Cited by 72Cannabis and Cannabinoid ResearchPain Mechanisms and TreatmentsPain Management and Placebo Effect

Acute resistance exercise induces antinociception by activation of the endocannabinoid system in rats

Open access
Galdino, Giovane, Romero, Thiago, Pinho da Silva, José Felippe, Aguiar, Daniele, de Paula, Ana Maria, Cruz, Jader, Parrella, Cosimo, Piscitelli, Fabiana +3 more·2014·Anesthesia & Analgesia

Abstract

BACKGROUND: Resistance exercise (RE) is also known as strength training, and it is performed to increase the strength and mass of muscles, bone strength, and metabolism. RE has been increasingly prescribed for pain relief. However, the endogenous mechanisms underlying this antinociceptive effect are still largely unexplored. Thus, we investigated the involvement of the endocannabinoid system in RE-induced antinociception. METHODS: Male Wistar rats were submitted to acute RE in a weight-lifting model. The nociceptive threshold was measured by a mechanical nociceptive test (paw pressure) before and after exercise. To investigate the involvement of cannabinoid receptors and endocannabinoids in RE-induced antinociception, cannabinoid receptor inverse agonists, endocannabinoid metabolizing enzyme inhibitors, and an anandamide reuptake inhibitor were injected before RE. After RE, CB1 cannabinoid receptors were quantified in rat brain tissue by Western blot and immunofluorescence. In addition, endocannabinoid plasma levels were measured by isotope dilution-liquid chromatography mass spectrometry. RESULTS: RE-induced antinociception was prevented by preinjection with CB1 and CB2 cannabinoid receptor inverse agonists. By contrast, preadministration of metabolizing enzyme inhibitors and the anandamide reuptake inhibitor prolonged and enhanced this effect. RE also produced an increase in the expression and activation of CB1 cannabinoid receptors in rat brain tissue and in the dorsolateral and ventrolateral periaqueductal regions and an increase in endocannabinoid plasma levels. CONCLUSIONS: The present study suggests that a single session of RE activates the endocannabinoid system to induce antinociception.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1213/ane.0000000000000340

Cites

68 of 68 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Exercise-induced elevations of endocannabinoid levels have been proposed to account partially for anxiolytic, anti-nociceptive and neuroprotective properties of exercise.

    “Exerciseinduced elevations of endocannabinoid levels have been proposed to account partially for anxiolytic (Tantimonaco et al., 2014;Fuss et al., 2015), anti-nociceptive (Galdino et al., 2014) and neuroprotective (Hill et al., 2010a) properties of exercise, which are all responses that instead are affected in a negative direction by sleep loss (e.g.Roy-Byrne et al., 1986;Schuh-Hofer et al., 2013;”
  • The increase of circulating endocannabinoids following exercise has been proposed to partially account for anxiolytic, anti-nociceptive, and neuroprotective properties of physical exercise.

    “The increase of circulating levels of endocannabinoids following exercise has been proposed to partially account for the anxiolytic (Tantimonaco et al., 2014), anti-nociceptive (Galdino et al., 2014) and neuroprotective (Hill et al., 2010a) properties of physical exercise.”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 2

  1. [1]Soyannwo OA Kopf A Patel NB Obstacles to Pain Management Guide to Pain Management in Low-Resource Settings 2010 9 11 IASP Press Seatle
  2. [20]Paxinos G Watson C The rat brain in stereotaxic coordinates 1986 Academic Press Toronto 2nd ed

Cited by

Sorted by citations

Authors
Galdino, G., Romero, T., Pinho da Silva, J. F., Aguiar, D., de Paula, A. M., Cruz, J., Parrella, C., Piscitelli, F., Duarte, I., Di Marzo, V., & Perez, A.
Affiliations
  • Universidade Federal de Minas Gerais (BR)
  • Istituto di Chimica Biomolecolare (IT)
Corresponding author
  • Galdino, Giovane
  • Romero, Thiago
  • Aguiar, Daniele
  • Duarte, Igor
Venue
Anesthesia & Analgesia
Published
2014-09
Volume
119
Issue
3
Pages
702-715
ISSN
0003-2999 (ISSN-L)
OpenAlex
W2328951891
Cited by
72
References
68
Citations by year
2026: 2 · 2025: 6 · 2024: 6 · 2023: 7 · 2022: 7 · 2021: 8 · 2020: 9 · 2019: 5 · 2018: 4 · 2017: 10 · 2016: 5 · 2015: 2 · 2014: 1
FWCI
4.36
Type
journal article
Language
en
Open access
Locations
  • Anesthesia & Analgesia (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute on Drug Abuse (P01DA009789, DA 009789)
Topics
  • Health Sciences › Medicine › Pharmacology › Cannabis and Cannabinoid Research
  • Health Sciences › Medicine › Physiology › Pain Mechanisms and Treatments
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Pain Management and Placebo Effect
Keywords
resistance training, antinociception, endocannabinoid system, CB1 receptor, CB2 receptor, anandamide, periaqueductal gray, analgesia, exercise-induced analgesia
MeSH terms
Animals, Chromatography, High Pressure Liquid, Fluorescent Antibody Technique, Injections, Intraventricular, Injections, Spinal, Injections, Subcutaneous, Male, Microinjections, Pain Measurement, Periaqueductal Gray, Physical Conditioning, Animal, Mass Spectrometry, Blotting, Western, Proto-Oncogene Proteins c-fos, Rats, Wistar, Receptor, Cannabinoid, CB1, Rats, Resistance Training, Nociception, Cannabinoid Receptor Agonists, Cannabinoid Receptor Antagonists, Endocannabinoids

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review