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Detoxing With Magnets for Fun and Profit

Ridgelift writes "Wired has an article on a new way to remove toxins from the bloodstream. The Argonne National Laboratory have designed nanoparticles which 'identify, and then latch onto, target molecules. The nanoparticles are injected into the bloodstream, where they circulate through the body, picking up their target toxins as they go. Once they have made their rounds, all that's needed to remove the particles from the body are a magnet housed in a handheld unit and a small, dual-channel shunt inserted into an arm or leg artery.'"

3 of 287 comments (clear)

  1. Re:What about... by KiwiEngineer · · Score: 5, Informative

    I, too had similar thoughts, but in order to not appear redundant in my post I decided to find out the particle size of a typical virus.

    I found this at drgreene.com

    Viruses range in size from 20 to 250 nanometers

    The average bacterium is 1,000 nanometers long.

    If a bacterium were my size, a typical virus particle would look like a tiny mouse-robot. If an average virus were my size, a bacterium would be the size of a dinosaur over ten stories tall.

    It could be a scale thing taht means this first generation of magnetic detox devices are too large to pick up virus particles. i don't know what sort of % you would need to remove of a viral infection compared to a bacterial infection to ensure a recovery by the casualty, but suspect it would be a lot higher for a virus.

    Another problem could lie in the changing nature of viruses, making them a harder target to select for when designing your magnetised particles.

    It would be a wonderful application if it works.

    --
    Nobody expects the Spanish Inquisition!!
  2. Re:Iron by CJ+Hooknose · · Score: 5, Informative
    ornil wrote: Admittedly, I know nothing about this [...] Isn't there iron in blood as well? Would that cause problems?

    From the article: "Small crystals of magnetite are added to the particles..." . Magnetite (Fe3O4) is magnetic because the 2 Fe+3 ions arranged with the Fe+2 ion in that specific configuration make for "magnetic domains", regions in the magnetite crystals where all the unpaired electrons are spinning the same way[0]. The iron in the hemoglobin in your blood is either Fe+2 or +3, no magnetic domains can exist because the hemoglobin molecules are floating around in solution and don't line up at all--no ferromagnetism. Even if you had a crystal of pure hemoglobin, it'd be paramagnetic (very weakly magnetic, like pure oxygen) or diamagnetic (no magnetic effects at all). You can see this for yourself by trying to pick up a drop of your own blood with a really strong horseshoe magnet.

    [0] Well, not really, but the real explanation involves a lot of math and I can't remember it anyway.

    --
    Give a monkey a brain and he'll swear he's the center of the universe.
  3. Re:Introducing Chaser 2! by Lafe · · Score: 5, Informative

    Hangovers are caused by your body being dehydrated. To fix the worst of the effect, drink lots of water (preferably the night before) or, if you happen to be an EMT, stick some saline solution right into your blood.

    Not quite.

    Hangovers are caused by your body producing acetaldehyde as it metabolizes alcohol. Dehydration does play a role, but it is a supporting role.

    A good description of what happens, and good advice on what to do about it can be found here.

    Alternatively, you can pick up the RU-21 pill designed by the KGB to keep their agents from getting hangovers.