101
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Steinbeis N, Crone E, Blakemore SJ, Cohen Kadosh K. Development holds the key to understanding the interplay of nature versus nurture in shaping the individual. Dev Cogn Neurosci 2018. [PMID: 28629759 PMCID: PMC6987801 DOI: 10.1016/j.dcn.2017.05.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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102
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Boule LA, Ju C, Agudelo M, Parira T, Cannon A, Davis B, Eby J, Cresci G, Samuelson DR, Shukla P, Alrefai WA, Sureshchandra S, Pandey SC, Schnabl B, Curtis BJ, Wyatt TA, Choudhry MA, Kovacs EJ. Summary of the 2016 Alcohol and Immunology Research Interest Group (AIRIG) meeting. Alcohol 2018; 66:35-43. [PMID: 29127885 PMCID: PMC5743588 DOI: 10.1016/j.alcohol.2017.07.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 07/21/2017] [Indexed: 02/06/2023]
Abstract
On November 18, 2016 the 21st annual Alcohol and Immunology Research Interest Group (AIRIG) meeting was held at the Center for Translational Research and Education at Loyola University Chicago's Health Sciences Campus in Maywood, IL. The 2016 meeting focused broadly on alcohol and inflammation, epigenetics, and the microbiome. The four plenary sessions of the meeting were Alcohol, Inflammation, and Immunity; Alcohol and Epigenetics; Alcohol, Transcriptional Regulation, and Epigenetics; and Alcohol, Intestinal Mucosa, and the Gut Microbiome. Presentations in all sessions of the meeting explored putative underlying causes for chronic diseases and mortality associated with alcohol consumption, shedding light on future work and potential therapeutic targets to alleviate the negative effects of alcohol misuse.
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Affiliation(s)
- Lisbeth A Boule
- Alcohol Research Program, Department of Surgery, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO, USA
| | - Cynthia Ju
- Department of Pharmaceutical Sciences, University of Colorado Denver, Skaggs School of Pharmacy and Pharmaceutical Sciences, Aurora, CO, USA
| | - Marisela Agudelo
- Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
| | - Tiyash Parira
- Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
| | - Abigail Cannon
- Burn & Shock Trauma Research Institute, Alcohol Research Program, Loyola University Chicago Health Sciences Division, Maywood, IL, USA
| | - Booker Davis
- Department of Gastroenterology, Rush University Medical Center, Chicago, IL, USA
| | - Jonathan Eby
- Burn & Shock Trauma Research Institute, Alcohol Research Program, Loyola University Chicago Health Sciences Division, Maywood, IL, USA
| | - Gail Cresci
- Pediatric Research Center and Departments of Gastroenterology/Hepatology/Nutrition and Pathobiology, Cleveland Clinic, Cleveland, OH, USA
| | - Derrick R Samuelson
- Department of Internal Medicine, Louisiana State University Health Science Center, New Orleans, LA, USA
| | - Pradeep Shukla
- University of Tennessee Health Science Center, Memphis, TN, USA
| | - Waddah A Alrefai
- Department of Medicine, University of Illinois at Chicago, & Jesse Brown VA Medical Center, Chicago, IL, USA
| | - Suhas Sureshchandra
- Department of Molecular Biology and Biochemistry, University of California Irvine, Irvine, CA, USA
| | - Subhash C Pandey
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, University of Illinois at Chicago & Jesse Brown VA Medical Center, Chicago, IL, USA
| | - Bernd Schnabl
- Department of Medicine, University of California San Diego, La Jolla, CA, USA; Department of Medicine, VA San Diego Healthcare System, San Diego, CA, USA
| | - Brenda J Curtis
- Alcohol Research Program, Department of Surgery, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO, USA
| | - Todd A Wyatt
- VA Nebraska-Western Iowa Health Care System, Omaha, NE, USA; Department of Environmental, Agricultural and Occupational Health, University of Nebraska Medical Center, Omaha, NE, USA
| | - Mashkoor A Choudhry
- Burn & Shock Trauma Research Institute, Alcohol Research Program, Loyola University Chicago Health Sciences Division, Maywood, IL, USA
| | - Elizabeth J Kovacs
- Alcohol Research Program, Department of Surgery, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO, USA.
