Gene Mutation Linked to Old Age Hearing Loss Identified
Date: 30.10.2012
University of South Florida researchers have identified a genetic biomarker for age-related hearing loss. In a nine-year study researchers were able to identify the first genetic biomarker for presbycusis. The genetic mutation carried by those who ultimately suffer from age-related hearing loss is linked to speech processing abilities in older people.
Their findings are published in the journal Hearing Research. The researchers discovered a gene that produces a key protein in the inner ear -- the cochlea -- called glutamate receptor metabotropic 7 (GRM7). The GRM7 protein is intimately involved in converting sound into the code of the nervous system, in the cochlea, which is then sent to the parts of the brain used for hearing and speech processing.
Now having identified the gene, the researchers said people can be tested and takes steps earlier in life -- such as avoiding loud noises, wearing ear protection and avoiding certain medicines known to damage hearing -- to protect their hearing.
