Concomitant deficits in working memory and fear extinction are functionally dissociated from reduced anxiety in metabotropic glutamate receptor 7-deficient mice

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dc.contributor.authorCallaerts-Vegh, Zsuzsanna
dc.contributor.authorBeckers, Tom
dc.contributor.authorBall, Simon M.
dc.contributor.authorBaeyens, Frank
dc.contributor.authorCallaerts, Patrick F.
dc.contributor.authorCryan, John F.
dc.contributor.authorMolnar, Elek
dc.contributor.authorD’Hooge, Rudi
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderFonds voor Wetenschappelijk Onderzoek, Belgiumen
dc.contributor.funderKatholieke Universiteit Leuven, Belgiumen
dc.date.accessioned2013-01-26T17:56:06Z
dc.date.available2013-01-26T17:56:06Z
dc.date.issued2006-06
dc.description.abstractMetabotropic glutamate receptor 7 (mGluR7), a receptor with a distinct brain distribution and a putative role in anxiety, emotional responding, and spatial working memory, could be an interesting therapeutic target for fear and anxiety disorders. mGluR7-deficient (mGluR7 / ) mice showed essentially normal performance in tests for neuromotor and exploratory activity and passive avoidance learning but prominent anxiolytic behavior in two anxiety tests. They showed a delayed learning curve during the acquisition of the hidden-platform water maze, and three interspersed probe trials indicated that mGluR7 / mice were slower to acquire spatial information. Working memory in the water maze task and the radial arm maze was impaired in mGluR7 / mice compared with mGluR7 / . mGluR7 / mice also displayed a higher resistance to extinction of fear-elicited response suppression in a conditioned emotional response protocol. In a non-fear-based water maze protocol, mGluR7 / mice displayed similar delayed extinction. These observed behavioral changes are probably not attributable to changes inAMPAorNMDAreceptor function because expression levels of AMPAand NMDA receptors were unaltered. Extinction of conditioned fear is an active and context-dependent form of inhibitory learning and an experimental model for therapeutic fear reduction. It appears to depend on glutamatergic and higher-level brain functions similar to those involved in spatial working memory but functionally dissociated from those that mediate constitutional responses in anxiety tests.en
dc.description.sponsorshipScience Foundation Ireland (SFI-CSET); Fonds voor Wetenschappelijk Onderzoek, Belgium (Vlaanderen Grant G.0271.06) Grant G.0271.06; Katholieke Universiteit Leuven, Belgium (2004 Impulse Programme)en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationCALLAERTS-VEGH, Z., BECKERS, T., BALL, S. M., BAEYENS, F., CALLAERTS, P. F., F. CRYAN, J., MOLNAR, E. & D'HOOGE, R. 2006. Concomitant Deficits in Working Memory and Fear Extinction Are Functionally Dissociated from Reduced Anxiety in Metabotropic Glutamate Receptor 7-Deficient Mice. The Journal of Neuroscience, 26, 6573-6582. doi: 10.1523/jneurosci.1497-06.2006en
dc.identifier.doi10.1523/JNEUROSCI.1497-06.2006
dc.identifier.endpage6582en
dc.identifier.issn0270-6474
dc.identifier.issued24en
dc.identifier.journaltitleThe Journal of Neuroscienceen
dc.identifier.startpage6573en
dc.identifier.urihttps://hdl.handle.net/10468/929
dc.identifier.volume26en
dc.language.isoenen
dc.publisherSociety for Neuroscienceen
dc.relation.urihttp://www.jneurosci.org/content/26/24/6573.full.pdf
dc.rights©The Authors 2006en
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/en
dc.subjectMetabotropic glutamate receptorsen
dc.subjectFear and anxietyen
dc.subjectFear extinctionen
dc.subjectConditioned emotional responseen
dc.subjectLearning and memoryen
dc.subjectOperanten
dc.titleConcomitant deficits in working memory and fear extinction are functionally dissociated from reduced anxiety in metabotropic glutamate receptor 7-deficient miceen
dc.typeArticle (peer-reviewed)en
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