Evidence map›Paper›PMID 31248923›Full record

ArticleBMJ open2019

Sleep-Cognition Hypothesis In maritime Pilots, what is the effect of long-term work-related poor sleep on cognition and amyloid accumulation in healthy middle-aged maritime pilots: methodology of a case-control study.

Jana Thomas, Sharon Ooms, Marcel Verbeek, Jan Booij, Mark Rijpkema, Roy P C Kessels, Sebastiaan Overeem, Jurgen Claassen

Open access · goldAbstract read
In one paragraph

Article in BMJ open, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.4field-weighted citation impact, top 17% 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

7 citing papers in PubMed, 15 citations in OpenAlex.

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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

8 authors at 2 institutions in 1 country.

Jana ThomasGeriatric Medicine, Radboudumc, Nijmegen, The Netherlands.ORCID 0000-0002-8249-7369
Sharon OomsGeriatric Medicine, Radboudumc, Nijmegen, The Netherlands.
Marcel VerbeekRadboud Alzheimer Center, Nijmegen, The Netherlands.
Jan BooijRadiology and Nuclear Medicine, Academic Medical Center, Amsterdam, The Netherlands.
Mark RijpkemaRadiology and Nuclear Medicine, Radboudumc, Nijmegen, The Netherlands.
Roy P C KesselsRadboud Alzheimer Center, Nijmegen, The Netherlands.ORCID 0000-0001-9500-9793
Sebastiaan OvereemEindhoven Medtech Innovation Center, Eindhoven University of Technology, Eindhoven, The Netherlands.
Jurgen ClaassenGeriatric Medicine, Radboudumc, Nijmegen, The Netherlands.
Radboud University Nijmegen · NLKempenhaeghe · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionEvidence indicates a bidirectional relationship between poor sleep and Alzheimer's disease (AD). While AD may lead to disruption of normal sleep, poor sleep in itself may play a causal role in the development of AD by influencing the production and/or clearance of the amyloid-beta (Aβ) protein. This led to the hypothesis that extended periods (>10 years) of sleep loss could lead to Aβ accumulation with subsequent cognitive AD-related decline. This manuscript describes the methodology of the SCHIP study, a cohort study in maritime pilots that aims at investigating the relationship between prolonged work-related sleep loss, cognitive function and amyloid accumulation among healthy middle-aged maritime pilots, to test the hypothesis that prolonged sleep loss increases the risk of AD-related cognitive decline.

methodsOur study sample consists of a group of healthy middle-aged maritime pilots (n=20), who have been exposed to highly irregular work schedules for more than 15 years. The maritime pilots will be compared to a group of healthy, age and education-matched controls (n=20) with normal sleep. Participants will complete 10 days of actigraphy (Actiwatch 2, Philips Respironics) combined with a sleep-wake diary. They will undergo one night of polysomnography, followed by comprehensive assessment of cognitive function. Additionally, participants will undergo amyloid positron emission tomography-CT to measure brain amyloid accumulation and MRI to investigate atrophy and vascular changes. ANALYSIS: All analyses will be performed using IBM SPSS V.20.0 (SPSS). We will perform independent samples t-tests to compare all outcome parameters. ETHICS AND DISSEMINATION: The study protocol was approved by our institutional ethical review board (NL55712.091.16, file number 2016-2337) and will be performed according to Good Clinical Practice rules. Data and results will be published in 2020.

Indexed as

Alzheimer DiseaseAmyloid beta-PeptidesCognitionCohort StudiesHumansMiddle AgedResearch DesignSleep DeprivationWork Schedule ToleranceAmyloid beta-Peptidesalzheimer’s diseaseamyloid accumulationcognitive functionneurodegenerationsleep

Identifiers

PMID31248923
PMCPMC6597630
OpenAlexW2955803397

What Socratic holds

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LicenceCC BY-NC
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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 Socratic graph.