Evidence map›Paper›PMID 26984688›Full record

ArticleJournal of anesthesia2016

Ketamine and propofol have opposite effects on postanesthetic sleep architecture in rats: relevance to the endogenous sleep-wakefulness substances orexin and melanin-concentrating hormone.

Tetsuya Kushikata, Masahiro Sawada, Hidetomo Niwa, Tsuyoshi Kudo, Mihoko Kudo, Mitsuru Tonosaki, Kazuyoshi Hirota

Abstract read
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In one paragraph

Article in Journal of anesthesia, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
1.0field-weighted citation impact, top 25% 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

20 citing papers in PubMed, 33 citations in OpenAlex.

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  14. Roles of Neuropeptide S in Anesthesia, Analgesia, and Sleep.Pharmaceuticals (Basel, Switzerland) · 2021
    Review
  15. Perioperative Sleep Disorder: A Review.Frontiers in medicine · 2021
    Review
  16. Review
  17. Article
  18. Article
  19. Sleep science in anesthesiology.Journal of anesthesia · 2019
    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

7 authors at 2 institutions in 1 country.

Tetsuya KushikataDepartment of Anesthesiology, Hirosaki University Graduate School of Medicine, Hirosaki, 036-8562, Japan. tetsuyak@hirosaki-u.ac.jp.
Masahiro SawadaDepartment of Anesthesiology, Hirosaki University Hospital, Hirosaki, 036-8563, Japan.
Hidetomo NiwaDepartment of Anesthesiology, Hirosaki University Graduate School of Medicine, Hirosaki, 036-8562, Japan.
Tsuyoshi KudoDepartment of Anesthesiology, Hirosaki University Graduate School of Medicine, Hirosaki, 036-8562, Japan.
Mihoko KudoDepartment of Anesthesiology, Hirosaki University Graduate School of Medicine, Hirosaki, 036-8562, Japan.
Mitsuru TonosakiDepartment of Anesthesiology, Hirosaki University Hospital, Hirosaki, 036-8563, Japan.
Kazuyoshi HirotaDepartment of Anesthesiology, Hirosaki University Graduate School of Medicine, Hirosaki, 036-8562, Japan.
Hirosaki University · JPHirosaki University Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAnesthesia and surgery disturb sleep. Disturbed sleep adversely affects postoperative complications involving the cardiovascular system, diabetes, and infection. General anesthetics share neuronal mechanisms involving endogenous sleep-wakefulness-related substances, such as orexin (OX) and melanin-concentrating hormone (MCH). We evaluated changes in sleep architecture and the concentration of OX and MCH during the peri-anesthetic period.

methodsTo examine sleep architecture, male Sprague-Dawley rats weighing 350-450 g received ketamine 100 mg/kg (n = 9) or propofol 80 mg/kg (n = 6) by intraperitoneal injection. Electroencephalography was recorded from 2 days pre- to 5 days postanesthesia. To quantify levels of OX and MCH, 144 similar rats received the same doses of ketamine (n = 80) or propofol (n = 64). Brain concentrations of these substances were determined at 0, 20, 60, and 120 min after anesthetic administration.

resultsKetamine decreased OX content in the hypothalamus during the anesthesia period. OX content was restored to pre-anesthesia levels in the hypothalamus and pons. Both anesthetics increased brain MCH content in the postanesthetic period, with the degree of increase being greater with propofol. Ketamine enhanced wakefulness and inhibited non-rapid eye movement sleep (NREMS) immediately after anesthesia. Conversely, propofol inhibited wakefulness and enhanced NREMS in that period. Ketamine inhibited wakefulness and enhanced NREMS during the dark phase on the first postanesthesia day.

conclusionsAnesthetics affect various endogenous sleep-wakefulness-related substances; however, the modulation pattern may depend on the type of anesthetic. The process of postanesthetic sleep disturbance was agent specific. Our results provide fundamental evidence to treat anesthetic-related sleep disturbance.

Indexed as

AnesthesiaAnesthetics, DissociativeAnesthetics, IntravenousAnimalsElectroencephalographyHypothalamic HormonesHypothalamusKetamineMaleMelaninsOrexinsPituitary HormonesPonsPropofolRatsRats, Sprague-DawleyAnesthetics, DissociativeAnesthetics, IntravenousHypothalamic HormonesKetaminemelanin-concentrating hormoneMelaninsOrexinsPituitary HormonesPropofolKetamineMelanin-concentrating hormoneOrexinPropofolSleepSleep disturbance

Identifiers

PMID26984688
OpenAlexW2299139000

What OpenQuestion holds

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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.