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Dynamic Variations in Brain Glycogen are Involved in Modulating Isoflurane Anesthesia in Mice

General anesthesia severely affects the metabolites in the brain. Glycogen, principally stored in astrocytes and providing the short-term delivery of substrates to neurons, has been implicated as an affected molecule. However, whether glycogen plays a pivotal role in modulating anesthesia–arousal re...

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Autores principales: Fan, Ze, Zhang, Zhihao, Zhao, Shiyi, Zhu, Yuanyuan, Guo, Dong, Yang, Bo, Zhuo, Lixia, Han, Jiao, Wang, Rui, Fang, Zongping, Dong, Hailong, Li, Yan, Xiong, Lize
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Singapore 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7719152/
https://www.ncbi.nlm.nih.gov/pubmed/33048310
http://dx.doi.org/10.1007/s12264-020-00587-3
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author Fan, Ze
Zhang, Zhihao
Zhao, Shiyi
Zhu, Yuanyuan
Guo, Dong
Yang, Bo
Zhuo, Lixia
Han, Jiao
Wang, Rui
Fang, Zongping
Dong, Hailong
Li, Yan
Xiong, Lize
author_facet Fan, Ze
Zhang, Zhihao
Zhao, Shiyi
Zhu, Yuanyuan
Guo, Dong
Yang, Bo
Zhuo, Lixia
Han, Jiao
Wang, Rui
Fang, Zongping
Dong, Hailong
Li, Yan
Xiong, Lize
author_sort Fan, Ze
collection PubMed
description General anesthesia severely affects the metabolites in the brain. Glycogen, principally stored in astrocytes and providing the short-term delivery of substrates to neurons, has been implicated as an affected molecule. However, whether glycogen plays a pivotal role in modulating anesthesia–arousal remains unclear. Here, we demonstrated that isoflurane-anesthetized mice exhibited dynamic changes in the glycogen levels in various brain regions. Glycogen synthase (GS) and glycogen phosphorylase (GP), key enzymes of glycogen metabolism, showed increased activity after isoflurane exposure. Upon blocking glycogenolysis with 1,4-dideoxy-1,4-imino-D-arabinitol (DAB), a GP antagonist, we found a prolonged time of emergence from anesthesia and an enhanced δ frequency in the EEG (electroencephalogram). In addition, augmented expression of glycogenolysis genes in glycogen phosphorylase, brain (Pygb) knock-in (Pygb(H11/H11)) mice resulted in delayed induction of anesthesia, a shortened emergence time, and a lower ratio of EEG-δ. Our findings revealed a role of brain glycogen in regulating anesthesia–arousal, providing a potential target for modulating anesthesia. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1007/s12264-020-00587-3) contains supplementary material, which is available to authorized users.
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spelling pubmed-77191522020-12-07 Dynamic Variations in Brain Glycogen are Involved in Modulating Isoflurane Anesthesia in Mice Fan, Ze Zhang, Zhihao Zhao, Shiyi Zhu, Yuanyuan Guo, Dong Yang, Bo Zhuo, Lixia Han, Jiao Wang, Rui Fang, Zongping Dong, Hailong Li, Yan Xiong, Lize Neurosci Bull Original Article General anesthesia severely affects the metabolites in the brain. Glycogen, principally stored in astrocytes and providing the short-term delivery of substrates to neurons, has been implicated as an affected molecule. However, whether glycogen plays a pivotal role in modulating anesthesia–arousal remains unclear. Here, we demonstrated that isoflurane-anesthetized mice exhibited dynamic changes in the glycogen levels in various brain regions. Glycogen synthase (GS) and glycogen phosphorylase (GP), key enzymes of glycogen metabolism, showed increased activity after isoflurane exposure. Upon blocking glycogenolysis with 1,4-dideoxy-1,4-imino-D-arabinitol (DAB), a GP antagonist, we found a prolonged time of emergence from anesthesia and an enhanced δ frequency in the EEG (electroencephalogram). In addition, augmented expression of glycogenolysis genes in glycogen phosphorylase, brain (Pygb) knock-in (Pygb(H11/H11)) mice resulted in delayed induction of anesthesia, a shortened emergence time, and a lower ratio of EEG-δ. Our findings revealed a role of brain glycogen in regulating anesthesia–arousal, providing a potential target for modulating anesthesia. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1007/s12264-020-00587-3) contains supplementary material, which is available to authorized users. Springer Singapore 2020-10-13 /pmc/articles/PMC7719152/ /pubmed/33048310 http://dx.doi.org/10.1007/s12264-020-00587-3 Text en © The Author(s) 2020 Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Original Article
Fan, Ze
Zhang, Zhihao
Zhao, Shiyi
Zhu, Yuanyuan
Guo, Dong
Yang, Bo
Zhuo, Lixia
Han, Jiao
Wang, Rui
Fang, Zongping
Dong, Hailong
Li, Yan
Xiong, Lize
Dynamic Variations in Brain Glycogen are Involved in Modulating Isoflurane Anesthesia in Mice
title Dynamic Variations in Brain Glycogen are Involved in Modulating Isoflurane Anesthesia in Mice
title_full Dynamic Variations in Brain Glycogen are Involved in Modulating Isoflurane Anesthesia in Mice
title_fullStr Dynamic Variations in Brain Glycogen are Involved in Modulating Isoflurane Anesthesia in Mice
title_full_unstemmed Dynamic Variations in Brain Glycogen are Involved in Modulating Isoflurane Anesthesia in Mice
title_short Dynamic Variations in Brain Glycogen are Involved in Modulating Isoflurane Anesthesia in Mice
title_sort dynamic variations in brain glycogen are involved in modulating isoflurane anesthesia in mice
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7719152/
https://www.ncbi.nlm.nih.gov/pubmed/33048310
http://dx.doi.org/10.1007/s12264-020-00587-3
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