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Takahashi T, Sasabayashi D, Takayanagi Y, Furuichi A, Kobayashi H, Yuasa Y, Noguchi K, Suzuki M. Gross anatomical features of the insular cortex in schizophrenia and schizotypal personality disorder: Potential relationships with vulnerability, illness stages, and clinical subtypes. Front Psychiatry 2022; 13:1050712. [PMID: 36465304 PMCID: PMC9715601 DOI: 10.3389/fpsyt.2022.1050712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 11/07/2022] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION Patients with schizophrenia have a higher number of insular gyri; however, it currently remains unclear whether the brain characteristics of patients with schizotypal personality disorder (SPD), a mild form of schizophrenia, are similar. It is also unknown whether insular gross anatomical features are associated with the illness stages and clinical subtypes of schizophrenia. MATERIALS AND METHODS This magnetic resonance imaging study examined gross anatomical variations in the insular cortex of 133 patients with schizophrenia, 47 with SPD, and 88 healthy controls. The relationships between the insular gross anatomy and schizophrenia subgroups (71 first-episode and 58 chronic groups, 38 deficit and 37 non-deficit subtype groups) were also investigated. RESULTS The number of insular gyri was higher in the schizophrenia and SPD patients than in the controls, where the patients were characterized by well-developed accessory, middle short, and posterior long insular gyri. The insular gross anatomy did not significantly differ between the first-episode and chronic schizophrenia subgroups; however, the relationship between the developed accessory gyrus and more severe positive symptoms was specific to the first-episode group. The prevalence of a right middle short gyrus was higher in the deficit schizophrenia group than in the non-deficit group. DISCUSSION These findings suggest that schizophrenia and SPD patients may share an altered insular gross morphology as a vulnerability factor associated with early neurodevelopmental anomalies, which may also contribute to positive symptomatology in the early illness stages and clinical subtypes of schizophrenia.
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Affiliation(s)
- Tsutomu Takahashi
- Department of Neuropsychiatry, University of Toyama Graduate School of Medicine and Pharmaceutical Sciences, Toyama, Japan.,Research Center for Idling Brain Science, University of Toyama, Toyama, Japan
| | - Daiki Sasabayashi
- Department of Neuropsychiatry, University of Toyama Graduate School of Medicine and Pharmaceutical Sciences, Toyama, Japan.,Research Center for Idling Brain Science, University of Toyama, Toyama, Japan
| | - Yoichiro Takayanagi
- Department of Neuropsychiatry, University of Toyama Graduate School of Medicine and Pharmaceutical Sciences, Toyama, Japan.,Arisawabashi Hospital, Toyama, Japan
| | - Atsushi Furuichi
- Department of Neuropsychiatry, University of Toyama Graduate School of Medicine and Pharmaceutical Sciences, Toyama, Japan.,Research Center for Idling Brain Science, University of Toyama, Toyama, Japan
| | - Haruko Kobayashi
- Department of Neuropsychiatry, University of Toyama Graduate School of Medicine and Pharmaceutical Sciences, Toyama, Japan.,Research Center for Idling Brain Science, University of Toyama, Toyama, Japan
| | - Yusuke Yuasa
- Department of Neuropsychiatry, University of Toyama Graduate School of Medicine and Pharmaceutical Sciences, Toyama, Japan.,Research Center for Idling Brain Science, University of Toyama, Toyama, Japan
| | - Kyo Noguchi
- Department of Radiology, University of Toyama Graduate School of Medicine and Pharmaceutical Sciences, Toyama, Japan
| | - Michio Suzuki
- Department of Neuropsychiatry, University of Toyama Graduate School of Medicine and Pharmaceutical Sciences, Toyama, Japan.,Research Center for Idling Brain Science, University of Toyama, Toyama, Japan
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2
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Attademo L, Bernardini F, Verdolini N. Neural Correlates of Schizotypal Personality Disorder: a Systematic Review of Neuroimaging and EEG Studies. Curr Med Imaging 2021; 17:1283-1298. [PMID: 33459241 DOI: 10.2174/1573405617666210114142206] [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] [Received: 07/07/2020] [Revised: 10/20/2020] [Accepted: 11/12/2020] [Indexed: 01/22/2023]
Abstract
BACKGROUND Schizotypal personality disorder (SPD) is a cluster A personality disorder affecting 1.0% of general population, characterised by disturbances in cognition and reality testing dimensions, affect regulation, and interpersonal function. SPD shares similar but attenuated phenomenological, genetic, and neurobiological abnormalities with schizophrenia (SCZ) and is described as part of schizophrenia spectrum disorders. OBJECTIVE Aim of this work was to identify the major neural correlates of SPD. METHODS This is a systematic review conducted according to PRISMA statement. The protocol was prospectively registered in PROSPERO - International prospective register of systematic reviews. The review was performed to summarise the most comprehensive and updated evidence on functional neuroimaging and neurophysiology findings obtained through different techniques (DW-MRI, DTI, PET, SPECT, fMRI, MRS, EEG) in individuals with SPD. RESULTS Of the 52 studies included in this review, 9 were on DW-MRI and DTI, 11 were on PET and SPECT, 11 were on fMRI and MRS, and 21 were on EEG. It was complex to synthesise all the functional abnormalities found into a single, unified, pathogenetic pathway, but a common theme emerged: the dysfunction of brain circuits including striatal, frontal, temporal, limbic regions (and their networks) together with a dysregulation along the dopaminergic pathways. CONCLUSION Brain abnormalities in SPD are similar, but less marked, than those found in SCZ. Furthermore, different patterns of functional abnormalities in SPD and SCZ have been found, confirming the previous literature on the 'presence' of possible compensatory factors, protecting individuals with SPD from frank psychosis and providing diagnostic specificity.
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Affiliation(s)
- Luigi Attademo
- Hospital Psychiatric Service for Diagnosis and Care (S.P.D.C.) of Potenza, Department of Mental Health, ASP Basilicata, Italian National Health Service, Potenza. Italy
| | - Francesco Bernardini
- Hospital Psychiatric Service for Diagnosis and Care (S.P.D.C.) of Pordenone, Department of Mental Health, AsFO Friuli Occidentale, Italian National Health Service, Pordenone. Italy
| | - Norma Verdolini
- Barcelona Bipolar Disorders Program, Hospital Clinic, Institute of Neuroscience, University of Barcelona, IDIBAPS, CIBERSAM, 170 Villarroel st., Barcelona, Catalunya. Spain
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3
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Kokubun K, Ogata Y, Koike Y, Yamakawa Y. Brain condition may mediate the association between training and work engagement. Sci Rep 2020; 10:6848. [PMID: 32321951 PMCID: PMC7176729 DOI: 10.1038/s41598-020-63711-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 04/03/2020] [Indexed: 11/08/2022] Open
Abstract
Over the past two decades, the number of studies on work engagement has increased rapidly. Work engagement refers to a positive, affective-motivational state of high energy combined with high levels of dedication and a strong focus on work, leading to various work-related outcomes, including higher work performance. Several studies have indicated that training or coaching may increase work engagement, but other studies have shown contradicting results. These inconsistencies may be due to the indirectness between training/coaching and work engagement. Therefore, we investigated the relationship between training and brain structure as well as between brain structure and work engagement in cognitively normal participants. Brain structure was assessed using neuroimaging-derived measures, including the gray-matter brain healthcare quotient (GM-BHQ) and the fractional-anisotropy brain healthcare quotient (FA-BHQ), which are approved as the international standard (H.861.1) by ITU-T. Work engagement was assessed using the Utrecht Work Engagement Scale. To validate and enrich the analysis, we employed another two representative questionnaires, which are known to be close to but different from work engagement: The Social interaction Anxiety Scale and the Maslach Burnout Inventory-General Survey to gauge the levels of human relation ineffectiveness and burnout. The latter scale is subdivided into three variables including "Exhaustion," "Cynicism," and "Professional Efficacy." The results of the present study indicate that training is associated with an increase of FA-BHQ scores, and that an increase of the FA-BHQ scores is associated with an increase in Work Engagement and a decrease in Cynicism. On the other hand, the training with coaching was associated with a decrease in Interaction Anxiety. However, no correlation was observed for training with Work Engagement or the subscales of Burnout. Likewise, no correlation was observed for FA-BHQ with Exhaustion, Professional Efficacy, and Interaction Anxiety. The results of the current research provide the possibility to use brain information to evaluate training effectiveness from the viewpoint of neuroscience.
