These are normal inner and outer hair cells.
Credit: Neuron, Mizutari et al.

Sensory hair cells regenerated, hearing restored in mammal ear

January 9, 2013

Hearing loss is a significant public health problem affecting close to 50 million people in the United States alone. Sensorineural hearing loss is the most common form and is caused by the loss of sensory hair cells in the cochlea. Hair cell loss results from a variety of factors including noise exposure, aging, toxins, infections, and certain antibiotics and anti-cancer drugs. Although hearing aids and cochlear implants can ameliorate the symptoms somewhat, there are no known treatments to restore hearing, because auditory hair cells in mammals, unlike those in birds or fish, do not regenerate once lost. Auditory hair cell replacement holds great promise as a treatment that could restore hearing after loss of hair cells.

Read more: Sensory hair cells regenerated, hearing restored in mammal ear — Medical Xpress.

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