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#1 2006-10-24 9:45 pm

Nefarious
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Our scientific targets

Today's science update comes in the area of Alzheimer's  http://www.physorg.com/news80933254.html 

Scientists have identified a naturally occurring enzyme that can break down a key component of the brain plaques characteristic of Alzheimer's disease. The finding may provide researchers with new opportunities to understand what goes wrong in the brains of Alzheimer's patients and could one day help them seek new therapies.

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#2 2006-10-29 8:37 pm

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Re: Our scientific targets

Alzheimer's revelation #2  http://www.sciencedaily.com/releases/20 … 095201.htm 

Scientists at the University of Liverpool have created a new chemical compound that could be developed into a drug treatment for Alzheimer's disease.

The research team has used a family of long chain sugars called Heparan Sulphates (HS), found on nearly every cell of the body, to produce a new compound that can prevent the formation of clumps of small proteins that form in the brain. These clumps or 'plaques' disrupt the normal function of cells leading to progressive memory loss which is characteristic of Alzheimer's disease......


A spin-out company, IntelliHep Ltd, has also been founded to explore the commercial opportunities of developing engineering heparans as new drugs against Alzheimer's and other important medical conditions.

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#3 2006-11-26 7:09 pm

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Re: Our scientific targets

Folding's official peer-reviewed papers  http://folding.stanford.edu/papers.html

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#4 2006-12-13 8:44 am

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Re: Our scientific targets

Early detection of Alzheimer's is finally here, probably http://www.cbsnews.com/stories/2006/12/ … S._2252534

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#5 2007-09-11 10:30 pm

Nefarious
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Re: Our scientific targets

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#6 2007-10-14 1:39 pm

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Re: Our scientific targets

Accuracy of tests for Alzheimer's  now up to 90 %

http://www.nytimes.com/2007/10/14/healt … blood.html

Scientists reported progress today toward one of medicine’s long-sought goals: the development of a blood test that can accurately diagnose Alzheimer’s disease, and even do so years before truly debilitating memory loss.

A team of scientists, based mainly at Stanford University, developed a test that was about 90 percent accurate in distinguishing the blood of people with Alzheimer’s from the blood of those without the disease. The test was about 80 percent accurate in predicting which patients with mild memory loss would go on to develop Alzheimer’s disease two to six years later.

Outside experts called the results, published online today by Nature Medicine promising but very preliminary. They cautioned that the work must be validated by others and in much larger studies, because there have been many disappointments in the past.

I don't believe that the Stanford group above is working with the Stanford Folding group, but who knows.  shrug

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#7 2007-11-04 12:09 pm

Nefarious
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Re: Our scientific targets

http://folding.stanford.edu/English/FAQ#ntoc1 

We have been able to fold several proteins in the 5-10 microsecond time range with experimental validation of our folding kinetics. This is a fundamental advance over previous work. Scientific papers detailing our results can be found in the Results section. We are now moving to other important proteins used in structural biology studies of folding as well as proteins involved in disease. There are many peer-reviewed and published in top journals (Science, Nature, Nature Structural Biology, PNAS, JMB, etc) which have resulted from FAH. Currently, the FAH project has published more papers than all of the other major distributed computing projects combined!

I'm reading the whole FAQ now.

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#8 2007-11-23 12:02 pm

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Re: Our scientific targets

http://physicsworld.com/cws/article/news/31838   

biophysicists in the US have discovered that a protein called myoglobin can coordinate the motion of surrounding water molecules, slowing them down significantly – perhaps to allow certain interactions to occur (PNAS 104 18461). The team has also shown that the motion of these water molecules can be associated with the shape and function of the protein – information that could improve computer simulations of protein dynamics and lead to a better understanding of diseases like Alzheimer's and Parkinson's, which involve drastic protein shape changes.


.......

Over the past few years Dongping Zhong and colleagues at the Ohio State University have developed a way to study protein hydration using ultrashort pulses of laser light. Their technique involves the amino acid tryptophan, which occurs naturally in proteins. When tryptophan is excited by a laser pulse, it emits light with properties that depend on how the tryptophan is interacting with nearby water molecules.

