mGluR7 facilitates extinction of aversive memories and controls amygdala plasticity.

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Bibliographic Details
Title:	mGluR7 facilitates extinction of aversive memories and controls amygdala plasticity.
Authors:	Fendt, M, Schmid, S, Thakker, D R, Jacobson, L H, Yamamoto, R, Mitsukawa, K, Maier, R, Natt, F, Hüsken, D, Kelly, P H, McAllister, K H, Hoyer, D, van der Putten, H, Cryan, J F, Flor, P J
Source:	Molecular Psychiatry. Oct2008, Vol. 13 Issue 10, p970-979. 10p. 4 Graphs.
Subjects:	Glutamic acid, Amygdaloid body, Anxiety disorders, RNA, Aversion
Abstract:	Formation and extinction of aversive memories in the mammalian brain are insufficiently understood at the cellular and molecular levels. Using the novel metabotropic glutamate receptor 7 (mGluR7) agonist AMN082, we demonstrate that mGluR7 activation facilitates the extinction of aversive memories in two different amygdala-dependent tasks. Conversely, mGluR7 knockdown using short interfering RNA attenuated the extinction of learned aversion. mGluR7 activation also blocked the acquisition of Pavlovian fear learning and its electrophysiological correlate long-term potentiation in the amygdala. The finding that mGluR7 critically regulates extinction, in addition to acquisition of aversive memories, demonstrates that this receptor may be relevant for the manifestation and treatment of anxiety disorders.Molecular Psychiatry (2008) 13, 970–979; doi:10.1038/sj.mp.4002073; published online 21 August 2007 [ABSTRACT FROM AUTHOR]
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Database:	Psychology and Behavioral Sciences Collection

Description
Abstract:	Formation and extinction of aversive memories in the mammalian brain are insufficiently understood at the cellular and molecular levels. Using the novel metabotropic glutamate receptor 7 (mGluR7) agonist AMN082, we demonstrate that mGluR7 activation facilitates the extinction of aversive memories in two different amygdala-dependent tasks. Conversely, mGluR7 knockdown using short interfering RNA attenuated the extinction of learned aversion. mGluR7 activation also blocked the acquisition of Pavlovian fear learning and its electrophysiological correlate long-term potentiation in the amygdala. The finding that mGluR7 critically regulates extinction, in addition to acquisition of aversive memories, demonstrates that this receptor may be relevant for the manifestation and treatment of anxiety disorders.Molecular Psychiatry (2008) 13, 970–979; doi:10.1038/sj.mp.4002073; published online 21 August 2007 [ABSTRACT FROM AUTHOR]
ISSN:	13594184
DOI:	10.1038/sj.mp.4002073