Evidence map›Paper›PMID 26019008›Full record

ArticleExperimental brain research2015

Sleep alterations following exposure to stress predict fear-associated memory impairments in a rodent model of PTSD.

William M Vanderheyden, Sophie A George, Lea Urpa, Michaela Kehoe, Israel Liberzon, Gina R Poe

Open access · greenAbstract read
In one paragraph

Article in Experimental brain research, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 1 pooled it
3.1field-weighted citation impact, top 9% 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

40 citing papers in PubMed, 1 synthesis or guideline pooled it, 70 citations in OpenAlex.

  1. Pooled it
  2. Trial
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  5. Biomarkers of stress resilience: A review.Neuroscience applied · 2024
    Article
  6. Review
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  8. Posttraumatic stress disorder (PTSD), sleep, and cardiovascular disease risk: A mechanism-focused narrative review.Health psychology : official journal of the Division of Health Psychology, American Psychological Association · 2022
    Review
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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

6 authors at 1 institution in 1 country.

William M VanderheydenDepartment of Anesthesiology, University of Michigan, 7433 Medical Sciences Building 1, 1150 W. Medical Center Drive, Ann Arbor, MI, 48109, USA.
Sophie A George
Lea Urpa
Michaela Kehoe
Israel Liberzon
Gina R Poe
University of Michigan–Ann Arbor · US

Funding

REM SLEEP AND MEMORYR01MH060670 · NIMH · WASHINGTON STATE UNIVERSITY · PI POE, GINA R · 2000 to 2023
$6.4M
University of Michigan Postbaccalaureate Research Education Program (UM PREP)R25GM086262 · NIGMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI ALLEN, BENJAMIN · 2009 to 2024
$6.1M
Multi-Institutional Training in Genetic/Genomic Approaches to Sleep DisordersT32HL110952 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI CHERVIN, RONALD D, MIGNOT, EMMANUEL J · 2013 to 2022
$5.0M
NHLBI NIH HHS T32 HL110952NHLBI NIH HHS T32HL110952-01A1NIGMS NIH HHS R25 GM086262NIMH NIH HHS NIHRO1-MH60670NIMH NIH HHS R01 MH060670
6 · The paper itself

Abstract

Sleep abnormalities, such as insomnia, nightmares, hyper-arousal, and difficulty initiating or maintaining sleep, are diagnostic criteria of posttraumatic stress disorder (PTSD). The vivid dream state, rapid eye movement (REM) sleep, has been implicated in processing emotional memories. We have hypothesized that REM sleep is maladaptive in those suffering from PTSD. However, the precise neurobiological mechanisms regulating sleep disturbances following trauma exposure are poorly understood. Using single prolonged stress (SPS), a well-validated rodent model of PTSD, we measured sleep alterations in response to stressor exposure and over a subsequent 7-day isolation period during which the PTSD-like phenotype develops. SPS resulted in acute increases in REM sleep and transition to REM sleep, and decreased waking in addition to alterations in sleep architecture. The severity of the PTSD-like phenotype was later assessed by measuring freezing levels on a fear-associated memory test. Interestingly, the change in REM sleep following SPS was significantly correlated with freezing behavior during extinction recall assessed more than a week later. Reductions in theta (4-10 Hz) and sigma (10-15 Hz) band power during transition to REM sleep also correlated with impaired fear-associated memory processing. These data reveal that changes in REM sleep, transition to REM sleep, waking, and theta and sigma power may serve as sleep biomarkers to identify individuals with increased susceptibility to PTSD following trauma exposure.

Indexed as

AnimalsBehavior, AnimalBiomarkersBrain WavesDisease Models, AnimalExtinction, PsychologicalFearMaleMemory DisordersMental RecallRatsRats, Long-EvansSleep, REMSleep Wake DisordersStress Disorders, Post-TraumaticBiomarkers

Identifiers

PMID26019008
PMCPMC4827610
OpenAlexW386871370

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.