Cited by 79Memory and Neural MechanismsMemory Processes and InfluencesNeurogenesis and neuroplasticity mechanisms

Differential cortical c-Fos and Zif-268 expression after object and spatial memory processing in a standard or episodic-like object recognition task

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Barbosa, Flávio Freitas, Santos, José Ronaldo, Meurer, Ywlliane S. Rodrigues, Macêdo, Priscila Tavares, Ferreira, Luane M. Stamatto, Pontes, Isabella M. Oliveira, Ribeiro, Alessandra Mussi, Silva, Regina Helena·2013·Frontiers in Behavioral Neuroscience

Abstract

Episodic memory reflects the capacity to recollect what, where, and when a specific event happened in an integrative manner. Animal studies have suggested that the medial temporal lobe and the medial pre-frontal cortex are important for episodic-like memory (ELM) formation. The goal of present study was to evaluate whether there are different patterns of expression of the immediate early genes c-Fos and Zif-268 in these cortical areas after rats are exposed to object recognition (OR) tasks with different cognitive demands. Male rats were randomly assigned to five groups: home cage control, empty open field (CTR-OF), open field with one object (CTR-OF + Obj), novel OR task, and ELM task and were killed 1 h after the last behavioral procedure. Rats were able to discriminate the objects in the OR task. In the ELM task, rats showed spatial (but not temporal) discrimination of the objects. We found an increase in the c-Fos expression in the dorsal dentate gyrus (DG) and in the perirhinal cortex (PRh) in the OR and ELM groups. The OR group also presented an increase of c-Fos expression in the medial prefrontal cortex (mPFC). Additionally, the OR and ELM groups had increased expression of Zif-268 in the mPFC. Moreover, Zif-268 was increased in the dorsal CA1 and PRh only in the ELM group. In conclusion, the pattern of activation was different in tasks with different cognitive demands. Accordingly, correlation tests suggest the engagement of different neural networks in the tasks used. Specifically, perirhinal-DG co-activation was detected after the what-where memory retrieval, but not after the novel OR task. Both regions correlated with the respective behavioral outcome. These findings can be helpful in the understanding of the neural networks underlying memory tasks with different cognitive demands.

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Authors
Barbosa, F. F., Santos, J. R., Meurer, Y. S. R., Macêdo, P. T., Ferreira, L. M. S., Pontes, I. M. O., Ribeiro, A. M., & Silva, R. H.
Affiliations
  • Universidade Federal da Paraíba (BR)
  • Universidade Federal de Sergipe (BR)
  • Universidade Federal do Rio Grande do Norte (BR)
Corresponding author
Silva, Regina Helena
Venue
Frontiers in Behavioral Neuroscience
Published
2013
Volume
7
Pages
112-112
ISSN
1662-5153 (ISSN-L)
OpenAlex
W2155145921
Cited by
79
References
67
Citations by year
2026: 1 · 2025: 3 · 2024: 2 · 2023: 3 · 2022: 13 · 2021: 8 · 2020: 11 · 2019: 4 · 2018: 6 · 2017: 7 · 2016: 7 · 2015: 10 · 2014: 4
FWCI
3.84
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Frontiers in Behavioral Neuroscience (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (publishedVersion, other-oa)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
  • Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
  • Conselho Nacional de Desenvolvimento Científico e Tecnológico
  • Fundação de Apoio à Pesquisa do Rio Grande do Norte
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory Processes and Influences
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
Keywords
episodic-like memory, object recognition, c-fos, Zif268, immediate early genes, medial prefrontal cortex, perirhinal cortex, dorsal dentate gyrus, dorsal CA1, spatial memory, neural network activation, rats

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