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Immunohistological evidence for second or somatic mutations as the underlying cause of dystrophin expression by isolated fibres in Xp21 muscular dystrophy of Duchenne-type severity

Wallgren-Pettersson, Carina, Jasani, Bharat, Rosser, Lyndon G., Lazarou, Lazarus Pavlou, Nicholson, Louise V. B. and Clarke, Angus John 1993. Immunohistological evidence for second or somatic mutations as the underlying cause of dystrophin expression by isolated fibres in Xp21 muscular dystrophy of Duchenne-type severity. Journal of the Neurological Sciences 118 (1) , pp. 56-63. 10.1016/0022-510X(93)90246-U

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Abstract

Using five monoclonal antibodies against different parts of the dystrophin molecule, we have studied the dystrophin composition of 17 dystrophin-positive fibres in a muscle biopsy from a boy with Xp21 muscular dystrophy of Duchenne-type severity. The fibres showed five distinct, reproducible, immunoreactive dystrophin profiles. All the profiles included both the N-terminal and the C-terminal domains, but between these domains, different fibres were negative for different antibodies, suggesting the somatic loss of certain exons. We interpret this as the first in situ evidence of an individual having different patterns of missing exons leading to restoration of the reading frame in various ways in the original germline frame-shifting deletion of exons 35–43. It follows that various somatic mutations had taken place in different fibres.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
Subjects: R Medicine > R Medicine (General)
Uncontrolled Keywords: Duchenne muscular dystrophy; immunoreactive dystrophin; revertant fibre; somatic mutation; frame-shift deletion; immunocytochemistry.
Publisher: Elsevier
ISSN: 0022-510X
Last Modified: 04 Jun 2017 06:28
URI: http://orca-mwe.cf.ac.uk/id/eprint/60434

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