Enhancing cannabinoid neurotransmission augments the extinction of conditioned fear.

Author(s): Chhatwal JP, Davis M, Maguschak KA, Ressler KJ

Emory University School of Medicine, Department of Psychiatry and Behavioral Sciences, Center for Behavioral Neuroscience, Yerkes Research Center, Atlanta, GA 30329, USA

Subject: PTSD View the study


The endogenous cannabinoid (eCB) system represents a major therapeutic target for the treatment of a variety of anxiety-related disorders. A recent study has demonstrated that pharmacologic or genetic disruption of CB1-receptor-mediated neurotransmission decreases the extinction of conditioned fear in mice. Here, we examined whether CB1 blockade would similarly disrupt extinction in rats, using fear-potentiated startle as a measure of conditioned fear. We also examined whether pharmacologic enhancement of CB1 activation would lead to enhancements in extinction.

Source: Neuropsychopharmacology
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