Cited by 96Memory and Neural MechanismsNeuroscience and Neuropharmacology ResearchStress Responses and Cortisol

Differential effects of predator stress and the antidepressant tianeptine on physiological plasticity in the hippocampus and basolateral amygdala

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Vouimba, Rose-Marie, Muñoz, Carmen, Diamond, David M.·2006·Stress

Abstract

Stress can profoundly affect memory and alter the functioning of the hippocampus and amygdala. Studies have also shown that the antidepressant tianeptine can block the effects of stress on hippocampal and amygdala morphology and synaptic plasticity. We examined the effects of acute predator stress and tianeptine on long-term potentiation (LTP; induced by 100 pulses in 1 s) and primed burst potentiation (PB; a low threshold form of LTP induced by only five physiologically patterned pulses) in CA1 and in the basolateral nucleus (BLA) of the amygdala in anesthetized rats. Predator stress blocked the induction of PB potentiation in CA1 and enhanced LTP in BLA. Tianeptine blocked the stress-induced suppression of PB potentiation in CA1 without affecting the stress-induced enhancement of LTP in BLA. In addition, tianeptine administered under non-stress conditions enhanced PB potentiation in the hippocampus and LTP in the amygdala. These findings support the hypothesis that acute stress impairs hippocampal functioning and enhances amygdaloid functioning. The work also provides insight into the actions of tianeptine with the finding that it enhanced electrophysiological measures of plasticity in the hippocampus and amygdala under stress, as well as non-stress, conditions.

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Crossref · 10.1080/10253890600610973

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Authors
Vouimba, R.-M., Muñoz, C., & Diamond, D. M.
Affiliations
University of South Florida (US)
Corresponding author
Diamond, David M.
Venue
Stress
Published
2006-01
Volume
9
Issue
1
Pages
29-40
ISSN
  • 1025-3890 (ISSN-L)
  • 1607-8888
OpenAlex
W1963799398
Cited by
96
References
135
Citations by year
2026: 2 · 2022: 1 · 2021: 2 · 2020: 3 · 2019: 4 · 2018: 3 · 2017: 2 · 2016: 6 · 2015: 6 · 2014: 5 · 2013: 8 · 2012: 12
FWCI
4.83
Type
journal article
Language
en
Open access
Locations
  • Stress (publishedVersion)
  • PubMed (publishedVersion)
  • Digital Commons - University of South Florida (University of South Florida) (submittedVersion)
Funders
Servier
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
Keywords
predator stress, tianeptine, hippocampus, basolateral amygdala, long-term potentiation, synaptic plasticity, acute stress, antidepressants, CA1, memory
MeSH terms
Amygdala, Animals, Antidepressive Agents, Tricyclic, Cats, Evoked Potentials, Hippocampus, Male, Neuronal Plasticity, Stress, Psychological, Thiazepines, Long-Term Potentiation, Rats

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