Evidence map›Paper›PMID 25424590›Full record

ArticleJournal of anesthesia2015

Acetaminophen and non-steroidal anti-inflammatory drugs interact with morphine and tramadol analgesia for the treatment of neuropathic pain in rats.

Tomonari Shinozaki, Toshihiko Yamada, Takahiro Nonaka, Tatsuo Yamamoto

Abstract read
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Article in Journal of anesthesia, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.0field-weighted citation impact, top 24% 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

13 citing papers in PubMed, 26 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Review
  6. Article
  7. Article
  8. Review
  9. Article
  10. Clinical Management of Pain in Rodents.Comparative medicine · 2019
    Review
  11. Article
  12. Swimming Training Reduces Neuroma Pain by Regulating Neurotrophins.Medicine and science in sports and exercise · 2018
    Article
  13. 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

4 authors at 1 institution in 1 country.

Tomonari ShinozakiDepartment of Anesthesiology, School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Kumamoto-shi, Kumamoto, 860-8556, Japan.
Toshihiko YamadaDepartment of Anesthesiology, School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Kumamoto-shi, Kumamoto, 860-8556, Japan.
Takahiro NonakaDepartment of Anesthesiology, School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Kumamoto-shi, Kumamoto, 860-8556, Japan.
Tatsuo YamamotoDepartment of Anesthesiology, School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Kumamoto-shi, Kumamoto, 860-8556, Japan. yamyam@kumamoto-u.ac.jp.
Kumamoto University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeAlthough non-steroidal anti-inflammatory drugs and acetaminophen have no proven efficacy against neuropathic pain, they are frequently prescribed for neuropathic pain patients. We examined whether the combination of opioids (tramadol and morphine) with indomethacin or acetaminophen produce favorable effects on neuropathic pain and compared the efficacy for neuropathic pain with that for inflammatory pain.

methodsThe carrageenan model was used as the inflammatory pain model while the tibial neuroma transposition (TNT) model was used as the neuropathic pain model. The tibial nerve is transected in the TNT model, with the tibial nerve stump then transpositioned to the lateral aspect of the hindlimb. Neuropathic pain (mechanical allodynia and neuroma pain) is observed after TNT injury. Drugs were administered orally.

resultsIn the carrageenan model, all drugs produced anti-allodynic effects and all drug combinations, but not tramadol + indomethacin combination, produced synergistic anti-allodynic effects. In the TNT model, tramadol and morphine, but not acetaminophen and indomethacin, produced anti-neuropathic pain effects. In the combination, with the exception of morphine + acetaminophen combination, both acetaminophen and indomethacin reduced the 50% effective dose (ED50) of tramadol and morphine as compared with the ED50s for the single drug study in the TNT model. The ED50s of tramadol and morphine in the carrageenan combination test were not statistically significantly different from the ED50s in the TNT model combination study.

conclusionsThe combination of opioids with indomethacin or acetaminophen produced a synergistic analgesic effect both in inflammatory and neuropathic pain with some exceptions. The efficacy of these combinations for neuropathic pain was not different from that for inflammatory pain.

Indexed as

AcetaminophenAnalgesics, Non-NarcoticAnalgesics, OpioidAnimalsAnti-Inflammatory Agents, Non-SteroidalDose-Response Relationship, DrugDrug SynergismDrug Therapy, CombinationHyperalgesiaMaleMorphineNeuralgiaRatsRats, Sprague-DawleyTramadolAcetaminophenAnalgesics, Non-NarcoticAnalgesics, OpioidAnti-Inflammatory Agents, Non-SteroidalMorphineTramadol

Identifiers

PMID25424590
OpenAlexW1964833037

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.