Data/hora: 29/05/2024 06:02:27

Provedor de dados: | Genetics and Molecular Biology
País: | Brazil
Título: | H19DMR methylation analysis in patients with Beckwith-Wiedemann syndrome and isolated hemihyperplasia
Autores: | Gomes,Marcus Vinícius de Matos; Santos,Sílvio Avelino dos; Ramos,Ester Silveira.
Data: | 2005-01-01
Ano: | 2005
Palavras-chave: | Beckwith-Wiedemann syndrome; Isolated hemihyperplasia; Genomic imprinting; DNA methylation; Uniparental disomy; H19DMR.
Resumo: | Beckwith-Wiedemann syndrome (BWS) is a congenital overgrowth disorder of complex and heterogeneous etiology involving alterations in genomic imprinting. The cause of isolated hemihyperplasia (IHH) is unknown but might be due to partial or incomplete expression of BWS because both these conditions share predisposition for the same types of neoplasias. We investigated the methylation pattern of the putative imprinting control region H19DMR using peripheral blood from 12 patients, six with clinical features of BWS and six with IHH. All the patients had normal karyotypes and paternal uniparental disomy (UPD) was excluded in 10 informative cases. The normal H19DMR methylation pattern was found in eight informative patients, indicating that H19DMR methylation was not related to their condition. We suggest that the absence of neoplasias in the BWS and IHH patients studied might be related to the absence of UPD and to the presence of normal H19DMR methylation.
Tipo: | Info:eu-repo/semantics/other
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000200005
Editor: | Sociedade Brasileira de Genética
Relação: | 10.1590/S1415-47572005000200005
Formato: | text/html
Fonte: | Genetics and Molecular Biology  v.28 n.2 2005
Fonte: | info:eu-repo/semantics/openAccess