Evidence map›Paper›PMID 34129723›Full record

ArticleAnnals of clinical and translational neurology2021

Multi-cohort profiling reveals elevated CSF levels of brain-enriched proteins in Alzheimer's disease.

Sofia Bergström, Julia Remnestål, Jamil Yousef, Jennie Olofsson, Ioanna Markaki, Stephanie Carvalho, Jean-Christophe Corvol, Kim Kultima, Lena Kilander, Malin Löwenmark and 11 more

Open access · goldAbstract read
In one paragraph

Article in Annals of clinical and translational neurology, 2021. 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
4.0field-weighted citation impact, top 5% 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, 53 citations in OpenAlex.

  1. Article
  2. Article
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  4. Ratios of CSF proteins reflect cognitive function in ALS.Alzheimer's research & therapy · 2026
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  8. 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
    Review
  9. Article
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  11. Article
  12. Recent Advances in Human Cerebrospinal Fluid Proteomics.Methods in molecular biology (Clifton, N.J.) · 2025
    Article
  13. Article
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  15. Article
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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

21 authors at 8 institutions in 5 countries.

Sofia BergströmDivision of Affinity Proteomics, Department of Protein Science, SciLifeLab, KTH Royal Institute of Technology, Stockholm, Sweden.ORCID 0000-0003-2910-4754
Julia RemnestålDivision of Affinity Proteomics, Department of Protein Science, SciLifeLab, KTH Royal Institute of Technology, Stockholm, Sweden.ORCID 0000-0002-3908-6476
Jamil YousefDivision of Affinity Proteomics, Department of Protein Science, SciLifeLab, KTH Royal Institute of Technology, Stockholm, Sweden.ORCID 0000-0001-5915-1258
Jennie OlofssonDivision of Affinity Proteomics, Department of Protein Science, SciLifeLab, KTH Royal Institute of Technology, Stockholm, Sweden.ORCID 0000-0002-8593-9089
Ioanna MarkakiDepartment of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden.ORCID 0000-0003-3328-5746
Stephanie CarvalhoSorbonne Université, Institut du Cerveau - Paris Brain Institute - ICM, Assistance-Publique Hôpitaux de Paris, INSERM, CNRS, Hôpital Pitié-Salpêtrière, Department of Neurology, Centre d'Investigation Clinique Neurosciences, Paris, France.
Jean-Christophe CorvolSorbonne Université, Institut du Cerveau - Paris Brain Institute - ICM, Assistance-Publique Hôpitaux de Paris, INSERM, CNRS, Hôpital Pitié-Salpêtrière, Department of Neurology, Centre d'Investigation Clinique Neurosciences, Paris, France.ORCID 0000-0001-7325-0199
Kim KultimaDepartment of Medical Sciences, Clinical Chemistry, Uppsala University, Uppsala, Sweden.ORCID 0000-0002-0680-1410
Lena KilanderDepartment of Public Health and Caring Sciences, Geriatrics, Uppsala University, Uppsala, Sweden.
Malin LöwenmarkDepartment of Public Health and Caring Sciences, Geriatrics, Uppsala University, Uppsala, Sweden.
Martin IngelssonDepartment of Public Health and Caring Sciences, Geriatrics, Uppsala University, Uppsala, Sweden.ORCID 0000-0001-5466-8370
Kaj BlennowDepartment of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg.ORCID 0000-0002-1890-4193
Henrik ZetterbergDepartment of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg.ORCID 0000-0003-3930-4354
Bengt NellgårdAnesthesiology and Intensive Care Medicine, Sahlgrenska University Hospital, Mölndal, Sweden.ORCID 0000-0001-6791-8893
Frederic BrosseronUniversitätsklinikum Bonn, Germany.ORCID 0000-0003-3137-7516
Michael T HenekaUniversitätsklinikum Bonn, Germany.ORCID 0000-0003-4996-1630
Beatriz BoschAlzheimer's and other cognitive disorders Unit. Service of Neurology, Hospital Clínic de Barcelona, Institut d'Investigació Biomèdica August Pi i Sunyer, University of Barcelona, Barcelona, Spain.ORCID 0000-0002-6094-0024
Raquel Sanchez-ValleAlzheimer's and other cognitive disorders Unit. Service of Neurology, Hospital Clínic de Barcelona, Institut d'Investigació Biomèdica August Pi i Sunyer, University of Barcelona, Barcelona, Spain.ORCID 0000-0001-7750-896X
Anna MånbergDivision of Affinity Proteomics, Department of Protein Science, SciLifeLab, KTH Royal Institute of Technology, Stockholm, Sweden.ORCID 0000-0002-0056-1313
Per SvenningssonDepartment of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden.ORCID 0000-0001-6727-3802
Peter NilssonDivision of Affinity Proteomics, Department of Protein Science, SciLifeLab, KTH Royal Institute of Technology, Stockholm, Sweden.ORCID 0000-0002-4657-8532
Science for Life Laboratory · SEUppsala University · SESahlgrenska University Hospital · SECentre National de la Recherche Scientifique · FRKarolinska Institutet · SEUniversity Hospital Bonn · DEBarcelona Centre for International Affairs · ESHospital Clínic de Barcelona · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveDecreased amyloid beta (Aβ) 42 together with increased tau and phospho-tau in cerebrospinal fluid (CSF) is indicative of Alzheimer's disease (AD). However, the molecular pathophysiology underlying the slowly progressive cognitive decline observed in AD is not fully understood and it is not known what other CSF biomarkers may be altered in early disease stages.

methodsWe utilized an antibody-based suspension bead array to analyze levels of 216 proteins in CSF from AD patients, patients with mild cognitive impairment (MCI), and controls from two independent cohorts collected within the AETIONOMY consortium. Two additional cohorts from Sweden were used for biological verification.

resultsSix proteins, amphiphysin (AMPH), aquaporin 4 (AQP4), cAMP-regulated phosphoprotein 21 (ARPP21), growth-associated protein 43 (GAP43), neurofilament medium polypeptide (NEFM), and synuclein beta (SNCB) were found at increased levels in CSF from AD patients compared with controls. Next, we used CSF levels of Aβ42 and tau for the stratification of the MCI patients and observed increased levels of AMPH, AQP4, ARPP21, GAP43, and SNCB in the MCI subgroups with abnormal tau levels compared with controls. Further characterization revealed strong to moderate correlations between these five proteins and tau concentrations.

interpretationIn conclusion, we report six extensively replicated candidate biomarkers with the potential to reflect disease development. Continued evaluation of these proteins will determine to what extent they can aid in the discrimination of MCI patients with and without an underlying AD etiology, and if they have the potential to contribute to a better understanding of the AD continuum.

Indexed as

AdultAgedAged, 80 and overAlzheimer DiseaseAmyloid beta-PeptidesAquaporin 4beta-SynucleinBiomarkersBrainCognitive DysfunctionCohort StudiesCross-Sectional StudiesFemaleGAP-43 ProteinHumansMaleamphiphysinAmyloid beta-Peptidesamyloid beta-protein (1-42)AQP4 protein, humanAquaporin 4beta-SynucleinBiomarkerscyclic AMP-regulated phosphoprotein ARPP-21GAP-43 ProteinMAPT protein, humanNerve Tissue Proteinsneurofilament protein MNeurofilament ProteinsPeptide FragmentsPhosphoproteinsSNCB protein, humantau Proteins

Identifiers

PMID34129723
PMCPMC8283172
OpenAlexW3169262671

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.