Evidence map›Paper›PMID 32303272›Full record

ArticleAlzheimer's research & therapy2020

Sex-specific associations with cerebrospinal fluid biomarkers in dementia with Lewy bodies.

M van de Beek, R Babapour Mofrad, I van Steenoven, H Vanderstichele, P Scheltens, C E Teunissen, A W Lemstra, W M van der Flier

Open 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. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
5.0field-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

22 citing papers in PubMed, 1 synthesis or guideline pooled it, 40 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Article
  5. Article
  6. Sex and gender differences in cognitive resilience to aging and Alzheimer's disease.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2024
    Review
  7. Article
  8. Article
  9. Sex differences in brain atrophy in dementia with Lewy bodies.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2024
    Article
  10. Article
  11. Article
  12. The Mediating Role of Inflammation in the Relationship Between α-Synuclein and Cognitive Functioning.The journals of gerontology. Series A, Biological sciences and medical sciences · 2023
    Article
  13. Review
  14. Review
  15. Article
  16. Article
  17. The temporal onset of the core features in dementia with Lewy bodies.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2022
    Article
  18. From Menopause to Neurodegeneration-Molecular Basis and Potential Therapy.International journal of molecular sciences · 2021
    Review
  19. Sex differences for phenotype in pathologically defined dementia with Lewy bodies.Journal of neurology, neurosurgery, and psychiatry · 2021
    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

8 authors at 3 institutions in 1 country.

M van de BeekAlzheimer Center Amsterdam & Department of Neurology, Neuroscience Campus Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, VU University Medical Center, Amsterdam, The Netherlands. m.vandebeek2@amsterdamumc.nl.
R Babapour MofradAlzheimer Center Amsterdam & Department of Neurology, Neuroscience Campus Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, VU University Medical Center, Amsterdam, The Netherlands.
I van SteenovenAlzheimer Center Amsterdam & Department of Neurology, Neuroscience Campus Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, VU University Medical Center, Amsterdam, The Netherlands.
H VandersticheleBiomarkable bvba, Ghent, Belgium.
P ScheltensAlzheimer Center Amsterdam & Department of Neurology, Neuroscience Campus Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, VU University Medical Center, Amsterdam, The Netherlands.
C E TeunissenNeurochemistry Laboratory and Biobank, Department of Clinical Chemistry, Amsterdam Neuroscience, Amsterdam UMC, VU University Medical Center, Amsterdam, The Netherlands.
A W LemstraAlzheimer Center Amsterdam & Department of Neurology, Neuroscience Campus Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, VU University Medical Center, Amsterdam, The Netherlands.
W M van der FlierAlzheimer Center Amsterdam & Department of Neurology, Neuroscience Campus Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC, VU University Medical Center, Amsterdam, The Netherlands.
Amsterdam Neuroscience · NLAmsterdam University Medical Centers · NLVrije Universiteit Amsterdam · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDementia with Lewy bodies (DLB) is more prevalent in men than in women. In addition, post-mortem studies found sex differences in underlying pathology. It remains unclear whether these differences are also present antemortem in in vivo biomarkers, and whether sex differences translate to variability in clinical manifestation. The objective of this study was to evaluate sex differences in cerebrospinal fluid (CSF) biomarker concentrations (i.e., alpha-synuclein (α-syn), amyloid β1-42 (Aβ42), total tau (Tau), phosphorylated tau at threonine 181 (pTau)) and clinical characteristics in DLB.

methodsWe included 223 DLB patients from the Amsterdam Dementia Cohort, of which 39 were women (17%, age 70 ± 6, MMSE 21 ± 6) and 184 men (83%, age 68 ± 7, MMSE 23 ± 4). Sex differences in CSF biomarker concentrations (i.e., α-syn, Aβ42, Tau, and pTau) were evaluated using age-corrected general linear models (GLM). In addition, we analyzed sex differences in core clinical features (i.e., visual hallucinations, parkinsonism, cognitive fluctuations, and REM sleep behavior disorder (RBD) and cognitive test scores using age- and education-adjusted GLM.

resultsWomen had lower CSF α-syn levels (F 1429 ± 164 vs M 1831 ± 60, p = 0.02) and CSF Aβ42 levels (F 712 ± 39 vs M 821 ± 18, p = 0.01) compared to men. There were no sex differences for (p) Tau concentrations (p > 0.05). Clinically, women were older, had a shorter duration of complaints (F 2 ± 1 vs M 4 ± 3, p < 0.001), more frequent hallucinations (58% vs 38%, p = 0.02), and scored lower on MMSE and a fluency task (MMSE, p = 0.02; animal fluency, p = 0.006). Men and women did not differ on fluctuations, RBD, parkinsonism, or other cognitive tests.

conclusionsWomen had lower Aβ42 and α-syn levels than men, alongside a shorter duration of complaints. Moreover, at the time of diagnosis, women had lower cognitive test scores and more frequent hallucinations. Based on our findings, one could hypothesize that women have a more aggressive disease course in DLB compared to men. Future research should investigate whether women and men with DLB might benefit from sex-specific treatment strategies.

Indexed as

Alzheimer DiseaseBiomarkersLewy Body DiseaseAgedAmyloid beta-PeptidesFemaleHumansMaleMiddle AgedPeptide FragmentsSex Factorstau ProteinsAmyloid beta-PeptidesBiomarkersPeptide Fragmentstau ProteinsCerebrospinal fluid biomarkersDementia with Lewy bodiesSex differences

Identifiers

PMID32303272
PMCPMC7165383
OpenAlexW3016922954

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.