Mitochondrial defects and hearing loss
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The techniques of human molecular genetics have been rapidly applied to the study of hearing loss. These studies have implicated more than 60 loci as causes of nonsyndromic hearing loss. Mutations at more than a dozen nuclear genes have been demonstrated to cause hearing loss, and these have been covered in recent reviews. However, a perhaps unexpected feature of the molecular characterization of human hearing loss has been the occurrence of mutations in the mitochondrial DNA (mtDNA). The importance of mitochondrial function in hearing is emphasized by the recent discovery of mutations in a nuclear-encoded mitochondrial protein which results in hearing loss. This article reviews the current status of our knowledge of mtDNA mutations that have been shown to cause hearing loss, and the suggestion of potential molecular, cellular and tissue-specific pathophysiological mechanisms by which dysfunction of mitochondria may lead to a loss of hearing.
- Mitochondrial defects and hearing loss
Cellular and Molecular Life Sciences CMLS
Volume 57, Issue 13-14 , pp 1927-1937
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- Birkhäuser Verlag
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- Key words. Hearing loss; mitochondria; genetics; mitochondrial DNA; ototoxicity; aminoglycosides.
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- Author Affiliations
- A1. Molecular Medicine Unit, University of Leeds, St James's University Hospital, Beckett Street, Leeds, LS9 7TF (United Kingdom), Fax +44 113 2444475, e-mail: firstname.lastname@example.org, GB
- A2. Molecular Biosciences, University of California, Davis (California 95616,USA),