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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

Morales Montero, Fernando; Cuenca Berger, Patricia; del Valle Carazo, Gerardo; Vásquez Cerdas, Melissa; Brian Gago, Roberto; Sittenfeld Appel, Mauricio; Johnson, Keith; Lin, Xi; Ashizawa, Tetsuo (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 ...

Parental age effects, but no evidence for an intrauterine effect in the transmission of myotonic dystrophy type 1

Morales Montero, Fernando; Vásquez Cerdas, Melissa; Cuenca Berger, Patricia; Campos Ramírez, Domingo; Santamaría Ulloa, Carolina; del Valle Carazo, Gerardo; Brian Gago, Roberto; Sittenfeld Appel, Mauricio; Monckton, Darren G. (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 ...

Somatic instability of the expanded CTG triplet repeat in myotonic dystrophy type 1 is a heritable quantitative trait and modifier of disease severity

Higham, Catherine; Hogg, Grant; Braida, Claudia; del Valle Carazo, Gerardo; Brian Gago, Roberto; Sittenfeld Appel, Mauricio; Ashizawa, Tetsuo; Wilcox, Alison; Couto, Jillian M.; Morales Montero, Fernando; Cuenca Berger, Patricia; Wilson, Richard H.; Adam, Berit; Wilcox, Dougals E.; Monckton, Darren G. (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

Morales Montero, Fernando; Cuenca Berger, Patricia; Brian Gago, Roberto; Sittenfeld Appel, Mauricio; del Valle Carazo, Gerardo (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 ...

Diagnóstico molecular de la distrofia miotónica (DM) en Costa Rica

Morales Montero, Fernando; Cuenca Berger, Patricia; Brian Gago, Roberto; Sittenfeld Appel, Mauricio; del Valle Carazo, Gerardo (Acta Medica Costarricense :43 (4) p. 159-167, 2001-10)

La Distrofia Miotónica es una enfermedad multisistémica de herencia autosómica dominante. El defecto molecular es una expansión del trinucleótido CTG presente en Ia región 3' no codificante (3' UTR) del gen DMPK, localizado ...