Evidence map›Paper›PMID 27278681›Full record

ArticleBritish journal of pharmacology2016

Opioid and cannabinoid synergy in a mouse neuropathic pain model.

Nicholas P Kazantzis, Sherelle L Casey, Patrick W Seow, Vanessa A Mitchell, Christopher W Vaughan

Open access · bronzeAbstract read
In one paragraph

Article in British journal of pharmacology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
4.7field-weighted citation impact, top 5% 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

31 citing papers in PubMed, 73 citations in OpenAlex.

  1. Impact of co-administration of oxycodone and smoked cannabis on analgesia and abuse liability.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2018
    Trial
  2. Glucocorticoid-endocannabinoid crosstalk in the ventrolateral periaqueductal gray (vlPAG) promotes pain resolution.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026
    Article
  3. Article
  4. Cannabinoid CBBiomedicine & pharmacotherapy = Biomedecine & pharmacotherapie · 2024
    Article
  5. Unveiling the link between chronic pain and misuse of opioids and cannabis.Journal of neural transmission (Vienna, Austria : 1996) · 2024
    Review
  6. Article
  7. Review
  8. Article
  9. Article
  10. The endocannabinoid system and breathing.Frontiers in neuroscience · 2023
    Review
  11. Review
  12. Cannabinoid 1 and mu-Opioid Receptor Agonists Synergistically Inhibit Abdominal Pain and Lack Side Effects in Mice.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2022
    Article
  13. Article
  14. Article
  15. Review
  16. Article
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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 at 1 institution in 1 country.

Nicholas P KazantzisPain Management Research Institute, Kolling Institute of Medical Research, Northern Clinical School, University of Sydney at Royal North Shore Hospital, St Leonards, NSW, Australia.
Sherelle L CaseyPain Management Research Institute, Kolling Institute of Medical Research, Northern Clinical School, University of Sydney at Royal North Shore Hospital, St Leonards, NSW, Australia.
Patrick W SeowPain Management Research Institute, Kolling Institute of Medical Research, Northern Clinical School, University of Sydney at Royal North Shore Hospital, St Leonards, NSW, Australia.
Vanessa A MitchellPain Management Research Institute, Kolling Institute of Medical Research, Northern Clinical School, University of Sydney at Royal North Shore Hospital, St Leonards, NSW, Australia.
Christopher W VaughanPain Management Research Institute, Kolling Institute of Medical Research, Northern Clinical School, University of Sydney at Royal North Shore Hospital, St Leonards, NSW, Australia.
Royal North Shore Hospital · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeClinical studies have reported that pan-cannabinoid receptor agonists may have efficacy in neuropathic pain states and that this might be enhanced by co-administration with opioids. While cannabinoid-opioid analgesic synergy has been demonstrated in animal models of acute pain, it has not been examined in neuropathic pain models. We examined the effect of combination treatment with cannabinoid and opioid receptor agonists on allodynia and side effects in a nerve injury-induced neuropathic pain model. EXPERIMENTAL APPROACH: C57BL/6 mice were subjected to chronic constriction injury (CCI) of the sciatic nerve. The effects of systemic administration of morphine and the pan-cannabinoid receptor agonist, WIN55212, on allodynia and side effects were examined at 7-10 days post-CCI surgery. Isobolographic analysis was used to determine whether the effects of the combination were synergistic. KEY

resultsThe opioid agonist morphine reduced CCI-induced mechanical and cold allodynia and produced motor incoordination, in a dose-dependent manner. WIN55212 reduced CCI-induced allodynia and produced motor incoordination, catalepsy and sedation, in a dose-dependent manner, as we have observed previously. When administered together, WIN55212 and morphine reduced allodynia in a synergistic manner but had only an additive effect on motor incoordination. CONCLUSIONS AND IMPLICATIONS: These findings indicate that administration of a combination of a non-selective opioid and cannabinoid receptor agonist synergistically reduces nerve injury-induced allodynia, while producing side effects in an additive manner. This suggests that this combination treatment has an improved anti-allodynic potency and therapeutic index in a neuropathic pain model.

Indexed as

Disease Models, AnimalAnalgesics, OpioidAnimalsCannabinoidsDose-Response Relationship, DrugDrug SynergismMaleMiceMice, Inbred C57BLMorphineNeuralgiaStructure-Activity RelationshipAnalgesics, OpioidCannabinoidsMorphine

Identifiers

PMID27278681
PMCPMC4959956
OpenAlexW2417541532

What OpenQuestion holds

Textmetadata
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.