Cited by 90Cannabis and Cannabinoid ResearchPain Mechanisms and TreatmentsPain Management and Treatment

Repeated treatment with the synthetic cannabinoid WIN 55,212-2 reduces both hyperalgesia and production of pronociceptive mediators in a rat model of neuropathic pain

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Costa, B, Colleoni, M, Conti, S, Trovato, A E, Bianchi, M, Sotgiu, M L, Giagnoni, G·2004·British Journal of Pharmacology

Abstract

The antinociceptive properties of cannabinoids in persistent pain are not fully elucidated. We investigated the effect of repeated treatment with the synthetic cannabinoid receptor agonist WIN 55,212-2 on the neuropathic pain induced in rats by chronic constriction of the sciatic nerve. WIN 55,212-2 administered daily throughout the development of neuropathy reversed the hyperalgesia, at a dose (0.1 mg x kg(-1), s.c.) that had no effect on the nociceptive responses of either paw contralateral to the sciatic ligation or of animals subjected to sham surgery. At 14 days after injury, the levels of mediators known to be involved in neuropathic pain, such as prostaglandin E2, NO and the neuronal NOS, were increased. Repeated treatment with WIN 55,212-2 abolished these increases. In the light of the current clinical need for neuropathic pain treatments, these findings indicate that cannabinoid agonists, at doses devoid of psychoactive effects, could constitute important compounds for the development of new analgesics.

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  • WIN55,212-2 normalizes prostaglandin E2 levels and nitric oxide activity, two mediators of neuropathic pain that are increased following CCI.

    “WIN55,212-2 also normalizes prostaglandin E2 (PGE2) levels and nitric oxide (NO) activity, two mediators of neuropathic pain that are increased following CCI.48”

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Authors
Costa, B., Colleoni, M., Conti, S., Trovato, A. E., Bianchi, M., Sotgiu, M. L., & Giagnoni, G.
Affiliations
  • University of Milano-Bicocca (IT)
  • University of Milan (IT)
  • National Research Council (IT)
Corresponding author
Costa, B
Venue
British Journal of Pharmacology
Publisher
Wiley
Published
2004-01
Volume
141
Issue
1
Pages
4-8
ISSN
  • 0007-1188 (ISSN-L)
  • 1476-5381
OpenAlex
W2048760742
Cited by
89
References
21
Citations by year
2026: 1 · 2024: 2 · 2022: 2 · 2021: 2 · 2020: 3 · 2019: 5 · 2018: 1 · 2017: 2 · 2016: 2 · 2015: 2 · 2014: 5 · 2013: 9 · 2012: 4
FWCI
6.21
Type
journal article
Language
en
Open access
Locations
  • British Journal of Pharmacology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • BOA (University of Milano-Bicocca) (submittedVersion)
Topics
  • Health Sciences › Medicine › Pharmacology › Cannabis and Cannabinoid Research
  • Health Sciences › Medicine › Physiology › Pain Mechanisms and Treatments
  • Health Sciences › Medicine › Anesthesiology and Pain Medicine › Pain Management and Treatment
Keywords
WIN 55,212-2, synthetic cannabinoids, neuropathic pain, chronic constriction injury, sciatic nerve, hyperalgesia, antinociception, prostaglandin E2, nitric oxide, neuronal nitric oxide synthase, cannabinoid receptor agonists, analgesic drug development
MeSH terms
Analgesics, Animals, Cannabinoids, Disease Models, Animal, Drug Administration Schedule, Hot Temperature, Hyperalgesia, Injections, Subcutaneous, Male, Morpholines, Naphthalenes, Nitric Oxide, Nociceptors, Pain Measurement, Sciatic Nerve, Time Factors, Dinoprostone, Rats, Wistar, Nitric Oxide Synthase, Sciatic Neuropathy, Receptors, Cannabinoid, Benzoxazines, Rats, Nitric Oxide Synthase Type I

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