Evidence map›Paper›PMID 22330867›Full record

ArticleJournal of the American Association for Laboratory Animal Science : JAALAS2012

Using the Mouse Grimace Scale to reevaluate the efficacy of postoperative analgesics in laboratory mice.

Lynn C Matsumiya, Robert E Sorge, Susana G Sotocinal, John M Tabaka, Jeffrey S Wieskopf, Austin Zaloum, Oliver D King, Jeffrey S Mogil

Open access · greenAbstract readComparative Study
In one paragraph

Article in Journal of the American Association for Laboratory Animal Science : JAALAS, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 142 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
142citing papers in PubMed, 3 pooled it
18.4field-weighted citation impact, top 1% 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

142 citing papers in PubMed, 3 syntheses or guidelines pooled it, 225 citations in OpenAlex.

  1. Pooled it
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  9. A Review of Assessment of Sow Pain During Farrowing Using Grimace Scores.Animals : an open access journal from MDPI · 2025
    Review
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  16. The IPBiochimica et biophysica acta. Molecular basis of disease · 2025
    Article
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  20. Article

82 more citing papers are in PubMed but not listed here.

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

8 authors at 1 institution in 1 country.

Lynn C MatsumiyaComparative Medicine and Animal Resources Centre, McGill University, Montreal, Canada.
Robert E Sorge
Susana G Sotocinal
John M Tabaka
Jeffrey S Wieskopf
Austin Zaloum
Oliver D King
Jeffrey S Mogil
McGill University · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Postoperative pain management in animals is complicated greatly by the inability to recognize pain. As a result, the choice of analgesics and their doses has been based on extrapolation from greatly differing pain models or the use of measures with unclear relevance to pain. We recently developed the Mouse Grimace Scale (MGS), a facial-expression-based pain coding system adapted directly from scales used in nonverbal human populations. The MGS has shown to be a reliable, highly accurate measure of spontaneous pain of moderate duration, and therefore is particularly useful in the quantification of postoperative pain. In the present study, we quantified the relative intensity and duration of postoperative pain after a sham ventral ovariectomy (laparotomy) in outbred mice. In addition, we compiled dose-response data for 4 commonly used analgesics: buprenorphine, carprofen, ketoprofen, and acetaminophen. We found that postoperative pain in mice, as defined by facial grimacing, lasts for 36 to 48 h, and appears to show relative exacerbation during the early dark (active) photophase. We find that buprenorphine was highly effective in inhibiting postoperative pain-induced facial grimacing in mice at doses equal to or lower than current recommendations, that carprofen and ketoprofen are effective only at doses markedly higher than those currently recommended, and that acetaminophen was ineffective at any dose used. We suggest the revision of practices for postoperative pain management in mice in light of these findings.

Indexed as

Animals, LaboratoryFacial ExpressionAcetaminophenAnalgesicsAnimalsBuprenorphineCarbazolesDose-Response Relationship, DrugKetoprofenMicePain MeasurementPostoperative PainResearch DesignTime FactorsVideo RecordingAcetaminophenAnalgesicsBuprenorphineCarbazolescarprofenKetoprofen

Identifiers

PMID22330867
PMCPMC3276965
OpenAlexW1479971025

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.