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Wang Y, Zhang Y, Wang Y, Chen H, Pan L, Liao X, Wang S. A Novel Form of Neuregulin 1 Type III Caused by N-Terminal Processing. Biomolecules 2023; 13:1756. [PMID: 38136627 PMCID: PMC10741733 DOI: 10.3390/biom13121756] [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: 11/22/2023] [Accepted: 12/04/2023] [Indexed: 12/24/2023] Open
Abstract
Nrg1 (Neuregulin 1) type III, a susceptible gene of schizophrenia, exhibits a critical role in the central nervous system and is essential at each stage of Schwann's cell development. Nrg1 type III comprises double-pass transmembrane domains, with the N-terminal and C-terminal localizing inside the cells. The N-terminal transmembrane helix partially overlaps with the cysteine-rich domain (CRD). In this study, Nrg1 type III constructs with different tags were transformed into cultured cells to verify whether CRD destroyed the transmembrane helix formation. We took advantage of immunofluorescent and immunoprecipitation assays on whole cells and analyzed the N-terminal distribution. Astonishingly, we found that a novel form of Nrg1 type III, about 10% of Nrg1 type III, omitted the N-terminal transmembrane helix, with the N-terminal positioning outside the membrane. The results indicated that the novel single-pass transmembrane status was a minor form of Nrg1 type III caused by N-terminal processing, while the major form was a double-pass transmembrane status.
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Affiliation(s)
- Yukai Wang
- School of Life Sciences, Nanchang University, Nanchang 330031, China
- Institute of Biomedical Innovation, Jiangxi Medical College, Nanchang University, Nanchang 330031, China
| | - Yu Zhang
- School of Life Sciences, Nanchang University, Nanchang 330031, China
- Institute of Biomedical Innovation, Jiangxi Medical College, Nanchang University, Nanchang 330031, China
- School of Basic Medical Sciences, Jiangxi Medical College, Nanchang University, Nanchang 330031, China
| | - Yingxing Wang
- School of Life Sciences, Nanchang University, Nanchang 330031, China
- Institute of Biomedical Innovation, Jiangxi Medical College, Nanchang University, Nanchang 330031, China
| | - Hong Chen
- School of Life Sciences, Nanchang University, Nanchang 330031, China
- Institute of Biomedical Innovation, Jiangxi Medical College, Nanchang University, Nanchang 330031, China
| | - Liangjing Pan
- Institute of Biomedical Innovation, Jiangxi Medical College, Nanchang University, Nanchang 330031, China
- School of Basic Medical Sciences, Jiangxi Medical College, Nanchang University, Nanchang 330031, China
| | - Xufeng Liao
- School of Life Sciences, Nanchang University, Nanchang 330031, China
- Institute of Biomedical Innovation, Jiangxi Medical College, Nanchang University, Nanchang 330031, China
| | - Shunqi Wang
- School of Life Sciences, Nanchang University, Nanchang 330031, China
- Institute of Biomedical Innovation, Jiangxi Medical College, Nanchang University, Nanchang 330031, China
- School of Basic Medical Sciences, Jiangxi Medical College, Nanchang University, Nanchang 330031, China
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Vega-Torres JD, Ontiveros-Angel P, Terrones E, Stuffle EC, Solak S, Tyner E, Oropeza M, dela Peña I, Obenaus A, Ford BD, Figueroa JD. Short-term exposure to an obesogenic diet during adolescence elicits anxiety-related behavior and neuroinflammation: modulatory effects of exogenous neuregulin-1. Transl Psychiatry 2022; 12:83. [PMID: 35220393 PMCID: PMC8882169 DOI: 10.1038/s41398-022-01788-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 12/27/2021] [Accepted: 01/07/2022] [Indexed: 11/21/2022] Open
Abstract