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103
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Schalinski I, Teicher MH, Carolus AM, Rockstroh B. Defining the impact of childhood adversities on cognitive deficits in psychosis: An exploratory analysis. Schizophr Res 2018; 192:351-356. [PMID: 28576548 DOI: 10.1016/j.schres.2017.05.014] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Revised: 04/30/2017] [Accepted: 05/12/2017] [Indexed: 12/14/2022]
Abstract
BACKGROUND Exposure to adverse childhood experiences (ACE) and cognitive deficits are both prevalent in psychosis. While it has been repeatedly demonstrated that ACE contribute to cognitive dysfunctions, the specific nature of this contribution remains elusive. Recent evidence suggests that types of adversities during critical periods have deleterious effects on brain structures that are important for cognitive functioning. The present study sought to clarify which types of adversities experienced at which time during development aggravate cognitive deficits in psychosis. METHODS Exposure to abuse and neglect during childhood and adolescence were retrospectively assessed in N=168 adult individuals with psychotic disorder. Conditioned random forest regression was used to define the importance of type and timing of ACE for predicting domains of the MATRICS Consensus Cognitive Battery (MCCB). RESULTS Significant importance of ACE was determined for 5 out of 7 MCCB domains. Particularly abuse at age 3 contributed to dysfunctional cognitive domains attention, learning, and working memory. Social cognition was related to neglect experienced at 11-12years, and to cumulative ACE. CONCLUSION Abuse and neglect at periods when children spend substantial time in their families affect cognitive functioning, and hence aggravate dysfunction in psychosis. Results support the neurodevelopmental perspective on psychosis and the diagnostic value of type and timing of ACE.
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Affiliation(s)
| | - Martin H Teicher
- Department of Psychiatry, Harvard Medical School, Boston, MA, USA; Developmental Biopsychiatry Research Program, McLean Hospital, Belmont, MA, USA
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Hartung H, Cichon N, De Feo V, Riemann S, Schildt S, Lindemann C, Mulert C, Gogos JA, Hanganu-Opatz IL. From Shortage to Surge: A Developmental Switch in Hippocampal-Prefrontal Coupling in a Gene-Environment Model of Neuropsychiatric Disorders. Cereb Cortex 2018; 26:4265-4281. [PMID: 27613435 PMCID: PMC5066837 DOI: 10.1093/cercor/bhw274] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Accepted: 08/10/2016] [Indexed: 12/21/2022] Open
Abstract
Cognitive deficits represent a major burden of neuropsychiatric disorders and result in part from abnormal communication within hippocampal–prefrontal circuits. While it has been hypothesized that this network dysfunction arises during development, long before the first clinical symptoms, experimental evidence is still missing. Here, we show that pre-juvenile mice mimicking genetic and environmental risk factors of disease (dual-hit GE mice) have poorer recognition memory that correlates with augmented coupling by synchrony and stronger directed interactions between prefrontal cortex and hippocampus. The network dysfunction emerges already during neonatal development, yet it initially consists in a diminished hippocampal theta drive and consequently, a weaker and disorganized entrainment of local prefrontal circuits in discontinuous oscillatory activity in dual-hit GE mice when compared with controls. Thus, impaired maturation of functional communication within hippocampal–prefrontal networks switching from hypo- to hyper-coupling may represent a mechanism underlying the pathophysiology of cognitive deficits in neuropsychiatric disorders.
