Scientists Discover How Brains Keep Clean

http://www.wired.com/wiredscience/2012/08/brain-waste-cleaning/

by a5seo • 14 years ago

94 24 14 years ago

wired.com

jaekwon2• 14 years ago

Water channels around blood vessels... looks like the channels might be powered by heartbeats as well.

nodata• 14 years ago

Interesting. So how does this affect people who have non-beating pacemakers?

jaekwon2• 14 years ago

good question

jacques_chester4• 14 years ago

Looks like an exciting new avenue of research.

iSnow2• 14 years ago

Maybe I am completely off track, but you don't need radioactive marker molecules if you go for two-photon imaging, you need fluorescent markers.

Also, it is sad to see that even today, every publication in the neurobiology field has to mention Alzheimer's. It's about finding how the brain works, and if it is applicable to Alzheimer's, then great, but at the current state, this is a very long shot.

jacques_chester4• 14 years ago

I think the connection is made to Alzheimers because ... there might be a connection.

Like they say right there in the article, one of the waste products is amyloid. Given amyloid buildup is pretty much what we consider Alzheimers to be, I don't see why it's ridiculous to pencil in an arrow here.

I mean if some people's bathtubs were overflowing and scientists had just discovered how drains work, don't you think it would be reasonable to speculate on a connection?

thundara2• 14 years ago

It's also an extremely important medical condition to treat. If you show promise of a breakthrough in treating Alzheimer's, you can save hundreds of thousands of minds every single year. With the upcoming wave of elderly in the US, the cost of untreated Alzheimer's is predicted to skyrocket.

iSnow2• 14 years ago

>I mean if some people's bathtubs were overflowing and scientists had just discovered how drains work, don't you think it would be reasonable to speculate on a connection? True, but 1) I have worked in the field 15 years ago and we made a connection with Alzheimer's in every grant proposal because the disease was (is?) badly understood and is really scary. We never even cared about the possibility of whether our research indeed could be applied to A., but it was a great way to get funded

2) Brains lacking those channels have a lower amyloid clearing rate. Alzheimer's brains have a higher rate of amyloid. There is no reason to believe that the first leads to the second.

3) Brains are no bathtubs. Seriously.

This is interesting research on its own, no need to spice it up by the default A. reference.

somedayme• 14 years ago

I don't know about you, but my brain is totally dirty.

firefoxman12• 14 years ago

Could this be why vasodilators like vimpocetine improve mental performance? Maybe it's half about getting more nutrients to the brain and half improving the garbage collector?

itmag2• 14 years ago

Do you have personal experience with nootropics? :)

crusso• 14 years ago

Nootropics. Great word to google. Given the importance of the brain in human endeavors, it's astounding that we're still flailing around trying to figure out how it works.

If we attacked issues with the brain like we attacked problems of getting to Mars, we could be much better prepared as a society to reach further heights.

firefoxman12• 14 years ago

Yeah, I've been trying several different types for the past 6 months or so.

stretchwithme• 14 years ago

I would not be surprised if exercise accelerated the brain's waste removal.

egeozcan• 14 years ago

I've seen the title and the first idea I had was "oh well it must be the most optimized garbage collector, ever". It's not weird to think that, right?

splicer• 14 years ago

I'm going to go drink another glass of water...

nacker• 14 years ago

To me, this article boiled down to two sentences: "Cerebrospinal fluid flowed along the outside of blood vessels, carried through a network of pipe-like protein structures. The fluid picked up waste that accumulated between cells, then drained out through major veins."

Unfortunately, it didn't deal with intracellular waste, which is a major issue over a lifetime. The only known way of addressing that is through caloric restriction. Some links:

http://www.hyperink.com/Fasting-For-Cleansing-Autophagy-b274...

http://www.pittsburghpatrika.com/2012/06/fasting-is-good-for...

http://www.nature.com/cdd/journal/v12/n2s/fig_tab/4401728ft....

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2670399/

http://www.ncbi.nlm.nih.gov/pubmed/16874025

http://www.sciencedirect.com/science/article/pii/S0969996109...

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2670399/

Bottom line, there is NO FREE LUNCH!

thesz• 14 years ago

So does intermittent fasting: http://www.marksdailyapple.com/fasting-brain-function/#axzz2...

I mention that because I hate calorie restriction.

ericxb• 14 years ago

Consuming trehalose (a sugar) may also help.

http://metamodern.com/2010/09/15/trehalose-autophagy-and-bra...

Scientists Discover How Brains Keep Clean

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