The team prepared proteins called myoglobins (proteins that carry oxygen in muscles) with tryptophans at known locations along the protein strands. The team then fired 90 fs (9*10-14 s) pulses of ultraviolet light at the proteins. By observing the light emitted from the tryptophans, they discovered that water next to the proteins moves in two very distinct ways.

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#9 2007-12-06 7:39 pm

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Re: Our scientific targets

http://www.newscientist.com/channel/hea … teria.html

"Scrambled-up" polymers can kill bacteria, and may offer hope in beating problems of antibiotic drug resistance, suggests a new study.

Researchers at the University of Wisconsin, in Madison, US, had been working on making molecules that mimic the short proteins known as "host-defence peptides".

They are produced as part of the innate immune response by all kinds of organisms – from plants to humans – to kill bacteria, and work, most researchers believe, by sticking onto bacteria's membranes and opening holes in them.

To mimic these natural defences, the researchers, led by Samuel Gellman and Shannon Stahl were building polymers by stringing together certain sub-units, called beta-lactams, in a particular order.

As a control for their experiments, they also assembled scrambled polymers with the sub-units in random order.

Control killer

But to their surprise, the random polymers were better at killing bacteria, Gellman says. And compared with both the ordered polymers and the natural host-defence peptides, the random polymers killed many fewer red blood cells – a crude measure of their potential toxicity to humans.


Relatively low doses of the random polymers were able to kill drug-resistant bacteria, such as Staphylococcus aureus, which is resistant to the powerful antibiotic vancomycin.

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#10 2008-02-09 2:27 pm

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Re: Our scientific targets

http://www.sciencedaily.com/releases/20 … 080452.htm 

Researchers at the University of Warwick and the Indian Institute of Technology Kanpur have discovered that the mechanism that we rely on to transport iron safely through our blood stream can, in certain circumstances, collapse into a state which grows long worm-like "fibrils" banded by lines of iron rust. This process could provide the first insight into how iron gets deposited in the brain to cause some forms of Parkinson's & Alzheimer's and Huntington's diseases.

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#11 2008-06-22 6:43 pm

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Re: Our scientific targets

http://news.wired.com/dynamic/stories/S … 2-13-08-19

WASHINGTON (AP) -- Researchers have uncovered a new clue to the cause of Alzheimer's disease.

The brains of people with the memory-robbing form of dementia are cluttered with a plaque made up of beta-amyloid, a sticky protein. But there long has been a question whether this is a cause of the disease or a side effect. Also involved are tangles of a protein called tau; some scientists suspect this is the cause.

Now, researchers have caused Alzheimer's symptoms in rats by injecting them with one particular form of beta-amyloid. Injections with other forms of beta-amyloid did not cause illness, which may explain why some people have beta-amyloid plaque in their brains but do not show disease symptoms.

The findings by a team led by Dr. Ganesh M. Shankar and Dr. Dennis J. Selkoe of Harvard Medical School were reported in Sunday's online edition of the journal Nature Medicine.

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#12 2008-10-19 11:26 pm

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Re: Our scientific targets

http://foldingforum.org/viewtopic.php?f … 854#p58410

Folding Project leader Vijay Pande says in 6-12 months that theoretical advances in understanding Alzheimer's and Huntington's Disease from Folding will be made public.

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#13 2008-10-28 2:55 pm

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Re: Our scientific targets

http://hughhewitt.townhall.com/blog/g/8 … 326af5b8f8

CF is a strange disease inasmuch as there are 1500 genetic variations of it. That means in an American patient population of 40,000, most “Cystics” are battling essentially different diseases. With the advances in genetic understanding made over the past two decades, it has become clear that some CF patients draw a much better lot than others.

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#14 2008-11-02 11:33 am

Nefarious
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Re: Our scientific targets

http://fah-web.stanford.edu/psummary.html

The molecules that are being folded vary in size.   The small ones can be from 140 to 600 atoms.

I just noticed some really big ones at 300,000 atoms.

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#15 2008-12-21 9:58 pm

Nefarious
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Re: Our scientific targets

This story states that about 3000 cancer cells may form everyday in us, but our immune systems shut them down.

The good guys are called DNAM1.

http://mdn.mainichi.jp/mdnnews/national … 1000c.html

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