Cited by 34Neuroendocrine regulation and behaviorMemory and Neural MechanismsStress Responses and Cortisol

Glucocorticoid-mediated effects of systemic oxytocin upon memory retrieval

de Oliveira, Lucas Fürstenau, Camboim, Clarissa, Diehl, Felipe, Consiglio, Angélica Rosat, Quillfeldt, Jorge Alberto·2007·Neurobiology of Learning and Memory

Abstract

During the last decade, a considerable amount of evidence has accumulated to show that oxytocin (OT) is involved with functions other than its classical roles in reproduction-associated processes, such as social recognition, maternal behavior and neuroendocrine regulation of the stress response. It has been shown, for instance, that post-training systemic administration of oxytocin in mice produces an amnestic effect on the step-through inhibitory avoidance. Since it is still unclear how systemic levels of OT may affect CNS memory processes, our aim here was to investigate the hypothesis that systemic OT effects on memory retrieval might be mediated through an oxytocin-induced decrease in glucocorticoid release. In our first experiment, we have found an amnestic effect of i.p. pre-test 0.4 microg/kg of OT upon memory retrieval in the inhibitory avoidance task (IA); this OT dose was shown to (a) significantly decrease plasma corticosterone levels when compared to the saline group, and (b) not to cause any anxiety effects by itself in a plus-maze task. At last, an ineffective-by-itself dose of dexamethasone was able to reverse the amnestic effect of this OT dose. Our results suggest that the amnestic effect of systemically administered oxytocin upon memory retrieval in the inhibitory avoidance task was probably caused by an oxytocin-induced decrease in glucocorticoid release from the adrenal gland.

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Crossref · 10.1016/j.nlm.2006.05.006

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Authors
de Oliveira, L. F., Camboim, C., Diehl, F., Consiglio, A. R., & Quillfeldt, J. A.
Affiliations
Universidade Federal do Rio Grande do Sul (BR)
Corresponding author
Quillfeldt, Jorge Alberto
Venue
Neurobiology of Learning and Memory
Publisher
Elsevier BV
Published
2007-01
Volume
87
Issue
1
Pages
67-71
ISSN
1074-7427 (ISSN-L)
OpenAlex
W2056704848
Cited by
34
References
33
Citations by year
2025: 1 · 2024: 1 · 2022: 2 · 2021: 6 · 2020: 1 · 2019: 1 · 2017: 1 · 2016: 1 · 2015: 3 · 2014: 1 · 2013: 4 · 2012: 3
FWCI
2.16
Type
journal article
Language
en
Open access
closed
Locations
  • Neurobiology of Learning and Memory (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
Keywords
oxytocin, glucocorticoids, corticosterone, memory retrieval, passive avoidance, amnesia, dexamethasone, anxiety, systemic administration
MeSH terms
Animals, Anxiety, Avoidance Learning, Corticosterone, Dexamethasone, Drug Administration Schedule, Hormones, Male, Oxytocin, Mental Recall, Rats, Wistar, Statistics, Nonparametric, Rats

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