Cited by 164Cannabis and Cannabinoid ResearchPain Mechanisms and TreatmentsPain Management and Placebo Effect

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Anatomical basis for cannabinoid-induced antinociception as revealed by intracerebral microinjections

Martin, William J, Coffin, Phillip O, Attias, Edna, Balinsky, Melissa, Tsou, Kang, Walker, J.Michael·1999·Brain Research

DOI 10.1016/s0006-8993(98)01368-7

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Abstract

Cannabinoids suppress behavioral and neurophysiological responses to noxious stimuli in rodents when administered systemically. The purpose of this study was to extend previous studies of the site of cannabinoid analgesia. Rats were tested in the tail flick test before and after microinjections of the cannabinoid agonist WIN55, 212-2 (5 microg) into one of 17 different brain regions. WIN55,212-2 significantly elevated tail-flick latencies when injected into the amygdala, the lateral posterior and submedius regions of the thalamus, the superior colliculus and the noradrenergic A5 region. By contrast, pain behavior was unaffected by microinjections of the cannabinoid into the other 11 areas examined (prefrontal cortex, nucleus accumbens, lateral hypothalamus, substantia nigra, cuneiform nucleus, anterior pretectal, intralaminar, parafasicular, posterior, thalamic nuclei, as well as the ventral medial, ventral lateral nuclei in the posterior thalamus).

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Authors: Martin, W. J., Coffin, P. O., Attias, E., Balinsky, M., Tsou, K., & Walker, J. M.
Affiliations: Brown University (US)
Corresponding author: Walker, J.Michael
ORCID: Martin, William J
Coffin, Phillip O
Venue: Brain Research
Publisher: Elsevier BV
Published: 1999-03
Volume: 822
Issue: 1-2
Pages: 237-242
ISSN: 0006-8993 (ISSN-L)
DOI: 10.1016/s0006-8993(98)01368-7
OpenAlex: W2009864778
Cited by: 164
References: 22
Citations by year: 2026: 1 · 2025: 1 · 2024: 3 · 2023: 2 · 2022: 5 · 2021: 2 · 2020: 3 · 2019: 8 · 2018: 2 · 2017: 9 · 2016: 5 · 2015: 6 · 2014: 8 · 2013: 7 · 2012: 7
FWCI: 4.32
Type: journal article
Language: en
Open access: closed
Licence: www.elsevier.com/tdm/userlicense/1.0/ (tdm)
Locations: Brain Research (publishedVersion)
PubMed (publishedVersion)
Funders: National Science Foundation
National Institutes of Health (5r01ns033247-08, 5k02da000375-09, 1f31da005617-01)
National Institute on Drug Abuse (F31DA05617, K02 DA-00375)
National Institute of Neurological Disorders and Stroke (NS 33247)
Topics: Health Sciences › Medicine › Pharmacology (medical) › Cannabis and Cannabinoid Research
Health Sciences › Medicine › Physiology (medical) › Pain Mechanisms and Treatments
Life Sciences › Neuroscience › Cognitive Neuroscience › Pain Management and Placebo Effect
Keywords: cannabinoid analgesia, antinociception, WIN 55,212-2, intracerebral microinjection, amygdala, thalamus, superior colliculus, tail-flick test, pain behavior, cannabinoid receptor agonists
MeSH terms: Amygdala, Analgesics, Animals, Brain Chemistry, Cannabinoids, Male, Microinjections, Morpholines, Naphthalenes, Nociceptors, Norepinephrine, Pain, Pain Measurement, Reaction Time, Superior Colliculi, Thalamus, Rats, Sprague-Dawley, Benzoxazines, Rats

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Anatomical basis for cannabinoid-induced antinociception as revealed by intracerebral microinjections

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