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Esposito CM, Barkin JL, Ceresa A, Nosari G, Di Paolo M, Legnani F, Cirella L, Surace T, Tagliabue I, Capuzzi E, Caldiroli A, Dakanalis A, Politi P, Clerici M, Buoli M. Are There Any Differences in Clinical and Biochemical Variables between Bipolar Patients with or without Lifetime Psychotic Symptoms? J Clin Med 2023; 12:5902. [PMID: 37762843 PMCID: PMC10531939 DOI: 10.3390/jcm12185902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 08/29/2023] [Accepted: 09/08/2023] [Indexed: 09/29/2023] Open
Abstract
INTRODUCTION Psychotic symptoms occur in more than half of patients affected by Bipolar Disorder (BD) and are associated with an unfavorable course of the disorder. The objective of this study is to identify the differences in the clinical and biochemical parameters between bipolar patients with or without psychotic symptoms. METHODS A total of 665 inpatients were recruited. Demographic, clinical, and biochemical data related to the first day of hospitalization were obtained via a screening of the clinical charts and intranet hospital applications. The two groups identified via the lifetime presence of psychotic symptoms were compared using t tests for quantitative variables and χ2 tests for qualitative ones; binary logistic regression models were subsequently performed. RESULTS Patients with psychotic BD (compared to non-psychotic ones) showed a longer duration of hospitalization (p < 0.001), higher Young Mania Rating Scale scores (p < 0.001), lower Global Assessment of Functioning scores (p = 0.002), a less frequent history of lifetime suicide attempts (p = 0.019), less achievement of remission during the current hospitalization (p = 0.028), and a higher Neutrophile to Lymphocyte Ratio (NLR) (p = 0.006), but lower total cholesterol (p = 0.018) and triglycerides (p = 0.013). CONCLUSIONS Patients with psychotic BD have a different clinical and biochemical profile compared to their counterparts, characterized by more clinical severity, fewer metabolic alterations, and a higher grade of inflammation. Further multi-center studies have to confirm the results of this present study.
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Affiliation(s)
- Cecilia Maria Esposito
- Department of Neurosciences and Mental Health, Fondazione IRCCS Ca’ Granda, Ospedale Maggiore Policlinico, 20122 Milan, Italy; (A.C.); (G.N.); (M.D.P.); (F.L.)
- Department of Brain and Behavioral Sciences, University of Pavia, 27100 Pavia, Italy;
| | - Jennifer L. Barkin
- Department of Community Medicine, School of Medicine, Mercer University, Macon, GA 31207, USA;
| | - Alessandro Ceresa
- Department of Neurosciences and Mental Health, Fondazione IRCCS Ca’ Granda, Ospedale Maggiore Policlinico, 20122 Milan, Italy; (A.C.); (G.N.); (M.D.P.); (F.L.)
| | - Guido Nosari
- Department of Neurosciences and Mental Health, Fondazione IRCCS Ca’ Granda, Ospedale Maggiore Policlinico, 20122 Milan, Italy; (A.C.); (G.N.); (M.D.P.); (F.L.)
| | - Martina Di Paolo
- Department of Neurosciences and Mental Health, Fondazione IRCCS Ca’ Granda, Ospedale Maggiore Policlinico, 20122 Milan, Italy; (A.C.); (G.N.); (M.D.P.); (F.L.)
| | - Francesca Legnani
- Department of Neurosciences and Mental Health, Fondazione IRCCS Ca’ Granda, Ospedale Maggiore Policlinico, 20122 Milan, Italy; (A.C.); (G.N.); (M.D.P.); (F.L.)
| | - Luisa Cirella
- Healthcare Professionals Department, Foundation IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy;
| | - Teresa Surace
- Psychiatric Department, Azienda Socio Sanitaria Territoriale Monza, 20900 Monza, Italy; (T.S.); (I.T.); (E.C.); (A.C.); (M.C.)
| | - Ilaria Tagliabue
- Psychiatric Department, Azienda Socio Sanitaria Territoriale Monza, 20900 Monza, Italy; (T.S.); (I.T.); (E.C.); (A.C.); (M.C.)
| | - Enrico Capuzzi
- Psychiatric Department, Azienda Socio Sanitaria Territoriale Monza, 20900 Monza, Italy; (T.S.); (I.T.); (E.C.); (A.C.); (M.C.)
| | - Alice Caldiroli
- Psychiatric Department, Azienda Socio Sanitaria Territoriale Monza, 20900 Monza, Italy; (T.S.); (I.T.); (E.C.); (A.C.); (M.C.)
| | - Antonios Dakanalis
- Department of Medicine and Surgery, University of Milano Bicocca, 20126 Monza, Italy;
| | - Pierluigi Politi
- Department of Brain and Behavioral Sciences, University of Pavia, 27100 Pavia, Italy;
| | - Massimo Clerici
- Psychiatric Department, Azienda Socio Sanitaria Territoriale Monza, 20900 Monza, Italy; (T.S.); (I.T.); (E.C.); (A.C.); (M.C.)
- Department of Medicine and Surgery, University of Milano Bicocca, 20126 Monza, Italy;
| | - Massimiliano Buoli
- Department of Neurosciences and Mental Health, Fondazione IRCCS Ca’ Granda, Ospedale Maggiore Policlinico, 20122 Milan, Italy; (A.C.); (G.N.); (M.D.P.); (F.L.)
- Department of Pathophysiology and Transplantation, University of Milan, 20122 Milan, Italy
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Wang D, Guo T, Guo Q, Zhang S, Zhang J, Luo J. The Association Between Schizophrenia Risk Variants and Creativity in Healthy Han Chinese Subjects. Front Psychol 2019; 10:2218. [PMID: 31649580 PMCID: PMC6792478 DOI: 10.3389/fpsyg.2019.02218] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 09/17/2019] [Indexed: 11/14/2022] Open
Abstract
Although previous evidence has suggested that there is a genetic link between schizophrenia and creativity, the specific genetic variants that underlie the link are still largely unknown. To further explore the potential genetic link between schizophrenia and creativity, in a sample of 580 healthy Han Chinese subjects, this study aimed to (1) validate the role of Neuregulin 1 (NRG1) rs6994992 (one schizophrenia risk variant that has been previously linked to creativity in the European population) in the relationship between schizophrenia and creativity and (2) explore the associations between 10 other schizophrenia risk variants and creativity. For NRG1 rs6994992, the result validated its association with creativity measures. However, since NRG1 rs6994992 is not a schizophrenia risk variant in the Han Chinese population, the validated association suggested that ethnic difference may exist in the relationship between NRG1 rs6994992, schizophrenia and creativity. For other schizophrenia risk variants, the result only demonstrated a nominal association between ZNF536 rs2053079 and creativity measures which would not survive correction for multiple testing. No association between polygenic risk score for these 10 schizophrenia risk variants and creativity measures was observed. In conclusion, this study provides limited evidence for the associations between these schizophrenia risk variants and creativity in healthy Han Chinese subjects. Future studies are warranted to better understand the potential genetic link between schizophrenia and creativity.
