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Titre du document / Document title

Fear memories require protein synthesis in the amygdala for reconsolidation after retrieval

Auteur(s) / Author(s)

NADER K. (1) ; SCHAFE G. E. (1) ; LE DOUX J. E. (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) W. M. Keck Foundation Laboratory of Neurobiology, Center for Neural Science, New York University, New York, New York 10003, ETATS-UNIS

Résumé / Abstract

'New' memories are initially labile and sensitive to disruption before being consolidated into stable long-term memories1-5. Much evidence indicates that this consolidation involves the synthesis of new proteins in neurons6-9. The lateral and basal nuclei of the amygdala (LBA) are believed to be a site of memory storage in fear learning10. Infusion of the protein synthesis inhibitor anisomycin into the LBA shortly after training prevents consolidation of fear memories. Here we show that consolidated fear memories, when reactivated during retrieval, return to a labile state in which infusion of anisomycin shortly after memory reactivation produces amnesia on later tests, regardless of whether reactivation was performed 1 or 14 days after conditioning. The same treatment with anisomycin, in the absence of memory reactivation, left memory intact. Consistent with a time-limited role for protein synthesis production in consolidation, delay of the infusion until six hours after memory reactivation produced no amnesia. Our data show that consolidated fear memories, when reactivated, return to a labile state that requires de novo protein synthesis for reconsolidation. These findings are not predicted by traditional theories of memory consolidation.

Revue / Journal Title

Nature    ISSN  0028-0836   CODEN NATUAS 

Source / Source

2000, vol. 406, no6797, pp. 722-726 (30 ref.)

Langue / Language

Anglais

Editeur / Publisher

Nature Publishing Group, London, ROYAUME-UNI  (1869) (Revue)

Mots-clés anglais / English Keywords

Fear

;

Memory

;

Protein synthesis

;

Amygdala

;

Consolidation

;

Long term

;

Rat

;

Animal

;

Rodentia

;

Mammalia

;

Vertebrata

;

Basal ganglion

;

Brain (vertebrata)

;

Central nervous system

;

Mots-clés français / French Keywords

Peur

;

Mémoire

;

Synthèse protéique

;

Amygdale

;

Consolidation

;

Long terme

;

Rat

;

Animal

;

Rodentia

;

Mammalia

;

Vertebrata

;

Noyau gris central

;

Encéphale

;

Système nerveux central

;

Mots-clés espagnols / Spanish Keywords

Miedo

;

Memoria

;

Síntesis proteica

;

Amígdala

;

Consolidación

;

Largo plazo

;

Rata

;

Animal

;

Rodentia

;

Mammalia

;

Vertebrata

;

Núcleo basal

;

Encéfalo

;

Sistema nervioso central

;

Localisation / Location

INIST-CNRS, Cote INIST : 142, 35400009116378.0220

Nº notice refdoc (ud4) : 1520927



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