Cited by 10Cannabis and Cannabinoid ResearchMemory and Neural MechanismsNeuroscience and Neuropharmacology Research

Interaction between hippocampal serotonin and cannabinoid systems in reactivity to spatial and object novelty detection

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Nasehi, Mohammad, Rostam-Nezhad, Elnaz, Ebrahimi-Ghiri, Mohaddeseh, Zarrindast, Mohammad-Reza·2017·Behavioural Brain Research

Abstract

Functional interaction between cannabinoid and serotonin neuronal systems have been reported in different tasks related to memory assessment. The present study investigated the effect of serotonin 5-HT4 agents into the dorsal hippocampus (the CA1 region) on spatial and object novelty detection deficits induced by activation of cannabinoid CB1 receptors (CB1Rs) using arachidonylcyclopropylamide (ACPA) in a non-associative behavioral task designed to forecast the ability of rodents to encode spatial and non-spatial relationships between distinct stimuli. Post-training, intra-CA1 microinjection of 5-HT4 receptor agonist RS67333 or 5-HT4 receptor antagonist RS23597 both at the dose of 0.016μg/mouse impaired spatial memory, while cannabinoid CB1R antagonist AM251 (0.1μg/mouse) facilitated object novelty memory. Also, post-training, intraperitoneal administration of CB1R agonist ACPA (0.005-0.05mg/kg) impaired both memories. However, a subthreshold dose of RS67333 restored ACPA response on both memories. Moreover, a subthreshold dose of RS23597 potentiated ACPA (0.01mg/kg) and reversed ACPA (0.05mg/kg) responses on spatial memory, while it potentiated ACPA response at the dose of 0.005 or 0.05mg/kg on object novelty memory. Furthermore, effective dose of AM251 restored ACPA response at the higher dose. AM251 blocked response induced by combination of RS67333 or RS23597 and the higher dose of ACPA on both memories. Our results highlight that hippocampal 5-HT4 receptors differently affect cannabinoid signaling in spatial and object novelty memories. The inactivation of CB1 receptors blocks the effect of 5-HT4 agents into the CA1 region on memory deficits induced by activation of CB1Rs via ACPA.

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Crossref · 10.1016/j.bbr.2016.09.059

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Authors
Nasehi, M., Rostam-Nezhad, E., Ebrahimi-Ghiri, M., & Zarrindast, M.-R.
Affiliations
  • Islamic Azad University, Tehran (IR)
  • University of Zanjan (IR)
Corresponding author
  • Nasehi, Mohammad
  • Zarrindast, Mohammad-Reza
Venue
Behavioural Brain Research
Publisher
Elsevier BV
Published
2017-01
Volume
317
Pages
272-278
ISSN
0166-4328 (ISSN-L)
OpenAlex
W2527611595
Cited by
10
References
40
Citations by year
2026: 1 · 2025: 1 · 2024: 1 · 2021: 1 · 2020: 2 · 2019: 1 · 2018: 2 · 2017: 1
FWCI
1.08
Type
journal article
Language
en
Open access
Locations
  • Behavioural Brain Research (acceptedVersion)
  • PubMed (publishedVersion)
Funders
Iran National Science Foundation
Topics
  • Health Sciences › Medicine › Pharmacology › Cannabis and Cannabinoid Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
hippocampal serotonin, CB1 receptor, 5-HT4 receptor, spatial memory, AM251, non-associative learning, memory impairment, drug interactions
MeSH terms
Analysis of Variance, Aniline Compounds, Animals, Arachidonic Acids, Cannabinoids, Dose-Response Relationship, Drug, Hippocampus, Locomotion, Male, Piperidines, Pyrazoles, Serotonin, Signal Detection, Psychological, Serotonin Agents, Recognition, Psychology, Receptor, Cannabinoid, CB1, Mice, Spatial Learning

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