Grumpy Old Deafies

Tonight there is a programme on BBC Radio 4 - Longing For Silence - at 21:00, which looks at the issue of tinnitus.

Kate Cook goes on a deeply emotional journey to explore what hope there is for a cure for the chronic tinnitus she has suffered for a quarter of a century.

It suggests cause plus form of treatment:

Berthold Langguth, a neurologist in Germany, believes the hearing cells in the auditory cortex (the brain area perceiving sound signals) in tinnitus sufferers are overactive and is trying to normalise them.

By running an electric current through sections of wire he creates a magnetic current. When held over the head of a patient the magnetic stimulation reduces the neural activity and diminishes unwanted sound.

And also touches on drugs:

Researchers in Cambridge have discovered that lidocaine, the most commonly used anaesthetic in the world, turns down the sound in two thirds of sufferers for roughly five minutes.

Whilst the drug is dangerous and the effect transitory, the discovery is clear proof for the first time that there is a mechanism to turn tinnitus off.

The golden key is to find a drug that has the suppressive effect of lidocaine without the side effects.

At the time of writing, I don't know if the BBC is planning on providing a transcript of this programme. If anyone wants to pursue this with Radio 4, and has any luck please use the comment box.

Source:
BBCi: New hope for tinnitus sufferers

Posted by alison at 9:31 AM | Permalink | Comments (2) | TrackBacks (0)

Earlier this week BBCi carried an article Smoking link to hearing problems. A fetus whose mother smoked during pregnancy or teenagers who smoke are at risk from experiencing "auditory attention deficits".

To quote the New Scientist:

Nicotine may cause the teenage brain to develop abnormality, resulting in changes to the structure of white matter [brain] ... Teenagers who smoke or whose mothers smoked during pregnancy are more likely to suffer from auditory attention deficits ....

Prenatal and adolescent exposure to tobacco smoke were associated with changes in white matter in brain pathways that relay signals to the war.

This had picked up on earlier research by Jacobsen, et al at Yale University, carrying on from previous work that stated in terms of prenatal exposure to nicotine:

... clinical studies have linked maternal smoking during pregnancy with persistent deficits ... [in] auditory processing in offspring. (Fried et al, 1997, 2003; McCartney et al, 1994)

And similarly for teenagers:

Nicotine is also disruptive to adolescent brain development (Abreu-Villaca et al., 2003) ... Neurodevelopment continues through adolescence

Sources:
Teenage Smokers face badly wired brains; New Scientist, 5 January 2008
Prenatal and Adolescent Exposure to Tobacco Smoke Modulates the Development of White Matter Microstructure; Journal of Neuroscience, December 5, 2007 [PDF]
Gender-Specific Effects of Prenatal and Adolescent Exposure to Tobacco Smoke on Auditory and Visual Attention; Neuropsychopharmacology (2007) [PDF]
Smoking link to hearing problems; BBCi
Photo: Locator - Flickr

Posted by alison at 12:23 AM | Permalink | Comments (2) | TrackBacks (0)

The FDA has just issued another health warning about cochlear implants and meningitis, following the deaths of TWO MORE deaf kids. This shouldn't be happening!

Children with Cochlear implants are at a higher risk for developing bacterial meningitis, a potentially deadly infection, and must be fully immunized against the disease. That warning came from the Food & Drug Administration (FDA) after it learned that two children with Cochlear implants had recently died from bacterial meningitis...

[SNIP]

...In its latest health alert, the FDA said that two children – ages 9 and 11 – with Cochlear implants had died from bacterial meningitis in the past year. Neither had been fully immunized against the disease, and both had Cochlear implants with positioners.

This isn't the first time this has happened. We vlogged about other cases in February and had a 3-day demo about it back in 2002, when it happened to loads of kids:

More pics here.

How many deaths over how many years is it going to take before this kind of thing stops?! Their lives are not disposable.

jen

SEE ALSO:
Bacterial Meningitis Kills Two Children with Cochlear Implants, Prompting FDA Warning (newsinferno.com)
CI to blame for death by meningitis
Cochlear Implantation Increases Meningitis Risk

Posted by j at 11:44 AM | Permalink | Comments (32) | TrackBacks (0)

This week's Sunday Times carried an article, 'Cot death linked to babies who have suffered hearing damage'. It suggests that cells in the inner ear carry out a second function (as well as hearing), to give the brain a early warning system that oxygen levels are falling in a baby's blood.

Rubens’s research, published in the journal Early Human Development, found that a surge of blood from the placenta during normal births, which is designed to kick-start breathing, may in some cases damage the workings of the inner ear.

In particular, the sudden increase in blood pressure can damage cells in the inner ear, which detect higher sound frequencies, a loss of which can be identified by tests during early infancy.

Rubens, a paediatric anaesthetist, says some of the cells may also have a second purpose as part of an early warning system to the brain that oxygen levels are falling in the baby’s blood.

If cells are damaged, this early warning relay is turned off and so babies with weaker lungs are at greater risk from choking or suffocation from overheating or a cramped position in a cot.

The article then goes onto suggest that, "a C-section birth might reduce cot deaths", and links a long labour, with ear injuries.

Further reading:
Cot death linked to babies who have suffered hearing damage - Sunday Times
Cot Deaths - BBC website
Sudden Infant Death Syndrome (SIDS) - Wikipedia

Posted by alison at 11:17 AM | Permalink | Comments (1) | TrackBacks (0)