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Affiliation(s)
- Dan Wang
- Beijing Key Laboratory of Learning and Cognition, Department of Psychology, The Collaborative Innovation Center for Capital Education Development, Capital Normal University, Beijing, China
| | - Tingting Guo
- Beijing Gese Technology Co., Ltd., Beijing, China
| | - Qi Guo
- Beijing Key Laboratory of Learning and Cognition, Department of Psychology, The Collaborative Innovation Center for Capital Education Development, Capital Normal University, Beijing, China
| | - Shun Zhang
- Department of Psychology, Shandong Normal University, Jinan, China
| | - Jinghuan Zhang
- Department of Psychology, Shandong Normal University, Jinan, China
| | - Jing Luo
- Beijing Key Laboratory of Learning and Cognition, Department of Psychology, The Collaborative Innovation Center for Capital Education Development, Capital Normal University, Beijing, China
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Borovok N, Nesher E, Reichenstein M, Tikhonova T, Levin Y, Pinhasov A, Michaelevski I. Effect of social interactions on hippocampal protein expression in animal dominant and submissive model of behavioral disorders. Proteomics Clin Appl 2017; 11. [DOI: 10.1002/prca.201700089] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 06/07/2017] [Accepted: 06/26/2017] [Indexed: 02/02/2023]
Affiliation(s)
- Natalia Borovok
- Department of Biochemistry and Molecular Biology; Tel Aviv University; Tel-Aviv Israel
| | | | - Michal Reichenstein
- Department of Biochemistry and Molecular Biology; Tel Aviv University; Tel-Aviv Israel
| | | | - Yishai Levin
- de Botton Institute for Protein Profiling; The Nancy & Stephen Grand Israel National Center for Personalized Medicine; Weizmann Institute of Science; Rehovot Israel
| | - Albert Pinhasov
- Department of Molecular Biology; Ariel University; Ariel Israel
| | - Izhak Michaelevski
- Department of Molecular Biology; Ariel University; Ariel Israel
- Department of Biochemistry and Molecular Biology; Tel Aviv University; Tel-Aviv Israel
- Sagol School of Neuroscience; Tel Aviv University; Tel Aviv Israel
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4
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Variation at NRG1 genotype related to modulation of small-world properties of the functional cortical network. Eur Arch Psychiatry Clin Neurosci 2017; 267:25-32. [PMID: 26650688 DOI: 10.1007/s00406-015-0659-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2015] [Accepted: 11/17/2015] [Indexed: 01/11/2023]
Abstract
Functional brain networks possess significant small-world (SW) properties. Genetic variation relevant to both inhibitory and excitatory transmission may contribute to modulate these properties. In healthy controls, genotypic variation in Neuregulin 1 (NRG1) related to the risk of psychosis (risk alleles) would contribute to functional SW modulation of the cortical network. Electroencephalographic activity during an odd-ball task was recorded in 144 healthy controls. Then, small-worldness (SWn) was calculated in five frequency bands (i.e., theta, alpha, beta1, beta2 and gamma) for baseline (from -300 to the stimulus onset) and response (150-450 ms post-target stimulus) windows. The SWn modulation was defined as the difference in SWn between both windows. Association between SWn modulation and carrying the risk allele for three single nucleotide polymorphisms (SNP) of NRG1 (i.e., rs6468119, rs6994992 and rs7005606) was assessed. A significant association between three SNPs of NRG1 and the SWn modulation was found, specifically: NRG1 rs6468119 in alpha and beta1 bands; NRG1 rs6994992 in theta band; and NRG1 rs7005606 in theta and beta1 bands. Genetic variation at NRG1 may influence functional brain connectivity through the modulation of SWn properties of the cortical network.
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Monson ET, Pirooznia M, Parla J, Kramer M, Goes FS, Gaine ME, Gaynor SC, de Klerk K, Jancic D, Karchin R, McCombie WR, Zandi PP, Potash JB, Willour VL. Assessment of Whole-Exome Sequence Data in Attempted Suicide within a Bipolar Disorder Cohort. MOLECULAR NEUROPSYCHIATRY 2017; 3:1-11. [PMID: 28879196 DOI: 10.1159/000454773] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Accepted: 11/24/2016] [Indexed: 11/19/2022]
Abstract
Suicidal behavior is a complex and devastating phenotype with a heritable component that has not been fully explained by existing common genetic variant analyses. This study represents the first large-scale DNA sequencing project designed to assess the role of rare functional genetic variation in suicidal behavior risk. To accomplish this, whole-exome sequencing data for ∼19,000 genes were generated for 387 bipolar disorder subjects with a history of suicide attempt and 631 bipolar disorder subjects with no prior suicide attempts. Rare functional variants were assessed in all exome genes as well as pathways hypothesized to contribute to suicidal behavior risk. No result survived conservative Bonferroni correction, though many suggestive findings have arisen that merit additional attention. In addition, nominal support for past associations in genes, such as BDNF, and pathways, such as the hypothalamic-pituitary-adrenal axis, was also observed. Finally, a novel pathway was identified that is driven by aldehyde dehydrogenase genes. Ultimately, this investigation explores variation left largely untouched by existing efforts in suicidal behavior, providing a wealth of novel information to add to future investigations, such as meta-analyses.
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Affiliation(s)
- Eric T Monson
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Mehdi Pirooznia
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, Maryland, USA
| | - Jennifer Parla
- Stanley Institute for Cognitive Genomics, Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, USA
| | - Melissa Kramer
- Stanley Institute for Cognitive Genomics, Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, USA
| | - Fernando S Goes
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, Maryland, USA
| | - Marie E Gaine
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Sophia C Gaynor
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Kelly de Klerk
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Dubravka Jancic
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Rachel Karchin
- Department of Biomedical Engineering, Institute for Computational Medicine, Johns Hopkins University, Maryland, USA
| | - W Richard McCombie
- Stanley Institute for Cognitive Genomics, Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, USA
| | - Peter P Zandi
- Department of Mental Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - James B Potash
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Virginia L Willour
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
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Buoli M, Caldiroli A, Cumerlato Melter C, Serati M, de Nijs J, Altamura AC. Biological aspects and candidate biomarkers for psychotic bipolar disorder: A systematic review. Psychiatry Clin Neurosci 2016; 70:227-44. [PMID: 26969211 DOI: 10.1111/pcn.12386] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 01/24/2016] [Accepted: 03/06/2016] [Indexed: 12/23/2022]
Abstract
AIM We carried out a systematic review of the available literature about potential biomarkers of psychotic bipolar disorder (BD-P), a specific subset presenting worse outcome and greater risk of relapse than non-psychotic bipolar disorder (BD-NP). METHODS We searched the main psychiatric databases (PubMed, ISI Web of Knowledge, PsychInfo). Only original articles with the main topic of BD-P compared to schizophrenia/BD-NP/healthy controls (HC) written in English from 1994 to 2015 were included. RESULTS BD-P patients presented higher kynurenic acid levels in the cerebrospinal fluid, elevated anti- S accharomyces cerevisiae antibodies levels, and lower serum levels of dehydroepiandrosterone sulfate and progesterone than BD-NP/HC. Event-related potentials abnormalities have been identified in BD-P with respect to BD-NP. BD-P patients also presented bigger ventricles but similar hippocampal volumes compared to BD-NP/HC. Although the results are contrasting, some cognitive deficits seemed to be related to the psychotic dimension of bipolar affective disorder, such as impairment in verbal/logical memory, working memory, verbal and semantic fluency and executive functioning. Finally, polymorphisms of genes, such as NRG1, 5HTTLPR (s), COMT, DAOA and some chromosome regions (16p12 and 13q), were positively associated with BD-P. CONCLUSION Data about the identification of specific biomarkers for BD-P are promising, but most of them have not yet been replicated. They could lead the clinicians to an early diagnosis and proper treatment, thus ameliorating outcome of BD-P and reducing the biological changes associated with a long duration of illness. Further studies with bigger samples are needed to detect more specific biological markers of the psychotic dimension of bipolar affective disorder.
