Evidence map›Paper›PMID 30623019›Full record

ArticleAlzheimer's & dementia (Amsterdam, Netherlands)2019

Development and validation of a salivary tau biomarker in Alzheimer's disease.

Heather Pekeles, Hamid Y Qureshi, Hemant K Paudel, Hyman M Schipper, Mervyn Gornistky, Howard Chertkow

Open access · goldAbstract read
In one paragraph

Article in Alzheimer's & dementia (Amsterdam, Netherlands), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed, 4 pooled it
4.5field-weighted citation impact, top 5% 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

44 citing papers in PubMed, 4 syntheses or guidelines pooled it, 79 citations in OpenAlex.

  1. 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
  2. Pooled it
  3. Salivary AβJournal of neurology · 2023
    Pooled it
  4. Pooled it
  5. Review
  6. Article
  7. Article
  8. An Update of Salivary Biomarkers for the Diagnosis of Alzheimer's Disease.International journal of molecular sciences · 2025
    Review
  9. Review
  10. New Research on Biomarkers in Alzheimer's Continuum.Reviews on recent clinical trials · 2025
    Review
  11. Overview of Alzheimer's Disease Neuroimaging Initiative and future clinical trials.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Review
  12. Article
  13. Alzheimer's Disease-Related Analytes Amyloid-β and Tau in Perilymph: Correlation With Patient Age and Cognitive Score.Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery · 2024
    Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Review
  19. Review
  20. Article
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

6 authors at 1 institution in 1 country.

Heather PekelesDepartments of Neurology and Neurosurgery and Dentistry, McGill University, Montreal, Québec, Canada.
Hamid Y QureshiLady Davis Institute, Montreal, Québec, Canada.
Hemant K PaudelDepartments of Neurology and Neurosurgery and Dentistry, McGill University, Montreal, Québec, Canada.
Hyman M SchipperDepartments of Neurology and Neurosurgery and Dentistry, McGill University, Montreal, Québec, Canada.
Mervyn GornistkyDepartments of Neurology and Neurosurgery and Dentistry, McGill University, Montreal, Québec, Canada.
Howard ChertkowDepartments of Neurology and Neurosurgery and Dentistry, McGill University, Montreal, Québec, Canada.
Jewish General Hospital · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionTotal tau (t-tau) and phosphorylated tau (p-tau) are abnormally elevated in the brain and cerebrospinal fluid of individuals with Alzheimer's disease (AD). Tau is also present in the salivary gland tissue and saliva, and salivary measures might produce an accurate, accessible, and inexpensive biomarker.

methodsUsing unstimulated saliva and Western blot analysis, we quantified the p-tau/t-tau ratio at different phosphorylation sites.

resultsWe found that for one phosphorylation site, S396, p-tau/t-tau ratio was significantly elevated in patients with AD compared with normal elderly control subjects. The elevation in saliva, however, did not correlate with cerebrospinal fluid tau or with brain measures such as hippocampal volume. DISCUSSION: There is significant elevation of p-tau/t-tau ratio for the S396 phosphorylation site. Large variation in the AD salivary tau levels, however, limits the utility of this test as a clinical biomarker.

Indexed as

AlzheimerBiomarkersFTDPhosphorylationTau protein

Identifiers

PMID30623019
PMCPMC6317325
OpenAlexW2800659064

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.