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Bao X, Qi C, Liu T, Zheng X. Information transmission in mPFC-BLA network during exploratory behavior in the open field. Behav Brain Res 2021; 414:113483. [PMID: 34302874 DOI: 10.1016/j.bbr.2021.113483] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Revised: 07/18/2021] [Accepted: 07/19/2021] [Indexed: 12/30/2022]
Abstract
Exploratory behavior plays a fundamental role in motivation, learning, and well-being of organisms. The open field test (OFT) is a classic method to investigate the exploratory behavior in rodents, also a widely adopted and pharmacologically validated procedure for evaluating anxiety and depression. Several lines of evidence have shown that medial prefrontal cortex (mPFC) and basolateral amygdala (BLA) play crucial roles in anxiety-like or depression-like exploratory behavior. However, the dynamic characterization of the mPFC-BLA network in exploratory behavior is less well understood. Therefore, this study aimed to investigate the information transmission mechanism in the mPFC-BLA network during exploratory behavior. Local field potentials (LFPs) from mPFC and BLA were simultaneously recorded while the rats performed the OFT. Directed transfer function (DTF), which was derived from Granger causal connectivity analysis, was applied to measure the functional connectivity among LFPs. Information flow (IF) was calculated to explore the dynamics of information transmission in the mPFC-BLA network. Our results revealed that, for both mPFC and BLA, the theta-band functional connectivity in periphery was significantly higher than that in center of the open field. The IF from BLA to mPFC in the open field task was significantly higher than that from mPFC to BLA. These results suggest that the functional connectivity and IF in the mPFC-BLA network are related to the exploratory behavior, and information transmission from BLA to mPFC could be predominant for exploratory behavior.
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Affiliation(s)
- Xuehui Bao
- School of Biomedical Engineering and Technology, Tianjin Medical University, Tianjin, 300070, China
| | - Chengxi Qi
- School of Biomedical Engineering and Technology, Tianjin Medical University, Tianjin, 300070, China
| | - Tiaotiao Liu
- School of Biomedical Engineering and Technology, Tianjin Medical University, Tianjin, 300070, China
| | - Xuyuan Zheng
- School of Biomedical Engineering and Technology, Tianjin Medical University, Tianjin, 300070, China.
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Yang N, Li Z, Han D, Mi X, Tian M, Liu T, Li Y, He J, Kuang C, Cao Y, Li L, Ni C, Wang JQ, Guo X. Autophagy prevents hippocampal α-synuclein oligomerization and early cognitive dysfunction after anesthesia/surgery in aged rats. Aging (Albany NY) 2020; 12:7262-7281. [PMID: 32335546 PMCID: PMC7202547 DOI: 10.18632/aging.103074] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 03/29/2020] [Indexed: 12/13/2022]
Abstract
Stress-induced α-synuclein aggregation, especially the most toxic species (oligomers), may precede synaptic and cognitive dysfunction. Under pathological conditions, α-synuclein is degraded primarily through the autophagic/lysosomal pathway. We assessed the involvement of autophagy in α-synuclein aggregation and cognitive impairment following general anesthesia and surgical stress. Autophagy was found to be suppressed in the aged rat hippocampus after either 4-h propofol anesthesia alone or 2-h propofol anesthesia during a laparotomy surgery. This inhibition of autophagy was accompanied by profound α-synuclein oligomer aggregation and neurotransmitter imbalances in the hippocampus, along with hippocampus-dependent cognitive deficits. These events were not observed 18 weeks after propofol exposure with or without surgical stress. The pharmacological induction of autophagy using rapamycin markedly suppressed α-synuclein oligomerization, restored neurotransmitter equilibrium, and improved cognitive behavior after prolonged anesthesia or anesthesia combined with surgery. Thus, both prolonged propofol anesthesia alone and propofol anesthesia during surgery impaired autophagy, which may have induced abnormal hippocampal α-synuclein aggregation and neurobehavioral deficits in aged rats. These findings suggest that the activation of autophagy and the clearance of pathological α-synuclein oligomers may be novel strategies to ameliorate the common occurrence of postoperative cognitive dysfunction.
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Affiliation(s)
- Ning Yang
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Zhengqian Li
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Dengyang Han
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Xinning Mi
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Miao Tian
- Chinese Traditional and Herbal Drugs Editorial Office, Tianjin Institute of Pharmaceutical Research, Tianjin 300193, China
| | - Taotao Liu
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Yue Li
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Jindan He
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Chongshen Kuang
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Yiyun Cao
- Department of Anesthesiology, Shanghai Sixth People's Hospital East Affiliated with Shanghai University of Medicine and Health Sciences, Shanghai 200233, China
| | - Lunxu Li
- Department of Anesthesiology, Peking University International Hospital, Beijing 102200, China
| | - Cheng Ni
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - John Q Wang
- Department of Anesthesiology, University of Missouri Kansas City, School of Medicine, Kansas, MO 64110, USA
| | - Xiangyang Guo
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
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Cascella M, Schiavone V, Muzio MR, Cuomo A. Consciousness fluctuation during general anesthesia: a theoretical approach to anesthesia awareness and memory modulation. Curr Med Res Opin 2016; 32:1351-9. [PMID: 27046232 DOI: 10.1080/03007995.2016.1174679] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
With anesthesia awareness as a model of study we debate the both fascinating and dangerous phenomenon called consciousness fluctuation that takes place during surgical anesthesia. In accordance with current scientific knowledge this paradox is the consequence of our limits in both precise knowledge of anesthesia mechanisms and our inability to accurately assess the level of anesthesia with brain monitoring. We also focus on the relationships between memory and anesthesia, as well as the possibility of interfering with memory during general anesthesia.
