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Duchenne and Becker muscular dystrophy in Chile

Duchenne and Becker muscular dystrophy in Chile

Revista Medica de Chile 120(3): 288-292

Duchenne muscular dystrophy is one of the best known forms of muscular dystrophy. The incidence in different countries varies from 130 to 390 per million male live births. Becker variety may be considered a mild form of Duchenne dystrophy, with an incidence 10 times lower. A sex linked recessive inheritance is involved in both forms, the affected gene is placed at locus X21. The incidence of both forms in Chile is similar to that reported worldwide, and has been increasing since 1950. Increased CK and LDH levels are confirmed in patients, and overall, they are also higher in female carriers. However only 26% of carriers have increased CK levels and 21% increased LDH levels, compared to normal subjects. Electromyograms show myopathic characteristics in all carrier women. The scope of a prospective clinical, genetic and epidemiologic study currently underway is discussed.

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Accession: 039877787

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PMID: 1342481

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