Evidence map›Paper›PMID 21329517›Full record

ArticleAlzheimer's research & therapy2011

Non-linear relationships of cerebrospinal fluid biomarker levels with cognitive function: an observational study.

Jonathan H Williams, Gordon K Wilcock, Jeffrey Seeburger, Aimee Dallob, Omar Laterza, William Potter, A David Smith

Open access · goldAbstract read
In one paragraph

Article in Alzheimer's research & therapy, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
0.9field-weighted citation impact, top 26% 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

15 citing papers in PubMed, 25 citations in OpenAlex.

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  14. Amyloid-β peptide: Dr. Jekyll or Mr. Hyde?Journal of Alzheimer's disease : JAD · 2013
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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

7 authors at 2 institutions in 2 countries.

Jonathan H WilliamsOPTIMA, University of Oxford, John Radcliffe Hospital, Headington, Oxford, OX3 9DU, UK. drjhw@live.co.uk.
Gordon K Wilcock
Jeffrey Seeburger
Aimee Dallob
Omar Laterza
William Potter
A David Smith
Merck & Co., Inc., Rahway, NJ, USA (United States) · USUniversity of Oxford · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionLevels of cerebrospinal fluid (CSF) β-amyloid (Aβ) and Tau proteins change in Alzheimer's disease (AD). We tested if the relationships of these biomarkers with cognitive impairment are linear or non-linear.

methodsWe assessed cognitive function and assayed CSF Aβ and Tau biomarkers in 95 non-demented volunteers and 97 AD patients. We then tested non-linearities in their inter-relations.

resultsCSF biomarkers related to cognitive function in the non-demented range of cognition, but these relations were weak or absent in the patient range; Aβ1-40's relationship was biphasic.

conclusionsMajor biomarker changes precede clinical AD and index cognitive impairment in AD poorly, if at all.

Identifiers

PMID21329517
PMCPMC3109414
OpenAlexW2110225477

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.