Tag Archives: medicine

Nanotube anti-radiation pill

Fallout was one of the games that inspired John Joseph Adams to edit the recent anthology ‘Wastelands’After work by Stanford University found that carbon nanotubes don’t seem to have any detrimental effect inside the bodies of mice, researchers are looking for more ways of utilising the growing technology in medicine. DARPA has awarded a grant to Rice university to study whether a carbon nanotube based pill would be a good way of treating radiation sickness. Radiation in the body deforms cells and molecules, releasing terribly damaging free radicals which then cause more damage to the body.

“More than half of those who suffer acute radiation injury die within 30 days, not from the initial radioactive particles themselves but from the devastation they cause in the immune system, the gastrointestinal tract and other parts of the body. Ideally, we’d like to develop a drug that can be administered within 12 hours of exposure and prevent deaths from what are currently fatal exposure doses of ionizing radiation,” said James Tour, Rice University’s Chao Professor of Chemistry and director of Rice’s Carbon Nanotechnology Laboratory.

The Carbon pills would absorb large quanties of the radiation within the body, as well as the free radicals, which could dramatically cut down on the post-exposure spread of damaged cells. As DailyTech mention in their article about the discovery, video game Fallout had carbon-based anti-radiation pills way back in 1997. The third Fallout game is being released this year by the makers of Oblivion, Bethesda, for your post-apocalyptic gaming pleasure.

[story and Fallout 3 teaser poster via DailyTech]

Patents revoked on AIDS drugs

Just a quick bit of good news: four patents of the key AIDS/HIV drug tenofovir disoproxil fumarate have been revoked on grounds of prior art. This is great news for developing nations where lower prices on these drugs could save thousands of lives. [Via Slashdot]

Of course, Gilead (the company whose patents have been revoked) are vowing to fight their corner; after all, life is a wonderful thing, but it must always come second to profit.

"Gentlemen, we can rebuild him…better…faster…stronger…"

Touch Bionics' i-LIMB bionic hand Scottish scientists report that they have produced an artificial arm that is “more powerful than the real thing.” (Via MedGadget.)

According to The Scotsman newspaper:

The researchers say their new arm is capable of repeatedly lifting a weight of 10kg up above head height and could do so all day, compared with the average human being who would tire within minutes. The wrists could rotate 360° and anyone using it could perform hundreds of push-ups.

This raises an ethical question: a patient with such an arm could possibly hurt themselves or someone else. As a result, the arm’s power might actually have to be scaled down.

(Kudos to David Gow, the lead developer, for pointing out in the article something Steve Austin [The Six-Million-Dollar Man of television fame] really should have had to worry about, but never did: “You have to attach it to the patient’s body and that could cause damage if the weight is too heavy. It could snap their ribs.”)

The arm was developed by Touch Bionics, and is designed to complement the the world’s first bionic hand, pictured above and announced last year. Touch Bionics calls its technology i-LIMB.

(Image: Touch Bionics.)

[tags]bionics, technology, medicine[/tags]

Regenerating Nerves

Via Technology Review:

In the latest issue of Advanced Materials, researchers Christiane Gumera and Yadong Wang from the Georgia Institute of Technology announced that they have triggered the regrowth of nerve cells using a polymer coated with chemical structures that resemble acetylcholine, a common neurotransmitter. The research, which is the first to combine a neurotransmitter and a polymer, could one day lead to treatments for neurodegenerative diseases and spinal-cord injuries.

“Lots of people have done biopolymer work,” says Christine Schmidt, a biomedical engineer at the University of Texas at Austin. “But this demonstrates that a polymer with a neurotransmitter can be used to guide growth in the nervous system.”

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