نتایج جستجو برای: hemochromatosis hfe gene polymorphisms

تعداد نتایج: 1171061  

2011
Zahra Jowkar Bita Geramizadeh Mahmoud Shariat

BACKGROUND The human HFE gene (a key component of iron homeostasis in humans) is involved in hereditary hemochromatosis, a common autosomal recessive genetic disorder that is characterized by excessive intestinal iron absorption and progressive iron overload. OBJECTIVES In this study, we assessed the frequency of two common forms of hemochromatosis HFE gene mutation (C282Y and H63D) in patien...

Journal: :Zeitschrift Fur Gastroenterologie 2023

Hereditary Hemochromatosis (HH) is one of the most common genetic diseases in Caucasian population, with a prevalence 1:200/400. Among four different types, form Type 1, homozygous p.C282Y variant HFE gene, which guanosine replaced by an adenosine (c.845 G>A). This results misfolding protein, can no longer reach cell membrane hepatocytes, thereby losing its ability to work as sensor for iron co...

2017

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 ...

Journal: :Internal medicine 2001
H Imanishi W Liu J Cheng N Ikeda Y Amuro T Hada

Most patients with hereditary hemochromatosis are homozygous for C282Y in the HFE gene in populations of Celtic origin, but the genetic cause of this disease is unknown in Japan because of its rarity. A 48-year-old Japanese patient was recently diagnosed with idiopathic hemochromatosis. Analysis of the entire coding region of the patient's HFE by RT-PCR showed a heterozygous nucleotide substitu...

2010
David Cantonwine Howard Hu Martha Maria Téllez-Rojo Brisa N Sánchez Héctor Lamadrid-Figueroa Adrienne S Ettinger Adriana Mercado-García Mauricio Hernández-Avila Robert O Wright

BACKGROUND Neonatal growth is a complex process involving genetic and environmental factors. Polymorphisms in the hemochromatosis (HFE) iron regulatory genes have been shown to modify transport and toxicity of lead which is known to affect birth weight. METHODS We investigated the role of HFE C282Y, HFE H63 D, and transferrin (TF) P570 S gene variants in modifying the association of lead and ...

2017
Tiago L. Duarte Carolina Caldas Ana G. Santos Sandro Silva-Gomes Andreia Santos-Gonçalves Maria João Martins Graça Porto José Manuel Lopes

BACKGROUND AND AIMS In hereditary hemochromatosis, iron deposition in the liver parenchyma may lead to fibrosis, cirrhosis and hepatocellular carcinoma. Most cases are ascribed to a common mutation in the HFE gene, but the extent of clinical expression is greatly influenced by the combined action of yet unidentified genetic and/or environmental modifying factors. In mice, transcription factor N...

Journal: :Haematologica 2011
Dorine W Swinkels Robert E Fleming

Remarkable advances in understanding the pathogenesis of hereditary hemochromatosis have been made since 1996, the year in which the HFE gene, which is responsible for the vast majority of cases, was discovered. The recognition of the central role of the iron regulatory hormone hepcidin in the pathogenesis of hereditary hemochromatosis has been particularly significant. In addition to HFE, defe...

Journal: :Blood 2008
Gérald Le Gac Isabelle Gourlaouen Christophe Ronsin Vanna Géromel Anne Bourgarit Nathalie Parquet Sylvia Quemener Cédric Le Maréchal Jian-Min Chen Claude Férec

Hemochromatosis is predominantly associated with the HFE p.C282Y homozygous genotype, which is carried by approximately 1 person in 200 in Northern European populations. However, p.C282Y homozygosity is often characterized by incomplete penetrance. Here, we describe the case of a woman who had a major structural alteration in the HFE gene. Molecular characterization revealed an Alu-mediated rec...

Journal: :Blood 2003
Richard S Ajioka James P Kushner

Hereditary hemochromatosis is an autosomal recessive disorder characterized by hyperabsorption of dietary iron and accelerated recycling of iron by macrophages. Homozygosity for the disease trait occurs in approximately 5 per 1000 whites of northern European descent.1 The causative gene, designated HFE, was identified in 1996.2 Most individuals with hemochromatosis are homozygous for a guanine ...

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