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Lee J, Huh S, Park K, Kang N, Yu HS, Park HG, Kim YS, Kang UG, Won S, Kim SH. Behavioral and transcriptional effects of repeated electroconvulsive seizures in the neonatal MK-801-treated rat model of schizophrenia. Psychopharmacology (Berl) 2024; 241:817-832. [PMID: 38081977 DOI: 10.1007/s00213-023-06511-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 11/23/2023] [Indexed: 03/13/2024]
Abstract
RATIONALE Electroconvulsive therapy (ECT) is an effective treatment modality for schizophrenia. However, its antipsychotic-like mechanism remains unclear. OBJECTIVES To gain insight into the antipsychotic-like actions of ECT, this study investigated how repeated treatments of electroconvulsive seizure (ECS), an animal model for ECT, affect the behavioral and transcriptomic profile of a neurodevelopmental animal model of schizophrenia. METHODS Two injections of MK-801 or saline were administered to rats on postnatal day 7 (PN7), and either repeated ECS treatments (E10X) or sham shock was conducted daily from PN50 to PN59. Ultimately, the rats were divided into vehicle/sham (V/S), MK-801/sham (M/S), vehicle/ECS (V/E), and MK-801/ECS (M/E) groups. On PN59, prepulse inhibition and locomotor activity were tested. Prefrontal cortex transcriptomes were analyzed with mRNA sequencing and network and pathway analyses, and quantitative real-time polymerase chain reaction (qPCR) analyses were subsequently conducted. RESULTS Prepulse inhibition deficit was induced by MK-801 and normalized by E10X. In M/S vs. M/E model, Egr1, Mmp9, and S100a6 were identified as center genes, and interleukin-17 (IL-17), nuclear factor kappa B (NF-κB), and tumor necrosis factor (TNF) signaling pathways were identified as the three most relevant pathways. In the V/E vs. V/S model, mitophagy, NF-κB, and receptor for advanced glycation end products (RAGE) pathways were identified. qPCR analyses demonstrated that Igfbp6, Btf3, Cox6a2, and H2az1 were downregulated in M/S and upregulated in M/E. CONCLUSIONS E10X reverses the behavioral changes induced by MK-801 and produces transcriptional changes in inflammatory, insulin, and mitophagy pathways, which provide mechanistic insight into the antipsychotic-like mechanism of ECT.
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Affiliation(s)
- Jeonghoon Lee
- Department of Psychiatry, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Seonghoo Huh
- Biomedical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea
| | - Kyungtaek Park
- Institute of Health and Environment, Seoul National University, Seoul, Republic of Korea
| | - Nuree Kang
- Department of Psychiatry, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Hyun Sook Yu
- Biomedical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea
| | - Hong Geun Park
- Biomedical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea
| | - Yong Sik Kim
- Department of Psychiatry, Nowon Eulji Medical Center, Eulji University, Seoul, Republic of Korea
| | - Ung Gu Kang
- Department of Psychiatry, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
- Institute of Human Behavioral Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Sungho Won
- Institute of Health and Environment, Seoul National University, Seoul, Republic of Korea
- Interdisciplinary Program of Bioinformatics, College of Natural Sciences, Seoul National University, Seoul, Republic of Korea
- Department of Public Health Sciences, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
- RexSoft Inc., Seoul, Republic of Korea
| | - Se Hyun Kim
- Department of Psychiatry, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea.
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Alarcón TA, Presti-Silva SM, Simões APT, Ribeiro FM, Pires RGW. Molecular mechanisms underlying the neuroprotection of environmental enrichment in Parkinson's disease. Neural Regen Res 2023; 18:1450-1456. [PMID: 36571341 PMCID: PMC10075132 DOI: 10.4103/1673-5374.360264] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Parkinson's disease is the most common movement disorder, affecting about 1% of the population over the age of 60 years. Parkinson's disease is characterized clinically by resting tremor, bradykinesia, rigidity and postural instability, as a result of the progressive loss of nigrostriatal dopaminergic neurons. In addition to this neuronal cell loss, Parkinson's disease is characterized by the accumulation of intracellular protein aggregates, Lewy bodies and Lewy neurites, composed primarily of the protein α-synuclein. Although it was first described almost 200 years ago, there are no disease-modifying drugs to treat patients with Parkinson's disease. In addition to conventional therapies, non-pharmacological treatment strategies are under investigation in patients and animal models of neurodegenerative disorders. Among such strategies, environmental enrichment, comprising physical exercise, cognitive stimulus, and social interactions, has been assessed in preclinical models of Parkinson's disease. Environmental enrichment can cause structural and functional changes in the brain and promote neurogenesis and dendritic growth by modifying gene expression, enhancing the expression of neurotrophic factors and modulating neurotransmission. In this review article, we focus on the current knowledge about the molecular mechanisms underlying environmental enrichment neuroprotection in Parkinson's disease, highlighting its influence on the dopaminergic, cholinergic, glutamatergic and GABAergic systems, as well as the involvement of neurotrophic factors. We describe experimental pre-clinical data showing how environmental enrichment can act as a modulator in a neurochemical and behavioral context in different animal models of Parkinson's disease, highlighting the potential of environmental enrichment as an additional strategy in the management and prevention of this complex disease.