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Affiliation(s)
- Keisuke Kokubun
- Office of Society-Academia Collaboration for Innovation, Kyoto University, Kyoto, Japan.
| | - Yousuke Ogata
- Institute of Innovative Research, Tokyo Institute of Technology, Meguro, Tokyo, Japan
| | - Yasuharu Koike
- Institute of Innovative Research, Tokyo Institute of Technology, Meguro, Tokyo, Japan
| | - Yoshinori Yamakawa
- Office of Society-Academia Collaboration for Innovation, Kyoto University, Kyoto, Japan
- Institute of Innovative Research, Tokyo Institute of Technology, Meguro, Tokyo, Japan
- ImPACT Program of Council for Science, Technology and Innovation (Cabinet Office, Government of Japan), Chiyoda, Tokyo, Japan
- Office for Academic and Industrial Innovation, Kobe University, Kobe, Japan
- NTT Data Institute of Management Consulting, Inc., Kobe, Japan
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4
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Chu WL, Huang MW, Jian BL, Cheng KS. Brain Structural Magnetic Resonance Imaging for Joint Independent Component Analysis in Schizophrenic Patients. Curr Med Imaging 2020; 15:471-478. [PMID: 32008554 DOI: 10.2174/1573405613666171122163759] [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] [Received: 09/15/2017] [Revised: 10/24/2017] [Accepted: 11/14/2017] [Indexed: 11/22/2022]
Abstract
BACKGROUND In past magnetic resonance imaging studies, normal participants and schizophrenia patients have usually been compared using imaging processing modes with only one parameter. A more extensive evaluation of significant differences between gray and white matter in Schizophrenic patents was necessary. METHODS Voxel based morphometry was used to separate brain images into gray matter and white matter. Then, the images were mapped to Montreal Neurological Institute space, and DARTEL analytic template was applied for image calibration with statistical parametric mapping. Finally, joint independent component analysis was employed to analyze the gray and white matter of brain images from Schizophrenic patients and normal controls. In this study, joint independent component analysis was used to discriminate clinical differences in magnetic resonance imaging signals between Schizophrenic patients and normal controls. RESULTS Region of interest analyses has repeatedly shown gray matter reduction in the superior temporal gyrus of Schizophrenic patients. CONCLUSION These results strongly support previous studies regarding brain volume in schizophrenic patients. The connection networks in frontal and temporal lobes evidently did not differ between normal participants and schizophrenia patients.
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Affiliation(s)
- Wen-Lin Chu
- Department of Biomedical Engineering, National Cheng Kung University, Tainan 701, Taiwan
| | - Min-Wei Huang
- Department of Psychiatry, Taichung Veterans General Hospital, Chiayi Branch, Chia-Yi 600, Taiwan
| | - Bo-Lin Jian
- Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan 701, Taiwan
| | - Kuo-Sheng Cheng
- Department of Biomedical Engineering, National Cheng Kung University, Tainan 701, Taiwan
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Briggs RG, Rahimi M, Conner AK, Sali G, Baker CM, Burks JD, Glenn CA, Battiste JD, Sughrue ME. A Connectomic Atlas of the Human Cerebrum-Chapter 15: Tractographic Description of the Uncinate Fasciculus. Oper Neurosurg (Hagerstown) 2019; 15:S450-S455. [PMID: 30260439 DOI: 10.1093/ons/opy269] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 09/18/2018] [Indexed: 11/14/2022] Open
Abstract
In this supplement, we show a comprehensive anatomic atlas of the human cerebrum demonstrating all 180 distinct regions comprising the cerebral cortex. The location, functional connectivity, and structural connectivity of these regions are outlined, and where possible a discussion is included of the functional significance of these areas. In this chapter, we specifically address the regions integrating to form the uncinate fasciculus.
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Affiliation(s)
- Robert G Briggs
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Meherzad Rahimi
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Andrew K Conner
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Goksel Sali
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Cordell M Baker
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Joshua D Burks
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Chad A Glenn
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - James D Battiste
- Department of Neurology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Michael E Sughrue
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma.,Department of Neurosurgery, Prince of Wales Private Hospital, Sydney, Australia
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Kristensen TD, Mandl RCW, Raghava JM, Jessen K, Jepsen JRM, Fagerlund B, Glenthøj LB, Wenneberg C, Krakauer K, Pantelis C, Nordentoft M, Glenthøj BY, Ebdrup BH. Widespread higher fractional anisotropy associates to better cognitive functions in individuals at ultra-high risk for psychosis. Hum Brain Mapp 2019; 40:5185-5201. [PMID: 31430023 PMCID: PMC6864899 DOI: 10.1002/hbm.24765] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2019] [Accepted: 08/02/2019] [Indexed: 12/15/2022] Open
Abstract
In schizophrenia patients, cognitive functions appear linked to widespread alterations in cerebral white matter microstructure. Here we examine patterns of associations between regional white matter and cognitive functions in individuals at ultra-high risk for psychosis. One hundred and sixteen individuals at ultra-high risk for psychosis and 49 matched healthy controls underwent 3 T magnetic resonance diffusion-weighted imaging and cognitive assessments. Group differences on fractional anisotropy were tested using tract-based spatial statistics. Group differences in cognitive functions, voxel-wise as well as regional fractional anisotropy were tested using univariate general linear modeling. Multivariate partial least squares correlation analyses tested for associations between patterns of regional fractional anisotropy and cognitive functions. Univariate analyses revealed significant impairments on cognitive functions and lower fractional anisotropy in superior longitudinal fasciculus and cingulate gyrus in individuals at ultra-high risk for psychosis. Partial least squares correlation analysis revealed different associations between patterns of regional fractional anisotropy and cognitive functions in individuals at ultra-high risk for psychosis compared to healthy controls. Widespread higher fractional anisotropy was associated with better cognitive functioning for individuals at ultra-high risk for psychosis, but not for the healthy controls. Furthermore, patterns of cognitive functions were associated with an interaction-effect on regional fractional anisotropy in fornix, medial lemniscus, uncinate fasciculus, and superior cerebellar peduncle. Aberrant associations between patterns of cognitive functions to white matter may be explained by dysmyelination.
