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Rehabilitación (Madr., Ed. impr.) ; 43(4): 144-150, jul.-ago. 2009. ilus, tab
Artigo em Espanhol | IBECS | ID: ibc-72987

RESUMO

Introducción. La distrofia miotónica congénita es una enfermedad multisistémica de herencia autosómica dominante, heredada generalmente a través de la madre, y que se caracteriza porque al nacimiento, el recién nacido presenta hipotonía, problemas respiratorios y alimenticios, debilidad facial y general. Objetivos. Estudio descriptivo de nuestra experiencia en la distrofia miotónica congénita. Pacientes y métodos. Se estudiaron 12 pacientes con distrofiamiotónica congénita, pertenecientes a 9 familias donde las madres eran portadoras de la enfermedad, y se analizaron las características clínicas, electromiográficas y genéticas. Resultados. El retraso motor era manifiesto en todos los pacientes, así como el retraso intelectual, la disartria y la voz nasal. Los niños afectados presentaban más de 1.500 repeticiones del trinucleótido citosina-timina-guanina del cromosoma 19 determinadas por la técnica de Southern Blot. Las alteraciones electromiográficas de tipo miopático estaban presentes en todos ellos. La biopsia muscular realizada a 8 pacientes mostraba atrofia y predominio de fibras tipo 1 con núcleos centrales e hipertrofia de fibras tipo 2. Conclusión. Es necesario sospechar la distrofia miotónicaante casos de recién nacidos con hipotonía, en madres conhistoria de abortos o recién nacidos muertos. Una vez superados los primeros años de vida, su desarrollo es similar al dela distrofia miotónica del adulto. Es fundamental realizar el estudio genético a los afectados y portadores de esta enfermedad (AU)


Introduction. Congenital myotonic dystrophyis an autosomal dominant inherited generally transmitted multisystemic disease that is generally inherited through themother. It is characterized by the birth the newborn baby with hypotonia, respiratory and nutritional problems, and facial and general weakness. Objective. Descriptive study of our experience in congenital myotonic dystrophy. Patients and methods. Twelve patients with congenital myotonicdy strophy, belonging to 9 families in which the mother was a carrier of the disease have been studied. The clinical, electromyographic and genetic characteristics of their familieswere analyzed. Results. Motor retardation as well as the intellectual retardation,dysarthria and nasal voice was clear in all the patients.The affected children had more than 1,500 repetitions of the cytosine-thymine-guanine (CTG) trinucleotide on chromosome 19 determined by the Southern Blot technique. Myopathictype alterations were found in the electromyographsof all of the subjects. The muscular biopsy done in 8 patients showed atrophy and predominance of type 1 fibers with centralnuclei and type 2 fiber hypertrophy. Conclusion. Myotonic dystrophy should be suspected incases of newborn babies with hypotonia, in mothers with a back ground of abortions or stillborn babies. After surviving the first years of life, their development is similar to the myotonicdy strophy of the adult. It is fundamental to perform agenetic study in those who are affected by or carriers of the disease (AU)


Assuntos
Humanos , Masculino , Feminino , Lactente , Pré-Escolar , Criança , Adolescente , Adulto , Distrofia Miotônica/congênito , Distrofia Miotônica/diagnóstico , Eletrofisiologia/métodos , Miopatias Congênitas Estruturais/complicações , Miopatias Congênitas Estruturais/diagnóstico , Miopatias Congênitas Estruturais/terapia , Transtornos Miotônicos/congênito , Transtornos Miotônicos/epidemiologia , Paralisia Cerebral/complicações , Paralisia Cerebral/diagnóstico , Distrofia Miotônica/fisiopatologia , Distrofia Miotônica/complicações , Distrofia Miotônica/radioterapia , Paralisia Cerebral/fisiopatologia
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