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GSE - potential amyloid beta defense?


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#1 DukeNukem

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Posted 18 June 2008 - 02:36 PM


A potential amyloid beta defense?

Grape Seed Extract May Reduce Cognitive Decline Associated With Alzheimer's Disease
The study appears in the June 18 issue of The Journal of Neuroscience. Lead study author Giulio Pasinetti, MD, PhD, of Mount Sinai School of Medicine and colleagues found that the grape seed extract prevents amyloid beta accumulation in cells, suggesting that it may block the formation of plaques. In Alzheimer's disease, amyloid beta accumulates to form toxic plaques that disrupt normal brain function.

Moderate consumption of red wine--approximately one glass for women and two glasses for men, according to the Food and Drug Administration--and its constituent grape compounds has reported health benefits, particularly for cardiovascular function. Pasinetti previously found that red wine reduced cognitive decline in mice genetically modified to develop Alzheimer's disease. In subsequent studies, Pasinetti and colleagues have attempted to isolate which of the nearly 5,000 molecules contained in red wine are important in disease prevention. "Our intent is to develop a highly tolerable, nontoxic, orally available treatment for the prevention and treatment of Alzeheimer's dementia," Pasinetti said.

"The potential of natural compounds to provide real health benefits to brain function is only now beginning to be realized by brain researchers. The lesson they may eventually learn is that sometimes you just can't improve upon Mother nature," said Gary Arendash, PhD, of The Byrd Alzheimer's Institute, an expert unaffiliated with the study.


http://www.scienceda...80617165716.htm

#2 FunkOdyssey

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Posted 18 June 2008 - 02:44 PM

Pasinetti and colleagues have attempted to isolate which of the nearly 5,000 molecules contained in red wine are important in disease prevention. "Our intent is to develop a highly tolerable, nontoxic, orally available treatment for the prevention and treatment of Alzeheimer's dementia," Pasinetti said.

"The potential of natural compounds to provide real health benefits to brain function is only now beginning to be realized by brain researchers. The lesson they may eventually learn is that sometimes you just can't improve upon Mother nature," said Gary Arendash, PhD, of The Byrd Alzheimer's Institute, an expert unaffiliated with the study.


Let them beat their heads against the wall trying to isolate a single molecule they can tweak, patent, and make a killing on -- the rest of us will be taking dirt cheap GSE and reaping the benefits.

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#3 eternaltraveler

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Posted 18 June 2008 - 03:14 PM

for those of us still relatively young (say 10-15 years before we could expect onset of alzheimers, potentially much sooner). It's probably (hopefully...) something that will be vaccinated against effectively. Several abeta vaccines exist now, and have been (are in) various stages of clinical trials. Michael gave some good reviews on this research at the mforum.

http://www.methusela...hread.php?t=313

Edited by elrond, 18 June 2008 - 03:19 PM.


#4 inawe

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Posted 18 June 2008 - 05:12 PM

Attention GLAXO:
There is this company POLYPHENOLICS that started to make noise hoping you'll make them an offer they cannot refuse. They
even enlisted Giulio Pasinetti, MD, PhD, of Mount Sinai School of Medicine and colleagues to extract some published papers from their product.
What's the product? Glad you asked. It's a grape seed extract. No, not the old extract. This one is responsible for the "French Paradox". It
goes by the name MegaNatural-AZ and it prevents Alzheimer's as well as ingrown toenails.
Read all about at
http://www.scienceda...80617165716.htm .

#5 FunkOdyssey

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Posted 18 June 2008 - 05:24 PM

ingrown toenails... the missing link in alzheimer's risk factors. :)

Edited by FunkOdyssey, 18 June 2008 - 05:24 PM.


#6 Mind

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Posted 18 June 2008 - 05:45 PM

The study appears in the June 18 issue of The Journal of Neuroscience. Lead study author Giulio Pasinetti, MD, PhD, of Mount Sinai School of Medicine and colleagues found that the grape seed extract prevents amyloid beta accumulation in cells, suggesting that it may block the formation of plaques. In Alzheimer's disease, amyloid beta accumulates to form toxic plaques that disrupt normal brain function.


