A Key Defender of the Aging Brain?: "A protective protein called REST is the difference-or at least a big part of it-according to a study by Yankner and colleagues that was published in Nature in late March. In cognitively normal elderly brains, the protein exists at relatively high levels in neurons, particularly in the brain regions that would be first affected by Alzheimer's. In brains with Alzheimer's dementia, by contrast, REST activity is much lower in those affected regions.
The findings hint that in many people, high levels of REST keep their brains free from Alzheimer's and other neurodegenerative diseases into their 90s and beyond."
'via Blog this'
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