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Affiliation(s)
- Tamara Andrea Alarcón
- Department of Physiological Sciences; Laboratory of Molecular and Behavioral Neurobiology, Health Science Center, Universidade Federal do Espirito Santo, Vitoria, Brazil
| | - Sarah Martins Presti-Silva
- Laboratory of Molecular and Behavioral Neurobiology, Health Science Center, Universidade Federal do Espirito Santo, Vitoria; Department of Biochemistry and Immunology, Institute o Biological Sciences, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, Belo Horizonte, Brazil
| | - Ana Paula Toniato Simões
- Department of Physiological Sciences; Laboratory of Molecular and Behavioral Neurobiology, Health Science Center, Universidade Federal do Espirito Santo, Vitoria, Brazil
| | - Fabiola Mara Ribeiro
- Department of Biochemistry and Immunology, Institute o Biological Sciences, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, Belo Horizonte, Brazil
| | - Rita Gomes Wanderley Pires
- Department of Physiological Sciences; Laboratory of Molecular and Behavioral Neurobiology, Health Science Center, Universidade Federal do Espirito Santo, Vitoria, Brazil
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Song J, Liang Y, Xu Z, Wu Y, Yan S, Mei L, Sun X, Li Y, Jin X, Yi W, Pan R, Cheng J, Hu W, Su H. Built environment and schizophrenia re-hospitalization risk in China: A cohort study. ENVIRONMENTAL RESEARCH 2023; 227:115816. [PMID: 37003555 DOI: 10.1016/j.envres.2023.115816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 03/13/2023] [Accepted: 03/30/2023] [Indexed: 05/08/2023]
Abstract
BACKGROUND Built environment exposure, characterized by ubiquity and changeability, has the potential to be the prospective target of public health policy. However, little research has been conducted to explore its impact on schizophrenia. This study aimed to investigate the association between built environmentand and schizophrenia rehospitalization by simultaneously considering substantial built environmental exposures. METHODS We recruited eligible schizophrenia patients from Hefei, Anhui Province, China between 2017 and 2019. The main outcome for this study was the time interval until the first recurrent hospital admission occurred within one year after discharge. For each included subject, we estimated the built environment exposures, including population density, walkability, land use mix, green and blue space, public transportation accessibility and road traffic indicator. Lasso (Least Absolute Shrinkage and Selection Operator) analysis was used to select the key variables. Multivariable Cox regression model was applied to obtain hazard ratio (HR) and its corresponding 95% confidence intervals (CI). Further, we also evaluated the joint effects of built environment characteristics on rehospitalization for schizophrenia by Quantile g-computation model. RESULTS A total of 1564 hospitalized schizophrenia patients were enrolled, with 347 patients (22.2%) had a rehospitalization within one-year after discharge. Multivariable Cox regression analysis indicated that the re-hospitalization rate for schizophrenia would be higher in areas with a high population density (HR: 1.10, 95%CI: 1.04-1.16). Nonetheless, compared to the reference (Q1), participants who lived in a neighborhood with the highest walkability and NDVI (Normalized Difference Vegetation Index) (Q4) had a 76% and 47% lower risk of re-hospitalization within one year (HR:0.24, 95%CI: 0.13-0.45; and 0.53, 95%CI:0.32-0.85), respectively. Moreover, quantile-based g-computation analyses revealed that increased walkability and green space significantly eliminated the adverse effects of population density increases on schizophrenia patients, with a HR ratio of 0.61 (95%CI:0.48,0.79) per one quartile change at the same time. CONCLUSION Our study provides scientific evidence for the significant role of built environment in schizophrenia rehospitalization, suggesting that optimizing the built environment is required in designing and building a healthy city.
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Affiliation(s)
- Jian Song
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, No.81 Meishan Road, Shushan District, Hefei, Anhui, 230031, China; Ecosystem Change and Population Health Research Group, School of Public Health and Social Work, Queensland University of Technology, Australia
| | - Yunfeng Liang
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, No.81 Meishan Road, Shushan District, Hefei, Anhui, 230031, China
| | - Zhiwei Xu
- School of Medicine and Dentistry, Gold Coast Campus, Griffith University, QLD, 4222, Australia
| | - Yudong Wu
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, No.81 Meishan Road, Shushan District, Hefei, Anhui, 230031, China
| | - Shuangshuang Yan
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, No.81 Meishan Road, Shushan District, Hefei, Anhui, 230031, China
| | - Lu Mei
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, No.81 Meishan Road, Shushan District, Hefei, Anhui, 230031, China
| | - Xiaoni Sun
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, No.81 Meishan Road, Shushan District, Hefei, Anhui, 230031, China
| | - Yuxuan Li
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, No.81 Meishan Road, Shushan District, Hefei, Anhui, 230031, China
| | - Xiaoyu Jin
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, No.81 Meishan Road, Shushan District, Hefei, Anhui, 230031, China
| | - Weizhuo Yi
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, No.81 Meishan Road, Shushan District, Hefei, Anhui, 230031, China
| | - Rubing Pan
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, No.81 Meishan Road, Shushan District, Hefei, Anhui, 230031, China
| | - Jian Cheng
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, No.81 Meishan Road, Shushan District, Hefei, Anhui, 230031, China
| | - Wenbiao Hu
- Ecosystem Change and Population Health Research Group, School of Public Health and Social Work, Queensland University of Technology, Australia.
| | - Hong Su
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, No.81 Meishan Road, Shushan District, Hefei, Anhui, 230031, China.
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Vaquero-Rodríguez A, Ortuzar N, Lafuente JV, Bengoetxea H. Enriched environment as a nonpharmacological neuroprotective strategy. Exp Biol Med (Maywood) 2023; 248:553-560. [PMID: 37309729 PMCID: PMC10350798 DOI: 10.1177/15353702231171915] [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] [Indexed: 06/14/2023] Open
Abstract
The structure and functions of the central nervous system are influenced by environmental stimuli, which also play an important role in brain diseases. Enriched environment (EE) consists of producing modifications in the environment of standard laboratory animals to induce an improvement in their biological conditions. This paradigm promotes transcriptional and translational effects that result in ameliorated motor, sensory, and cognitive stimulation. EE has been shown to enhance experience-dependent cellular plasticity and cognitive performance in animals housed under these conditions compared with animals housed under standard conditions. In addition, several studies claim that EE induces nerve repair by restoring functional activities through morphological, cellular, and molecular adaptations in the brain that have clinical relevance in neurological and psychiatric disorders. In fact, the effects of EE have been studied in different animal models of psychiatric and neurological diseases, such as Alzheimer's disease, Parkinson's disease, schizophrenia, ischemic brain injury, or traumatic brain injury, delaying the onset and progression of a wide variety of symptoms of these disorders. In this review, we analyze the action of EE focused on diseases of the central nervous system and the translation to humans to develop a bridge to its application.
