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  • Title: beta+ -Thalassemia intermedia. Genetic and biochemical study of a family including 3 cases.
    Author: Philip T, Souillet G, Philippe N, Freycon F, Bektas S, Morlé L, Trabuchet G, Godet J.
    Journal: Hum Hered; 1980; 30(5):324-30. PubMed ID: 6156119.
    Abstract:
    3 cases of thalassemia intermedia have been found in the same family. The parents are not consanguineous but both come from the same town of Calabria (Italia). The mother is a heterozygote for beta-thalassemia, as well as the father whose globin chain synthesis is nevertheless balanced, thus suggesting an association with alpha-thalassemia. This hypothesis is confirmed by the fact that one of the offspring shows the typical characteristics of alpha-thalassemia heterozygosity. The 3 subjects with thalassemia intermedia are synthesizing the beta-globin chain in a proportion higher than that expected from the level of Hb A in peripheral blood. In 2 of them, the globin chain biosynthetic ratio measured in the blood reticulocytes is not significantly different from that usually observed in thalassemia major of either the beta o or beta+ type. In the third subject the globin chain synthesis is slightly less unbalanced probably because an alpha-thalassemia is also present. This suggests that factors other than a lesser imbalance in globin chain synthesis are involved in the occurrence of thalassemia intermedia. One of these factors could be a better survival of cells richer in Hb F than in Hb A, since these cells must have a lesser excess of alpha-chains.
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