Childhood obesity leads to hippocampal atrophy and altered cognition. However, the molecular mechanisms underlying these impairments are poorly understood. The neurotrophic factor neuregulin-1 (NRG1) and its cognate ErbB4 receptor play critical roles in hippocampal maturation and function. This study aimed to determine whether exogenous NRG1 administration reduces hippocampal abnormalities and neuroinflammation in rats exposed to an obesogenic Western-like diet (WD). Lewis rats were randomly divided into four groups (12 rats/group): (1) control diet+vehicle (CDV); (2) CD + NRG1 (CDN) (daily intraperitoneal injections: 5 μg/kg/day; between postnatal day, PND 21-PND 41); (3) WD + VEH (WDV); (4) WD + NRG1 (WDN). Neurobehavioral assessments were performed at PND 43-49. Brains were harvested for MRI and molecular analyses at PND 49. We found that NRG1 administration reduced hippocampal volume (7%) and attenuated hippocampal-dependent cued fear conditioning in CD rats (56%). NRG1 administration reduced PSD-95 protein expression (30%) and selectively reduced hippocampal cytokine levels (IL-33, GM-CSF, CCL-2, IFN-γ) while significantly impacting microglia morphology (increased span ratio and reduced circularity). WD rats exhibited reduced right hippocampal volume (7%), altered microglia morphology (reduced density and increased lacunarity), and increased levels of cytokines implicated in neuroinflammation (IL-1α, TNF-α, IL-6). Notably, NRG1 synergized with the WD to increase hippocampal ErbB4 phosphorylation and the tumor necrosis alpha converting enzyme (TACE/ADAM17) protein levels. Although the results did not provide sufficient evidence to conclude that exogenous NRG1 administration is beneficial to alleviate obesity-related outcomes in adolescent rats, we identified a potential novel interaction between obesogenic diet exposure and TACE/ADAM17-NRG1-ErbB4 signaling during hippocampal maturation. Our results indicate that supraoptimal ErbB4 activities may contribute to the abnormal hippocampal structure and cognitive vulnerabilities observed in obese individuals.
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Affiliation(s)
- Julio David Vega-Torres
- grid.43582.380000 0000 9852 649XCenter for Health Disparities and Molecular Medicine and Department of Basic Sciences, Physiology Division, Department of Basic Sciences, Loma Linda University Health School of Medicine, Loma Linda, CA USA
| | - Perla Ontiveros-Angel
- grid.43582.380000 0000 9852 649XCenter for Health Disparities and Molecular Medicine and Department of Basic Sciences, Physiology Division, Department of Basic Sciences, Loma Linda University Health School of Medicine, Loma Linda, CA USA
| | - Esmeralda Terrones
- grid.43582.380000 0000 9852 649XCenter for Health Disparities and Molecular Medicine and Department of Basic Sciences, Physiology Division, Department of Basic Sciences, Loma Linda University Health School of Medicine, Loma Linda, CA USA
| | - Erwin C. Stuffle
- grid.43582.380000 0000 9852 649XCenter for Health Disparities and Molecular Medicine and Department of Basic Sciences, Physiology Division, Department of Basic Sciences, Loma Linda University Health School of Medicine, Loma Linda, CA USA
| | - Sara Solak
- grid.43582.380000 0000 9852 649XDepartment of Pharmaceutical and Administrative Sciences, Loma Linda University Health School of Pharmacy, Loma Linda, CA USA
| | - Emma Tyner
- grid.43582.380000 0000 9852 649XDepartment of Pharmaceutical and Administrative Sciences, Loma Linda University Health School of Pharmacy, Loma Linda, CA USA
| | - Marie Oropeza
- grid.43582.380000 0000 9852 649XDepartment of Pharmaceutical and Administrative Sciences, Loma Linda University Health School of Pharmacy, Loma Linda, CA USA
| | - Ike dela Peña
- grid.43582.380000 0000 9852 649XDepartment of Pharmaceutical and Administrative Sciences, Loma Linda University Health School of Pharmacy, Loma Linda, CA USA
| | - Andre Obenaus
- grid.266093.80000 0001 0668 7243Department of Pediatrics, University of California-Irvine, Irvine, CA USA
| | - Byron D. Ford
- grid.266097.c0000 0001 2222 1582Division of Biomedical Sciences, University of California-Riverside School of Medicine, Riverside, CA USA
| | - Johnny D. Figueroa
