Cited by 107Ion channel regulation and functionMicrobial Inactivation MethodsIon Channels and Receptors

Nanosecond Electric Pulses: A Novel Stimulus for Triggering Ca2+ Influx into Chromaffin Cells Via Voltage-Gated Ca2+ Channels

Open access
Craviso, Gale L., Choe, Sophie, Chatterjee, Paroma, Chatterjee, Indira, Vernier, P. Thomas·2010·Cellular and Molecular Neurobiology

Abstract

Exposing bovine chromaffin cells to a single 5 ns, high-voltage (5 MV/m) electric pulse stimulates Ca(2+) entry into the cells via L-type voltage-gated Ca(2+) channels (VGCC), resulting in the release of catecholamine. In this study, fluorescence imaging was used to monitor nanosecond pulse-induced effects on intracellular Ca(2+) level ([Ca(2+)](i)) to investigate the contribution of other types of VGCCs expressed in these cells in mediating Ca(2+) entry. ω-Conotoxin GVIA and ω-agatoxin IVA, antagonists of N-type and P/Q-type VGCCs, respectively, reduced the magnitude of the rise in [Ca(2+)](i) elicited by a 5 ns pulse. ω-conotoxin MVIIC, which blocks N- and P/Q-type VGCCs, had a similar effect. Blocking L-, N-, and P\Q-type channels simultaneously with a cocktail of VGCC inhibitors abolished the pulse-induced [Ca(2+)](i) response of the cells, suggesting Ca(2+) influx occurs only via VGCCs. Lowering extracellular K(+) concentration from 5 to 2 mM or pulsing cells in Na(+)-free medium suppressed the pulse-induced rise in [Ca(2+)](i) in the majority of cells. Thus, both membrane potential and Na(+) entry appear to play a role in the mechanism by which nanoelectropulses evoke Ca(2+) influx. However, activation of voltage-gated Na(+) channels (VGSC) is not involved since tetrodotoxin (TTX) failed to block the pulse-induced rise in [Ca(2+)](i). These findings demonstrate that a single electric pulse of only 5 ns duration serves as a novel stimulus to open multiple types of VGCCs in chromaffin cells in a manner involving Na(+) transport across the plasma membrane. Whether Na(+) transport occurs via non-selective cation channels and/or through lipid nanopores remains to be determined.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1007/s10571-010-9573-1

Cites

32 of 32 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • After the first threshold is surpassed, the Vm depolarizes the membrane sufficiently to trigger the formation of aqueous pores and stimulate other voltage-dependent processes such as ion channel activation and cytoskeletal disruption.

    “After the first threshold is surpassed, it is thought that the Vm depolarizes the membrane sufficiently to trigger the formation of aqueous pores and stimulate other voltage-dependent processes such as ion channel activation and cytoskeletal disruption [62,65].”

    From Permeabilizing Cell Membranes with Electric Fields (2021) · cites this paper as [65]

  • 5-ns duration, high-intensity (50,000 V/cm) electric pulses were sufficient to open up the L-type Cav2+ channels, resulting in detectable calcium influx.

    “This study concluded that 5-ns duration, high-intensity (50,000 V/cm) electric pulses were sufficient to open up the L-type Cav2+ channels, resulting in detectable calcium influx [65].”

    From Permeabilizing Cell Membranes with Electric Fields (2021) · cites this paper as [65]

  • Ion channel activation and ion influx, and perhaps other effects such as cytoskeleton damage, can be used as biomarkers of responsiveness to TTFields.

    “The results from electroporation studies further support that ion channel activation and ion influx, and perhaps other effects such as cytoskeleton damage, can be used as biomarkers of responsiveness to TTFields, given that these phenomena are observed after exposure to electric fields [27,46,62,65].”

    From Permeabilizing Cell Membranes with Electric Fields (2021) · cites this paper as [65]

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Craviso, G. L., Choe, S., Chatterjee, P., Chatterjee, I., & Vernier, P. T.
Affiliations
  • University of Nevada, Reno (US)
  • University of Southern California (US)
Corresponding author
Craviso, Gale L.
Venue
Cellular and Molecular Neurobiology
Published
2010-11
Volume
30
Issue
8
Pages
1259-1265
ISSN
  • 0272-4340 (ISSN-L)
  • 1573-6830
OpenAlex
W2003802737
Cited by
107
References
32
Citations by year
2026: 5 · 2025: 2 · 2024: 3 · 2023: 10 · 2022: 6 · 2021: 9 · 2020: 7 · 2019: 6 · 2018: 12 · 2017: 13 · 2016: 6 · 2015: 8 · 2014: 5 · 2013: 5 · 2012: 6
FWCI
1.95
Type
journal article
Language
en
Open access
Locations
  • Cellular and Molecular Neurobiology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Agence Nationale pour la Gestion des Déchets Radioactifs
  • Air Force Office of Scientific Research
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ion channel regulation and function
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biotechnology › Microbial Inactivation Methods
  • Life Sciences › Neuroscience › Sensory Systems › Ion Channels and Receptors
Keywords
nanosecond pulsed electric fields, chromaffin cells, voltage-gated calcium channels, L-type calcium channels, N-type calcium channels, P/Q-type calcium channels, intracellular calcium influx, catecholamine release, omega-conotoxin GVIA, omega-agatoxin IVA, omega-conotoxin MVIIC, sodium transport, membrane potential, tetrodotoxin
MeSH terms
Animals, Calcium, Calcium Channel Blockers, Cattle, Electricity, Extracellular Space, Membrane Potentials, Sodium, Time Factors, Calcium Channels, Ion Channel Gating, Chromaffin Cells, Calcium Signaling

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review