Document Detail


The CB1 Receptor Antagonist AM251 Impairs Reconsolidation of Pavlovian Fear Memory in the Rat Basolateral Amygdala.
MedLine Citation:
PMID:  24801769     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
We have investigated the requirement for signaling at CB1 receptors in the reconsolidation of a previously consolidated auditory fear memory, by infusing the CB1 receptor antagonist AM251, or the FAAH inhibitor URB597, directly into the basolateral amygdala (BLA) in conjunction with memory reactivation. AM251 disrupted memory restabilisation, but only when administered post-reactivation. URB597 produced a small, transient enhancement of memory restabilisation when administered post-reactivation. The amnestic effect of AM251 was rescued by co-administration of the GABAA receptor antagonist bicuculline at reactivation, indicating that the disruption of reconsolidation was mediated by altered GABAergic transmission in the BLA. These data show that the endocannabinoid system in the BLA is an important modulator of fear memory reconsolidation and that its effects on memory are mediated by an interaction with the GABAergic system. Thus, targeting the endocannabinoid system may have therapeutic potential to reduce the impact of maladaptive memories in neuropsychiatric disorders such as post-traumatic stress disorder.Neuropsychopharmacology accepted article preview online, 07 May 2014; doi:10.1038/npp.2014.103.
Authors:
Patrizia Ratano; Barry J Everitt; Amy L Milton
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-5-07
Journal Detail:
Title:  Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology     Volume:  -     ISSN:  1740-634X     ISO Abbreviation:  Neuropsychopharmacology     Publication Date:  2014 May 
Date Detail:
Created Date:  2014-5-7     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8904907     Medline TA:  Neuropsychopharmacology     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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