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Dementia Screening May be Possible wit..  

2011-06-30 21:25:00|  分类: 我的日记 |  标签: |举报 |字号 订阅

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Art Chimes | St. Louis, Missouri
 20 January 2011


photos.comA blood test that checks for levels of the Beta-amyloid protein could predict dementia risk.


New research suggests a relatively simple blood test might make it possible to predict who is at a higher risk for developing dementia.Dementia Screening May be Possible wit.. - bosouee - 浅笑俨然的博客御泥坊官方旗舰店美白嫩肤矿物泥浆面膜300g/美白去黄去角质面膜 126.0元 Dementia Screening May be Possible wit.. - bosouee - 浅笑俨然的博客

The most common form of dementia is Alzheimer's Disease, and currently, it can only be definitively diagnosed in an autopsy, by examining the brain. Beta-amyloid is a protein that shows up the brains of Alzheimer's victims. It's also present in spinal fluid and, in very small quantities, in the blood.

In a new report, researchers used nine years of data gathered on individuals who showed no sign of dementia when they started the study. Blood samples taken at the beginning of the study were compared with dementia scores at the end of the trial.

Professor Kristine Yaffe of the University of California, San Francisco, says the less beta-amyloid in a person's blood, the higher their risk of dementia "because the idea is that it's clumping up or building in the brain. Therefore it's somehow lower when you measure it outside the brain."

Yaffe and her colleagues also found that people with low levels of beta-amyloid - what she calls an "at-risk signature" - tended to avoid dementia if they had more education or were mentally active.

There are no effective medical treatments to prevent Alzheimer's Disease. But she says this finding suggests that there might be a good reason to learn if you are at higher risk of dementia.

"You might be able to do something about it by using your brain more, exercising your brain, and really revving up the brain's plasticity to maybe withstand what might be an at-risk signature."

Yaffe's study is published in the journal of the American Medical Association, .
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