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Hereditary haemochromatosis

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https://www.readbyqxmd.com/read/29722188/haemochromatosis-a-clinical-update-for-the-practising-physician
#1
Daniel E Radford-Smith, Elizabeth E Powell, Lawrie W Powell
Haemochromatosis is most commonly due to the autosomal recessive inheritance of a C282Y substitution in the HFE protein, whereby both alleles of the corresponding gene are affected. The disease is characterised by an inappropriate increase in intestinal iron absorption due to reduced expression of the iron regulatory protein, hepcidin. Progressive iron deposition in parenchymal tissues may ultimately lead to liver and other organ toxicity. The characteristic biochemical abnormalities are raised serum ferritin and transferrin saturation, which can be used in conjunction with genetic tests and emerging magnetic resonance imaging-based techniques to diagnose patients with the disorder...
May 2018: Internal Medicine Journal
https://www.readbyqxmd.com/read/29660923/haemochromatosis-pathophysiology-and-the-red-blood-cell1
#2
Kieran J Richardson, Antony P McNamee, Michael J Simmonds
Haemochromatosis remains the most prevalent genetic disorder of Caucasian populations in Australia and the United States, occurring in ∼1 of 200 individuals and having a carrier frequency of 10-14%. Hereditary haemochromatosis is an autosomal recessive condition, that is phenotypically characterised by a gradual accumulation of iron, above and beyond that required for biological function. Once the binding capacity of iron carriers reaches saturation, the highly reactive free iron generates radicals that may lead to widespread cellular dysfunction...
April 7, 2018: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/29620054/haemochromatosis
#3
REVIEW
Pierre Brissot, Antonello Pietrangelo, Paul C Adams, Barbara de Graaff, Christine E McLaren, Olivier Loréal
Haemochromatosis is defined as systemic iron overload of genetic origin, caused by a reduction in the concentration of the iron regulatory hormone hepcidin, or a reduction in hepcidin-ferroportin binding. Hepcidin regulates the activity of ferroportin, which is the only identified cellular iron exporter. The most common form of haemochromatosis is due to homozygous mutations (specifically, the C282Y mutation) in HFE, which encodes hereditary haemochromatosis protein. Non-HFE forms of haemochromatosis due to mutations in HAMP, HJV or TFR2 are much rarer...
April 5, 2018: Nature Reviews. Disease Primers
https://www.readbyqxmd.com/read/29588838/the-clinical-management-of-hereditary-haemochromatosis
#4
REVIEW
Marinos Pericleous, Claire Kelly, Charles Vijay
Hereditary haemochromatosis is an autosomal recessive disorder with variable penetrance. Most patients are C282Y homozygotes while heterozygotes or patients who are homozygous with other mutations are uncommonly affected. The true genotype to phenotype expression remains unclear. Treatment with phlebotomy is highly effective and cost-efficient while liver transplantation confers a curative option.
April 2018: Frontline Gastroenterology
https://www.readbyqxmd.com/read/29442300/population-screening-for-hereditary-haemochromatosis-in-australia-construction-and-validation-of-a-state-transition-cost-effectiveness-model
#5
Barbara de Graaff, Lei Si, Amanda L Neil, Kwang Chien Yee, Kristy Sanderson, Lyle C Gurrin, Andrew J Palmer
INTRODUCTION: HFE-associated haemochromatosis, the most common monogenic disorder amongst populations of northern European ancestry, is characterised by iron overload. Excess iron is stored in parenchymal tissues, leading to morbidity and mortality. Population screening programmes are likely to improve early diagnosis, thereby decreasing associated disease. Our aim was to develop and validate a health economics model of screening using utilities and costs from a haemochromatosis cohort...
