Evidence map›Paper›PMID 31901236›Full record

ArticleAlzheimer's research & therapy2020

Sleep dysregulation, memory impairment, and CSF biomarkers during different levels of neurocognitive functioning in Alzheimer's disease course.

Claudio Liguori, Fabio Placidi, Francesca Izzi, Matteo Spanetta, Nicola Biagio Mercuri, Alessandra Di Pucchio

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in Alzheimer's research & therapy, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 46 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed, 4 pooled it
4.5field-weighted citation impact, top 4% 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

46 citing papers in PubMed, 4 syntheses or guidelines pooled it, 71 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Trial
  6. A gradual and sustainable approach to diagnosing sleep and circadian disturbances in dementia.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Review
  7. Sleep fragmentation correlates with amyloid beta deposition at brain autopsy.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Article
  8. Wake-promoting neuromodulators in Alzheimer's disease: Implications for sleep and brain clearance.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Review
  9. Review
  10. Article
  11. Article
  12. Sleep Abnormalities and Risk of Alzheimer's Disease.Current neurology and neuroscience reports · 2025
    Review
  13. Article
  14. Article
  15. Article
  16. Tauopathy after long-term cervical lymphadenectomy.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Article
  17. Article
  18. Review
  19. Article
  20. Neuropsychiatric symptom burden in early-onset and late-onset Alzheimer's disease as a function of age.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2024
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 1 country.

Claudio LiguoriSleep Medicine Centre, Department of Systems Medicine, University of Rome 'Tor Vergata", Rome, Italy. dott.claudioliguori@yahoo.it.ORCID http://orcid.org/0000-0003-2845-1332
Fabio PlacidiSleep Medicine Centre, Department of Systems Medicine, University of Rome 'Tor Vergata", Rome, Italy.
Francesca IzziSleep Medicine Centre, Department of Systems Medicine, University of Rome 'Tor Vergata", Rome, Italy.
Matteo SpanettaSleep Medicine Centre, Department of Systems Medicine, University of Rome 'Tor Vergata", Rome, Italy.
Nicola Biagio MercuriNeurology Unit, Department of Systems Medicine, University of Rome 'Tor Vergata", Viale Oxford, 81 00133, Rome, Italy.
Alessandra Di PucchioTraining Office, Italian National Institute of Health (Istituto Superiore di Sanità), Rome, Italy.
University of Rome Tor Vergata · ITIstituto Superiore di Sanità · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAlzheimer's disease (AD) is frequently accompanied by sleep impairment, which can induce AD-related neurodegeneration. We herein investigated the sleep architecture, cognition, and cerebrospinal fluid (CSF) biomarkers (tau proteins and β-amyloid

methodsWe included patients affected by SCI, MCI, mild AD, and moderate-to-severe AD in our study along with CN subjects as controls. All the subjects underwent nocturnal polysomnography to investigate sleep, neuropsychological testing to evaluate cognition, and lumbar puncture for CSF AD biomarkers assessment.

resultsSleep (both rapid eye movement (REM) and non-REM sleep) and memory function are both progressively impaired during the course of AD from SCI to mild and subsequently to moderate AD. Further, sleep dysregulation appears earlier than cognitive deterioration, with a reduction of CSF β-amyloid

conclusionSleep, memory, and CSF AD biomarkers are closely interrelated in AD progression from the earliest asymptomatic and preclinical stages of the disease related in AD since the earliest and preclinical stages of the disease.

Indexed as

AdultAgedAged, 80 and overAlzheimer DiseaseAmyloid beta-PeptidesBiomarkersCognitive DysfunctionDisease ProgressionFemaleHumansMaleMemory DisordersMiddle AgedSleep Wake Disorderstau ProteinsAmyloid beta-PeptidesBiomarkersMAPT protein, humantau ProteinsAlzheimer’s diseaseCSF biomarkersSleep

Identifiers

PMID31901236
PMCPMC6942389
OpenAlexW2996856743

What OpenQuestion holds

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LicenceCC BY
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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 OpenQuestion graph.