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Affiliation(s)
- Andrea Vaquero-Rodríguez
- Department of Neurosciences, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain
- Neurodegenerative Diseases Group, Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain
| | - Naiara Ortuzar
- Department of Neurosciences, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain
- Neurodegenerative Diseases Group, Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain
| | - José Vicente Lafuente
- Department of Neurosciences, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain
- Neurodegenerative Diseases Group, Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain
| | - Harkaitz Bengoetxea
- Department of Neurosciences, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain
- Neurodegenerative Diseases Group, Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain
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Xu J, Li Y, Tian B, Liu H, Wu S, Wang W. The effects and mechanism of environmental enrichment on MK-801 induced cognitive impairment in rodents with schizophrenia. Front Cell Neurosci 2022; 16:1024649. [PMID: 36246525 PMCID: PMC9556631 DOI: 10.3389/fncel.2022.1024649] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 09/13/2022] [Indexed: 12/02/2022] Open
Abstract
Schizophrenia is a severe mental disorder characterized by positive, negative, and cognitive symptoms. Cognitive symptoms are a kind of symptoms with high incidence and great impact on patients. There is no effective treatment in clinical practice. N-methyl-d-aspartic acid (NMDA) receptor hypofunction may be an important cause of cognitive symptoms. MK-801 (also named Dizocilpine), a noncompetitive antagonist of NMDA receptor, is often used to construct a model of NMDA receptor dysfunction. In terms of treatment, environmental enrichment (EE) as an environmental intervention can effectively improve the symptoms of cognitive impairment in rodents. In this paper, we first briefly introduce the background of cognitive symptoms and EE in schizophrenia, and then investigate the manifestations of MK-801 induced cognitive impairment, the improvement of EE on these cognitive impairments based on the MK-801 induced schizophrenia rodent models, and the possible mechanism of EE in improving cognitive symptoms. This article reviews the literature in recent years, which provides an important reference for MK-801 to construct a cognitive symptom model of schizophrenia and the mechanism of EE in improving cognitive symptoms of schizophrenia.
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Min C, Ling R, Chen M, Xia D, Chen R, Li X. Enriched environment rescues neonatal pain induced cognitive deficits and the impaired hippocampal synaptic plasticity later in life. Dev Neurobiol 2022; 82:545-561. [PMID: 35945168 DOI: 10.1002/dneu.22898] [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: 12/14/2021] [Revised: 05/04/2022] [Accepted: 07/27/2022] [Indexed: 11/06/2022]
Abstract
Although extensive and untreated pain that occurs during a critical developmental window may impair cognition later in life, environmental interventions at early might promote. However, the underlying mechanism is poorly understood. Our current study utilized a rat model of "repetitive needle pricks" from the day of birth (P0) to postnatal day 7 (P7) to mimic the painful experience of preterm neonates in the Neonatal intensive care unit (NICU). Enriched environment (EE) during development period (from P15 to P70) was implemented as a nonpharmacological intervention approach. Electrophysiological recording, behavioral tests and biochemical analysis were performed after the end of EE (between P71 and P80). Results showed neonatal repetitive pain resulted in a reduction in mechanical withdrawal thresholds by the von Frey test in P70 (P < 0.001). Furthermore, neonatal repetitive pain impaired spatial learning and memory (P < 0.05) and even led to dysfunction in fear memory (P < 0.01). In contrast, EE rescued neonatal pain induced cognitive deficits and normalized hippocampal long-term potentiation in rats exposed to neonatal pain (P < 0.05). The beneficial effect of EE might be the improvements in hippocampal synaptic plasticity via up-regulating neurotrophic factors and N-methyl-D-aspartate (NMDA) receptors in the hippocampus. Our findings provide evidence that early environmental intervention might be a safe strategy to overcome neurodevelopmental abnormalities in preterm infants who experienced multiple procedural painful events during the early critical period. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Cuiting Min
- Department of Child Health Care, Children's Hospital of Nanjing Medical University, No.72 Guangzhou Road, Nanjing, Jiangsu Province, 210008, P.R. China
| | - Ru Ling
- Department of Child Health Care, Children's Hospital of Nanjing Medical University, No.72 Guangzhou Road, Nanjing, Jiangsu Province, 210008, P.R. China
| | - Mengying Chen
- Department of Child Health Care, Children's Hospital of Nanjing Medical University, No.72 Guangzhou Road, Nanjing, Jiangsu Province, 210008, P.R. China
| | - Dongqing Xia
- Department of Child Health Care, Children's Hospital of Nanjing Medical University, No.72 Guangzhou Road, Nanjing, Jiangsu Province, 210008, P.R. China
| | - Ran Chen
- Department of Child Health Care, Children's Hospital of Nanjing Medical University, No.72 Guangzhou Road, Nanjing, Jiangsu Province, 210008, P.R. China
| | - Xiaonan Li
- Department of Child Health Care, Children's Hospital of Nanjing Medical University, No.72 Guangzhou Road, Nanjing, Jiangsu Province, 210008, P.R. China
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Nair KP, Salaka RJ, Srikumar BN, Kutty BM, Rao BSS. Enriched environment rescues impaired sleep-wake architecture and abnormal neural dynamics in chronic epileptic rats. Neuroscience 2022; 495:97-114. [DOI: 10.1016/j.neuroscience.2022.05.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 05/12/2022] [Accepted: 05/19/2022] [Indexed: 11/16/2022]
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8
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Ochi R, Fujita N, Takaishi K, Oshima T, Nguyen ST, Nishijo H, Urakawa S. Voluntary exercise reverses social behavior deficits and the increases in the densities of cholecystokinin-positive neurons in specific corticolimbic regions of diabetic OLETF rats. Behav Brain Res 2022; 428:113886. [DOI: 10.1016/j.bbr.2022.113886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 03/31/2022] [Accepted: 04/04/2022] [Indexed: 11/02/2022]
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Tsai CW, Tsai SJ, Pan YJ, Lin HM, Pan TY, Yang FY. Transcranial Ultrasound Stimulation Reverses Behavior Changes and the Expression of Calcium-Binding Protein in a Rodent Model of Schizophrenia. Neurotherapeutics 2022; 19:649-659. [PMID: 35229268 PMCID: PMC9226253 DOI: 10.1007/s13311-022-01195-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/26/2022] [Indexed: 11/29/2022] Open
Abstract
Cognitive dysfunctions are a core feature of schizophrenia that may be linked to abnormalities in gamma-aminobutyric-acid (GABA)ergic neurons. Traditional antipsychotics show poor efficacy in treating cognitive symptoms. The purpose of this study was to investigate the restorative role of transcranial ultrasound stimulation (TUS) in counteracting dizocilpine (MK-801)-induced cognitive deficits and GABAergic interneuron dysfunction in a simulation of schizophrenia. Some rats subjected to MK-801 administration were treated with low-intensity pulsed ultrasound (LIPUS) daily for 5 days, while other rats subjected to MK-801 administration received no LIPUS treatment. After LIPUS treatment, the neuroprotective effects of LIPUS in the LIPUS-treated rats were assessed through behavioral analysis, western blotting, and histological observations. Compared with the MK-801-treated group, the MK-801 plus LIPUS-treated rats revealed a preference for novel objects. The MK-801 plus LIPUS-treated rats also exhibited a significant decrease in swim times compared to the MK-801-treated rats. LIPUS stimulation significantly increased hippocampal levels of CB and PV and restored the cell densities of PV + and CB + in the cingulate cortex in the MK-801 plus LIPUS-treated group. In addition, LIPUS stimulation rebalanced the BDNF levels in the hippocampus and medial prefrontal cortex. Our findings indicate that LIPUS improves cognitive deficits and ameliorates neuropathology in MK-801-treated rats. These results suggest that LIPUS may constitute a potential novel therapeutic approach for the treatment of schizophrenia.