- grid.43582.380000 0000 9852 649XCenter for Health Disparities and Molecular Medicine and Department of Basic Sciences, Physiology Division, Department of Basic Sciences, Loma Linda University Health School of Medicine, Loma Linda, CA USA
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Smita RM, Shuvo APR, Raihan S, Jahan R, Simin FA, Rahman A, Biswas S, Salem L, Sagor MAT. The Role of Mineral Deficiencies in Insulin Resistance and Obesity. Curr Diabetes Rev 2022; 18:e171121197987. [PMID: 34789132 DOI: 10.2174/1573399818666211117104626] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 05/06/2021] [Accepted: 07/02/2021] [Indexed: 11/22/2022]
Abstract
Minerals are critical for maintaining overall health. These tiny chemical compounds are responsible for enzymatic activation, maintaining healthy teeth and bones, regulating energy metabolism, enhancing immunity, and aiding muscle and brain function. However, mineral deficiency in the form of inadequate or under nourished intake affects millions of people throughout the world, with well-documented adverse health consequences of malnutrition. Conversely, mineral deficiency may also be a risk factor for Insulin Resistance (IR) and obesity. This review focuses on another, more "less discussed" form of malnutrition, namely mineral deficiency and its contribution to metabolic disorders. At the cellular level, minerals maintain not only molecular communication but also trigger several key biochemical pathways. Disturbances in these processes due to mineral insufficiency may gradually lead to metabolic disorders such as insulin resistance, pre-diabetes, and central obesity, which might lead to renal failure, cardiac arrest, hepatic carcinoma, and various neurodegenerative diseases. Here we discuss the burden of disease promoted by mineral deficiencies and the medical, social, and economic consequences. Mineral deficiency-mediated IR and obesity have a considerable negative impact on individual well-being, physical consideration, and economic productivity. We discuss possible molecular mechanisms of mineral deficiency that may lead to IR and obesity and suggest strategies to counter these metabolic disorders. To protect mankind from mineral nutrient deficiencies, the key is to take a variety of foods in reasonable quantities, such as organic and pasture-raised eggs, low fat dairy, and grass-fed and finished meats, insecticide, and pesticide-free vegetables and fruits.
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Affiliation(s)
| | | | - Sabbir Raihan
- Department of Pharmaceutical Sciences, North South University, Dhaka, Bangladesh
| | - Rajib Jahan
- Department of Pharmaceutical Sciences, North South University, Dhaka, Bangladesh
| | - Faria Anjum Simin
- Department of Pharmaceutical Sciences, North South University, Dhaka, Bangladesh
| | - Ashiqur Rahman
- Department of Pharmaceutical Sciences, North South University, Dhaka, Bangladesh
| | - Soumick Biswas
- Department of Pharmaceutical Sciences, North South University, Dhaka, Bangladesh
| | - Liyad Salem
- Department of Pharmaceutical Sciences, North South University, Dhaka, Bangladesh
| | - Md Abu Taher Sagor
- Department of Pharmaceutical Sciences, North South University, Dhaka, Bangladesh
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Guerra S, Chung R, Yerbury J, Karl T. Behavioural effects of cage systems on the G93A Superoxide Dismutase 1 transgenic mouse model for amyotrophic lateral sclerosis. GENES BRAIN AND BEHAVIOR 2021; 20:e12735. [PMID: 33871173 DOI: 10.1111/gbb.12735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 03/25/2021] [Accepted: 04/16/2021] [Indexed: 11/28/2022]
Abstract
