growth/size/body
• mice show a reduction in body weight beginning around P10
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muscle
• quadriceps exhibit protein aggregates, centralized nuclei, and a paucity of sarcomeric proteins
• quadriceps show a disorganized intermyofibrillary matrix, an increase in the number of oxidative fibers, core-like lesions, and rubbed out fibers by 4 weeks of age
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• mice show a decrease in the mean cross-sectional area of myofibers at P10, indicating hypotrophic myofibers and impaired postnatal muscle growth
• by 4 weeks of age, accumulation of internalized myonuclei and pathological desmin aggregation is seen in myofibers which is further exacerbated by 12 weeks of age
• mice contain clusters of myofibrils that lack myofilaments
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• older mice exhibit sarcomeric disarray
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• myofibers show Z-disc streaming and in some instances, completely degenerated Z-discs
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• older mice exhibit immensely dilated sarcoplasmic reticulum network
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• mice exhibit centronuclear myopathy
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• older mice exhibit myofibril degeneration
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• muscles weigh less than in wild-type mice at 6 weeks of age
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• mice exhibit a congenital myopathy, showing stunted postnatal skeletal muscle growth, centronuclear myopathy, central cores, myofibrillar degeneration, large Filamin-C aggregates, and dilated sarcotubular network
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behavior/neurological
• mice exhibit a decrease in muscle strength in both the forelimbs and hind limbs
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cellular
• increase in the number of mitochondria in muscle cells
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limbs/digits/tail
• quadriceps exhibit protein aggregates, centralized nuclei, and a paucity of sarcomeric proteins
• quadriceps show a disorganized intermyofibrillary matrix, an increase in the number of oxidative fibers, core-like lesions, and rubbed out fibers by 4 weeks of age
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Mouse Models of Human Disease |
DO ID | OMIM ID(s) | Ref(s) | |
centronuclear myopathy | DOID:14717 | J:247651 |