Cited by 70Cannabis and Cannabinoid ResearchPain Mechanisms and TreatmentsIon Channels and Receptors

Fatty Acid Binding Protein Deletion Suppresses Inflammatory Pain through Endocannabinoid/N-Acylethanolamine-Dependent Mechanisms

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Kaczocha, Martin, Glaser, Sherrye T., Maher, Thomas, Clavin, Brendan, Hamilton, John, Rourke, Joseph O', Rebecchi, Mario, Puopolo, Michelino +2 more·2015·Molecular Pain

Abstract

Background: Fatty acid binding proteins (FABPs) serve as intracellular carriers that deliver endocannabinoids and N-acylethanolamines to their catabolic enzymes. Inhibition of FABPs reduces endocannabinoid transport and catabolism in cells and FABP inhibitors produce antinociceptive and anti-inflammatory effects in mice. Potential analgesic effects in mice lacking FABPs, however, have not been tested. Findings: Mice lacking FABP5 and FABP7, which exhibit highest affinities for endocannabinoids, possessed elevated levels of the endocannabinoid anandamide and the related N-acylethanolamines palmitoylethanolamide and oleoylethanolamide. There were no compensatory changes in the expression of other FABPs or in endocannabinoid-related proteins in the brains of FABP5/7 knockout mice. These mice exhibited reduced nociception in the carrageenan, formalin, and acetic acid tests of inflammatory and visceral pain. The antinociceptive effects in FABP5/7 knockout mice were reversed by pretreatment with cannabinoid receptor 1, peroxisome proliferator-activated receptor alpha, and transient receptor potential vanilloid 1 receptor antagonists in a modality specific manner. Lastly, the knockout mice did not possess motor impairments. Conclusions: This study demonstrates that mice lacking FABPs possess elevated levels of N-acylethanolamines, consistent with the idea that FABPs regulate the endocannabinoid and N-acylethanolamine tone in vivo. The antinociceptive effects observed in the knockout mice support a role for FABPs in regulating nociception and suggest that these proteins should serve as targets for the development of future analgesics.

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Authors
Kaczocha, M., Glaser, S. T., Maher, T., Clavin, B., Hamilton, J., Rourke, J. O., Rebecchi, M., Puopolo, M., Owada, Y., & Thanos, P. K.
Affiliations
  • Stony Brook University (US)
  • Kingsborough Community College (US)
  • Tohoku University (JP)
Corresponding author
Kaczocha, Martin
Venue
Molecular Pain
Published
2015-01-01
Volume
11
Pages
52-52
ISSN
1744-8069 (ISSN-L)
OpenAlex
W1962384335
Cited by
68
References
24
Citations by year
2026: 5 · 2025: 6 · 2024: 9 · 2023: 6 · 2022: 14 · 2021: 2 · 2020: 3 · 2019: 3 · 2018: 5 · 2017: 8 · 2016: 7
FWCI
5.04
Type
journal article
Language
en
Open access
Locations
  • Molecular Pain (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • CUNY Academic Works (City University of New York) (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
National Institute on Drug Abuse (DA035949)
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
fatty acid binding protein, FABP5, FABP7, endocannabinoids, N-acylethanolamines, anandamide, palmitoylethanolamide, oleoylethanolamide, inflammatory pain, visceral pain, antinociception, CB1 receptor, PPARα, TRPV1, analgesic targets, knockout mice
MeSH terms
Fatty Acid-Binding Protein 7, Animals, Ethanolamines, Inflammation, Male, Mice, Inbred C57BL, Motor Activity, Neoplasm Proteins, Nerve Tissue Proteins, Pain, Mice, Knockout, Fatty Acid-Binding Proteins, Nociception, Endocannabinoids

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