE knockout mice, which demonstrates characteristics of iron overload as in hemochromatosis patients.
|
14704284 |
2004 |
Iron Overload
|
0.600 |
Biomarker
|
disease |
BEFREE |
Hepcidin is considered to constitute a negative regulator of iron absorption, and its production is increased in inflammatory states and iron overload.
|
15198949 |
2004 |
Iron Overload
|
0.600 |
Biomarker
|
disease |
BEFREE |
Furthermore, a deregulation of hepcidin may cause elevated intestinal iron absorption that hallmarks a group of frequent iron overload disorders, the Hereditary Hemochromatosis.
|
16203112 |
2005 |
Iron Overload
|
0.600 |
AlteredExpression
|
disease |
BEFREE |
Here we show that, within the liver, mouse Hjv is selectively expressed by periportal hepatocytes and also that Hjv-mutant mice exhibit iron overload as well as a dramatic decrease in hepcidin expression.
|
16075058 |
2005 |
Iron Overload
|
0.600 |
Biomarker
|
disease |
BEFREE |
This mutation was associated with both parenchymal and reticuloendothelial iron overload in the liver, and with reduced urinary hepcidin excretion.
|
16351644 |
2005 |
Iron Overload
|
0.600 |
Biomarker
|
disease |
BEFREE |
A large variety of mutations within the genes encoding hepcidin (HAMP) and hemojuvelin (HJV) have been identified in patients with the severe iron overload disorder juvenile hemochromatosis (JH).
|
15811010 |
2005 |
Iron Overload
|
0.600 |
AlteredExpression
|
disease |
BEFREE |
An HFE-independent pathway that seems to involve TFR2 and HJV can regulate HAMP expression under conditions of iron overload.
|
16103673 |
2005 |
Iron Overload
|
0.600 |
GeneticVariation
|
disease |
BEFREE |
Primary iron overload with inappropriate hepcidin expression in V162del ferroportin disease.
|
15986403 |
2005 |
Iron Overload
|
0.600 |
GeneticVariation
|
disease |
BEFREE |
In humans, this could explain that low levels of hepcidin found during juvenile haemochromatosis and HFE-1 genetic haemochromatosis are associated with an iron overload phenotype.
|
15974953 |
2005 |
Iron Overload
|
0.600 |
Biomarker
|
disease |
LHGDN |
We measured urinary hepcidin in patients with other genetic causes of iron overload.
|
15671438 |
2005 |
Iron Overload
|
0.600 |
Biomarker
|
disease |
BEFREE |
Kupffer cells and macrophages are not required for hepatic hepcidin activation during iron overload.
|
15726660 |
2005 |
Iron Overload
|
0.600 |
AlteredExpression
|
disease |
BEFREE |
Our results suggest that, in beta-thalassaemia, serum factors might override the potential effect of iron overload on HAMP expression, thereby providing an explanation for the failure to arrest excessive intestinal iron absorption in these patients.
|
16939499 |
2006 |
Iron Overload
|
0.600 |
AlteredExpression
|
disease |
BEFREE |
A likely role for Hepc in iron metabolism was suggested by the observation that mice having disruption of the gene encoding the transcription factor USF2 failed to produce Hepc mRNA and developed spontaneous visceral iron overload.
|
16629180 |
2006 |
Iron Overload
|
0.600 |
AlteredExpression
|
disease |
BEFREE |
Hepcidin is the presumed negative regulator of systemic iron levels; its expression is induced in iron overload, infection, and inflammation, and by cytokines, but is suppressed in hypoxia and anemia.
|
16902156 |
2006 |
Iron Overload
|
0.600 |
GeneticVariation
|
disease |
BEFREE |
Four types of inherited iron overload have been recognized: type 1, the most common form with an autosomal recessive inheritance, is associated with mutations in the HFE gene on chromosome 6; type 2 (juvenile hemochromatosis) is an autosomal recessive disorder with causative mutations identified in the HJV gene (subtype A) on chromosome 1 and the HAMP gene (subtype B) on chromosome 19; type 3 has also an autosomal recessive inheritance with mutations in the TfR2 gene on chromosome 3; type 4 is an autosomal dominant condition with heterozygous mutations in the ferroportin 1 gene on chromosome 2.
|
16493621 |
2006 |