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Affiliation(s)
- Tina D Kristensen
- Copenhagen Research Center for Mental Health, CORE, Mental Health Centre Copenhagen, University of Copenhagen, Hellerup, Denmark.,Center for Clinical Intervention and Neuropsychiatric Schizophrenia Research, CINS, and Center for Neuropsychiatric Schizophrenia Research, CNSR, Mental Health Centre Glostrup, University of Copenhagen, Glostrup, Denmark
| | - René C W Mandl
- Center for Clinical Intervention and Neuropsychiatric Schizophrenia Research, CINS, and Center for Neuropsychiatric Schizophrenia Research, CNSR, Mental Health Centre Glostrup, University of Copenhagen, Glostrup, Denmark.,University Medical Center Utrecht Brain Center, Utrecht, the Netherlands
| | - Jayachandra M Raghava
- Center for Clinical Intervention and Neuropsychiatric Schizophrenia Research, CINS, and Center for Neuropsychiatric Schizophrenia Research, CNSR, Mental Health Centre Glostrup, University of Copenhagen, Glostrup, Denmark.,Functional Imaging Unit, Department of Clinical Physiology, Nuclear Medicine and PET, University of Copenhagen, Glostrup, Denmark
| | - Kasper Jessen
- Center for Clinical Intervention and Neuropsychiatric Schizophrenia Research, CINS, and Center for Neuropsychiatric Schizophrenia Research, CNSR, Mental Health Centre Glostrup, University of Copenhagen, Glostrup, Denmark
| | - Jens Richardt M Jepsen
- Center for Clinical Intervention and Neuropsychiatric Schizophrenia Research, CINS, and Center for Neuropsychiatric Schizophrenia Research, CNSR, Mental Health Centre Glostrup, University of Copenhagen, Glostrup, Denmark.,Child and Adolescent Mental Health Centre, Mental Health Services, Capital Region of Denmark, University of Copenhagen, Hellerup, Denmark
| | - Birgitte Fagerlund
- Center for Clinical Intervention and Neuropsychiatric Schizophrenia Research, CINS, and Center for Neuropsychiatric Schizophrenia Research, CNSR, Mental Health Centre Glostrup, University of Copenhagen, Glostrup, Denmark.,Department of Psychology, Faculty of Social Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Louise B Glenthøj
- Copenhagen Research Center for Mental Health, CORE, Mental Health Centre Copenhagen, University of Copenhagen, Hellerup, Denmark.,Center for Clinical Intervention and Neuropsychiatric Schizophrenia Research, CINS, and Center for Neuropsychiatric Schizophrenia Research, CNSR, Mental Health Centre Glostrup, University of Copenhagen, Glostrup, Denmark
| | - Christina Wenneberg
- Copenhagen Research Center for Mental Health, CORE, Mental Health Centre Copenhagen, University of Copenhagen, Hellerup, Denmark.,Center for Clinical Intervention and Neuropsychiatric Schizophrenia Research, CINS, and Center for Neuropsychiatric Schizophrenia Research, CNSR, Mental Health Centre Glostrup, University of Copenhagen, Glostrup, Denmark
| | - Kristine Krakauer
- Center for Clinical Intervention and Neuropsychiatric Schizophrenia Research, CINS, and Center for Neuropsychiatric Schizophrenia Research, CNSR, Mental Health Centre Glostrup, University of Copenhagen, Glostrup, Denmark
| | - Christos Pantelis
- Center for Clinical Intervention and Neuropsychiatric Schizophrenia Research, CINS, and Center for Neuropsychiatric Schizophrenia Research, CNSR, Mental Health Centre Glostrup, University of Copenhagen, Glostrup, Denmark.,Melbourne Neuropsychiatry Center, MNC, The University of Melbourne, Melbourne, Australia
| | - Merete Nordentoft
- Copenhagen Research Center for Mental Health, CORE, Mental Health Centre Copenhagen, University of Copenhagen, Hellerup, Denmark.,Center for Clinical Intervention and Neuropsychiatric Schizophrenia Research, CINS, and Center for Neuropsychiatric Schizophrenia Research, CNSR, Mental Health Centre Glostrup, University of Copenhagen, Glostrup, Denmark.,Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Birte Y Glenthøj
- Center for Clinical Intervention and Neuropsychiatric Schizophrenia Research, CINS, and Center for Neuropsychiatric Schizophrenia Research, CNSR, Mental Health Centre Glostrup, University of Copenhagen, Glostrup, Denmark.,Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Bjørn H Ebdrup
- Center for Clinical Intervention and Neuropsychiatric Schizophrenia Research, CINS, and Center for Neuropsychiatric Schizophrenia Research, CNSR, Mental Health Centre Glostrup, University of Copenhagen, Glostrup, Denmark.,Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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7
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Lai H, Wang S, Zhao Y, Zhang L, Yang C, Gong Q. Brain gray matter correlates of extraversion: A systematic review and meta-analysis of voxel-based morphometry studies. Hum Brain Mapp 2019; 40:4038-4057. [PMID: 31169966 DOI: 10.1002/hbm.24684] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Revised: 04/11/2019] [Accepted: 04/23/2019] [Indexed: 02/05/2023] Open
Abstract
Extraversion is a fundamental personality dimension closely related to an individual's life outcomes and mental health. Although an increasing number of studies have attempted to identify the neurostructural markers of extraversion, the results have been highly inconsistent. The current study aimed to achieve a comprehensive understanding of brain gray matter (GM) correlates of extraversion with a systematic review and meta-analysis approach. Our review showed relatively high interstudy heterogeneity among previous findings. Our meta-analysis of whole-brain voxel-based morphometry studies revealed that extraversion was stably associated with six core brain regions. Additionally, meta-regression analyses identified brain regions where the associations of extraversion with GM volume were modulated by gender and age. The relationships between extraversion and GM structures were discussed based on three extraversion-related functional systems. Furthermore, we explained the gender and age effects. Overall, our study is the first to reveal a comprehensive picture of brain GM correlates of extraversion, and the findings may be useful for the selection of targeted brain areas for extraversion interventions.
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Affiliation(s)
- Han Lai
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, China.,Psychoradiology Research Unit of Chinese Academy of Medical Sciences, West China Hospital of Sichuan University, Chengdu, China
| | - Song Wang
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, China.,Psychoradiology Research Unit of Chinese Academy of Medical Sciences, West China Hospital of Sichuan University, Chengdu, China.,Department of Psychoradiology, Chengdu Mental Health Center, Chengdu, China
| | - Yajun Zhao
- School of Sociology and Psychology, Southwest Minzu University, Chengdu, China
| | - Lei Zhang
- Psychoradiology Research Unit of Chinese Academy of Medical Sciences, West China Hospital of Sichuan University, Chengdu, China
| | - Cheng Yang
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, China
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, China.,Psychoradiology Research Unit of Chinese Academy of Medical Sciences, West China Hospital of Sichuan University, Chengdu, China.,Department of Psychoradiology, Chengdu Mental Health Center, Chengdu, China
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8
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Wu CL, Zhong S, Chan YC, Chen HC, He Y. White-Matter Structural Connectivity in Relation to Humor Styles: An Exploratory Study. Front Psychol 2018; 9:1654. [PMID: 30233473 PMCID: PMC6131631 DOI: 10.3389/fpsyg.2018.01654] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 08/17/2018] [Indexed: 12/30/2022] Open
Abstract
To investigate the potential relationship between white matter (WM) microstructure and humor styles, diffusion tensor images of brain WM and humor style tendencies were obtained from thirty healthy adults. Using connectivity efficiency measures from graph theoretical analysis and controlling for the influence of gender, age, educational level, and the big five personality traits, we preliminarily examined the prediction of humor styles from brain network efficiency. The results showed that the local efficiency within particular brain networks positively predicted a self-enhancing humor style and negatively predicted an aggressive humor style. The node efficiency of the left superior temporal gyrus distinguished the benevolent or hostile way that individuals coped with interpersonal embarrassment. These findings from this exploratory study support the hypothesis that WM structure influences humor styles, and provide the initial evidence and implications regarding the relationship between biological mechanisms and mental health for future research.