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Affiliation(s)
- Massimiliano Buoli
- Department of Psychiatry, University of Milan, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy.,Department of Psychiatry, University Medical Center Utrecht - Brain Centre Rudolf Magnus, Utrecht, The Netherlands
| | - Alice Caldiroli
- Department of Psychiatry, University of Milan, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - Claudia Cumerlato Melter
- Department of Psychiatry, University of Milan, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - Marta Serati
- Department of Psychiatry, University of Milan, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - Jessica de Nijs
- Department of Psychiatry, University Medical Center Utrecht - Brain Centre Rudolf Magnus, Utrecht, The Netherlands
| | - A Carlo Altamura
- Department of Psychiatry, University of Milan, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy
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7
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Barrenschee M, Lange C, Cossais F, Egberts JH, Becker T, Wedel T, Böttner M. Expression and function of Neuregulin 1 and its signaling system ERBB2/3 in the enteric nervous system. Front Cell Neurosci 2015; 9:360. [PMID: 26441531 PMCID: PMC4585281 DOI: 10.3389/fncel.2015.00360] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Accepted: 08/28/2015] [Indexed: 12/12/2022] Open
Abstract
Neuregulin 1 (NRG1) is suggested to promote the survival and maintenance of the enteric nervous system (ENS). As deficiency in its corresponding receptor signaling complex ERBB2/ERBB3 leads to postnatal colonic hypo/aganglionosis we assessed the distributional and expressional pattern of the NRG1-ERBB2/ERBB3 system in the human colon and explored the neurotrophic capacity of NRG1 on cultured enteric neurons. Site-specific mRNA expression of the NRG1-ERBB2/3 system was determined in microdissected samples harvested from enteric musculature and ganglia. Localization of NRG1, ERBB2 and ERBB3 was determined by dual-label-immunohistochemistry using pan-neuronal and pan-glial markers. Morphometric analysis was performed on NRG1-stimulated rat enteric nerve cultures to evaluate neurotrophic effects. mRNA expression of the NRG1-ERBB2/3 system was determined by qPCR. Co-localization of NRG1 with neuronal or synaptic markers was analyzed in enteric nerve cultures stimulated with glial cell line-derived neurotrophic factor (GDNF). The NRG1 system was expressed in both neurons and glial cells of enteric ganglia and in nerve fibers. NRG1 significantly enhanced growth parameters in enteric nerve cell cultures and ErB3 mRNA expression was down-regulated upon NRG1 stimulation. GDNF negatively regulates ErbB2 and ErbB3 mRNA expression. The NRG1-ERBB2/3 system is physiologically present in the human ENS and NRG1 acts as a neurotrophic factor for the ENS. The down-regulation of ErbB3/ErbB2 in GDNF stimulated nerve cell cultures points to an interaction of both neurotrophic factors. Thus, the data may provide a basis to assess disturbed signaling components of the NRG1 system in enteric neuropathies.
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Affiliation(s)
- Martina Barrenschee
- Neurogastroenterology, Institute of Anatomy, Christian-Albrechts-University of Kiel Kiel, Germany
| | - Christina Lange
- Neurogastroenterology, Institute of Anatomy, Christian-Albrechts-University of Kiel Kiel, Germany
| | - François Cossais
- Neurogastroenterology, Institute of Anatomy, Christian-Albrechts-University of Kiel Kiel, Germany
| | - Jan-Hendrik Egberts
- Department of General, Thoracic, Transplantation and Pediatric Surgery, University Hospital Schleswig-Holstein, Campus Kiel Kiel, Germany
| | - Thomas Becker
- Department of General, Thoracic, Transplantation and Pediatric Surgery, University Hospital Schleswig-Holstein, Campus Kiel Kiel, Germany
| | - Thilo Wedel
- Neurogastroenterology, Institute of Anatomy, Christian-Albrechts-University of Kiel Kiel, Germany
| | - Martina Böttner
- Neurogastroenterology, Institute of Anatomy, Christian-Albrechts-University of Kiel Kiel, Germany
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Samsom JN, Wong AHC. Schizophrenia and Depression Co-Morbidity: What We have Learned from Animal Models. Front Psychiatry 2015; 6:13. [PMID: 25762938 PMCID: PMC4332163 DOI: 10.3389/fpsyt.2015.00013] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Accepted: 01/24/2015] [Indexed: 12/15/2022] Open
Abstract
Patients with schizophrenia are at an increased risk for the development of depression. Overlap in the symptoms and genetic risk factors between the two disorders suggests a common etiological mechanism may underlie the presentation of comorbid depression in schizophrenia. Understanding these shared mechanisms will be important in informing the development of new treatments. Rodent models are powerful tools for understanding gene function as it relates to behavior. Examining rodent models relevant to both schizophrenia and depression reveals a number of common mechanisms. Current models which demonstrate endophenotypes of both schizophrenia and depression are reviewed here, including models of CUB and SUSHI multiple domains 1, PDZ and LIM domain 5, glutamate Delta 1 receptor, diabetic db/db mice, neuropeptide Y, disrupted in schizophrenia 1, and its interacting partners, reelin, maternal immune activation, and social isolation. Neurotransmission, brain connectivity, the immune system, the environment, and metabolism emerge as potential common mechanisms linking these models and potentially explaining comorbid depression in schizophrenia.
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Affiliation(s)
- James N Samsom
- Department of Molecular Neuroscience, Centre for Addiction and Mental Health, Campbell Family Mental Health Research Institute , Toronto, ON , Canada ; Department of Pharmacology, Faculty of Medicine, University of Toronto , Toronto, ON , Canada
| | - Albert H C Wong
- Department of Molecular Neuroscience, Centre for Addiction and Mental Health, Campbell Family Mental Health Research Institute , Toronto, ON , Canada ; Department of Pharmacology, Faculty of Medicine, University of Toronto , Toronto, ON , Canada ; Department of Psychiatry, Faculty of Medicine, University of Toronto , Toronto, ON , Canada
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Crabtree GW, Gogos JA. Synaptic plasticity, neural circuits, and the emerging role of altered short-term information processing in schizophrenia. Front Synaptic Neurosci 2014; 6:28. [PMID: 25505409 PMCID: PMC4243504 DOI: 10.3389/fnsyn.2014.00028] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Accepted: 10/22/2014] [Indexed: 01/01/2023] Open
Abstract
Synaptic plasticity alters the strength of information flow between presynaptic and postsynaptic neurons and thus modifies the likelihood that action potentials in a presynaptic neuron will lead to an action potential in a postsynaptic neuron. As such, synaptic plasticity and pathological changes in synaptic plasticity impact the synaptic computation which controls the information flow through the neural microcircuits responsible for the complex information processing necessary to drive adaptive behaviors. As current theories of neuropsychiatric disease suggest that distinct dysfunctions in neural circuit performance may critically underlie the unique symptoms of these diseases, pathological alterations in synaptic plasticity mechanisms may be fundamental to the disease process. Here we consider mechanisms of both short-term and long-term plasticity of synaptic transmission and their possible roles in information processing by neural microcircuits in both health and disease. As paradigms of neuropsychiatric diseases with strongly implicated risk genes, we discuss the findings in schizophrenia and autism and consider the alterations in synaptic plasticity and network function observed in both human studies and genetic mouse models of these diseases. Together these studies have begun to point toward a likely dominant role of short-term synaptic plasticity alterations in schizophrenia while dysfunction in autism spectrum disorders (ASDs) may be due to a combination of both short-term and long-term synaptic plasticity alterations.
