نتایج جستجو برای: iron chelation

تعداد نتایج: 145419  

2007
Emanuele Angelucci Giovanni Barosi Clara Camaschella Maria Domenica Cappellini Mario Cazzola Renzo Galanello Monia Marchetti Antonio Piga Sante Tura

New measures of iron accumulation in liver and heart (superconducting quantum inference device and magnetic resonance imaging), and oral iron chelators (deferiprone and deferasirox) are available for managing iron overload in thalassemia major. To assure appropriate use of these new health technologies, the Italian Society of Hematology appointed a panel of experts to produce clinical practiceg...

2006
Ellis J. Neufeld

For nearly 30 years, patients with transfusional iron overload have depended on nightly deferoxamine infusions for iron chelation. Despite dramatic gains in life expectancy in the deferoxamine era for patients with transfusion-dependent anemias, the leading cause of death for young adults with thalassemia major and related disorders has been cardiac disease from myocardial iron deposition. Stra...

Journal: :Neuron 2003
Deepinder Kaur Ferda Yantiri Subramanian Rajagopalan Jyothi Kumar Jun Qin Mo Rapee Boonplueang Veena Viswanath Russell Jacobs Lichuan Yang M.Flint Beal Dino DiMonte Irene Volitaskis Lisa Ellerby Robert A Cherny Ashley I Bush Julie K Andersen

Studies on postmortem brains from Parkinson's patients reveal elevated iron in the substantia nigra (SN). Selective cell death in this brain region is associated with oxidative stress, which may be exacerbated by the presence of excess iron. Whether iron plays a causative role in cell death, however, is controversial. Here, we explore the effects of iron chelation via either transgenic expressi...

2003
Peter D. Jensen Finn T. Jensen Thorkil Christensen Hans Eiskjær Ulrik Baandrup Johan L. Nielsen

Evaluation of myocardial iron during iron chelation therapy is not feasible by repeated endomyocardial biopsies owing to the heterogeneity of iron distribution and the risk of complications. Recently, we described a noninvasive method based on magnetic resonance imaging. Here, the method was used for repeated estimation of the myocardial iron content during iron chelation with deferrioxamine in...

Journal: :Food technology and biotechnology 2016
Huanglei Pan Shasha Song Qiuyue Ma Hui Wei Difeng Ren Jun Lu

Black-bone silky fowl iron(II)-oligopeptide chelate was synthesized from iron(II) solution and the black-bone silky fowl oligopeptide, which was extracted from the muscle protein of black-bone silky fowl (Gallus gallus domesticus Brisson). Orthogonal array analysis was used to determine the optimal conditions for the iron(II)-oligopeptide chelate preparation. Ultraviolet-visible (UV-Vis) spectr...

Journal: :Blood 2006
Ellis J Neufeld

For nearly 30 years, patients with transfusional iron overload have depended on nightly deferoxamine infusions for iron chelation. Despite dramatic gains in life expectancy in the deferoxamine era for patients with transfusion-dependent anemias, the leading cause of death for young adults with thalassemia major and related disorders has been cardiac disease from myocardial iron deposition. Stra...

Journal: :Haematologica 2008
John C Wood Raffaella Origa Annalisa Agus Gildo Matta Thomas D Coates Renzo Galanello

We reviewed cardiac T2* assessments from 77 thalassemia major patients between the ages of 2.5 and 18 years to study optimal timing of cardiac iron screening by magnetic resonance imaging. No patient under 9.5 years of age showed detectable cardiac iron in contrast to 36% of patients between the ages of 15-18 years old, corresponding to an odds-ratio of 1.28 (28%) per year. All patients with ca...

Journal: :Frontiers in bioscience 2018
Annita Kolnagou George John Kontoghiorghes

Iron overload toxicity is the main cause of mortality and morbidity in thalassaemia patients. The complete elimination and prevention of iron overload is the main aim of chelation therapy, which can be achieved by chelation protocols that can effectively remove excess iron load and maintain body iron at normal levels. Deferiprone and selected combinations with deferoxamine can be designed, adju...

2014
Amarah Shakoor Maaman Zahoor Alina Sadaf Najveen Alvi Zehra Fadoo Arjumand Rizvi Farheen Quadri Fateh Ali Tipoo Mohammad Khurshid Zaffar Sajjad Steven Colan Babar S Hasan

INTRODUCTION Sideroblastic cardiomyopathy secondary to repeated blood transfusions is a feared complication in thalassaemia. Control of myocardial iron is thus becoming the cornerstone of thalassaemia management. Recent evidence suggests a role for L-type Ca(2+) channels in mediating iron uptake by the heart. Blocking the cellular iron uptake through these channels may add to the benefit of the...

Journal: :asia pacific journal of medical toxicology 0
maliheh zahmati department of chemistry, ferdowsi university of mashhad, mashhad, iran amir shokooh saljooghi department of chemistry, ferdowsi university of mashhad, mashhad, iran

background: metals such as iron, zinc, and copper are critical and necessary for the survival of all living organisms, whereas xenobiotic metals such as lead, cadmium, mercury, and arsenic have no known biologic role. any metals in high doses can have toxic effects. the aim of this work was to evaluate the hematological changes induced by lead as a toxic metal and characterize the potential eff...

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