Evidence map›Paper›PMID 27247922›Full record

ArticleAvicenna journal of phytomedicine

Attenuation of morphine tolerance and dependence by thymoquinone in mice.

Hossein Hosseinzadeh, Siavash Parvardeh, Alireza Masoudi, Mahsa Moghimi, Fatemeh Mahboobifard

Abstract read
In one paragraph

Article in Avicenna journal of phytomedicine. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
–field-weighted citation impact
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

14 citing papers in PubMed.

  1. The cannabinoid CBNeuropharmacology · 2025
    Article
  2. Article
  3. Article
  4. Cannabinoid CBBiomedicine & pharmacotherapy = Biomedecine & pharmacotherapie · 2024
    Article
  5. Article
  6. Article
  7. Plants with Anti-Addictive Potential.Advances in experimental medicine and biology · 2021
    Article
  8. Article
  9. Thymoquinone: FromIranian journal of basic medical sciences · 2020
    Review
  10. Article
  11. Role of L-arginine/NO/cGMP/KIranian journal of basic medical sciences · 2018
    Article
  12. Slowly Signaling G Protein-Biased CBMolecular pharmacology · 2018
    Article
  13. Review
  14. 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

5 authors.

Hossein HosseinzadehPharmaceutical Research Center, Department of Pharmacodynamy and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
Siavash ParvardehDepartment of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Alireza MasoudiDepartment of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Mahsa MoghimiDepartment of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Fatemeh MahboobifardDepartment of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveDependence and tolerance are major restricting factors in the clinical use of opioid analgesics. In the present study, the effects of thymoquinone, the major constituent of Nigella sativa seeds, on morphine dependence and tolerance were investigated in mice. MATERIALS AND

methodsMale adult NMRI mice were made tolerant and dependent by repeated injections of morphine (50, 50, and 75 mg/kg, i.p. on 9 a.m., 1 p.m., and 5 p.m., respectively) during a 3-day administration schedule. The hot-plate test was used to assess tolerance to the analgesic effects of morphine. Naloxone (2 mg/kg, i.p.) was injected to precipitate withdrawal syndrome in order to assess the morphine dependence. To evaluate the effects of thymoquinone on tolerance and dependence to morphine, different single or repeated doses of thymoquinone were administered in mice. Rotarod was used to assess the motor coordination.

resultsAdministration of single or repeated doses of thymoquinone (20 and 40 mg/kg, i.p.) significantly decreased the number of jumps in morphine dependent animals. Repeated administration of thymoquinone (20 and 40 mg/kg, for 3 days) and also single injection of thymoquinone (40 mg/kg, on the fourth day) attenuated tolerance to the analgesic effect of morphine. None of the thymoquinone doses (10, 20, and 40 mg/kg) produced any antinociceptive effects on their own. Motor coordination of animals was impaired by the high dose of thymoquinone (40 mg/kg).

conclusionBased on these results, it can be concluded that thymoquinone prevents the development of tolerance and dependence to morphine.

Indexed as

DependenceMorphineNigella sativapainThymoquinoneTolerance

Identifiers

PMID27247922
PMCPMC4884218

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Registered trials

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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.