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Transfusion of brain fluid from young mice improves memory in old mice

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Re: Transfusion of brain fluid from young mice improves memory in old mice

#91

Death is the ultimate equalizer. We take solace in the fact that no matter how rich, brutal, tyrannical, comically-villainous one is, death will surely come for us all. The day old-gizzards figure out how to sip on young-people juice and live forever, we are truly screwed.

A criminal is still a criminal even after death.

Re: Transfusion of brain fluid from young mice improves memory in old mice

#92

Earlier quoted context omitted.

Pretty sure the possible world being lamented in the GP comment is not "everyone gets to live forever and stay healthy and youthful" but instead "there exist expensive, parasitic procedures which will allow some rich people to have drastically extended lifespans."

parasitic procedures You can be almost sure that once the underlying mechanism is known, the necessary stuff will be synthetised instead of being transferred from a young person to an older one. If only to guarantee stable supply, consistent quality and rule out accidental transmission of various pathogens from the donor.

As a computer i find your trust in technology amusing. The underlying mechanism of a heart, for example, is known. But they still search for pigs to take hearts for transplant.

Re: Transfusion of brain fluid from young mice improves memory in old mice

#93

Earlier quoted context omitted.

Pretty sure the possible world being lamented in the GP comment is not "everyone gets to live forever and stay healthy and youthful" but instead "there exist expensive, parasitic procedures which will allow some rich people to have drastically extended lifespans."

parasitic procedures You can be almost sure that once the underlying mechanism is known, the necessary stuff will be synthetised instead of being transferred from a young person to an older one. If only to guarantee stable supply, consistent quality and rule out accidental transmission of various pathogens from the donor.

I dunno, we understand the underlying mechanism of blood pretty well, but we’re still a long way off from being able to (economically) synthesize blood for transfusion.

Re: Transfusion of brain fluid from young mice improves memory in old mice

#94

Death is the ultimate equalizer. We take solace in the fact that no matter how rich, brutal, tyrannical, comically-villainous one is, death will surely come for us all. The day old-gizzards figure out how to sip on young-people juice and live forever, we are truly screwed.

[deleted]

Re: Transfusion of brain fluid from young mice improves memory in old mice

#95

Earlier quoted context omitted.

Modifying CSF turnover is not particularly novel, but I do think it is generally overlooked. CSF production cycling is greatly reduced in the elderly and and there are a lot of connections to memory diseases such as alzheimers. A few medical device startups have attacked the problem with promising results. Unfortunately, VC and national funding orgs aren't particularly interested in device based solutions because pil…

Can you share any more information about the medical device that showed efficacy against Alzheimers in the 200-patient trial?

This is one that I thought was compelling.[1] The trial ultimately failed but if you read the results the post-hoc analysis, it showed promise in mild and moderate subgroups of the ITT population. Most drugs today don't even target mild AD, but go after pre-symptomatic patients.

There was also benefit across most measures, but just not of statistical significance.

The trial had some major problems with appropriate controls, and is widely cited as a poster child for why the FDA should not require a control group to undergo invasive brain-surgery, and how this can taint the results.

It also showed a 89% reduction in amyloid Beta, the same proxy measure Biogen's aducanumab was recently approved based on.

https://n.neurology.org/content/neurology/71/3/202.full.pdf

Re: Transfusion of brain fluid from young mice improves memory in old mice

#96

Death is the ultimate equalizer. We take solace in the fact that no matter how rich, brutal, tyrannical, comically-villainous one is, death will surely come for us all. The day old-gizzards figure out how to sip on young-people juice and live forever, we are truly screwed.

Huge worry for me as well. Let me remind everyone that aging is mostly about entropy, the exact same thing that causes an engine to inevitably wear out and break down happening to you and just like an engine fixing can't ever be as simple as just applying on procedure to all engines, because a million different things can go wrong, and there are a billion different unique people each with slightly different ways to break down. We're starting to go down a road of designer medicine and it seems very possible to me that some day we'll live in a world that a billionaire willing to spend millions a year can solve their aging. Employ a team of researchers to figure out what's breaking and put it right, but that the average person never will be

Re: Transfusion of brain fluid from young mice improves memory in old mice

#97
post #94

Death is the ultimate equalizer. We take solace in the fact that no matter how rich, brutal, tyrannical, comically-villainous one is, death will surely come for us all. The day old-gizzards figure out how to sip on young-people juice and live forever, we are truly screwed.

[deleted]

[deleted]

Re: Transfusion of brain fluid from young mice improves memory in old mice

#98

Science has proved once again that we can cure MICE of just about anything. Maybe if we would let them experiment on us we get better human results.

Unless you're volunteering to let scientists poke at your brain, mice are the best option we have. https://www.yourgenome.org/facts/why-use-the-mouse-in-resear...

Funnily enough, some people volunteered to test/develop (I don't recall which) the COVID vaccine but were turned down

Re: Transfusion of brain fluid from young mice improves memory in old mice

#99
Isn't memory also improved by novelty? For instance, your memories before and after a major life event (say, a surgery) are likely going to be more vivid than your memories around an average day (say, day 4000 sitting in a cage). This makes evolutionary sense--novel events should take up more of your limited memory resources than events you've encountered thousands of times before. It also makes me wonder about the methodology behind this paper.
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