Evidence map›Paper›PMID 27564986›Full record

ArticleThe European journal of neuroscience2016

Relative contribution of the dorsal raphe nucleus and ventrolateral periaqueductal gray to morphine antinociception and tolerance in the rat.

Kyle N Campion, Kimber A Saville, Michael M Morgan

Abstract read
In one paragraph

Article in The European journal of neuroscience, 2016. 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. Dorsal raphe nucleus enkephalin peptide modulates behavioral preference.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026
    Article
  2. Article
  3. Article
  4. Convergent state-control of endogenous opioid analgesia.bioRxiv : the preprint server for biology · 2025
    Article
  5. Divergent modulation of pain and anxiety by GABAergic neurons in the ventrolateral periaqueductal gray and dorsal raphe.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2023
    Article
  6. Cannabigerol modulates αFrontiers in pharmacology · 2023
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. 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

3 authors.

Kyle N CampionDepartment of Psychology, Washington State University Vancouver, 14204 NE Salmon Creek Ave., Vancouver, WA, 98686-9600, USA.
Kimber A SavilleDepartment of Psychology, Washington State University Vancouver, 14204 NE Salmon Creek Ave., Vancouver, WA, 98686-9600, USA.
Michael M MorganDepartment of Psychology, Washington State University Vancouver, 14204 NE Salmon Creek Ave., Vancouver, WA, 98686-9600, USA. mmmorgan@wsu.edu.

Funding

Cellular Mechanisms of Opioid ToleranceR01DA015498 · NIDA · WASHINGTON STATE UNIVERSITY · PI MORGAN, MICHAEL M · 2003 to 2010
$2.0M
NIDA NIH HHS R01 DA015498
6 · The paper itself

Abstract

The dorsal raphe nucleus (DRN) is embedded in the ventral part of the caudal periaqueductal gray (PAG). Electrical or chemical activation of neurons throughout this region produces antinociception. The objective of this manuscript is to determine whether the ventrolateral PAG and DRN are distinct antinociceptive systems. This hypothesis was tested by determining the antinociceptive potency of microinjecting morphine into each structure (Experiment 1), creating a map of effective microinjection sites that produce antinociception (Experiment 2) and comparing the development of antinociceptive tolerance to repeated microinjections of morphine into the ventrolateral PAG and DRN (Experiment 3). Morphine was more potent following cumulative injections (1.0, 2.2, 4.6 & 10 μg/0.2 μL) into the ventrolateral PAG (D

Indexed as

NociceptionAnalgesics, OpioidAnimalsDrug ToleranceInjections, IntraventricularMaleMorphinePeriaqueductal GrayRaphe NucleiRatsRats, Sprague-DawleyAnalgesics, OpioidMorphineanalgesiamicroinjectionopioidpain modulationperiaqueductal gray

Identifiers

PMID27564986
PMCPMC5300757

What OpenQuestion holds

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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.