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Affiliation(s)
- Che-Wen Tsai
- Department of Biomedical Imaging and Radiological Sciences, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Shih-Jen Tsai
- Department of Psychiatry, Taipei Veterans General Hospital, Taipei, Taiwan
- Division of Psychiatry, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Yi-Ju Pan
- Department of Psychiatry, Far Eastern Memorial Hospital, New Taipei City, Taiwan
- Institute of Public Health, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Hsin-Mei Lin
- Department of Biomedical Imaging and Radiological Sciences, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Tsung-Yu Pan
- Department of Biomedical Imaging and Radiological Sciences, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Feng-Yi Yang
- Department of Biomedical Imaging and Radiological Sciences, National Yang Ming Chiao Tung University, Taipei, Taiwan.
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Dwir D, Cabungcal JH, Xin L, Giangreco B, Parietti E, Cleusix M, Jenni R, Klauser P, Conus P, Cuénod M, Steullet P, Do KQ. Timely N-Acetyl-Cysteine and Environmental Enrichment Rescue Oxidative Stress-Induced Parvalbumin Interneuron Impairments via MMP9/RAGE Pathway: A Translational Approach for Early Intervention in Psychosis. Schizophr Bull 2021; 47:1782-1794. [PMID: 34080015 PMCID: PMC8530393 DOI: 10.1093/schbul/sbab066] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Research in schizophrenia (SZ) emphasizes the need for new therapeutic approaches based on antioxidant/anti-inflammatory compounds and psycho-social therapy. A hallmark of SZ is a dysfunction of parvalbumin-expressing fast-spiking interneurons (PVI), which are essential for neuronal synchrony during sensory/cognitive processing. Oxidative stress and inflammation during early brain development, as observed in SZ, affect PVI maturation. We compared the efficacy of N-acetyl-cysteine (NAC) and/or environmental enrichment (EE) provided during juvenile and/or adolescent periods in rescuing PVI impairments induced by an additional oxidative insult during childhood in a transgenic mouse model with gluthation deficit (Gclm KO), relevant for SZ. We tested whether this rescue was promoted by the inhibition of MMP9/RAGE mechanism, both in the mouse model and in early psychosis (EP) patients, enrolled in a double-blind, randomized, placebo-controlled clinical trial of NAC supplementation for 6 months. We show that a sequential combination of NAC+EE applied after an early-life oxidative insult recovers integrity and function of PVI network in adult Gclm KO, via the inhibition of MMP9/RAGE. Six-month NAC treatment in EP patients reduces plasma sRAGE in association with increased prefrontal GABA, improvement of cognition and clinical symptoms, suggesting similar neuroprotective mechanisms. The sequential combination of NAC+EE reverses long-lasting effects of an early oxidative insult on PVI/perineuronal net (PNN) through the inhibition of MMP9/RAGE mechanism. In analogy, patients vulnerable to early-life insults could benefit from a combined pharmacological and psycho-social therapy.
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Affiliation(s)
- Daniella Dwir
- Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Jan-Harry Cabungcal
- Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Lijing Xin
- Animal Imaging and Technology Core (AIT), Center for Biomedical Imaging (CIBM), Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Basilio Giangreco
- Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Enea Parietti
- Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Martine Cleusix
- Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital (CHUV), Lausanne, Switzerland
- Service of General Psychiatry, Department of Psychiatry, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Raoul Jenni
- Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital (CHUV), Lausanne, Switzerland
- Service of General Psychiatry, Department of Psychiatry, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Paul Klauser
- Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital (CHUV), Lausanne, Switzerland
- Service of General Psychiatry, Department of Psychiatry, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Philippe Conus
- Service of General Psychiatry, Department of Psychiatry, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Michel Cuénod
- Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Pascal Steullet
- Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Kim Q Do
- Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital (CHUV), Lausanne, Switzerland
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Plasticity in the hippocampal formation of shorebirds during the wintering period: Stereological analysis of parvalbumin neurons in Actitis macularius. Learn Behav 2021; 50:45-54. [PMID: 34244975 DOI: 10.3758/s13420-021-00473-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/17/2021] [Indexed: 11/08/2022]
Abstract
The number of parvalbumin neurons can be modified by social, multisensory, and cognitive stimuli in both mammals and birds, but nothing is known about their plasticity in long-distance migratory shorebirds. Here, in the spotted sandpiper (Actitis macularius), we investigated the plasticity of parvalbumin neurons of two brain areas during this species' wintering period at a lower latitude. We compared individuals in a nonmigratory rest period (November-January) and premigration (May-July) period. We used parvalbumin as a marker for counting a subpopulation of inhibitory neurons in the hippocampal formation (HF), with the magnocellular nucleus of the tectal isthmus (IMC) as a control area. Because the HF is involved in learning and memory and social interaction and the IMC is essential for control of head, neck, and eye movements, we hypothesized that parvalbumin neurons would increase in the HF and remain unchanged in the IMC. We used an optical fractionator to estimate cell numbers. Compared with the nonmigratory rest birds, parvalbumin neuron count estimates in the premigration birds increased significantly in the HF but remained unchanged in IMC. We suggest that the greater number of parvalbuminergic neurons in the HF of A. macularius in the premigration period represents adaptive circuitry changes involved in the migration back to reproductive niches in the northern hemisphere.
