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Cellular localization of P2X7 receptor mRNA in the rat brain
Abstract
P2X7 receptor is a member of the P2X family of ATP-gated ion channels. The cellular localization of P2X7 receptors in the central nervous system remains controversial because immunohistochemical staining patterns are inconsistent among antibodies. Here we examined the precise distribution of P2X7 mRNAs in the rat brain using isotopic in situ hybridization. P2X7-positive glial-like small cells were sporadically scattered in almost all areas of the brain. P2X7-positive glial-like small cells were also observed in nerve fiber tracts such as the anterior commissure, corpus callosum (CC), optic tract, and internal capsule. P2X7-positive neurons were found in the anterior olfactory nucleus, cerebral cortex, piriform cortex (Pir), lateral septal nucleus (LS), hippocampal pyramidal cell layers of CA1, CA3, CA4, pontine nuclei, external cuneate nucleus, and medial vestibular nucleus. P2X7 hybridization signals were also observed in the motor neurons of the trigeminal motor nucleus, facial nucleus, hypoglossal nucleus, and the anterior horn of the spinal cord. P2X7 mRNA was expressed in the ependymal cells around the olfactory ventricle, lateral ventricles (LV), third ventricle (3V), cerebral aqueduct (Aq), fourth ventricle (4V), and central canal. The P2X7 hybridization signal was also very strong in the area postrema (AP). The double staining experiments demonstrate that neurons, oligodendrocytes, and microglia expressed P2X7 receptor mRNAs. These findings suggest that P2X7 receptors may play a variety of roles in a wide range of cell types in the brain.
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“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 [54]
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Metadata
- Authors
- Yu, Y., Ugawa, S., Ueda, T., Ishida, Y., Inoue, K., Kyaw Nyunt, A., Umemura, A., Mase, M., Yamada, K., & Shimada, S.
- Affiliations
- Nagoya City University (JP)
- ORCID
- Venue
- Brain Research
- Publisher
- Elsevier BV
- Published
- 2008-02
- Volume
- 1194
- Pages
- 45-55
- ISSN
- 0006-8993 (ISSN-L)
- OpenAlex
- W2029679771
- Cited by
- 132
- References
- 57
- Citations by year
- 2026: 3 · 2025: 5 · 2024: 8 · 2023: 8 · 2022: 6 · 2021: 4 · 2020: 8 · 2019: 7 · 2018: 4 · 2017: 8 · 2016: 9 · 2015: 10 · 2014: 3 · 2013: 7 · 2012: 11
- FWCI
- 6.27
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Brain Research (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Physiology › Adenosine and Purinergic Signaling
- Health Sciences › Medicine › Physiology (medical) › Pain Mechanisms and Treatments
- Life Sciences › Neuroscience › Sensory Systems › Ion Channels and Receptors
- Keywords
- P2X7 receptor, ATP-gated ion channels, rat brain, ependymal cells, area postrema, oligodendrocytes, microglia, motor neurons, anterior olfactory nucleus, hippocampus, cerebral aqueduct, central nervous system
- MeSH terms
- Animals, Brain, Glial Fibrillary Acidic Protein, Isotopes, Male, Neuroglia, Neurons, Phosphopyruvate Hydratase, RNA, Messenger, 2',3'-Cyclic-Nucleotide Phosphodiesterases, Rats, Wistar, In Situ Hybridization, Receptors, Purinergic P2, CD11b Antigen, Rats
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