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New brain protein tied to Alzheimer’s disease

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Scientists have linked a new protein to Alzheimer’s disease, different from the amyloid and tau that make up the sticky brain plaques and tangles long known to be its hallmarks.

The discovery could give a new target for developing drugs and other treatments for Alzheimer’s, the most common form of dementia. It also might help explain why many people have plaques and tangles in their brain yet show no symptoms of the disease. Autopsies on 342 brains revealed that people who had the new protein were 10 times more likely to have been mentally impaired when they died than those without it.

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