1
|
Deng L, Song SY, Zhao WM, Meng XW, Liu H, Zheng Q, Peng K, Ji FH. Triggering Receptor Expressed on Myeloid Cells 2 Alleviated Sevoflurane-Induced Developmental Neurotoxicity via Microglial Pruning of Dendritic Spines in the CA1 Region of the Hippocampus. Neurosci Bull 2024:10.1007/s12264-024-01260-9. [PMID: 39078595 DOI: 10.1007/s12264-024-01260-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Accepted: 03/14/2024] [Indexed: 07/31/2024] Open
Abstract
Sevoflurane induces developmental neurotoxicity in mice; however, the underlying mechanisms remain unclear. Triggering receptor expressed on myeloid cells 2 (TREM2) is essential for microglia-mediated synaptic refinement during the early stages of brain development. We explored the effects of TREM2 on dendritic spine pruning during sevoflurane-induced developmental neurotoxicity in mice. Mice were anaesthetized with sevoflurane on postnatal days 6, 8, and 10. Behavioral performance was assessed using the open field test and Morris water maze test. Genetic knockdown of TREM2 and overexpression of TREM2 by stereotaxic injection were used for mechanistic experiments. Western blotting, immunofluorescence, electron microscopy, three-dimensional reconstruction, Golgi staining, and whole-cell patch-clamp recordings were performed. Sevoflurane exposures upregulated the protein expression of TREM2, increased microglia-mediated pruning of dendritic spines, and reduced synaptic multiplicity and excitability of CA1 neurons. TREM2 genetic knockdown significantly decreased dendritic spine pruning, and partially aggravated neuronal morphological abnormalities and cognitive impairments in sevoflurane-treated mice. In contrast, TREM2 overexpression enhanced microglia-mediated pruning of dendritic spines and rescued neuronal morphological abnormalities and cognitive dysfunction. TREM2 exerts a protective role against neurocognitive impairments in mice after neonatal exposures to sevoflurane by enhancing microglia-mediated pruning of dendritic spines in CA1 neurons. This provides a potential therapeutic target in the prevention of sevoflurane-induced developmental neurotoxicity.
Collapse
Affiliation(s)
- Li Deng
- Department of Anaesthesiology, The First Affiliated Hospital of Soochow University, Suzhou, 215006, China
- Institute of Anaesthesiology, Soochow University, Suzhou, 215006, China
| | - Shao-Yong Song
- Department of Anaesthesiology, The First Affiliated Hospital of Soochow University, Suzhou, 215006, China
- Department of Anaesthesiology, Dushu Lake Hospital Affiliated of Soochow University, Suzhou, 215000, China
| | - Wei-Ming Zhao
- Department of Anaesthesiology, The First Affiliated Hospital of Soochow University, Suzhou, 215006, China
- Institute of Anaesthesiology, Soochow University, Suzhou, 215006, China
| | - Xiao-Wen Meng
- Department of Anaesthesiology, The First Affiliated Hospital of Soochow University, Suzhou, 215006, China
- Institute of Anaesthesiology, Soochow University, Suzhou, 215006, China
| | - Hong Liu
- Department of Anaesthesiology and Pain Medicine, University of California Davis Health, Sacramento, CA, USA
| | - Qing Zheng
- Center for Molecular Imaging and Nuclear Medicine, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education, State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Suzhou Medical College of Soochow University, Suzhou, 215006, China
| | - Ke Peng
- Department of Anaesthesiology, The First Affiliated Hospital of Soochow University, Suzhou, 215006, China.
- Institute of Anaesthesiology, Soochow University, Suzhou, 215006, China.
| | - Fu-Hai Ji
- Department of Anaesthesiology, The First Affiliated Hospital of Soochow University, Suzhou, 215006, China.
- Institute of Anaesthesiology, Soochow University, Suzhou, 215006, China.
| |
Collapse
|
2
|
Arzua T, Jiang C, Yan Y, Bai X. The importance of non-coding RNAs in environmental stress-related developmental brain disorders: A systematic review of evidence associated with exposure to alcohol, anesthetic drugs, nicotine, and viral infections. Neurosci Biobehav Rev 2021; 128:633-647. [PMID: 34186153 PMCID: PMC8357057 DOI: 10.1016/j.neubiorev.2021.06.033] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 05/23/2021] [Accepted: 06/23/2021] [Indexed: 12/11/2022]
Abstract
Brain development is a dynamic and lengthy process that includes cell proliferation, migration, neurogenesis, gliogenesis, synaptogenesis, and pruning. Disruption of any of these developmental events can result in long-term outcomes ranging from brain structural changes, to cognitive and behavioral abnormality, with the mechanisms largely unknown. Emerging evidence suggests non-coding RNAs (ncRNAs) as pivotal molecules that participate in normal brain development and neurodevelopmental disorders. NcRNAs such as long non-coding RNAs (lncRNAs) and microRNAs (miRNAs) are transcribed from the genome but not translated into proteins. Many ncRNAs have been implicated as tuners of cell fate. In this review, we started with an introduction of the current knowledge of lncRNAs and miRNAs, and their potential roles in brain development in health and disorders. We then reviewed and discussed the evidence of ncRNA involvement in abnormal brain development resulted from alcohol, anesthetic drugs, nicotine, and viral infections. The complex connections among these ncRNAs were also discussed, along with potential overlapping ncRNA mechanisms, possible pharmacological targets for therapeutic/neuroprotective interventions, and potential biomarkers for brain developmental disorders.
Collapse
Affiliation(s)
- Thiago Arzua
- Department of Cell Biology, Neurobiology & Anatomy, Medical College of Wisconsin, Milwaukee, WI, 53226, USA; Department of Physiology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | - Congshan Jiang
- Department of Anesthesiology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | - Yasheng Yan
- Department of Cell Biology, Neurobiology & Anatomy, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | - Xiaowen Bai
- Department of Cell Biology, Neurobiology & Anatomy, Medical College of Wisconsin, Milwaukee, WI, 53226, USA; Center of Systems Molecular Medicine, Medical College of Wisconsin, Milwaukee, WI, 53226, USA.
| |
Collapse
|
3
|
Sun JY. Anesthesia and Alzheimer's: A review. J Anaesthesiol Clin Pharmacol 2020; 36:297-302. [PMID: 33487895 PMCID: PMC7812964 DOI: 10.4103/joacp.joacp_118_19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 09/21/2019] [Accepted: 10/28/2019] [Indexed: 11/28/2022] Open
Abstract
As early as 1955, it was Bedford who provided description of cognitive changes in elderly patients following anesthesia and surgery. Reports of individuals with catastrophic, non-stroke-related decline in cognitive functions following anesthesia and surgery lead to a perception in the lay population that anesthesia and surgery have the potential to greatly exaggerate the progression of dementia, particularly Alzheimer's disease (AD). There is a concern that anesthesia and surgery could cause irreversible impairment, leading to AD. This could also explain the accelerated decline in patients with mild cognitive impairment. We seek to explore the relevant literature to determine whether a correlation exists and then propose a possible pathophysiologic mechanism.
Collapse
Affiliation(s)
- Jeffrey Y Sun
- NYU Langone Health, Department of Anesthesiology, Perioperative Care and Pain Medicine, New York, New York, USA
| |
Collapse
|