Stem cells may help in treating deafness | Science News



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Stem cells may help in treating deafness

New method produces sound-sensitive neurons

1:02pm, September 12, 2012

Human embryonic stem cells can be directed to form sound-detecting nerve cells in the inner ears of deaf gerbils.

Deafness often results from the loss of specialized nerve cells — called hair cells and spiral ganglion neurons — in the cochlea, the part of the inner ear that converts vibrations into nerve signals the brain understands as sounds. Until now, no one has been able to replace both types of nerve cells.

Researchers at the University of Sheffield in England devised a way to make human embryonic stem cells follow the same steps that sound-detecting nerves take during normal development. When transplanted int

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