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Please use this identifier to cite or link to this item: http://repositorio.ufba.br/ri/handle/ri/13881

Title: Clinical and molecular characteristics of sickle cell anemia in the northeast of Brazil
Other Titles: Genetics and Molecular Biology
Authors: Adorno, Elisângela Vitória
Zanette, Angela Maria Dias
Lyra, Isa Menezes
Seixas, Magda Oliveira
Reis, Mitermayer Galvão
Gonçalves, Marilda Souza
Keywords: Alpha-thalassemia 2 gene 3.7 kb deletion (-α23.7 kb thal);βS-globin gene haplotypes;Fetal hemoglobin
Issue Date: 2008
Abstract: Beta S-globin gene (βS-globin) haplotypes, markers for severe sickle cell anemia (SCA), and the alpha-thalassemia 2 gene 3.7 kb deletion (-α23.7 kb thal) along with demographic and clinical data were investigated in SCA outpatients (n = 125, 63 female and 62 male) in the Brazilian state of Bahia, which has a high prevalence SCA. PCR-RFLP showed that the Central African Republic/Benin (CAR/BEN, 51.2%) haplotype was most frequent, followed by the Benin/Benin (Ben/Ben, 28.8%). At least one CAR haplotype was present in every outpatient with a history of cerebrovascular accident. The Cameroon (Cam), Senegal (Sen) and Arab-India haplotypes occurred in small numbers, as did atypical haplotypes. Fetal hemoglobin (HbF, %) was unevenly distributed. Compared to those > 18 y, those aged < 18 y had had fewer erythrocyte transfusions and high HbF levels (12.3% ± 7.01 to 7.9% ± 4.36) but a higher frequency of spleen sequestration and pneumonia. Compared with normal α - genes carriers values, the outpatients with -α23.7 kb thal (determined by PCR analysis) had significantly higher mean hemoglobin concentration (Hb) (8.3 ± 1.34 g/dL, p = 0.018) and packed cell volume (PCV = 27.1% ± 4.26, p = 0.019) but low mean corpuscular volume (MCV = 86.1 fL = 10-15 L ± 9.56, p = 0.0004) and mean corpuscular hemoglobin (MCH = 26.6% ± 4.60, p = 0.039).
Description: p. 621-625
URI: http://repositorio.ufba.br/ri/handle/ri/13881
ISSN: 1415-4757
Appears in Collections:Artigos Publicados em Periódicos (Biologia)

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