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| Cardoso,Greice Lemos; Takanashi,Silvania Yukiko Lins; Guerreiro,João Farias. |
| The most common hemoglobinopathies, viz, hemoglobins S and C, and α-and β-thalassemias, were investigated through the molecular screening of 116 subjects from the community of Saracura, comprising fugitive African slaves from farms of the municipality of Santarém, in the west of Pará State, Brazilian Amazon. The observed frequency of the HBB*S gene (0.9%) was significantly lower than that encountered in other Afro-derived communities in the region. Concomitantly, the absence of the HBB*C allele has been reported for most of the Afro-Amazonian communities thus far studied. As remnant populations of quilombos are generally small, the heterogeneous distribution of HBB*S and HBB*C alleles among them is probably due to genetic drift and/or founder effect. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sickle cell disease; Thalassemias; Afro-Amazonian. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000400002 |
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| Carvalhaes,Fernanda Andreza de Pinho Lott; Cardoso,Greice Lemos; Vallinoto,Antonio Carlos Rosário; Machado,Luiz Fernando; Ishak,Marluisa de Oliveira Guimarães; Ishak,Ricardo; Guerreiro,João Farias. |
| The distribution of genetic polymorphisms of chemokine receptors CCR5-delta32, CCR2-64I and chemokine (SDF1-3A) mutations were studied in 110 Human Immunodeficiency Virus type 1 (HIV-1) seropositive individuals (seropositive group) and 139 seronegative individuals (seronegative group) from the population of the northern Brazilian city of Belém which is the capital of the state of Pará in the Brazilian Amazon. The CCR5-delta32 mutation was found in the two groups at similar frequencies, i.e. 2.2% for the seronegative group and 2.7% for the seropositive group. The frequencies of the SDF1-3A mutation were 21.0% for the seronegative group and 15.4% for the seropositive group, and the CCR2-64I allele was found at frequencies of 12.5% for the seronegative... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: CCR5; CCR2; SDF-1; HIV-1 infection; Allele frequency; Brazilian Amazon. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000500004 |
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