Cited by 264Adenosine and Purinergic SignalingNeuroscience and Neuropharmacology ResearchPain Mechanisms and Treatments

Involvement of P2X7 receptors in the regulation of neurotransmitter release in the rat hippocampus

Open access
Sperlágh, Beáta, Köfalvi, Attila, Deuchars, Jim, Atkinson, Lucy, J. Milligan, Carol, Buckley, Noel J., Vizi, E. Sylvester·2002·Journal of Neurochemistry

Abstract

Although originally cloned from rat brain, the P2X7 receptor has only recently been localized in neurones, and functional responses mediated by these neuronal P2X7 receptors (P2X7 R) are largely unknown. Here we studied the effect of P2X7 R activation on the release of neurotransmitters from superfused rat hippocampal slices. ATP (1-30 mm) and other ATP analogues elicited concentration-dependent [3 H]GABA outflow, with the following rank order of potency: benzoylbenzoylATP (BzATP) > ATP > ADP. PPADS, the non-selective P2-receptor antagonist (3-30 microm), Brilliant blue G (1-100 nm) the P2X7 -selective antagonist and Zn2+ (0.1-30 microm) inhibited, whereas lack of Mg2+ potentiated the response by ATP. In situ hybridization revealed that P2X7 R mRNA is expressed in the neurones of the cell body layers in the hippocampus. P2X7 R immunoreactivity was found in excitatory synaptic terminals in CA1 and CA3 region targeting the dendrites of pyramidal cells and parvalbumin labelled structures. ATP (3-30 microm) and BzATP (0.6-6 microm) elicited concentration-dependent [14 C]glutamate efflux, and blockade of the kainate receptor-mediated transmission by CNQX (10-100 microm) and gadolinium (100 microm), decreased ATP evoked [3 H]GABA efflux. The Na+ channel blocker TTX (1 microm), low temperature (12 degrees C), and the GABA uptake blocker nipecotic acid (1 mm) prevented ATP-induced [3 H]GABA efflux. Brilliant blue G and PPADS also reduced electrical field stimulation-induced [3 H]GABA efflux. In conclusion, P2X7 Rs are localized to the excitatory terminals in the hippocampus, and their activation regulates the release of glutamate and GABA from themselves and from their target cells.

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 · 10.1046/j.1471-4159.2002.00920.x

Cites

83 of 83 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?

  • P2X7R is detected in glial and neuronal cells.

    “Despite being detected in glial and neuronal cells [49,50,51,52,53,54], the activity of the P2X7R was not always investigated and used antibodies lack specificity [49,55,56,57].”

    From P2X7 Receptor Signaling in Stress and Depression (2019) · cites this paper as [51]

  • P2X7R antagonists (BBG or PPADS) reduced GABA release elicited by both ATP and electric stimulation.

    “P2X7R antagonists (BBG or PPADS) reduced GABA release elicited by both ATP and electric stimulation [51].”

    From P2X7 Receptor Signaling in Stress and Depression (2019) · cites this paper as [51]

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
Sperlágh, B., Köfalvi, A., Deuchars, J., Atkinson, L., J. Milligan, C., Buckley, N. J., & Vizi, E. S.
Affiliations
  • HUN-REN Institute of Experimental Medicine (HU)
  • University of Leeds (GB)
Corresponding author
Sperlágh, Beáta
Venue
Journal of Neurochemistry
Publisher
Wiley
Published
2002-06-06
Volume
81
Issue
6
Pages
1196-1211
ISSN
  • 0022-3042 (ISSN-L)
  • 1471-4159
OpenAlex
W1574063361
Cited by
264
References
83
Citations by year
2026: 3 · 2025: 8 · 2024: 10 · 2023: 15 · 2022: 8 · 2021: 14 · 2020: 10 · 2019: 9 · 2018: 9 · 2017: 10 · 2016: 8 · 2015: 12 · 2014: 10 · 2013: 14 · 2012: 15
FWCI
8.85
Type
journal article
Language
en
Open access
Locations
  • Journal of Neurochemistry (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Wellcome Trust
  • Egészségügyi Tudományos Tanács
  • Volkswagen Foundation
  • Hungarian Scientific Research Fund
  • National Institutes of Health
  • Medical Research Council
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Physiology › Adenosine and Purinergic Signaling
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Health Sciences › Medicine › Physiology › Pain Mechanisms and Treatments
Keywords
P2X7 receptor, ATP, neurotransmitter release, hippocampus, GABA release, glutamate release, Brilliant Blue G, PPADS, kainate receptors, parvalbumin interneurons, pyramidal neurons, zinc, magnesium, ATP analogs
MeSH terms
Adenosine Triphosphate, Animals, gamma-Aminobutyric Acid, Hippocampus, Immunohistochemistry, Male, Nerve Endings, Neurons, Subcellular Fractions, Receptors, Purinergic P2, Neurotransmitter Agents, Excitatory Amino Acids, Rats, Receptors, Purinergic P2X7, In Vitro Techniques

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