Alzheimer's Transmission Pathway Discovered
smitty777 writes "Two separate studies by the Taub Institute and Harvard have discovered the pathway used by Alzheimer's Disease to spread through the brain. The studies indicate it's not a virus, but a distorted protein called Tau which moves from cell to cell. Further, the discovery 'may now offer scientists a way to move forward and develop a way to block tau's spread in Alzheimer's patients, said Karen Duff, a researcher at Columbia's Taub Institute for Research on Alzheimer's disease and co-author of one study published Wednesday in the journal PLoS One. "It's enlightening for us because it now provides a whole other area for potential therapeutic impact," said Duff. "It's possible that you can identify the disease and intervene (with potential tau-blocking drugs) before the dementia actually sets in."'"
Does this suggest that it may be hazardous to produce soylent green from Alzheimer's casualties, in the same way that consumption of tissue from animals affected by prion disorders is considered unwise?
It's always the proteins ...
Prions , Tau etc...
can we not just ban them
2112 - year of the protein
seriously though - it looks like a good start
who where what when now?
After watching my dad ravaged body (by bone cancer) and mind (by Alzheimer's), anything that may some day lead to prevention is great news.
I, for one, welcome our.. I, for one, welcome..
Xenoflesh in the human brain? Clearly the apothecaries have failed in purging this scum from our fellow men. The only solution is Exterminatus. The Emperor Protects!
Random Thoughts From A Diseased Mind (Not For Dummies)
I'm certain Sir Pterry is following this with considerable interest.
A feeling of having made the same mistake before: Deja Foobar
It was done at a University by students who probably weren't paid. It wasn't done by a pharmaceutical lab. Remember that when the drug companies try to justify charging your parents $2000 for a one month supply of Alzheimer medication.
They spend more on advertising then R&D.
I was getting very depressed with all the bad news about the government and the ignorant shit they are doing. This is some refreshing news to end the week.
Hopefully I will see a cure for this disease in my lifetime.
If carrots got you drunk, rabbits would be fucked up. - Comedian Mitch Hedberg R.I.P. 03/30/68-2/24/05
I haven't RTFA but "The studies indicate it's not a virus"??? Didn't we already know that?
...of the expression, "I may have Alzheimer's, but at least I don't have Alzheimer's," will change...
Do not look into laser with remaining eye.
Provided of course, only if you can afford it.
For justice, we must go to Don Corleone
I'm always suspicious of these 'breakthroughs' when they are introduced via mass media. Somebody thought up a possible cause always gets interpreted to mean that there must be a cure on the way and that's a sexy story to sell the papers, so... Where are the links to peer-reviewed scientific journals? This is Slashdot, a link to the NY Times isn't much more than a start.
I talked with the researchers involved with Folding@Home, and they told me that indeed, processing power is at least partly used to research Tau protein misfolding.
So, if you want to do something good for your future (since there is a good chance you'll be hit by Alzheimer's if you live long enough), I suggest contributing your CPU and graphics cards cycles to Folding@Home.
"The agriculture ministry is not in charge of Gundam" - Japanese ministry official.
So he beat House after all? Anyway, very good news. I saw my grandmother slowly fall to pieces and "it's an awful way to go" doesn't even come close to describe it.
Perl Programmer for hire
Actually, we don't. For all the scaremongering at the time, there is no real evidence tying BSE transmission through animal derived feedstuffs to vCJD.
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Below is a link for the PLoS One article...
http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0031302;jsessionid=4EA9D1FCBCCF4E5C7B1B9A5FE3266C3E
Nice that they've isolated it down to a single protein causing the problem. From what I gathered from the article the protein is supposed to provide the insulation between neural networks as you get older. Shouldn't be long then before they have it isolated down to the gene sequence that causes the protein to go rogue in the first place. Assuming that it's genetic and not some other kind of Prion.
"Looking at the brains of people who have died of the disease, Dr. Duff said, is like looking at a wrecked car and trying to figure out the accident’s cause. Faulty brakes? Broken struts?
I think this is a good analogy.
but next thing you know you're in a helicopter, shooting monkeys off the Golden Gate Bridge with a machine gun.
That seems a little unlikely given how distinct they are in progression and histology.
No kidding!!! What do you say at this point?
The link to the peer reviewed paper is in the NYT article.
Does anybody remember Alzheimer's first name?
No? That's how it starts...
the dangers posed by Kuru
"No fear. No envy. No meanness." Liam Clancy
They don't eat brains because they're zombies, they are zombies because they eat brains from Alzheimer's casualties.
Most ignorance is vincible ignorance. We don't know because we don't want to know. --Aldous Huxley
In other words, Alzhimer's is a prion disease, much like Kuru. Also, I suspect, much like Multiple Sclerosis.
The difference is that Kuru is a disease gotten by eating human flesh, and even tigers that eat it will be able to get it from humans.
Scrappie comes from sheep. Mad cow comes from cows. Even deer have their own prion disease. If I had to guess what MS comes from, I'd guess pig meat.
So what's Alzhimer's come from? I suspect it comes from sausage. More specifically, from rats. Anyhow, that's where I'd start looking.
