Evidence map›Paper›PMID 21664434›Full record

ArticleNeuroscience2011

Activation of peripheral delta-opioid receptors leads to anti-hyperalgesic responses in the masseter muscle of male and female rats.

J L Saloman, K Y Niu, J Y Ro

Abstract read
In one paragraph

Article in Neuroscience, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
1.9field-weighted citation impact, top 15% 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

25 citing papers in PubMed, 44 citations in OpenAlex.

  1. Trial
  2. Review
  3. Review
  4. Article
  5. Article
  6. Plasma Pro-Enkephalin A and Ischemic Stroke Risk: The Reasons for Geographic and Racial Differences in Stroke Cohort.Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association · 2022
    Article
  7. Article
  8. Peripherally Acting Opioids in Orofacial Pain.Frontiers in neuroscience · 2021
    Review
  9. Alleviating pain with delta opioid receptor agonists: evidence from experimental models.Journal of neural transmission (Vienna, Austria : 1996) · 2020
    Review
  10. Article
  11. Article
  12. Review
  13. Molecular Pharmacology of δ-Opioid Receptors.Pharmacological reviews · 2016
    Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. 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 at 1 institution in 1 country.

J L SalomanProgram in Neuroscience, Department of Neural and Pain Sciences, University of Maryland Baltimore School of Dentistry, 650 W. Baltimore Street, Baltimore, MD 21201, USA.
K Y Niu
J Y Ro
University of Maryland, Baltimore · US

Funding

Sex-Differences in Peripheral Opioid Receptor MechanismsR01DE019448 · NIDCR · UNIVERSITY OF MARYLAND BALTIMORE · PI RO, JIN Y · 2008 to 2012
$1.8M
NIDCR NIH HHS R01 DE019448NIDCR NIH HHS R01 DE19448
6 · The paper itself

Abstract

In this project, we examined peripheral δ-opioid receptor (DOR)-mediated anti-hyperalgesic responses in the context of an acute orofacial muscle pain condition in both male and female rats. We also investigated whether the ATP-sensitive K+ channel (KATP), a downstream target of OR signaling, contributes to DOR-mediated anti-hyperalgesic responses. Local pretreatment of the masseter with a DOR agonist, [D-Pen², D-Pen⁶]-enkephalin (DPDPE), dose-dependently attenuated capsaicin-induced mechanical hypersensitivity in both male and female rats. However, there were sex differences in the potency of local DPDPE in that a 10-fold higher dose of DPDPE was required in female rats to produce the level of anti-hyperalgesia achieved in male rats. The sex differences in the DPDPE effect may not be fully explained by DOR expression level since there was no significant sex difference in DOR mRNA levels in trigeminal ganglia (TG). Finally, pretreatment of the masseter with the KATP antagonist, glibenclamide, significantly blocked the effects of DPDPE in male rats suggesting that the peripheral DOR effect is mediated by the KATP. These studies revealed novel information about sex differences with regards to peripherally localized DOR-mediated anti-hyperalgesia under an orofacial muscle pain condition.

Indexed as

Analgesics, OpioidAnimalsEnkephalin, D-Penicillamine (2,5)-Facial PainFemaleHyperalgesiaMaleMasseter MuscleRatsRats, Sprague-DawleyReceptors, Opioid, deltaSex CharacteristicsAnalgesics, OpioidEnkephalin, D-Penicillamine (2,5)-Receptors, Opioid, delta

Identifiers

PMID21664434
PMCPMC3156332
OpenAlexW2066418823

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.