cellular
• mitochondria from gastrocnemius muscles of 1 month old mice are enlarged and irregularily shaped
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muscle
• increase in endomysial matrix at 6 months of age as compared to controls
• collagen VI tetramers from mutant fibroblasts can not assemble into long microfibrils, as a result, the amount of collagen VI microfibrils is decreased in the extracellular matrix of mutant fibroblasts
• immunostaining of coronal sections from E17 embryos exhibit an amorphous, rather than a fibrous, pattern of collagen VI
• collagen fibers in endomysial connective tissue are disorganized
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• sarcoplasmic reticula is distended in gastrocnemius muscles of 1 month old mice
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• mutants exhibit a wide distribution of muscle fiber sizes
• mice exhibit more small and large fibers at 6 months of age as compared to controls
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• myofibers with centrally located nuclei are observed in quadriceps and diaphragm muscles at 1,3, 6 and 12 months of age
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• tenocyte organization is disrupted
• extracellular domains containing collage fiber are poorly organized
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• tenocyte organization is disrupted
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• collagen fibers from tendons of 1 month old mice appear less organized and sparse as compared to controls
• some fibrils are large with cauliflower-like fibril contours and small diameter fibrils
• most abnormal fibrils are in the pericellular regions
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skeleton
• tenocyte organization is disrupted
• extracellular domains containing collage fiber are poorly organized
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• tenocyte organization is disrupted
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• collagen fibers from tendons of 1 month old mice appear less organized and sparse as compared to controls
• some fibrils are large with cauliflower-like fibril contours and small diameter fibrils
• most abnormal fibrils are in the pericellular regions
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