ReviewFrontiers in cellular neuroscience2014
Presynaptic nanodomains: a tale of two synapses.
Review in Frontiers in cellular neuroscience, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.
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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.
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Who cites it
44 citing papers in PubMed, 71 citations in OpenAlex.
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- Roles and Sources of Calcium in Synaptic Exocytosis.Advances in neurobiology · 2023Article
- Inositol 1, 4, 5-trisphosphate receptor is required for spindle assembly inMolecular biology of the cell · 2022Article
- The periodic axon membrane skeleton leads to Na nanodomains but does not impact action potentials.Biophysical journal · 2022Article
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- Calretinin-Expressing Synapses Show Improved Synaptic Efficacy with Reduced Asynchronous Release during High-Rate Activity.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2022Article
- Synaptic vesicle release during ribbon synapse formation of cone photoreceptors.Frontiers in cellular neuroscience · 2022Article
- Stationary CaBiophysical journal · 2021Article
- Presynaptic voltage-gated calcium channels in the auditory brainstem.Molecular and cellular neurosciences · 2021Review
- TRPM4 mediates a subthreshold membrane potential oscillation in respiratory chemoreceptor neurons that drives pacemaker firing and breathing.Cell reports · 2021Article
- Early Metazoan Origin and Multiple Losses of a Novel Clade of RIM Presynaptic Calcium Channel Scaffolding Protein Homologs.Genome biology and evolution · 2020Article
- Presynaptic Calcium Channel Open Probability and Changes in Calcium Influx Throughout the Action Potential Determined Using AP-Waveforms.Frontiers in synaptic neuroscience · 2020Article
Corrections and comments
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Authors and funding
2 authors at 2 institutions in 4 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Here we summarize the evidence from two "giant" presynaptic terminals-the squid giant synapse and the mammalian calyx of Held-supporting the involvement of nanodomain calcium signals in triggering of neurotransmitter release. At the squid synapse, there are three main lines of experimental evidence for nanodomain signaling. First, changing the size of the unitary calcium channel current by altering external calcium concentration causes a non-linear change in transmitter release, while changing the number of open channels by broadening the presynaptic action potential causes a linear change in release. Second, low-affinity calcium indicators, calcium chelators, and uncaging of calcium all suggest that presynaptic calcium concentrations are as high as hundreds of micromolar, which is more compatible with a nanodomain type of calcium signal. Finally, neurotransmitter release is much less affected by the slow calcium chelator, ethylene glycol tetraacetic acid (EGTA), in comparison to the rapid chelator 1,2-bis(o-aminophenoxy)ethane-N,N,N',N'-tetraacetic acid (BAPTA). Similarly, as the calyx of Held synapse matures, EGTA becomes less effective in attenuating transmitter release while the number of calcium channels required to trigger a single fusion event declines. This suggests a developmental transformation of microdomain to nanodomain coupling between calcium channels and transmitter release. Calcium imaging and uncaging experiments, in combination with simulations of calcium diffusion, indicate the peak calcium concentration seen by presynaptic calcium sensors reaches at least tens of micromolar at the calyx of Held. Taken together, data from these provide a compelling argument that nanodomain calcium signaling gates very rapid transmitter release.
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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.