Deans' stroke musings

Changing stroke rehab and research worldwide now.Time is Brain!Just think of all the trillions and trillions of neurons that DIE each day because there are NO effective hyperacute therapies besides tPA(only 12% effective). I have 493 posts on hyperacute therapy, enough for researchers to spend decades proving them out. These are my personal ideas and blog on stroke rehabilitation and stroke research. Do not attempt any of these without checking with your medical provider. Unless you join me in agitating, when you need these therapies they won't be there.

What this blog is for:

Shortly after getting out of the hospital and getting NO information on the process or protocols of stroke rehabilitation and recovery I started searching on the internet and found that no other survivor received useful information. This is an attempt to cover all stroke rehabilitation information that should be readily available to survivors so they can talk with informed knowledge to their medical staff. It's quite disgusting that this information is not available from every stroke association and doctors group.
My back ground story is here:http://oc1dean.blogspot.com/2010/11/my-background-story_8.html

Tuesday, November 15, 2016

Superagers with amazing memories have Alzheimer’s brain plaques

How is your doctor making sure you get to be a superager? Any protocols at all?
Sounds like confirmation of Bernadette from the nun study.
https://www.newscientist.com/article/2112820-superagers-with-amazing-memories-have-alzheimers-brain-plaques/
Having an agile mind in your 90s might sound like wishful thinking, but some people manage to retain youthful memories until their dying days. Now post mortems have revealed that these “superagers” manage to do this even when their brains have the hallmarks of Alzheimer’s diseases.
Superagers have the memory and cognition of the average person almost half their age, and manage to avoid Alzheimer’s symptoms. Aras Rezvanian at Northwestern University in Chicago, Illinois, and his colleagues have been looking at brain samples donated by such people to try to understand what their secret might be.
The group looked at eight brains, all from people who had lived into their 90s, and had memory and cognition scores of the average 50-year-old until their final days. Specifically, the team studied two brain regions – the hippocampus, which is involved in memory, and the prefrontal cortex, which is key for cognition.
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They found that the brain samples of the superagers had plaques and tangles in them to varying degrees. These are sticky clumps and twisted fibres of protein that seem to be linked to the death of neurons, and are usually found in the brains of people with Alzheimer’s disease after they die. Of the eight superager samples, two had such a high density and distribution of these proteins that they resembled the most severe cases of Alzheimer’s.

Plaque protection

When the team counted the neurons in the brain samples, they found that they had many more neurons than samples from people who had died with Alzheimer’s. This is surprising, as it is thought that plaques are toxic and lead to the loss of neurons during Alzheimer’s disease.
“The oldest old with superior memory can display the full range of Alzheimer’s pathology,” says Rezvanian, who presented his findings at the Society for Neuroscience annual meeting on Monday. “It points to some unknown factors that protect some elderly from the plaques and tangles of Alzheimer’s,” he says.
Perhaps superagers just had more neurons to begin with, says Changiz Geula, who led the study. “They may actually be losing cognition and neurons, but start at high levels,” he says.
The findings support growing evidence that plaques and tangles might not be a direct cause of Alzheimer’s, says Cheasequah Blevins at University of Texas at Austin. “A lot of money was spent on getting rid of plaques, but it didn’t help – it actually made the patients quite sick,” she says. The next step is figuring out what the protective factor might be, she says.
Read more: Superagers with amazing memories have shrink-resistant brains; Drug that stops brain plaques may show if they cause Alzheimer’s

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