Evidence map›Paper›PMID 29164798›Full record

Trial reportHuman brain mapping2018

Regionally specific changes in the hippocampal circuitry accompany progression of cerebrospinal fluid biomarkers in preclinical Alzheimer's disease.

Christine L Tardif, Gabriel A Devenyi, Robert S C Amaral, Sandra Pelleieux, Judes Poirier, Pedro Rosa-Neto, John Breitner, M Mallar Chakravarty, PREVENT-AD Research Group

Open access · bronzeAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Human brain mapping, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
2.8field-weighted citation impact, top 9% 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

16 citing papers in PubMed, 39 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. The PREVENT-AD cohort: Accelerating Alzheimer's disease research and treatment in Canada and beyond.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Article
  5. Article
  6. Article
  7. Medial Temporal Lobe Networks in Alzheimer's Disease: Structural and Molecular Vulnerabilities.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2022
    Article
  8. Article
  9. Article
  10. Article
  11. Contribution of mixed pathology to medial temporal lobe atrophy in Alzheimer's disease.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2020
    Article
  12. An update on magnetic resonance imaging markers in AD.Therapeutic advances in neurological disorders · 2020
    Review
  13. Observational
  14. Unsuspected Involvement of Spinal Cord in Alzheimer Disease.Frontiers in cellular neuroscience · 2020
    Article
  15. Article
  16. 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

9 authors at 2 institutions in 3 countries.

Christine L TardifCerebral Imaging Centre, Douglas Mental Health University Institute, Verdun, Quebec, Canada.ORCID 0000-0001-8356-6808
Gabriel A DevenyiCerebral Imaging Centre, Douglas Mental Health University Institute, Verdun, Quebec, Canada.
Robert S C AmaralCerebral Imaging Centre, Douglas Mental Health University Institute, Verdun, Quebec, Canada.
Sandra PelleieuxCentre for the Studies on the Prevention of AD, Douglas Mental Health University Institute, Verdun, Quebec, Canada.
Judes PoirierCentre for the Studies on the Prevention of AD, Douglas Mental Health University Institute, Verdun, Quebec, Canada.
Pedro Rosa-NetoMontreal Neurological Institute, Montreal, Quebec, Canada.
John Breitner
M Mallar ChakravartyCerebral Imaging Centre, Douglas Mental Health University Institute, Verdun, Quebec, Canada.ORCID 0000-0002-0759-5508
PREVENT-AD Research Group
Douglas Mental Health University Institute · CAMontreal Neurological Institute and Hospital · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Neuropathological and in vivo brain imaging studies agree that the cornu ammonis 1 and subiculum subfields of the hippocampus are most vulnerable to atrophy in the prodromal phases of Alzheimer's disease (AD). However, there has been limited investigation of the structural integrity of the components of the hippocampal circuit, including subfields and extra-hippocampal white matter structure, in relation to the progression of well-accepted cerebrospinal fluid (CSF) biomarkers of AD, amyloid-β 1-42 (Aβ) and total-tau (tau). We investigated these relationships in 88 aging asymptomatic individuals with a parental or multiple-sibling familial history of AD. Apolipoprotein (APOE) ɛ4 risk allele carriers were identified, and all participants underwent cognitive testing, structural magnetic resonance imaging, and lumbar puncture for CSF assays of tau, phosphorylated-tau (p-tau) and Aβ. Individuals with a reduction in CSF Aβ levels (an indicator of amyloid accretion into neuritic plaques) as well as evident tau pathology (believed to be linked to neurodegeneration) exhibited lower subiculum volume, lower fornix microstructural integrity, and a trend towards lower cognitive score than individuals who showed only reduction in CSF Aβ. In contrast, persons with normal levels of tau showed an increase in structural MR markers in relation to declining levels of CSF Aβ. These results suggest that hippocampal subfield volume and extra-hippocampal white matter microstructure demonstrate a complex pattern where an initial volume increase is followed by decline among asymptomatic individuals who, in some instances, may be a decade or more away from onset of cognitive or functional impairment.

Indexed as

AgedAlzheimer DiseaseAmyloid beta-PeptidesApolipoprotein E4BiomarkersFemaleGenetic Predisposition to DiseaseHippocampusHumansMagnetic Resonance ImagingMaleMiddle AgedNeural PathwaysProdromal Symptomstau ProteinsWhite MatterAmyloid beta-PeptidesApolipoprotein E4BiomarkersMAPT protein, humantau ProteinsAlzheimer's diseaseamyloid-βAPOE ɛ4cerebrospinal fluid biomarkersfimbriafornixhippocampal subfieldspreclinicalstructural magnetic resonance imagingtau

Identifiers

PMID29164798
PMCPMC6866392
OpenAlexW2769121534

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.