Evidence map›Paper›PMID 33975149›Full record

Trial reportPsychoneuroendocrinology2021

Trait positive affect buffers the association between experimental sleep disruption and inflammation.

Carly A Hunt, Michael T Smith, Chung Jung Mun, Michael R Irwin, Patrick H Finan

Open access · greenAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Psychoneuroendocrinology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
2.0field-weighted citation impact, top 14% 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

8 citing papers in PubMed, 1 synthesis or guideline pooled it, 13 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Review
  6. Review
  7. Article
  8. 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 2 institutions in 1 country.

Carly A HuntDepartment of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA. Electronic address: chunt8@jhmi.edu.
Michael T SmithDepartment of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Chung Jung MunDepartment of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Michael R IrwinCousins Center for Psychoneuroimmunology, UCLA Semel Institute for Neuroscience, Los Angeles, CA, USA.
Patrick H FinanDepartment of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Johns Hopkins Medicine · USJohns Hopkins University · US

Funding

Interdisciplinary Training in Biobehavioral Pain ResearchT32NS070201 · NINDS · JOHNS HOPKINS UNIVERSITY · PI DONG, XINZHONG, SMITH, MICHAEL T · 2010 to 2024
$3.6M
Mechanisms of Sleep Disruption HyperalgesiaR01DA032922 · NIDA · JOHNS HOPKINS UNIVERSITY · PI IRWIN, MICHAEL R, SMITH, MICHAEL T · 2012 to 2016
$2.7M
Sleep disturbance as a putative mechanism for reward system dysfunctionK23DA035915 · NIDA · JOHNS HOPKINS UNIVERSITY · PI FINAN, PATRICK · 2014 to 2018
$838k
Evaluating dynamic associations between pain catastrophizing and the effect of cannabinoidsF32DA049393 · NIDA · JOHNS HOPKINS UNIVERSITY · PI MUN, CHUNG JUNG · 2019 to 2020
$127k
NIDA NIH HHS F32 DA049393NIDA NIH HHS K23 DA035915NIDA NIH HHS R01 DA032922NINDS NIH HHS T32 NS070201
6 · The paper itself

Abstract

backgroundSleep disturbances and insufficient sleep are highly prevalent. Both clinical sleep disorders and multiple forms of experimental sleep loss predict heightened inflammation. As such, it is necessary to investigate potential protective factors. Given that trait positive affect (PA) is associated with reduced inflammation, and buffers the proinflammatory effects of stress, it is possible that high trait positive affect might protect individuals from an inflammatory response to sleep disruption. The present study tested this hypothesis in an experimental sleep disruption paradigm with assessment of cellular inflammation.

methodsData were drawn from good sleeping adults (n = 79) who participated in a randomized, within-subjects crossover experiment comparing the effects of two nights of sleep disruption versus two nights of uninterrupted sleep. Stimulated monocytic production of intracellular proinflammatory cytokines tumor necrosis factor (TNF) and interleukin-6 (IL-6) were assayed using flow cytometric methods and indexed as the percentage of monocytes expressing TNF, IL-6, or co-expressing both. Hypotheses were evaluated using linear mixed effects models.

resultsControlling for negative affect, body mass index, age, and sex, PA significantly moderated the associations between sleep condition and stimulated monocyte production of IL-6 (b = -1.03, t = -2.02, p = .048) and its co-expression with TNF (b = -0.93, t = -2.00, p = .049), such that inflammatory responses were blunted among those high in PA with increases principally among those low in PA. The effect on TNF was similar in terms of effect size, but marginally significant.

conclusionsActivation of cellular inflammation in response to sleep disruption is buffered by PA independent of negative affect. Interventions that promote PA might protect persons from the inflammatory activation following sleep loss, with the potential to mitigate the adverse health consequences of sleep disturbance.

Indexed as

AffectProtective FactorsSleepAdultCross-Over StudiesFemaleHappinessHumansInflammationInterleukin-6MaleMonocytesPleasureSleep DeprivationTumor Necrosis Factor-alphaInterleukin-6Tumor Necrosis Factor-alphaExperimental sleep disruptionInterleukin-6Positive affectStimulated monocyte productionTumor necrosis factor

Identifiers

PMID33975149
PMCPMC8314429
OpenAlexW3159675070

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.