Evidence map›Paper›PMID 21047401›Full record

ArticleBMC neurology2010

Saliva levels of Abeta1-42 as potential biomarker of Alzheimer's disease: a pilot study.

Felix Bermejo-Pareja, Desiree Antequera, Teo Vargas, Jose A Molina, Eva Carro

Abstract read
In one paragraph

Article in BMC neurology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 88 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
88citing papers in PubMed, 6 pooled it
–field-weighted citation impact
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

88 citing papers in PubMed, 6 syntheses or guidelines pooled it.

  1. Pooled it
  2. Diagnostic performance of salivary markers of Alzheimer's disease: A systematic review.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Pooled it
  3. Pooled it
  4. Pooled it
  5. Salivary AβJournal of neurology · 2023
    Pooled it
  6. Pooled it
  7. Review
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. An Update of Salivary Biomarkers for the Diagnosis of Alzheimer's Disease.International journal of molecular sciences · 2025
    Review
  16. Article
  17. Article
  18. Review
  19. Article
  20. Article

28 more citing papers are in PubMed but not listed here.

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

5 authors.

Felix Bermejo-ParejaNeurology Service, Hospital 12 de Octubre, Madrid, Spain.
Desiree Antequera
Teo Vargas
Jose A Molina
Eva Carro

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSimple, non-invasive tests for early detection of degenerative dementia by use of biomarkers are urgently required. However, up to the present, no validated extracerebral diagnostic markers for the early diagnosis of Alzheimer disease (AD) are available. The clinical diagnosis of probable AD is made with around 90% accuracy using modern clinical, neuropsychological and imaging methods. A biochemical marker that would support the clinical diagnosis and distinguish AD from other causes of dementia would therefore be of great value as a screening test. A total of 126 samples were obtained from subjects with AD, and age-sex-matched controls. Additionally, 51 Parkinson's disease (PD) patients were used as an example of another neurodegenerative disorder. We analyzed saliva and plasma levels of β amyloid (Aβ) using a highly sensitive ELISA kit.

resultsWe found a small but statistically significant increase in saliva Aβ42 levels in mild AD patients. In addition, there were not differences in saliva concentration of Aβ42 between patients with PD and healthy controls. Saliva Aβ40 expression was unchanged within all the studied sample. The association between saliva Aβ42 levels and AD was independent of established risk factors, including age or Apo E, but was dependent on sex and functional capacity.

conclusionsWe suggest that saliva Aβ42 levels could be considered a potential peripheral marker of AD and help discrimination from other types of neurodegenerative disorders. We propose a new and promising biomarker for early AD.

Indexed as

AgedAged, 80 and overAge FactorsAlzheimer DiseaseAmyloid beta-PeptidesApolipoprotein E4BiomarkersBlotting, WesternEnzyme-Linked Immunosorbent AssayFemaleHumansMaleMiddle AgedPilot ProjectsSalivaAmyloid beta-PeptidesApolipoprotein E4Biomarkers

Identifiers

PMID21047401
PMCPMC2987856

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.