1995
DOI: 10.1136/jmg.32.7.519
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Ascertainment of myotonic dystrophy through cataract by selective screening.

Abstract: Myotonic dystrophy (DM) almost always results from the expansion of an unstable (CTG)n repeat. The mutation can be detected directly. Affected patients with cat-

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Cited by 25 publications
(24 citation statements)
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“…The control of alternative splicing patterns by MBNL1 has now been implicated in the negative regulation of pluripotency in mouse embryonic stem cells, giving it a central role in the determination of cell fate during early stages of differentiation [11]. Pre--senile cataracts are almost always the first and sometimes the only sign of DM1 [12] although the specific pathogenic pathway that results in cataract development has yet to be determined. The related condition, Myotonic dystophy type 2 (DM2) is caused by a CCTG repeat in intron 1 of Zinc Finger Protein 9 (ZNF9) gene on chromosome 3q21 [13].…”
Section: Introductionmentioning
confidence: 99%
“…The control of alternative splicing patterns by MBNL1 has now been implicated in the negative regulation of pluripotency in mouse embryonic stem cells, giving it a central role in the determination of cell fate during early stages of differentiation [11]. Pre--senile cataracts are almost always the first and sometimes the only sign of DM1 [12] although the specific pathogenic pathway that results in cataract development has yet to be determined. The related condition, Myotonic dystophy type 2 (DM2) is caused by a CCTG repeat in intron 1 of Zinc Finger Protein 9 (ZNF9) gene on chromosome 3q21 [13].…”
Section: Introductionmentioning
confidence: 99%
“…Há muito tempo a catarata é considerada um dos principais indicadores da presença do gene mutado da DM em parentes assintomáticos de pacientes com a doença, e o reconhecimento de que a catarata pode ser a única manifestação clínica serviu como uma das primeiras evidências de que a DM seria uma doença autossômica dominante (10)(11)(12)(19)(20) . Acredita-se que, inicialmente, a catarata da DM consista em opacidades puntiformes, iridescentes, brancas e/ou policromáticas, localizadas principalmente na região da cápsula posterior, preservando a porção central da lente, progredindo para o tipo de catarata em roseta, com espículas radiais, adquirindo, então, aspecto reticular no córtex do cristalino.…”
Section: Discussionunclassified
“…Inicialmente, a seleção dos pacientes seguiria os seguintes critérios: (1) pacientes com menos de 55 anos de idade, com catarata bilateral e sem fator precipitante demonstrável, exceto diabete melito tipo 2; (2) pacientes de qualquer idade com cristais policromáticos (10) . No entanto, não foi possível incluir o segundo critério devido a limitações de descrição da alteração do cristalino no prontuário médico, visto que se tratou de uma seleção retrospectiva.…”
Section: Métodosunclassified
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