hearing/vestibular/ear
• at 1 month of age, hair cells are partly degenerated and by 6 months, hair cells are absent
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• supporting cells in the auditory epithelium are seen in some areas but missing in others
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• cochleae display severe and rapid degeneration of the organ of Corti; degeneration is seen as early as 1 month of age and rapidly progresses from base to apex, such that by 6 months of age the auditory epithelium is flat throughout the cochlea
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• mice show ABR threshold shifts at 12, 16, and 24 kHz, indicating substantial hearing loss
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nervous system
• at 1 month of age, hair cells are partly degenerated and by 6 months, hair cells are absent
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• spiral ganglion neuron degeneration that progresses from base to apex such that by 6 months of age, all cochlear turns show severe degeneration
• mice treated with an adenovirus expressing BDNF show preservation of the spiral ganglion neurons in the base region but does not rescue the organ of Corti degeneration
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Mouse Models of Human Disease |
DO ID | OMIM ID(s) | Ref(s) | |
autosomal recessive nonsyndromic deafness 1A | DOID:0110475 |
OMIM:220290 |
J:206835 |