Evidence map›Paper›PMID 25220079›Full record

ArticleHuman brain mapping2015

BDNF Val66met and 5-HTTLPR polymorphisms predict a human in vivo marker for brain serotonin levels.

Patrick M Fisher, Klaus K Holst, Dea Adamsen, Anders Bue Klein, Vibe G Frokjaer, Peter S Jensen, Claus Svarer, Nic Gillings, William F C Baare, Jens D Mikkelsen and 1 more

Open access · greenAbstract read
In one paragraph

Article in Human brain mapping, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
1.2field-weighted citation impact, top 26% 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

22 citing papers in PubMed, 32 citations in OpenAlex.

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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

11 authors at 4 institutions in 1 country.

Patrick M FisherCenter for Integrated Molecular Brain Imaging, Copenhagen University Hospital Rigshospitalet, Copenhagen O, Denmark; Neurobiology Research Unit, Copenhagen University Hospital Rigshospitalet, Copenhagen O, Denmark.
Klaus K Holst
Dea Adamsen
Anders Bue Klein
Vibe G Frokjaer
Peter S Jensen
Claus Svarer
Nic Gillings
William F C Baare
Jens D Mikkelsen
Gitte M Knudsen
Copenhagen University Hospital · DKRigshospitalet · DKHvidovre Hospital · DKUniversity of Copenhagen · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Brain-derived neurotrophic factor (BDNF) has been implicated in multiple aspects of brain function including regulation of serotonin signaling. The BDNF val66met polymorphism (rs6265) has been linked to aspects of serotonin signaling in humans but its effects are not well understood. To address this, we evaluated whether BDNF val66met was predictive of a putative marker of brain serotonin levels, serotonin 4 receptor (5-HT4 ) binding assessed with [11C]SB207145 positron emission tomography, which has also been associated with the serotonin-transporter-linked polymorphic region (5-HTTLPR) polymorphism. We applied a linear latent variable model (LVM) using regional 5-HT4 binding values (neocortex, amygdala, caudate, hippocampus, and putamen) from 68 healthy humans, allowing us to explicitly model brain-wide and region-specific genotype effects on 5-HT4 binding. Our data supported an LVM wherein BDNF val66met significantly predicted a LV reflecting [11C]SB207145 binding across regions (P = 0.005). BDNF val66met met-carriers showed 2-9% higher binding relative to val/val homozygotes. In contrast, 5-HTTLPR did not predict the LV but S-carriers showed 7% lower neocortical binding relative to LL homozygotes (P = 7.3 × 10(-6)). We observed no evidence for genetic interaction. Our findings indicate that BDNF val66met significantly predicts a common regulator of brain [11C]SB207145 binding, which we hypothesize reflects brain serotonin levels. In contrast, our data indicate that 5-HTTLPR specifically affects 5-HT4 binding in the neocortex. These findings implicate serotonin signaling as an important molecular mediator underlying the effects of BDNF val66met and 5-HTTLPR on behavior and related risk for neuropsychiatric illness in humans.

Indexed as

AdolescentAdultBrainBrain-Derived Neurotrophic FactorFemaleGenotypeHumansImaging, Three-DimensionalLinear ModelsMagnetic Resonance ImagingMaleMethionineMiddle AgedPiperidinesPolymorphism, Single NucleotideProtein BindingBrain-Derived Neurotrophic FactorMethioninePiperidinesSB 207145SerotoninSerotonin Plasma Membrane Transport ProteinsSLC6A4 protein, humanValine5-HT4 receptor5-HTTLPRBDNFpositron emission tomographyserotonin

Identifiers

PMID25220079
PMCPMC6869129
OpenAlexW1482357885

What OpenQuestion holds

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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.