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Brain cell activity regulates Alzheimer’s protein
Date:2/25/2014

s where individual nerve cells communicate with each other.

Holtzman's results support this hypothesis, showing that when nerve cells "talk" to each other, tau levels go up in the fluids between those cells, suggesting that brain cells are secreting tau when they send signals.

So far, the researchers only have been able to measure single copies of tau in brain fluid, not the tau clumps. They are looking for a way to detect the clumps. If brain cells can secrete and take in clumps of tau, the scientists believe, these clumps may cause previously normal tau in the receiving cell to become corrupted, fostering the spread of a form of tau involved in disease.

"We also want to know whether brain cells are secreting tau as waste or if tau has a function to perform outside the cell," Holtzman said. "For example, there have been hints that tau may modulate how easy or difficult it is to get brain cells to communicate with each other."


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Contact: Michael C. Purdy
purdym@wustl.edu
314-286-0122
Washington University School of Medicine
Source:Eurekalert

Page: 1 2

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