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Affiliation(s)
- Gregg W. Crabtree
- Department of Physiology and Cellular Biophysics, College of Physicians and Surgeons, Columbia UniversityNew York, NY, USA
| | - Joseph A. Gogos
- Department of Physiology and Cellular Biophysics, College of Physicians and Surgeons, Columbia UniversityNew York, NY, USA
- Department of Neuroscience, College of Physicians and Surgeons, Columbia UniversityNew York, NY, USA
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10
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Gutiérrez-Fernández A, Palomino A, González-Pinto A, Ugarte A, Hernanz M, Mendíbil B, Etxebeste M, Pacheco L, Gónzalez-García G, Matute C. Novel association of Neuregulin 1 gene with bipolar disorder but not with schizophrenia. Schizophr Res 2014; 159:552-3. [PMID: 25244971 DOI: 10.1016/j.schres.2014.09.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Revised: 08/29/2014] [Accepted: 09/01/2014] [Indexed: 12/22/2022]
Affiliation(s)
- Arantza Gutiérrez-Fernández
- Neurotek UPV-EHU, Departamento de Neurociencias, CIBERNED and Achucarro Basque Center for Neuroscience, Parque Tecnológico de Bizkaia, E-48170 Zamudio, Vizcaya, Spain
| | - Aitor Palomino
- Neurotek UPV-EHU, Departamento de Neurociencias, CIBERNED and Achucarro Basque Center for Neuroscience, Parque Tecnológico de Bizkaia, E-48170 Zamudio, Vizcaya, Spain
| | - Ana González-Pinto
- Stanley Research Center, 03-RC-003, Vitoria, Spain; CIBERSAM, Vitoria, Spain
| | - Amaia Ugarte
- Stanley Research Center, 03-RC-003, Vitoria, Spain; CIBERSAM, Vitoria, Spain
| | - Margarita Hernanz
- Stanley Research Center, 03-RC-003, Vitoria, Spain; CIBERSAM, Vitoria, Spain
| | | | | | | | | | - Carlos Matute
- Neurotek UPV-EHU, Departamento de Neurociencias, CIBERNED and Achucarro Basque Center for Neuroscience, Parque Tecnológico de Bizkaia, E-48170 Zamudio, Vizcaya, Spain.
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Mei L, Nave KA. Neuregulin-ERBB signaling in the nervous system and neuropsychiatric diseases. Neuron 2014; 83:27-49. [PMID: 24991953 DOI: 10.1016/j.neuron.2014.06.007] [Citation(s) in RCA: 413] [Impact Index Per Article: 41.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Neuregulins (NRGs) comprise a large family of growth factors that stimulate ERBB receptor tyrosine kinases. NRGs and their receptors, ERBBs, have been identified as susceptibility genes for diseases such as schizophrenia (SZ) and bipolar disorder. Recent studies have revealed complex Nrg/Erbb signaling networks that regulate the assembly of neural circuitry, myelination, neurotransmission, and synaptic plasticity. Evidence indicates there is an optimal level of NRG/ERBB signaling in the brain and deviation from it impairs brain functions. NRGs/ERBBs and downstream signaling pathways may provide therapeutic targets for specific neuropsychiatric symptoms.
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Affiliation(s)
- Lin Mei
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912, USA; Department of Neurology, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912, USA; Charlie Norwood VA Medical Center, Augusta, GA 30904, USA.
| | - Klaus-Armin Nave
- Department of Neurogenetics, Max Planck Institute of Experimental Medicine, 37075 Goettingen, Germany.
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Cao L, Deng W, Guan L, Yang Z, Lin Y, Ma X, Li X, Liu Y, Ye B, Lao G, Chen Y, Liang H, Wu Y, Ou Y, Huang W, Liu W, Wang Q, Wang Y, Zhao L, Li T, Hu X. Association of the 3' region of the neuregulin 1 gene with bipolar I disorder in the Chinese Han population. J Affect Disord 2014; 162:81-8. [PMID: 24767010 DOI: 10.1016/j.jad.2014.03.037] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Revised: 03/17/2014] [Accepted: 03/18/2014] [Indexed: 11/26/2022]
Abstract
BACKGROUND Based on the function of neuregulin 1 (NRG1) in neurodevelopment, susceptibility to bipolar disorder presumably involves this gene. The 3' region of NRG1 contains the majority of the coding exons, and transcripts from this region encode 8 of the 9 known NRG1 isoforms; therefore, this region is likely to be predominant versus the 5' region in terms of their relative contributions to NRG1 function. We investigated the association between the 3' region of the NRG1 gene and bipolar I disorder (BPI) in the Chinese Han population and performed further analyses depending on the presence or absence of psychotic features. METHODS A total of 385 BPI patients and 475 healthy controls were recruited for this study. Thirty tag single nucleotide polymorphisms (SNPs) across the 3' region of the NRG1 gene were genotyped for allelic and haplotypic associations with BPI and subgroups with psychotic features (BPI-P) or without psychotic features (BPI-NP). RESULTS Individual marker analysis showed that 2 SNPs (rs12547858 and rs6468121) in this region were significantly associated with BPI. Moreover, subgroup analyses showed significant but marginal associations of rs6468121 with BPI-P and rs3757933 with BPI-NP. Haplotype analyses showed that 6 haplotypes were associated with BPI only. LIMITATIONS The sample size was relatively small. The investigated tag SNPs only represented 83% of the information on the targeted region. There might be a retrospective bias in the subgroup analyses. CONCLUSION The results suggest that the 3' region of the NRG1 gene plays a role in BPI susceptibility in the Chinese Han population. In addition, the preliminary results show that BPI with psychotic features and BPI without psychotic features may constitute different sub-phenotypes; however, this finding should be confirmed in a larger population sample.
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Affiliation(s)
- Liping Cao
- Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Brain Hospital, Guangzhou, Guangdong, PR China.
| | - Wenhao Deng
- Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Brain Hospital, Guangzhou, Guangdong, PR China
| | - Lijie Guan
- Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Brain Hospital, Guangzhou, Guangdong, PR China
| | - Zhenxing Yang
- Psychiatric Laboratory and Mental Health Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, PR China
| | - Yin Lin
- Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Brain Hospital, Guangzhou, Guangdong, PR China; Psychiatric Laboratory and Mental Health Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, PR China
| | - Xiaohong Ma
- Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Brain Hospital, Guangzhou, Guangdong, PR China; Psychiatric Laboratory and Mental Health Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, PR China
| | - Xuan Li
- Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Brain Hospital, Guangzhou, Guangdong, PR China
| | - Yuping Liu
- Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Brain Hospital, Guangzhou, Guangdong, PR China
| | - Biyu Ye
- Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Brain Hospital, Guangzhou, Guangdong, PR China
| | - Guohui Lao
- Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Brain Hospital, Guangzhou, Guangdong, PR China
| | - Yuwei Chen
- Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Brain Hospital, Guangzhou, Guangdong, PR China
| | - Huiwei Liang
- Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Brain Hospital, Guangzhou, Guangdong, PR China
| | - Yuanfei Wu
- Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Brain Hospital, Guangzhou, Guangdong, PR China
| | - Yufen Ou
- Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Brain Hospital, Guangzhou, Guangdong, PR China
| | - Weijie Huang
- Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Brain Hospital, Guangzhou, Guangdong, PR China
| | - Wentao Liu
- Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Brain Hospital, Guangzhou, Guangdong, PR China
| | - Qiang Wang
- Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Brain Hospital, Guangzhou, Guangdong, PR China; Psychiatric Laboratory and Mental Health Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, PR China
| | - Yingcheng Wang
- Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou Brain Hospital, Guangzhou, Guangdong, PR China; Psychiatric Laboratory and Mental Health Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, PR China
| | - Liansheng Zhao
- Psychiatric Laboratory and Mental Health Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, PR China
| | - Tao Li
- Psychiatric Laboratory and Mental Health Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, PR China
| | - Xun Hu
- Psychiatric Laboratory and Mental Health Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, PR China.
