idade materna e síndrome de down no nordeste do brasil maternal age and down syndrome in northeast brazil

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ID: 248864
2003
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Abstract
Analisa-se, aqui, a associação entre idade materna avançada para procriação e aumento da incidência de progênie com síndrome de Down em amostra populacional do Estado da Bahia. Compararam-se as idades das mães de 220 portadores de síndrome de Down ao grupo-controle composto por mães de mesmo número de nascidos vivos, sem a síndrome de Down. Estimou-se em 43,6% o percentual de síndrome de Down dependente da idade materna indicando uma alta correlação (r = 0,95) entre idade materna e síndrome de Down. Este componente foi, entretanto, significantemente menor do que o percentual de 75% referido na literatura. Estimou-se o componente independente da idade materna em 56,4%, evidenciando a importância de outros fatores, no processo de não-disjunção meiótica associada à trissomia 21. Os resultados encontrados mostram também que, não obstante as características próprias da Região Nordeste, os fatores dependentes e independentes da idade materna apresentam a mesma tendência de distribuição observada na Região Sudeste do Brasil, onde extensivos estudos têm sido realizados.
This study analyzes the association between advanced maternal age and increased incidence of Down syndrome in neonates, based on a population sample from the State of Bahia in Northeast Brazil. Age of the mothers of 220 Down syndrome subjects was investigated, and age distribution was compared to that of the population control group, 220 mothers of subjects without Down syndrome. The proportion of Down syndrome infants dependent on advanced maternal age was estimated at 43.6%, thus showing a high correlation (r = 0.95) between advanced maternal age and Down syndrome incidence. However, this component was significantly lower than the 75% reported in the literature. The component independent of maternal age was estimated at 56.4%, indicating the action of other factors on meiotic non-disjunction associated with 21 trisomy. The results also indicate that despite the regional characteristics of Northeast Brazil, factors both dependent and independent of maternal age show the same distribution observed in Southeast Brazil, where extensive studies have been performed.
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Authors ;Fábio A. F. Gusmão;Eraldo J. M. Tavares;Lília Maria de Azevedo Moreira
Journal iberian conference on information systems and technologies, cisti
Year 2003
DOI
10.1590/S0102-311X2003000400020
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-311X2003000400020
Keywords
down syndrome maternal age trisomymedicinepublic aspects of medicine

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