Evidence map›Paper›PMID 36045708›Full record

ReviewFrontiers in systems neuroscience2022

Cellular and circuit diversity determines the impact of endogenous opioids in the descending pain modulatory pathway.

Kylie B McPherson, Susan L Ingram

Open access · goldAbstract readReview
In one paragraph

Review in Frontiers in systems neuroscience, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
2.1field-weighted citation impact, top 12% 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

17 citing papers in PubMed, 1 synthesis or guideline pooled it, 21 citations in OpenAlex.

  1. Pooled it
  2. GABAergic neurons in the ventrolateral periaqueductal gray mediate fentanyl withdrawal and self-administration in mice.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026
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  4. Glucocorticoid-endocannabinoid crosstalk in the ventrolateral periaqueductal gray (vlPAG) promotes pain resolution.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026
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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

2 authors at 2 institutions in 2 countries.

Kylie B McPhersonDivision of Neuroscience and Clinical Pharmacology, Department of Biomedical Sciences, University of Cagliari, Monserrato, Italy.
Susan L IngramDepartment of Neurological Surgery, Oregon Health & Science University, Portland, OR, United States.
Neurological Surgery · USOregon Health & Science University · US

Funding

Defining the descending pain modulatory circuitR01NS120486 · NINDS · UNIVERSITY OF COLORADO DENVER · PI HEINRICHER, MARY MAGDALEN, INGRAM, SUSAN L · 2021 to 2025
$2.5M
NINDS NIH HHS R01 NS120486
6 · The paper itself

Abstract

The descending pain modulatory pathway exerts important bidirectional control of nociceptive inputs to dampen and/or facilitate the perception of pain. The ventrolateral periaqueductal gray (vlPAG) integrates inputs from many regions associated with the processing of nociceptive, cognitive, and affective components of pain perception, and is a key brain area for opioid action. Opioid receptors are expressed on a subset of vlPAG neurons, as well as on both GABAergic and glutamatergic presynaptic terminals that impinge on vlPAG neurons. Microinjection of opioids into the vlPAG produces analgesia and microinjection of the opioid receptor antagonist naloxone blocks stimulation-mediated analgesia, highlighting the role of endogenous opioid release within this region in the modulation of nociception. Endogenous opioid effects within the vlPAG are complex and likely dependent on specific neuronal circuits activated by acute and chronic pain stimuli. This review is focused on the cellular heterogeneity within vlPAG circuits and highlights gaps in our understanding of endogenous opioid regulation of the descending pain modulatory circuits.

Indexed as

cellular diversitycircuit diversitydescending pain modulationendogenous opioidsvlPAG

Identifiers

PMID36045708
PMCPMC9421147
OpenAlexW4291884824

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.