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Huang Y, Jiang H, Zheng Q, Fok AHK, Li X, Lau CG, Lai CSW. Environmental enrichment or selective activation of parvalbumin-expressing interneurons ameliorates synaptic and behavioral deficits in animal models with schizophrenia-like behaviors during adolescence. Mol Psychiatry 2021; 26:2533-2552. [PMID: 33473150 DOI: 10.1038/s41380-020-01005-w] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 12/15/2020] [Accepted: 12/16/2020] [Indexed: 12/18/2022]
Abstract
Synaptic deficit-induced excitation and inhibition (E/I) imbalance have been implicated in the pathogenesis of schizophrenia. Using in vivo two-photon microscopy, we examined the dynamic plasticity of dendritic spines of pyramidal neurons (PNs) and "en passant" axonal bouton of parvalbumin-expressing interneurons (PVINs) in the frontal association (FrA) cortex in two adolescent mouse models with schizophrenia-like behaviors. Simultaneous imaging of PN dendritic spines and PV axonal boutons showed that repeated exposure to N-methyl-D-aspartate receptor (NMDAR) antagonist MK801 during adolescence disrupted the normal developmental balance of excitatory and inhibitory synaptic structures. This MK801-induced structural E/I imbalance significantly correlated with animal recognition memory deficits and could be ameliorated by environmental enrichment (EE). In addition, selective chemogenetic activation of PVINs in the FrA mimicked the effects of EE on both synaptic plasticity and animal behavior, while selective inhibition of PVIN abolished EE's beneficial effects. Electrophysiological recordings showed that chronic MK801 treatment significantly suppressed the frequency of mEPSC/mIPSC ratio of layer (L) 2/3 PNs and significantly reduced the resting membrane potential of PVINs, the latter was rescued by selective activation of PVINs. Such manipulations of PVINs also showed similar effects in PV-Cre; ErbB4fl/fl animal model with schizophrenia-like behaviors. EE or selective activation of PVINs in the FrA restored behavioral deficits and structural E/I imbalance in adolescent PV-Cre; ErbB4fl/fl mice, while selective inhibition of PVINs abolished EE's beneficial effects. Our findings suggest that the PVIN activity in the FrA plays a crucial role in regulating excitatory and inhibitory synaptic structural dynamics and animal behaviors, which may provide a potential therapeutic target for schizophrenia treatment.
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Affiliation(s)
- Yuhua Huang
- School of Biomedical Sciences, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - Hehai Jiang
- Department of Biomedical Sciences, City University of Hong Kong, Kowloon Tong, Hong Kong.,Department of Neuroscience, City University of Hong Kong, Kowloon Tong, Hong Kong
| | - Qiyu Zheng
- School of Biomedical Sciences, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - Albert Hiu Ka Fok
- School of Biomedical Sciences, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - Xiaoyang Li
- School of Biomedical Sciences, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - C Geoffrey Lau
- Department of Biomedical Sciences, City University of Hong Kong, Kowloon Tong, Hong Kong.,Department of Neuroscience, City University of Hong Kong, Kowloon Tong, Hong Kong
| | - Cora Sau Wan Lai
- School of Biomedical Sciences, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong. .,State Key Laboratory of Cognitive and Brain Research, The University of Hong Kong, Pokfulam, Hong Kong.
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Rittweger N, Ishorst T, Barmashenko G, Aliane V, Winter C, Funke K. Effects of iTBS-rTMS on the Behavioral Phenotype of a Rat Model of Maternal Immune Activation. Front Behav Neurosci 2021; 15:670699. [PMID: 33967716 PMCID: PMC8098712 DOI: 10.3389/fnbeh.2021.670699] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 03/30/2021] [Indexed: 12/23/2022] Open
Abstract
Repetitive transcranial magnetic stimulation (rTMS) is considered a promising therapeutic tool for treating neuropsychiatric diseases. Previously, we found intermittent theta-burst stimulation (iTBS) rTMS to be most effective in modulating cortical excitation-inhibition balance in rats, accompanied by improved cortical sensory processing and sensory learning performance. Using an animal schizophrenia model based on maternal immune activation (MIA) we tested if iTBS applied to either adult or juvenile rats can affect the behavioral phenotype in a therapeutic or preventive manner, respectively. In a sham-controlled fashion, iTBS effects in MIA rats were compared with rats receiving vehicle NaCl injection instead of the synthetic viral strand. Prior to iTBS, adult MIA rats showed deficits in sensory gating, as tested with prepulse inhibition (PPI) of the acoustic startle reflex, and deficits in novel object recognition (NOR). No differences between MIA and control rats were evident with regard to signs of anxiety, anhedonia and depression but MIA rats were somewhat superior to controls during the training phase of Morris Water Maze (MWM) test. MIA but not control rats significantly improved in PPI following iTBS at adulthood but without significant differences between verum and sham application. If applied during adolescence, verum but not sham-iTBS improved NOR at adulthood but no difference in PPI was evident in rats treated either with sham or verum-iTBS. MIA and control rat responses to sham-iTBS applied at adulthood differed remarkably, indicating a different physiological reaction to the experimental experiences. Although verum-iTBS was not superior to sham-iTBS, MIA rats seemed to benefit from the treatment procedure in general, since differences-in relation to control rats declined or disappeared. Even if classical placebo effects can be excluded, motor or cognitive challenges or the entire handling procedure during the experiments appear to alleviate the behavioral impairments of MIA rats.
