Muscular dystrophies are a group of genetic conditions characterized by progressive muscle weakness and wasting (atrophy). The Duchenne and Becker types. La distrofia muscular de Duchenne y Becker es la miopatía más común en ni ños y es causada por la ausencia de la proteína distrofina. Los afectados. 23 Mar Primeros datos basados en la población acerca de la prevalencia de las distrofias musculares de Duchenne y de Becker en los Estados.

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In most cases, symptomatic carrier women present deletions of exons in only one of the X chromosomes; therefore, if the same exon is normal in the other chromosome, amplification will occur.

Duchenne and Becker’s muscle dystrophy: A molecular vision

Am J Hum Genet ; It is possible that by using leukocytes we were not able to find deletions caused by somatic mosaicism or germ-line cells Relatively low proportion of dystrophin gene deletions in Israeli Duchenne and Becker muscular dystrophy patients. Hum Genetics ; The consent to realize the muscle biopsy and DNA tests was obtained in the out-patient clinic or during hospital admission for diagnostic investigation.

Moreover, genetic counseling and pre-natal diagnosis, together with the application of new therapies based on the knowledge of the disease’s pathogenesis, are now a possibility. Las deleciones se concentran en dos regiones del gen, que son puntos calientes o “hot spots”: Add to My Bibliography.

La distrofia muscular ha sido reflejada en la literatura, el cine y la television. Worton R, Gillard E. An Introduction to electromyography.

Muscular dystrophy has been portrayed quite realistically in literature, cinema and television, and Duchenne’s muscular dystrophy is the clinical variety that has been shown most often. Implications for local and regional Molecular Diagnosis Programs.

[Muscular dystrophies in literature, cinema and television]. – PubMed – NCBI

Am J Med Genet ; The isolation of the defective gene has led to a better understanding of the disease process and has allowed an accurate diagnosis of affected patients. Duchenne muscular dystrophy, Becker muscular dystrophy, immunohistochemistry, PCR, deletions, exons.


Our failure to find deletions in female patients is probably a consequence of the methodology used, as the amplification endpoint was analyzed and there is some correlation with the amount becket initial DNA used. Distrofia muscular de Duchenne e Becker: The complete sequence of dystrophin predicts a rod-shaped cytoeskeletal protein.

In these cases there are differences in the intensity of the symptoms J Biomed Biotechnol ;2: Aspects that have been reflected include its symptoms, progression, prognosis, the role of the family and caregivers, sexuality, palliative care, patients’ will to overcome difficulties and the need to raise society’s awareness of the condition and to invest more resources in research.

In the present study, however, we used DNA extracted from leukocytes. These fifty one samples were freshly frozen and cut on cryostat into 8-micron sections and stained with hematoxylin-eosin, modified Gomori trichrome, oil-red O, PAS, cresyl violet and Sirius red. Colomb Med ; diztrofia The human dystrophin gene requires 16 hours to be transcribed and is cotranscriptionally spliced. Genome Biol ; 2: Topography of the Duchenne muscular didtrofia DMD gene: MSc, Profesor Auxiliar, Lic.

Fifteen patients shared deletions in both hot-spot regions. Transcription of the dystrophin gene in human muscle and-non-muscle tissues. We detected at least one deletion in the 20 dystrophin-gene exons analyzed in 76 cases Some had the DNA analysis before normal or during the work-up investigation simultaneously muscle biopsy and blood draw for DNA analysis. Rev Neurol ; Immunoelectron microscopic localization of distrophin in myofibres.

Becker muscular dystrophy-related cardiomyopathy: a favorable response to medical therapy.

Fast and sensitive silver staining of DNA in polyacrylamide gels. Am J Med Genet ; These cases with normal PCR were submitted to muscle xe, as were other cases, for which exon deletions had been detected. Two had severe denervation in the muscle biopsy compatible with spinal muscular atrophy SMA ; one had beckeer in distrifia fibers compatible with congenital myopathy; two had sarcoglycan deficiency; and seven had alterations compatible with muscular dystrophy but had normal immunohistochemistry unclassified limb-girdle muscular dystrophy Table 2.


Clin Genet ; A total of deletions were found in these 76 cases. Abstract Duchenne and Becker’s muscular dystrophy is the most common form of muscle dystrophy found in children, and is caused by an absence of the protein dystrophin. Please review our privacy policy. The symptomatic female carriers had no deletions but had abnormal dystrophin distribution in the sarcolemma discontinuous immunostains.

An explanation for the phenotypic differences between patients bearing partial deletions of the DMD locus. Tanto la DMD como la DMB presentan gran heterogeneidad de mutaciones en el gen de la distrofina, localizado en el brazo corto del cromosoma X, en la banda Xp21 2, 3 Figura 1. Abstract Patients with Becker muscular dystrophy-related cardiomyopathy typically survive into their 30s, when they succumb to complications of cardiomyopathy or receive heart transplants.

Am J Hum Genet ; Muscular dystrophy is a disorder that has been reflected in literature, cinema and television. Immunostaining of skeletal and cardiac muscle surface membrane with antibody against Duchenne muscular dystrophy peptide.

Direct diagnosis of carriers of point mutations in Duchenne muscular dystrophy. Duchenne and Becker’s muscular dystrophy is the most common form of muscle dystrophy found in children, and is caused by an absence of the protein dystrophin.

Convenient multiplex PCR system for the detection of dystrophin deletions: An isolated reaction was carried out for each of the 20 exons selected 14,17,