Evidence map›Paper›PMID 22993050›Full record

ArticlePsychopharmacology2013

Modification of the behavioral effects of morphine in rats by serotonin 5-HT₁A and 5-HT₂A receptor agonists: antinociception, drug discrimination, and locomotor activity.

Jun-Xu Li, Aparna P Shah, Sunny K Patel, Kenner C Rice, Charles P France

Abstract read
In one paragraph

Article in Psychopharmacology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
1.3field-weighted citation impact, top 20% 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

21 citing papers in PubMed, 1 synthesis or guideline pooled it, 33 citations in OpenAlex.

  1. Associations of the 5-hydroxytryptamine (serotonin) receptor 1B gene (HTR1B) with alcohol, cocaine, and heroin abuse.American journal of medical genetics. Part B, Neuropsychiatric genetics : the official publication of the International Society of Psychiatric Genetics · 2013
    Pooled it
  2. The imidazoline IPsychopharmacology · 2024
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  7. Effects of 5-HTAddiction biology · 2021
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  10. Plasmodium berghei-induced malaria decreases pain sensitivity in mice.The Onderstepoort journal of veterinary research · 2021
    Article
  11. mRNA Levels of MAOA and 5-HTFrontiers in psychiatry · 2021
    Article
  12. Article
  13. Article
  14. Article
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  16. Article
  17. Review
  18. Effects of the trace amine-associated receptor 1 agonist RO5263397 on abuse-related effects of cocaine in rats.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2014
    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

5 authors at 2 institutions in 1 country.

Jun-Xu LiDepartment of Pharmacology, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229-3900, USA.
Aparna P Shah
Sunny K Patel
Kenner C Rice
Charles P France
The University of Texas Health Science Center at San Antonio · USNational Institute on Alcohol Abuse and Alcoholism · US

Funding

DISCRIMINATIVE STIMULUS OF OPIOID WITHDRAWALR01DA005018 · NIDA · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI FRANCE, CHARLES P · 1988 to 2025
$8.8M
Medicinal Chemistry of Drugs Acting on Biogenic Amine ReceptorsZIADA000532 · NIDA · NATIONAL INSTITUTE ON DRUG ABUSE · PI RICE, KENNER · 2009 to 2020
$4.5M
Behavioral Pharmacology of Drug DependenceK05DA017918 · NIDA · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI FRANCE, CHARLES P · 2005 to 2014
$1.2M
Intramural NIH HHSNIDA NIH HHS K05 DA017918NIDA NIH HHS R01 DA005018NIDA NIH HHS R01DA05018PHS HHS K0517918
6 · The paper itself

Abstract

rationaleIndirect-acting serotonin (5-HT) receptor agonists can enhance the antinociceptive effects of morphine; however, the specific 5-HT receptor subtype(s) mediating this enhancement is not established.

objectiveThis study examined interactions between morphine and both 5-HT(1A) and 5-HT(2A) receptor agonists in rats using measures of antinociception (radiant heat tail flick and warm water tail withdrawal), drug discrimination (3.2 mg/kg morphine versus saline), and locomotion.

methodsMale Sprague-Dawley rats (n = 7-8 per group) were used to examine the effects of morphine alone and in combination with DOM (5-HT(2A) agonist) and 8-OH-DPAT (5-HT(1A) agonist).

resultsDOM did not modify antinociceptive or discriminative stimulus effects while modestly attenuating locomotor-stimulating effects of morphine; the effect of DOM (0.32 mg/kg) on morphine-induced locomotion was prevented by the 5-HT(2A) receptor-selective antagonist MDL 100907. In contrast, 8-OH-DPAT (0.032-0.32 mg/kg) fully attenuated the antinociceptive effects (both procedures), did not modify the discriminative stimulus effects, and enhanced (0.32 mg/kg) the locomotor-stimulating effects of morphine. These effects of 8-OH-DPAT were prevented by the 5-HT(1A) receptor-selective antagonist WAY100635.

conclusionAgonists acting at 5-HT(1A) or 5-HT(2A) receptors do not modify all effects of mu opioid receptor agonists in a similar manner. Moreover, interactions between 5-HT and opioid receptor agonists vary significantly between rats and nonhuman primates, underscoring the value of comparing drug interactions across a broad range of conditions and in multiple species.

Indexed as

AnalgesicsAnimalsDiscrimination, PsychologicalDose-Response Relationship, DrugMaleMorphineMotor ActivityPainPain MeasurementRatsRats, Sprague-DawleyReceptor, Serotonin, 5-HT1AReceptor, Serotonin, 5-HT2ASerotonin 5-HT1 Receptor AgonistsSerotonin 5-HT2 Receptor AgonistsAnalgesicsMorphineReceptor, Serotonin, 5-HT1AReceptor, Serotonin, 5-HT2ASerotonin 5-HT1 Receptor AgonistsSerotonin 5-HT2 Receptor Agonists

Identifiers

PMID22993050
PMCPMC3549012
OpenAlexW2015679394

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.