Cited by 117Neuroscience and Neuropharmacology ResearchNeural dynamics and brain functionIon channel regulation and function

Calcium dynamics of spines depend on their dendritic location

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Holthoff, Knut, Tsay, David, Yuste, Rafael·2002·Neuron

Abstract

Dendritic spines are morphologically and functionally heterogeneous. To understand this diversity, we use two-photon imaging of layer 5 neocortical pyramidal cells and measure action potential-evoked [Ca(2+)]i transients in spines. Spine calcium kinetics are controlled by (i) the diameter of the parent dendrite, (ii) the length of the spine neck, and (iii) the strength of spine calcium pumps. These factors produce different calcium dynamics in spines from basal, proximal apical, and distal apical dendrites, differences that are more pronounced without exogenous buffers. In proximal and distal apical dendrites, different calcium dynamics correlate with different susceptibility to synaptic depression, and modifying calcium kinetics in spines changes the expression of long-term depression. Thus, the spine location apparently determines its calcium dynamics and synaptic plasticity. Our results highlight the precision in design of neocortical neurons.

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Crossref · 10.1016/s0896-6273(02)00576-7

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48 of 48 references verified0 citation errors · 0 not checkable

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  • Dendritic diameter is thought to be an important contributor to signal integration and transduction in dendrites.

    “dendritic diameter is thought to be an important contributor to signal integration and transduction in dendrites (Sorra and Harris, 2000;Holthoff et al., 2002)”
  • Long and thin necks prevent the diffusion of calcium, whereas shorter and thicker necks allow for better diffusional coupling with the dendrite.

    “Nevertheless, morphology does play a role, as long and thin necks prevent the diffusion of calcium, whereas shorter and thicker necks allow for better diffusional coupling with the dendrite (Majewska et al., 2000; Holthoff et al., 2002; Sabatini et al., 2002; Korkotian et al., 2004; Noguchi et al., 2005).”

    From Barriers in the brain: resolving dendritic spine morphology and compartmentalization (2014) · cites this paper as Holthoff et al., 2002

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Authors
Holthoff, K., Tsay, D., & Yuste, R.
Affiliations
Columbia University (US)
Corresponding author
Holthoff, Knut
Venue
Neuron
Publisher
Elsevier BV
Published
2002-01
Volume
33
Issue
3
Pages
425-437
ISSN
0896-6273 (ISSN-L)
OpenAlex
W1979356066
Cited by
117
References
49
Citations by year
2026: 2 · 2025: 3 · 2024: 4 · 2023: 2 · 2022: 2 · 2021: 2 · 2020: 3 · 2019: 1 · 2017: 2 · 2015: 2 · 2014: 5 · 2013: 4 · 2012: 2
FWCI
4.20
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Eye Institute (EY-11787, R01EY013237, EY 13237, R01EY011787)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ion channel regulation and function
Keywords
dendritic spines, calcium dynamics, calcium transients, calcium pump, synaptic depression, long-term depression, synaptic plasticity, layer 5 pyramidal neurons, neocortex, calcium buffering
MeSH terms
Animals, Calcium, Dendrites, Fluorescent Dyes, Mathematics, Models, Biological, Models, Neurological, Neuronal Plasticity, Statistics as Topic, Visual Cortex, Pyramidal Cells, Patch-Clamp Techniques, Microscopy, Confocal, Mice, In Vitro Techniques

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