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Marlinge E, Bellivier F, Houenou J. White matter alterations in bipolar disorder: potential for drug discovery and development. Bipolar Disord 2014; 16:97-112. [PMID: 24571279 DOI: 10.1111/bdi.12135] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2012] [Accepted: 05/24/2013] [Indexed: 12/15/2022]
Abstract
OBJECTIVES Brain white matter (WM) alterations have recently emerged as potentially relevant in bipolar disorder. New techniques such as diffusion tensor imaging allow precise exploration of these WM microstructural alterations in bipolar disorder. Our objective was to critically review WM alterations in bipolar disorder, using neuroimaging and neuropathological studies, in the context of neural models and the potential for drug discovery and development. METHODS We conducted a systematic PubMed and Google Scholar search of the WM and bipolar disorder literature up to and including January 2013. RESULTS Findings relating to WM alterations are consistent in neuroimaging and neuropathology studies of bipolar disorder, especially in regions involved in emotional processing such as the anterior frontal lobe, corpus callosum, cingulate cortex, and in fronto-limbic connections. Some of the structural alterations are related to genetic risk factors for bipolar disorder and may underlie the dysfunctional emotional processing described in recent neurobiological models of bipolar disorder. Medication effects in bipolar disorder, from lithium and other mood stabilizers, might impact myelinating processes, particularly by inhibition of glycogen synthase kinase-3 beta. CONCLUSIONS Pathways leading to WM alterations in bipolar disorder represent potential targets for the development and discovery of new drugs. Myelin damage in bipolar disorder suggests that the effects of existing pro-myelinating drugs should also be evaluated to improve our understanding and treatment of this disease.
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Affiliation(s)
- Emeline Marlinge
- AP-HP, Groupe Henri Mondor-Albert Chenevier, Pôle de Psychiatrie, Paris, France; Inserm, U955, Equipe 15 (Psychiatrie Génétique), Paris, France; Fondation Fondamental, Créteil, France; Neurospin, I2BM, CEA, Gif-Sur-Yvette, France
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Gow M, Mirembe D, Longwe Z, Pickard BS. A gene trap mutagenesis screen for genes underlying cellular response to the mood stabilizer lithium. J Cell Mol Med 2013; 17:657-63. [PMID: 23577691 PMCID: PMC3822818 DOI: 10.1111/jcmm.12048] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Accepted: 01/31/2013] [Indexed: 01/16/2023] Open
Abstract
Identifying the biological pathways mediating the action of a therapeutic compound may help the development of more specific treatments while also increasing our understanding of the underlying disease pathology. Salts of the metal lithium are commonly used as a front-line mood stabilizing treatment for bipolar disorder. Lithium's action has been variously linked to inositol phosphate metabolism and the WNT/Glycogen Synthase Kinase 3β (GSK3β)/β-Catenin signalling cascade, but, to date, little is known about which of these provides the principal therapeutic benefit for patients and, more specifically, which constituent genes, through presumed sequence variation, determine differences in patient response to treatment. Here, we describe a functional screen in which SH-SY5Y neuroblastoma cells were randomly mutated through genomic integration of the pMS1 poly A ‘gene trap’ plasmid vector. Lithium normally induces differentiation of neuroblastoma cells, but a small proportion of mutated cells continued to proliferate and formed colonies. Rapid amplification of cDNA ends (RACE)-PCR was used to identify the ‘trapped’ gene in each of these lithium-resistant colonies. Heterozygous, gene trap integrations were identified within ten genes, eight of which are likely to produce loss-of-function mutations including MED10, MSI2 and three long intergenic non-coding (LINC) RNAs. Both MED10 and MSI2 have been previously linked with WNT/GSK3β/β-Catenin pathway function suggesting that this is an important mediator of lithium action in this screen. The methodology applied here provides a rapid, objective and economic approach to define the genetic contribution to drug action, but could also be readily adapted to any desired in vitro functional selection/screening paradigm.
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Affiliation(s)
- Matthew Gow
- Undergraduate Biomedical Sciences Honours Degree Programmes, University of Strathclyde, Glasgow, UK
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15
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DeRosse P, Malhotra AK, Lencz T. Molecular genetics of the psychosis phenotype. CANADIAN JOURNAL OF PSYCHIATRY. REVUE CANADIENNE DE PSYCHIATRIE 2012; 57:446-53. [PMID: 22762300 PMCID: PMC4211610 DOI: 10.1177/070674371205700708] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE Relative to recent successes in elucidating the genetic mechanisms associated with complex diseases, including macular degeneration, diabetes mellitus, type 2, heart disease, and cancer, molecular genetic approaches to psychiatric illness have met with more limited success. While factors such as small allelic effects, allelic heterogeneity, and variation in population substructure have received considerable attention in attempt to explain the paucity of significant results in psychiatric genetics, significantly less focus has been directed toward phenotypic factors. METHOD Data derived from molecular genetic studies of the psychosis phenotype in patients with a range of psychiatric illnesses are reviewed. RESULTS Available data suggest that genes do not respect the boundaries of the current diagnostic system but may confer risk for symptom-based phenotypic variation that traverses those boundaries. CONCLUSIONS Molecular genetic studies offer convincing evidence for a relation between genetic variation and symptom-based phenotypic variation within psychiatric illness. These data may provide novel insights into the pathophysiology of schizophrenia and other related disorders. The exploration of relations between genetic variation and symptom variation that traverses traditional diagnostic boundaries may ultimately lead to more refined classification systems that more closely reflect the genetic etiology of psychiatric illness.
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Affiliation(s)
- Pamela DeRosse
- Center for Psychiatric Neuroscience, Feinstein Institute for Medical Research, Manhasset, NY, USA.
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16
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Marín-Méndez JJ, Patiño-García A, Segura V, Ortuño F, Gálvez MD, Soutullo CA. Differential expression of prostaglandin D2 synthase (PTGDS) in patients with attention deficit-hyperactivity disorder and bipolar disorder. J Affect Disord 2012; 138:479-84. [PMID: 22370065 DOI: 10.1016/j.jad.2012.01.040] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2011] [Revised: 01/30/2012] [Accepted: 01/30/2012] [Indexed: 12/31/2022]
Abstract
BACKGROUND As marker genes for bipolar disorder (BP) and attention deficit hyperactivity disorder (ADHD) are not fully identified, we carried out a complete genome analysis to search for genes differentially expressed in ADHD and BP. MATERIALS AND METHODS We recruited 39 patients (30 ADHD, 9 BP), aged 7 to 23 years. For evaluation of the psychiatric diagnosis, we used a semi-structured interview based on the K-SADS-PL (DSM-IV). RNA was extracted from peripheral blood and analyzed with the GeneChip® Human Genome U133-Plus 2.0 (Affymetrix). For the validation of differentially expressed genes, real-time PCR was used. RESULTS Hybridization and subsequent statistical analysis found 502 probe-sets with significant differences in expression in ADHD and BP patients. Of these, 82 had highly significant differences. Neuregulin (NRG1), cathepsins B and D (CTSB, CTSD) and prostaglandin-D2-synthase (PTGDS) were chosen for semi-quantitative mRNA determination. The expression of PTGDS was statistically increased in ADHD relative to BP patients (p=0.01). We found no such differential expression with NRG1, CTSB and CTSD genes (p>0.05). CONCLUSIONS The gene coding for PTGDS was found to be more expressed in patients with ADHD relative to patients with BP, indicating a possible link with the differential etiology of ADHD. The experimental approach we have used is, at least in part, validated by the detection of proteins directly concerned with brain functions, and shows a possible way forward for studies of the connection between brain function genes and psychiatric disorders. LIMITATIONS Confirmation of our findings requires a larger sample of patients with clearly-defined phenotypes.