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Affiliation(s)
- Ching-Lin Wu
- Program of Learning Sciences, National Taiwan Normal University, Taipei, Taiwan.,Institute for Research Excellence in Learning Sciences, National Taiwan Normal University, Taipei, Taiwan
| | - Suyu Zhong
- State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing, China.,IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, China
| | - Yu-Chen Chan
- Institute for Research Excellence in Learning Sciences, National Taiwan Normal University, Taipei, Taiwan.,Department of Educational Psychology and Counseling, National Tsing Hua University, Hsinchu, Taiwan.,Chinese Language and Technology Center, National Taiwan Normal University, Taipei, Taiwan
| | - Hsueh-Chih Chen
- Institute for Research Excellence in Learning Sciences, National Taiwan Normal University, Taipei, Taiwan.,Chinese Language and Technology Center, National Taiwan Normal University, Taipei, Taiwan.,Department of Educational Psychology and Counseling, National Taiwan Normal University, Taipei, Taiwan
| | - Yong He
- State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing, China.,IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, China.,Beijing Key Laboratory of Brain Imaging and Connectomics, Beijing Normal University, Beijing, China
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9
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Chan CC, Szeszko PR, Wong E, Tang CY, Kelliher C, Penner JD, Perez-Rodriguez MM, Rosell DR, McClure M, Roussos P, New AS, Siever LJ, Hazlett EA. Frontal and temporal cortical volume, white matter tract integrity, and hemispheric asymmetry in schizotypal personality disorder. Schizophr Res 2018; 197:226-232. [PMID: 29454512 PMCID: PMC8043048 DOI: 10.1016/j.schres.2018.01.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 11/29/2017] [Accepted: 01/21/2018] [Indexed: 12/29/2022]
Abstract
Abnormalities in temporal and frontal cortical volume, white matter tract integrity, and hemispheric asymmetry have been implicated in schizophrenia-spectrum disorders. Schizotypal personality disorder can provide insight into vulnerability and protective factors in these disorders without the confounds associated with chronic psychosis. However, multimodal imaging and asymmetry studies in SPD are sparse. Thirty-seven individuals with SPD and 29 healthy controls (HC) received clinical interviews and 3T magnetic resonance T1-weighted and diffusion tensor imaging scans. Mixed ANOVAs were performed on gray matter volumes of the lateral temporal regions involved in auditory and language processing and dorsolateral prefrontal cortex involved in executive functioning, as well as fractional anisotropy (FA) of prominent white matter tracts that connect frontal and temporal lobes. In the temporal lobe regions, there were no group differences in volume, but SPD had reduced right>left middle temporal gyrus volume asymmetry compared to HC and lacked the right>left asymmetry in the inferior temporal gyrus volume seen in HC. In the frontal regions, there were no differences between groups on volume or asymmetry. In the white matter tracts, SPD had reduced FA in the left sagittal stratum and superior longitudinal fasciculus, and increased right>left asymmetry in sagittal stratum FA compared to HC. In the SPD group, lower left superior longitudinal fasciculus FA was associated with greater severity of disorganization symptoms. Findings suggest that abnormities in structure and asymmetry of temporal regions and frontotemporal white matter tract integrity are implicated in SPD pathology.
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Affiliation(s)
- Chi C. Chan
- VISN 2 Mental Illness Research, Education, and Clinical Center, James J. Peters Veterans Affairs Medical Center, Bronx, NY, USA,Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA,Corresponding author at: Mental Illness Research, Education, and Clinical Center, James J. Peters VA Medical Center, 130 West Kingsbridge Road, Room 6A-41G, Bronx, NY 10468, USA, (C.C. Chan)
| | - Philip R. Szeszko
- VISN 2 Mental Illness Research, Education, and Clinical Center, James J. Peters Veterans Affairs Medical Center, Bronx, NY, USA,Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Edmund Wong
- Translational and Molecular Imaging Institute, Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Cheuk Y. Tang
- Translational and Molecular Imaging Institute, Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Caitlin Kelliher
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Justin D. Penner
- VISN 2 Mental Illness Research, Education, and Clinical Center, James J. Peters Veterans Affairs Medical Center, Bronx, NY, USA,Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - Daniel R. Rosell
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Margaret McClure
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Panos Roussos
- VISN 2 Mental Illness Research, Education, and Clinical Center, James J. Peters Veterans Affairs Medical Center, Bronx, NY, USA,Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA,Department of Genetics and Genomic Sciences and Institute for Genomics and Multiscale Biology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Antonia S. New
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Larry J. Siever
- VISN 2 Mental Illness Research, Education, and Clinical Center, James J. Peters Veterans Affairs Medical Center, Bronx, NY, USA,Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Erin A. Hazlett
- VISN 2 Mental Illness Research, Education, and Clinical Center, James J. Peters Veterans Affairs Medical Center, Bronx, NY, USA,Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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10
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Privado J, Román FJ, Saénz-Urturi C, Burgaleta M, Colom R. Gray and white matter correlates of the Big Five personality traits. Neuroscience 2017; 349:174-184. [PMID: 28259799 DOI: 10.1016/j.neuroscience.2017.02.039] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 02/14/2017] [Accepted: 02/17/2017] [Indexed: 10/20/2022]
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Via E, Orfila C, Pedreño C, Rovira A, Menchón JM, Cardoner N, Palao DJ, Soriano-Mas C, Obiols JE. Structural alterations of the pyramidal pathway in schizoid and schizotypal cluster A personality disorders. Int J Psychophysiol 2016; 110:163-170. [PMID: 27535345 DOI: 10.1016/j.ijpsycho.2016.08.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Revised: 07/21/2016] [Accepted: 08/12/2016] [Indexed: 12/14/2022]
Abstract
AIM Schizoid (ScPD) and Schizotypal (SPD) personality disorders are rare and severe disorders. They are associated with high liability to schizophrenia and present an attenuated form of its negative symptoms, which are considered a putative endophenotype for schizophrenia. The trans-diagnostic study of negative symptoms in non-psychotic populations such as ScPD/SPD might provide useful markers of a negative-symptom domain; however, little is known about their neurobiological substrates. The aim of the study was to investigate differences in gray and white matter volumes in subjects with ScPD/SPD compared to a group of healthy controls. METHODS Structural magnetic resonance images were obtained from 20 never-psychotic subjects with ScPD/SPD and 28 healthy controls. Resulting values from clusters of differences were correlated in patients with relevant clinical variables (O-LIFE scale). RESULTS ScPD/SPD presented greater bilateral white matter volume compared to healthy controls in the superior part of the corona radiata, close to motor/premotor regions, which correlated with the O-LIFE subtest of cognitive disorganization. No differences were found in regional gray matter or global gray/white matter volumes. CONCLUSION Greater volumes in motor pathways might relate to cognitive symptoms and motor alterations commonly present in schizophrenia-related disorders. Given the established link between motor signs and psychosis, structural alterations in motor pathways are suggested as a putative biomarker of a negative-symptom domain in psychosis subject to further testing.
