Caracterização do fenótipo comportamental e de linguagem na síndrome de Williams-Beuren
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Data
2010-03-30
Autores
Rossi, Natalia Freitas [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
A síndrome de Williams-Beuren (SWB) é um distúrbio neurodesenvolvimental causado por uma deleção hemizigótica de 1.5Mb na região cromossômica 7q11.23. Essa síndrome é reconhecida pelo comportamento sociável com fala fluente e favorecimento das habilidades auditivas se comparadas às visuais. O objetivo deste estudo foi caracterizar o fenótipo comportamental e da linguagem na SWB. A casuística geral desta pesquisa foi formada por 40 indivíduos com diagnóstico da SWB, positivos para a deleção do gene da Elastina na região cromossômica 7q11.23 confirmado pela técnica de Hibridização in situ por Fluorescência (FISH), sendo 30 falantes do Português do Brasil e 10 falantes do Português de Portugal. Também foram avaliados 30 indivíduos controles falantes do Português do Brasil e 10 falantes do Português de Portugal. Para responder ao objetivo, a pesquisa foi dividida em 3 estudos. O objetivo do estudo 1 foi investigar problemas comportamentais de crianças e adolescentes com a SWB, identificados pelos pais e correlacioná-los ao desempenho intelectual e de linguagem. No estudo 2, o objetivo foi caracterizar o perfil da fluência da fala em indivíduos com a SWB na situação de narrativa, comparando-os com indivíduos com desenvolvimento típico de linguagem e idade mental. O objetivo do estudo 3 foi comparar o desempenho de indivíduos com SWB com controles semelhantes por idade mental e cronológica em tarefas auditivas e visuais, além de investigar o perfil de habilidades auditivas comparadas às visuais. Foi aplicado o inventário comportamental Child Behavior Checklist (CBCL/6-18 anos), provas e testes de linguagem para o estudo 1. Foram aplicadas tarefas em situação de narrativa, com apresentação de figura de ação e figuras sequenciais para análise da fluência no estudo 2. O Teste Illinois de Habilidades Psicolinguísticas foi utilizado...
Williams-Beuren syndrome (WBS) is a neurodevelopmental disorder caused by a hemizygous deletion of 1.5Mb in chromosome region 7q11.23. WBS phenotype has been described as social behavior, fluent speech and superior auditory abilities despite visuospatial impairments. The purpose of this study was to characterize the WBS behavioral and language phenotype. The present study was composed of 40 WBS, positive for Elastin gene deletion on chrosome 7q11.23 confirmed by Fluorescent in Situ Hybridization (FISH), involving 30 Portuguese speakers from Brazil and 10 Portuguese speakers from Portugal. Thirty typically development Portuguese speakers' individuals from Brazil and 10 from Portugal were also involved. To meet the goal, three studies were conducted in this research. In the study 1 the purpose was to investigate behavioral problems according to WBS parents report and to correlate it with the intellectual and language performance. The purpose of the study 2 was to characterize the speech fluency profile of WBS individuals in narrative task and compare to typically development and finally in study 3, was to compare performance of individuals with WBS to chronological aged-matched and mental age matched group on auditory and visual processing. The Child Behavior Checklist (CBCL/6-18 years old) and language tests were applied for study 1. In the study 2, a single-picture and a picture-sequence were applied to assess narrative and speech fluency profile. The Illinois Test of Psycholinguistic Abilities was study 3. Results showed that social and attention problems were mentioned by WBS' parents. The correlation analysis suggested that behavioral problems identified by parents were more directly related to language performance (Study 1). Significant differences were observed in speech fluency profile, especially on common breakdowns (non-stuttered) and pauses often more frequently in the WBS group... (Complete abstract click electronic access below)
Williams-Beuren syndrome (WBS) is a neurodevelopmental disorder caused by a hemizygous deletion of 1.5Mb in chromosome region 7q11.23. WBS phenotype has been described as social behavior, fluent speech and superior auditory abilities despite visuospatial impairments. The purpose of this study was to characterize the WBS behavioral and language phenotype. The present study was composed of 40 WBS, positive for Elastin gene deletion on chrosome 7q11.23 confirmed by Fluorescent in Situ Hybridization (FISH), involving 30 Portuguese speakers from Brazil and 10 Portuguese speakers from Portugal. Thirty typically development Portuguese speakers' individuals from Brazil and 10 from Portugal were also involved. To meet the goal, three studies were conducted in this research. In the study 1 the purpose was to investigate behavioral problems according to WBS parents report and to correlate it with the intellectual and language performance. The purpose of the study 2 was to characterize the speech fluency profile of WBS individuals in narrative task and compare to typically development and finally in study 3, was to compare performance of individuals with WBS to chronological aged-matched and mental age matched group on auditory and visual processing. The Child Behavior Checklist (CBCL/6-18 years old) and language tests were applied for study 1. In the study 2, a single-picture and a picture-sequence were applied to assess narrative and speech fluency profile. The Illinois Test of Psycholinguistic Abilities was study 3. Results showed that social and attention problems were mentioned by WBS' parents. The correlation analysis suggested that behavioral problems identified by parents were more directly related to language performance (Study 1). Significant differences were observed in speech fluency profile, especially on common breakdowns (non-stuttered) and pauses often more frequently in the WBS group... (Complete abstract click electronic access below)
Descrição
Palavras-chave
Williams Beuren, Sindrome de, Fenotipo, Cognição, Linguagem, Behavior, Language
Como citar
ROSSI, Natalia Freitas. Caracterização do fenótipo comportamental e de linguagem na síndrome de Williams-Beuren. 2010. 178 f. Tese (doutorado) - Universidade Estadual Paulista, Instituto de Biociências de Botucatu, 2010.