Evidence map›Paper›PMID 28541519›Full record

ArticleSleep2017

Reduced Sleep During Social Isolation Leads to Cellular Stress and Induction of the Unfolded Protein Response.

Marishka K Brown, Ewa Strus, Nirinjini Naidoo

Open access · bronzeAbstract read
In one paragraph

Article in Sleep, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
1.3field-weighted citation impact, top 23% 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

19 citing papers in PubMed, 35 citations in OpenAlex.

  1. Environmental modulation of social isolation-induced sleep loss inbioRxiv : the preprint server for biology · 2026
    Article
  2. Review
  3. Early life sleep is associated with longevity inbioRxiv : the preprint server for biology · 2025
    Article
  4. Article
  5. Frontiers in behavioral neuroscience · 2025
    Review
  6. Review
  7. Review
  8. Review
  9. Review
  10. Review
  11. Article
  12. Review
  13. Article
  14. Article
  15. Sleep and Cellular Stress.Current opinion in physiology · 2020
    Article
  16. Article
  17. REM sleep's unique associations with corticosterone regulation, apoptotic pathways, and behavior in chronic stress in mice.Proceedings of the National Academy of Sciences of the United States of America · 2019
    Article
  18. Article
  19. The neurobiological basis of sleep: Insights from Drosophila.Neuroscience and biobehavioral reviews · 2018
    Review
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

3 authors at 1 institution in 1 country.

Marishka K BrownCenter for Sleep and Circadian Neurobiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.
Ewa StrusCenter for Sleep and Circadian Neurobiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.
Nirinjini NaidooCenter for Sleep and Circadian Neurobiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.
University of Pennsylvania · US

Funding

THE ROLE OF SLEEP IN MEMORY STORAGEP01AG017628 · NIA · UNIVERSITY OF PENNSYLVANIA · PI PACK, ALLAN I · 2001 to 2017
$19.2M
TRAINING PROGRAM/RESPIRATORY NEUROBIOLOGY AND SLEEPT32HL007713 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI PACK, ALLAN I · 1992 to 2022
$11.9M
NHLBI NIH HHS T32 HL007713NIA NIH HHS P01 AG017628
6 · The paper itself

Abstract

Study Objectives: Social isolation has a multitude of negative consequences on human health including the ability to endure challenges to the immune system, sleep amount and efficiency, and general morbidity and mortality. These adverse health outcomes are conserved in other social species. In the fruit fly Drosophila melanogaster, social isolation leads to increased aggression, impaired memory, and reduced amounts of daytime sleep. There is a correlation between molecules affected by social isolation and those implicated in sleep in Drosophila. We previously demonstrated that acute sleep loss in flies and mice induced the unfolded protein response (UPR), an adaptive signaling pathway. One mechanism indicating UPR upregulation is elevated levels of the endoplasmic reticular chaperone BiP/GRP78. We previously showed that BiP overexpression in Drosophila led to increased sleep rebound. Increased rebound sleep has also been demonstrated in socially isolated (SI) flies. Methods: D. melanogaster were used to study the effect of social isolation on cellular stress. Results: SI flies displayed an increase in UPR markers; there were higher BiP levels, increased phosphorylation of the translation initiation factor eIF2α, and increased splicing of xbp1. These are all indicators of UPR activation. In addition, the effects of isolation on the UPR were reversible; pharmacologically and genetically altering sleep in the flies modulated the UPR. Conclusions: The reduction in sleep observed in SI flies is a cellular stressor that results in UPR induction.

Indexed as

Social IsolationStress, PhysiologicalAnimalsDNA-Binding ProteinsDrosophila melanogasterDrosophila ProteinsEndoplasmic Reticulum Chaperone BiPEukaryotic Initiation Factor-2FemaleHeat-Shock ProteinsMalePhosphorylationRNA SplicingSignal TransductionSleepUnfolded Protein ResponseDNA-Binding ProteinsDrosophila ProteinsEndoplasmic Reticulum Chaperone BiPEukaryotic Initiation Factor-2Heat-Shock ProteinsHSPA5 protein, humanHspa5 protein, mouseXbp1 protein, Drosophilacellular stressDrosophilasleepsocial isolationunfolded protein response (UPR)

Identifiers

PMID28541519
PMCPMC6075573
OpenAlexW2617778783

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.