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Sevoflurane Increases Hippocampal Theta Oscillations and Impairs Memory Via TASK-3 Channels
Sevoflurane can induce memory impairment during clinical anesthesia; however, the underlying mechanisms are largely unknown. TASK-3 channels are one of the potential targets of sevoflurane. Accumulating evidence supports a negative role of intracranial theta rhythms (4–12 Hz) in memory formation. He...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8581481/ https://www.ncbi.nlm.nih.gov/pubmed/34776954 http://dx.doi.org/10.3389/fphar.2021.728300 |
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author | Han, Linlin Zhao, Shuai Xu, Feng Wang, Yafeng Zhou, Ruihui Huang, Shiqian Ding, Yuanyuan Deng, Daling Mao, Weike Chen, Xiangdong |
author_facet | Han, Linlin Zhao, Shuai Xu, Feng Wang, Yafeng Zhou, Ruihui Huang, Shiqian Ding, Yuanyuan Deng, Daling Mao, Weike Chen, Xiangdong |
author_sort | Han, Linlin |
collection | PubMed |
description | Sevoflurane can induce memory impairment during clinical anesthesia; however, the underlying mechanisms are largely unknown. TASK-3 channels are one of the potential targets of sevoflurane. Accumulating evidence supports a negative role of intracranial theta rhythms (4–12 Hz) in memory formation. Here, we investigated whether TASK-3 channels contribute to sevoflurane-induced memory impairment by regulating hippocampal theta rhythms. In this study, the memory performance of mice was tested by contextual fear conditioning and inhibitory avoidance experiments. The hippocampal local field potentials (LFPs) were recorded from chronically implanted electrodes located in CA3 region. The results showed that sevoflurane concentration-dependently impaired the memory function of mice, as evidenced by the decreased time mice spent on freezing and reduced latencies for mice to enter the shock compartment. Our electrophysiological results revealed that sevoflurane also enhanced the spectral power of hippocampal LFPs (1–30 Hz), particularly in memory-related theta rhythms (4–12 Hz). These effects were mitigated by viral-mediated knockdown of TASK-3 channels in the hippocampal CA3 region. The knockdown of hippocampal TASK-3 channels significantly reduced the enhancing effect of sevoflurane on hippocampal theta rhythms and alleviated sevoflurane-induced memory impairment. Our data indicate that sevoflurane can increase hippocampal theta oscillations and impair memory function via TASK-3 channels. |
format | Online Article Text |
id | pubmed-8581481 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-85814812021-11-12 Sevoflurane Increases Hippocampal Theta Oscillations and Impairs Memory Via TASK-3 Channels Han, Linlin Zhao, Shuai Xu, Feng Wang, Yafeng Zhou, Ruihui Huang, Shiqian Ding, Yuanyuan Deng, Daling Mao, Weike Chen, Xiangdong Front Pharmacol Pharmacology Sevoflurane can induce memory impairment during clinical anesthesia; however, the underlying mechanisms are largely unknown. TASK-3 channels are one of the potential targets of sevoflurane. Accumulating evidence supports a negative role of intracranial theta rhythms (4–12 Hz) in memory formation. Here, we investigated whether TASK-3 channels contribute to sevoflurane-induced memory impairment by regulating hippocampal theta rhythms. In this study, the memory performance of mice was tested by contextual fear conditioning and inhibitory avoidance experiments. The hippocampal local field potentials (LFPs) were recorded from chronically implanted electrodes located in CA3 region. The results showed that sevoflurane concentration-dependently impaired the memory function of mice, as evidenced by the decreased time mice spent on freezing and reduced latencies for mice to enter the shock compartment. Our electrophysiological results revealed that sevoflurane also enhanced the spectral power of hippocampal LFPs (1–30 Hz), particularly in memory-related theta rhythms (4–12 Hz). These effects were mitigated by viral-mediated knockdown of TASK-3 channels in the hippocampal CA3 region. The knockdown of hippocampal TASK-3 channels significantly reduced the enhancing effect of sevoflurane on hippocampal theta rhythms and alleviated sevoflurane-induced memory impairment. Our data indicate that sevoflurane can increase hippocampal theta oscillations and impair memory function via TASK-3 channels. Frontiers Media S.A. 2021-10-28 /pmc/articles/PMC8581481/ /pubmed/34776954 http://dx.doi.org/10.3389/fphar.2021.728300 Text en Copyright © 2021 Han, Zhao, Xu, Wang, Zhou, Huang, Ding, Deng, Mao and Chen. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Pharmacology Han, Linlin Zhao, Shuai Xu, Feng Wang, Yafeng Zhou, Ruihui Huang, Shiqian Ding, Yuanyuan Deng, Daling Mao, Weike Chen, Xiangdong Sevoflurane Increases Hippocampal Theta Oscillations and Impairs Memory Via TASK-3 Channels |
title | Sevoflurane Increases Hippocampal Theta Oscillations and Impairs Memory Via TASK-3 Channels |
title_full | Sevoflurane Increases Hippocampal Theta Oscillations and Impairs Memory Via TASK-3 Channels |
title_fullStr | Sevoflurane Increases Hippocampal Theta Oscillations and Impairs Memory Via TASK-3 Channels |
title_full_unstemmed | Sevoflurane Increases Hippocampal Theta Oscillations and Impairs Memory Via TASK-3 Channels |
title_short | Sevoflurane Increases Hippocampal Theta Oscillations and Impairs Memory Via TASK-3 Channels |
title_sort | sevoflurane increases hippocampal theta oscillations and impairs memory via task-3 channels |
topic | Pharmacology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8581481/ https://www.ncbi.nlm.nih.gov/pubmed/34776954 http://dx.doi.org/10.3389/fphar.2021.728300 |
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