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Affiliation(s)
- Henrike Hartung
- Developmental Neurophysiology, Institute of Neuroanatomy, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany.,Laboratory of Neurobiology, Department of Biosciences, University of Helsinki, 00014 Helsinki, Finland
| | - Nicole Cichon
- Developmental Neurophysiology, Institute of Neuroanatomy, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Vito De Feo
- Developmental Neurophysiology, Institute of Neuroanatomy, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany.,Laboratory of Neural Computation, Center for Neuroscience and Cognitive Systems, Istituto Italiano di Tecnologia, 38068 Rovereto, Italy
| | - Stephanie Riemann
- Developmental Neurophysiology, Institute of Neuroanatomy, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany.,Current address: German Center for Neurodegenerative Diseases (DZNE), 39120 Magdeburg, Germany
| | - Sandra Schildt
- Developmental Neurophysiology, Institute of Neuroanatomy, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Christoph Lindemann
- Developmental Neurophysiology, Institute of Neuroanatomy, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Christoph Mulert
- Department of Psychiatry and Psychotherapy, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Joseph A Gogos
- Department of Neuroscience, Columbia University, New York, NY 10032, USA.,Department of Physiology, Columbia University, New York, NY 10032, USA
| | - Ileana L Hanganu-Opatz
- Developmental Neurophysiology, Institute of Neuroanatomy, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany
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105
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Saraulli D, Costanzi M, Mastrorilli V, Farioli-Vecchioli S. The Long Run: Neuroprotective Effects of Physical Exercise on Adult Neurogenesis from Youth to Old Age. Curr Neuropharmacol 2018; 15:519-533. [PMID: 27000776 PMCID: PMC5543673 DOI: 10.2174/1570159x14666160412150223] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 03/08/2016] [Accepted: 03/16/2016] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND The rapid lengthening of life expectancy has raised the problem of providing social programs to counteract the age-related cognitive decline in a growing number of older people. Physical activity stands among the most promising interventions aimed at brain wellbeing, because of its effective neuroprotective action and low social cost. The purpose of this review is to describe the neuroprotective role exerted by physical activity in different life stages. In particular, we focus on adult neurogenesis, a process which has proved being highly responsive to physical exercise and may represent a major factor of brain health over the lifespan. METHODS The most recent literature related to the subject has been reviewed. The text has been divided into three main sections, addressing the effects of physical exercise during childhood/ adolescence, adulthood and aging, respectively. For each one, the most relevant studies, carried out on both human participants and rodent models, have been described. RESULTS The data reviewed converge in indicating that physical activity exerts a positive effect on brain functioning throughout the lifespan. However, uncertainty remains about the magnitude of the effect and its biological underpinnings. Cellular and synaptic plasticity provided by adult neurogenesis are highly probable mediators, but the mechanism for their action has yet to be conclusively established. CONCLUSION Despite alternative mechanisms of action are currently debated, age-appropriate physical activity programs may constitute a large-scale, relatively inexpensive and powerful approach to dampen the individual and social impact of age-related cognitive decline.
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Affiliation(s)
- Daniele Saraulli
- Institute of Cell Biology and Neurobiology, National Research Council, & Fondazione S. Lucia, Rome. Italy
| | - Marco Costanzi
- Department of Human Sciences, LUMSA University, Rome. Italy
| | - Valentina Mastrorilli
- Institute of Cell Biology and Neurobiology, National Research Council, & Fondazione S. Lucia, Rome. Italy
| | - Stefano Farioli-Vecchioli
- Institute of Cell Biology and Neurobiology, National Research Council, Via del Fosso di Fiorano 64, 00143 Rome. Italy
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106
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Morphometry and Development: Changes in Brain Structure from Birth to Adult Age. NEUROMETHODS 2018. [DOI: 10.1007/978-1-4939-7647-8_10] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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107
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Gray Matter Neuritic Microstructure Deficits in Schizophrenia and Bipolar Disorder. Biol Psychiatry 2017; 82:726-736. [PMID: 28073491 DOI: 10.1016/j.biopsych.2016.12.005] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 10/26/2016] [Accepted: 12/01/2016] [Indexed: 01/08/2023]
Abstract
BACKGROUND Postmortem studies have demonstrated considerable dendritic pathologies among persons with schizophrenia and to some extent among those with bipolar I disorder. Modeling gray matter (GM) microstructural properties is now possible with a recently proposed diffusion-weighted magnetic resonance imaging modeling technique: neurite orientation dispersion and density imaging. This technique may bridge the gap between neuroimaging and histopathological findings. METHODS We performed an extended series of multishell diffusion-weighted imaging and other structural imaging series using 3T magnetic resonance imaging. Participants scanned included individuals with schizophrenia (n = 36), bipolar I disorder (n = 29), and healthy controls (n = 35). GM-based spatial statistics was used to compare neurite orientation dispersion and density imaging-driven microstructural measures (orientation dispersion index and neurite density index [NDI]) among groups and to assess their relationship with neurocognitive performance. We also investigated the accuracy of these measures in the prediction of group membership, and whether combining them with cortical thickness and white matter fractional anisotropy further improved accuracy. RESULTS The GM-NDI was significantly lower in temporal pole, anterior parahippocampal gyrus, and hippocampus of the schizophrenia patients than the healthy controls. The GM-NDI of patients with bipolar I disorder did not differ significantly from either schizophrenia patients or healthy controls, and it was intermediate between the two groups in the post hoc analysis. Regardless of diagnosis, higher performance in spatial working memory was significantly associated with higher GM-NDI mainly in the frontotemporal areas. The addition of GM-NDI to cortical thickness resulted in higher accuracy to predict group membership. CONCLUSIONS GM-NDI captures brain differences in the major psychoses that are not accessible with other structural magnetic resonance imaging methods. Given the strong association of GM-NDI with disease state and neurocognitive performance, its potential utility for biological subtyping should be further explored.
