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Cangalaya C, Sun W, Stoyanov S, Dunay IR, Dityatev A. Integrity of neural extracellular matrix is required for microglia-mediated synaptic remodeling. Glia 2024; 72:1874-1892. [PMID: 38946065 DOI: 10.1002/glia.24588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 06/12/2024] [Accepted: 06/18/2024] [Indexed: 07/02/2024]
Abstract
Microglia continuously remodel synapses, which are embedded in the extracellular matrix (ECM). However, the mechanisms, which govern this process remain elusive. To investigate the influence of the neural ECM in synaptic remodeling by microglia, we disrupted ECM integrity by injection of chondroitinase ABC (ChABC) into the retrosplenial cortex of healthy adult mice. Using in vivo two-photon microscopy we found that ChABC treatment increased microglial branching complexity and ECM phagocytic capacity and decreased spine elimination rate under basal conditions. Moreover, ECM attenuation largely prevented synaptic remodeling following synaptic stress induced by photodamage of single synaptic elements. These changes were associated with less stable and smaller microglial contacts at the synaptic damage sites, diminished deposition of calreticulin and complement proteins C1q and C3 at synapses and impaired expression of microglial CR3 receptor. Thus, our findings provide novel insights into the function of the neural ECM in deposition of complement proteins and synaptic remodeling by microglia.
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Affiliation(s)
- Carla Cangalaya
- Molecular Neuroplasticity Group, German Center for Neurodegenerative Diseases (DZNE), Magdeburg, Germany
| | - Weilun Sun
- Molecular Neuroplasticity Group, German Center for Neurodegenerative Diseases (DZNE), Magdeburg, Germany
- Department of Pharmacology, School of Pharmaceutical Sciences, Jilin University, Changchun, China
| | - Stoyan Stoyanov
- Molecular Neuroplasticity Group, German Center for Neurodegenerative Diseases (DZNE), Magdeburg, Germany
| | - Ildiko Rita Dunay
- Institute of Inflammation and Neurodegeneration, Otto von Guericke University Magdeburg, Magdeburg, Germany
- Center for Behavioral Brain Sciences (CBBS), Magdeburg, Germany
| | - Alexander Dityatev
- Molecular Neuroplasticity Group, German Center for Neurodegenerative Diseases (DZNE), Magdeburg, Germany
- Center for Behavioral Brain Sciences (CBBS), Magdeburg, Germany
- Medical Faculty, Otto von Guericke University, Magdeburg, Germany
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Tang S, Hu W, Zou H, Luo Q, Deng W, Cao S. The complement system: a potential target for the comorbidity of chronic pain and depression. Korean J Pain 2024; 37:91-106. [PMID: 38433474 PMCID: PMC10985490 DOI: 10.3344/kjp.23284] [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: 10/10/2023] [Revised: 11/28/2023] [Accepted: 12/16/2023] [Indexed: 03/05/2024] Open
Abstract
The mechanisms of the chronic pain and depression comorbidity have gained significant attention in recent years. The complement system, widely involved in central nervous system diseases and mediating non-specific immune mechanisms in the body, remains incompletely understood in its involvement in the comorbidity mechanisms of chronic pain and depression. This review aims to consolidate the findings from recent studies on the complement system in chronic pain and depression, proposing that it may serve as a promising shared therapeutic target for both conditions. Complement proteins C1q, C3, C5, as well as their cleavage products C3a and C5a, along with the associated receptors C3aR, CR3, and C5aR, are believed to have significant implications in the comorbid mechanism. The primary potential mechanisms encompass the involvement of the complement cascade C1q/C3-CR3 in the activation of microglia and synaptic pruning in the amygdala and hippocampus, the role of complement cascade C3/C3a-C3aR in the interaction between astrocytes and microglia, leading to synaptic pruning, and the C3a-C3aR axis and C5a-C5aR axis to trigger inflammation within the central nervous system. We focus on studies on the role of the complement system in the comorbid mechanisms of chronic pain and depression.
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Affiliation(s)
- Shanshan Tang
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- Department of Pain Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Wen Hu
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- Department of Pain Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Helin Zou
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- Department of Pain Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Qingyang Luo
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- Department of Pain Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Wenwen Deng
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Song Cao
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- Department of Pain Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical University, Zunyi, China
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Xu C, Wang F, Huang Q, Lyu D, Wu C, Cao T, Zhao J, Wang M, Zhou N, Yang W, Chen Y, Wei Z, Xie B, Hong W. Association between overt aggression and anhedonia in patients with major depressive disorder during the acute phase. J Psychiatr Res 2023; 165:41-47. [PMID: 37459777 DOI: 10.1016/j.jpsychires.2023.07.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 07/04/2023] [Accepted: 07/10/2023] [Indexed: 09/03/2023]
Abstract
OBJECTIVE To explore the factors influencing anhedonia at baseline and use them as confounding factors. To further investigate the correlation between overt aggression and anhedonia during the acute phase of major depressive disorder. METHODS In this eight-week prospective study, 384 major depressive disorder patients were recruited from the outpatient section of Shanghai Mental Health Center from May 1, 2017, to October 30, 2018. Standard treatments were performed with escitalopram or venlafaxine for participants. Depressive symptoms, overt aggression, and anhedonia were assessed using the 17-item Hamilton Rating Scale for Depression, Modified Overt Aggression Scale, and Snaith-Hamilton Pleasure Scale at baseline, and in the 4th and 8th weeks. RESULTS Obsessive-compulsive symptoms and the duration of untreated psychosis were positively associated with aggression (P < 0.05). Patients with aggressive behaviour had worse cognitive impairment and severe anhedonia of pleasurable sensory experiences (P < 0.05). For anhedonia, being female (tau_b = -0.23, P = 0.012) was a protective factor, while number of recurrent, melancholic features, current obsessions, previous combination drug therapies, depressive symptoms, and aggressive behaviour were risk factors (P < 0.05). Social anhedonia related to interests/pastimes, and pleasurable sensory experiences were more severe in major depressive disorder patients with aggressive behaviour in the acute phase (P < 0.05). CONCLUSIONS Anhedonia persisted in major depressive disorder patients with aggressive behaviour after standardized treatment during the acute phase. Being female protected the pleasures from social interaction and sensory experience. However, the number of depressive episodes, melancholic features, current obsessive symptoms, previous combination drug therapies, depressive symptoms, and aggressive behaviour was positively associated with anhedonia.
