Cited by 64Cannabis and Cannabinoid ResearchMigraine and Headache StudiesPain Mechanisms and Treatments

Alterations of the endocannabinoid system in an animal model of migraine: Evaluation in cerebral areas of rat

Greco, R, Gasperi, V, Sandrini, G, Bagetta, G, Nappi, G, Maccarrone, M, Tassorelli, C·2010·Cephalalgia

Abstract

Endocannabinoids are involved in the modulation of pain and hyperalgesia. In this study we investigated the role of the endocannabinoid system in the migraine model based on nitroglycerin-induced hyperalgesia in the rat. Male rats were injected with nitroglycerin (10 mg/kg, i.p.) or vehicle and sacrificed 4 h later. The medulla, the mesencephalon and the hypothalamus were dissected out and utilized for the evaluation of activity of fatty acid amide hydrolase (that degrades the endocannabinoid anandamide), monoacylglycerol lipase (that degrades the endocannabinoid 2-arachidonoylglycerol), and binding sites specific for cannabinoid (CB) receptors. The findings obtained show that nitroglycerin-induced hyperalgesia is associated with increased activity of both hydrolases and increased density of CB binding sites in the mesencephalon. In the hypothalamus we observed an increase in the activity of fatty acid amide hydrolase associated with an increase in density of CB binding sites, while in the medulla only the activity of fatty acid amide hydrolase was increased. Anandamide also proved effective in preventing nitroglycerin-induced activation (c-Fos) of neurons in the nucleus trigeminalis caudalis. These data strongly support the involvement of the endocannabinoid system in the modulation of nitroglycerin-induced hyperalgesia, and, possibly, in the pathophysiological mechanisms of migraine.

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Crossref · 10.1111/j.1468-2982.2009.01924.x

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  • Nitroglycerin-induced hyperalgesia in rats is associated with increased activity of both FAAH and MAGL, and increased density of cannabinoid receptors binding sites in the mesencephalon.

    “Another study shows that nitroglycerin-induced hyperalgesia in rats is associated with increased activity of both FAAH and MAGL, and increased density of cannabinoid receptors binding sites in the mesencephalon.”
  • A dysfunction of the endocannabinoid system may contribute to the development of migraine attacks, and modulation of this system can be useful for the treatment of pain associated with migraine.

    “These studies suggest that a dysfunction of the endocannabinoid system may contribute to the development of migraine attacks and modulation of this system can be useful for the treatment of pain associated to migraine.”
  • Cannabinoids act on brain reward pathways; CB1 receptors are co-localized with opioid receptors on dopaminergic cells of the nucleus accumbens.

    “Cannabinoids, like many analgesics and recreational drugs, act on the brain’s reward pathways. Cannabinoid-1 receptors (CB1R) are co-localized with the opioid receptors on the dopaminergic cells of the nucleus accumbens, probably the most important structure in human reward pathways, which partly overlaps the antinociceptive pathways [30–32].”

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Authors
Greco, R., Gasperi, V, Sandrini, G., Bagetta, G., Nappi, G., Maccarrone, M., & Tassorelli, C.
Affiliations
  • University of Pavia (IT)
  • University of Rome Tor Vergata (IT)
  • University of Calabria (IT)
  • University of Teramo (IT)
Corresponding author
Tassorelli, C
Venue
Cephalalgia
Published
2009-07-01
Volume
30
Issue
3
Pages
296-302
ISSN
  • 0333-1024 (ISSN-L)
  • 1468-2982
OpenAlex
W2084872420
Cited by
64
References
50
Citations by year
2026: 3 · 2025: 2 · 2024: 2 · 2023: 5 · 2022: 5 · 2021: 1 · 2020: 4 · 2019: 7 · 2018: 1 · 2017: 10 · 2015: 5 · 2014: 5 · 2013: 3 · 2012: 4
FWCI
2.64
Type
journal article
Language
en
Open access
closed
Locations
  • Cephalalgia (publishedVersion)
  • PubMed (publishedVersion)
  • Cineca Institutional Research Information System (Tor Vergata University) (submittedVersion)
  • Archive of Doctoral Theses and Digital Collections (University of Calabria) (submittedVersion)
  • Archivio Istituzionale della Ricerca - Università degli Studi dell Aquila (submittedVersion)
Topics
  • Health Sciences › Medicine › Pharmacology › Cannabis and Cannabinoid Research
  • Health Sciences › Medicine › Psychiatry and Mental health › Migraine and Headache Studies
  • Health Sciences › Medicine › Physiology › Pain Mechanisms and Treatments
Keywords
endocannabinoid system, migraine, fatty acid amide hydrolase, monoacylglycerol lipase, cannabinoid receptors, anandamide, 2-arachidonoylglycerol, medulla, midbrain, hypothalamus, c-fos, nucleus tractus solitarius, trigeminal neurons, pain modulation
MeSH terms
Fatty Acid Amide Hydrolases, Amidohydrolases, Animals, Brain, Disease Models, Animal, Nitroglycerin, Hyperalgesia, Hypothalamus, Male, Medulla Oblongata, Mesencephalon, Migraine Disorders, Monoacylglycerol Lipases, Trigeminal Caudal Nucleus, Vasodilator Agents, Proto-Oncogene Proteins c-fos, Rats, Sprague-Dawley, Receptors, Cannabinoid, Rats, Cannabinoid Receptor Modulators, Endocannabinoids

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