Evidence map›Paper›PMID 32369477›Full record

ArticlePLoS biology2020

Haplotype of the astrocytic water channel AQP4 is associated with slow wave energy regulation in human NREM sleep.

Sara Marie Ulv Larsen, Hans-Peter Landolt, Wolfgang Berger, Maiken Nedergaard, Gitte Moos Knudsen, Sebastian Camillo Holst

Open access · goldAbstract read
In one paragraph

Article in PLoS biology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed
3.3field-weighted citation impact, top 7% 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

42 citing papers in PubMed, 59 citations in OpenAlex.

  1. Influence of an AQP4 haplotype and sleep duration on early Alzheimer's disease.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Article
  2. Article
  3. Review
  4. Review
  5. Article
  6. Cerebral small vessel disease: The impact of glymphopathy and sleep disorders.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2025
    Review
  7. Review
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. dbAQP-SNP: a database of missense single-nucleotide polymorphisms in human aquaporins.Database : the journal of biological databases and curation · 2023
    Article
  18. Article
  19. Article
  20. 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

6 authors at 3 institutions in 2 countries.

Sara Marie Ulv LarsenNeurobiology Research Unit, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark.ORCID 0000-0002-9046-2430
Hans-Peter LandoltInstitute of Pharmacology & Toxicology, University of Zurich, Zurich, Switzerland.ORCID 0000-0003-0887-9403
Wolfgang BergerZurich Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland.
Maiken NedergaardCenter for Translational Neuromedicine, University of Copenhagen, Copenhagen, Denmark.
Gitte Moos KnudsenNeurobiology Research Unit, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark.ORCID 0000-0003-1508-6866
Sebastian Camillo HolstNeurobiology Research Unit, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark.ORCID 0000-0003-3657-4535
Copenhagen University Hospital · DKUniversity of Copenhagen · DKUniversity of Zurich · CH

Funding

Para-Vascular Basis of Small Vessel DiseaseR01NS100366 · NINDS · UNIVERSITY OF ROCHESTER · PI NEDERGAARD, MAIKEN · 2016 to 2020
$3.8M
Age and AD related bottlenecks in glymphatic-lymphatic waste transportRF1AG057575 · NIA · UNIVERSITY OF ROCHESTER · PI NEDERGAARD, MAIKEN · 2017 to 2017
$3.2M
Capillary hyperemia in white matter: Novel mechanistic insight and effect of hypertension and agingRF1NS110049 · NINDS · UNIVERSITY OF ROCHESTER · PI NEDERGAARD, MAIKEN, WAN, JIANDI · 2018 to 2018
$2.9M
NIA NIH HHS RF1 AG057575NINDS NIH HHS R01 NS100366NINDS NIH HHS RF1 NS110049
6 · The paper itself

Abstract

Cerebrospinal fluid (CSF) flow through the brain parenchyma is facilitated by the astrocytic water channel aquaporin 4 (AQP4). Homeostatically regulated electroencephalographic (EEG) slow waves are a hallmark of deep non-rapid eye movement (NREM) sleep and have been implicated in the regulation of parenchymal CSF flow and brain clearance. The human AQP4 gene harbors several single nucleotide polymorphisms (SNPs) associated with AQP4 expression, brain-water homeostasis, and neurodegenerative diseases. To date, their role in sleep-wake regulation is unknown. To investigate whether functional variants in AQP4 modulate human sleep, nocturnal EEG recordings and cognitive performance were investigated in 123 healthy participants genotyped for a common eight-SNP AQP4-haplotype. We show that this AQP4-haplotype is associated with distinct modulations of NREM slow wave energy, strongest in early sleep and mirrored by changes in sleepiness and reaction times during extended wakefulness. The study provides the first human evidence for a link between AQP4, deep NREM sleep, and cognitive consequences of prolonged wakefulness.

Indexed as

Aquaporin 4ElectroencephalographyHaplotypesHealthy VolunteersHomeostasisHumansSleep, Slow-WaveWakefulnessAQP4 protein, humanAquaporin 4

Identifiers

PMID32369477
PMCPMC7199924
OpenAlexW3023217141

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.