Evidence map›Paper›PMID 26932787›Full record

ArticleMolecular brain2016

Opposing presynaptic roles of BDNF and ProBDNF in the regulation of persistent activity in the entorhinal cortex.

Julien Gibon, Philip A Barker, Philippe Séguéla

Open access · goldAbstract read
In one paragraph

Article in Molecular brain, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 1 pooled it
2.5field-weighted citation impact, top 12% 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

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

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Exerkines and myokines in aging sarcopenia.Frontiers in endocrinology · 2025
    Review
  7. Article
  8. BDNF-TrkB/proBDNF-p75Scientific reports · 2023
    Article
  9. Review
  10. Article
  11. Sexual Dimorphism in Balance and Coordination in p75NTRFrontiers in behavioral neuroscience · 2022
    Article
  12. Review
  13. Article
  14. BDNF Impact on Biological Markers of Depression-Role of Physical Exercise and Training.International journal of environmental research and public health · 2021
    Review
  15. Article
  16. Article
  17. Article
  18. Essential and sex-specific effects of mGluR5 in ventromedial hypothalamus regulating estrogen signaling and glucose balance.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  19. Article
  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

3 authors at 2 institutions in 1 country.

Julien GibonDepartment of Neurology and Neurosurgery, Montreal Neurological Institute, McGill University, Suite 778, Montreal, Quebec, H3A 2B4, Canada. julien.gibon@ubc.ca.
Philip A BarkerDepartment of Neurology and Neurosurgery, Montreal Neurological Institute, McGill University, Suite 778, Montreal, Quebec, H3A 2B4, Canada. philip.barker@ubc.ca.
Philippe SéguélaDepartment of Neurology and Neurosurgery, Montreal Neurological Institute, McGill University, Suite 778, Montreal, Quebec, H3A 2B4, Canada. philippe.seguela@mcgill.ca.
McGill University · CAMontreal Neurological Institute and Hospital · CA

Funding

Canadian Institutes of Health Research 130239Canadian Institutes of Health Research 37850
6 · The paper itself

Abstract

backgroundSustained, persistent firing (PF) of cortical pyramidal neurons following a short depolarization is a crucial cellular mechanism required for spatial and working memory. Pyramidal neurons in the superficial and deep layers of the medial and lateral entorhinal cortex (EC) display this property of prolonged firing activity. Here, we focused on the regulation of this activity in EC neurons by mature brain derived neurotrophic factor (BDNF) and its precursor proBDNF.

resultsUsing patch clamp electrophysiology in acute mouse cortical slices, we observed that BDNF facilitates cholinergic PF in pyramidal neurons in layer V of the medial EC. Inhibition of TrkB with K252a blocks the potentiating effect of BDNF whereas inhibition of p75NTR with function-blocking antibodies does not. By recording spontaneous excitatory post-synaptic currents (sEPSC), we find that BDNF acts pre-synaptically via TrkB to increase glutamate release whereas proBDNF acting via p75NTR acts to reduce it. MPEP abolished the facilitating effect of BDNF on PF, demonstrating that the metabotropic glutamate receptor mGluR5 plays a critical role in the BDNF effect. In contrast, paired pulse ratio and EPSC measurements indicated that proBDNF, via presynaptic p75NTR, is a negative regulator of glutamate release in the EC.

conclusionsTaken together, our findings demonstrate that the BDNF/TrkB pathway facilitates persistent activity whereas the proBDNF/p75NTR pathway inhibits this mnemonic property of entorhinal pyramidal neurons.

Indexed as

Action PotentialsAnimalsBrain-Derived Neurotrophic FactorCholinergic NeuronsEntorhinal CortexGlutamatesMaleMice, Inbred C57BLModels, NeurologicalPresynaptic TerminalsProtein BiosynthesisProtein PrecursorsPyramidal CellsReceptor, Metabotropic Glutamate 5Receptors, Nerve Growth FactorRNA, MessengerBrain-Derived Neurotrophic Factorbrain-derived neurotrophic factor precursorGlutamatesProtein PrecursorsReceptor, Metabotropic Glutamate 5Receptors, Nerve Growth FactorRNA, Messenger

Identifiers

PMID26932787
PMCPMC4774087
OpenAlexW2292155060

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.