| Steinert's disease | <neurology> An inherited human neuromuscular disease classed as an autosomal dominant disease in which there is progressive muscle weakening and wasting. A triplet repeat syndromes (like fragile X syndrome), this most common adult form of muscular dystrophy is caused by expansion of the unstable trinucleotide repeat CTG in the 3' untranslated region on chromosome 19q13 (cAMP-dependent muscle protein kinase gene). Anticipation has been associated with further expansion of the repeat upon transmission to subsequent generations (the inheritance pattern is autosomal dominant), although contraction has been noted to occur as well. Especially severe neonatal cases have been born to affected mothers preferentially, suggesting a role for genomic imprinting as well. The classic physical signs include atrophy of facial muscles, cataracts, and delayed muscle relaxation. Detection of the expanded trinucleotide repeat is accomplished by PCR or Southern blot and expansion appears to correlate with decreased transcription of the protein kinase gene. Inheritance: autosomal dominant. (29 Dec 1997) |
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| Steinert, Hans | <person> German physician, *1875. See: Steinert's disease. (05 Mar 2000) |
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| Steinert's disease |
myotonic muscular dystrophy: a severe form of muscular dystrophy marked by generalized weakness and muscular wasting that affects the face and feet and hands and neck; difficult speech and difficulty with the hands that spreads to the arms and shoulders and legs and hips; the onset can be any time from birth to middle age and the progression is slow; inheritance is autosomal dominant
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| Steinert's d. |
myotonic dystrophy.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| steinert\'s | a severe form of muscular dystrophy marked by facial weakness and drooping eyelids and difficult speech and difficulty with the hands that spreads to the arms and shoulders and legs and hips |
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