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Affiliation(s)
- Nadine Rittweger
- Department of Neurophysiology, Medical Faculty, Ruhr-University, Bochum, Germany
| | - Tanja Ishorst
- Department of Neurophysiology, Medical Faculty, Ruhr-University, Bochum, Germany
| | - Gleb Barmashenko
- Department of Neurophysiology, Medical Faculty, Ruhr-University, Bochum, Germany.,AIO-Studien-gGmbH, Berlin, Germany
| | - Verena Aliane
- Department of Neurophysiology, Medical Faculty, Ruhr-University, Bochum, Germany
| | - Christine Winter
- Department of Psychiatry and Psychotherapy, Charité University Medicine Berlin, Berlin, Germany.,Department of Psychiatry and Psychotherapy, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Klaus Funke
- Department of Neurophysiology, Medical Faculty, Ruhr-University, Bochum, Germany
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Ochi R, Fujita N, Goto N, Nguyen ST, Le DT, Matsushita K, Ono T, Nishijo H, Urakawa S. Region-specific brain area reductions and increased cholecystokinin positive neurons in diabetic OLETF rats: implication for anxiety-like behavior. J Physiol Sci 2020; 70:42. [PMID: 32938363 PMCID: PMC10717394 DOI: 10.1186/s12576-020-00771-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 09/07/2020] [Indexed: 11/10/2022]
Abstract
Metabolic disorders can induce psychiatric comorbidities. Both brain and neuronal composition imbalances reportedly induce an anxiety-like phenotype. We hypothesized that alterations of localized brain areas and cholecystokinin (CCK) and parvalbumin (PV) expression could induce anxiety-like behavior in type 2 diabetic Otsuka Long-Evans Tokushima fatty (OLETF) rats. Twenty-week-old OLETF and non-diabetic Long-Evans Tokushima Otsuka (LETO) rats were used. The areas of corticolimbic regions were smaller in OLETF rats. The densities of CCK positive neurons in the lateral and basolateral amygdala, hippocampal cornu ammonis area 2, and prelimbic cortex were higher in OLETF rats. The densities of PV positive neurons were comparable between OLETF and LETO rats. Locomotion in the center zone in the open field test was lower in OLETF rats. These results suggest that imbalances of specific brain region areas and neuronal compositions in emotion-related areas increase the prevalence of anxiety-like behaviors in OLETF rats.
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Affiliation(s)
- Ryosuke Ochi
- Department of Musculoskeletal Functional Research and Regeneration, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan
| | - Naoto Fujita
- Department of Musculoskeletal Functional Research and Regeneration, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan
| | - Natsuki Goto
- Department of Musculoskeletal Functional Research and Regeneration, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan
| | - Son Tien Nguyen
- Department of Musculoskeletal Functional Research and Regeneration, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan
- Department of Rheumatology and Endocrinology, 103 Military Hospital, Vietnam Military Medical University, 160, Phung Hung Street, Phuc La, Ha Dong, Hanoi, 12108, Vietnam
| | - Duc Trung Le
- Department of Musculoskeletal Functional Research and Regeneration, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan
- Department of Neurology, 103 Military Hospital, Vietnam Military Medical University, 160, Phung Hung Street, Phuc La, Ha Dong, Hanoi, 12108, Vietnam
| | - Kojiro Matsushita
- Department of Mechanical Engineering, Facility of Engineering, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - Taketoshi Ono
- System Emotional Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Sugitani 2630, Toyama, 930-0152, Japan
| | - Hisao Nishijo
- System Emotional Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Sugitani 2630, Toyama, 930-0152, Japan
| | - Susumu Urakawa
- Department of Musculoskeletal Functional Research and Regeneration, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8553, Japan.
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15
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Cavalcante KM, Bispo JM, Souza MF, Medeiros KA, Lins LC, Santos ER, Melo JE, Gois AM, Meurer YS, Leal PC, Marchioro M, Santos JR. Short-term but not long-term exposure to an enriched environment facilitates the extinction of aversive memory. Behav Brain Res 2020; 393:112806. [DOI: 10.1016/j.bbr.2020.112806] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Revised: 06/26/2020] [Accepted: 07/08/2020] [Indexed: 10/23/2022]
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16
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Luo C, Wang X, Mao X, Huang H, Liu Y, Zhao J, Zhou H, Liu Z, Li X. Metformin attenuates antipsychotic-induced metabolic dysfunctions in MK801-induced schizophrenia-like rats. Psychopharmacology (Berl) 2020; 237:2257-2277. [PMID: 32588080 DOI: 10.1007/s00213-020-05524-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Accepted: 04/08/2020] [Indexed: 12/14/2022]
Abstract
RATIONALE Second-generation antipsychotics are the first-line medications prescribed for schizophrenic patients; however, some of them, such as olanzapine and risperidone, may induce metabolic dysfunctions during short-term treatment. Metformin is an effective adjuvant that attenuates antipsychotic-induced metabolic dysfunctions (AIMD) in clinical practice. Whether metformin can reverse AIMD and whether metformin affects the therapeutic effects of antipsychotics in animal models of schizophrenia are questions that still need to be investigated. METHODS In this study, an animal model of schizophrenia was established by consecutive injections of MK801 during the neurodevelopmental period. In adulthood, different dosages of olanzapine or risperidone treatment were administered to the schizophrenia model animals for 14 days. Both therapeutic effects and metabolic adverse effects were measured by behavioral tests, histopathological tests, and biochemical tests. The coadministration of different doses of metformin with olanzapine or risperidone was used to evaluate the effects of metformin on both AIMD and the therapeutic effect of those antipsychotics. RESULTS The MK801-treated rats showed schizophrenia-like behavior and variations in the shape and volume of the hippocampus. Both olanzapine and risperidone reversed the MK801-induced behavioral abnormalities as the dosage increased; however, they degenerated the hepatocytes in the liver and influenced the blood lipid levels and blood glucose levels. The coadministration of metformin did not affect the therapeutic effects of olanzapine or risperidone on behavioral abnormalities but attenuated the metabolic dysfunctions induced by those antipsychotics. CONCLUSION Metformin attenuated the olanzapine- and risperidone-induced metabolic dysfunctions in MK801-induced schizophrenia-like rats without reducing the therapeutic effects of the antipsychotics.
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Affiliation(s)
- Chao Luo
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, China
- Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha, 410078, China
- School of Life Sciences, Central South University, Changsha, 410078, Hunan, China
| | - Xu Wang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, China
- Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha, 410078, China
| | - Xiaoyuan Mao
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, China
- Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha, 410078, China
| | - Hanxue Huang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, China
- Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha, 410078, China
| | - Yong Liu
- Mental Health Institute of the Second Xiangya Hospital, National Technology Institute of Psychiatry, Key Laboratory of Psychiatry and Mental Health of Hunan Province, Central South University, No. 139, Renmin Middle Road, Changsha, 410011, China
| | - Jingping Zhao
- Mental Health Institute of the Second Xiangya Hospital, National Technology Institute of Psychiatry, Key Laboratory of Psychiatry and Mental Health of Hunan Province, Central South University, No. 139, Renmin Middle Road, Changsha, 410011, China
| | - Honghao Zhou
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, China
- Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha, 410078, China
| | - Zhaoqian Liu
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, 410008, China.
- Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha, 410078, China.
| | - Xiangping Li
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, 410008, China.
