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Source: http://www.bbc.co.uk/news/health-17783160
Miniature honeycomb 'grows nerve'
A honeycomb structure could be used to help severed nerves to grow back together
A "miniature honeycomb" - or scaffold - could one day be used to encourage damaged nerves to grow and recover, according to an international group of researchers.
The scaffold can channel clusters of nerves through its honeycomb of holes, eventually healing a severed nerve.
The findings of their study on mouse nerves are published in the journal Biofabrication.
Academics hope to one day treat spinal cord injuries with the scaffold.
When nerves are severed, such as in car accidents, it can result in a loss of feeling and movement.
Repairing this damage can be a challenge - but nerves outside of the brain and spinal cord can repair themselves, if only over short distances.
Tube links
One technique to improve this repair is to use tubes. Either end of the severed nerve is placed in a tube and the two ends of the nerve should grow and join in the middle.
Researchers at the University of Sheffield and Laser Zentrum Hannover, Germany, investigated using a honeycomb structure.
Dr Frederik Claeyssens, from the department of materials science and engineering at Sheffield, told the BBC: "That is much more like the structure of the nerve itself.
"The nerve has small regions of 'cable' that go through from one end to the other end, you have a whole bunch of little cables inside a larger cable, that's what we tried to reproduce with this type of scaffold."
The honeycomb is made from photopolymerizable polylactic acid, which biodegrades once the nerve has repaired.
The researchers showed nerve cells could grow on the scaffold and are now testing it in mice to see if it can fully repair the damage.
Dr Frederik Claeyssens said: "This technology could make a huge difference to patients suffering severe nerve damage."
Scaffold technology is used in a range of "regenerative medicines". Building a scaffold and then coating it with human cells has, for example, been used to give patients new windpipes and bladders.
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WARNING FROM RAEL: For those who don't use their intelligence at its full capacity, the label "selected by RAEL" on some articles does not mean that I agree with their content or support it. "Selected by RAEL" means that I believe it is important for the people of this planet to know about what people think or do, even when what they think or do is completely stupid and against our philosophy. When I selected articles in the past about stupid Christian fundamentalists in America praying for rain, I am sure no Rael-Science reader was stupid enough to believe that I was supporting praying to change the weather. So, when I select articles which are in favor of drugs, anti-semitic, anti-Jewish, racist, revisionist, or inciting hatred against any group or religion, or any other stupid article, it does not mean that I support them. It just means that it is important for all human beings to know about them. Common sense, which is usually very good among our readers, is good enough to understand that. When, like in the recent articles on drug decriminalization, it is necessary to make it clearer, I add a comment, which in this case was very clear: I support decriminalizing all drugs, as it is stupid to throw depressed and sad people (as only depressed and sad people use drugs) in prison and ruin their life with a criminal record. That does not mean that there is any change to the Message which says clearly that we must not use any drug except for medical purposes. The same applies to the freedom of expression which must be absolute. That does not mean again of course that I agree with anti-Jews, antisemites, racists of any kind or anti-Raelians. But by knowing your enemies or the enemies of your values, you are better equipped to fight them. With love and respect of course, and with the wonderful sentence of the French philosopher Voltaire in mind: "I disapprove of what you say, but I will defend to the death your right to say it".
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"Ethics" is simply a last-gasp attempt by deist conservatives and
orthodox dogmatics to keep humanity in ignorance and obscurantism,
through the well tried fermentation of fear, the fear of science and
new technologies.
There is nothing glorious about what our ancestors call history,
it is simply a succession of mistakes, intolerances and violations.
On the contrary, let us embrace Science and the new technologies
unfettered, for it is these which will liberate mankind from the
myth of god, and free us from our age old fears, from disease,
death and the sweat of labour.
Rael
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