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Inhibitory effect of ultrasonic stimulation on the voltage-dependent potassium currents in rat hippocampal CA1 neurons
BACKGROUND: Transcranial ultrasonic stimulation is a novel noninvasive tool for neuromodulation, and has high spatial resolution and deep penetration. Although it can increase excitation of neurons, its effects on neuron are poorly understood. This study was to evaluate effect of ultrasonic stimulat...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6321733/ https://www.ncbi.nlm.nih.gov/pubmed/30611209 http://dx.doi.org/10.1186/s12868-018-0485-1 |
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author | Cui, Kun Zhang, Shuai Sun, Jinyao Zhang, Xueying Ding, Chong Xu, Guizhi |
author_facet | Cui, Kun Zhang, Shuai Sun, Jinyao Zhang, Xueying Ding, Chong Xu, Guizhi |
author_sort | Cui, Kun |
collection | PubMed |
description | BACKGROUND: Transcranial ultrasonic stimulation is a novel noninvasive tool for neuromodulation, and has high spatial resolution and deep penetration. Although it can increase excitation of neurons, its effects on neuron are poorly understood. This study was to evaluate effect of ultrasonic stimulation (US) on neurons in vitro. In this paper, the effect of US on the excitability and voltage-dependent [Formula: see text] currents of CA1 pyramidal neurons in the rat hippocampus was studied using patch clamp. RESULTS: Our results suggest that US increased the spontaneous firing rate and inhibited transient outward potassium current ([Formula: see text] ) and delayed rectifier potassium current ([Formula: see text] . Furthermore, US altered the activation of [Formula: see text] channels, inactivation and recovery properties of [Formula: see text] channels. After US, the [Formula: see text] activation curves significantly moved to the negative voltage direction and increased its slope factor. Moreover, the data showed that US moved the inactivation curve of [Formula: see text] to the negative voltage and increased the slope factor. Besides, US delayed the recovery of [Formula: see text] channel. CONCLUSIONS: Our data indicate that US can increase excitation of neurons by inhibiting potassium currents. Different US decreased the voltage sensitivity of [Formula: see text] activation differentially. Moreover, the more time is needed for US to make the [Formula: see text] channels open again after inactivating. US may play a physiological role by inhibiting voltage-dependent potassium currents in neuromodulation. Our research can provide a theoretical basis for the future clinical application of ultrasound in neuromodulation. |
format | Online Article Text |
id | pubmed-6321733 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-63217332019-01-09 Inhibitory effect of ultrasonic stimulation on the voltage-dependent potassium currents in rat hippocampal CA1 neurons Cui, Kun Zhang, Shuai Sun, Jinyao Zhang, Xueying Ding, Chong Xu, Guizhi BMC Neurosci Research Article BACKGROUND: Transcranial ultrasonic stimulation is a novel noninvasive tool for neuromodulation, and has high spatial resolution and deep penetration. Although it can increase excitation of neurons, its effects on neuron are poorly understood. This study was to evaluate effect of ultrasonic stimulation (US) on neurons in vitro. In this paper, the effect of US on the excitability and voltage-dependent [Formula: see text] currents of CA1 pyramidal neurons in the rat hippocampus was studied using patch clamp. RESULTS: Our results suggest that US increased the spontaneous firing rate and inhibited transient outward potassium current ([Formula: see text] ) and delayed rectifier potassium current ([Formula: see text] . Furthermore, US altered the activation of [Formula: see text] channels, inactivation and recovery properties of [Formula: see text] channels. After US, the [Formula: see text] activation curves significantly moved to the negative voltage direction and increased its slope factor. Moreover, the data showed that US moved the inactivation curve of [Formula: see text] to the negative voltage and increased the slope factor. Besides, US delayed the recovery of [Formula: see text] channel. CONCLUSIONS: Our data indicate that US can increase excitation of neurons by inhibiting potassium currents. Different US decreased the voltage sensitivity of [Formula: see text] activation differentially. Moreover, the more time is needed for US to make the [Formula: see text] channels open again after inactivating. US may play a physiological role by inhibiting voltage-dependent potassium currents in neuromodulation. Our research can provide a theoretical basis for the future clinical application of ultrasound in neuromodulation. BioMed Central 2019-01-05 /pmc/articles/PMC6321733/ /pubmed/30611209 http://dx.doi.org/10.1186/s12868-018-0485-1 Text en © The Author(s) 2019 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated. |
spellingShingle | Research Article Cui, Kun Zhang, Shuai Sun, Jinyao Zhang, Xueying Ding, Chong Xu, Guizhi Inhibitory effect of ultrasonic stimulation on the voltage-dependent potassium currents in rat hippocampal CA1 neurons |
title | Inhibitory effect of ultrasonic stimulation on the voltage-dependent potassium currents in rat hippocampal CA1 neurons |
title_full | Inhibitory effect of ultrasonic stimulation on the voltage-dependent potassium currents in rat hippocampal CA1 neurons |
title_fullStr | Inhibitory effect of ultrasonic stimulation on the voltage-dependent potassium currents in rat hippocampal CA1 neurons |
title_full_unstemmed | Inhibitory effect of ultrasonic stimulation on the voltage-dependent potassium currents in rat hippocampal CA1 neurons |
title_short | Inhibitory effect of ultrasonic stimulation on the voltage-dependent potassium currents in rat hippocampal CA1 neurons |
title_sort | inhibitory effect of ultrasonic stimulation on the voltage-dependent potassium currents in rat hippocampal ca1 neurons |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6321733/ https://www.ncbi.nlm.nih.gov/pubmed/30611209 http://dx.doi.org/10.1186/s12868-018-0485-1 |
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