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17
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Wu Y, Mitra R. Prefrontal-hippocampus plasticity reinstated by an enriched environment during stress. Neurosci Res 2020; 170:360-363. [PMID: 32710912 DOI: 10.1016/j.neures.2020.07.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 05/14/2020] [Accepted: 07/09/2020] [Indexed: 01/17/2023]
Abstract
Chronic stress causes dendritic atrophy of neurons within the hippocampus and medial prefrontal cortex. In this report, we show that chronic stress leads to reduced long-term potentiation in the pathway from the hippocampus to the medial prefrontal cortex of rats; and that such reduction is rescued by enriched housing environment. Connectivity between the hippocampus and medial prefrontal cortex is proposed to be an essential substrate that is often compromised in several psychiatric disorders. Our observations suggest that a short period of complexity in the housing environment has the potential to protect the functional integrity of this important connection.
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Affiliation(s)
- You Wu
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, 63755 Singapore
| | - Rupshi Mitra
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, 63755 Singapore.
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18
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Murueta-Goyena A, Ortuzar N, Lafuente JV, Bengoetxea H. Enriched Environment Reverts Somatostatin Interneuron Loss in MK-801 Model of Schizophrenia. Mol Neurobiol 2019; 57:125-134. [PMID: 31506899 DOI: 10.1007/s12035-019-01762-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 08/29/2019] [Indexed: 02/02/2023]
Abstract
Dysregulation of the inhibitory drive has been proposed to be a central mechanism to explain symptoms and pathophysiological hallmarks in schizophrenia. A number of recent neuroanatomical studies suggest that certain types of inhibitory cells are deficient in schizophrenia, including somatostatin-immunoreactive interneurons (SST+). The present study sought to use stereological methods to investigate whether the number of SST+ interneurons decreased after repeated injections of NMDA receptor antagonist MK-801 (0.5 mg/kg) and to determine the effect of limited exposure to an enriched environment (EE) in adult life on this sub-population of inhibitory cells. Considering that somatostatin expression is highly dependent on neurotrophic support, we explored the changes in the relative expression of proteins related to brain-derived neurotrophic factor-tyrosine kinase B (BDNF-TrkB) signaling between the experimental groups. We observed that early-life MK-801 treatment significantly decreased the number of SST+ interneurons in the medial prefrontal cortex (mPFC) and the hippocampus (HPC) of adult Long Evans rats. Contrarily, short-term exposure to EE increased the number of SST+ interneurons in MK-801-injected animals, except in the CA1 region of the hippocampus, whereas this increase was not observed in vehicle-injected rats. We also found upregulated BDNF-TrkB signaling after EE that triggered an increase in the pERK/ERK ratio in mPFC and HPC, and the pAkt/Akt ratio in HPC. Thus, the present results support the notion that SST+ interneurons are markedly affected after early-life NMDAR blockade and that EE promotes SST+ interneuron expression, which is partly mediated through the BDNF-TrkB signaling pathway. These results may have important implications for schizophrenia, as SST+ interneuron loss is also observed in the MK-801 pre-clinical model, and its expression can be rescued by non-pharmacological approaches.
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Affiliation(s)
- Ane Murueta-Goyena
- Laboratory of Clinical and Experimental Neuroscience, Department of Neuroscience, University of the Basque Country, UPV/EHU, Leioa, Bizkaia, Spain. .,Neurodegenerative Diseases group, BioCruces Bizkaia Health Research Institute, Plaza de Cruces 12, 48903, Barakaldo, Bizkaia, Spain.
| | - Naiara Ortuzar
- Laboratory of Clinical and Experimental Neuroscience, Department of Neuroscience, University of the Basque Country, UPV/EHU, Leioa, Bizkaia, Spain
| | - José Vicente Lafuente
- Laboratory of Clinical and Experimental Neuroscience, Department of Neuroscience, University of the Basque Country, UPV/EHU, Leioa, Bizkaia, Spain.,Nanoneurosurgery Group, BioCruces Bizkaia Health Research Institute, Plaza de Cruces 12, 48903, Barakaldo, Bizkaia, Spain
| | - Harkaitz Bengoetxea
- Laboratory of Clinical and Experimental Neuroscience, Department of Neuroscience, University of the Basque Country, UPV/EHU, Leioa, Bizkaia, Spain
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Ueno H, Suemitsu S, Murakami S, Kitamura N, Wani K, Takahashi Y, Matsumoto Y, Okamoto M, Ishihara T. Behavioural effects of inhalation exposure to dizocilpine (MK-801) in mice. Biomed Pharmacother 2019; 117:109038. [PMID: 31177060 DOI: 10.1016/j.biopha.2019.109038] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 05/24/2019] [Accepted: 05/29/2019] [Indexed: 12/17/2022] Open
Abstract
The complex pathophysiology of brain disorders and the difficulty of delivering therapeutic agents to the brain remain major obstacles in the research and development of new therapeutic methods for brain disorders. Therefore, delivering existing therapeutic agents to the central nervous system is expected to provide benefits in various diseases. In this study, we investigated whether inhaled central nervous system drugs reached the brain and affected mouse behaviour. Dizocilpine (MK-801), which increases locomotor activity in mice, was mainly used to study this hypothesis. First, we administered MK-801, an N-methyl-d-aspartate receptor antagonist, to mice via inhalation and examined whether it induced excessive activity similar to that observed after intraperitoneal administration. We also examined the time- and dose-dependency of drug induced changes in mouse behaviour after MK-801 inhalation. Next, we investigated whether inhalation of scopolamine, pentobarbital, and imipramine also affected mouse behaviour. Mice that inhaled MK-801 showed MK-801-induced hyperactivity similar to that observed following intraperitoneal administration. Furthermore, the extent of activity changed in a time- and dose-dependent manner after MK-801 inhalation. Inhalation of pentobarbital, scopolamine, and imipramine also changed mouse behaviour. These results demonstrate that inhalation of MK-801 exerts effects similar to those achieved with intraperitoneal and oral administration in mice. Thus, central nervous system agonists can reach the brain efficiently via inhalation. This finding may facilitate the development of improved therapies for brain disorders.