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108
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Barbayannis G, Franco D, Wong S, Galdamez J, Romeo RD, Bauer EP. Differential effects of stress on fear learning and activation of the amygdala in pre-adolescent and adult male rats. Neuroscience 2017; 360:210-219. [PMID: 28768158 PMCID: PMC5973547 DOI: 10.1016/j.neuroscience.2017.07.058] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 06/21/2017] [Accepted: 07/21/2017] [Indexed: 10/19/2022]
Abstract
Adolescence is accompanied by the maturation of several stress-responsive areas of the brain including the amygdala, a key region for the acquisition and expression of conditioned fear. These changes may contribute to the development of stress-related disorders in adolescence, such as anxiety and depression, and increase the susceptibility to these psychopathologies later in life. Here, we assessed the effects of acute restraint stress on fear learning and amygdala activation in pre-adolescent and adult male rats. Pre-adolescents exposed to stress prior to fear conditioning showed greater resistance to the extinction of fear memories than adults. At the cellular level, the combination of stress and fear conditioning resulted in a greater number of FOS-positive cells in the basolateral nucleus of the amygdala (BLA) than fear conditioning alone, and this increase was greater in pre-adolescents than in adults. Despite age-dependent differences, we found no changes in glucocorticoid receptor (GR) levels in the amygdala of either pre-adolescent or adult males. Overall, our data indicate that stress prior to fear conditioning leads to extinction-resistant fear responses in pre-adolescent animals, and that the BLA may be one neural locus mediating these age-dependent effects of stress on fear learning.
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Affiliation(s)
- Georgia Barbayannis
- Departments of Biology and Psychology and Neuroscience and Behavior Program, Barnard College of Columbia University, 3009 Broadway, New York, NY 10027, United States
| | - Daly Franco
- Departments of Biology and Psychology and Neuroscience and Behavior Program, Barnard College of Columbia University, 3009 Broadway, New York, NY 10027, United States
| | - Solange Wong
- Departments of Biology and Psychology and Neuroscience and Behavior Program, Barnard College of Columbia University, 3009 Broadway, New York, NY 10027, United States
| | - Josselyn Galdamez
- Departments of Biology and Psychology and Neuroscience and Behavior Program, Barnard College of Columbia University, 3009 Broadway, New York, NY 10027, United States
| | - Russell D Romeo
- Departments of Biology and Psychology and Neuroscience and Behavior Program, Barnard College of Columbia University, 3009 Broadway, New York, NY 10027, United States
| | - Elizabeth P Bauer
- Departments of Biology and Psychology and Neuroscience and Behavior Program, Barnard College of Columbia University, 3009 Broadway, New York, NY 10027, United States.
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Kyzar EJ, Zhang H, Sakharkar AJ, Pandey SC. Adolescent alcohol exposure alters lysine demethylase 1 (LSD1) expression and histone methylation in the amygdala during adulthood. Addict Biol 2017; 22:1191-1204. [PMID: 27183824 DOI: 10.1111/adb.12404] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Revised: 03/08/2016] [Accepted: 03/16/2016] [Indexed: 12/27/2022]
Abstract
Alcohol exposure in adolescence is an important risk factor for the development of alcoholism in adulthood. Epigenetic processes are implicated in the persistence of adolescent alcohol exposure-related changes, specifically in the amygdala. We investigated the role of histone methylation mechanisms in the persistent effects of adolescent intermittent ethanol (AIE) exposure in adulthood. Adolescent rats were exposed to 2 g/kg ethanol (2 days on/off) or intermittent n-saline (AIS) during postnatal days (PND) 28-41 and used for behavioral and epigenetic studies. We found that AIE exposure caused a long-lasting decrease in mRNA and protein levels of lysine demethylase 1(Lsd1) and mRNA levels of Lsd1 + 8a (a neuron-specific splice variant) in specific amygdaloid structures compared with AIS-exposed rats when measured at adulthood. Interestingly, AIE increased histone H3 lysine 9 dimethylation (H3K9me2) levels in the central nucleus of the amygdala (CeA) and medial nucleus of the amygdala (MeA) in adulthood without producing any change in H3K4me2 protein levels. Acute ethanol challenge (2 g/kg) in adulthood attenuated anxiety-like behaviors and the decrease in Lsd1 + 8a mRNA levels in the amygdala induced by AIE. AIE caused an increase in H3K9me2 occupancy at the brain-derived neurotrophic factor exon IV promoter in the amygdala that returned to baseline after acute ethanol challenge in adulthood. These results indicate that AIE specifically modulates epizymes involved in H3K9 dimethylation in the amygdala in adulthood, which are possibly responsible for AIE-induced chromatin remodeling and adult psychopathology such as anxiety.
