Evidence map›Paper›PMID 25863271›Full record

ArticlePharmacology, biochemistry, and behavior2015

Gonadal hormones do not alter the development of antinociceptive tolerance to delta-9-tetrahydrocannabinol in adult rats.

Alexa A Wakley, Jenny L Wiley, Rebecca M Craft

Abstract read
In one paragraph

Article in Pharmacology, biochemistry, and behavior, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
3.7field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

18 citing papers in PubMed, 24 citations in OpenAlex.

  1. Sex-dependent effects of cannabis-induced analgesia.Drug and alcohol dependence · 2016
    Trial
  2. Article
  3. Article
  4. Review
  5. Sex differences and the endocannabinoid system in pain.Pharmacology, biochemistry, and behavior · 2021
    Review
  6. Article
  7. Article
  8. Lasting effects of repeated ∆British journal of pharmacology · 2020
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Sex-Dependent Effects of Cannabis and Cannabinoids: A Translational Perspective.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2018
    Review
  14. Gonadal hormone modulation of ∆Pharmacology, biochemistry, and behavior · 2017
    Article
  15. Review
  16. Review
  17. The impact of gonadal hormones on cannabinoid dependence.Experimental and clinical psychopharmacology · 2015
    Article
  18. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 2 institutions in 1 country.

Alexa A WakleyDepartment of Psychology, WA State University, USA.
Jenny L WileyRTI International, USA.
Rebecca M CraftDepartment of Psychology, WA State University, USA. Electronic address: craft@wsu.edu.
Craft Engineering Associates (United States) · USRTI International · US

Funding

Sex Differences in Cannabinoid Dependence and Analgesia (parent grant)R01DA016644 · NIDA · VIRGINIA COMMONWEALTH UNIVERSITY · PI WILEY, JENNY L. · 2004 to 2016
$3.9M
NIDA NIH HHS DA016644NIDA NIH HHS R01 DA016644
6 · The paper itself

Abstract

The purpose of this study was to determine whether sex differences in the development of antinociceptive tolerance to delta-9-tetrahydrocannabinol (THC) are due to activational effects of gonadal hormones. Rats were sham-gonadectomized (sham-GDX) or gonadectomized (GDX). GDX females received no hormone replacement (GDX+0), estradiol (GDX+E2), progesterone (GDX+P4), or both (GDX+E2/P4). GDX male rats received no hormone (GDX+0) or testosterone (GDX+T). Two weeks later, antinociceptive potency of THC was determined (pre-chronic test) on the warm water tail withdrawal and paw pressure assays. Vehicle or a sex-specific THC dose (females, 5.7mg/kg, males, 9.9mg/kg) was administered twice-daily for 9days, then the THC dose-effect curves were re-determined (post-chronic test). On the pre-chronic test (both assays), THC was more potent in sham-GDX females than males, and gonadectomy did not alter this sex difference. In GDX females, P4 significantly decreased THC's antinociceptive potency, whereas E2 had no effect. In GDX males, T did not alter THC's antinociceptive potency. After chronic THC treatment, THC's antinociceptive potency was decreased more in sham-GDX females than males, on the tail withdrawal test; this sex difference in tolerance was not altered in GDX or hormone-treated groups. These results suggest that greater antinociceptive tolerance in females, which occurred despite females receiving 40% less THC than males, is not due to activational effects of gonadal hormones.

Indexed as

Drug ToleranceAnalgesicsAnimalsDose-Response Relationship, DrugDronabinolEstradiolFemaleMaleOrchiectomyOvariectomyPain MeasurementProgesteroneRatsSex CharacteristicsTestosteroneAnalgesicsDronabinolEstradiolProgesteroneTestosteroneCannabinoidEstradiolProgesteroneSex differencesTestosterone

Identifiers

PMID25863271
PMCPMC4430373
OpenAlexW2077607805

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.