Evidence map›Paper›PMID 18220076›Full record

ArticleSleep2008

Selective 5HT2A and 5HT6 receptor antagonists promote sleep in rats.

Stephen R Morairty, Linda Hedley, Judith Flores, Renee Martin, Thomas S Kilduff

Open access · bronzeAbstract read
In one paragraph

Article in Sleep, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
4.3field-weighted citation impact, top 5% 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

37 citing papers in PubMed, 113 citations in OpenAlex.

  1. Article
  2. Article
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  4. A sleepy cannabis constituent: cannabinol and its active metabolite influence sleep architecture in rats.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2025
    Article
  5. ACS pharmacology & translational science · 2023
    Article
  6. Activation of the nociceptin/orphanin-FQ receptor promotes NREM sleep and EEG slow wave activity.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  7. Article
  8. Review
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  15. Serotonin and brain function: a tale of two receptors.Journal of psychopharmacology (Oxford, England) · 2017
    Review
  16. Article
  17. Article
  18. Article
  19. The Dual Hypocretin Receptor Antagonist Almorexant is Permissive for Activation of Wake-Promoting Systems.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2016
    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 3 institutions in 2 countries.

Stephen R MorairtyBiosciences Division, SRI International, Menlo Park, CA 94025, USA. stephen.morairty@sri.com
Linda Hedley
Judith Flores
Renee Martin
Thomas S Kilduff
SRI International · USRoche (Switzerland) · CHRoche (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

STUDY

objectivesSerotonin (5-HT) has long been implicated in the control of sleep and wakefulness. This study evaluated the hypnotic efficacy of the 5-HT6 antagonist RO4368554 (RO) and the 5-HT2A receptor antagonist MDL100907 (MDL) relative to zolpidem.

designA randomized, repeated-measures design was utilized in which Wistar rats received intraperitoneal injections of RO (1.0, 3.0, and 10 mg/kg), MDL (0.1, 1.0 and 3.0 mg/kg), zolpidem (10 mg/kg), or vehicle in the middle of the dark (active) period. Electroencephalogram, electromyogram, body temperature (Tb) and locomotor activity were analyzed for 6 hours after injection. MEASUREMENTS AND

resultsRO, MDL, and zolpidem all produced significant increases in sleep and decreases in waking, compared with vehicle control. All 3 doses of MDL produced more consolidated sleep, increased non-rapid eye movement sleep (NREM) sleep, and increased electroencephalographic delta power during NREM sleep. The highest dose of RO (10.0 mg/kg) produced significant increases in sleep and decreases in waking during hour 2 following dosing. These increases in sleep duration were associated with greater delta power during NREM sleep. ZO Zolpidem induced sleep with the shortest latency and significantly increased NREM sleep and delta power but also suppressed rapid eye movement sleep sleep; in contrast, neither RO nor MDL affected rapid eye movement sleep. Whereas RO did not affect Tb, both zolpidem and MDL reduced Tb relative to vehicle-injected controls.

conclusionsThese results support a role for 5-HT2A receptor modulation in NREM sleep and suggest a previously unrecognized role for 5-HT6 receptors in sleep-wake regulation.

Indexed as

Serotonin 5-HT2 Receptor AntagonistsAnimalsBehavior, AnimalBody TemperatureFluorobenzenesIndolesMalePiperazinesPiperidinesRatsRats, Sprague-DawleyReceptors, SerotoninSleep, REMWakefulnessFluorobenzenesIndolesPiperazinesPiperidinesReceptors, SerotoninRo4368554Serotonin 5-HT2 Receptor Antagonistsserotonin 6 receptorvolinanserin

Identifiers

PMID18220076
PMCPMC2225549
OpenAlexW2099291117

What OpenQuestion holds

Textmetadata
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.