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Revista Mexicana de Neurociencia

Academia Mexicana de Neurología, A.C.
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2010, Number 3

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Rev Mex Neuroci 2010; 11 (3)

Myoclonic epilepsy with ragged red fibers

Miranda NG, Ortega PFEE
Full text How to cite this article

Language: Spanish
References: 6
Page: 243-245
PDF size: 85.62 Kb.


Key words:

Myoclonic epilepsy, ragged red fibers, muscle biopsy, gomori trichrome, mitochondrial disease.

ABSTRACT

Introduction: Myoclonic epilepsy whit ragged red fibers (MERRF) is a multi-system disorder characterized by myoclonus, which is often the first symptom, followed by generalized epilepsy, ataxia, weakness and dementia. The onset is usually manifested in childhood, after a normal early development. The clinical diagnosis of MERRF is based on the following four features “canonical” myoclonus epilepsy, ataxia and raggedred fibers on muscle biopsy. Case report: A female patient, 23 years old who started his condition to be 19 years old previously healthy, first with generalized tonic-clonic seizures are difficult to control early, as it currently is controlled by two medications and the electrocarfollowing year courses with generalized weakness, ataxia, weight gain, dysarthria, and prostration in a wheelchair, with progressive and irreversible deterioration. Muscle biopsy was performed showing ragged red fibers through the Gomori trichrome technique. Conclusions: MERRF syndrome should be diagnosed by correlation of its heterogeneous clinical and genetic features, in order to improve the quality of life of these patients.


REFERENCES

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  3. Silvestri G, Moraes CT, Shanske S, Oh SJ, DiMauro S. A new mtDNA mutation in the tRNA(Lys) gene associated with myoclonic epilepsy and ragged-red fibers (MERRF). Am J Hum Genet. 1992;51:1213-1217.

  4. Boulet L, Karpati G, Shoubridge EA. Distribution and threshold expression of the tRNA(Lys) mutation in skeletal muscle of patients with myoclonic epilepsy and ragged-red fibers (MERRF). Am J Hum Genet. 1992; 51: 1187–200.

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Rev Mex Neuroci. 2010;11