The DOI matches its Crossref record; 47 of the 47 references it cites were found in a registry or an index.
Ca2+ buffering and action potential-evoked Ca2+ signaling in dendrites of pyramidal neurons
Open accessAbstract
The effect of the fluorescent Ca2+ indicator dye Fura-2 on Ca2+ dynamics was studied in proximal apical dendrites of neocortical layer V and hippocampal CA1 pyramidal neurons in rat brain slices using somatic whole-cell recording and a charge-coupled device camera. A single action potential evoked a transient increase of intradendritic calcium concentration ([Ca2+]i) that was reduced in size and prolonged when the Fura-2 concentration was increased from 20 to 250 microM. Extrapolation to zero Fura-2 concentration suggests that "physiological" transients at 37 degrees C have large amplitudes (150-300 nM) and fast decays (time constant < 100 ms). Assuming a homogeneous compartment model for the dendrite, 0.5-1% of the total Ca2+ entering during an action potential was estimated to remain free. Washout of cytoplasmic Ca2+ buffers was not detectable, suggesting that they are relatively immobile. During trains of action potentials, [Ca2+]i increased and rapidly reached a steady state (time constant < 200 ms), fluctuating around a plateau level which depended linearly on the action potential frequency. Thus, the mean dendritic [Ca2+]i encodes the action potential frequency during physiological patterns of electrical activity and may regulate Ca(2+)-dependent dendritic functions in an activity-dependent way.
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“relative to the resting level of intracellular Ca2+ (20–50 nM) (109–111)”
From Synaptic memory and CaMKII (2023) · cites this paper as [111]
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A new generation of Ca2+ indicators with greatly improved fluorescence properties.
Grynkiewicz, G., Poenie, M., & Tsien, R. Y. (1985) · Journal of Biological Chemistry · doi:10.1016/s0021-9258(19)83641-4 · Cited by 21,722
Calcium's Role in Mechanotransduction during Muscle Development
Damm, T. B., & Egli, M. (2014) · Cellular Physiology and Biochemistry · doi:10.1159/000356667 · Cited by 14,552
A synaptic model of memory: long-term potentiation in the hippocampus
Bliss, T. V. P., & Collingridge, G. L. (1993) · Nature · doi:10.1038/361031a0 · Cited by 11,566
Polazzi, E., Mengoni, I., Caprini, M., Peña‐Altamira, E., Kurtys, E., & Monti, B. (2012) · Neurosignals · doi:10.1159/000337115 · Cited by 9,023
Lev, S., Moreno, H., Martinez, R., Canoll, P., Peles, E., Musacchio, J. M., Plowman, G. D., Rudy, B., & Schlessinger, J. (1995) · Nature · doi:10.1038/376737a0 · Cited by 1,382
Calcium-binding proteins in the nervous system
Baimbridge, K. G., Celio, M. R., & ROGERS, J. H. (1992) · Trends in Neurosciences · doi:10.1016/0166-2236(92)90081-i · Cited by 1,329
Active propagation of somatic action potentials into neocortical pyramidal cell dendrites
Stuart, G. J., & Sakmann, B. (1994) · Nature · doi:10.1038/367069a0 · Cited by 1,289
Self-citationDendritic spines as basic functional units of neuronal integration
Yuste, R., & Denk, W. (1995) · Nature · doi:10.1038/375682a0 · Cited by 950
Activity-Dependent Action Potential Invasion and Calcium Influx into Hippocampal CA1 Dendrites
Spruston, N., Schiller, Y., Stuart, G. J., & Sakmann, B. J. (1995) · Science · doi:10.1126/science.7716524 · Cited by 839
Self-citationStuart, G. J., Dodt, H., & Sakmann, B. J. (1993) · Pflügers Archiv - European Journal of Physiology · doi:10.1007/bf00374949 · Cited by 800
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Hoffman, D. A., Magee, J. C., Colbert, C. M., & Johnston, D. (1997) · Nature · doi:10.1038/43119 · Cited by 1,392
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Metadata
- Authors
- Helmchen, F., Imoto, K., & Sakmann, B.
- Affiliations
- Max Planck Society (DE)
- Max Planck Institute for Medical Research (DE)
- ORCID
- Helmchen, F.
- Venue
- Biophysical Journal
- Publisher
- Elsevier BV
- Published
- 1996-02
- Volume
- 70
- Issue
- 2
- Pages
- 1069-1081
- ISSN
- 0006-3495 (ISSN-L)
- PMC
- PMC1225009
- OpenAlex
- W2006602134
- Cited by
- 559
- References
- 47
- Citations by year
- 2026: 7 · 2025: 9 · 2024: 2 · 2023: 9 · 2022: 13 · 2021: 9 · 2020: 11 · 2019: 14 · 2018: 18 · 2017: 12 · 2016: 18 · 2015: 27 · 2014: 23 · 2013: 17 · 2012: 27
- FWCI
- 10.02
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- Locations
- Biophysical Journal (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Max Planck Institute for Plasma Physics (submittedVersion)
- Max Planck Digital Library (submittedVersion)
- MPG.PuRe (Max Planck Society) (submittedVersion)
- Topics
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ion channel regulation and function
- Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
- Keywords
- calcium buffering, dendritic calcium signaling, pyramidal neurons, hippocampal CA1, fura-2, calcium indicator dyes, action potential frequency
- MeSH terms
- Action Potentials, Animals, Biophysics, Buffers, Calcium, Cell Compartmentation, Dendrites, Fluorescent Dyes, Indicators and Reagents, Kinetics, Models, Neurological, Signal Transduction, Fura-2, Rats, Wistar, Pyramidal Cells, Rats, Biophysical Phenomena, In Vitro Techniques
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