March 2017: PharmacoEconomics Open
https://www.readbyqxmd.com/read/29301806/inherited-haemochromatosis-with-c282y-mutation-in-a-patient-with-alpha-thalassaemia-a-treatment-dilemma
#6
Mohammed Abdullah Al Qasem, Fayez Hanna, Usira S Vithanarachchi, Alhossain A Khalafallah
A Caucasian 24-year-old female patient suffers from two hereditary disorders: alpha-thalassaemia, which is prevalent in Asia and rare in Europe, and haemochromatosis, which is prevalent among northern Europe and rare in Asia. The clinical presentation and management of one of these diseases is controversial for the other. She presented 5 years ago with a clinical picture of refractory iron-deficiency anaemia secondary to menorrhagia. On treating her with the standard iron therapy, her anaemia persists although with adquate iron stores...
January 4, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29230833/causes-of-iron-overload-in-blood-donors-a-clinical-study
#7
A H Laursen, O W Bjerrum, L Friis-Hansen, T O Hansen, J L Marott, K Magnussen
BACKGROUND AND OBJECTIVES: Despite the obligate iron loss from blood donation, some donors present with hyperferritinaemia that can result from a wide range of acute and chronic conditions including hereditary haemochromatosis (HH). The objective of our study was to investigate the causes of hyperferritinaemia in the blood donor population and explore the value of extensive HH mutational analyses. MATERIALS AND METHODS: Forty-nine consecutive donors (f = 6, m = 43) were included prospectively from the Capital Regional Blood Center...
February 2018: Vox Sanguinis
https://www.readbyqxmd.com/read/29228396/comment-on-hereditary-haemochromatosis-arthropathy-and-doppler-ultrasound-findings-of-synovitis-reply
#8
Anuoluwapo R Oke, Ernest Wong, Steven Young-Min
No abstract text is available yet for this article.
December 7, 2017: Rheumatology
https://www.readbyqxmd.com/read/29195602/reduction-of-body-iron-in-hfe-related-haemochromatosis-and-moderate-iron-overload-mi-iron-a-multicentre-participant-blinded-randomised-controlled-trial
#9
Sim Y Ong, Lyle C Gurrin, Lara Dolling, Jeanette Dixon, Amanda J Nicoll, Michelle Wolthuizen, Erica M Wood, Gregory J Anderson, Grant A Ramm, Katrina J Allen, John K Olynyk, Darrell Crawford, Louise E Ramm, Paul Gow, Simon Durrant, Lawrie W Powell, Martin B Delatycki
BACKGROUND: The iron overload disorder hereditary haemochromatosis is most commonly caused by HFE p.Cys282Tyr homozygosity. In the absence of results from any randomised trials, current evidence is insufficient to determine whether individuals with hereditary haemochromatosis and moderately elevated serum ferritin, should undergo iron reduction treatment. This trial aimed to establish whether serum ferritin normalisation in this population improved symptoms and surrogate biomarkers. METHODS: This study was a multicentre, participant-blinded, randomised controlled trial done at three centres in Australia...
December 2017: Lancet Haematology
https://www.readbyqxmd.com/read/29145899/-diagnosis-of-haemochromatosis
#10
L IJsselstijn, A A van Houten, F Weerkamp
Interpretation of laboratory parameters in cases of haemochromatosis can be difficult. Here, we describe two patients with markedly elevated transferrin saturation and high ferritin levels. The first patient is a 51-year-old woman who had been complaining of fatigue, abdominal pain and arthritis for three years. Her liver enzymes were mildly elevated. Secondary causes of iron overload had been excluded. DNA investigation found a homozygous p.Cys282Tyr mutation in the HFE protein, consistent with hereditary haemochromatosis...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/29120023/role-of-liver-magnetic-resonance-imaging-in-hyperferritinaemia-and-the-diagnosis-of-iron-overload
#11
Axel Ruefer, Christine Bapst, Rudolf Benz, Jens Bremerich, Nathan Cantoni, Laura Infanti, Kaveh Samii, Mathias Schmid, Jean-Paul Vallée
Hyperferritinaemia is a frequent clinical problem. Elevated serum ferritin levels can be detected in different genetic and acquired diseases and can occur with or without anaemia. It is therefore important to determine whether hyperferritinaemia is due to iron overload or due to a secondary cause. The main causes of iron overload are intestinal iron hyperabsorption disorders and transfusion-dependent disorders. Iron homeostasis and iron overload are quantified by different diagnostic approaches. The evaluation of serum ferritin and transferrin saturation is the first diagnostic step to identify the cause of hyperferritinaemia...
