Evidence map›Paper›PMID 30198873›Full record

ArticleJournal of Alzheimer's disease : JAD2018

Aβ42/Aβ40 and Aβ42/Aβ38 Ratios Are Associated with Measures of Gait Variability and Activities of Daily Living in Mild Alzheimer's Disease: A Pilot Study.

Ivan Koychev, Brook Galna, Henrik Zetterberg, Jennifer Lawson, Giovanna Zamboni, Basil H Ridha, James B Rowe, Alan Thomas, Robert Howard, Paresh Malhotra and 3 more

Erratum issuedOpen access · hybridAbstract readMulticenter Study
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. An erratum has been issued. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
2.1field-weighted citation impact, top 12% 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

19 citing papers in PubMed, 30 citations in OpenAlex.

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  9. Slowing gait speed precedes cognitive decline by several years.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2022
    Article
  10. Review
  11. The Diagnostic Potential of Amyloidogenic Proteins.International journal of molecular sciences · 2021
    Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

13 authors at 9 institutions in 3 countries.

Ivan KoychevDepartment of Psychiatry, University of Oxford, UK.
Brook GalnaInstitute of Neuroscience / Institute for Ageing, Newcastle University, Newcastle, UK.
Henrik ZetterbergDepartment of Molecular Neuroscience, University College London Institute of Neurology, Queen Square, London, UK.
Jennifer LawsonDepartment of Psychiatry, University of Oxford, UK.
Giovanna ZamboniNuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK.
Basil H RidhaNIHR Biomedical Research Centre, University College London, UK.
James B RoweNeurosciences, University of Cambridge, UK and MRC Cognition and Brain Sciences Unit, Cambridge, UK.
Alan ThomasInstitute of Neuroscience / Institute for Ageing, Newcastle University, Newcastle, UK.
Robert HowardDepartment of Molecular Neuroscience, University College London; Institute of Neurology, Queen Square, London, UK.
Paresh MalhotraDivision of Brain Sciences, Imperial College London, UK.
Craig RitchieUniversity of Edinburgh, Edinburgh, UK.
Simon LovestoneDepartment of Psychiatry, University of Oxford, UK.
Lynn RochesterInstitute of Neuroscience / Institute for Ageing, Newcastle University, Newcastle, UK.
Newcastle Hospitals - Campus for Ageing and Vitality · GBUniversity of Oxford · GBImperial College London · GBMRC Cognition and Brain Sciences Unit · GBNational Hospital for Neurology and Neurosurgery · GBSahlgrenska University Hospital · SEUCL Biomedical Research Centre · GBUniversity of Edinburgh · GBUniversity of Modena and Reggio Emilia · IT

Funding

Medical Research Council MC_U105597119Medical Research Council MC_UU_00005/12Medical Research Council MR/L023784/1Medical Research Council MR/L023784/2Medical Research Council MR/N029941/1Wellcome TrustWellcome Trust 103838
6 · The paper itself

Abstract

Gait disturbances are some of the earliest changes in dementia and their monitoring presents an opportunity for early diagnosis. The exact relationship between gait and well-established biomarkers of Alzheimer's disease (AD) remains to be clarified. In this study we compared gait-related measures with cerebrospinal fluid (CSF) markers of AD pathology. We recruited seventeen participants with mild AD in a multi-site study and performed gait assessment as well as lumbar punctures to obtain CSF. CSF Aβ42/Aβ40 and Aβ42/Aβ38 correlated positively with measures of variability (step time and step length) in the clinic-based assessments. This was driven by a negative relationship between gait variability and Aβ40 and Aβ38 but not Aβ42.The amyloid ratios and gait variability measures were also associated with more severe functional impairment. We interpret these data as an indication that increasing amyloid production (i.e., increasing Aβ40 and Aβ38) is associated with diminishing cognitive-motor control of gait. These preliminary results suggest that the two amyloid ratios may be a marker of the earliest disturbances in the interplay between cognitive and motor control which characterize dementia.

Indexed as

Alzheimer DiseaseGait Disorders, NeurologicActivities of Daily LivingAgedAmyloid beta-PeptidesFemaleHumansMaleMiddle AgedPeptide FragmentsPilot ProjectsUnited KingdomAmyloid beta-Peptidesamyloid beta-protein (1-38)amyloid beta-protein (1-40)amyloid beta-protein (1-42)Peptide FragmentsAlzheimer’s diseaseamyloidbiomarkerscerebrospinal fluid proteinsgait

Identifiers

PMID30198873
PMCPMC6218125
OpenAlexW2890832197

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.