Rethinking Schizophrenia and Depression Comorbidity as One Psychiatric Disorder Entity: Evidence From Mouse Model

Schizophrenia is frequently accompanied by depressive symptoms, but the pathological mechanisms remain to be elucidated. In this study, we used chronic unpredicted mild stress plus MK801 injection to generate a mouse model of schizophrenia with depression, in which in vivo 2-photon calcium imaging a...

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Main Authors: Chunhua Zhou, Dezhi Kong, Xiaodong Zhu, Wei Wu, Rong Xue, Gongying Li, Yong Xu, Sha Liu, Hongjun Tian, Chuanjun Zhuo
Format: Article
Language:English
Published: Frontiers Media S.A. 2020-03-01
Series:Frontiers in Neuroscience
Subjects:
Online Access:https://www.frontiersin.org/article/10.3389/fnins.2020.00115/full
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author Chunhua Zhou
Dezhi Kong
Xiaodong Zhu
Wei Wu
Rong Xue
Gongying Li
Yong Xu
Sha Liu
Hongjun Tian
Chuanjun Zhuo
Chuanjun Zhuo
Chuanjun Zhuo
author_facet Chunhua Zhou
Dezhi Kong
Xiaodong Zhu
Wei Wu
Rong Xue
Gongying Li
Yong Xu
Sha Liu
Hongjun Tian
Chuanjun Zhuo
Chuanjun Zhuo
Chuanjun Zhuo
author_sort Chunhua Zhou
collection DOAJ
description Schizophrenia is frequently accompanied by depressive symptoms, but the pathological mechanisms remain to be elucidated. In this study, we used chronic unpredicted mild stress plus MK801 injection to generate a mouse model of schizophrenia with depression, in which in vivo 2-photon calcium imaging and electrophysiological recordings were performed in conjunction with behavioral phenotyping. Compared to mice models with classical depression or to schizophrenia models, the animal models with schizophrenia and depression comorbidity presented worse psychotic and depressive symptoms. These behavioral deficits are associated with impaired neuronal calcium activities in the frontal cortex and thalamic nuclei. Moreover, in sharp contrast to classical models that have a satisfactory response to antipsychotic or antidepressant drugs, this novel schizophrenia with depression model is resilient to combined drug treatment in terms of behavioral and functional recovery. Taken together, these data indicate that schizophrenia with depression likely involves a unique pathophysiology that is different from schizophrenia or depression alone.
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spelling doaj.art-bb426ffc5dd3462fb3e063298a3065a02022-12-21T17:31:40ZengFrontiers Media S.A.Frontiers in Neuroscience1662-453X2020-03-011410.3389/fnins.2020.00115507656Rethinking Schizophrenia and Depression Comorbidity as One Psychiatric Disorder Entity: Evidence From Mouse ModelChunhua Zhou0Dezhi Kong1Xiaodong Zhu2Wei Wu3Rong Xue4Gongying Li5Yong Xu6Sha Liu7Hongjun Tian8Chuanjun Zhuo9Chuanjun Zhuo10Chuanjun Zhuo11Department of Pharmacology, The First Hospital of Hebei Medical University, Shijiazhuang, ChinaTwo-Photon In Vivo Imaging Centre, Institute of Chinese Integrative Medicine, Hebei Medical University, Shijiazhuang, ChinaTianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, ChinaTianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, ChinaTianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, ChinaInstitute of Brain Micro Scale Imaging Centre, School of Mental Health, Jining Medical University, Jining, ChinaMDT Center for Cognitive Impairment and Sleep Disorders, First Hospital/First Clinical Medical College of Shanxi Medical University, Taiyuan, ChinaMDT Center for Cognitive Impairment and Sleep Disorders, First Hospital/First Clinical Medical College of Shanxi Medical University, Taiyuan, ChinaPsychiatric-Neuroimaging-Genetics-Comorbidity Laboratory (PNGC_Lab), Tianjin Mental Health Centre, Mental Health Teaching Hospital of Tianjin Medical University, Tianjin Anding Hospital, Tianjin, ChinaInstitute of Brain Micro Scale Imaging Centre, School of Mental Health, Jining Medical University, Jining, ChinaMDT Center for Cognitive Impairment and Sleep Disorders, First Hospital/First Clinical Medical College of Shanxi Medical University, Taiyuan, ChinaPsychiatric-Neuroimaging-Genetics-Comorbidity Laboratory (PNGC_Lab), Tianjin Mental Health Centre, Mental Health Teaching Hospital of Tianjin Medical University, Tianjin Anding Hospital, Tianjin, ChinaSchizophrenia is frequently accompanied by depressive symptoms, but the pathological mechanisms remain to be elucidated. In this study, we used chronic unpredicted mild stress plus MK801 injection to generate a mouse model of schizophrenia with depression, in which in vivo 2-photon calcium imaging and electrophysiological recordings were performed in conjunction with behavioral phenotyping. Compared to mice models with classical depression or to schizophrenia models, the animal models with schizophrenia and depression comorbidity presented worse psychotic and depressive symptoms. These behavioral deficits are associated with impaired neuronal calcium activities in the frontal cortex and thalamic nuclei. Moreover, in sharp contrast to classical models that have a satisfactory response to antipsychotic or antidepressant drugs, this novel schizophrenia with depression model is resilient to combined drug treatment in terms of behavioral and functional recovery. Taken together, these data indicate that schizophrenia with depression likely involves a unique pathophysiology that is different from schizophrenia or depression alone.https://www.frontiersin.org/article/10.3389/fnins.2020.00115/fullschizophreniadepressionmouse modelbehavioral phenotypesprefrontal cortex neuronal activityantipsychotic treatment
spellingShingle Chunhua Zhou
Dezhi Kong
Xiaodong Zhu
Wei Wu
Rong Xue
Gongying Li
Yong Xu
Sha Liu
Hongjun Tian
Chuanjun Zhuo
Chuanjun Zhuo
Chuanjun Zhuo
Rethinking Schizophrenia and Depression Comorbidity as One Psychiatric Disorder Entity: Evidence From Mouse Model
Frontiers in Neuroscience
schizophrenia
depression
mouse model
behavioral phenotypes
prefrontal cortex neuronal activity
antipsychotic treatment
title Rethinking Schizophrenia and Depression Comorbidity as One Psychiatric Disorder Entity: Evidence From Mouse Model
title_full Rethinking Schizophrenia and Depression Comorbidity as One Psychiatric Disorder Entity: Evidence From Mouse Model
title_fullStr Rethinking Schizophrenia and Depression Comorbidity as One Psychiatric Disorder Entity: Evidence From Mouse Model
title_full_unstemmed Rethinking Schizophrenia and Depression Comorbidity as One Psychiatric Disorder Entity: Evidence From Mouse Model
title_short Rethinking Schizophrenia and Depression Comorbidity as One Psychiatric Disorder Entity: Evidence From Mouse Model
title_sort rethinking schizophrenia and depression comorbidity as one psychiatric disorder entity evidence from mouse model
topic schizophrenia
depression
mouse model
behavioral phenotypes
prefrontal cortex neuronal activity
antipsychotic treatment
url https://www.frontiersin.org/article/10.3389/fnins.2020.00115/full
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