Evidence map›Paper›PMID 25319693›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2014

Resting-state functional connectivity changes in aging apoE4 and apoE-KO mice.

Valerio Zerbi, Maximilian Wiesmann, Tim L Emmerzaal, Diane Jansen, Maarten Van Beek, Martina P C Mutsaers, Christian F Beckmann, Arend Heerschap, Amanda J Kiliaan

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
54citing papers in PubMed, 1 pooled it
3.8field-weighted citation impact, top 6% 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

54 citing papers in PubMed, 1 synthesis or guideline pooled it, 79 citations in OpenAlex.

  1. Pooled it
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  13. Hippocampal functional connectivity across age in anFrontiers in aging neuroscience · 2022
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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

9 authors at 2 institutions in 2 countries.

Valerio ZerbiDepartments of Anatomy, Donders Institute for Brain Cognition and Behaviour, Radiology.
Maximilian WiesmannDepartments of Anatomy, Donders Institute for Brain Cognition and Behaviour, Geriatric Medicine, and.
Tim L EmmerzaalDepartments of Anatomy, Donders Institute for Brain Cognition and Behaviour.
Diane JansenDepartments of Anatomy, Donders Institute for Brain Cognition and Behaviour.
Maarten Van BeekDepartments of Anatomy, Donders Institute for Brain Cognition and Behaviour.
Martina P C MutsaersDepartments of Anatomy, Donders Institute for Brain Cognition and Behaviour.ORCID http://orcid.org/0000-0001-8196-2137
Christian F BeckmannDonders Centre for Cognitive Neuroimaging, Radboud university medical center, 6525 EZ Nijmegen, The Netherlands, and MIRA Institute for Biomedical Technology and Technical Medicine, University of Twente, 7500 AE Enschede, The Netherlands.
Arend HeerschapRadiology.
Amanda J KiliaanDepartments of Anatomy, Donders Institute for Brain Cognition and Behaviour, Amanda.Kiliaan@radboudumc.nl.
Allen Institute for Brain Science · USRadboud University Nijmegen · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

It is well established that the cholesterol-transporter apolipoprotein ε (APOE) genotype is associated with the risk of developing neurodegenerative diseases. Recently, brain functional connectivity (FC) in apoE-ε4 carriers has been investigated by means of resting-state fMRI, showing a marked differentiation in several functional networks at different ages compared with carriers of other apoE isoforms. The causes of such hampered FC are not understood. We hypothesize that vascular function and synaptic repair processes, which are both impaired in carriers of ε4, are the major contributors to the loss of FC during aging. To test this hypothesis, we integrated several different MRI techniques with immunohistochemistry and investigated FC changes in relation with perfusion, diffusion, and synaptic density in apoE4 and apoE-knock-out (KO) mice at 12 (adult) and 18 months of age. Compared with wild-type mice, we detected FC deficits in both adult and old apoE4 and apoE-KO mice. In apoE4 mice, these changes occurred concomitant with increased mean diffusivity in the hippocampus, whereas perfusion deficits appear only later in life, together with reduced postsynaptic density levels. Instead, in apoE-KO mice FC deficits were mirrored by strongly reduced brain perfusion since adulthood. In conclusion, we provide new evidence for a relation between apoE and brain connectivity, possibly mediated by vascular risk factors and by the efficiency of APOE as synaptic modulator in the brain. Our results show that multimodal MR neuroimaging is an excellent tool to assess brain function and to investigate early neuropathology and aging effects in translational research.

Indexed as

AgingAnimalsApolipoprotein E4Apolipoproteins EBrainCells, CulturedFemaleHumansMaleMiceMice, 129 StrainMice, Inbred C57BLMice, KnockoutMice, TransgenicNerve NetRestApolipoprotein E4Apolipoproteins EapoEapoE4 micecerebral blood flowdiffusion tensor imagingfunctional connectivityresting-state fMRI

Identifiers

PMID25319693
PMCPMC6705289
OpenAlexW2139367186

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.