Mitochondrial abnormalities in oculopharyngeal muscular dystrophy
This report describes a 56-yr-old man with a dominantly inherited disorder affecting four generations and characterized by bilateral ptosis and dysphagia. Muscle biopsy showed only minor light microscopic abnormalities but electron microscopy revealed fibres containing paracrystalline mitochondrial...
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Faculty of Medicine, University of Malaya
1996
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my.um.eprints.244872021-03-24T01:38:26Z http://eprints.um.edu.my/24487/ Mitochondrial abnormalities in oculopharyngeal muscular dystrophy Wong, K.T. Dick, D. Anderson, J.E.R. R Medicine This report describes a 56-yr-old man with a dominantly inherited disorder affecting four generations and characterized by bilateral ptosis and dysphagia. Muscle biopsy showed only minor light microscopic abnormalities but electron microscopy revealed fibres containing paracrystalline mitochondrial inclusions. Southern analysis of mitochondrial DNA obtained from muscle did not reveal mitochondrial gene deletions. An extensive search eventually identified the characteristic intranuclear filaments of oculopharyngeal muscular dystrophy (OPMD). Abnormal mitochondria are non-specific epiphenomena in OPMD but a potential source of confusion with a late-onset mitochondrial cytopathy. This case further emphasizes the necessity for a diligent search for the diagnostic intranuclear filaments when oculopharyngeal muscular dystrophy is suspected clinically. Faculty of Medicine, University of Malaya 1996-12 Article PeerReviewed Wong, K.T. and Dick, D. and Anderson, J.E.R. (1996) Mitochondrial abnormalities in oculopharyngeal muscular dystrophy. Journal of the University of Malaya Medical Centre (JUMMEC), 1 (2). p. 59. ISSN 1823-7339 https://jummec.um.edu.my/issue/view/661/Vol.1%2C%20No.2%2C%201996 |
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This report describes a 56-yr-old man with a dominantly inherited disorder affecting four generations and characterized by bilateral ptosis and dysphagia. Muscle biopsy showed only minor light microscopic abnormalities but electron microscopy revealed fibres containing paracrystalline mitochondrial inclusions. Southern analysis of mitochondrial DNA obtained from muscle did not reveal mitochondrial gene deletions. An extensive search eventually identified the characteristic intranuclear filaments of oculopharyngeal muscular dystrophy (OPMD). Abnormal mitochondria are non-specific epiphenomena in OPMD but a potential source of confusion with a late-onset mitochondrial cytopathy. This case further emphasizes the necessity for a diligent search for the diagnostic intranuclear filaments when oculopharyngeal muscular dystrophy is suspected clinically. |
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Article |
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Wong, K.T. Dick, D. Anderson, J.E.R. |
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Wong, K.T. Dick, D. Anderson, J.E.R. |
author_sort |
Wong, K.T. |
title |
Mitochondrial abnormalities in oculopharyngeal muscular dystrophy |
title_short |
Mitochondrial abnormalities in oculopharyngeal muscular dystrophy |
title_full |
Mitochondrial abnormalities in oculopharyngeal muscular dystrophy |
title_fullStr |
Mitochondrial abnormalities in oculopharyngeal muscular dystrophy |
title_full_unstemmed |
Mitochondrial abnormalities in oculopharyngeal muscular dystrophy |
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mitochondrial abnormalities in oculopharyngeal muscular dystrophy |
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Faculty of Medicine, University of Malaya |
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1996 |
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http://eprints.um.edu.my/24487/ https://jummec.um.edu.my/issue/view/661/Vol.1%2C%20No.2%2C%201996 |
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1695531084826017792 |
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13.188404 |