Cited by 63Neuroscience and Neuropharmacology ResearchNeurotransmitter Receptor Influence on BehaviorMemory and Neural Mechanisms

Dopamine selectively potentiates hippocampal mossy fiber to CA3 synaptic transmission

Kobayashi, Katsunori, Suzuki, Hidenori·2007·Neuropharmacology

Abstract

Dopamine has been implicated in various brain functions and the pathology of neurological diseases. In the hippocampus, dopamine has been shown to induce acute depression of synaptic transmission in the CA1 region, but it remains largely unknown how it works in the CA3 region. We here report that dopamine induces acute synaptic potentiation at the synapse formed by mossy fibers (MFs) on mouse hippocampal CA3 pyramidal cells, but not at converging associational/commissural synapses. Dopamine potentiated both alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) and N-methyl-d-aspartate (NMDA) components of MF synaptic responses similarly in respect of the magnitude and time course. The dopamine-induced potentiation was intact in the presence of picrotoxin, required activation of D(1)-like receptors and was apparently occluded by an activator of adenylate cyclase. The potentiation was accompanied by a decrease in magnitude of synaptic facilitation, suggesting the presynaptic site for the expression of the potentiation. The present study is the first demonstration of acute potentiation of hippocampal excitatory synaptic transmission by dopamine, which is most probably mediated by presynaptic D(1)-like receptor-cAMP cascades.

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Crossref · 10.1016/j.neuropharm.2006.08.026

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Authors
Kobayashi, K., & Suzuki, H.
Affiliations
Nippon Medical School (JP)
Corresponding author
Kobayashi, Katsunori
Venue
Neuropharmacology
Publisher
Elsevier BV
Published
2007-02
Volume
52
Issue
2
Pages
552-561
ISSN
0028-3908 (ISSN-L)
OpenAlex
W2013179530
Cited by
63
References
54
Citations by year
2026: 2 · 2025: 2 · 2024: 1 · 2023: 1 · 2022: 1 · 2021: 3 · 2020: 1 · 2019: 1 · 2018: 5 · 2017: 2 · 2016: 4 · 2014: 2 · 2013: 2 · 2012: 2
FWCI
3.83
Type
journal article
Language
en
Open access
closed
Locations
  • Neuropharmacology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Human Frontier Science Program
  • Ministry of Education, Culture, Sports, Science and Technology
  • Uehara Memorial Foundation (16590208)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
Keywords
dopamine, mossy fiber synapses, hippocampal CA3, synaptic potentiation, D1-like receptors, cAMP signaling, presynaptic facilitation, AMPA receptors, NMDA receptor, excitatory synaptic transmission, picrotoxin
MeSH terms
Adenine, Animals, Dopamine, Dose-Response Relationship, Drug, Electric Stimulation, Enzyme Inhibitors, Hippocampus, Male, Synaptic Transmission, Pyramidal Cells, Patch-Clamp Techniques, Dopamine Agonists, Excitatory Amino Acid Antagonists, 6-Cyano-7-nitroquinoxaline-2,3-dione, Mossy Fibers, Hippocampal, Excitatory Postsynaptic Potentials, Mice, In Vitro Techniques

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