ABSTRACT
ßS-Globin haplotypes were studied in 80 (160 ßS chromosomes) sickle cell disease patients from Salvador, Brazil, a city with a large population of African origin resulting from the slave trade from Western Africa, mainly from the Bay of Benin. Hematological and hemoglobin analyses were carried out by standard methods. The ßS-haplotypes were determined by PCR and dot-blot techniques. A total of 77 (48.1 percent) chromosomes were characterized as Central African Republic (CAR) haplotype, 73 (45.6 percent) as Benin (BEN), 1 (0.63 percent) as Senegal (SEN), and 9 (5.63 percent) as atypical (Atp). Genotype was CAR/CAR in 17 (21.3 percent) patients, BEN/BEN in 17 (21.3 percent), CAR/BEN in 37 (46.3 percent), BEN/SEN in 1 (1.25 percent), BEN/Atp in 1 (1.25 percent), CAR/Atp in 6 (7.5 percent), and Atp/Atp in 1 (1.25 percent). Hemoglobin concentrations and hematocrit values did not differ among genotype groups but were significantly higher in 25 patients presenting percent fetal hemoglobin ( percentHbF) > or = 10 percent (P = 0.002 and 0.003, respectively). The median HbF concentration was 7.54 ± 4.342 percent for the CAR/CAR genotype, 9.88 ± 3.558 percent for the BEN/BEN genotype, 8.146 ± 4.631 percent for the CAR/BEN genotype, and 4.180 ± 2.250 percent for the CAR/Atp genotype (P = 0.02), although 1 CAR/CAR individual presented an HbF concentration as high as 15 percent. In view of the ethnic and geographical origin of this population, we did not expect a Hardy-Weinberg equilibrium for CAR/CAR and BEN/BEN homozygous haplotypes and a high proportion of heterozygous CAR/BEN haplotypes since the State of Bahia historically received more slaves from Western Africa than from Central Africa
Subject(s)
Humans , Male , Female , Anemia, Sickle Cell , Fetal Hemoglobin , Globins , Haplotypes , Anemia, Sickle Cell , Benin , Brazil , Central African Republic , Fetal Hemoglobin , Genotype , Immunoblotting , Polymerase Chain Reaction , SenegalABSTRACT
Com o objetivos de estudar os aspectos laboratoriais, através da determinaçäo do fibrinogênio plasmático, proteína total plasmática, aspartato e alanina aminostransferases séricas, e bilirrubinas séricas total, direta e indireta, utilizaram-se 20 caprinos mestiços, clinicamente sadios, de ambos os sexos, com dez meses de idade e, com peso vivo médio de oito quilogramas. Os animais foram divididos aleatoriamente em dois grupos de dez: grupo "A", controle e grupo "B", experimental. Nos animais deste último grupo foram inoculados cinco mililitros, via intraperitoneal, de cultura de Leptospira interrogans sorotipo pomona (estirpe M7/87), previamente preparada. Inicialmente, as amostras sanguíneas foram colhidas a partir do 3§ dia após inoculaçäo, em intervalos de quatro dias, entre o 3§ e 15§ dia, passando para seis dias do 16§ ao 44§ dia, e finalmente para sete dias entre o 45§ e 93§ dia. A análise estatística revelou significância a nível de 5 por cento para a bilirrubina total e direta, enquanto para as demais variáveis näo houve diferenças significativas entre os tratamentos