Evidence map›Paper›PMID 33324399›Full record

ArticleFrontiers in immunology2020

Platelets Selectively Regulate the Release of BDNF, But Not That of Its Precursor Protein, proBDNF.

Jessica Le Blanc, Samuel Fleury, Imane Boukhatem, Jean-Christophe Bélanger, Mélanie Welman, Marie Lordkipanidzé

Open access · goldAbstract readComparative Study
In one paragraph

Article in Frontiers in immunology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed, 1 pooled it
3.5field-weighted citation impact, top 6% 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

43 citing papers in PubMed, 1 synthesis or guideline pooled it, 60 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

6 authors at 1 institution in 1 country.

Jessica Le BlancFaculty of Pharmacy, Université de Montréal, Montréal, QC, Canada.
Samuel FleuryFaculty of Pharmacy, Université de Montréal, Montréal, QC, Canada.
Imane BoukhatemFaculty of Pharmacy, Université de Montréal, Montréal, QC, Canada.
Jean-Christophe BélangerFaculty of Pharmacy, Université de Montréal, Montréal, QC, Canada.
Mélanie WelmanResearch Center, Montreal Heart Institute, Montréal, QC, Canada.
Marie LordkipanidzéFaculty of Pharmacy, Université de Montréal, Montréal, QC, Canada.
Montreal Heart Institute · CA

Funding

CIHR PJT-159569
6 · The paper itself

Abstract

Background: Brain-derived neurotrophic factor (BDNF) plays a role in synaptic plasticity and neuroprotection. BDNF has well-established pro-survival effects, whereas its precursor protein, proBDNF, induces apoptosis. Thus, it has been suggested that the proBDNF/BDNF ratio could be an indicator of neuronal health. Access to neurons is, understandably, limited. Because of their similarities, platelets have been put forward as a non-invasive biomarker of neuronal health; indeed, they store large quantities of BDNF and can release it into circulation upon activation, similarly to neurons. However, whether platelets also express the precursor proBDNF protein remains unknown. We therefore sought to characterize proBDNF levels in human platelets and plasma. Methods: The presence of proBDNF was assessed by immunoblotting, cell fractionation, flow cytometry, and confocal microscopy in washed platelets from 10 healthy volunteers. Platelets from 20 independent healthy volunteers were activated with several classical agonists and the release of BDNF and proBDNF into plasma was quantified by ELISA. Results: Platelets expressed detectable levels of proBDNF (21 ± 13 fmol/250 x 10 Conclusions: Platelets express both the mature and the precursor form of BDNF. Whether the intraplatelet proBDNF to BDNF ratio could be used as a non-invasive biomarker of cognitive health warrants further investigation.

Indexed as

Platelet ActivationAdenosine DiphosphateAdultArachidonic AcidBlood PlateletsBrain-Derived Neurotrophic FactorCollagenFemaleHumansMaleMiddle AgedPlatelet AggregationProtein PrecursorsSecretory PathwayYoung AdultAdenosine DiphosphateArachidonic AcidBDNF protein, humanBrain-Derived Neurotrophic Factorbrain-derived neurotrophic factor precursorCollagenProtein Precursorsbrain-derived neurotrophic factorplasmaplateletspro-BDNFsecretion

Identifiers

PMID33324399
PMCPMC7723927
OpenAlexW3110000759

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.