Alzheimer's disease & dementia

How chronic stress accelerates Alzheimer's disease

Why does chronic stress lead to increased risk for dementia? The answer may lie in the elevation of stress steroids that is seen in the brain during stress, Sara K. Bengtsson suggests in the thesis she is defending at Umeå ...

Medical research

Using human brain cells to make mice smarter

Glial cells – a family of cells found in the human central nervous system and, until recently, considered mere "housekeepers" – now appear to be essential to the unique complexity of the human brain. Scientists reached ...

Medical research

Chemical reaction keeps stroke-damaged brain from repairing itself

Nitric oxide, a gaseous molecule produced in the brain, can damage neurons. When the brain produces too much nitric oxide, it contributes to the severity and progression of stroke and neurodegenerative diseases such as Alzheimer's. ...

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