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17
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Konradi C, Daws SE, Clay HB. Mitochondria, oligodendrocytes and inflammation in bipolar disorder: evidence from transcriptome studies points to intriguing parallels with multiple sclerosis. Neurobiol Dis 2012; 45:37-47. [PMID: 21310238 PMCID: PMC3117935 DOI: 10.1016/j.nbd.2011.01.025] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2010] [Revised: 01/24/2011] [Accepted: 01/28/2011] [Indexed: 12/31/2022] Open
Abstract
Gene expression studies of bipolar disorder (BPD) have shown changes in transcriptome profiles in multiple brain regions. Here we summarize the most consistent findings in the scientific literature, and compare them to data from schizophrenia (SZ) and major depressive disorder (MDD). The transcriptome profiles of all three disorders overlap, making the existence of a BPD-specific profile unlikely. Three groups of functionally related genes are consistently expressed at altered levels in BPD, SZ and MDD. Genes involved in energy metabolism and mitochondrial function are downregulated, genes involved in immune response and inflammation are upregulated, and genes expressed in oligodendrocytes are downregulated. Experimental paradigms for multiple sclerosis demonstrate a tight link between energy metabolism, inflammation and demyelination. These studies also show variabilities in the extent of oligodendrocyte stress, which can vary from a downregulation of oligodendrocyte genes, such as observed in psychiatric disorders, to cell death and brain lesions seen in multiple sclerosis. We conclude that experimental models of multiple sclerosis could be of interest for the research of BPD, SZ and MDD.
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Affiliation(s)
- Christine Konradi
- Department of Pharmacology, Vanderbilt University, Nashville, TN 37232, USA.
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18
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Mahar I, Tan S, Davoli MA, Dominguez-Lopez S, Qiang C, Rachalski A, Turecki G, Mechawar N. Subchronic peripheral neuregulin-1 increases ventral hippocampal neurogenesis and induces antidepressant-like effects. PLoS One 2011; 6:e26610. [PMID: 22028923 PMCID: PMC3197569 DOI: 10.1371/journal.pone.0026610] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2011] [Accepted: 09/29/2011] [Indexed: 02/07/2023] Open
Abstract
Background Adult hippocampal neurogenesis has been implicated in the mechanism of antidepressant action, and neurotrophic factors can mediate the neurogenic changes underlying these effects. The neurotrophic factor neuregulin-1 (NRG1) is involved in many aspects of brain development, from cell fate determination to neuronal maturation. However, nothing is known about the influence of NRG1 on neurodevelopmental processes occurring in the mature hippocampus. Methods Adult male mice were given subcutaneous NRG1 or saline to assess dentate gyrus proliferation and neurogenesis, as well as cell fate determination. Mice also underwent behavioral testing. Expression of ErbB3 and ErbB4 NRG1 receptors in newborn dentate gyrus cells was assessed at various time points between birth and maturity. The phenotype of ErbB-expressing progenitor cells was also characterized with cell type-specific markers. Results The current study shows that subchronic peripheral NRG1β administration selectively increased cell proliferation (by 71%) and neurogenesis (by 50%) in the caudal dentate gyrus within the ventral hippocampus. This pro-proliferative effect did not alter neuronal fate, and may have been mediated by ErbB3 receptors, which were expressed by newborn dentate gyrus cells from cell division to maturity and colocalized with SOX2 in the subgranular zone. Furthermore, four weeks after cessation of subchronic treatment, animals displayed robust antidepressant-like behavior in the absence of changes in locomotor activity, whereas acute treatment did not produce antidepressant effects. Conclusions These results show that neuregulin-1β has pro-proliferative, neurogenic and antidepressant properties, further highlight the importance of peripheral neurotrophic factors in neurogenesis and mood, and support the role of hippocampal neurogenesis in mediating antidepressant effects.
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Affiliation(s)
- Ian Mahar
- McGill Group for Suicide Studies, Douglas Mental Health University Institute, McGill University, Verdun, Québec, Canada
- Department of Neurology and Neurosurgery, McGill University, Montréal, Québec, Canada
| | - Stephanie Tan
- McGill Group for Suicide Studies, Douglas Mental Health University Institute, McGill University, Verdun, Québec, Canada
| | - Maria Antonietta Davoli
- McGill Group for Suicide Studies, Douglas Mental Health University Institute, McGill University, Verdun, Québec, Canada
| | | | - Calvin Qiang
- McGill Group for Suicide Studies, Douglas Mental Health University Institute, McGill University, Verdun, Québec, Canada
| | - Adeline Rachalski
- McGill Group for Suicide Studies, Douglas Mental Health University Institute, McGill University, Verdun, Québec, Canada
| | - Gustavo Turecki
- McGill Group for Suicide Studies, Douglas Mental Health University Institute, McGill University, Verdun, Québec, Canada
- Department of Psychiatry and McGill University, Montréal, Québec, Canada
- Department of Neurology and Neurosurgery, McGill University, Montréal, Québec, Canada
| | - Naguib Mechawar
- McGill Group for Suicide Studies, Douglas Mental Health University Institute, McGill University, Verdun, Québec, Canada
- Department of Psychiatry and McGill University, Montréal, Québec, Canada
- Department of Neurology and Neurosurgery, McGill University, Montréal, Québec, Canada
- * E-mail:
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Lett TAP, Zai CC, Tiwari AK, Shaikh SA, Likhodi O, Kennedy JL, Müller DJ. ANK3, CACNA1C and ZNF804A gene variants in bipolar disorders and psychosis subphenotype. World J Biol Psychiatry 2011; 12:392-7. [PMID: 21767209 DOI: 10.3109/15622975.2011.564655] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVES. The ANK3, CACNA1C and ZNF804A genes have been implicated in both bipolar disorders (BPD) and schizophrenia (SCZ). It has been suggested that BPD with psychosis may be a clinical manifestation of genes overlapping between BPD and SCZ. We therefore tested the association of these genes with BPD in a large family-based sample, and then dissected the phenotype into psychosis present or absent subgroups. METHODS. We genotyped four high interest single nucleotide polymorphisms from ANK3 (rs10994336, rs9804190), CACNA1C (rs1006737), and ZNF804A (rs1344706). Family based association testing (FBAT) was performed on 312 families, and within psychotic (N = 158) and non-psychotic BPD (N = 119) subgroups. RESULTS. In the whole sample, we found a nominal association in ZNF804A (rs1344706, P = 0.046), and a trend in CACNA1C (rs1006737, P = 0.077). In the psychotic BPD subgroup, as hypothesized, stronger signals were observed in ZNF804A (P = 0.019) and CACNA1C (P = 0.017). We found no association in the ANK3 markers, but the rs10994336 variant was nominally associated with non-psychotic BPD (P = 0.046). Exploratory analysis revealed the rs1344706 variant was also implicated in suicide-attempt behaviour (P = 0.038). CONCLUSIONS. These tentative results are consistent with the hypothesis that the subphenotype of BPD with psychosis may represent a clinical manifestation of shared genetic liability between BPD and SCZ.
