Evidence map›Paper›PMID 24465375›Full record

ArticlePloS one2014

BDNF polymorphisms are linked to poorer working memory performance, reduced cerebellar and hippocampal volumes and differences in prefrontal cortex in a Swedish elderly population.

Samantha J Brooks, Emil K Nilsson, Josefin A Jacobsson, Dan J Stein, Robert Fredriksson, Lars Lind, Helgi B Schiöth

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 1 pooled it
2.8field-weighted citation impact, top 10% 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

23 citing papers in PubMed, 1 synthesis or guideline pooled it, 42 citations in OpenAlex.

  1. Pooled it
  2. Brain-Derived Neurotropic FactorBioMed research international · 2017
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  13. Frontiers in neuroscience · 2018
    Article
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  15. The BDNF ValBehavioural brain research · 2017
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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

7 authors at 2 institutions in 2 countries.

Samantha J BrooksDepartment of Neuroscience, Functional Pharmacology, Uppsala University, Uppsala, Sweden ; Department of Psychiatry and Mental Health, Faculty of Health Sciences, University of Cape Town, Observatory, Cape Town, South Africa.
Emil K NilssonDepartment of Neuroscience, Functional Pharmacology, Uppsala University, Uppsala, Sweden.
Josefin A JacobssonDepartment of Neuroscience, Functional Pharmacology, Uppsala University, Uppsala, Sweden.
Dan J SteinDepartment of Psychiatry and Mental Health, Faculty of Health Sciences, University of Cape Town, Observatory, Cape Town, South Africa.
Robert FredrikssonDepartment of Neuroscience, Functional Pharmacology, Uppsala University, Uppsala, Sweden.
Lars LindDepartment of Medical Sciences, Uppsala University, Uppsala, Sweden.
Helgi B SchiöthDepartment of Neuroscience, Functional Pharmacology, Uppsala University, Uppsala, Sweden.
Uppsala University · SEUniversity of Cape Town · ZA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundBrain-derived neurotrophic factor (BDNF) links learning, memory and cognitive decline in elderly, but evidence linking BDNF allele variation, cognition and brain structural differences is lacking.

methods367 elderly Swedish men (n = 181) and women (n = 186) from Prospective Investigation of the Vasculature in Uppsala seniors (PIVUS) were genotyped and the BDNF functional rs6265 SNP was further examined in subjects who completed the Trail Making Task (TMT), verbal fluency task, and had a magnetic resonance imaging (MRI) scan. Voxel-based morphometry (VBM) examined brain structure, cognition and links with BDNF.

resultsThe functional BDNF SNP (rs6265,) predicted better working memory performance on the TMT with positive association of the Met rs6265, and was linked with greater cerebellar, precuneus, left superior frontal gyrus and bilateral hippocampal volume, and reduced brainstem and bilateral posterior cingulate volumes.

conclusionsThe functional BDNF polymorphism influences brain volume in regions associated with memory and regulation of sensorimotor control, with the Met rs6265 allele potentially being more beneficial to these functions in the elderly.

Indexed as

Memory, Short-TermPolymorphism, Single NucleotideAgedBrain-Derived Neurotrophic FactorCerebellumExecutive FunctionFemaleFunctional NeuroimagingGene ExpressionGenetic Association StudiesHippocampusHumansLinkage DisequilibriumMaleOrgan SizePrefrontal CortexBDNF protein, humanBrain-Derived Neurotrophic Factor

Identifiers

PMID24465375
PMCPMC3900399
OpenAlexW2051024460

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.