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Affiliation(s)
- Esther Via
- Bellvitge University Hospital, Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), Barcelona, Spain; Department of Clinical Sciences, School of Medicine, University of Barcelona, Barcelona, Spain; Mental Health, Parc Taulí Sabadell-CIBERSAM, University Hospital, Sabadell, Barcelona, Spain
| | - Carles Orfila
- Bellvitge University Hospital, Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), Barcelona, Spain
| | - Carla Pedreño
- Department of Clinical and Health Psychology, Universitat Autònoma de Barcelona, Spain
| | - Antoni Rovira
- UDIAT Diagnostic Center, Corporació Sanitària Parc Taulí, Sabadell, Spain
| | - José M Menchón
- Bellvitge University Hospital, Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), Barcelona, Spain; Department of Clinical Sciences, School of Medicine, University of Barcelona, Barcelona, Spain; CIBER Salud Mental (CIBERSAM), Instituto de Salud Carlos III, Spain
| | - Narcís Cardoner
- Mental Health, Parc Taulí Sabadell-CIBERSAM, University Hospital, Sabadell, Barcelona, Spain; UDIAT Diagnostic Center, Corporació Sanitària Parc Taulí, Sabadell, Spain; Department of Psychiatry and Forensic Medicine, Universitat Autònoma de Barcelona, Spain
| | - Diego J Palao
- Mental Health, Parc Taulí Sabadell-CIBERSAM, University Hospital, Sabadell, Barcelona, Spain
| | - Carles Soriano-Mas
- Bellvitge University Hospital, Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), Barcelona, Spain; CIBER Salud Mental (CIBERSAM), Instituto de Salud Carlos III, Spain; Department of Psychobiology and Methodology of Health Sciences, Universitat Autònoma de Barcelona, Spain.
| | - Jordi E Obiols
- Department of Clinical and Health Psychology, Universitat Autònoma de Barcelona, Spain.
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12
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Liu K, Zhang T, Zhang Q, Sun Y, Wu J, Lei Y, Chu WCW, Mok VCT, Wang D, Shi L. Characterization of the Fiber Connectivity Profile of the Cerebral Cortex in Schizotypal Personality Disorder: A Pilot Study. Front Psychol 2016; 7:809. [PMID: 27303358 PMCID: PMC4884735 DOI: 10.3389/fpsyg.2016.00809] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 05/13/2016] [Indexed: 12/22/2022] Open
Abstract
Schizotypal personality disorder (SPD) is considered one of the classic disconnection syndromes. However, the specific cortical disconnectivity pattern has not been fully investigated. In this study, we aimed to explore significant alterations in whole-cortex structural connectivity in SPD individuals (SPDs) by combining the techniques of brain surface morphometry and white matter tractography. Diffusion and structural MR data were collected from 20 subjects with SPD (all males; age, 19.7 ± 0.9 years) and 18 healthy controls (all males; age, 20.3 ± 1.0 years). To measure the structural connectivity for a given unit area of the cortex, the fiber connectivity density (FiCD) value was proposed and calculated as the sum of the fractional anisotropy of all the fibers connecting to that unit area in tractography. Then, the resultant whole-cortex FiCD maps were compared in a vertex-wise manner between SPDs and controls. Compared with normal controls, SPDs showed significantly decreased FiCD in the rostral middle frontal gyrus (crossing BA 9 and BA 10) and significantly increased FiCD in the anterior part of the fusiform/inferior temporal cortex (P < 0.05, Monte Carlo simulation corrected). Moreover, the gray matter volume extracted from the left rostral middle frontal cluster was observed to be significantly greater in the SPD group (P = 0.02). Overall, this study identifies a decrease in connectivity in the left middle frontal cortex as a key neural deficit at the whole-cortex level in SPD, thus providing insight into its neuropathological basis.
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Affiliation(s)
- Kai Liu
- Department of Imaging and Interventional Radiology, The Chinese University of Hong Kong Hong Kong, China
| | - Teng Zhang
- Department of Imaging and Interventional Radiology, The Chinese University of Hong Kong Hong Kong, China
| | - Qing Zhang
- Department of Radiology, Affiliated Zhongshan Hospital of Dalian University Dalian, China
| | - Yueji Sun
- Department of Psychiatry and Behavioral Sciences, Dalian Medical University Dalian, China
| | - Jianlin Wu
- Department of Radiology, Affiliated Zhongshan Hospital of Dalian University Dalian, China
| | - Yi Lei
- Department of Radiology, The Second People's Hospital of Shenzhen Shenzhen, China
| | - Winnie C W Chu
- Department of Imaging and Interventional Radiology, The Chinese University of Hong KongHong Kong, China; Shenzhen Research Institute, The Chinese University of Hong KongShenzhen, China
| | - Vincent C T Mok
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong Hong Kong, China
| | - Defeng Wang
- Department of Imaging and Interventional Radiology, The Chinese University of Hong KongHong Kong, China; Shenzhen Research Institute, The Chinese University of Hong KongShenzhen, China; Research Center for Medical Image Computing, The Chinese University of Hong KongHong Kong, China
| | - Lin Shi
- Department of Medicine and Therapeutics, The Chinese University of Hong KongHong Kong, China; Chow Yuk Ho Technology Centre for Innovative Medicine, The Chinese University of Hong KongHong Kong, China
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13
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Teicher MH, Samson JA. Annual Research Review: Enduring neurobiological effects of childhood abuse and neglect. J Child Psychol Psychiatry 2016; 57:241-66. [PMID: 26831814 PMCID: PMC4760853 DOI: 10.1111/jcpp.12507] [Citation(s) in RCA: 617] [Impact Index Per Article: 77.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/24/2015] [Indexed: 12/17/2022]
Abstract
BACKGROUND Childhood maltreatment is the most important preventable cause of psychopathology accounting for about 45% of the population attributable risk for childhood onset psychiatric disorders. A key breakthrough has been the discovery that maltreatment alters trajectories of brain development. METHODS This review aims to synthesize neuroimaging findings in children who experienced caregiver neglect as well as from studies in children, adolescents and adults who experienced physical, sexual and emotional abuse. In doing so, we provide preliminary answers to questions regarding the importance of type and timing of exposure, gender differences, reversibility and the relationship between brain changes and psychopathology. We also discuss whether these changes represent adaptive modifications or stress-induced damage. RESULTS Parental verbal abuse, witnessing domestic violence and sexual abuse appear to specifically target brain regions (auditory, visual and somatosensory cortex) and pathways that process and convey the aversive experience. Maltreatment is associated with reliable morphological alterations in anterior cingulate, dorsal lateral prefrontal and orbitofrontal cortex, corpus callosum and adult hippocampus, and with enhanced amygdala response to emotional faces and diminished striatal response to anticipated rewards. Evidence is emerging that these regions and interconnecting pathways have sensitive exposure periods when they are most vulnerable. CONCLUSIONS Early deprivation and later abuse may have opposite effects on amygdala volume. Structural and functional abnormalities initially attributed to psychiatric illness may be a more direct consequence of abuse. Childhood maltreatment exerts a prepotent influence on brain development and has been an unrecognized confound in almost all psychiatric neuroimaging studies. These brain changes may be best understood as adaptive responses to facilitate survival and reproduction in the face of adversity. Their relationship to psychopathology is complex as they are discernible in both susceptible and resilient individuals with maltreatment histories. Mechanisms fostering resilience will need to be a primary focus of future studies.
