Cited by 65Neuropeptides and Animal PhysiologyNeuroscience and Neuropharmacology ResearchNicotinic Acetylcholine Receptors Study

Extensive overlap of mu-opioid and nicotinic sensitivity in cortical interneurons

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Ferezou, I., Hill, E. L., Cauli, B., Gibelin, N., Kaneko, T., Rossier, J., Lambolez, B.·2007·Cerebral Cortex

Abstract

We studied mu-opioid transmission in acute slices of rat neocortex using whole-cell recordings and single-cell reverse transcription-polymerase chain reaction. The mu-opioid receptor (MOR) was found in gamma-aminobutyric acidergic (GABAergic) interneurons that were either layer I cells frequently expressing neuropeptide Y or layers II-V cells expressing vasoactive intestinal peptide and enkephalin (Enk). We found that mu-opioid agonists inhibit these interneurons that are selectively excited by nicotinic agonists. The extensive overlap of mu-opioid and nicotinic responsiveness allowed mu-opioid agonists to inhibit nicotinic excitation of responsive interneurons and of their GABAergic output onto pyramidal cells. Finally, nicotinic stimulation resulted in a dynamic sequence where GABAergic transmission was first enhanced and then depressed below its baseline. This latter disinhibitory effect was prevented by a mu-opioid antagonist, indicating that excitation of nicotinic-responsive interneurons induced the release of endogenous Enk, which in turn led to MOR activation. Our results suggest that neocortical mu-opioid transmission acts as an inhibitory feedback onto nicotinic-responsive interneurons, which may change network excitability and inhibition patterns during cholinergic excitation.

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  • Published physiological results on cortical neuropeptide signaling are surprisingly rare given the breadth of neuroscientific interest in cortex.

    “published physiological results are surprisingly rare given the breadth of neuroscientific interest in cortex.”

    From Single-cell transcriptomic evidence for dense intracortical neuropeptide networks (2019) · cites this paper as Férézou et al., 2007

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Authors
Ferezou, I., Hill, E. L., Cauli, B., Gibelin, N., Kaneko, T., Rossier, J., & Lambolez, B.
Affiliations
  • Centre National de la Recherche Scientifique (FR)
  • Kyoto University (JP)
Venue
Cerebral Cortex
Published
2006-10-26
Volume
17
Issue
8
Pages
1948-1957
ISSN
  • 1047-3211 (ISSN-L)
  • 1460-2199
OpenAlex
W2080190361
Cited by
65
References
70
Citations by year
2026: 1 · 2025: 1 · 2024: 2 · 2023: 5 · 2022: 2 · 2021: 4 · 2020: 4 · 2019: 6 · 2018: 5 · 2017: 2 · 2016: 3 · 2015: 2 · 2014: 4 · 2013: 6 · 2012: 3
FWCI
0.88
Type
journal article
Language
en
Open access
Licence
cc-by-nc
Locations
  • Cerebral Cortex (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
  • HAL (submittedVersion, other-oa)
Funders
  • Ministry of Education, Culture, Sports, Science and Technology
  • Centre National de la Recherche Scientifique
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nicotinic Acetylcholine Receptors Study
Keywords
mu-opioid receptor, nicotinic acetylcholine receptors, cortical interneurons, GABAergic interneurons, neuropeptide Y, vasoactive intestinal peptide, enkephalin, disinhibition, pyramidal neurons, cholinergic stimulation, inhibitory feedback, neocortex
MeSH terms
Animals, Cerebral Cortex, Electrophysiology, Enkephalins, gamma-Aminobutyric Acid, Interneurons, Nerve Net, Synaptic Transmission, Receptors, Nicotinic, Potassium Channels, Rats, Wistar, Receptors, Opioid, mu, Patch-Clamp Techniques, Nicotinic Agonists, Neocortex, Excitatory Postsynaptic Potentials, Reverse Transcriptase Polymerase Chain Reaction, Rats

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