Live data from Hacker News

Evidence of the body’s waste system in the human brain

nih.gov

41–50 of 97 posts

Re: Evidence of the body’s waste system in the human brain

#41
post #35

> the team discovered lymphatic vessels in the dura, the leathery outer coating of the brain Can someone explain why these vessels were never discovered during autopsies until now? Are they too thin, or transparent, or thought to have been something else, or the tubes become squished after death and therefore difficult to separate from other tissue, or what?

Kipnis made a mention of this in an interview closer to the actual discovery: As to how the brain’s lymphatic vessels managed to escape notice all this time, Kipnis described them as “very well hidden” and noted that they follow a major blood vessel down into the sinuses, an area difficult to image. “It’s so close to the blood vessel, you just miss it,” he said. “If you don’t know what you’re after, you just miss it.…

Then what of the Italian scientist who noted them 200 years ago? All of those dissections and attention to research in the modern age and it was actually taught in medical school that the brain had no lymphatic system? Seems a little far-fetched.

Re: Evidence of the body’s waste system in the human brain

#42
post #37
post #35

Earlier quoted context omitted.

Kipnis made a mention of this in an interview closer to the actual discovery: As to how the brain’s lymphatic vessels managed to escape notice all this time, Kipnis described them as “very well hidden” and noted that they follow a major blood vessel down into the sinuses, an area difficult to image. “It’s so close to the blood vessel, you just miss it,” he said. “If you don’t know what you’re after, you just miss it.…

considering the article also says: Lymphatic vessels are part of the body’s circulatory system. In most of the body they run alongside blood vessels. it's somewhat surprising (in hindsight I admit) that no-one thought to look for them there before.

Who says no-one thought to look? But apparently only one person on record found them before.

How about you have a peek at the research article, think away the colors from the antibody staining and see if you still consider it strange that it could go undiscovered.

The things in question are appropriately measured on a micrometer scale, fragile to match and tightly tangled up with similar things inside jelly. And needless to say they don't come with helpful colored plastic hulls or developer defined object type annotation for inspection.

Re: Evidence of the body’s waste system in the human brain

#43
post #11

Am I alone in finding it stunning that it's 2017 and we can still discover new anatomy? How can this not have been (re)discovered?

Until we can find where and how consciousness is, and how to define it in the words of science, there will always be more to explore and discover. That's because there will always be pieces of a living system that will elude us, until the final mystery is found.

Re: Evidence of the body’s waste system in the human brain

#44

> the team discovered lymphatic vessels in the dura, the leathery outer coating of the brain Can someone explain why these vessels were never discovered during autopsies until now? Are they too thin, or transparent, or thought to have been something else, or the tubes become squished after death and therefore difficult to separate from other tissue, or what?

I wonder the same thing. Not to be snarky, but is there something faulty about medics or human biologists?! Why do I have a feeling that if we deployed computer scientists at medical research we would get a better result? I can accept that at the lower level things get fiendishly complex, but surely at a macro level like this it's just a case of diligent analysis?

> Why do I have a feeling that if we deployed computer scientists at medical research we would get a better result?

Because comp sci has an arrogance problem that rivals that of doctors?

Re: Evidence of the body’s waste system in the human brain

#46

> the team discovered lymphatic vessels in the dura, the leathery outer coating of the brain Can someone explain why these vessels were never discovered during autopsies until now? Are they too thin, or transparent, or thought to have been something else, or the tubes become squished after death and therefore difficult to separate from other tissue, or what?

Is it visible within this project?

https://en.wikipedia.org/wiki/Visible_Human_Project

Re: Evidence of the body’s waste system in the human brain

#47
post #45

Earlier quoted context omitted.

Hardly the same thing.

It is... exactly what you're saying. Except it's satire, and unfortunately you seem to be serious.

Read: I can accept that at the lower level things get fiendishly complex, but surely at a macro level like this it's just a case of diligent analysis?

How are they missing features that are visible with the human eye? I find it incredible.

Also, XKCD meme is the tiredest meme around.

Re: Evidence of the body’s waste system in the human brain

#48
post #35

Earlier quoted context omitted.

Kipnis made a mention of this in an interview closer to the actual discovery: As to how the brain’s lymphatic vessels managed to escape notice all this time, Kipnis described them as “very well hidden” and noted that they follow a major blood vessel down into the sinuses, an area difficult to image. “It’s so close to the blood vessel, you just miss it,” he said. “If you don’t know what you’re after, you just miss it.…

Then what of the Italian scientist who noted them 200 years ago? All of those dissections and attention to research in the modern age and it was actually taught in medical school that the brain had no lymphatic system? Seems a little far-fetched.

Welcome to medicine

Re: Evidence of the body’s waste system in the human brain

#50
post #13
post #9

Earlier quoted context omitted.

You guys keep saying that silly myth. They don't have a BRAIN but they have nervous system. A nervous system creates waste and that waste needs to be reclaimed. What's a brain? An exotic collection of neurons... that create waste. http://neurodojo.blogspot.com/2009/05/jellyfish-nervous-syst... >Instead, jellyfish have a ring nervous system, located along the margin of the bell. There is definitely a concentration of…

It could also be that they don't sleep in the sense of humans.

This seems to have flown over your head, but humans fall into that "other animals" category
Post reply on HN