Artículos de revistas
Ringo: Discordance between the molecular and clinical manifestation in a Golden Retriever Muscular Dystrophy dog
Fecha
2010Registro en:
NEUROMUSCULAR DISORDERS, AMSTERDAM, v.20, n.1, p.64-70, JAN, 2010
0960-8966
10.1016/j.nmd.2009.10.011
Autor
ZUCCONI, Eder
VALADARES, Marcos Costa
VIEIRA, Natassia M.
BUENO JR., Carlos R.
SECCO, Mariane
JAZEDJE, Tatiana
SILVA, Helga Cristina Almeida da
VAINZOF, Mariz
ZATZ, Mayana
Institución
Resumen
Of the various genetic homologues to Duchenne Muscular Dystrophy (DMD), the Golden Retriever Muscular Dystrophy (GRMD) dog, which presents a variable but usually severe and progressive muscle weakness, has the closest relevance to DMD in both clinical severity and histopathological change. Among 77 GRMD dogs born in our colony in Brazil, we have identified a very mildly affected dog, Ringo, born July 2003. Among his descendants, at least one male, Suflair, is also showing a mild course. In an attempt to better characterize these two dogs, we studied the pattern of muscle proteins expression in Ringo and Suflair, as compared to severely affected and normal control dogs. Dystrophin was absent in both and utrophin was overexpressed in a pattern similar to the observed in severely affected dogs. Understanding the mechanism that is protecting Ringo and Suflair from the deleterious effect of the dystrophin gene mutation is of utmost interest, In addition it points out that the clinical impact of therapeutic trials should be interpreted with caution. (C) 2009 Elsevier B.V. All rights reserved.