Evidence map›Paper›PMID 23937201›Full record

ArticleCurrent neurovascular research2013

Platelet-derived secreted amyloid-precursor protein-β as a marker for diagnosing Alzheimer's disease.

Josef Marksteiner, Christian Humpel

Abstract readValidation Study
In one paragraph

Article in Current neurovascular research, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
0.7field-weighted citation impact, top 27% 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

13 citing papers in PubMed, 25 citations in OpenAlex.

  1. Platelets mirror changes in the frontal lobe antioxidant system in Alzheimer's disease.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Article
  2. Review
  3. Review
  4. Article
  5. Review
  6. Review
  7. Amyloid Beta Peptide (AβJournal of clinical medicine · 2020
    Article
  8. Article
  9. Article
  10. Plasma levels of soluble amyloid precursor protein β in symptomatic Alzheimer's disease.European archives of psychiatry and clinical neuroscience · 2018
    Article
  11. Article
  12. Article
  13. Review
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

2 authors at 1 institution in 1 country.

Josef MarksteinerDepartment of Psychiatry and Psychotherapy, Anichstr. 35, A-6020 Innsbruck, Austria. christian.humpel@i-med.ac.at.
Christian Humpel
Innsbruck Medical University · AT

Funding

Austrian Science Fund FWF P 24734
6 · The paper itself

Abstract

A marker of Alzheimer's disease (AD) with a high sensitivity and specificity would facilitate a diagnosis at early stages. Blood platelets may be of particular interest in search of biomarkers, because they express amyloid-precursor protein (APP), and display a dysfunctional processing in AD. The aim of the present study is to establish and validate an assay for secreted amyloid-precursor protein (sAPP)-α and -β in platelets of AD and mild cognitively impaired (MCI) subjects, compared to healthy young and old controls. Freshly isolated platelet extracts (25 µg) were incubated with or without recombinant BACE1 (beta-site APP-Cleaving Enzyme; β-secretase, 8U) at 37°C and low pH and the levels of sAPP-α and sAPP-b were measured by specific ELISAs. Our data show that sAPP-α levels were not different between AD, MCI and control subjects. However, sAPP-β levels in MCI and AD were significantly elevated relative to controls. When recombinant BACE1 was added, no changes were seen in sAPP-α levels, but the processed sAPP-β levels were again markedly increased. The sAPP-β processing was specific and selective after 2.5 hours at 37°C, and was possibly mediated by exogenous BACE1, because it was blocked by a BACE1 inhibitor and BACE1 enzyme levels were enhanced in AD patients. Our data reveal that quantitive analysis of platelet sAPP-β assay by ELISA may be a novel diagnostic biomarker for MCI and AD.

Indexed as

AgedAlzheimer DiseaseAmyloid beta-Protein PrecursorBiomarkersBlood PlateletsBlotting, WesternCognitive DysfunctionEnzyme-Linked Immunosorbent AssayFemaleHumansMaleMiddle AgedAmyloid beta-Protein PrecursorBiomarkers

Identifiers

PMID23937201
PMCPMC4311378
OpenAlexW2333431711

What OpenQuestion holds

Textmetadata
LicenceTDM
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.