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He L, Duan X, Li S, Zhang R, Dai X, Lu M. Unveiling the role of astrocytes in postoperative cognitive dysfunction. Ageing Res Rev 2024; 95:102223. [PMID: 38325753 DOI: 10.1016/j.arr.2024.102223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 02/02/2024] [Accepted: 02/02/2024] [Indexed: 02/09/2024]
Abstract
Alzheimer's disease (AD) is the most common neurodegenerative disorder, characterized by progressive cognitive decline and the accumulation of amyloid-beta plaques, tau tangles, and neuroinflammation in the brain. Postoperative cognitive dysfunction (POCD) is a prevalent and debilitating condition characterized by cognitive decline following neuroinflammation and oxidative stress induced by procedures. POCD and AD are two conditions that share similarities in the underlying mechanisms and pathophysiology. Compared to normal aging individuals, individuals with POCD are at a higher risk for developing AD. Emerging evidence suggests that astrocytes, the most abundant glial cells in the central nervous system, play a critical role in the pathogenesis of these conditions. Comprehensive functions of astrocyte in AD has been extensively explored, but very little is known about POCD may experience late-onset AD pathogenesis. Herein, in this context, we mainly explore the multifaceted roles of astrocytes in the context of POCD, highlighting their involvement in neuroinflammation, neurotransmitter regulation, synaptic plasticity and neurotrophic support, and discuss how POCD may augment the onset of AD. Additionally, we discuss potential therapeutic strategies targeting astrocytes to mitigate or prevent POCD, which hold promise for improving the quality of life for patients undergoing surgeries and against AD in the future.
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Affiliation(s)
- Liang He
- Department of Anesthesiology, Yan'an Hospital of Kunming City, Kunming 650051, China.
| | - Xiyuan Duan
- Department of Anesthesiology, Yan'an Hospital of Kunming City, Kunming 650051, China
| | - Shikuo Li
- Department of Anesthesiology, Yan'an Hospital of Kunming City, Kunming 650051, China
| | - Ruqiang Zhang
- Department of Anesthesiology, Yan'an Hospital of Kunming City, Kunming 650051, China
| | - Xulei Dai
- Department of Clinical Laboratory Science, Xingtai Medical College, Xingtai 050054, China
| | - Meilin Lu
- Department of Anesthesiology, First Affiliated Hospital of Kunming Medical University, Kunming 650032, China.
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Wang W, Gao W, Gong P, Song W, Bu X, Hou J, Zhang L, Zhao B. Neuronal-specific TNFAIP1 ablation attenuates postoperative cognitive dysfunction via targeting SNAP25 for K48-linked ubiquitination. Cell Commun Signal 2023; 21:356. [PMID: 38102610 PMCID: PMC10722859 DOI: 10.1186/s12964-023-01390-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 11/08/2023] [Indexed: 12/17/2023] Open
Abstract
BACKGROUND Synaptosomal-associated protein 25 (SNAP25) exerts protective effects against postoperative cognitive dysfunction (POCD) by promoting PTEN-induced kinase 1 (PINK1)/Parkin-mediated mitophagy and repressing caspase-3/gasdermin E (GSDME)-mediated pyroptosis. However, the regulatory mechanisms of SNAP25 protein remain unclear. METHODS We employed recombinant adeno-associated virus 9 (AAV9)-hSyn to knockdown tumor necrosis factor α-induced protein 1 (TNFAIP1) or SNAP25 and investigate the role of TNFAIP1 in POCD. Cognitive performance, hippocampal injury, mitophagy, and pyroptosis were assessed. Co-immunoprecipitation (co-IP) and ubiquitination assays were conducted to elucidate the mechanisms by which TNFAIP1 stabilizes SNAP25. RESULTS Our results demonstrated that the ubiquitin ligase TNFAIP1 was upregulated in the hippocampus of mice following isoflurane (Iso) anesthesia and laparotomy. The N-terminal region (residues 1-96) of TNFAIP1 formed a conjugate with SNAP25, leading to lysine (K) 48-linked polyubiquitination of SNAP25 at K69. Silencing TNFAIP1 enhanced SH-SY5Y cell viability and conferred antioxidant, pro-mitophagy, and anti-pyroptosis properties in response to Iso and lipopolysaccharide (LPS) challenges. Conversely, TNFAIP1 overexpression reduced HT22 cell viability, increased reactive oxygen species (ROS) accumulation, impaired PINK1/Parkin-dependent mitophagy, and induced caspase-3/GSDME-dependent pyroptosis by suppressing SNAP25 expression. Neuron-specific knockdown of TNFAIP1 ameliorated POCD, restored mitophagy, and reduced pyroptosis, which was reversed by SNAP25 depletion. CONCLUSIONS In summary, our findings demonstrated that inhibiting TNFAIP1-mediated degradation of SNAP25 might be a promising therapeutic approach for mitigating postoperative cognitive decline. Video Abstract.
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Affiliation(s)
- Wei Wang
- Department of Anesthesiology, Renmin Hospital of Wuhan University, No.238 Jiefang Road, Wuhan, 430060, China
| | - Wenwei Gao
- Department of Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Ping Gong
- Department of Anesthesiology, Renmin Hospital of Wuhan University, No.238 Jiefang Road, Wuhan, 430060, China
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, Department of Anesthesiology, School & Hospital of Stomatology, Wuhan University, Wuhan, 430079, China
| | - Wenqin Song
- Department of Anesthesiology, Renmin Hospital of Wuhan University, No.238 Jiefang Road, Wuhan, 430060, China
| | - Xueshan Bu
- Department of Anesthesiology, Renmin Hospital of Wuhan University, No.238 Jiefang Road, Wuhan, 430060, China
| | - Jiabao Hou
- Department of Anesthesiology, Renmin Hospital of Wuhan University, No.238 Jiefang Road, Wuhan, 430060, China
| | - Lei Zhang
- Department of Anesthesiology, Renmin Hospital of Wuhan University, No.238 Jiefang Road, Wuhan, 430060, China.
| | - Bo Zhao
- Department of Anesthesiology, Renmin Hospital of Wuhan University, No.238 Jiefang Road, Wuhan, 430060, China.
