Evidence map›Paper›PMID 29154275›Full record

ArticleJournal of Alzheimer's disease : JAD2018

Association of Cerebrospinal Fluid (CSF) Insulin with Cognitive Performance and CSF Biomarkers of Alzheimer's Disease.

Stefan L C Geijselaers, Pauline Aalten, Inez H G B Ramakers, Peter Paul De Deyn, Annemieke C Heijboer, Huiberdina L Koek, Marcel G M OldeRikkert, Janne M Papma, Fransje E Reesink, Lieke L Smits and 6 more

Open access · bronzeAbstract read
In one paragraph

Article in Journal of Alzheimer's disease : JAD, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 pooled it
1.6field-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

26 citing papers in PubMed, 1 synthesis or guideline pooled it, 47 citations in OpenAlex.

  1. Pooled it
  2. Insulin-mediated ciliary remodeling in the choroid plexus epithelium.Cellular and molecular life sciences : CMLS · 2026
    Article
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  5. Article
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  8. Article
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  12. Insulin resistance, cognition, and Alzheimer disease.Obesity (Silver Spring, Md.) · 2023
    Review
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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

16 authors at 6 institutions in 2 countries.

Stefan L C GeijselaersDepartments of Neurology and Geriatrics Brain Centre Rudolf Magnus, University Medical Centre Utrecht, Utrecht, the Netherlands.
Pauline AaltenAlzheimer Centre Limburg, School for Mental Health and Neuroscience (MHeNS), Maastricht University Medical Centre +, Maastricht, the Netherlands.
Inez H G B RamakersAlzheimer Centre Limburg, School for Mental Health and Neuroscience (MHeNS), Maastricht University Medical Centre +, Maastricht, the Netherlands.
Peter Paul De DeynDepartment of Neurology and Alzheimer Research Centre, University of Groningen, University Medical Centre Groningen, Groningen, the Netherlands.
Annemieke C HeijboerDepartment of Clinical Chemistry, Endocrine Laboratory, VU University Medical Centre, Amsterdam, the Netherlands.
Huiberdina L KoekDepartments of Neurology and Geriatrics Brain Centre Rudolf Magnus, University Medical Centre Utrecht, Utrecht, the Netherlands.
Marcel G M OldeRikkertRadboudumc Alzheimer Centre, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Centre, Nijmegen, the Netherlands.
Janne M PapmaDepartments of Neurology and Radiology, Erasmus University Medical Centre, Rotterdam, the Netherlands.
Fransje E ReesinkDepartment of Neurology and Alzheimer Research Centre, University of Groningen, University Medical Centre Groningen, Groningen, the Netherlands.
Lieke L SmitsAlzheimer Centre Amsterdam, VU University Medical Centre, Amsterdam, the Netherlands.
Coen D A StehouwerDepartment of Internal Medicine and Cardiovascular Research Institute, Maastricht University Medical Centre +, Maastricht, the Netherlands.
Charlotte E TeunissenDepartment of Clinical Chemistry, Neurochemistry Laboratory and Biobank, VU University Medical Centre, Amsterdam, the Netherlands.
Frans R J VerheyAlzheimer Centre Limburg, School for Mental Health and Neuroscience (MHeNS), Maastricht University Medical Centre +, Maastricht, the Netherlands.
Wiesje M van der FlierAlzheimer Centre Amsterdam, VU University Medical Centre, Amsterdam, the Netherlands.
Geert Jan BiesselsDepartment of Internal Medicine and Cardiovascular Research Institute, Maastricht University Medical Centre +, Maastricht, the Netherlands.
Parelsnoer Institute Neurodegenerative Diseases study group
Maastricht University Medical Centre · NLUniversity Medical Center Groningen · NLAmsterdam UMC Location Vrije Universiteit Amsterdam · NLGTx (United States) · USRadboud University Nijmegen · NLUniversity Medical Center Utrecht · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAbnormal insulin signaling in the brain has been linked to Alzheimer's disease (AD).

objectiveTo evaluate whether cerebrospinal fluid (CSF) insulin levels are associated with cognitive performance and CSF amyloid-β and Tau. Additionally, we explore whether any such association differs by sex or APOE ɛ4 genotype.

methodsFrom 258 individuals participating in the Parelsnoer Institute Neurodegenerative Diseases, a nationwide multicenter memory clinic population, we selected 138 individuals (mean age 66±9 years, 65.2% male) diagnosed with subjective cognitive impairment (n = 45), amnestic mild cognitive impairment (n = 44), or AD (n = 49), who completed a neuropsychological assessment, including tests of global cognition and memory performance, and who underwent lumbar puncture. We measured CSF levels of insulin, amyloid-β1-42, total (t-)Tau, and phosphorylated (p-)Tau.

resultsCSF insulin levels did not differ between the diagnostic groups (p = 0.136). Across the whole study population, CSF insulin was unrelated to cognitive performance and CSF biomarkers of AD, after adjustment for age, sex, body mass index, diabetes status, and clinic site (all p≥0.131). Importantly, however, we observed effect modification by sex and APOE ɛ4 genotype. Specifically, among women, higher insulin levels in the CSF were associated with worse global cognition (standardized regression coefficient -0.483; p = 0.008) and higher p-Tau levels (0.353; p = 0.040). Among non-carriers of the APOE ɛ4 allele, higher CSF insulin was associated with higher t-Tau (0.287; p = 0.008) and p-Tau (0.246; p = 0.029).

conclusionOur findings provide further evidence for a relationship between brain insulin signaling and AD pathology. It also highlights the need to consider sex and APOE ɛ4 genotype when assessing the role of insulin.

Indexed as

AgedAlzheimer DiseaseAmyloid beta-PeptidesApolipoprotein E4BrainCognition DisordersFemaleHumansInsulinMaleMental Status ScheduleMiddle AgedNeuropsychological TestsPeptide FragmentsSignal Transductiontau ProteinsAmyloid beta-Peptidesamyloid beta-protein (1-42)Apolipoprotein E4InsulinPeptide Fragmentstau ProteinsAlzheimer’s diseasecerebrospinal fluidcognitionepidemiologyinsulin

Identifiers

PMID29154275
PMCPMC5734123
OpenAlexW2769763026

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.