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Affiliation(s)
- Chuchen Xu
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, China.
| | - Fan Wang
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, China. beauty--
| | - Qinte Huang
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, China.
| | - Dongbin Lyu
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, China.
| | - Chenglin Wu
- Shanghai Pudong New Area Mental Health Center, School of Medicine, Tongji University, Shanghai, 200124, China.
| | - Tongdan Cao
- Shanghai Mental Health Center of Huangpu District, Shanghai, 200011, China.
| | - Jie Zhao
- Shanghai Mental Health Center of Huangpu District, Shanghai, 200011, China.
| | - Meiti Wang
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, China.
| | - Ni Zhou
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, China.
| | - Weichieh Yang
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, China.
| | - Yiming Chen
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, China.
| | - Zheyi Wei
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, China.
| | - Bin Xie
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, China; Shanghai Key Laboratory of Psychotic Disorders, Shanghai, 20030, China.
| | - Wu Hong
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, China; Shanghai Key Laboratory of Psychotic Disorders, Shanghai, 20030, China.
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Sierra DP, Tripathi A, Pillai A. Dysregulation of complement system in neuropsychiatric disorders: A mini review. Biomark Neuropsychiatry 2022; 7. [PMID: 37123465 PMCID: PMC10136364 DOI: 10.1016/j.bionps.2022.100056] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Complement system is one of the most important defense mechanisms of the innate immune system. In addition to their roles in immune regulation, complement proteins are also involved in neurodevelopment and adult brain plasticity. Complement dysregulation has been shown in neurodevelopmental disorders including schizophrenia and autism spectrum disorder as well as in mood disorders. A number of clinical as well as genetic studies suggest the role of complement proteins in the cortical thinning and excessive synaptic pruning frequently associated with schizophrenia. The changes in complement proteins are also associated with the pathophysiology of autism spectrum disorder, major depressive disorder and bipolar disorder, but warrant further research. In addition, rodent models suggest a strong case for complement system in anxiety-like behavior. In this article, we review the recent findings on the role of complement system in neuropsychiatric disorders. The possible uses for future complement targeted therapies are also discussed.
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Affiliation(s)
- Danny Perez Sierra
- Pathophysiology of Neuropsychiatric Disorders Program, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA
| | - Ashutosh Tripathi
- Pathophysiology of Neuropsychiatric Disorders Program, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA
| | - Anilkumar Pillai
- Pathophysiology of Neuropsychiatric Disorders Program, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA
- Research and Development, Charlie Norwood VA Medical Center, Augusta, GA, USA
- Department of Psychiatry and Health Behavior, Medical College of Georgia, Augusta University, Augusta, GA, USA
- Correspondence to: Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, USA. (A. Pillai)
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Schulz K, Trendelenburg M. C1q as a target molecule to treat human disease: What do mouse studies teach us? Front Immunol 2022; 13:958273. [PMID: 35990646 PMCID: PMC9385197 DOI: 10.3389/fimmu.2022.958273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 06/24/2022] [Indexed: 11/17/2022] Open
Abstract
The complement system is a field of growing interest for pharmacological intervention. Complement protein C1q, the pattern recognition molecule at the start of the classical pathway of the complement cascade, is a versatile molecule with additional non-canonical actions affecting numerous cellular processes. Based on observations made in patients with hereditary C1q deficiency, C1q is protective against systemic autoimmunity and bacterial infections. Accordingly, C1q deficient mice reproduce this phenotype with susceptibility to autoimmunity and infections. At the same time, beneficial effects of C1q deficiency on disease entities such as neurodegenerative diseases have also been described in murine disease models. This systematic review provides an overview of all currently available literature on the C1q knockout mouse in disease models to identify potential target diseases for treatment strategies focusing on C1q, and discusses potential side-effects when depleting and/or inhibiting C1q.
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Affiliation(s)
- Kristina Schulz
- Laboratory of Clinical Immunology, Department of Biomedicine, University of Basel, Basel, Switzerland
- Division of Internal Medicine, University Hospital Basel, Basel, Switzerland
- *Correspondence: Kristina Schulz,
| | - Marten Trendelenburg
- Laboratory of Clinical Immunology, Department of Biomedicine, University of Basel, Basel, Switzerland
- Division of Internal Medicine, University Hospital Basel, Basel, Switzerland
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