Now Hear This: Deaf gerbils hear again after stem cell cure
2012-09-14 0:00

By James Gallagher | BBCNews

UK researchers say they have taken a huge step forward in treating deafness after stem cells were used to restore hearing in animals for the first time.

Hearing partially improved when nerves in the ear, which pass sounds into the brain, were rebuilt in gerbils - a UK study in the journal Nature reports.

Getting the same improvement in people would be a shift from being unable to hear traffic to hearing a conversation.

However, treating humans is still a distant prospect.

If you want to listen to the radio or have a chat with a friend your ear has to convert sound waves in the air into electrical signals which the brain will understand.

This happens deep inside the inner ear where vibrations move tiny hairs and this movement creates an electrical signal.

However, in about one in 10 people with profound hearing loss, nerve cells which should pick up the signal are damaged. It is like dropping the baton after the first leg of a relay race.

The aim of researchers at the University of Sheffield was to replace those baton-dropping nerve cells, called spiral ganglion neurons, with new ones.

[...]

Analysis: A hairy problem

While there is excitement at the prospect of using stem cells to restore nerves in the ear this exact technique will not help the vast, vast majority of people with hearing loss.

Most hearing problems are caused by damage to the tiny delicate hairs which convert mechanical vibrations into electricity.

This research group have also converted embryonic stem cells into the early versions of the hair cells.

However, injecting them into the ear to restore hearing will be no easy task.

The hairs cells all need to be in the exact place and pointing in exactly the right direction.

Prof Dave Moore said using stem cells to repair the hairs was "almost an impossible task" and that the far-fetched concept of growing and transplanting a replacement ear seemed more likely.


[...]


Read the full article at: bbc.co.uk






Related Articles


Latest News from our Front Page

Professor: Reason Itself Is A White Male Construct
2015-07-04 3:55
A philosophy and religion professor at Syracuse University gave an interview to The New York Times Thursday in which he critiqued the notion of pure reason as simply being a “white male Euro-Christian construction.” Prof. John Caputo was being interviewed by fellow philosophy professor George Yancy for the 13th installment of an interview series Yancy conducts with philosophers regarding racial topics. Given its emphasis on first principles ...
The Broken Window Fallacy
2015-07-04 3:48
Youtube description: This short video explains one of the most persistent economic fallacies of our day. Source: youtube.com
Jenji Kohan and the Jewish Hyper-Sexualization of Western Culture
2015-07-04 3:33
As detailed in The Culture of Critique, Freud and his followers regarded anti-Semitism was a universal pathology which had its roots in sexual repression. The theoretical basis for this can be found in Freud’s Three Essays on the Theory of Sexuality where he linked aggression to the frustration of human drives — especially the sex drive. Kevin MacDonald notes that: ...
Confederate History - Dispelling the Myths
2015-07-03 3:28
History books, the media, the school systems, etc abound in falsehoods and inaccuracies of Confederate and Southern history. This fact sheet will help to clarify and dispell some of these rampant inaccuracies. MYTH - The War of 1861 - 1865 was fought over slavery. FACT - Terribly untrue. The North fought the war over money. Plain ...
Gays Rights May Open Door for Pedophile Rights
2015-07-03 3:31
Democrats have attempted to normalize pedophilia as a sexual orientation. A recent Supreme Court ruling on same-sex marriage may soon allow pedophiles to argue they are suffering discrimination. “Using the same tactics used by ‘gay’ rights activists, pedophiles have begun to seek similar status arguing their desire for children is a sexual orientation no different than heterosexual or homosexuals,” writes Jack Minor ...
More News »