Evidence map›Paper›PMID 22811938›Full record

ArticleNeural plasticity2012

Intracellular Ca2+ stores and Ca2+ influx are both required for BDNF to rapidly increase quantal vesicular transmitter release.

Michelle D Amaral, Lucas Pozzo-Miller

Open access · goldAbstract read
In one paragraph

Article in Neural plasticity, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
2.0field-weighted citation impact, top 15% 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

30 citing papers in PubMed, 49 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. Brain Proteome and Behavioural Analysis in Wild Type, BDNFInternational journal of molecular sciences · 2022
    Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Review
  16. Article
  17. Article
  18. TheFrontiers in cellular neuroscience · 2017
    Article
  19. Mechanisms of BDNF regulation in asthmatic airway smooth muscle.American journal of physiology. Lung cellular and molecular physiology · 2016
    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

2 authors at 1 institution in 1 country.

Michelle D AmaralDepartment of Neurobiology, Civitan International Research Center, The University of Alabama at Birmingham, SHEL-1002, 1825 University Boulevard, Birmingham, AL 35294-2182, USA.
Lucas Pozzo-Miller
Civitan International · US

Funding

UAB MENTAL RETARDATION RESEARCH CENTER (MRRC)P30HD038985 · NICHD · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI BRENNER, MICHAEL · 2000 to 2012
$8.6M
ACTIONS OF BDNF ON CA2+ SIGNALS IN HIPPOCAMPAL NEURONSR01NS040593 · NINDS · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI POZZO-MILLER, LUCAS D · 2000 to 2010
$2.8M
MeCP2 Modulation of BDNF Signaling: Shared Mechanisms of Rett and AutismR01NS065027 · NINDS · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI POZZO-MILLER, LUCAS D · 2010 to 2014
$1.7M
NICHD NIH HHS P30 HD038985NINDS NIH HHS NS-065027NINDS NIH HHS NS40593NINDS NIH HHS R01 NS040593NINDS NIH HHS R01 NS065027
6 · The paper itself

Abstract

Brain-derived neurotrophic factor (BDNF) is well known as a survival factor during brain development as well as a regulator of adult synaptic plasticity. One potential mechanism to initiate BDNF actions is through its modulation of quantal presynaptic transmitter release. In response to local BDNF application to CA1 pyramidal neurons, the frequency of miniature excitatory postsynaptic currents (mEPSC) increased significantly within 30 seconds; mEPSC amplitude and kinetics were unchanged. This effect was mediated via TrkB receptor activation and required both full intracellular Ca(2+) stores as well as extracellular Ca(2+). Consistent with a role of Ca(2+)-permeable plasma membrane channels of the TRPC family, the inhibitor SKF96365 prevented the BDNF-induced increase in mEPSC frequency. Furthermore, labeling presynaptic terminals with amphipathic styryl dyes and then monitoring their post-BDNF destaining in slice cultures by multiphoton excitation microscopy revealed that the increase in frequency of mEPSCs reflects vesicular fusion events. Indeed, BDNF application to CA3-CA1 synapses in TTX rapidly enhanced FM1-43 or FM2-10 destaining with a time course that paralleled the phase of increased mEPSC frequency. We conclude that BDNF increases mEPSC frequency by boosting vesicular fusion through a presynaptic, Ca(2+)-dependent mechanism involving TrkB receptors, Ca(2+) stores, and TRPC channels.

Indexed as

AnimalsBrain-Derived Neurotrophic FactorCA1 Region, HippocampalCalciumCalcium Channel BlockersExcitatory Postsynaptic PotentialsImidazolesKineticsMicroscopy, FluorescenceOrgan Culture TechniquesPatch-Clamp TechniquesPresynaptic TerminalsPyramidal CellsRatsRats, Sprague-DawleyReceptor, trkB1-(2-(3-(4-methoxyphenyl)propoxy)-4-methoxyphenylethyl)-1H-imidazoleBrain-Derived Neurotrophic FactorCalciumCalcium Channel BlockersImidazolesReceptor, trkBTetrodotoxinVesicular Neurotransmitter Transport Proteins

Identifiers

PMID22811938
PMCPMC3397209
OpenAlexW2002958460

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.