Cited by 98Cannabis and Cannabinoid ResearchPain Mechanisms and TreatmentsIon Channels and Receptors

Modulation of neuropathic and inflammatory pain by the endocannabinoid transport inhibitor AM404 [N-(4-hydroxyphenyl)-eicosa-5,8,11,14-tetraenamide]

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La Rana, G., Russo, R., Campolongo, P., Bortolato, M., Mangieri, R.A., Cuomo, V., Iacono, A., Raso, G. Mattace +3 more·2006·The Journal of Pharmacology and Experimental Therapeutics

Abstract

The endocannabinoid system may serve important functions in the central and peripheral regulation of pain. In the present study, we investigated the effects of the endocannabinoid transport inhibitor AM404 [N-(4-hydroxyphenyl)-eicosa-5,8,11,14-tetraenamide] on rodent models of acute and persistent nociception (intraplantar formalin injection in the mouse), neuropathic pain (sciatic nerve ligation in the rat), and inflammatory pain (complete Freund's adjuvant injection in the rat). In the formalin model, administration of AM404 (1-10 mg/kg i.p.) elicited dose-dependent antinociceptive effects, which were prevented by the CB(1) cannabinoid receptor antagonist rimonabant (SR141716A; 1 mg/kg i.p.) but not by the CB2 antagonist SR144528 (1 mg/kg i.p.) or the vanilloid antagonist capsazepine (30 mg/kg i.p.). Comparable effects were observed with UCM707 [N-(3-furylmethyl)-eicosa-5,8,11,14-tetraenamide], another anandamide transport inhibitor. In both the chronic constriction injury and complete Freund's adjuvant model, daily treatment with AM404 (1-10 mg/kg s.c.) for 14 days produced a dose-dependent reduction in nocifensive responses to thermal and mechanical stimuli, which was prevented by a single administration of rimonabant (1 mg/kg i.p.) and was accompanied by decreased expression of cyclooxygenase-2 and inducible nitric-oxide synthase in the sciatic nerve. The results provide new evidence for a role of the endocannabinoid system in pain modulation and point to anandamide transport as a potential target for analgesic drug development.

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Crossref · 10.1124/jpet.105.100792

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Authors
La Rana, G., Russo, R., Campolongo, P., Bortolato, M., Mangieri, R. A., Cuomo, V., Iacono, A., Raso, G. M., Meli, R., Piomelli, D., & Calignano, A.
Venue
The Journal of Pharmacology and Experimental Therapeutics
Publisher
Elsevier BV
Published
2006-06
Volume
317
Issue
3
Pages
1365-1371
ISSN
0022-3565 (ISSN-L)
OpenAlex
W2160725099
Cited by
97
References
44
Citations by year
2026: 2 · 2025: 1 · 2021: 2 · 2020: 3 · 2019: 1 · 2018: 5 · 2017: 4 · 2016: 1 · 2015: 4 · 2014: 3 · 2013: 7 · 2012: 8
FWCI
9.20
Type
journal article
Language
en
Open access
Locations
  • Journal of Pharmacology and Experimental Therapeutics (publishedVersion)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion, cc-by)
  • IRIS UNIMORE (University of Modena and Reggio Emilia) (submittedVersion, cc-by)
  • IRIS Research product catalog (Sapienza University of Rome) (submittedVersion)
Funders
National Institute on Drug Abuse (DA-3412, R01DA012447, DA12447)
Topics
  • Health Sciences › Medicine › Pharmacology › Cannabis and Cannabinoid Research
  • Health Sciences › Medicine › Physiology › Pain Mechanisms and Treatments
  • Life Sciences › Neuroscience › Sensory Systems › Ion Channels and Receptors
Keywords
AM404, endocannabinoid system, neuropathic pain, inflammatory pain, antinociception, CB1 receptor, rimonabant, sciatic nerve ligation, complete Freund's adjuvant, formalin test, cyclooxygenase-2, inducible nitric oxide synthase, analgesic drug development
MeSH terms
Animals, Arachidonic Acids, Biological Transport, Disease Models, Animal, Dose-Response Relationship, Drug, Freund's Adjuvant, Furans, Hyperalgesia, Inflammation, Male, Pain, Pain Measurement, Rats, Wistar, Sciatic Neuropathy, Mice, Rats, Polyunsaturated Alkamides, Cannabinoid Receptor Modulators, Endocannabinoids

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