November 9, 2017: Swiss Medical Weekly
https://www.readbyqxmd.com/read/29065925/ultrasound-verified-inflammation-and-structural-damage-in-patients-with-hereditary-haemochromatosis-related-arthropathy
#12
Christian Dejaco, Andreas Stadlmayr, Christina Duftner, Viktoria Trimmel, Rusmir Husic, Elisabeth Krones, Shahin Zandieh, Emma Husar-Memmer, Gernot Zollner, Josef Hermann, Judith Gretler, Angelika Lackner, Anja Ficjan, Christian Datz, Roland Axman, Jochen Zwerina
BACKGROUND: Chronic arthropathy occurs in approximately two thirds of patients with hereditary haemochromatosis (HH). The aim was to study inflammatory and structural lesions in patients with HH with (HH-A) and without arthropathy (HH-WA) using ultrasonography. METHODS: This was a cross-sectional study of 26 patients with HH-A, 24 with HH-WA and 37 with hand osteoarthritis (HOA). Clinical examination was performed in 68 joints, and we retrieved data on hand function, pain and global disease activity (all using a visual analogue scale (VAS)), morning stiffness and ferritin levels...
October 24, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28930516/new-targeted-therapies-and-diagnostic-methods-for-iron-overload-diseases
#13
REVIEW
Annita Kolnagou, Christina N Kontoghiorghe, George John Kontoghiorghes
Millions of people worldwide suffer from iron overload toxicity diseases such as transfusional iron overload in thalassaemia and hereditary haemochromatosis. The accumulation and presence of toxic focal iron deposits causing tissue damage can also be identified in Friedreich's ataxia, Alzheimer's, Parkinson's, renal and other diseases. Different diagnostic criteria of toxicity and therapeutic interventions apply to each disease of excess or misplaced iron. Magnetic resonance imaging relaxation times T2 and T2* for monitoring iron deposits in organs and iron biomarkers such as serum ferritin and transferrin iron saturation have contributed in the elucidation of iron toxicity mechanisms and pathways, and also the evaluation of the efficacy and mode of action of chelating drugs in the treatment of diseases related to iron overload, toxicity and metabolism...
January 1, 2018: Frontiers in Bioscience (Scholar Edition)
https://www.readbyqxmd.com/read/28624652/association-of-transferrin-saturation-with-the-arthropathy-of-hereditary-hemochromatosis
#14
EDITORIAL
Nancy L Whalen, John K Olynyk
No abstract text is available yet for this article.
June 15, 2017: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28399358/care-for-haemoglobinopathy-patients-in-slovakia
#15
Viera Fábryová, Peter Božek, Monika Drakulová, Andrea Kollárová, Zuzana Laluhová Striežencová, Michaela Macichová, Adriena Sakalová
BACKGROUND: The paper presents the results od 22-year study of screening and follow-up of haemoglobinopathies in Slovakia, an overview of genetic mutations, the coincidence with hereditary haemochromatosis mutations, and the procedure in genetic councelling. METHODS: Between 1993-2015, in three centres in Bratislava and in one centre in Kosice, carriers of beta-thalassaemic genes or other haemoglobinopathies were searched for. Diagnosis was performed by haematologists, whereby the family history was evaluated, together with the overall clinical condition, blood count and blood smear, iron and haemolysis parameters, mutations of hereditary haemochromatosis, and haemoglobin electrophoresis testing...
