Evidence map›Paper›PMID 29330839›Full record

ReviewMolecular neurobiology2018

Peripheral Blood Brain-Derived Neurotrophic Factor as a Biomarker of Alzheimer's Disease: Are There Methodological Biases?

Marta Balietti, Cinzia Giuli, Fiorenzo Conti

Open access · hybridAbstract readReview
In one paragraph

Review in Molecular neurobiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed, 1 pooled it
3.4field-weighted citation impact, top 7% 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

45 citing papers in PubMed, 1 synthesis or guideline pooled it, 76 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Plasma BDNF levels in children with ADHD before and after methylphenidate treatment.Scandinavian journal of child and adolescent psychiatry and psychology · 2026
    Article
  4. Review
  5. BDNF-amyloid-Frontiers in molecular neuroscience · 2026
    Review
  6. Article
  7. Article
  8. International journal of molecular sciences · 2025
    Article
  9. Article
  10. Article
  11. Review
  12. Review
  13. Article
  14. Review
  15. Review
  16. Finding biomarkers of experience in animals.Journal of animal science and biotechnology · 2024
    Review
  17. Review
  18. Article
  19. Blood-Brain Barrier Biomarkers before and after Kidney Transplantation.International journal of molecular sciences · 2023
    Article
  20. 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

3 authors at 2 institutions in 1 country.

Marta BaliettiCenter for Neurobiology of Aging, INRCA, Via Birarelli 8, 60121, Ancona, Italy. m.balietti@inrca.it.ORCID http://orcid.org/0000-0002-3123-7903
Cinzia GiuliGeriatrics Operative Unit, INRCA, Fermo, 63023, Italy.
Fiorenzo ContiCenter for Neurobiology of Aging, INRCA, Via Birarelli 8, 60121, Ancona, Italy.
Istituto Nazionale di Riposo e Cura per Anziani · ITMarche Polytechnic University · IT

Funding

Italian Ministry of Health and Regione Marche 154/GR-2009-1584108
6 · The paper itself

Abstract

Mounting evidence that alterations in brain-derived neurotrophic factor (BDNF) levels and signaling may be involved in the etiopathogenesis of Alzheimer's disease (AD) has suggested that its blood levels could be used as a biomarker of the disease. However, higher, lower, or unchanged circulating BDNF levels have all been described in AD patients compared to healthy controls. Although the reasons for such different findings are unclear, methodological issues are likely to be involved. The heterogeneity of participant recruitment criteria and the lack of control of variables that influence circulating BDNF levels regardless of dementia (depressive symptoms, medications, lifestyle, lack of overlap between serum and plasma, and experimental aspects) are likely to bias result and prevent study comparability. The present work reviews a broad panel of factors, whose close control could help reduce the inconsistency of study findings, and offers practical advice on their management. Research directed at elucidating the weight of each of these variables and at standardizing analytical methodologies is urgently needed.

Indexed as

Alzheimer DiseaseBiomarkersBrain-Derived Neurotrophic FactorDepressionHumansLife StyleModels, BiologicalBiomarkersBrain-Derived Neurotrophic FactorAlzheimer’s diseaseBiomarkerBloodBrain-derived neurotrophic factorConfounding variables

Identifiers

PMID29330839
PMCPMC6061178
OpenAlexW2782594233

What Socratic 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 Socratic graph.