Chemistry matters. Join us to get the news you need.

If you have an ACS member number, please enter it here so we can link this account to your membership. (optional)

ACS values your privacy. By submitting your information, you are gaining access to C&EN and subscribing to our weekly newsletter. We use the information you provide to make your reading experience better, and we will never sell your data to third party members.


Biological Chemistry

Astrocytes Modulate Sleep

Mouse study provides first evidence that non-neuronal cells affect behavior

by Sophie L. Rovner
February 2, 2009 | APPEARED IN VOLUME 87, ISSUE 5

In a study of sleep regulation in mice, researchers for the first time have uncovered evidence that brain cells that aren't neurons can affect behavior. Philip G. Haydon of Tufts University and colleagues focused on astrocytes, which are glial cells that nestle up to synapses, the junctions between neurons. The researchers had previously shown that astrocytes release adenosine triphosphate. ATP is hydrolyzed by enzymes to form adenosine. The adenosine then binds to A1 receptors on the neurons and dampens their activity. In their new work, the researchers studied transgenic mice that release less adenosine than normal from their astrocytes. After sleep deprivation these mice displayed less craving for sleep than normal mice, Haydon's team found. The transgenic mice also avoided the memory problems that develop in normal mice after sleep deprivation. Normal mice treated with a compound that prevents adenosine from binding to neuronal A1 receptors also avoided these memory problems (Neuron 2009, 61, 213). Astrocytes could thus offer a promising new target for the development of treatments for sleep and cognitive disorders.



This article has been sent to the following recipient:

Leave A Comment

*Required to comment