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Untangling Alzheimer's disease
Date:10/28/2013

Plaques and tangles made of proteins are believed to contribute to the debilitating progression of Alzheimer's disease. But proteins also play a positive role in important brain functions, like cell-to-cell communication and immunological response. Molecules called microRNAs regulate both good and bad protein levels in the brain, binding to messenger RNAs to prevent them from developing into proteins.

Now, Dr. Boaz Barak and a team of researchers in the lab of Prof. Uri Ashery of Tel Aviv University's Department of Neurobiology at the George S. Wise Faculty of Life Sciences and the Sagol School of Neuroscience have identified a specific set of microRNAs that detrimentally regulate protein levels in the brains of mice with Alzheimer's disease and beneficially regulate protein levels in the brains of other mice living in a stimulating environment.

"We were able to create two lists of microRNAs those that contribute to brain performance and those that detract depending on their levels in the brain," says Dr. Barak. "By targeting these molecules, we hope to move closer toward earlier detection and better treatment of Alzheimer's disease."

Prof. Daniel Michaelson of TAU's Department of Neurobiology in the George S. Wise Faculty of Life Sciences and the Sagol School of Neuroscience, Dr. Noam Shomron of TAU's Department of Cell and Developmental Biology and Sagol School of Neuroscience, Dr. Eitan Okun of Bar-Ilan University, and Dr. Mark Mattson of the National Institute on Aging collaborated on the study, published in Translational Psychiatry in September.

A double-edged sword

Alzheimer's disease is the most common form of dementia. Currently incurable, it increasingly impairs brain function over time, ultimately leading to death. The TAU researchers became interested in the disease while studying the brains of mice living in an "enriched environment" an enlarged cage with running wheels, bedding and nes
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Contact: George Hunka
ghunka@aftau.org
212-742-9070
American Friends of Tel Aviv University
Source:Eurekalert

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