Evidence map›Paper›PMID 36115967›Full record

ArticleAlzheimer's research & therapy2022

Aquaporin-4 cerebrospinal fluid levels are higher in neurodegenerative dementia: looking at glymphatic system dysregulation.

Andrea Arighi, Marina Arcaro, Giorgio Giulio Fumagalli, Tiziana Carandini, Anna Margherita Pietroboni, Luca Sacchi, Chiara Fenoglio, Maria Serpente, Federica Sorrentino, Giovanni Isgrò and 3 more

Open access · goldAbstract read
In one paragraph

Article in Alzheimer's research & therapy, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
4.3field-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

28 citing papers in PubMed, 48 citations in OpenAlex.

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  9. Biomarkers of blood-brain barrier and neurovascular unit integrity in human cognitive impairment and dementia.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
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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

13 authors at 3 institutions in 2 countries.

Andrea ArighiFondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Neurodegenerative Disease Unit, via Francesco Sforza 35, 20122, Milan, Italy. andrea.arighi@policlinico.mi.it.
Marina ArcaroFondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Neurodegenerative Disease Unit, via Francesco Sforza 35, 20122, Milan, Italy.
Giorgio Giulio FumagalliFondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Neurodegenerative Disease Unit, via Francesco Sforza 35, 20122, Milan, Italy.
Tiziana CarandiniFondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Neurodegenerative Disease Unit, via Francesco Sforza 35, 20122, Milan, Italy.
Anna Margherita PietroboniFondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Neurodegenerative Disease Unit, via Francesco Sforza 35, 20122, Milan, Italy.
Luca SacchiFondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Neurodegenerative Disease Unit, via Francesco Sforza 35, 20122, Milan, Italy.
Chiara FenoglioUniversity of Milan, Milan, Italy.
Maria SerpenteFondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Neurodegenerative Disease Unit, via Francesco Sforza 35, 20122, Milan, Italy.
Federica SorrentinoUniversity of Milan, Milan, Italy.
Giovanni IsgròFondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Neurodegenerative Disease Unit, via Francesco Sforza 35, 20122, Milan, Italy.
Federico TurkheimerDepartment of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK.
Elio ScarpiniFondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Neurodegenerative Disease Unit, via Francesco Sforza 35, 20122, Milan, Italy.
Daniela GalimbertiFondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Neurodegenerative Disease Unit, via Francesco Sforza 35, 20122, Milan, Italy.
Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico · ITUniversity of Milan · ITKing's College London · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Aquaporin-4 (AQP4) is a channel protein that plays a fundamental role in glymphatic system, a newly described pathway for fluid exchange in the central nervous system, as well as a central figure in a fascinating new theory for the pathophysiology of neurodegenerative diseases such as Alzheimer's disease (AD) and frontotemporal dementia (FTD). In this study, cerebrospinal fluid (CSF) concentration of AQP4, amyloid-β, total tau and P-tau were determined in 103 CSF samples from patients affected by neurodegenerative dementias (AD and FTD) or psychiatric diseases and 21 controls. Significantly higher levels of AQP4 were found in AD and FTD patients compared to subjects not affected by neurodegenerative diseases, and a significant, positive correlation between AQP4 and total tau levels was found. This evidence may pave the way for future studies focused on the role of this channel protein in the clinical assessment of the glymphatic function and degree of neurodegeneration.

Indexed as

Alzheimer DiseaseAquaporin 4Frontotemporal DementiaGlymphatic SystemHumansNeurodegenerative Diseasestau ProteinsAQP4 protein, humanAquaporin 4tau ProteinsAlzheimer’s diseaseAmyloid-βAquaporin 4Cerebrospinal fluidFrontotemporal dementiaGlymphatic system

Identifiers

PMID36115967
PMCPMC9482276
OpenAlexW4296184727

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.