Evidence map›Paper›PMID 22527776›Full record

ArticleJournal of neural transmission (Vienna, Austria : 1996)2012

Cerebrospinal fluid amyloid-β 2-42 is decreased in Alzheimer's, but not in frontotemporal dementia.

Mirko Bibl, Marion Gallus, Volker Welge, Hermann Esselmann, Stefanie Wolf, Eckart Rüther, Jens Wiltfang

Erratum issuedOpen access · hybridAbstract read
In one paragraph

Article in Journal of neural transmission (Vienna, Austria : 1996), 2012. 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 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
3.9field-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

18 citing papers in PubMed, 54 citations in OpenAlex.

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  17. Truncated and modified amyloid-beta species.Alzheimer's research & therapy · 2014
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 5 institutions in 1 country.

Mirko BiblDepartment of Psychiatry, University of Goettingen, von-Siebold-Str. 5, 37075, Goettingen, Germany. m.bibl@kliniken-essen-mitte.de
Marion Gallus
Volker Welge
Hermann Esselmann
Stefanie Wolf
Eckart Rüther
Jens Wiltfang
University of Duisburg-Essen · DEAlb Fils Kliniken · DEKliniken Essen-Mitte · DELudwig-Maximilians-Universität München · DEUniversity of Göttingen · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Alzheimer's dementia (AD) and frontotemporal dementias (FTD) are common and their clinical differential diagnosis may be complicated by overlapping symptoms, which is why biomarkers may have an important role to play. Cerebrospinal fluids (CSF) Aβ2-42 and 1-42 have been shown to be similarly decreased in AD, but 1-42 did not display sufficient specificity for exclusion of other dementias from AD. The objective of the present study was to clarify the diagnostic value of Aβ2-42 peptides for the differential diagnosis of AD from FTD. For this purpose, 20 non-demented disease controls (NDC), 22 patients with AD and 17 with FTD were comparatively analysed by a novel sequential aminoterminally and carboxyterminally specific immunoprecipitation protocol with subsequent Aβ-SDS-PAGE/immunoblot, allowing the quantification of peptides 1-38(ox), 2-40 and 2-42 along with Aβ 1-37, 1-38, 1-39, 1-40, 1-40(ox) and 1-42. CSF Aβ1-42 was decreased in AD as compared to NDC, but not to FTD. In a subgroup of the patients analyzed, the decrease of Abeta2-42 in AD was evident as compared to both NDC and FTD. Aβ1-38 was decreased in FTD as compared to NDC and AD. For differentiating AD from FTD, Aβ1-42 demonstrated sufficient diagnostic accuracies only when combined with Aβ1-38. Aβ2-42 yielded diagnostic accuracies of over 85 % as a single marker. These accuracy figures could be improved by combining Aβ2-42 to Aβ1-38. Aβ2-42 seems to be a promising biomarker for differentiating AD from other degenerative dementias, such as FTD.

Indexed as

AgedAged, 80 and overAlzheimer DiseaseAmyloid beta-PeptidesBiomarkersDepressive DisorderDiagnosis, DifferentialFemaleFrontotemporal DementiaHumansMaleMiddle AgedPeptide FragmentsAmyloid beta-Peptidesamyloid beta-protein (2-42)BiomarkersPeptide Fragments

Identifiers

PMID22527776
PMCPMC3605494
OpenAlexW2035440474

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.