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Affiliation(s)
- Evan J. Kyzar
- Center for Alcohol Research in Epigenetics, Department of Psychiatry; University of Illinois at Chicago; Chicago IL USA
- Jesse Brown Veterans Affairs Medical Center; Chicago IL USA
| | - Huaibo Zhang
- Center for Alcohol Research in Epigenetics, Department of Psychiatry; University of Illinois at Chicago; Chicago IL USA
- Jesse Brown Veterans Affairs Medical Center; Chicago IL USA
| | - Amul J. Sakharkar
- Center for Alcohol Research in Epigenetics, Department of Psychiatry; University of Illinois at Chicago; Chicago IL USA
- Jesse Brown Veterans Affairs Medical Center; Chicago IL USA
| | - Subhash C. Pandey
- Center for Alcohol Research in Epigenetics, Department of Psychiatry; University of Illinois at Chicago; Chicago IL USA
- Jesse Brown Veterans Affairs Medical Center; Chicago IL USA
- Department of Anatomy and Cell Biology; University of Illinois at Chicago; Chicago IL USA
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110
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Kokare DM, Kyzar EJ, Zhang H, Sakharkar AJ, Pandey SC. Adolescent Alcohol Exposure-Induced Changes in Alpha-Melanocyte Stimulating Hormone and Neuropeptide Y Pathways via Histone Acetylation in the Brain During Adulthood. Int J Neuropsychopharmacol 2017; 20:758-768. [PMID: 28575455 PMCID: PMC5581492 DOI: 10.1093/ijnp/pyx041] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Revised: 04/15/2017] [Accepted: 05/30/2017] [Indexed: 12/18/2022] Open
Abstract
Background Adolescent intermittent ethanol exposure causes long-lasting alterations in brain epigenetic mechanisms. Melanocortin and neuropeptide Y signaling interact and are affected by ethanol exposure in the brain. Here, the persistent effects of adolescent intermittent ethanol on alpha-melanocyte stimulating hormone, melanocortin 4 receptor, and neuropeptide Y expression and their regulation by histone acetylation mechanisms were investigated in adulthood. Methods Male rats were exposed to adolescent intermittent ethanol (2 g/kg, i.p.) or volume-matched adolescent intermittent saline from postnatal days 28 to 41 and allowed to grow to postnatal day 92. Anxiety-like behaviors were measured by the elevated plus-maze test. Brain regions from adult rats were used to examine changes in alpha-melanocyte stimulating hormone, melanocortin 4 receptor, and neuropeptide Y expression and the histone acetylation status of their promoters. Results Adolescent intermittent ethanol-exposed adult rats displayed anxiety-like behaviors and showed increased pro-opiomelanocortin mRNA levels in the hypothalamus and increased melanocortin 4 receptor mRNA levels in both the amygdala and hypothalamus compared with adolescent intermittent saline-exposed adult rats. The alpha-Melanocyte stimulating hormone and melanocortin 4 receptor protein levels were increased in the central and medial nucleus of the amygdala, paraventricular nucleus, and arcuate nucleus of the hypothalamus in adolescent intermittent ethanol-exposed compared with adolescent intermittent saline-exposed adult rats. Neuropeptide Y protein levels were decreased in the central and medial nucleus of the amygdala of adolescent intermittent ethanol-exposed compared with adolescent intermittent saline-exposed adult rats. Histone H3K9/14 acetylation was decreased in the neuropeptide Y promoter in the amygdala but increased in the melanocortin 4 receptor gene promoter in the amygdala and the melanocortin 4 receptor and pro-opiomelanocortin promoters in the hypothalamus of adolescent intermittent ethanol-exposed adult rats compared with controls. Conclusions Increased melanocortin and decreased neuropeptide Y activity due to changes in histone acetylation in emotional brain circuitry may play a role in adolescent intermittent ethanol-induced anxiety phenotypes in adulthood.