Environmental factors inherent to animal facilities can impact on the neuro-behavioural phenotype of laboratory mice and genetic mouse models for human diseases. Many facilities have upgraded from traditional 'open filter top' cages (FT) to individually ventilated cage (IVC) systems, which have been shown to modify various behavioural responses of laboratory mice. Importantly, the impact of IVC housing on the G93A superoxide dismutase 1 mouse model of amyotrophic lateral sclerosis (ALS) is currently unknown. Male and female wild type-like (WT) and heterozygous SOD1G93A mice were group-housed in FT or IVC systems from PND 30 ± 5 onwards. Body weight and motor function were assessed weekly from 15 weeks onward. Mice were also tested for cognitive abilities (i.e., fear conditioning and social recognition memory) and sensorimotor gating (i.e., prepulse inhibition: PPI). SOD1G93A mice lost body weight, and their motor function degenerated over time compared with control littermates. Motor impairments developed faster when SOD1G93A females were housed in IVCs. Context and cue freezing were increased in SOD1G93A females compared with controls, whereas all SOD1G93A mice exhibited lower acoustic startle and PPI than WT mice. IVC housing led to an increase in cue freezing in males and reduced the severity of PPI deficits in SOD1G93A females. Overall, IVC housing impacted moderately on the SOD1G93A phenotype but central behavioural deficits were still evident across housing conditions. Nonetheless, our findings indicate the importance of assessing the effect of cage system in genetic mouse models as these systems can modulate the magnitude and onset of genotypic differences.
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Affiliation(s)
- Stefan Guerra
- School of Medicine, Western Sydney University, Campbelltown, New South Wales, Australia
| | - Roger Chung
- Centre for MND Research, Macquarie University, Sydney, New South Wales, Australia
| | - Justin Yerbury
- Faculty of Science, Medicine and Health, University of Wollongong, Wollongong, New South Wales, Australia
| | - Tim Karl
- School of Medicine, Western Sydney University, Campbelltown, New South Wales, Australia.,Neuroscience Research Australia, Randwick, New South Wales, Australia
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Effects of handling on the behavioural phenotype of the neuregulin 1 type III transgenic mouse model for schizophrenia. Behav Brain Res 2021; 405:113166. [PMID: 33588020 DOI: 10.1016/j.bbr.2021.113166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 01/14/2021] [Accepted: 02/02/2021] [Indexed: 02/07/2023]
Abstract
Handling of laboratory mice affects animal wellbeing and behavioural test outcomes. However, present research has focused on handling effects in common strains of laboratory mice despite the knowledge that environmental factors can modify established phenotypes of genetic mouse models. Thus, we examined the impact of handling on the face validity of a transgenic mouse model for the schizophrenia risk gene neuregulin 1 (i.e. Nrg1 type III overexpression). Nrg1 III tg and wild type-like (WT) control mice of both sexes underwent tail or tunnel handling before being assessed in the open field (OF), elevated plus maze (EPM), social preference/novelty, prepulse inhibition, and fear conditioning tests. Tunnel-handling reduced the startle response in all mice, increased OF locomotion and exploration in males and reduced anxiety in males (OF) and females (EPM) compared to tail-handling. Importantly, tunnel handling induced a more pronounced startle response to increasing startle stimuli in Nrg1 III tg females compared to respective controls, a phenomenon absent in tail-handled females. Finally, Nrg1 III tg males displayed reduced OF exploration and centre locomotion and Nrg1 III tg females displayed increased cue freezing over time compared to controls. In conclusion, handling methods have a significant impact on a variety of behavioural domains thus the impact of routine handling procedures need be considered when testing behavioural phenotypes. Handling did not change the main schizophrenia-relevant characteristics of Nrg1 III tg mice but affected the acoustic startle-response in a genotype- and sex-specific manner. Future research should evaluate the effect of handling on other genetic models.
