alexa Cytogenetics of genetic counseling patients in Pelotas, Rio Grande do Sul, Brazil.
Genetics & Molecular Biology

Genetics & Molecular Biology

Journal of Molecular and Genetic Medicine

Author(s): Duarte AC, Cunha E, Roth JM, Ferreira FL, Garcias GL,

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Abstract From 1986 to 2002, we examined the chromosomal composition of 916 patients attended by two genetic counseling services in the city of Pelotas, in the Brazilian State of Rio Grande do Sul, to determine the genetic causes of their disturbances. Patterns of G-banding using trypsin and Giemsa (GTG) and C-banding using barium and Giemsa (CBG) were studied using phytohemagglutinin M-stimulated lymphocytes cultured from peripheral blood. Among the patients, 110 had Down's syndrome, 7 had Edward's syndrome, 4 had Patau's syndrome, 29 had Turner's syndrome, 5 had Klinefelter's syndrome, and 3 had "cri-du-chat" syndrome. Abnormal chromosomes were observed in 29.3\% of the patients. Most of these (56.3\%) were numerical abnormalities, with the remaining being structural variants.
This article was published in Genet Mol Res and referenced in Journal of Molecular and Genetic Medicine

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