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Qi Z, Yu Y, Su Y, Cao B, Shao H, Yang JJ. M1-Type Microglia-Derived Extracellular Vesicles Overexpressing IL-1R1 Promote Postoperative Cognitive Dysfunction by Regulating Neuronal Inflammation. Inflammation 2023; 46:2254-2269. [PMID: 37505422 DOI: 10.1007/s10753-023-01875-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 06/30/2023] [Accepted: 07/10/2023] [Indexed: 07/29/2023]
Abstract
Postoperative cognitive dysfunction (POCD) is a common complication after surgical anesthesia, mainly manifested as memory impairment, decreased attention, and cognitive function with mood and personality changes. Activated microglia (M1-type microglia) have been demonstrated to release inflammatory substances (IL-1β, TNF-α, etc.) that cause neuronal degeneration and death by activating the NF-κB signaling pathway and upregulating Caspase-3 and Bax. However, the pathogenesis of POCD is still not fully understood and needs further research. In the present study, we investigated the effect of M1-type microglia-derived extracellular vesicles (EVsM1-Microglia) in the pathological process of POCD. The levels of NF-κB phosphorylation and IL-1β protein expression in hippocampal neurons were significantly increased in the Surgery group, while PSD95 and MAP2 were significantly decreased. Surgery induced microglia activation, synapse-associated protein decrease, and neuronal degeneration in hippocampus. And the amount of spine and mushroom spine significantly decreased in surgical mice, which was reverted in the presence of IL-1R1 siRNA. In addition, EVsM1-Microglia promoted synaptic loss and neuron degeneration independent of surgery and microglia activation. Furthermore, EVsM1-Microglia promoted memory defects in surgical mice. We demonstrated that EVsM1-Microglia with high expression of IL-1R1 promote POCD development by regulating neuronal inflammation.
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Affiliation(s)
- Zheng Qi
- Department of Anesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe Dong Road, Zhengzhou, 450000, People's Republic of China
- Henan Province International Joint Laboratory of Pain, Cognition and Emotion, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe Dong Road, Zhengzhou, 450000, People's Republic of China
| | - Yang Yu
- Department of Anesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe Dong Road, Zhengzhou, 450000, People's Republic of China
- Henan Province International Joint Laboratory of Pain, Cognition and Emotion, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe Dong Road, Zhengzhou, 450000, People's Republic of China
| | - Yu Su
- Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, People's Republic of China
| | - Bin Cao
- Department of Anesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe Dong Road, Zhengzhou, 450000, People's Republic of China
- Henan Province International Joint Laboratory of Pain, Cognition and Emotion, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe Dong Road, Zhengzhou, 450000, People's Republic of China
| | - Hua Shao
- Department of Anesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe Dong Road, Zhengzhou, 450000, People's Republic of China
- Henan Province International Joint Laboratory of Pain, Cognition and Emotion, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe Dong Road, Zhengzhou, 450000, People's Republic of China
| | - Jian-Jun Yang
- Department of Anesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe Dong Road, Zhengzhou, 450000, People's Republic of China.
- Henan Province International Joint Laboratory of Pain, Cognition and Emotion, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe Dong Road, Zhengzhou, 450000, People's Republic of China.
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Qian G, Wang Y. Serum Metabolomics of Early Postoperative Cognitive Dysfunction in Elderly Patients Using Liquid Chromatography and Q-TOF Mass Spectrometry. Oxid Med Cell Longev 2020; 2020:8957541. [PMID: 32082482 PMCID: PMC7007934 DOI: 10.1155/2020/8957541] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 12/13/2019] [Accepted: 12/30/2019] [Indexed: 01/10/2023]
Abstract
Postoperative cognitive dysfunction (POCD) is a common postoperative complication observed in elderly patients. However, the diagnosis of POCD is not very satisfactory as no specific biomarkers have been classified. It is necessary to identify new diagnostic markers to better understand the pathogenesis of POCD. We performed liquid chromatography with a time-of-flight mass spectrometer- (LC/Q-TOF-MS-) based metabolomics study to investigate POCD. A total of 40 metabolites were differentially expressed between POCD and non-POCD patients. In this study, we investigated whether phosphatidylserine (PS) (17:2/0:0), with an area under the curve value of 0.966, was a potential sensitive and specific biomarker for the diagnosis and prognosis of POCD. Pathway analysis showed that fatty acid metabolism, lipid metabolism, and carnitine metabolism were significantly altered in POCD. Network analysis indicated that nitric oxide signaling, PI3K-AKT signaling, mTOR signaling, and mitochondrial dysfunction were related to the pathogenesis of POCD. This study showed that metabolic profiling was meaningful when studying the diagnosis and pathogenesis of POCD.
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Affiliation(s)
- Gang Qian
- Department of Anesthesiology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan 250014, China
- Department of Anesthesiology, Tongren Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai 200336, China
| | - YueLan Wang
- Department of Anesthesiology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan 250014, China
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