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Affiliation(s)
- Marco Cascella
- a Division of Anesthesia, Department of Anesthesia, Endoscopy and Cardiology , Istituto Nazionale Tumori "Fondazione G. Pascale" - IRCCS , Naples , Italy
| | - Vincenzo Schiavone
- b Division of Anesthesia and Intensive Care , Hospital "Pineta Grande" , Castel Volturno , Italy
| | - Maria Rosaria Muzio
- c Division of Infantile Neuropsychiatry , UOMI - Maternal and Infant Health , Torre del Greco , Naples , Italy
| | - Arturo Cuomo
- a Division of Anesthesia, Department of Anesthesia, Endoscopy and Cardiology , Istituto Nazionale Tumori "Fondazione G. Pascale" - IRCCS , Naples , Italy
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Zhang D, Zhao H, Bai W, Tian X. Functional connectivity among multi-channel EEGs when working memory load reaches the capacity. Brain Res 2016; 1631:101-12. [DOI: 10.1016/j.brainres.2015.11.036] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2015] [Revised: 10/14/2015] [Accepted: 11/22/2015] [Indexed: 10/22/2022]
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Liu T, Bai W, Wang J, Tian X. An aberrant link between gamma oscillation and functional connectivity in Aβ1–42-mediated memory deficits in rats. Behav Brain Res 2016; 297:51-8. [DOI: 10.1016/j.bbr.2015.10.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Revised: 09/30/2015] [Accepted: 10/03/2015] [Indexed: 02/02/2023]
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Yi H, Zhang X, Bai W, Liu T, Tian X. Canonical correlation between LFP network and spike network during working memory task in rat. Behav Brain Res 2015; 289:84-91. [DOI: 10.1016/j.bbr.2015.04.042] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Revised: 04/18/2015] [Accepted: 04/23/2015] [Indexed: 11/28/2022]
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Cavalcanti V, Santos CL, Samary CS, Araújo MN, Heil LBB, Morales MM, Silva PL, Pelosi P, Fernandes FC, Villela N, Rocco PRM. Effects of short-term propofol and dexmedetomidine on pulmonary morphofunction and biological markers in experimental mild acute lung injury. Respir Physiol Neurobiol 2014; 203:45-50. [DOI: 10.1016/j.resp.2014.08.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Revised: 08/03/2014] [Accepted: 08/12/2014] [Indexed: 11/30/2022]
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Du A, Jiang H, Xu L, An N, Liu H, Li Y, Zhang R. Damage of hippocampal neurons in rats with chronic alcoholism. Neural Regen Res 2014; 9:1610-5. [PMID: 25368648 PMCID: PMC4211203 DOI: 10.4103/1673-5374.141787] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/10/2014] [Indexed: 01/08/2023] Open
Abstract
Chronic alcoholism can damage the cytoskeleton and aggravate neurological deficits. However, the effect of chronic alcoholism on hippocampal neurons remains unclear. In this study, a model of chronic alcoholism was established in rats that were fed with 6% alcohol for 42 days. Endogenous hydrogen sulfide content and cystathionine-beta-synthase activity in the hippocampus of rats with chronic alcoholism were significantly increased, while F-actin expression was decreased. Hippocampal neurons in rats with chronic alcoholism appeared to have a fuzzy nuclear membrane, mitochondrial edema, and ruptured mitochondrial crista. These findings suggest that chronic alcoholism can cause learning and memory decline in rats, which may be associated with the hydrogen sulfide/cystathionine-beta-synthase system, mitochondrial damage and reduced expression of F-actin.
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Affiliation(s)
- Ailin Du
- Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan Province, China ; Department of Physiology and Neurobiology, Xinxiang Medical University, Xinxiang, Henan Province, China
| | - Hongbo Jiang
- Department of Physiology and Neurobiology, Xinxiang Medical University, Xinxiang, Henan Province, China ; Department of Neurology, the Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan Province, China
| | - Lei Xu
- Department of Physiology and Neurobiology, Xinxiang Medical University, Xinxiang, Henan Province, China
| | - Na An
- Department of Physiology and Neurobiology, Xinxiang Medical University, Xinxiang, Henan Province, China
| | - Hui Liu
- Department of Physiology and Neurobiology, Xinxiang Medical University, Xinxiang, Henan Province, China ; Department of Neurology, the Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan Province, China
| | - Yinsheng Li
- Department of Physiology and Neurobiology, Xinxiang Medical University, Xinxiang, Henan Province, China
| | - Ruiling Zhang
- Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan Province, China ; Department of Physiology and Neurobiology, Xinxiang Medical University, Xinxiang, Henan Province, China ; Henan Provincial Key Laboratory of Bio-psychiatry, Xinxiang, Henan Province, China
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