Cited by 611Nerve injury and regenerationNeuroscience and Neuropharmacology ResearchNeurotransmitter Receptor Influence on Behavior

Brain-derived neurotrophic factor rapidly enhances synaptic transmission in hippocampal neurons via postsynaptic tyrosine kinase receptors

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Levine, E S, Dreyfus, C F, Black, I B, Plummer, M R·1995·Proceedings of the National Academy of Sciences

Abstract

Although neurotrophins are primarily associated with long-term effects on neuronal survival and differentiation, recent studies have shown that acute changes in synaptic transmission can also be produced. In the hippocampus, an area critically involved in learning and memory, we have found that brain-derived neurotrophic factor (BDNF) rapidly enhanced synaptic efficacy through a previously unreported mechanism--increased postsynaptic responsiveness via a phosphorylation-dependent pathway. Within minutes of BDNF application to cultured hippocampal neurons, spontaneous firing rate was dramatically increased, as were the frequency and amplitude of excitatory postsynaptic currents. The increased frequency of postsynaptic currents resulted from the change in presynaptic firing. However, the increased amplitude was postsynaptic in origin because it was selectively blocked by intracellular injection of the tyrosine kinase receptor (Ntrk2/TrkB) inhibitor K-252a and potentiated by injection of the phosphatase inhibitor okadaic acid. These results suggest a role for BDNF in the modulation of synaptic transmission in the hippocampus.

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Authors
Levine, E. S., Dreyfus, C. F., Black, I. B., & Plummer, M. R.
Affiliations
University of Medicine and Dentistry of New Jersey (US)
Venue
Proceedings of the National Academy of Sciences
Published
1995-08-15
Volume
92
Issue
17
Pages
8074-8077
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2029863311
Cited by
611
References
2
Citations by year
2026: 2 · 2025: 7 · 2024: 11 · 2023: 7 · 2022: 12 · 2021: 8 · 2020: 9 · 2019: 10 · 2018: 18 · 2017: 7 · 2016: 19 · 2015: 17 · 2014: 17 · 2013: 9 · 2012: 17
FWCI
14.01
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
Eunice Kennedy Shriver National Institute of Child Health and Human Development (P01HD023315)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Nerve injury and regeneration
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
brain-derived neurotrophic factor, synaptic transmission, hippocampal neurons, postsynaptic receptors, TrkB receptor, NTRK2, tyrosine kinase, K252a, okadaic acid, phosphatase inhibition, excitatory postsynaptic currents, spontaneous firing rate
MeSH terms
Animals, Carbazoles, Cells, Cultured, Embryo, Mammalian, Ethers, Cyclic, Evoked Potentials, Hippocampus, Kinetics, Nerve Growth Factors, Nerve Tissue Proteins, Synaptic Transmission, Neurons, Protein Kinase C, Synapses, Time Factors, Protein Tyrosine Phosphatases, Rats, Sprague-Dawley, Patch-Clamp Techniques, Brain-Derived Neurotrophic Factor, Okadaic Acid, Receptor Protein-Tyrosine Kinases, Indole Alkaloids, Rats

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