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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.
The prevalence of Hemoglobin H disease mirrors that of the hemoglobinopathies. As a whole, they are most prevalent in individuals of Asian, African, and Mediterranean decent. [ 5 ] There is a protective effect against malaria for individuals carrying thalassemia genes, which explains the high frequency of thalassemia within the worldwide ...
Alpha thalassemia is has greatest prevalence in populations originating from Southeast Asia, Mediterranean countries, Africa, the Middle East, India, and Central Asia. [8] Having a mild form of alpha thalassemia has been demonstrated to protect against malaria and thus can be an advantage in malaria endemic areas. [13]
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
Within a given English-speaking country, there is a form of the language considered to be Standard English: the Standard Englishes of different countries differ and can themselves be considered dialects. Standard English is often associated with the more educated layers of society as well as more formal registers. British and American English ...
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.
The computation of the diversity index is based on the population of each language as a proportion of the total population. The index cannot fully account for the vitality of languages. Also, the distinction between a language and a dialect is fluid and often political. A great number of languages are considered to be dialects of another ...
ATR-16 syndrome patients have a 1-2Mb deletion on the top of the chromosome 16 p-arm and are associated with a Mendelian inheritance of a-thalassemia. [7] ATR-X syndrome patients have no deletion in chromosome 16, a-thalassemia is rare, and this syndrome is consistent with X-linked recessive inheritance. [8]