Cited by 48Memory and Neural MechanismsMemory Processes and InfluencesSleep and Wakefulness Research

State-dependent effect of dopamine D1/D5 receptors inactivation on memory destabilization and reconsolidation

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Rossato, Janine I., Köhler, Cristiano A., Radiske, Andressa, Lima, Ramón H., Bevilaqua, Lia R.M., Cammarota, Martín·2015·Behavioural Brain Research

Abstract

Object recognition memories (ORM) can incorporate new information upon reactivation. This update initially involves destabilization of the original memory, which is followed by restabilization of the upgraded engram through a reconsolidation process that requires gene expression and protein synthesis in the hippocampus. We found that when given in dorsal CA1 either immediately after training or 15 min before ORM reactivation in the presence of a novel object, the dopamine D1/D5 receptor antagonist SCH23390 did not affect ORM consolidation, expression or retention but impeded the amnesia caused by the post-retrieval administration of the mRNA synthesis inhibitor α-amanitin or the protein synthesis blocker anisomycin. This anti-amnesic effect was not observed when SCH23390 was given immediately after training and again 15 min before memory reactivation. Our results demonstrate that hippocampal D1/D5 receptors are not needed for formation, retrieval or post-retrieval restabilization of the ORM trace but are essential for its destabilization when reactivation occurs together with the incorporation of new information into the original memory. Importantly, they also suggest that reenactment of the animal's post-learning neurochemical milieu at the moment of memory reactivation can be a boundary condition for reconsolidation.

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Crossref · 10.1016/j.bbr.2014.09.009

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Authors
Rossato, J. I., Köhler, C. A., Radiske, A., Lima, R. H., Bevilaqua, L. R. M., & Cammarota, M.
Affiliations
Universidade Federal do Rio Grande do Norte (BR)
Venue
Behavioural Brain Research
Publisher
Elsevier BV
Published
2015-05
Volume
285
Pages
194-199
ISSN
0166-4328 (ISSN-L)
OpenAlex
W2073782538
Cited by
48
References
31
Citations by year
2026: 2 · 2025: 4 · 2024: 3 · 2023: 5 · 2022: 4 · 2021: 6 · 2020: 9 · 2019: 4 · 2018: 3 · 2017: 1 · 2016: 1 · 2015: 6
FWCI
1.49
Type
journal article
Language
en
Open access
Locations
  • Behavioural Brain Research (publishedVersion)
  • PubMed (publishedVersion)
  • Americanae (AECID Library) (submittedVersion, other-oa)
  • LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (submittedVersion, other-oa)
Funders
  • Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq, Brazil)
  • Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul (FAPERGS, Brazil)
  • Fundação de Amparo à Pesquisa do Estado do Rio Grande do Norte (FAPERN, Brazil)
  • Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES, Brazil)
  • Programa de Pós-Graduação em Gerontologia Biomédica of Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS, Brazil)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory Processes and Influences
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
Keywords
dopamine D1/D5 receptors, memory reconsolidation, memory destabilization, object recognition memory, hippocampus, dorsal CA1, SCH 23390, alpha-amanitin, anisomycin, protein synthesis, memory consolidation, memory retrieval
MeSH terms
Memory Consolidation, Animals, Anisomycin, Benzazepines, Hippocampus, Male, Neuropsychological Tests, Protein Synthesis Inhibitors, Gene Expression, Rats, Wistar, Receptors, Dopamine D1, Dopamine Antagonists, Nucleic Acid Synthesis Inhibitors, Recognition, Psychology, Receptors, Dopamine D5, Alpha-Amanitin

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