Cited by 255Neuroscience and Neuropharmacology ResearchNeural dynamics and brain functionMemory and Neural Mechanisms

Neurogliaform Neurons Form a Novel Inhibitory Network in the Hippocampal CA1 Area

Open access
Price, Christopher J., Cauli, Bruno, Kovacs, Endre R., Kulik, Akos, Lambolez, Bertrand, Shigemoto, Ryuichi, Capogna, Marco·2005·The Journal of Neuroscience

Abstract

We studied neurogliaform neurons in the stratum lacunosum moleculare of the CA1 hippocampal area. These interneurons have short stellate dendrites and an extensive axonal arbor mainly located in the stratum lacunosum moleculare. Single-cell reverse transcription-PCR showed that these neurons were GABAergic and that the majority expressed mRNA for neuropeptide Y. Most neurogliaform neurons tested were immunoreactive for alpha-actinin-2, and many stratum lacunosum moleculare interneurons coexpressed alpha-actinin-2 and neuropeptide Y. Neurogliaform neurons received monosynaptic, DNQX-sensitive excitatory input from the perforant path, and 40 Hz stimulation of this input evoked EPSCs displaying either depression or initial facilitation, followed by depression. Paired recordings performed between neurogliaform neurons showed that 85% of pairs were electrically connected and 70% were also connected via GABAergic synapses. Injection of sine waveforms into neurons during paired recordings resulted in transmission of the waveforms through the electrical synapse. Unitary IPSCs recorded from neurogliaform pairs readily fatigued, had a slow decay, and had a strong depression of the synaptic response at a 5 Hz stimulation frequency that was antagonized by the GABA(B) antagonist (2S)-3-[[(1S)-1-(3,4-dichlorophenyl)ethyl]amino-2-hydroxypropyl](phenylmethyl) phosphinic acid (CGP55845). The amplitude of the first IPSC during the 5 Hz stimulation was also increased by CGP55845, suggesting a tonic inhibition of synaptic transmission. A small unitary GABA(B)-mediated IPSC could also be detected, providing the first evidence for such a component between GABAergic interneurons. Electron microscopic localization of the GABA(B1) subunit at neurogliaform synapses revealed the protein in both presynaptic and postsynaptic membranes. Our data disclose a novel interneuronal network well suited for modulating the flow of information between the entorhinal cortex and CA1 hippocampus.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1523/jneurosci.1135-05.2005

Cites

62 of 62 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Several primary dendrites extend from the soma then branch extensively in a stellate fashion yielding a compact somatodendritic profile reminiscent of glial cells that is typically fully contained within the NGFC's local axon cloud.

    “Several primary dendrites extend from the soma then branch extensively in a stellate fashion yielding a compact somatodendritic profile reminiscent of glial cells that is typically fully contained within the NGFC’s local axon cloud (FIGURE 3D; Refs. 299, 367, 550, 578, 606, 926, 1137, 1172, 1280).”

    From Hippocampal GABAergic Inhibitory Interneurons (2017) · cites this paper as [926]

  • NGFC dendrites and axons can also cross the hippocampal fissure into the molecular layer of the dentate gyrus and penetrate into superficial s.r., indicating that CA1 NGFC recruitment and distribution of inhibition extend beyond s.l.m.

    “However, NGFC dendrites and axons can also cross the hippocampal fissure into the molecular layer of the dentate gyrus and penetrate into superficial s.r., indicating that CA1 NGFC recruitment and distribution of inhibition extend beyond s.l.m. (367, 550, 926, 927).”

    From Hippocampal GABAergic Inhibitory Interneurons (2017) · cites this paper as [926]

  • These features combined with the dense local ramification of NGFC axons are considered to underlie the ability of NGFCs to mediate volume transmission leading to slow dual component (GABAAR- and GABABR-mediated) inhibition at virtually any postsynaptic element within their dense axonal plexus.

    “These features combined with the dense local ramification of NGFC axons are considered to underlie the ability of NGFCs to mediate volume transmission leading to slow dual component (GABAAR- and GABABR-mediated) inhibition at virtually any postsynaptic element within their dense axonal plexus (550, 926, 927, 1074, 1086).”

    From Hippocampal GABAergic Inhibitory Interneurons (2017) · cites this paper as [926]

  • Molecular markers associated with NGFCs include NPY, reelin, neuronal nitric oxide synthase (nNOS), α-actinin 2, and COUP transcription factor 2 (COUPTF2).

    “Molecular markers associated with NGFCs include NPY, reelin, neuronal nitric oxide synthase (nNOS), α-actinin 2, and COUP transcription factor 2 (COUPTF2) (48, 367, 549, 796, 858, 926, 1137).”

    From Hippocampal GABAergic Inhibitory Interneurons (2017) · cites this paper as [926]

  • The cloud of GABA generated from NGFC release can also activate presynaptic GABABR to mediate homosynaptic and heterosynaptic depression of GABAergic and glutamatergic release sometimes with remarkable target cell specificity.

    “In addition, the cloud of GABA generated from NGFC release can also activate presynaptic GABABR to mediate homosynaptic and heterosynaptic depression of GABAergic and glutamatergic release (48, 858, 859, 926, 927) sometimes with remarkable target cell specificity (204).”

    From Hippocampal GABAergic Inhibitory Interneurons (2017) · cites this paper as [926]

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Price, C. J., Cauli, B., Kovacs, E. R., Kulik, A., Lambolez, B., Shigemoto, R., & Capogna, M.
Affiliations
  • University of Oxford (GB)
  • Centre National de la Recherche Scientifique (FR)
  • Japan Science and Technology Agency (JP)
Venue
The Journal of Neuroscience
Published
2005-07-20
Volume
25
Issue
29
Pages
6775-6786
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2001809841
Cited by
255
References
62
Citations by year
2026: 5 · 2025: 8 · 2024: 12 · 2023: 10 · 2022: 7 · 2021: 10 · 2020: 8 · 2019: 13 · 2018: 13 · 2017: 5 · 2016: 10 · 2015: 11 · 2014: 13 · 2013: 8 · 2012: 13
FWCI
3.98
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
  • FreiDok plus (Universitätsbibliothek Freiburg) (submittedVersion)
Funders
Medical Research Council
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
Keywords
hippocampal CA1, inhibitory interneurons, GABAergic synapses, GABAB receptors, ACTN2, neuropeptide Y, electrical synapses, perforant path, stratum lacunosum-moleculare, synaptic depression, entorhinal cortex
MeSH terms
Animals, Axons, Dendrites, Electric Stimulation, Hippocampus, Interneurons, Nerve Net, Neural Inhibition, Neuronal Plasticity, Organ Culture Techniques, Biomarkers, Polymerase Chain Reaction, Rats, Sprague-Dawley, Receptors, GABA-B, Patch-Clamp Techniques, Entorhinal Cortex, Perforant Pathway, Rats

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review