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Affiliation(s)
- Martin H. Teicher
- Department of Psychiatry, Harvard Medical School, Boston, MA,Developmental Biopsychiatry Research Program, McLean Hospital, Belmont, MA, USA
| | - Jacqueline A. Samson
- Department of Psychiatry, Harvard Medical School, Boston, MA,Developmental Biopsychiatry Research Program, McLean Hospital, Belmont, MA, USA
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14
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Mincic AM. Neuroanatomical correlates of negative emotionality-related traits: A systematic review and meta-analysis. Neuropsychologia 2015; 77:97-118. [DOI: 10.1016/j.neuropsychologia.2015.08.007] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Revised: 07/15/2015] [Accepted: 08/06/2015] [Indexed: 01/07/2023]
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15
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Lener MS, Wong E, Tang CY, Byne W, Goldstein KE, Blair NJ, Haznedar MM, New AS, Chemerinski E, Chu KW, Rimsky LS, Siever LJ, Koenigsberg HW, Hazlett EA. White matter abnormalities in schizophrenia and schizotypal personality disorder. Schizophr Bull 2015; 41:300-10. [PMID: 24962608 PMCID: PMC4266294 DOI: 10.1093/schbul/sbu093] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Prior diffusion tensor imaging (DTI) studies examining schizotypal personality disorder (SPD) and schizophrenia, separately have shown that compared with healthy controls (HCs), patients show frontotemporal white matter (WM) abnormalities. This is the first DTI study to directly compare WM tract coherence with tractography and fractional anisotropy (FA) across the schizophrenia spectrum in a large sample of demographically matched HCs (n = 55), medication-naive SPD patients (n = 49), and unmedicated/never-medicated schizophrenia patients (n = 22) to determine whether (a) frontal-striatal-temporal WM tract abnormalities in schizophrenia are similar to, or distinct from those observed in SPD; and (b) WM tract abnormalities are associated with clinical symptom severity indicating a common underlying pathology across the spectrum. Compared with both the HC and SPD groups, schizophrenia patients showed WM abnormalities, as indexed by lower FA in the temporal lobe (inferior longitudinal fasciculus) and cingulum regions. SPD patients showed lower FA in the corpus callosum genu compared with the HC group, but this regional abnormality was more widespread in schizophrenia patients. Across the schizophrenia spectrum, greater WM disruptions were associated with greater symptom severity. Overall, frontal-striatal-temporal WM dysconnectivity is attenuated in SPD compared with schizophrenia patients and may mitigate the emergence of psychosis.
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Affiliation(s)
- Marc S. Lener
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Edmund Wong
- Translational and Molecular Imaging Institute, Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Cheuk Y. Tang
- Translational and Molecular Imaging Institute, Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY
| | - William Byne
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY;,Mental Illness Research, Education, and Clinical Center (MIRECC VISN 3), James J. Peters Veterans Affairs Medical Center, Bronx, NY;,Department of Outpatient Psychiatry, James J. Peters Veterans Affairs Medical Center, Bronx, NY
| | - Kim E. Goldstein
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Nicholas J. Blair
- Mental Illness Research, Education, and Clinical Center (MIRECC VISN 3), James J. Peters Veterans Affairs Medical Center, Bronx, NY;,Research and Development, James J. Peters Veterans Affairs Medical Center, Bronx, NY
| | - M. Mehmet Haznedar
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY;,Department of Outpatient Psychiatry, James J. Peters Veterans Affairs Medical Center, Bronx, NY
| | - Antonia S. New
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY;,Mental Illness Research, Education, and Clinical Center (MIRECC VISN 3), James J. Peters Veterans Affairs Medical Center, Bronx, NY
| | - Eran Chemerinski
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY;,Department of Outpatient Psychiatry, James J. Peters Veterans Affairs Medical Center, Bronx, NY
| | - King-Wai Chu
- Mental Illness Research, Education, and Clinical Center (MIRECC VISN 3), James J. Peters Veterans Affairs Medical Center, Bronx, NY;,Research and Development, James J. Peters Veterans Affairs Medical Center, Bronx, NY
| | - Liza S. Rimsky
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Larry J. Siever
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY;,Mental Illness Research, Education, and Clinical Center (MIRECC VISN 3), James J. Peters Veterans Affairs Medical Center, Bronx, NY;,Department of Outpatient Psychiatry, James J. Peters Veterans Affairs Medical Center, Bronx, NY
| | - Harold W. Koenigsberg
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY;,Department of Outpatient Psychiatry, James J. Peters Veterans Affairs Medical Center, Bronx, NY
| | - Erin A. Hazlett
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY;,Mental Illness Research, Education, and Clinical Center (MIRECC VISN 3), James J. Peters Veterans Affairs Medical Center, Bronx, NY;,Research and Development, James J. Peters Veterans Affairs Medical Center, Bronx, NY,*To whom correspondence should be addressed; Mental Illness Research, Education, and Clinical Center, James J. Peters VA Medical Center, 130 West Kingsbridge Road, Room 6A-44, Bronx, NY, US; tel: 718-584-9000 x3701, fax: 718-364-3576, e-mail:
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16
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Abstract
The study of schizotypal personality disorder (SPD) is important clinically, as it is understudied, challenging to treat, often under-recognized or misdiagnosed, and associated with significant functional impairment. SPD also represents an intermediate schizophrenia-spectrum phenotype, and therefore, can provide a better understanding of the genetics, pathogenesis, and treatment of related psychotic illnesses. In this review we discuss recent findings of SPD related to epidemiology and functional impairment, heritability and genetics, working memory and cognitive impairments, social-affective disturbances, and neurobiology. Additionally, we examine the challenges associated with treating patients with SPD, as well as clinical recommendations. Finally, we address future directions and areas in need of further exploration.
