Evidence map›Paper›PMID 36892930›Full record

ArticleeLife2023

Effects of clozapine-N-oxide and compound 21 on sleep in laboratory mice.

Janine Traut, Jose Prius Mengual, Elise J Meijer, Laura E McKillop, Hannah Alfonsa, Anna Hoerder-Suabedissen, Seo Ho Song, Kristoffer D Fehér, Dieter Riemann, Zoltan Molnar and 3 more

Open access · goldAbstract read
In one paragraph

Article in eLife, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
6.5field-weighted citation impact, top 3% 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

26 citing papers in PubMed, 38 citations in OpenAlex.

  1. Article
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  8. Chronic chemogenetic slow-wave-sleep enhancement in mice.bioRxiv : the preprint server for biology · 2025
    Article
  9. Article
  10. Article
  11. Ventral subiculum promotes wakefulness through several pathways in male mice.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2024
    Article
  12. Article
  13. Neuronal PAS domain 1 identifies a major subpopulation of wakefulness-promoting GABAergic neurons in the basal forebrain.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  14. Article
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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

13 authors at 3 institutions in 5 countries.

Janine Traut *Department of Psychiatry and Psychotherapy, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.ORCID 0000-0002-2169-2670
Jose Prius Mengual *Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom.ORCID 0000-0002-4089-5254
Elise J MeijerDepartment of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom.ORCID 0000-0002-4812-3275
Laura E McKillopDepartment of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom.ORCID 0000-0003-3085-1175
Hannah AlfonsaDepartment of Pharmacology, University of Oxford, Oxford, United Kingdom.ORCID 0000-0002-6357-7494
Anna Hoerder-SuabedissenDepartment of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom.ORCID 0000-0003-1953-7871
Seo Ho SongDepartment of Psychiatry, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, United States.ORCID 0000-0003-2970-2746
Kristoffer D FehérGeneva University Hospitals (HUG), Division of Psychiatric Specialties, Geneva, Switzerland.ORCID 0000-0002-1205-7157
Dieter RiemannDepartment of Psychiatry and Psychotherapy, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.ORCID 0000-0002-1968-6220
Zoltan MolnarDepartment of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom.ORCID 0000-0002-6852-6004
Colin J AkermanDepartment of Pharmacology, University of Oxford, Oxford, United Kingdom.ORCID 0000-0001-6844-4984
Vladyslav V VyazovskiyDepartment of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom.ORCID 0000-0002-4336-6681
Lukas B KroneDepartment of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom.ORCID 0000-0002-5535-7221
University of Oxford · GBUniversity of Bern · CHUniversity of Freiburg · DE

Funding

Medical Research Council G00900901Medical Research Council MR/N026039/1Medical Research Council MR/ S01134X/1Medical Research Council MR/S01134X/1Wellcome TrustWellcome Trust 098461/Z/12/ZWellcome Trust 203971/Z/16/ZWellcome Trust 206500/Z/17/Z
6 · The paper itself

Abstract

Designer receptors exclusively activated by designer drugs (DREADDs) are chemogenetic tools for remote control of targeted cell populations using chemical actuators that bind to modified receptors. Despite the popularity of DREADDs in neuroscience and sleep research, potential effects of the DREADD actuator clozapine-N-oxide (CNO) on sleep have never been systematically tested. Here, we show that intraperitoneal injections of commonly used CNO doses (1, 5, and 10 mg/kg) alter sleep in wild-type male laboratory mice. Using electroencephalography (EEG) and electromyography (EMG) to analyse sleep, we found a dose-dependent suppression of rapid eye movement (REM) sleep, changes in EEG spectral power during non-REM (NREM) sleep, and altered sleep architecture in a pattern previously reported for clozapine. Effects of CNO on sleep could arise from back-metabolism to clozapine or binding to endogenous neurotransmitter receptors. Interestingly, we found that the novel DREADD actuator, compound 21 (C21, 3 mg/kg), similarly modulates sleep despite a lack of back-metabolism to clozapine. Our results demonstrate that both CNO and C21 can modulate sleep of mice not expressing DREADD receptors. This implies that back-metabolism to clozapine is not the sole mechanism underlying side effects of chemogenetic actuators. Therefore, any chemogenetic experiment should include a DREADD-free control group injected with the same CNO, C21, or newly developed actuator. We suggest that electrophysiological sleep assessment could serve as a sensitive tool to test the biological inertness of novel chemogenetic actuators.

Indexed as

ClozapineAnimalsImidazolesMaleMiceOxidesSleepSulfonamidesThiophenesClozapinecompound 21ImidazolesOxidesSulfonamidesThiopheneschemogeneticsclozapine-N-oxidecompound 21DREADDEEGmouseneurosciencesleep

Identifiers

PMID36892930
PMCPMC9998087
OpenAlexW4323652351

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.