Visualization by high resolution immunoelectron microscopy of the transient receptor potential vanilloid-1 at inhibitory synapses of the mouse dentate gyrus
Open accessAbstract
We have recently shown that the transient receptor potential vanilloid type 1 (TRPV1), a non-selective cation channel in the peripheral and central nervous system, is localized at postsynaptic sites of the excitatory perforant path synapses in the hippocampal dentate molecular layer (ML). In the present work, we have studied the distribution of TRPV1 at inhibitory synapses in the ML. With this aim, a preembedding immunogold method for high resolution electron microscopy was applied to mouse hippocampus. About 30% of the inhibitory synapses in the ML are TRPV1 immunopositive, which is mostly localized perisynaptically (∼60% of total immunoparticles) at postsynaptic dendritic membranes receiving symmetric synapses in the inner 1/3 of the layer. This TRPV1 pattern distribution is not observed in the ML of TRPV1 knock-out mice. These findings extend the knowledge of the subcellular localization of TRPV1 to inhibitory synapses of the dentate molecular layer where the channel, in addition to excitatory synapses, is present.
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Additional reports indicate TRPV1 expression in the bed nucleus of the stria terminalis, hippocampal dentate gyrus, and hippocampal CA1 region in postsynaptic terminals of both inhibitory and excitatory synapses.
“there are additional reports of TRPV1 expression in the bed nucleus of the stria terminalis (BNST) (Puente et al., 2011), hippocampal dentate gyrus (Canduela et al., 2015; Lee et al., 2015; Puente et al., 2015) and hippocampal CA1 region (Lee et al., 2015) in postsynaptic terminals of both inhibitory (Canduela et al., 2015; Lee et al., 2015) and excitatory synapses (Puente et al., 2011; Puente et”
From The endocannabinoid system as a target for novel anxiolytic drugs (2017) · cites this paper as Canduela et al., 2015
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Self-citation
- Authors
- Canduela, M.-J., Mendizabal-Zubiaga, J., Puente, N., Reguero, L., Elezgarai, I., Ramos-Uriarte, A., Gerrikagoitia, I., & Grandes, P.
- Affiliations
- University of the Basque Country (ES)
- Corresponding author
- Grandes, Pedro
- Venue
- PLoS ONE
- Publisher
- Public Library of Science (PLoS)
- Published
- 2015-03-16
- Volume
- 10
- Issue
- 3
- Pages
- e0119401
- ISSN
- 1932-6203 (ISSN-L)
- PMC
- PMC4361705
- OpenAlex
- W1977016175
- Cited by
- 13
- References
- 32
- Citations by year
- 2026: 2 · 2024: 1 · 2023: 1 · 2021: 2 · 2020: 1 · 2019: 1 · 2018: 1 · 2017: 3 · 2016: 1
- FWCI
- 1.09
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- PLoS ONE (publishedVersion, cc-by)
- Europe PMC (PubMed Central) (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (submittedVersion, other-oa)
- Communities in ADDI (Universidad del Pais Vasco) (submittedVersion, other-oa)
- Communities in ADDI (University of the Basque Country) (submittedVersion, cc-by)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Hispana (submittedVersion, other-oa)
- Funders
- Eusko Jaurlaritza
- Ministerio de Economía y Competitividad
- Euskal Herriko Unibertsitatea (RD12/0028/0004, UFI11/41)
- Instituto de Salud Carlos III (RD12/0028, RD12/0028/0004)
- Topics
- Life Sciences › Neuroscience › Sensory Systems › Ion Channels and Receptors
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
- Health Sciences › Medicine › Physiology › Pain Mechanisms and Treatments
- Keywords
- TRPV1, transient receptor potential vanilloid 1, inhibitory synapses, hippocampus, subcellular localization, postsynaptic localization, cation channels
- MeSH terms
- Animals, Dendrites, Female, Male, Synapses, Microscopy, Immunoelectron, Dentate Gyrus, TRPV Cation Channels, Mice, Inhibitory Postsynaptic Potentials, Gene Knockout Techniques, Cell Body
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