Cited by 147Cannabis and Cannabinoid ResearchPain Mechanisms and TreatmentsCancer Treatment and Pharmacology

Activation of cannabinoid CB1 and CB2 receptors suppresses neuropathic nociception evoked by the chemotherapeutic agent vincristine in rats

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Rahn, E J, Makriyannis, A, Hohmann, A G·2007·British Journal of Pharmacology

Abstract

Background and purpose: The ability of cannabinoids to suppress mechanical hypersensitivity (mechanical allodynia) induced by treatment with the chemotherapeutic agent vincristine was evaluated in rats. Sites of action were subsequently identified. Experimental approach: Mechanical hypersensitivity developed over the course of ten daily injections of vincristine relative to groups receiving saline at the same times. Effects of the CB 1/CB 2 receptor agonist WIN55,212‐2, the receptor‐inactive enantiomer WIN55,212‐3, the CB 2‐selective agonist (R,S)‐AM1241, the opiate agonist morphine and vehicle on chemotherapy‐induced neuropathy were evaluated. WIN55,212‐2 was administered intrathecally (i.t.) or locally in the hindpaw to identify sites of action. Pharmacological specificity was established using competitive antagonists for CB 1 (SR141716) or CB 2 receptors (SR144528). Key results: Systemic administration of WIN55,212‐2, but not WIN55,212‐3, suppressed vincristine‐evoked mechanical allodynia. A leftward shift in the dose‐response curve was observed following WIN55,212‐2 relative to morphine treatment. The CB 1 (SR141716) and CB 2 (SR144528) antagonists blocked the anti‐allodynic effects of WIN55,212‐2. (R,S)‐AM1241 suppressed vincristine‐induced mechanical hypersensitivity through a CB 2 mechanism. Both cannabinoid agonists suppressed vincristine‐induced mechanical hypersensitivity without inducing catalepsy. Spinal sites of action are implicated in cannabinoid modulation of chemotherapy‐induced neuropathy. WIN55,212‐2, but not WIN55,212‐3, administered i.t. suppressed vincristine‐evoked mechanical hypersensitivity at doses that were inactive following local hindpaw administration. Spinal coadministration of both the CB 1 and CB 2 antagonists blocked the anti‐allodynic effects of WIN55,212‐2. Conclusions and implications: Cannabinoids suppress the maintenance of vincristine‐induced mechanical allodynia through activation of CB 1 and CB 2 receptors. These anti‐allodynic effects are mediated, at least in part, at the level of the spinal cord. British Journal of Pharmacology (2007) 152, 765–777; doi:10.1038/sj.bjp.0707333; published online 18 June 2007

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Authors
Rahn, E. J., Makriyannis, A., & Hohmann, A. G.
Affiliations
  • University of Georgia (US)
  • Northeastern University (US)
Corresponding author
Hohmann, A G
Venue
British Journal of Pharmacology
Publisher
Wiley
Published
2007-11
Volume
152
Issue
5
Pages
765-777
ISSN
  • 0007-1188 (ISSN-L)
  • 1476-5381
OpenAlex
W1542530495
Cited by
146
References
70
Citations by year
2026: 3 · 2025: 7 · 2024: 9 · 2023: 9 · 2022: 11 · 2021: 11 · 2020: 15 · 2019: 5 · 2018: 8 · 2017: 4 · 2016: 6 · 2015: 5 · 2014: 7 · 2013: 10 · 2012: 11
FWCI
4.43
Type
journal article
Language
en
Open access
Locations
  • British Journal of Pharmacology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Psi Chi
  • American Psychological Association of Graduate Students
  • National Institute on Drug Abuse (DA3801, DA022478, DA 9158, R01DA003801, R21DA022478, R01DA021644, R01DA014022, R37DA003801, DA014022, P01DA009158, DA021644)
Topics
  • Health Sciences › Medicine › Pharmacology › Cannabis and Cannabinoid Research
  • Health Sciences › Medicine › Physiology › Pain Mechanisms and Treatments
  • Health Sciences › Medicine › Oncology › Cancer Treatment and Pharmacology
Keywords
CB1 receptor, CB2 receptor, vincristine, chemotherapy-induced peripheral neuropathy, mechanical allodynia, neuropathic pain, WIN 55,212-2, SR141716, SR144528, morphine, spinal cord, intrathecal administration
MeSH terms
Rimonabant, Animals, Body Weight, Camphanes, Cannabinoids, Catalepsy, Dose-Response Relationship, Drug, Hindlimb, Hyperesthesia, Injections, Intraperitoneal, Injections, Spinal, Male, Morphine, Morpholines, Naphthalenes, Neuralgia, Pain Measurement, Physical Stimulation, Piperidines, Pyrazoles, Thermosensing, Vincristine, Rats, Sprague-Dawley, Pain Threshold, Receptor, Cannabinoid, CB1, Receptor, Cannabinoid, CB2, Benzoxazines, Rats

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