The brain cells called astrocytes, and not just neurons, are sensitive to the substances called cannabinoids—the active chemicals in marijuana.

The researchers said their findings could aid in development of treatments for cannabinoid drug abuse. Also, because so-called “endocannabinoids” produced by brain cells are involved in the neural machinery of pain perception and learning and memory, the findings could help in understanding those processes, said the researchers. Marta Navarrete and Alfonso Araque published their findings in the March 27, 2008, issue of the journal Neuron, published by Cell Press. … Continue Reading »