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Affiliation(s)
- Tristram A P Lett
- Neurogenetics Section, Centre for Addiction and Mental Health, Toronto, Canada
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20
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Mahon PB, Pirooznia M, Goes FS, Seifuddin F, Steele J, Lee PH, Huang J, Hamshere M, DePaulo JR, Kelsoe JR, Rietschel M, Nöthen M, Cichon S, Gurling H, Purcell S, Smoller JW, Craddock N, Schulze T, McMahon FJ, Potash JB, Zandi PP. Genome-wide association analysis of age at onset and psychotic symptoms in bipolar disorder. Am J Med Genet B Neuropsychiatr Genet 2011; 156B:370-8. [PMID: 21305692 PMCID: PMC3178836 DOI: 10.1002/ajmg.b.31172] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2010] [Accepted: 01/03/2011] [Indexed: 12/26/2022]
Abstract
Genome-wide association studies (GWAS) have identified several susceptibility loci for bipolar disorder (BP), most notably ANK3. However, most of the inherited risk for BP remains unexplained. One reason for the limited success may be the genetic heterogeneity of BP. Clinical sub-phenotypes of BP may identify more etiologically homogeneous subsets of patients, which can be studied with increased power to detect genetic variation. Here, we report on a mega-analysis of two widely studied sub-phenotypes of BP, age at onset and psychotic symptoms, which are familial and clinically significant. We combined data from three GWAS: NIMH Bipolar Disorder Genetic Association Information Network (GAIN-BP), NIMH Bipolar Disorder Genome Study (BiGS), and a German sample. The combined sample consisted of 2,836 BP cases with information on sub-phenotypes and 2,744 controls. Imputation was performed, resulting in 2.3 million SNPs available for analysis. No SNP reached genome-wide significance for either sub-phenotype. In addition, no SNP reached genome-wide significance in a meta-analysis with an independent replication sample. We had 80% power to detect associations with a common SNP at an OR of 1.6 for psychotic symptoms and a mean difference of 1.8 years in age at onset. Age at onset and psychotic symptoms in BP may be influenced by many genes of smaller effect sizes or other variants not measured well by SNP arrays, such as rare alleles.
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Affiliation(s)
- Pamela Belmonte Mahon
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Mehdi Pirooznia
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Fernando S. Goes
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Fayaz Seifuddin
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Jo Steele
- Genetic Basis of Mood and Anxiety Disorders, National Institute of Mental Health Intramural Research Program, National Institutes of Health, US, Department of Health and Human Services, Bethesda, MD, USA
| | - Phil Hyoun Lee
- Center for Human Genetic Research, Massachusetts General Hospital, Boston, MA, USA
| | - Jie Huang
- Center for Human Genetic Research, Massachusetts General Hospital, Boston, MA, USA
| | - Marian Hamshere
- Department of Psychological Medicine, School of Medicine, Cardiff University, Cardiff, UK
| | | | - J. Raymond DePaulo
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - John R. Kelsoe
- Department of Psychiatry, University of California, San Diego, La Jolla, CA, USA
| | - Marcella Rietschel
- Department of Psychiatry and Psychotherapy, University Medical Center, Georg-August-Universität, Göttingen, Germany
- Department of Psychiatry, University of Bonn, Germany
| | - Markus Nöthen
- Institute of Human Genetics, University of Bonn, Germany
- Departmnet of Genomics, Life & Brain Center, University of Bonn, Germany
| | - Sven Cichon
- Departmnet of Genomics, Life & Brain Center, University of Bonn, Germany
- Institute of Neuroscience and Medicine (INM-1), Research Center Juelich, Juelich, Germany
| | - Hugh Gurling
- Department of Mental Health Sciences, University College London, London, UK
| | - Shaun Purcell
- Center for Human Genetic Research, Massachusetts General Hospital, Boston, MA, USA
| | - Jordan W. Smoller
- Center for Human Genetic Research, Massachusetts General Hospital, Boston, MA, USA
| | - Nick Craddock
- Department of Psychological Medicine, School of Medicine, Cardiff University, Cardiff, UK
| | - ThomasG. Schulze
- Genetic Basis of Mood and Anxiety Disorders, National Institute of Mental Health Intramural Research Program, National Institutes of Health, US, Department of Health and Human Services, Bethesda, MD, USA
- Department of Psychiatry and Psychotherapy, University Medical Center, Georg-August-Universität, Göttingen, Germany
| | - Francis J. McMahon
- Genetic Basis of Mood and Anxiety Disorders, National Institute of Mental Health Intramural Research Program, National Institutes of Health, US, Department of Health and Human Services, Bethesda, MD, USA
| | - James B. Potash
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Peter P. Zandi
- Department of Mental Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
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Gupta A, Schulze TG, Nagarajan V, Akula N, Corona W, Jiang XY, Hunter N, McMahon FJ, Detera-Wadleigh SD. Interaction networks of lithium and valproate molecular targets reveal a striking enrichment of apoptosis functional clusters and neurotrophin signaling. THE PHARMACOGENOMICS JOURNAL 2011; 12:328-41. [PMID: 21383773 PMCID: PMC3134562 DOI: 10.1038/tpj.2011.9] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The overall neurobiological mechanisms by which lithium and valproate stabilize mood in bipolar disorder patients have yet to be fully defined. The therapeutic efficacy and dissimilar chemical structures of these medications suggest that they perturb both shared and disparate cellular processes. To investigate key pathways and functional clusters involved in the global action of lithium and valproate, we generated interaction networks formed by well-supported drug targets. Striking functional similarities emerged. Intersecting nodes in lithium and valproate networks highlighted a strong enrichment of apoptosis clusters and neurotrophin signaling. Other enriched pathways included MAPK, ErbB, insulin, VEGF, Wnt and long-term potentiation indicating a widespread effect of both drugs on diverse signaling systems. MAPK1/3 and AKT1/2 were the most preponderant nodes across pathways suggesting a central role in mediating pathway interactions. The convergence of biological responses unveils a functional signature for lithium and valproate that could be key modulators of their therapeutic efficacy.
