Triagem de hemoglobinopatias em doadores de sangue de Caxias do Sul, Rio Grande do Sul, Brasil: prevalência em área de colonização italiana

The high prevalence of beta thalassemia among Italians and their participation in the ethnic formation of Caxias do Sul, Rio Grande do Sul State, Brazil, and neighboring cities prompted us to investigate hemoglobinopathies in 608 blood donors at the Caxias do Sul Regional Blood Center. Despite the e...

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Bibliographic Details
Authors: Lisot, Cristina Lucia Alberti, Silla, Lúcia Mariano da Rocha
Format: article
Status:Published version
Publication Date:2004
Country:Brasil
Institution:Fundação Oswaldo Cruz (FIOCRUZ)
Repository:Cadernos de Saúde Pública
Language:Portuguese
OAI Identifier:oai:ojs.teste-cadernos.ensp.fiocruz.br:article/2304
Online Access:https://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/2304
Access Level:Open access
Keyword:Hemoglobinopatias
Doadores de Sangue
Eletroforese
Description
Summary:The high prevalence of beta thalassemia among Italians and their participation in the ethnic formation of Caxias do Sul, Rio Grande do Sul State, Brazil, and neighboring cities prompted us to investigate hemoglobinopathies in 608 blood donors at the Caxias do Sul Regional Blood Center. Despite the ethnic influence, abnormal hemoglobin levels were found in only 1.81% of the donors (0.16% Hb AC, 0.99% Hb AS, and 0.66% Hb AH), similar to the levels observed in a study on qualitative disorders conducted in the rural area of Rio Grande do Sul. In our setting, the most commonly used screening tests for thalassemia, combined with DNA sequencing, were unable to detect quantitative hemoglobin synthesis disorders. This may be attributable to still-unknown genetic disorders, technical limitations, or simply to miscegenation.