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The homozygous state for Hb Crete [beta129 (H7) Ala-->Pro] is associated with a complex phenotype including erythrocytosis and functional anemia.

Abstract
Hb Crete, an electrophoretically neutral, unstable, high oxygen affinity variant, was characterized by protein and DNA analyses in the homozygous state in a 32-year-old woman from Crete, with erythrocytosis and microcytosis. The proband and members of her family over 3 generations, including 5 carriers of Hb Crete, were subject to clinical, hematological and biochemical investigations, and DNA, RNA and protein studies were carried out. The proband demonstrated features associated with disturbed hemoglobin (Hb) structure and function, including erythrocytosis and additionally a state of functional anemia, the latter reflected by increased erythropoetin levels and cardiac output. In addition, all the carriers surprisingly had hematological and biosynthetic findings more usually associated with thalassemia trait. The structural change in Hb Crete only partly explains all the pathological manifestations of this variant, and other mechanisms are discussed.
AuthorsIoannis Papassotiriou, Joanne Traeger-Synodinos, Michael C Marden, Jean Kister, Dimitra Liapi, Danielle Prome, Alexandra Stamoulakatou, Henri Wajcman, Emmanuel Kanavakis
JournalBlood cells, molecules & diseases (Blood Cells Mol Dis) 2005 May-Jun Vol. 34 Issue 3 Pg. 229-34 ISSN: 1079-9796 [Print] United States
PMID15885607 (Publication Type: Case Reports, Journal Article)
Chemical References
  • Hemoglobins, Abnormal
  • hemoglobin Crete
  • Erythropoietin
  • Carbon Monoxide
Topics
  • Adult
  • Anemia (genetics)
  • Carbon Monoxide (metabolism)
  • Cardiac Output
  • Erythropoietin (blood)
  • Family Health
  • Female
  • Hemoglobins, Abnormal (genetics, metabolism)
  • Homozygote
  • Humans
  • Kinetics
  • Pedigree
  • Phenotype
  • Polycythemia (genetics)
  • Thalassemia

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