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Hydrogel Process Creates Transparent Brain For Research

First time accepted submitter jds91md writes "Scientists at Stanford have developed a technique to see the structural detail of actual brains with resolution down to the cellular and axonal/dendritic level. The process called CLARITY allows a 'transparent' view of the brain without having to slice or section it in any way. From the article: 'Even more important, experts say, is that unlike earlier methods for making the tissue of brains and other organs transparent, the new process, called Clarity by its inventors, preserves the biochemistry of the brain so well that researchers can test it over and over again with chemicals that highlight specific structures within a brain and provide clues to its past activity. The researchers say this process may help uncover the physical underpinnings of devastating mental disorders like schizophrenia, autism, post-traumatic stress disorder and others.'"

13 of 46 comments (clear)

  1. Research proposal by girlintraining · · Score: 4, Funny

    The researchers say this process may help uncover the physical underpinnings of devastating mental disorders like schizophrenia, autism, post-traumatic stress disorder and others.'"

    Can you find the center of the brain responsible for youtube comments and create a drug that turns that off? The internet will pay you. The internet will pay you a lot.

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    1. Re:Research proposal by girlintraining · · Score: 5, Funny

      I'd settle for finding the part of the brain implicated in politicians engaging in cronyism, accepting bribes, and the like.

      I'd settle for slashmods with a sense of humo--WAIT! I haven't even posted yet and you've put me -1! Poop heads.

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    2. Re:Research proposal by Black+Parrot · · Score: 2

      I find it particularly interesting when commenters will trot out their pet cause on completely unrelated topics.
      Take a deep breath. Calm down. Take a walk outside. You'll feel better without all this stress.

      So objecting to crooked politicians is a "pet cause"?

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  2. Clear brains is not the story by interkin3tic · · Score: 5, Interesting

    The headline is focusing on the wrong thingThere was already a process to make brains look like glass. It was really cheap and easy too: it's just urea basically.

    The real story is the second part. You can stain for proteins and see where the localize. With SCALE, the previous method, you couldn't do that easily. Probably anyway, I never tried. You had to have fluorescent proteins expressing in the tissue, which isn't possible in human tissue samples from deceased patients unless you're trying some weird shit. Alternatively, you could stain sections, but that doesn't give you as good a 3D image of the 3D structure.

    It's really interesting work. If it doesn't cost too much, I may have to try it in my lab (though I don't work on brains.)

    1. Re:Clear brains is not the story by wierd_w · · Score: 3, Interesting

      Since it achieves the transprency the same basic way (washout of the lipids in the bilayers), it should work on neary all soft tissues, not just neuronal tissue.

      So, unless you are researching diseases of adipose tissue, this should still be of real value.

    2. Re:Clear brains is not the story by Niedi · · Score: 2

      The headline is focusing on the wrong thingThere was already a process to make brains look like glass. It was really cheap and easy too: it's just urea basically.

      True, but the level of transparency wasn't that impressive with that method, it only worked up to 1-3mm of depth. BABB based protocols were a lot better in that regards.

      The real story is the second part. You can stain for proteins and see where the localize. With SCALE, the previous method, you couldn't do that easily. Probably anyway, I never tried. You had to have fluorescent proteins expressing in the tissue, which isn't possible in human tissue samples from deceased patients unless you're trying some weird shit. Alternatively, you could stain sections, but that doesn't give you as good a 3D image of the 3D structure. It's really interesting work. If it doesn't cost too much, I may have to try it in my lab (though I don't work on brains.)

      Hell yes, that's the big one here. Plus, expressed fluorescent proteins in the tissue don't get degraded as much as with BABB et al. Definitely give it a shot, you probably have all the ingredients around the lab anyway. The clearing is done with PFA, acrylamide, bis-acrylamide, VA044 and PBS. The slices should then be immersed in glycerol, so nothing special there as far as I can see it. You only need to build a custom electrophoresis chamber to stain the brain, but even that shouldn't be too hard.

  3. It is a brain dead application. by 140Mandak262Jamuna · · Score: 4, Informative

    The brain is real, but not alive. MRI works on living brains, but usually still pictures. Functional MRI gives movies of activity on living brains, but at a lower resolution. This technique carefully washes away some parts of the brain leaving the fat cells, neurons etc intact. Then they apply electric current and study the connectivity.

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    1. Re:It is a brain dead application. by acastanza · · Score: 4, Informative

      fMRI doesn't really track brain activity, it tracks blood oxygenation which is used as a reasonably good approximation of actual activity. Just a little nitpick.

    2. Re:It is a brain dead application. by lxs · · Score: 2

      MRI works fine on dead brains, which is a bit of a problem really.

  4. Intresting tech by LordZardoz · · Score: 4, Funny

    Sounds like an optimal way to clear your mind.

    END COMMUNICATION

  5. Re:Interesting... by wierd_w · · Score: 4, Informative

    Doing this to a living brain would be "horribly unethical" in just about every way.

    This technique makes the brain transparent by gelling up the cytoplasm with a synthetic molecule, then washing out all the lipids.

    Lipids are fundementally necessary for proper neural function, and are the primary duty of glial cells to produce and deposit. Mylein is predominantly comprised of lipids. Without it, you would be a quivering and drooling moron. (On a good day.)
    [Glial cells chaparone the long axons of neural whitematter, and are the cells that wrap the axon in mylein, among other duties.]

    Doing this to a living brain would cause unbelievable neural harm.

  6. Fringe S01E01 by badkarmadayaccount · · Score: 2

    Seriously, nobody here made the connection?

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  7. Re:SCIENCE!! by jkflying · · Score: 2

    It works, bitches.

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