"Prevents" is pretty strong terminology here.

After the five-month period, Alzheimer's mice were at an age at which they normally develop signs of disease. However, the extract exposure reduced amyloid beta accumulation and plaque formation in brains of Alzheimer's mice and also reduced cognitive decline: compared to placebo, extract-exposed Alzheimer's mice showed improved spatial memory. These data suggest that before symptoms begin, the grape seed extract may prevent or postpone plaque formation and slow cognitive deterioration associated with Alzheimer's disease.


"reduced....may postpone", some hedging. Amyloids are implicated in more age related maladies than just Alzheimer's so this is important if it actually has a significant effect on amyloid formation. Unfortunately there is not enough information from this media article to get very excited.

#7 DukeNukem

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Posted 18 June 2008 - 05:59 PM

for those of us still relatively young (say 10-15 years before we could expect onset of alzheimers, potentially much sooner). It's probably (hopefully...) something that will be vaccinated against effectively. Several abeta vaccines exist now, and have been (are in) various stages of clinical trials. Michael gave some good reviews on this research at the mforum.

http://www.methusela...hread.php?t=313


I have low hope for a vaccine for any of the amyloids. Can there also be a vaccine for AGEs? The vaccine approach for cellular garbage seems odd to me, but it might be because I don't understand the science well. If I had to place a bet, I suspect nano-machines will be our best hope for several of the SENS problems, which probably puts us further away from a workable solution.

#8 eternaltraveler

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Posted 18 June 2008 - 07:10 PM

I have low hope for a vaccine for any of the amyloids.


Abeta vaccines have already worked in some people, however the response rate was not terribly high, and the side effects were high (inflamation of the brain due to a massive immune response to the abeta). Solvable problems.

There is nothing all that intrinsically hard about abeta to break down. It is extracellular. The trick is getting it into microglia which apparently can break it down. Autopsies of a few of the responders showed that the abeta was cleared out of their brains. This also apparently halted the increase of neurofibrillary tangles . Giving more evidence for a causal link between abeta leading to neurofibrillary tangles.

Can there also be a vaccine for AGEs?


Some of them perhaps... Others are hidden well from immunlogical view and crosslink very long lived protiens. Some sort of directed evolution of new enzymes will probably be required to take care of those.

The vaccine approach for cellular garbage seems odd to me


for most cellular garbage I would agree with you. But that isn't the problem with amyloidopathies or AGEs; they are extracellular. A very reasonable solution is to use vaccines to get them into phagocytes, and if this junk still cannot be broken down then add enzymes to these phagocytes that will degrade this garbage. A lot of extracellular junk can be broken down in the lysosome as is, however it never sees the inside of a lysosome.

Edited by elrond, 18 June 2008 - 07:13 PM.


#9 DukeNukem

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Posted 19 June 2008 - 01:40 AM

Thanks for the explanations, Elrond. Good stuff.

#10 inawe

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Posted 19 June 2008 - 08:45 PM

The abstract is already at
http://www.jneurosci...8/25/6388?rss=1
Full paper is only $15. If you are a Tg2576 mice it tells you how you can "prevent or treat AD".

#11 caston

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Posted 20 June 2008 - 09:47 AM

Will some of the immune cells choke and die when consuming extra-cellular junk?

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#12 ihatesnow

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Posted 23 June 2008 - 12:13 AM

for those of us still relatively young (say 10-15 years before we could expect onset of alzheimers, potentially much sooner). It's probably (hopefully...) something that will be vaccinated against effectively. Several abeta vaccines exist now, and have been (are in) various stages of clinical trials. Michael gave some good reviews on this research at the mforum.

http://www.methusela...hread.php?t=313



http://news.yahoo.co...lzheimer_s_clue




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