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Chen X, Chen C, Ji F, Xu Y, Wang W, Lin X, Jiang D, Song X, Gao X, Tian H, Zhuo C, Zhang J. Irreversible Primary Visual Cortex Impairment in a Mouse Model of High-Risk Schizophrenia. Neuropsychiatr Dis Treat 2021; 17:277-282. [PMID: 33542631 PMCID: PMC7853429 DOI: 10.2147/ndt.s246163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 12/29/2020] [Indexed: 11/23/2022] Open
Abstract
PURPOSE Although visual deficits can be observed at any stage of schizophrenia, few studies have focused on visual cortex alterations in individuals at high risk of schizophrenia. This study aimed to investigate the pathological changes of the primary visual cortex in a prenatal mouse model of MK801-induced high-risk schizophrenia. METHODS The high-risk schizophrenia model was generated by MK801 injection into pregnant mice. The male offspring without schizophrenia-like behaviors in early adulthood were defined as the high-risk mouse model of schizophrenia (HRMMS) and divided into two groups. One HRMMS group received the antipsychotic agent risperidone beginning at postnatal week 4 and another group did not receive any treatment. After treatment for 4 weeks, in vivo two-photon calcium imaging was performed to characterize the primary visual cortex activity. The novel object recognition test and the prepulse inhibition apparatus test were also implemented to assess the cognitive and behavioral performance, respectively. RESULTS Both groups of HRMMS mice, with or without antipsychotic treatment, had decreased neuronal calcium activity, demonstrating primary visual cortex impairment. More notably, antipsychotic treatment did not normalize the impaired neuronal activities in the primary visual cortex. Correspondingly, the treatment did not improve the cognitive or behavioral impairment. CONCLUSION Visual cortex impairment might be a prominent feature of individuals at high risk of schizophrenia that cannot be normalized by early treatment with antipsychotic medication, indicating the presence of independent regulatory pathways for visual perception disturbance in schizophrenia. Thus, visual system impairment in schizophrenic patients must be further studied.
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Affiliation(s)
- Xinying Chen
- Psychiatric-Neuroimaging-Genetics-Comorbidity Laboratory (PNGC_Lab), Tianjin Mental Health Centre, Mental Health Teaching Hospital of Tianjin Medical University, Tianjin Anding Hospital, Tianjin 300222, People's Republic of China
| | - Ce Chen
- Psychiatric-Neuroimaging-Genetics Laboratory, Wenzhou Seventh People's Hospital, Wenzhou, Zhejiang Province 325000, People's Republic of China
| | - Feng Ji
- Department of Psychiatry, School of Mental Health, Jining Medical University, Jining 272119, Shandong Province, People's Republic of China
| | - Yong Xu
- Department of Psychiatry, First Hospital/First Clinical Medical College of Shanxi Medical University, MDT Center for Cognitive Impairment and Sleep Disorders, First Hospital of Shanxi Medical University, Taiyuan 030001, People's Republic of China
| | - Wenqiang Wang
- Co-Collaboration Laboratory of China and Canada, Xiamen Xianyue Hospital and University of Alberta, Xiamen 361000, People's Republic of China
| | - Xiaodong Lin
- Psychiatric-Neuroimaging-Genetics Laboratory, Wenzhou Seventh People's Hospital, Wenzhou, Zhejiang Province 325000, People's Republic of China
| | - Deguo Jiang
- Psychiatric-Neuroimaging-Genetics Laboratory, Wenzhou Seventh People's Hospital, Wenzhou, Zhejiang Province 325000, People's Republic of China
