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Dystrophin expression in the hair cells of the cochlea.

Dodson, HC; Piper, TA; Clarke, JD; Quinlivan, RM; Dickson, G; (1995) Dystrophin expression in the hair cells of the cochlea. J Neurocytol , 24 (8) pp. 625-632.

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Dystrophin is normally expressed in a number of tissues including muscle, brain and the outer plexiform layer of the retina. In Duchenne and Becker muscular dystrophy abnormal or deficient dystrophin expression leads to muscle degeneration and has been implicated in mental retardation and a form of night blindness. We have examined the expression of dystrophin immunoreactivity in cochlear tissues of normal guinea-pig and mouse, and whether expression is perturbed in the cochlea of the dystrophic MDX mouse. A single band of approximately 427 kDa, corresponding to a full-length isoform of dystrophin was detected in guinea-pig and normal mouse but was absent from the MDX mouse. Cochleae from guinea-pig, normal and MDX mouse also showed a second dystrophin isoform of 116 kDa molecular weight with the C-terminal specific antibody. Immunostained guinea pig cochlear half turns were examined by laser scanning confocal microscopy. Dystrophin was localized in both inner and outer hair cells with staining patterns which were qualitatively similar with both antibodies. In the outer hair cells labelling of the lateral wall was especially distinctive. The synaptic region of both hair cell types was also strongly labelled.

Type: Article
Title: Dystrophin expression in the hair cells of the cochlea.
Location: United States
Keywords: Animals, Blotting, Western, Dystrophin, Electrophoresis, Polyacrylamide Gel, Guinea Pigs, Hair Cells, Auditory, Mice, Microscopy, Confocal, Molecular Weight, Muscular Dystrophy, Animal, Synapses
URI: http://discovery.ucl.ac.uk/id/eprint/1319846
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