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neuro13 - nishi
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09-22-2006, 06:38 PM
Which of the following muscle diseases with weakness is an autoimmune
disorder? a. Becker muscular dystrophy b. Myotonic dystrophy c. Glycogen storage disorder (acid maltase deficiency) d. Duchenne muscular dystrophy e. Myasthenia gravis
09-22-2006, 06:49 PM
E is right...
Myasthenia gravis is an autoimmune disorder in which specific antibodies to acetylcholine receptors (AchRs) reduce the number of AChRs available at neuromuscular junctions. Becker muscular dystrophy and Duchenne muscular dystrophy (called pseudohypertrophic muscular dystrophy) are X-linked hereditary myopathies, and myotonic dystrophy is an autosomal dominant hereditary myopathy, all muscular dystrophies. Glycogen storage disorder is an autosomal recessive disorder with muscle weakness because of the acid maltase deficiency and glycogen accumulation; the adult form begins in the thirties or forties. |
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