| | - Xueqin Song
- The First Affiliated Hospital/Zhengzhou University, Biological Psychiatry International Joint Laboratory of Henan/Zhengzhou University, Henan Psychiatric Transformation Research Key Laboratory/Zhengzhou University, Zhengzhou 450052, People's Republic of China
| | - Xiangyang Gao
- Health Management Institute, Center for Statistical Analysis of Medical Data, Medical Big Data Analysis Center, Chinese PLA General Hospital, Beijing 100191, People's Republic of China
| | - Hongjun Tian
- Department of Neurology and Psychiatry Biological Imaging Laboratory (NPBI_Lab), Tianjin Fourth Center Hospital, Tianjin 200024, People's Republic of China
| | - Chuanjun Zhuo
- Department of Neurology and Psychiatry Biological Imaging Laboratory (NPBI_Lab), Tianjin Fourth Center Hospital, Tianjin 200024, People's Republic of China
| | - Jingliang Zhang
- Department of Psychiatry, Wenzhou Kangning Hospital, Wenzhou, Zhejiang Province 325007, People's Republic of China
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Chen X, Cai Z, Ji F, Lin X, Jiang D, Lin C, Ma X, Xu Y, Wang W, Zheng L, Chen C, Zhuo C. Paroxetine can improve primary visual cortex activity in a high-risk mouse model of schizophrenia. BIOTECHNOL BIOTEC EQ 2020. [DOI: 10.1080/13102818.2020.1837009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Affiliation(s)
- Xinying Chen
- Department of Psychiatric-Neuroimging-Genetics and Comorbidity Laboratory (PNGC_Lab), Tianjin Anding Hospital, Tianjin, PR China
| | - Ziyao Cai
- Department of Psychiatry and Micro-imaging Centre, Wenzhou Seventh People’s Hospital, Wenzhou, PR China
| | - Feng Ji
- Department of Psychiatry, School of Mental Health, Jining Medical University, Jining, PR China
| | - Xiaodong Lin
- Department of Psychiatry and Micro-imaging Centre, Wenzhou Seventh People’s Hospital, Wenzhou, PR China
| | - Deguo Jiang
- Department of Psychiatry and Micro-imaging Centre, Wenzhou Seventh People’s Hospital, Wenzhou, PR China
| | - Chongguang Lin
- Department of Psychiatry and Micro-imaging Centre, Wenzhou Seventh People’s Hospital, Wenzhou, PR China
| | - Xiaoyan Ma
- Department of Psychiatric-Neuroimging-Genetics and Comorbidity Laboratory (PNGC_Lab), Tianjin Anding Hospital, Tianjin, PR China
| | - Yong Xu
- Department of Psychiatry, First Hospital/First Clinical Medical College of Shanxi Medical University, Taiyuan, PR China
- MDT Center for Cognitive Impairment and Sleep Disorders, First Hospital of Shanxi Medical University, Taiyuan, PR China
| | - Wenqiang Wang
- Canada and China Joint Laboratory of Biological Psychiatry, Xiamen Xianye Hospital, Xiamen, Fujian, PR China
| | - Lidan Zheng
- Department of Psychiatric-Neuroimging-Genetics and Comorbidity Laboratory (PNGC_Lab), Tianjin Anding Hospital, Tianjin, PR China
| | - Ce Chen
- Department of Psychiatric-Neuroimging-Genetics and Comorbidity Laboratory (PNGC_Lab), Tianjin Anding Hospital, Tianjin, PR China
| | - Chuanjun Zhuo
- Department of Psychiatric-Neuroimging-Genetics and Comorbidity Laboratory (PNGC_Lab), Tianjin Anding Hospital, Tianjin, PR China
- Department of Psychiatry and Micro-imaging Centre, Wenzhou Seventh People’s Hospital, Wenzhou, PR China
- Department of Psychiatry, School of Mental Health, Jining Medical University, Jining, PR China
- Key Laboratory of Real Time Brain Circuits Tracing Of Neurology and Psychiatry (RTBNB_Lab), Tianjin fourth center Hospital, Tianjin Medical affiliated Tianjin Fourth Central Hospital, Nankai University affiliated Tianjin Fourth Center Hospital, Tianjin, PR China
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