hemoglobin H
Quick Summary
Hemoglobin H (Hb H) is a type of abnormal hemoglobin that can be associated with certain blood disorders, primarily alpha-thalassemia. Hemoglobin is a protein in red blood cells responsible for carrying oxygen throughout the body. In normal adult hemoglobin (Hb A), there are two alpha and two beta polypeptide chains. In Hb H, four beta chains are present instead of the usual two alpha and two beta chains.123
This imbalance in chain production leads to ineffective red blood cell production, resulting in anemia. Hb H is unstable and can be ineffective at delivering oxygen. It is often identified in combination with thalassemia, a group of inherited blood disorders characterized by reduced hemoglobin production. Symptoms can vary, but it is generally associated with anemia and, in severe cases, can lead to significant health issues.142
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- hemoglobinopathy
Hemoglobin H, found in many groups in the Old World (e.g., Chinese, Thai, Malayans, Greeks, Italians), has almost always been identified in combination with thalassemia; symptoms resemble those of thalassemia.
Read MoreHemoglobin H, found in many groups in the Old World (e.g., Chinese, Thai, Malayans, Greeks, Italians), has almost always been identified in combination with thalassemia; symptoms resemble those of thalassemia.
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blood diseaseThalassemia and hemoglobinopathies…tetramers to form β4 (hemoglobin H) or γ4 (hemoglobin Bart). These tetramers are ineffective in delivering oxygen and are unstable. Inheritance of deficiency of a pair of genes from both parents results in intrauterine fetal death or severe disease of the newborn.
Read More…tetramers to form β4 (hemoglobin H) or γ4 (hemoglobin Bart). These tetramers are ineffective in delivering oxygen and are unstable. Inheritance of deficiency of a pair of genes from both parents results in intrauterine fetal death or severe disease of the newborn.
Read More