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Clinical and molecular diagnosis of a Costa Rican family with autosomal recessive myotonia congenital (Becker disease) carrying a new mutation in the CLCN1 gene
(Revista de Biología Tropical 56(1) p.1-11, 2006-08-18)
Myotonia congenita is a muscular disease characterized by myotonia, hypertrophy, and stiffness. It
is inherited as either autosomal dominant or recessive known as Thomsen and Becker diseases, respectively.
Here we confirm ...
Disease-associated CAG·CTG triplet repeats expand rapidly in non-dividing mouse cells, but cell cycle arrest is insufficient to drive expansion
(Nucleic Acids Research 42(11) p. 7047–7056, 2014-05-01)
Genetically unstable expanded CAG·CTG trinucleotide repeats are causal in a number of human disorders, including Huntington disease and myotonic dystrophy type 1. It is still widely assumed that DNA polymerase slippage ...
Enfermedad de Huntington infantil: reporte del primer caso en Costa Rica confirmado por análisis molecular
Infantile Huntington`s disease: first case in Costa Rica confirmed by molecular genetic analysis
(2016)
La enfermedad de Huntington (HD, por sus siglas
en inglés) es una enfermedad neurodegenerativa
progresiva, con una prevalencia en la población
caucásica de 10.6-13.7 casos por 100 000 habitantes.
La prevalencia de la ...
A polymorphism in the MSH3 mismatch repair gene is associated with the levels of somatic instability of the expanded CTG repeat in the blood DNA of myotonic dystrophy type 1 patients
(2016-04)
Somatic mosaicism of the expanded CTG repeat in myotonic dystrophy type 1 is age-dependent, tissuespecific and expansion-biased, contributing toward the tissue-specificity and progressive nature of the symptoms. Previously, ...
Parental age effects, but no evidence for an intrauterine effect in the transmission of myotonic dystrophy type 1
(European Journal of Human Genetics p.1-8, 2014-07-23)
Myotonic dystrophy type 1 (DM1) is caused by the expansion of an unstable CTG repeat (g.17294_17296(45_1000)) with more repeats associated with increased disease severity and reduced age at onset. Expanded disease-associated ...
Las mutaciones inestables, nuevo reto para el consejo genético de enfermedades hereditarias
Unstable mutations, new challenges for genetic counseling of inherited disorders
(Revista de Biología Tropical 52 (3) 491-499, 2004)
Las mutaciones inestables constituyen un tipo de alteración genética descubierta en Ia década de los noventa. En condiciones normales, regiones especificas de los genes estan constitudas por repeticiones de una aucencia ...
Mutaciones inestables: causa de algunas enfermedades neurológicas hereditarias
(1999-06)
Las mutaciones inestables o amplificación de tripletas constituyen un tipo de alteración genética descubierto durante la última década. En condiciones normales, regiones específicas de algunos genes están constituidas por ...
High levels of somatic DNA diversity at the myotonic dystrophy type 1 locus are driven by ultra-frequent expansion and contraction mutations
(Human Molecular Genetics, 2012, Vol. 21, No. 11 2450–2463, 2012-02-24)
Several human genetic diseases are associated with inheriting an abnormally large unstable DNA simple sequence
repeat. These sequences mutate, by changing the number of repeats, many times during the lifetime
of those ...
Somatic instability of the expanded CTG triplet repeat in myotonic dystrophy type 1 is a heritable quantitative trait and modifier of disease severity
(Human Molecular Genetics, 2012 Vol. 21, No. 16. 3558–3567, 2012-05-30)
Deciphering the contribution of genetic instability in somatic cells is critical to our understanding of many
human disorders. Myotonic dystrophy type 1 (DM1) is one such disorder that is caused by the expansion
of a CTG ...
Estudio intergeneracional de la mutación que causa la distrofia miotónica de tipo 1 en Costa Rica
Intergenerational study of the mutation that causes myotonic dystrophy type 1 in Costa Rica
(Revista de Neurología 2003; 36: 20-25, 2003-01-01)
Introduction. Myotonic dystrophy type 1 is a neuromuscular, degenerative and progressive disease, with an autosomal
dominant pattern of inheritance, variable eTressivity and incomplete penetrance. The genetic defect is ...