Cited by 63Migraine and Headache StudiesPain Mechanisms and TreatmentsCannabis and Cannabinoid Research

Effects of peripheral FAAH blockade on NTG-induced hyperalgesia—evaluation of URB937 in an animal model of migraine

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Greco, R, Bandiera, T, Mangione, AS, Demartini, C, Siani, F, Nappi, G, Sandrini, G, Guijarro, A +3 more·2015·Cephalalgia

Abstract

Background: Systemic nitroglycerin (NTG) activates brain nuclei involved in nociceptive transmission as well as in neuroendocrine and autonomic functions in rats. These changes are considered relevant for migraine because NTG consistently provokes spontaneous-like migraine attacks in migraineurs. Several studies have suggested a relationship between the endocannabinoid levels and pain mediation in migraine. URB937, a peripheral inhibitor of fatty acid amide hydrolase (FAAH)—the enzyme that degrades anandamide, produces analgesia in animal models of pain, but there is no information on its effects in migraine. Aim: We evaluated whether URB937 alters nociceptive responses in the animal model of migraine based on NTG administration in male rats, using the tail flick test and the plantar and orofacial formalin tests, under baseline conditions and after NTG administration. Furthermore, we investigated whether URB937 affects NTG-induced c-Fos expression in the brain. Results: During the tail flick test, URB937 showed an antinociceptive effect in baseline conditions and it blocked NTG-induced hyperalgesia. URB937 also proved effective in counteracting NTG-induced hyperalgesia during both the plantar and orofacial formalin tests. Mapping of brain nuclei activated by NTG indicates that URB937 significantly reduces c-Fos expression in the nucleus trigeminalis caudalis and the locus coeruleus. Conclusions: The data suggest that URB937 is capable of changing, probably via indirect mechanisms, the functional status of central structures that are important for pain transmission in an animal model of migraine.

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Crossref · 10.1177/0333102414566862

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Authors
Greco, R., Bandiera, T., Mangione, A., Demartini, C., Siani, F., Nappi, G., Sandrini, G., Guijarro, A., Armirotti, A., Piomelli, D., & Tassorelli, C.
Affiliations
  • Fondazione Istituto Neurologico Nazionale Casimiro Mondino (IT)
  • Italian Institute of Technology (IT)
  • Laboratory of Neurophysiology of Integrative Autonomic Systems, Headache Science Centre, C. Mondino National Neurological Institute, Italy
  • University of Pavia (IT)
  • University of California System (US)
Corresponding author
Greco, R
Venue
Cephalalgia
Published
2015-01-21
Volume
35
Issue
12
Pages
1065-1076
ISSN
  • 0333-1024 (ISSN-L)
  • 1468-2982
OpenAlex
W1991879618
Cited by
63
References
43
Citations by year
2026: 3 · 2025: 7 · 2024: 1 · 2023: 2 · 2022: 10 · 2021: 4 · 2020: 7 · 2019: 7 · 2018: 6 · 2017: 8 · 2016: 5 · 2015: 3
FWCI
5.95
Type
journal article
Language
en
Open access
Locations
  • Cephalalgia (publishedVersion)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion, cc-by)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Migraine and Headache Studies
  • Health Sciences › Medicine › Physiology › Pain Mechanisms and Treatments
  • Health Sciences › Medicine › Pharmacology › Cannabis and Cannabinoid Research
Keywords
fatty acid amide hydrolase inhibition, nitroglycerin, hyperalgesia, endocannabinoid system, anandamide, antinociception, Fos expression, nucleus caudalis, locus coeruleus, orofacial pain, tail-flick test
MeSH terms
Fatty Acid Amide Hydrolases, Amidohydrolases, Analgesics, Animals, Cannabinoids, Disease Models, Animal, Dose-Response Relationship, Drug, Nitroglycerin, Hyperalgesia, Male, Treatment Outcome, Rats, Sprague-Dawley, Rats, Pain Perception

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