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Affiliation(s)
- A Gupta
- Human Genetics Branch, National Institute of Mental Health, National Institutes of Health, Bethesda, MD 20892, USA
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Roussos P, Giakoumaki SG, Adamaki E, Bitsios P. The influence of schizophrenia-related neuregulin-1 polymorphisms on sensorimotor gating in healthy males. Biol Psychiatry 2011; 69:479-86. [PMID: 21035784 DOI: 10.1016/j.biopsych.2010.09.009] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2010] [Revised: 08/10/2010] [Accepted: 09/06/2010] [Indexed: 02/07/2023]
Abstract
BACKGROUND Neuregulin-1 (NRG1) variations have been shown to modulate schizophrenia candidate endophenotypes related to brain structure and function. The objective of this cross-sectional genetic association study was to determine the relationship of six core single-nucleotide polymorphisms within the NRG1 gene identified as promising schizophrenia risk genes (rs6994992, SNP8NRG221132, SNP8NRG241930, rs3924999, rs2439272 and rs10503929) to prepulse inhibition (PPI) of the acoustic startle reflex, a well validated schizophrenia endophenotype. METHODS PPI was tested in a highly homogeneous study entry cohort (n = 445) of carefully screened healthy, young male army conscripts originating from the Greek LOGOS project (Learning on Genetics of Schizophrenia Spectrum). The QTPHASE from the UNPHASED package was used for the association analysis of each single-nucleotide polymorphisms or haplotype data. RESULTS Reduced PPI, particularly at 75-dB_120-msec and 85-dB_60-msec trials, was related to the SNP8NRG241930 G allele and especially the rs6994992 T allele and rs2439272 C allele. Haplotype analysis followed up by risk versus no-risk groups Analysis of variance confirmed that the rs10503929 and rs3924999 SNPs were also associated with PPI reductions, when combined with rs2439272. CONCLUSIONS We provide solid evidence for a role of NRG1 risk genotype variations in PPI reductions in a large and demographically and genetically highly homogeneous cohort of healthy young males. These results further validate NRG1 as a candidate gene for the schizophrenia and spectrum disorders and improve our understanding of its functional mechanisms within the human brain because they suggest an influence of the gene in the neural substrate mediating sensorimotor gating.
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Affiliation(s)
- Panos Roussos
- Department of Psychiatry and Behavioral Sciences, Faculty of Medicine, University of Crete, Heraklion, Crete, Greece.
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23
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Kurian SM, Le-Niculescu H, Patel SD, Bertram D, Davis J, Dike C, Yehyawi N, Lysaker P, Dustin J, Caligiuri M, Lohr J, Lahiri DK, Nurnberger JI, Faraone SV, Geyer MA, Tsuang MT, Schork NJ, Salomon DR, Niculescu AB. Identification of blood biomarkers for psychosis using convergent functional genomics. Mol Psychiatry 2011; 16:37-58. [PMID: 19935739 DOI: 10.1038/mp.2009.117] [Citation(s) in RCA: 126] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
There are to date no objective clinical laboratory blood tests for psychotic disease states. We provide proof of principle for a convergent functional genomics (CFG) approach to help identify and prioritize blood biomarkers for two key psychotic symptoms, one sensory (hallucinations) and one cognitive (delusions). We used gene expression profiling in whole blood samples from patients with schizophrenia and related disorders, with phenotypic information collected at the time of blood draw, then cross-matched the data with other human and animal model lines of evidence. Topping our list of candidate blood biomarkers for hallucinations, we have four genes decreased in expression in high hallucinations states (Fn1, Rhobtb3, Aldh1l1, Mpp3), and three genes increased in high hallucinations states (Arhgef9, Phlda1, S100a6). All of these genes have prior evidence of differential expression in schizophrenia patients. At the top of our list of candidate blood biomarkers for delusions, we have 15 genes decreased in expression in high delusions states (such as Drd2, Apoe, Scamp1, Fn1, Idh1, Aldh1l1), and 16 genes increased in high delusions states (such as Nrg1, Egr1, Pvalb, Dctn1, Nmt1, Tob2). Twenty-five of these genes have prior evidence of differential expression in schizophrenia patients. Predictive scores, based on panels of top candidate biomarkers, show good sensitivity and negative predictive value for detecting high psychosis states in the original cohort as well as in three additional cohorts. These results have implications for the development of objective laboratory tests to measure illness severity and response to treatment in devastating disorders such as schizophrenia.
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Affiliation(s)
- S M Kurian
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, CA, USA
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24
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Walker RM, Christoforou A, Thomson PA, McGhee KA, Maclean A, Mühleisen TW, Strohmaier J, Nieratschker V, Nöthen MM, Rietschel M, Cichon S, Morris SW, Jilani O, Stclair D, Blackwood DH, Muir WJ, Porteous DJ, Evans KL. Association analysis of Neuregulin 1 candidate regions in schizophrenia and bipolar disorder. Neurosci Lett 2010; 478:9-13. [PMID: 20435087 DOI: 10.1016/j.neulet.2010.04.056] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2010] [Revised: 04/15/2010] [Accepted: 04/23/2010] [Indexed: 02/07/2023]
Abstract
Schizophrenia (SCZ) and bipolar disorder (BPD) are severe heritable psychiatric disorders involving a complex genetic aetiology. Neuregulin 1 (NRG1) is a leading candidate gene for SCZ, and has recently been implicated in BPD. We previously reported association of two NRG1 haplotypes with SCZ and BPD in a Scottish case-control sample. One haplotype is located at the 5' end of the gene (region A), and the other is located at the 3' end (region B). Here, association to haplotypes within regions A and B was assessed in patients with SCZ and BPD in a second Scottish case-control sample and in the two Scottish samples combined. Association to region B was also assessed in patients with SCZ and BPD in a German case-control sample, and in all three samples combined. No evidence was found for association in the new samples when analysed individually; however, in the joint analysis of the two Scottish samples, a region B haplotype comprising two SNPs (rs6988339 and rs3757930) was associated with SCZ and the combined case group (SCZ: p=0.0037, OR=1.3, 95% CI: 1.1-1.6; BPD+SCZ: p=0.0080, OR=1.2, 95% CI: 1.1-1.5), with these associations withstanding multiple testing correction at the single-test level (SCZ: p(st)=0.022; BPD+SCZ: p(st)=0.044). This study supports the involvement of NRG1 variants in the less well studied 3' region in conferring susceptibility to SCZ and BPD in the Scottish population.
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Affiliation(s)
- Rosie M Walker
- Medical Genetics Section, Centre for Molecular Medicine and Institute of Genetics and Molecular Medicine, Molecular Medicine Centre, Western General Hospital, University of Edinburgh, Crewe Road, Edinburgh EH4 2XU, UK.
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25
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Ivleva EI, Morris DW, Moates AF, Suppes T, Thaker GK, Tamminga CA. Genetics and intermediate phenotypes of the schizophrenia--bipolar disorder boundary. Neurosci Biobehav Rev 2010; 34:897-921. [PMID: 19954751 DOI: 10.1016/j.neubiorev.2009.11.022] [Citation(s) in RCA: 115] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2009] [Revised: 11/20/2009] [Accepted: 11/23/2009] [Indexed: 12/20/2022]
Abstract
Categorization of psychotic illnesses into schizophrenic and affective psychoses remains an ongoing controversy. Although Kraepelinian subtyping of psychosis was historically beneficial, modern genetic and neurophysiological studies do not support dichotomous conceptualization of psychosis. Evidence suggests that schizophrenia and bipolar disorder rather present a clinical continuum with partially overlapping symptom dimensions, neurophysiology, genetics and treatment responses. Recent large scale genetic studies have produced inconsistent findings and exposed an urgent need for re-thinking phenomenology-based approach in psychiatric research. Epidemiological, linkage and molecular genetic studies, as well as studies in intermediate phenotypes (neurocognitive, neurophysiological and anatomical imaging) in schizophrenia and bipolar disorders are reviewed in order to support a dimensional conceptualization of psychosis. Overlapping and unique genetic and intermediate phenotypic signatures of the two psychoses are comprehensively recapitulated. Alternative strategies which may be implicated into genetic research are discussed.
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Affiliation(s)
- Elena I Ivleva
- Department of Psychiatry, UT Southwestern Medical Center, Dallas, TX 75235, USA.
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