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β thalassemia major (Mediterranean anemia or Cooley anemia) is caused by a β o /β o genotype. No functional β chains are produced, and thus no hemoglobin A can be assembled. This is the most severe form of β-thalassemia. β thalassemia intermedia is caused by a β + /β o or β + /β + genotype. In this form, some hemoglobin A is produced.
Alpha-thalassemia (α-thalassemia, α-thalassaemia) is an inherited blood disorder and a form of thalassemia. Thalassemias are a group of inherited blood conditions which result in the impaired production of hemoglobin , the molecule that carries oxygen in the blood. [ 5 ]
This list concerns blood type distribution between countries and regions.Blood type (also called a blood group) is a classification of blood, based on the presence and absence of antibodies and inherited antigenic substances on the surface of red blood cells (RBCs).
Beta-thalassemia; Other names: Microcytemia, beta type [1] Beta thalassemia genetics, the picture shows one example of how beta thalassemia is inherited. The beta globin gene is located on chromosome 11. A child inherits two beta globin genes (one from each parent). Specialty: Hematology: Types: Thalassemia minor, intermediate and major [2] Causes
In α-thalassemia, which is relatively frequent in Africa and several other countries, production of the α-chain of hemoglobin is impaired, and there is relative over-production of the β-chain. Individuals homozygous for β-thalassemia have severe anemia and are unlikely to survive and reproduce, so selection against the gene is strong.
Therefore, most transfusion-dependent thalassemia patients can be diagnosed within the first few years of life, which severe anemia, differed growth, jaundice and hepatosplenomegaly can be observed. Parameters for confirmation includes baseline hemoglobin level <7g/dL, enlargement of liver and spleen (>5 cm) and height in the first 10th percentile.
This is a list of countries by risk of premature death from non-communicable disease such as cardiovascular disease, cancer, diabetes, or chronic respiratory disease between ages 30 and 70 as published by the World Health Organization in 2008. Measuring the risk of dying from target NCDs is important to assess the extent of burden from ...
The Mentzer index, described in 1973 by William C. Mentzer, [1] is the MCV divided by the RBC count. It is said to be helpful in differentiating iron deficiency anemia from beta thalassemia trait.
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