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Affiliation(s)
- Dadasaheb M Kokare
- Center for Alcohol Research in Epigenetics, Department of Psychiatry (Dr Kokare, Mr Kyzar, and Drs Zhang, Sakharkar, and Pandey), and Department of Anatomy and Cell Biology (Dr Pandey), University of Illinois at Chicago, Chicago; Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois (Mr Kyzar and Drs Zhang, Sakharkar, and Pandey)
| | - Evan J Kyzar
- Center for Alcohol Research in Epigenetics, Department of Psychiatry (Dr Kokare, Mr Kyzar, and Drs Zhang, Sakharkar, and Pandey), and Department of Anatomy and Cell Biology (Dr Pandey), University of Illinois at Chicago, Chicago; Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois (Mr Kyzar and Drs Zhang, Sakharkar, and Pandey)
| | - Huaibo Zhang
- Center for Alcohol Research in Epigenetics, Department of Psychiatry (Dr Kokare, Mr Kyzar, and Drs Zhang, Sakharkar, and Pandey), and Department of Anatomy and Cell Biology (Dr Pandey), University of Illinois at Chicago, Chicago; Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois (Mr Kyzar and Drs Zhang, Sakharkar, and Pandey)
| | - Amul J Sakharkar
- Center for Alcohol Research in Epigenetics, Department of Psychiatry (Dr Kokare, Mr Kyzar, and Drs Zhang, Sakharkar, and Pandey), and Department of Anatomy and Cell Biology (Dr Pandey), University of Illinois at Chicago, Chicago; Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois (Mr Kyzar and Drs Zhang, Sakharkar, and Pandey)
| | - Subhash C Pandey
- Center for Alcohol Research in Epigenetics, Department of Psychiatry (Dr Kokare, Mr Kyzar, and Drs Zhang, Sakharkar, and Pandey), and Department of Anatomy and Cell Biology (Dr Pandey), University of Illinois at Chicago, Chicago; Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois (Mr Kyzar and Drs Zhang, Sakharkar, and Pandey)
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111
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Mercader-Yus E, Neipp-López MC, Gómez-Méndez P, Vargas-Torcal F, Gelves-Ospina M, Puerta-Morales L, León-Jacobus A, Cantillo-Pacheco K, Mancera-Sarmiento M. Anxiety, Self-esteem and Body Image in Girls with Precocious Puberty. ACTA ACUST UNITED AC 2017; 47:229-236. [PMID: 30286845 DOI: 10.1016/j.rcp.2017.05.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Revised: 04/18/2017] [Accepted: 05/15/2017] [Indexed: 11/25/2022]
Abstract
Currently, the age of onset for pubertal changes is decreasing, especially in girls, which may have an impact on psychosocial factors such as anxiety, self-esteem and body image. The aim of the present study is to compare these variables in two groups: a group of 15 girls with precocious puberty and a group of 16 girls of the same age without precocious puberty. A non-experimental descriptive design was used and the State-Trait Anxiety Inventory for Children (STAIC) and Self-Description Questionnaire (SDQ) were used to measure variables. Significant differences were found in Anxiety and Body Image levels between groups, but there were no differences in Self-Esteem levels. In conclusion, the findings show girls with early onset pubertal changes present high anxiety levels and negative body image compared to girls who start pubertal changes at the normal time.
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112
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Fan L, Jiang T. Mapping Underlying Maturational Changes in Human Brain. Neurosci Bull 2017; 33:478-480. [PMID: 28540534 DOI: 10.1007/s12264-017-0141-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2017] [Accepted: 04/07/2017] [Indexed: 01/25/2023] Open
Affiliation(s)
- Lingzhong Fan
- Brainnetome Center, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100190, China
| | - Tianzi Jiang
- Brainnetome Center, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China. .,National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China. .,CAS Center for Excellence in Brain Science and Intelligence Technology, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China. .,Key Laboratory for NeuroInformation of the Ministry of Education, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, 625014, China. .,The Queensland Brain Institute, University of Queensland, Brisbane, QLD, 4072, Australia. .,University of Chinese Academy of Sciences, Beijing, 100190, China.