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Affiliation(s)
- Daniel R. Rosell
- Icahn School of Medicine at Mount Sinai, New York, NY,James J. Peters Veterans Affairs Medical Center, Bronx, NY
| | - Shira E. Futterman
- Icahn School of Medicine at Mount Sinai, New York, NY,James J. Peters Veterans Affairs Medical Center, Bronx, NY
| | - Antonia McMaster
- Icahn School of Medicine at Mount Sinai, New York, NY,James J. Peters Veterans Affairs Medical Center, Bronx, NY
| | - Larry J. Siever
- Icahn School of Medicine at Mount Sinai, New York, NY,James J. Peters Veterans Affairs Medical Center, Bronx, NY
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17
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Smallman RP, Barkus E, Azadbakht H, Embleton KV, Haroon HA, Lewis SW, Morris DM, Parker GJ, Rushe TM. MRI diffusion tractography study in individuals with schizotypal features: a pilot study. Psychiatry Res 2014; 221:49-57. [PMID: 24239094 DOI: 10.1016/j.pscychresns.2013.10.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Revised: 09/30/2013] [Accepted: 10/25/2013] [Indexed: 10/26/2022]
Abstract
Diffusion tensor imaging (DTI) studies have identified changes in white matter tracts in schizophrenia patients and those at high risk of transition. Schizotypal samples represent a group on the schizophrenia continuum that share some aetiological risk factors but without the confounds of illness. The aim of the current study was to compare tract microstructural coherence as measured by fractional anisotropy (FA) between 12 psychometrically defined schizotypes and controls. We investigated bilaterally the uncinate and arcuate fasciculi (UF and AF) via a probabilistic tractography algorithm (PICo), with FA values compared between groups. Partial correlations were also examined between measures of subclinical hallucinatory/delusional experiences and FA values. Participants with schizotypal features were found to have increased FA values in the left hemisphere UF only. In the whole sample there was a positive correlation between FA values and measures of hallucinatory experience in the right AF. These findings suggest subtle changes in microstructural coherence are found in individuals with schizotypal features, but are not similar to changes predominantly observed in clinical samples. Correlations between mild hallucinatory experience and FA values could indicate increasing tract coherence could be associated with symptom formation.
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Affiliation(s)
- Richard P Smallman
- Neuroscience and Psychiatry Unit, University of Manchester, Manchester M13 9PT, UK; School of Psychological Sciences, University of Manchester, Manchester, UK.
| | - Emma Barkus
- School of Psychology, University of Wollongong, Wollongong, NSW, Australia
| | | | - Karl V Embleton
- School of Psychological Sciences, University of Manchester, Manchester, UK; Centre for Imaging Sciences, University of Manchester, Manchester, UK
| | - Hamied A Haroon
- Centre for Imaging Sciences, University of Manchester, Manchester, UK
| | - Shôn W Lewis
- Institute of Brain, Behaviour and Mental Health, University of Manchester, Manchester, UK
| | - David M Morris
- Centre for Imaging Sciences, University of Manchester, Manchester, UK
| | - Geoffrey J Parker
- Centre for Imaging Sciences, University of Manchester, Manchester, UK
| | - Teresa M Rushe
- School of Psychology, Queen's University Belfast, Belfast, UK
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18
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Francis AN, Seidman LJ, Jabbar GA, Mesholam-Gately R, Thermenos HW, Juelich R, Proal AC, Shenton M, Kubicki M, Mathew I, Keshavan M, DeLisi LE. Alterations in brain structures underlying language function in young adults at high familial risk for schizophrenia. Schizophr Res 2012; 141:65-71. [PMID: 22892286 PMCID: PMC3466598 DOI: 10.1016/j.schres.2012.07.015] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2012] [Revised: 07/19/2012] [Accepted: 07/20/2012] [Indexed: 10/28/2022]
Abstract
INTRODUCTION Neuroanatomical and cognitive alterations typical of schizophrenia (SZ) patients are observed to a lesser extent in their adolescent and adult first-degree relatives, likely reflecting neurodevelopmental abnormalities associated with genetic risk for the illness. The anatomical pathways for language are hypothesized to be abnormal and to underlie the positive symptoms of schizophrenia. Examining non-psychotic relatives at high familial risk (FHR) for schizophrenia may clarify if these deficits represent trait markers associated with genetic vulnerability, rather than specific markers resulting from the pathological process underlying schizophrenia. METHODS T1 MRI scans from a 3T Siemens scanner of young adult FHR subjects (N=46) and controls with no family history of illness (i.e. at low genetic risk LRC; N=31) were processed using FreeSurfer 5.0. We explored volumetric and lateralization alterations in regions associated with language processing. An extensive neuropsychological battery of language measures was administered. RESULTS No significant differences were observed between groups on any language measures. Controlling intracranial volume, significantly smaller left pars triangularis (PT) (p<0.01) and right pars orbitalis (PO) (p<0.01) volumes and reversal of the L>R pars orbitalis (p<0.001) lateralization were observed in FHR subjects. In addition, the L pars triangularis and R pars orbitalis correlated with performance on tests of linguistic function in the FHR group. CONCLUSIONS Reduced volume and reversed structural asymmetry in language-related regions hypothesized to be altered in SZ are also found in first degree relatives at FHR, despite normal language performance. To clarify if these findings are endophenotypes for Sz, future studies would need to be performed of ill and well family members no longer within the age range of risk for illness to show these deficits segregate with schizophrenia within families. Moreover, measures of complex language need to be studied to determine if FHR individuals manifest impairments in some aspects of language function.
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Affiliation(s)
- Alan N. Francis
- Beth Israel Deaconess Medical Center; Harvard Medical School, Boston, MA
| | - Larry J. Seidman
- Beth Israel Deaconess Medical Center; Harvard Medical School, Boston, MA,Massachusetts General Hospital; Harvard Medical School, Boston, MA
| | - Gul A. Jabbar
- Veterans Affairs, Boston Healthcare System, Brockton, MA; Harvard Medical School, Boston, MA
| | | | - Heidi W. Thermenos
- Beth Israel Deaconess Medical Center; Harvard Medical School, Boston, MA,Massachusetts General Hospital; Harvard Medical School, Boston, MA
| | - Richard Juelich
- Massachusetts General Hospital; Harvard Medical School, Boston, MA
| | - Ashley C. Proal
- Veterans Affairs, Boston Healthcare System, Brockton, MA; Harvard Medical School, Boston, MA
| | - Martha Shenton
- Brigham and Women’s Hospital; Harvard Medical School, Boston, MA,Veterans Affairs, Boston Healthcare System, Brockton, MA; Harvard Medical School, Boston, MA
| | - Marek Kubicki
- Brigham and Women’s Hospital; Harvard Medical School, Boston, MA,Veterans Affairs, Boston Healthcare System, Brockton, MA; Harvard Medical School, Boston, MA
| | - Ian Mathew
- Beth Israel Deaconess Medical Center; Harvard Medical School, Boston, MA
| | - Matcheri Keshavan
- Beth Israel Deaconess Medical Center; Harvard Medical School, Boston, MA
| | - Lynn E. DeLisi
- Veterans Affairs, Boston Healthcare System, Brockton, MA; Harvard Medical School, Boston, MA,Address all correspondence to: LE DeLisi, MD, Building 2 (2-2-B), The VA Boston Healthcare System, 940 Belmont Avenue, Brockton, Massachusetts.
