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  • Title: [Structural variants in hemoglobin occurring in the Czech Republic].
    Author: Indrák K, Brabec V, Divoký V, Fortová H, Suttnar J, Chrobák L, Wiedermann B, Huisman TH.
    Journal: Vnitr Lek; 1995 Jan; 41(1):13-20. PubMed ID: 7716887.
    Abstract:
    The authors present a review of clinical and laboratory findings of seven in the Czech Republic hitherto diagnosed structural haemoglobin variants. Unstable variants are found most frequently: Hb-Köln, Hb-St. Louis, Hb-Nottingham, Hb-E and Hb-Hradec Králové. The variant Hb-Hradec Králové (Hb-HK) or alpha 2 beta 2 115 (G17) Ala-Asp was newly detected. The great instability of Hb-HK chains makes classical diagnosis of Hb-pathy impossible. It was possible to identify it only at a molecular genetic level. A manifestation of Hb-HK instability is also the thalassaemic feature of the disease and the formation of Heinz bodies from free chains. The only representative of haemoglobins with a high oxygen affinity identified in this country was newly detected. It was given the name Hb-Olomouc or alpha 2 beta 2 86 (F2) Ala-Asp. This haemoglobin variant leads to erythrocytosis in father and son and the same clinical manifestations were recently described also in Japan. The last structural variant of haemoglobin found in this country is Hb-M Milwaukee or alpha 2 beta 2 67 (E11) Val-Glu which in our patients is manifested rather by haemolysis with formation of Heinz bodies than classical cyanosis. The cause of instability of Hb-M in our patients is not known. Hb-S was not diagnosed so far in the Czech Republic.
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