Molecular genotyping of G6PD mutations and Duffy blood group in Afro-descendant communities from Brazilian Amazon

Autor: Haiala S. Silva de Oliveira, Aylla N. Lima Martins da Silva, Gabriela Barreto Andrade, Karoline Coelho Gaia, Greice de Lemos Cardoso Costa, Ândrea K. Campos Ribeiro dos Santos, João Farias Guerreiro
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Genetics and Molecular Biology, Vol 41, Iss 4, Pp 758-765 (2018)
Druh dokumentu: article
ISSN: 1678-4685
DOI: 10.1590/1678-4685-gmb-2017-0253
Popis: Abstract Glucose-6-phosphate dehydrogenase deficiency (G6PDd) and Duffy-negative blood group are two red blood cells variants that confer protection against malaria. In this study, the distribution of the most common G6PD variants (G6PD*A-, GGPD*A and G6PD Mediterranean) and the major alleles of the Duffy blood group (FY*A, FY*B and FY*BES) were investigated in an Afro-descendant population from state of Pará, Brazilian Amazon. G6PD variants and Duffy blood group alleles were determined by TaqMan SNP genotyping assay. Overall, molecular genotyping revealed the presence of G6PD variants in 126 (24%) of the individuals studied (5% male and 19% female), and frequencies of the G6PD*A- and G6PD*A alleles were 0.061 and 0.104, respectively. Duffy blood group genotyping showed that 24.3% of people were Duffy-negative and 41.3% were heterozygous for FY*BES. The frequency of allele FY*BES was 41.0%. The results emphasize the need to monitor G6PD deficiency for the use of primaquine in the routine care of the Afro-descendant communities of the Trombetas, Erepecuru and Cumná rivers, evaluating the risks of hemolytic crisis in case of recurrence of malaria in the region. In addition, the possible greater protection against malaria conferred by these erythrocyte polymorphisms deserves to be better investigated and explored among these Afro-descendants.
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