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19
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Mandl RCW, Rais M, van Baal GCM, van Haren NEM, Cahn W, Kahn RS, Hulshoff Pol HE. Altered white matter connectivity in never-medicated patients with schizophrenia. Hum Brain Mapp 2012; 34:2353-65. [PMID: 22461372 DOI: 10.1002/hbm.22075] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2011] [Revised: 01/22/2012] [Accepted: 02/13/2012] [Indexed: 12/13/2022] Open
Abstract
Numerous diffusion tensor imaging (DTI) studies have implicated white matter brain tissue abnormalities in schizophrenia. However, the vast majority of these studies included patient populations that use antipsychotic medication. Previous research showed that medication intake can affect brain morphology and the question therefore arises to what extent the reported white matter aberrations can be attributed to the disease rather than to the use of medication. In this study we included 16 medication-naïve patients with schizophrenia and compared them to 23 healthy controls to exclude antipsychotic medication use as a confounding factor. For each subject DTI scans and magnetization transfer imaging (MTI) scans were acquired. A new tract-based analysis was used that combines fractional anisoptropy (FA), mean diffusivity (MD) and magnetization transfer ratio (MTR) to examine group differences in 12 major white matter fiber bundles. Significant group differences in combined FA, MD, MTR values were found for the right uncinate fasciculus and the left arcuate fasciculus. Additional analysis revealed that the largest part of both tracts showed an increase in MTR in combination with an increase in MD for patients with schizophrenia. We interpret these group-related differences as disease-related axonal or glial aberrations that cannot be attributed to antipsychotic medication use.
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Affiliation(s)
- René C W Mandl
- Rudolf Magnus Institute of Neuroscience, Department of Psychiatry, University Medical Center Utrecht, Heidelberglaan 100, Utrecht, The Netherlands.
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20
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Abstract
Individuals with schizotypal personality disorder (SPD) share genetic, phenomenologic, and cognitive abnormalities with people diagnosed with schizophrenia. To date, 15 structural MRI studies of the brain have examined size, and 3 diffusion tensor imaging studies have examined white matter connectivity in SPD. Overall, both types of structural neuroimaging modalities have shown temporal lobe abnormalities similar to those observed in schizophrenia, while frontal lobe regions appear to show more sparing. This intriguing pattern suggests that frontal lobe sparing may suppress psychosis, which is consistent with the idea of a possible neuroprotective factor. In this paper, we review these 18 studies and discuss whether individuals with SPD who both resemble and differ from schizophrenia patients in their phenomenology, share some or all of the structural brain imaging characteristics of schizophrenia. We attempt to group the MRI abnormalities in SPD into three patterns: 1) a spectrum of severity-abnormalities are similar to those observed in schizophrenia but not so severe; 2) a spectrum of region-abnormalities affecting some, but not all, brain regions affected in schizophrenia; and 3) a spectrum of compensation-abnormalities reflecting greater-than-normal white matter volume, possibly serving as a buffer or compensatory mechanism protecting the individual with SPD from the frank psychosis observed in schizophrenia.
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21
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Phan KL, Orlichenko A, Boyd E, Angstadt M, Coccaro EF, Liberzon I, Arfanakis K. Preliminary evidence of white matter abnormality in the uncinate fasciculus in generalized social anxiety disorder. Biol Psychiatry 2009; 66:691-4. [PMID: 19362707 PMCID: PMC2743779 DOI: 10.1016/j.biopsych.2009.02.028] [Citation(s) in RCA: 168] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2008] [Revised: 02/05/2009] [Accepted: 02/24/2009] [Indexed: 11/24/2022]
Abstract
BACKGROUND Individuals with generalized social anxiety disorder (GSAD) exhibit exaggerated amygdala reactivity to aversive social stimuli. These findings could be explained by microstructural abnormalities in white matter (WM) tracts that connect the amygdala and prefrontal cortex, which is known to modulate the amygdala's response to threat. The goal of this study was to investigate brain frontal WM abnormalities using diffusion tensor imaging (DTI) in patients with social anxiety disorder. METHODS A Turboprop DTI sequence was used to acquire diffusion tensor images in 30 patients with GSAD and 30 matched healthy control subjects. Fractional anisotropy, an index of axonal organization, within WM was quantified in individual subjects, and an automated voxel-based, whole-brain method was used to analyze group differences. RESULTS Compared with healthy control subjects, patients had significantly lower fractional anisotropy localized to the right uncinate fasciculus WM near the orbitofrontal cortex. There were no areas of higher fractional anisotropy in patients than controls. CONCLUSIONS These findings point to an abnormality in the uncinate fasciculus, the major WM tract connecting the frontal cortex to the amygdala and other limbic temporal regions, in GSAD, which could underlie the aberrant amygdala-prefrontal interactions resulting in dysfunctional social threat processing in this illness.
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22
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Abstract
OBJECTIVES Since the development of diffusion tensor imaging (DTI) nearly a decade ago, it has been extensively applied to a number of different psychiatric disorders. Its rapid assimilation into psychiatric research has stemmed from its unique property to measure the coherence and direction of neuronal fiber tracts. The goal of this article is to provide an overview of DTI and its application to psychiatric disorders. METHODS We performed an extensive literature review of articles using DTI to study psychiatric disorders. To date, most DTI studies have been performed on individuals with schizophrenia. However, recent studies have emerged that evaluate white matter (WM) integrity in major depressive disorder, anxiety disorders, obsessive-compulsive disorder, attention deficit disorder, autism, and personality disorders. RESULTS There is tremendous heterogeneity in the results of DTI studies of patients with psychiatric disorders. In schizophrenia, which currently has more than 50 studies using DTI, brain regions such as the cingulate bundle, corpus callosum, and regions within the frontal and temporal WM have a proportionally larger number of positive findings across the studies. Studies of other psychiatric disorders have findings that overlap with those seen in schizophrenia. CONCLUSIONS There is converging evidence that a number of psychiatric disorders are associated with WM abnormalities. However, the considerable heterogeneity of results, both within and between existing studies, will require future work within and across psychiatric disorders to better delineate the neurobiological underpinnings of these white matter abnormalities.
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23
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Abstract
This article reviews empirical studies of affective traits in individuals with schizophrenia spectrum disorders, population-based investigations of vulnerability to psychosis, and genetic and psychometric high-risk samples. The review focuses on studies that use self-report trait questionnaires to assess Negative Affectivity (NA) and Positive Affectivity (PA), which are conceptualized in contemporary models of personality as broad, temperamentally-based dispositions to experience corresponding emotional states. Individuals with schizophrenia report a pattern of stably elevated NA and low PA throughout the illness course. Among affected individuals, these traits are associated with variability in several clinically important features, including functional outcome, quality of life, and stress reactivity. Furthermore, evidence that elevated NA and low PA (particularly the facet of anhedonia) predict the development of psychosis and are detectable in high-risk samples suggests that these traits play a role in vulnerability to schizophrenia, though they are implicated in other forms of psychopathology as well. Results are discussed in terms of their implications for treatment, etiological models, and future research to advance the study of affective traits in schizophrenia and schizotypy.
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Affiliation(s)
- William P. Horan
- Department of Psychiatry & Biobehavioral Sciences, University of California, Los Angeles, CA 90095,To whom correspondence should be addressed; 300 UCLA Medical Plaza, Suite 2240, Los Angeles, CA 90095-6968, USA; tel: 310-206-8181, fax: 310-206-3651, e-mail:
| | - Jack J. Blanchard
- Department of Psychology, University of Maryland at College Park, College Park, MD 20742
| | - Lee Anna Clark
- Department of Psychology, University of Iowa, Iowa City, IA 52242
| | - Michael F. Green
- Department of Psychiatry & Biobehavioral Sciences, University of California, Los Angeles, CA 90095,VA Greater Los Angeles Healthcare System, Los Angeles, CA 90073
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