inner ear cells offer hope for hard of hearing

steve connor

the independent, 28 of 8 2008

the delicate hair cells of the inner ear that are crucial to 
hearing have been grown successfully in mice for the first time 
by scientists who believe that the technique may one day be used 
to restore hearing in profoundly deaf people.
many problems with hearing are due to defective auditory hair 
cells, which mammals cannot normally regenerate.
in humans, hair cells are naturally lost during a lifetime, 
causing a corresponding loss of hearing with age. so being able 
to grow them by a form of gene therapy raises the prospect of 
being able to treat deafness in a radically different way.
the scientists stimulated the growth of new hair cells in the 
inner ear of the mice by transferring a key gene into the 
cochlea--the auditory part of the inner ear--triggering the 
development of the fine, sensory cells that respond to sound 
waves of different frequencies.
the study, printed in the journal Nature, was carried out on mice 
embryos in the womb.
"this is the first step" said john brigande of the oregon health 
and science university in portland, oregon. "we need to learn if 
we can restore hearing in deaf mice by gene transfer."
hope that you will find this useful.
from your friend karen from wigan in england.


End of article.



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