Evidence map›Paper›PMID 25581910›Full record

ArticleAnesthesiology2015

Individual differences in acute pain-induced endogenous analgesia predict time to resolution of postoperative pain in the rat.

Christopher M Peters, Ken-Ichiro Hayashida, Takashi Suto, Timothy T Houle, Carol A Aschenbrenner, Thomas J Martin, James C Eisenach

Open access · bronzeAbstract read
In one paragraph

Article in Anesthesiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
5.1field-weighted citation impact, top 4% 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

26 citing papers in PubMed, 46 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Descending Control Mechanisms and Chronic Pain.Current rheumatology reports · 2019
    Review
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Analgesic Mechanisms of Antidepressants for Neuropathic Pain.International journal of molecular sciences · 2017
    Review
  19. Review
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 1 institution in 1 country.

Christopher M PetersFrom the Department of Anesthesiology, Wake Forest University School of Medicine, Winston-Salem, North Carolina.
Ken-Ichiro Hayashida
Takashi Suto
Timothy T Houle
Carol A Aschenbrenner
Thomas J Martin
James C Eisenach
Wake Forest University · US

Funding

WORKER PROTECTION AGAINST AIRBORNE INFLUENZA - A PILOT STUDYM01RR007122 · NCRR · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI HUNDLEY, WILLIAM GREGORY · 1992 to 2010
$35.2M
Receptor Selective Spinal AnalgesiaR37GM048085 · NIGMS · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI EISENACH, JAMES · 2011 to 2020
$3.7M
Mechanisms and Consequences of Locus Coeruleus ActivationR01DA027690 · NIDA · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI HAYASHIDA, KENICHIRO · 2010 to 2014
$1.4M
Mechanisms Involved in the Transition of Acute to Chronic Pain after SurgeryR01GM099863 · NIGMS · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI PETERS, CHRISTOPHER MICHAEL · 2012 to 2016
$1.3M
NCRR NIH HHS M01 RR007122NIDA NIH HHS R01 DA027690NIDA NIH HHS R01-DA27690NIGMS NIH HHS R01 GM099863NIGMS NIH HHS R01-GM099863NIGMS NIH HHS R37 GM048085NIGMS NIH HHS R37-GM44805
6 · The paper itself

Abstract

backgroundChronic postsurgical pain, a significant public health problem, occurs in 10 to 50% of patients undergoing major surgery. Acute pain induces endogenous analgesia termed conditioned pain modulation (CPM), and the strength of CPM preoperatively predicts the likelihood of chronic postsurgical pain. The relation between CPM and recovery from surgery has not been examined in preclinical models.

methodsCPM was assessed in individual rats and correlated with each animal's time course of recovery of hypersensitivity after partial spinal nerve ligation. The role of descending noradrenergic pathways in the spinal cord to mechanisms of CPM and recovery was tested using idazoxan to block noradrenergic receptors or antidopamine β-hydroxylase-conjugated saporin to ablate these pathways. Behavioral hypersensitivity, static weight bearing, and spinal glial activation were measured after partial spinal nerve ligation.

resultsThe strength of CPM varied over two-fold between individuals and was directly correlated with the slope of recovery from hypersensitivity after surgery (P < 0.0001; r = 0.660). CPM induced the release of norepinephrine in the spinal cord and was partially blocked by intrathecal idazoxan or dopamine β-hydroxylase-saporin. Dopamine β-hydroxylase-saporin also slowed recovery and enhanced spinal glial activation after partial spinal nerve ligation surgery. Ongoing activation of these pathways was critical to sustained recovery because intrathecal dopamine β-hydroxylase-saporin given 7 weeks after recovery reinstituted hypersensitivity, while having no effect in animals without previous surgery.

conclusionCollectively, these studies provide a clear back-translation from clinical observations of CPM and chronic postsurgical pain and suggest that the ability to engage ongoing descending endogenous noradrenergic signaling may be critical in determining time course of recovery from hypersensitivity after surgery.

Indexed as

Acute PainAnalgesiaAnimalsMalePostoperative PainPredictive Value of TestsPyramidal TractsRatsRats, Sprague-DawleyTime Factors

Identifiers

PMID25581910
PMCPMC4366291
OpenAlexW2066001783

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.