Evidence map›Paper›PMID 21174080›Full record

ArticlePsychopharmacology2011

Effects of serotonin (5-HT)1A and 5-HT2A receptor agonists on schedule-controlled responding in rats: drug combination studies.

Jun-Xu Li, Caroline Crocker, Wouter Koek, Kenner C Rice, Charles P France

Open access · greenAbstract readComparative Study
In one paragraph

Article in Psychopharmacology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
0.7field-weighted citation impact, top 35% 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

7 citing papers in PubMed, 11 citations in OpenAlex.

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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

5 authors at 2 institutions in 1 country.

Jun-Xu LiDepartment of Pharmacology, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229-3900, USA.
Caroline Crocker
Wouter Koek
Kenner C Rice
Charles P France
The University of Texas Health Science Center at San Antonio · USNational Institutes of Health · 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 K05 DA17918NIDA NIH HHS R01 DA005018
6 · The paper itself

Abstract

rationaleIndirect-acting serotonin (5-HT) receptor agonists (e.g., selective 5-HT reuptake inhibitors [SSRI]) stimulate multiple 5-HT receptors, although the role of particular receptors as well as interaction(s) among different receptors in the therapeutic effects of SSRIs is not fully understood.

objectivesRelatively few studies have systematically examined direct-acting agonists in combination. This study examined the 5-HT(1A) receptor agonists 8-hydroxy-2-(di-n-propylamino) tetralin hydrochloride (8-OH-DPAT; 0.01-10.0 mg/kg) and 3-chloro-4-fluorophenyl-4-fluoro-4-([(5-methyl-6-methylamino-pyridin-2-ylmethyl)-amino]-methyl)-piperidin-1-yl-methanone (F13714; 0.01-1.0 mg/kg) and the 5-HT(2A) receptor agonists 1-(2,5-dimethoxy-4-methylphenyl)-2-aminopropane (DOM; 0.32-10.0 mg/kg) and dipropyltryptamine (DPT; 1.0-32.0 mg/kg), alone and in combination, in rats responding under a fixed ratio schedule of food presentation.

resultsWhen administered alone, each drug decreased the rate of responding in a dose-related manner with the potency order being F13714 > 8-OH-DPAT > DOM > DPT. WAY100635 (5-HT(1A) receptor antagonist; 0.01-0.1 mg/kg) attenuated the rate-decreasing effects of 8-OH-DPAT and F13714 while MDL100907 (5-HT(2A) receptor antagonist; 0.01-0.1 mg/kg) attenuated the rate-decreasing effects of DOM and DPT. Dose addition analysis showed that the interaction between 8-OH-DPAT and F13714, as well as the interaction between DOM and DPT, was additive. In contrast, the interaction between 8-OH-DPAT and DOM, as well as the interaction between F13714 and DOM, was infra-additive.

conclusionsThis study shows that for some dose combinations, agonist actions at one 5-HT receptor subtype attenuate agonist actions at another 5-HT receptor subtype; thus, the combined neuropharmacological actions and therapeutic effects of indirect-acting agonists are not likely to be adequately characterized by examining in isolation activity at particular 5-HT receptor subtypes.

Indexed as

Reinforcement ScheduleAnimalsBehavior, AnimalDose-Response Relationship, DrugDrug InteractionsDrug Therapy, CombinationMaleRatsRats, Sprague-DawleySerotonin 5-HT1 Receptor AgonistsSerotonin 5-HT2 Receptor AgonistsSerotonin 5-HT1 Receptor AgonistsSerotonin 5-HT2 Receptor Agonists

Identifiers

PMID21174080
PMCPMC4144073
OpenAlexW2045403365

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.