March 2017: Central European Journal of Public Health
https://www.readbyqxmd.com/read/28303071/the-regulation-of-iron-absorption-and-homeostasis
#16
REVIEW
Daniel F Wallace
Iron is an essential element in biology, required for numerous cellular processes. Either too much or too little iron can be detrimental, and organisms have developed mechanisms for balancing iron within safe limits. In mammals there are no controlled mechanisms for the excretion of excess iron, hence body iron homeostasis is regulated at the sites of absorption, utilisation and recycling. This review will discuss the discoveries that have been made in the past 20 years into advancing our understanding of iron homeostasis and its regulation...
May 2016: Clinical Biochemist. Reviews
https://www.readbyqxmd.com/read/28276324/tfr2-related-haemochromatosis-in-the-netherlands-a-cause-of-arthralgia-in-young-adulthood
#17
T M A Peters, A F M Meulders, K Redert, M L H Cuijpers, A J M Rennings, M C H Janssen, N M A Blijlevens, D W Swinkels
BACKGROUND: Type 3 hereditary haemochromatosis (HH) is a rare iron overload disorder caused by variants in the transferrin 2 receptor (TFR2) gene. We aim to present characteristics of patients diagnosed with TFR2-HH in the Netherlands, in order to increase knowledge and awareness of this disease. METHODS: We collected clinical, biochemical and genetic data from four patients from three families diagnosed with HH type 3 in the Netherlands between 2009 and 2016. RESULTS: Three women and one man diagnosed with HH type 3 presented with arthralgia and elevated ferritin levels and transferrin saturation (TSAT) at ages 25-41 years...
March 2017: Netherlands Journal of Medicine
https://www.readbyqxmd.com/read/28273330/interventions-for-hereditary-haemochromatosis-an-attempted-network-meta-analysis
#18
REVIEW
Elena Buzzetti, Maria Kalafateli, Douglas Thorburn, Brian R Davidson, Emmanuel Tsochatzis, Kurinchi Selvan Gurusamy
BACKGROUND: Hereditary haemochromatosis is a genetic disorder related to proteins involved in iron transport, resulting in iron load and deposition of iron in various tissues of the body. This iron overload leads to complications including liver cirrhosis (and related complications such as liver failure and hepatocellular carcinoma), cardiac failure, cardiac arrhythmias, impotence, diabetes, arthritis, and skin pigmentation. Phlebotomy (venesection or 'blood letting') is the currently recommended treatment for hereditary haemochromatosis...
March 8, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28260267/performing-therapeutic-venesection-in-a-doctor-s-surgery
#19
REVIEW
Lim Hy, Ho Wk Ho
BACKGROUND: Although venesection was widely applied in the past for the treatment of various ailments and diseases, in modern medical practice, it is indicated in very few conditions, namely, hereditary haemochromatosis, polycythaemia and porphyria cutanea tarda. OBJECTIVE: This article briefly reviews the pathophysiology of these conditions, and the rationale and goals of therapeutic venesection as a treatment modality. It also summarises the venesection procedure itself and the considerations for setting up a venesection service in a doctor's surgery...
March 2017: Australian Family Physician
https://www.readbyqxmd.com/read/28052950/sepsis-and-siderosis-yersinia-enterocolitica-and-hereditary-haemochromatosis
#20
Phoebe A Thwaites, Marion L Woods
A 60-year-old woman was admitted with sepsis, relative bradycardia, CT evidence of numerous small liver abscesses and 'skin bronzing' consistent with hereditary haemochromatosis (HH). Yersinia enterocolitica O:9 infection was confirmed by serology specimens taken 10 days apart. Iron overload was detected, and homozygous C282Y gene mutation confirmed HH. Liver biopsy revealed grade IV siderosis with micronodular cirrhosis. Haemochromatosis is a common, inherited disorder leading to iron overload that can produce end-organ damage from excess iron deposition...
January 4, 2017: BMJ Case Reports
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