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A sickle allele is always the same mutation of the beta-globin gene (glutamic acid to valine at amino acid six). In contrast, beta-thalassemia alleles can be created by many different mutations including both deletion and non-deletion forms.
Diagnosis is commonly confirmed by DNA sequencing. [18] The hemoglobin structural variants can be broadly classified as follows: [19] Sickle cell disorders, which are the most prevalent form of hemoglobinopathy. Sickle hemoglobin (HbS) is prone to polymerize when deoxygenated, precipitating within the red blood cell. This damages the RBC ...
Frequent blood transfusions may be given to many patients, such as those with thalassemia, sickle cell disease, leukemia, aplastic anemia, or myelodysplastic syndrome, among others. It is diagnosed with a blood transferrin test and a liver biopsy. It is treated with venipuncture, erythrocytapheresis, and iron chelation therapy.
In thalassemia major, mean corpuscular volume (MCV) are less than 70 fl, in thalassemia intermedia, MCV levels are below 80 fl (The normal range for MCV is 80–100 fl). [66] The Mentzer index can be a pointer for diagnosis of thalassemia; it can can be calculated from a CBC report. [67] [68]
Sickle cell disease (SCD), also simply called sickle cell, is a group of hemoglobin-related blood disorders that are typically inherited. [2] The most common type is known as sickle cell anemia. [2] Sickle cell anemia results in an abnormality in the oxygen-carrying protein haemoglobin found in red blood cells. [2]
Thalassemia is an inherited condition that has variants in alpha or beta globin genes that result in lower levels of globin chains required to make hemoglobin, resulting in alpha thalassemia or beta thalassemia, respectively. [3] Diagnosis is made by DNA analysis for alpha thalassemia and hemoglobin analysis for beta thalassemia. [3] Management ...
These diseases are typically diseases in which chronic blood loss requires frequent blood transfusions, such as sickle cell anemia and thalassemia, though beta thalassemia minor has been associated with hemosiderin deposits in the liver in those with non-alcoholic fatty liver disease independent of any transfusions. [5] [6]
Sickle cell disease; Thalassemia; Methemoglobinemia; Anemias (lack of red blood cells or hemoglobin) Iron-deficiency anemia; Megaloblastic anemia. Vitamin B 12 deficiency Pernicious anemia; Folate deficiency; Hemolytic anemias (destruction of red blood cells) Genetic disorders of RBC membrane Hereditary spherocytosis; Hereditary elliptocytosis
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