Cited by 1,586Cannabis and Cannabinoid ResearchNeuroscience and Neuropharmacology ResearchNeuropeptides and Animal Physiology

Immunohistochemical distribution of cannabinoid CB1 receptors in the rat central nervous system

Tsou, K, Brown, S, Sañudo-Peña, M.C, Mackie, K, Walker, J.M·1998·Neuroscience

Abstract

Immunohistochemical distribution of cannabinoid receptors in the adult rat brain was studied using specific purified antibodies against the amino-terminus of the CB1 receptor. Our results generally agree well with the previous studies using CB1 receptor autoradiography and messenger RNA in situ hybridization. However, because of its greater resolution, immunohistochemistry allowed identification of particular neuronal cells and fibers that possess cannabinoid receptors. CB1-like immunoreactivity was found in axons, cell bodies and dendrites, where it appeared as puncta in somata and processes. Both intensely and moderately or lightly stained neurons were observed. The intensely stained neurons were dispersed and only occur in cortical structures including hippocampal formation and olfactory bulb. Moderately or lightly stained neurons were found in caudate-putamen and amygdala. In the hippocampal formation only intensely stained neurons were observed. The cell bodies of pyramidal neurons in CA1 and CA3 fields appeared to be unstained but surrounded by a dense plexus of immunoreactive fibers. The granule cells in the dentate area were also immunonegative. Many intensely stained neurons were located at the base of the granule cell layer. CB1-like immunoreactive neurons and fibers were also found in the somatosensory, cingulate, perirhinal, entorhinal and piriform cortices, in claustrum, amygdaloid nuclei, nucleus accumbens and septum. Beaded immunoreactive fibers were detected in periaqueductal gray, nucleus tractus solitarius, spinal trigeminal tract and nucleus, dorsal horn and lamina X of the spinal cord. A triangular cap-like mass of immunoreactivity was found to surround the basal part of the Purkinje cell body in the cerebellum. Only small, lightly stained cells were found in the molecular layer in the cerebellum close to the Purkinje cell layer. The CB1 receptor is widely distributed in the forebrain and has a more restricted distribution in the hindbrain and the spinal cord. It appears to be expressed on cell bodies, dendrites and axons. According to the location and morphology, many, but not all, CB1-like immunoreactive neurons appear to be GABAergic. Therefore, cannabinoids and cannabinoid receptors may play a role in modulating GABAergic neurons.

Integrity signals

Registry

Crossref · 10.1016/s0306-4522(97)00436-3

Cites

62 of 62 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

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?

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Tsou, K., Brown, S., Sañudo-Peña, M. C., Mackie, K., & Walker, J. M.
Affiliations
  • Brown University (US)
  • University of Washington (US)
Corresponding author
Tsou, K
Venue
Neuroscience
Publisher
Elsevier BV
Published
1998
Volume
83
Issue
2
Pages
393-411
ISSN
0306-4522 (ISSN-L)
OpenAlex
W2064128689
Cited by
1,586
References
62
Citations by year
2026: 16 · 2025: 34 · 2024: 25 · 2023: 49 · 2022: 50 · 2021: 51 · 2020: 48 · 2019: 37 · 2018: 46 · 2017: 66 · 2016: 59 · 2015: 57 · 2014: 63 · 2013: 40 · 2012: 67
FWCI
36.84
Type
journal article
Language
en
Open access
closed
Locations
  • Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5r01ns033247-08, 5r01da010043-05, 1r01da010536-01a1)
  • National Institute on Drug Abuse (DA10536, DA-10043)
  • National Institute of Neurological Disorders and Stroke (NS 33247)
Topics
  • Health Sciences › Medicine › Pharmacology › Cannabis and Cannabinoid Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
Keywords
CB1 receptor, cannabinoid receptors, receptor distribution, rat brain, hippocampal formation, olfactory bulb, amygdala, caudate-putamen, GABAergic neurons, Purkinje cells, cerebellum, spinal cord, forebrain, hindbrain
MeSH terms
Animals, Brain, Cannabinoids, Central Nervous System, Fluorescent Dyes, Glutathione Transferase, Immunohistochemistry, Male, Receptors, Drug, Spinal Cord, Blotting, Western, Rats, Sprague-Dawley, Receptors, Cannabinoid, 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