Correct Horse Battery Staple: 72 bits of entropy. Enter "Correct H" into google. When it generates the phrase, that's
Given that Alzheimer's was diagnosed over a hundred years ago I'd doubt that anything that we've been doing recently would actually be the source of the problem. Alzheimer's has probably been around for a very long time just was identified as old people going senile. It could easily be a Prion as you're implying with comparing it to Mad Cow disease, and it could be that something we are doing is spreading it. However, it could easily be just a genetic defect that's causing the protein to be folded incorrectly, and wasn't considered an issue until the human lifespan hit a point that the defect kicks in. A genetic defect is at least fixable. I don't know of any real treatments for Prions other then things that sound "promising", but have yet to prove themselves.
The relationship of Tau to prions (cause of mad cow disease) is discussed here: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3015202/?tool=pubmed "Tau, prions and A: the triad of neurodegeneration."
I saw a documentary yesterday about all types of surgeries done without transfusion (open-heart, liver cancel excision, full-knee prosthetic). Even trauma situation was discussed and how it costs less and it's often safer and healthier to do things bloodlessly.
Now, I wonder if this tau protein is transmissible via transfusion and if so whether it passes the blood-brain barrier. If so, it is probably another reason to seek alternatives.
JigJag
"The hallmark of humanity is the ability to move beyond sensory inputs" - Mary Helen Immordino-Yang
Now quick, fix it, before Terry Pratchett has to kill himself.
I'm trying to teach myself to set people on fire with my mind... Is it hot in here?
Well, yes there is. The pathway from scrapie to BSE to vCJD is well-established.
It's a small world and it smells funny; I'd buy another if it wasn't for the money; Take back what I paid (SoM)
The possibility of a very welcome (and no doubt staggeringly pricey) maintenance drug. But not a cure. Never a cure. No. Not yours.
While I agree that the pharmaceutical businesses is a complete disaster area in terms of cures-per-dollar ...
The pharmaceutical industry is not about prevention or cure, they are all about perpetual treatment.
My other car is a 1984 Nark Avenger.
This particular study was done using Mice so the hypothesis of alzheimer's might be a Prion could be tested without the ethical concern of giving healthy human being alzheimers. Though the Rats of Nimh might object. It would be fairly important to narrow down the search from a rogue Prion you could ingest to a rogue protein your genes instructed to be made.
You're right about the stages, also the type of cancer. I know at the local relay for life events I'll hear 'Oh my cancer's been in remission for years' and then the next person will tell you how a family member was gone in months. I also hear a lot of stories at the chemo ward. My mother's been fighting ovarian for over 3 years, but it had recently spread to her liver. Actually her doctors told her in December to get her affairs in order as there was nothing they could do, probably last 2-3 months. Also she was on 175 mg morphine for pain management so no quality of life to speak of. Luckily Cleveland Clinic decided she was a good candidate for surgery and she's just about back on her feet. Almost entirely pain free. No hard prognosis with cancer, but her quality of life is better and the family has time.
What I learned? Regional hospitals may be alright but on anything important screw them, get in one of the top 10 hospitals as there really is a world of difference.
As an aside World Cancer Day is Feb 4th
is why I don't plan on living past my 60's.
Be seeing you...
The Tau protein has been known to be involved with Alzheimer's Disease for a long time. For a long time the accumlation of beta amyloid has been thought as the main driving mechanism of Alzheimer's Disease. The Tau-hypothesis has been around for a long time as well. I get the impression that the majority of the research on Alzheimer's Disease has been on beta-amyloid, including finding medication that is targeting this protein. And large sums of money has been invested in this research. I don't know if this finding will suddenly change the focus.of research in Alzheimer's Disease. Actually, I am afraid that it will not make much difference, and that the tau-hypothesis will be considered as an alternative for a long time.
http://www.changemakers.com/discussions/discussion-493#comment-38823
Look into vitamin D, eating more vegetables, getting enough iodine, periodic fasting, omega 3s, and so on.
Regular exercise to keep lymph circulating and mind-body coordination (Yoga, Tai Chi) can help, too.
And social and psychological aspects make a difference too (especially in supporting good nutrition, adequate exercise, time for learning, and limiting bad stress).
The seeds of cancer are usually set decades before the problem emerges. The body is always getting cancerous cells; the issue is does the immune system fight it off. And the more reserve capacity a brain has, the longer mental decay takes to become significant and life-altering.
Sorry to hear about your father, but maybe these can help you avoid the same fate.
See also, not that it applies directly, but might be suggestive:
http://www.vitamindcouncil.org/new-study-finds-that-vitamin-d-may-help-in-treatment-of-pediatric-bone-cancer/
"Vitamin D can cause cancerous bone cells to turn into normal bone cells, according to research by scientists at the University of Kansas Medical Center (KUMC). The discovery may lead to new treatments for pediatric bone cancer, the scientists say. Recent studies have shown that vitamin D may be helpful in treating cancer of the breast, prostate and colon by inhibiting the growth of malignant cells. KUMC scientists built on that foundation, using tests to show that vitamin D produces a similar response in osteosarcoma -- a type of malignant bone tumor that mainly affects children and adolescents."
A 21st century issue: the irony of technologies of abundance in the hands of those still thinking in terms of scarcity.
No, it isn't. The protein is similar and has similar infectivity characteristics, but no-one has proved that you get vCJD from eating meat from cattle that had BSE. The old story: correlation is not causation. There is still nothing to prove there was not a common cause.
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