Williams Syndrome
Mostrando 13-24 de 69 artigos, teses e dissertações.
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13. Análise de marcadores moleculares para o diagnóstico da síndrome de Williams-Beuren / Analysis of microsatellite DNA markers in the diagnosis of Williams- Beuren syndrome
INTRODUCTION: Williams-Beuren syndrome (WBS; OMIM 194050) is caused by hemizygous contiguous gene microdeletions at 7q11.23. Typical facies, supravalvular aortic stenosis (SVAS), mental retardation, overfriendliness and hiperacusis comprise typical symptoms in WBS. The most common deletion is 1.55 Mb, however 1.84 Mb deletion also has been described. Althoug
Publicado em: 2011
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14. Caracterização de habilidades lingüísticas de crianças e adolescentes com Síndrome de Williams-Beuren
A Síndrome de Williams-Beuren (SWB) é uma afecção genética determinada pela microdeleção de genes contíguos em 7q11.23. O perfil cognitivo da SWB é conhecido pelo prejuízo viso-construtivo que contrasta com melhor desempenho em tarefas verbais, o que sustenta a hipótese de dissociação entre essas habilidades, conferindo a esta síndrome um quadr
Publicado em: 2010
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15. Comparação dos fenótipos comportamentais de crianças e adolescentes com síndrome de Prader-Willi, síndrome de Williams-Beuren e síndrome de Down
There are few studies in Brazil that comprise the theme of behavioral phenotypes in people with genetic syndromes. The knowledge of behavioral patterns associated with such syndromes contributes to the planning of standardized therapeutic assessment, intervention and handling strategies, and for an improvement in assistance practices. This study presents thr
Publicado em: 2009
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16. Fluorescent in situ hybridization (FISH) as a diagnostic tool for Williams-Beuren syndrome
Fluorescent in situ hybridization (FISH) with commercial probes covering the elastin gene (ELN) was used to determine the frequency of the 7q11.23 deletion in 18 children clinically diagnosed with Williams-Beuren syndrome (WBS). A de novo deletion was detected in 15 of the children (83%). Diagnostic investigation for WBS started late in childhood (median = 5
Genetics and Molecular Biology. Publicado em: 2007
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17. Análise de polimorfismos do gene da fibrilina-1 em indivíduos portadores de hérnia inguinal através do seqüenciamento de DNA / Polymorphisms analysis of the fibrillin-1 gene in individuals with inguinal hernia by DNA sequencing
The inguinal hernia is a multifactorial disease that emerge from the Fruchaud orifice, closed only by the transversalis fascia. Lately it has been showed that disorders on the connective tissue elements, as the collagen and elastic fibers, are related to the inguinal hernia genesis. Previous studies have showed structural and quantitative changes of the elas
Publicado em: 2007
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18. Estudo de marcadores polimórficos da região 7q11.23 para o diagnóstico da síndrome de Williams-Beuren / Williams-Beuren syndrome: molecular diagnoses using polimorphic markers to 7q11.23 region
INTRODUÇÃO: A síndrome de Williams-Beuren (SWB) resulta de uma deleção de aproximadamente 1.5 Mb na região 7q11.23. A haploinsuficiência ocasiona alterações do desenvolvimento neurológico assim como malformações em múltiplos sistemas. OBJETIVOS: Testar utilidade de marcadores polimórficos para o diagnóstico da síndrome, determinar a proporç�
Publicado em: 2006
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19. Williams-Beuren syndrome: cardiovascular abnormalities in 20 patients diagnosed with fluorescence in situ hybridization
OBJECTIVE: To evaluate the cardiovascular findings and clinical follow-up of patients with Williams-Beuren syndrome. METHODS: We studied 20 patients (11 males, mean age at diagnosis: 5.9 years old), assessed for cardiovascular abnormalities with electrocardiography and Doppler echocardiography. Fluorescence in situ hybridization (FISH) was used to confirm th
Arquivos Brasileiros de Cardiologia. Publicado em: 2003-11
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20. Arterial Hypertension in a Child with Williams-Beuren Syndrome (7q11.23 Chromosomal Deletion)
We report the case of a 7-year-old male child diagnosed with Williams-Beuren syndrome and arterial hypertension refractory to clinical treatment. The diagnosis was confirmed by genetic study. Narrowing of the descending aorta and stenosis of the renal arteries were also diagnosed. Systemic vascular alterations caused by deletion of the elastin gene may occur
Arquivos Brasileiros de Cardiologia. Publicado em: 2002-08
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21. Unbalanced 13;18 translocation and Williams syndrome.
A 2 1/2 year old girl is reported with a de novo 13;18 unbalanced translocation and the facial features of Williams syndrome, subaortic stenosis, failure to thrive, and developmental delay. This case provides two candidate locations for the underlying molecular pathology of this sporadic syndrome. Williams syndrome is associated with intellectual and growth
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22. A terminal deletion of the long arm of chromosome 4 [46,XX,del(4)(q33)] in an infant with phenotypic features of Williams syndrome.
A female infant with peripheral pulmonary artery stenosis, growth retardation, and developmental delay was noticed to have facial features consistent with a diagnosis of Williams syndrome. Chromosome analysis revealed a deletion of the terminal portion of the long arm of chromosome 4 (4q33----qter). This is the seventh reported case of this chromosome disord
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23. De novo t(X;21)(q28;q11) in a girl with phenotypic features of Williams-Beuren syndrome.
We describe a female infant with mental retardation and some of the phenotypic features of Williams-Beuren syndrome. Chromosome analysis showed t(X;21)(q28;q11). Diagnosis, inactivation of the X chromosome, and possible involvement of the translocation breakpoints in the pathogenesis of this syndrome are discussed.
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24. Generation and Comparative Analysis of ∼3.3 Mb of Mouse Genomic Sequence Orthologous to the Region of Human Chromosome 7q11.23 Implicated in Williams Syndrome
Williams syndrome is a complex developmental disorder that results from the heterozygous deletion of a ∼1.6-Mb segment of human chromosome 7q11.23. These deletions are mediated by large (∼300 kb) duplicated blocks of DNA of near-identical sequence. Previously, we showed that the orthologous region of the mouse genome is devoid of such duplicated segments
Cold Spring Harbor Laboratory Press.