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Affiliation(s)
- Hiroshi Ueno
- Department of Medical Technology, Kawasaki University of Medical Welfare, Okayama 701-0193, Japan.
| | - Shunsuke Suemitsu
- Department of Psychiatry, Kawasaki Medical School, Kurashiki 701-0192, Japan.
| | - Shinji Murakami
- Department of Psychiatry, Kawasaki Medical School, Kurashiki 701-0192, Japan.
| | - Naoya Kitamura
- Department of Psychiatry, Kawasaki Medical School, Kurashiki 701-0192, Japan.
| | - Kenta Wani
- Department of Psychiatry, Kawasaki Medical School, Kurashiki 701-0192, Japan.
| | - Yu Takahashi
- Department of Psychiatry, Kawasaki Medical School, Kurashiki 701-0192, Japan.
| | - Yosuke Matsumoto
- Department of Neuropsychiatry, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan.
| | - Motoi Okamoto
- Department of Medical Technology, Graduate School of Health Sciences, Okayama University, Okayama 700-8558, Japan.
| | - Takeshi Ishihara
- Department of Psychiatry, Kawasaki Medical School, Kurashiki 701-0192, Japan.
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Faatehi M, Basiri M, Nezhadi A, Shabani M, Masoumi-Ardakani Y, Soltani Z, Nozari M. Early enriched environment prevents cognitive impairment in an animal model of schizophrenia induced by MK-801: Role of hippocampal BDNF. Brain Res 2019; 1711:115-119. [DOI: 10.1016/j.brainres.2019.01.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 12/25/2018] [Accepted: 01/20/2019] [Indexed: 12/16/2022]
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21
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Murueta-Goyena A, Morera-Herreras T, Miguelez C, Gutiérrez-Ceballos A, Ugedo L, Lafuente JV, Bengoetxea H. Effects of adult enriched environment on cognition, hippocampal-prefrontal plasticity and NMDAR subunit expression in MK-801-induced schizophrenia model. Eur Neuropsychopharmacol 2019; 29:590-600. [PMID: 30926324 DOI: 10.1016/j.euroneuro.2019.03.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 03/13/2019] [Accepted: 03/13/2019] [Indexed: 11/30/2022]
Abstract
Schizophrenia is a mental disorder characterized by psychosis, negative symptoms and cognitive impairment. Cognitive deficits are enduring and represent the most disabling symptom but are currently poorly treated. N-methyl D-aspartate receptor (NMDAR) hypofunction hypothesis has been notably successful in explaining the pathophysiological findings and symptomatology of schizophrenia. Thereby, NMDAR blockade in rodents represents a useful tool to identify new therapeutic approaches. In this regard, enriched environment (EE) could play an essential role. Using a multilevel approach of behavior, electrophysiology and protein analysis, we showed that a short-term exposure to EE in adulthood ameliorated spatial learning and object-place associative memory impairment observed in postnatally MK-801-treated Long Evans rats. Moreover, EE in adult life restored long-term potentiation (LTP) in hippocampal-medial prefrontal pathway abolished by MK-801 treatment. EE in adulthood also induced a set of modifications in the expression of proteins related to glutamatergic neurotransmission. Taken together, these findings shed new light on the neurobiological effects of EE to reverse the actions of MK-801 and offer a preclinical testing of a therapeutic strategy that may be remarkably effective for managing cognitive symptoms of schizophrenia.
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Affiliation(s)
- Ane Murueta-Goyena
- Deparment of Neuroscience, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, Leioa 48940, Bizkaia, Spain; Neurodegenerative Diseases group, BioCruces Bizkaia Health Research Institute, Barakaldo, Spain.
| | - Teresa Morera-Herreras
- Deparment of Pharmacology, University of the Basque Country (UPV/EHU), Leioa, Spain; Neurodegenerative Diseases group, BioCruces Bizkaia Health Research Institute, Barakaldo, Spain
| | - Cristina Miguelez
- Deparment of Pharmacology, University of the Basque Country (UPV/EHU), Leioa, Spain; Neurodegenerative Diseases group, BioCruces Bizkaia Health Research Institute, Barakaldo, Spain
| | | | - Luisa Ugedo
- Deparment of Pharmacology, University of the Basque Country (UPV/EHU), Leioa, Spain; Neurodegenerative Diseases group, BioCruces Bizkaia Health Research Institute, Barakaldo, Spain
| | - José Vicente Lafuente
- Deparment of Neuroscience, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, Leioa 48940, Bizkaia, Spain; Nanoneurosurgery Group, BioCruces Bizkaia Health Research Institute, Barakaldo, Spain; Faculty of Health Science, Universidad Autónoma de Chile, Santiago de Chile, Chile
| | - Harkaitz Bengoetxea
- Deparment of Neuroscience, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, Leioa 48940, Bizkaia, Spain
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22
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Zimmermann KS, Richardson R, Baker KD. Maturational Changes in Prefrontal and Amygdala Circuits in Adolescence: Implications for Understanding Fear Inhibition during a Vulnerable Period of Development. Brain Sci 2019; 9:E65. [PMID: 30889864 PMCID: PMC6468701 DOI: 10.3390/brainsci9030065] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 03/13/2019] [Accepted: 03/14/2019] [Indexed: 12/24/2022] Open
Abstract
Anxiety disorders that develop in adolescence represent a significant burden and are particularly challenging to treat, due in no small part to the high occurrence of relapse in this age group following exposure therapy. This pattern of persistent fear is preserved across species; relative to those younger and older, adolescents consistently show poorer extinction, a key process underpinning exposure therapy. This suggests that the neural processes underlying fear extinction are temporarily but profoundly compromised during adolescence. The formation, retrieval, and modification of fear- and extinction-associated memories are regulated by a forebrain network consisting of the prefrontal cortex (PFC), the amygdala, and the hippocampus. These regions undergo robust maturational changes in early life, with unique alterations in structure and function occurring throughout adolescence. In this review, we focus primarily on two of these regions-the PFC and the amygdala-and discuss how changes in plasticity, synaptic transmission, inhibition/excitation, and connectivity (including modulation by hippocampal afferents to the PFC) may contribute to transient deficits in extinction retention. We end with a brief consideration of how exposure to stress during this adolescent window of vulnerability can permanently disrupt neurodevelopment, leading to lasting impairments in pathways of emotional regulation.
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Affiliation(s)
- Kelsey S Zimmermann
- School of Psychology, University of New South Wales (UNSW), Sydney, NSW 2052, Australia.
| | - Rick Richardson
- School of Psychology, University of New South Wales (UNSW), Sydney, NSW 2052, Australia.
| | - Kathryn D Baker
- School of Psychology, University of New South Wales (UNSW), Sydney, NSW 2052, Australia.
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