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It is also cheap and easy, making regular screening for alpha-thalassemia a plausible possibility. [ 9 ] [ 10 ] Anemia is a factor in fetuses with Hemoglobin Bart's disease as there is an "increased cardiac output" and hypovolemia as the tissues of the fetus require oxygen because of the gamma globulin's high affinity for oxygen.
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 ]
Hemoglobin H disease, also called alpha-thalassemia intermedia, is a disease affecting hemoglobin, the oxygen carrying molecule within red blood cells. It is a form of Alpha-thalassemia which most commonly occurs due to deletion of 3 out of 4 of the α-globin genes.
Alpha thalassemia is caused by deficient production of the alpha globin component of hemoglobin, while beta thalassemia is a deficiency in the beta globin component. [7] The severity of alpha and beta thalassemia depends on how many of the four genes for alpha globin or two genes for beta globin are faulty. [ 2 ]
Fetuses have a non-alpha chain called gamma and after birth it is then called beta. The beta chain will pair with the alpha chain. It is the combining of two alpha and non-alpha chains which create a hemoglobin molecule. Two alpha and two gamma chains form fetal hemoglobin or hemoglobin F (HbF). After the first five to six months after birth ...
Hemoglobinopathy is the medical term for a group of inherited blood disorders involving the hemoglobin, the protein of red blood cells. [1] They are generally single-gene disorders and, in most cases, they are inherited as autosomal recessive traits.
It is the most common nondeletional alpha-thalassemia mutation associated with hemoglobin H disease. [1] The quantity of hemoglobin in the cells is low because the messenger RNA is unstable and some is degraded prior to protein synthesis. Another reason is that the Constant Spring alpha chain protein is itself unstable.
Alpha-thalassemia mental retardation syndrome; Other names: ATR-X syndrome: Child of 8 yrs with the characteristic facial features of ATR-X syndrome. Note the upswept frontal hair line, hypertelorism, epicanthic folds, flat nasal bridge, small triangular upturned nose, tented upper lip, everted lower lip and hypotonic facies.
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