Iron overload in hematological disorders.

Iron overload in hematological disorders. Presse Med. 2017 Nov 22;: Authors: Fibach E, Rachmilewitz EA Abstract While most common symptom of impairment of iron homeostasis is iron deficiency anemia, some hematological disorders are associated with iron overload (IO). These disorders are related mainly to chronic severe hemolytic anemia, where red blood cells (RBC) or their precursors are destroyed prematurely (hemolyzed), leading to anemia that cannot be compensated by increased production of new RBC. In such cases, IO is mainly due to repeated RBC transfusions and/or increased uptake of iron in the gastrointestinal tract. Normally, iron is present in the plasma and in the cells bound to compounds that render it redox inactive. Iron overload leaves a fraction of the iron free (labile iron pool) and redox active, leading to the generation of excess free radicals such as the reactive oxygen species. This condition upsets the cellular redox balance between oxidants and antioxidants, leading to oxidative stress. The free radicals bind to various cellular components, thereby becoming toxic to vital organs. Oxidative stress may also affect blood cells, such as RBC, platelets and neutrophils, exacerbating the anemia, and causing recurrent infections and thrombotic events, respectively. The toxic effect of IO can be decreased by treating the patients with iron chelators that enter cells, bind free iron and remove it from the body through the urine and feces. Iro...
Source: Presse Medicale - Category: General Medicine Authors: Tags: Presse Med Source Type: research

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Conclusion: Complex karyotype was most frequently associated with myelodysplastic syndromes and acute myeloid leukemia. Trisomy 21 and deletion 5q were the commonest cytogenetic abnormalities found. We also assessed complex karyotype in benign diseases and detected one patient of aplastic anemia with complex karyotype. This is the first study highlighting the presence of complex karyotypes in hematological disorders in our region. PMID: 29971104 [PubMed]
Source: Journal of Oncology - Category: Cancer & Oncology Tags: J Oncol Source Type: research
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Source: Clinical And Experimental Dermatology - Category: Dermatology Authors: Tags: Concise Report Source Type: research
Conditions:   Acute Biphenotypic Leukemia;   Acute Lymphoblastic Leukemia in Remission;   Acute Myeloid Leukemia in Remission;   Blasts Under 10 Percent of Bone Marrow Nucleated Cells;   Blasts Under 5 Percent of Bone Marrow Nucleated Cells;   Chronic Myelogenous Leukemia, BCR-ABL1 Positive ;   Cytogenetic Abnormality;   High Risk Myelodysplastic Syndrome;   Myelodysplastic Syndrome With Excess Blasts;   Pancytopenia;   Refractory Anemia Interventions: &nb...
Source: - Category: Research Source Type: clinical trials
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Source: Blood - Category: Hematology Authors: Tags: How I Treat, Free Research Articles, Myeloid Neoplasia, Clinical Trials and Observations Source Type: research
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Source: Biology of Blood and Marrow Transplantation - Category: Hematology Authors: Source Type: research
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