Resumen

PROANO-MENESES, Josselyn Alejandra; MARDONES-MONTANARES, Marcela Alejandra  y  CHIRIBOGA-PONCE, Rosa F.. Estudio de la relación entre el grupo sanguíneo eritrocitario ABO con los niveles del factor von Willebrand en pacientes diagnosticados con la enfermedad. Acta bioquím. clín. latinoam. [online]. 2021, vol.55, n.3, pp.311-317. ISSN 0325-2957.

The presence or absence of antigens of the ABO system, among other factors, have been related to plasma levels of von Willebrand factor (VWF) due to its influence on proteolysis by ADAMTS 13. The activity of this erythrocyte system may influence on thrombotic or hemorrhagic events. The purpose of this study was to determine if the patients diagnosed with von Willebrand disease belonged to the O blood group and the VWF and FVIII levels were lower than those of the other blood groups. The blood group was identified by direct tube method and the VWF and FVIII were measured by coagulation tests. A total of 64 patients were analised, 29.4% were older than 40, 100% presented lower values of VWF than the non-O groups. A total of 64% of the patients presented a lower concentration of 6-49% in FVIII at the established normal range and 78.51% were typified as blood group O. Statistical analysis showed a statistically significant relationship between VWF levels and blood group. It was determined that there is a relationship between the ABO system and the VWF-FVIII (p<0.05). However, this does not mean that is the only cause of the existence of a low level of these factors. These data indicate the need for further studies in the population of patients with von Willebrand disease in order to determine the von Willebrand types and their relationship with the blood group.

Palabras clave : von Willebrand factor; Blood group; ABO system; FVIII.

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