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113
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Gomes FV, Grace AA. Prefrontal Cortex Dysfunction Increases Susceptibility to Schizophrenia-Like Changes Induced by Adolescent Stress Exposure. Schizophr Bull 2017; 43:592-600. [PMID: 28003467 PMCID: PMC5464092 DOI: 10.1093/schbul/sbw156] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Stress during adolescence is a risk factor for schizophrenia, and medial prefrontal cortex (mPFC) dysfunction is proposed to interfere with stress control, increasing the susceptibility to stress. We evaluated the impact of different stressful events during adolescence (restraint stress [RS], footshock [FS], or the combination of FS and RS) on behaviors correlated with schizophrenia in rats as adults. At adulthood, animals were tested for anxiety responses (elevated plus-maze), cognitive function (novel-object recognition test) and dopamine (DA) system responsivity (locomotor response to amphetamine and DA neuron activity in the ventral tegmental area (VTA) using in vivo electrophysiology). All adolescent stressors impaired weight gain and induced anxiety-like responses in adults. FS and FS + RS also disrupted cognitive function. Interestingly, only the combination of FS and RS induced a DA hyper-responsivity as indicated by augmented locomotor response to amphetamine and increased number of spontaneously active DA neurons which was confined to the lateral VTA. Additionally, prelimbic (pl) mPFC lesions triggered a DA hyper-responsivity in animals exposed to FS alone during adolescence. Our results are consistent with previous studies showing long-lasting changes induced by stressful events during adolescence. The impact on DA system activity, however, seems to depend on intense multiple stressors. Our data also suggest that plPFC dysfunction increases the vulnerability to stress in terms of changes in the DA system. Hence, stress during adolescence could be a precipitating factor for the transition to schizophrenia, and stress control at this vulnerable period may circumvent these changes to prevent the emergence of psychosis.
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Affiliation(s)
- Felipe V. Gomes
- Departments of Neuroscience, Psychiatry and Psychology, University of Pittsburgh, Pittsburgh, PA
| | - Anthony A. Grace
- Departments of Neuroscience, Psychiatry and Psychology, University of Pittsburgh, Pittsburgh, PA
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114
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Moe AAK, Medely GA, Reeks T, Burne THJ, Eyles DW. Short- and long-term effects of risperidone on catalepsy sensitisation and acquisition of conditioned avoidance response: Adolescent vs adult rats. Pharmacol Res 2017; 121:1-13. [PMID: 28414178 DOI: 10.1016/j.phrs.2017.04.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Accepted: 04/11/2017] [Indexed: 01/17/2023]
Abstract
The effects of antipsychotic drugs (APDs) on the adolescent brain are poorly understood despite a dramatic increase in prescription of these drugs in adolescents over the past twenty years. Neuronal systems continue to be remodeled during adolescence. Therefore, when given in adolescence, antipsychotic drugs (APDs) have the potential to affect this remodeling. In this study we investigated the effects of chronic 22-day risperidone treatment (1.3mg/kg/day) in both adolescent and adult rats. We examined short- and long-term changes in behaviour (catalepsy, locomotion and conditioned avoidance response (CAR)), and dopaminergic and serotonergic neurochemistry in the striatum and the nucleus accumbens. Here, we report that, both during chronic treatment and after a lengthy drug-free interval, risperidone induced a sensitised cataleptic response regardless of the age of exposure. Selectively in adolescents, risperidone-induced catalepsy was inversely correlated with striatal dopamine turnover immediately after chronic treatment. After a drug-free interval, a significant proportion of rats with prior adolescent risperidone treatment also failed to acquire CAR to a defined criterion. Our data provide evidence that the same chronic risperidone treatment regimen can induce contrasting short- and long-term neural outcomes in the adolescent and adult brains.
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Affiliation(s)
| | - Gregory A Medely
- Queensland Brain Institute, The University of Queensland, Australia
| | - Timothy Reeks
- Queensland Brain Institute, The University of Queensland, Australia
| | - Thomas H J Burne
- Queensland Brain Institute, The University of Queensland, Australia; Queensland Centre for Mental Health Research, Australia
| | - Darryl W Eyles
- Queensland Brain Institute, The University of Queensland, Australia; Queensland Centre for Mental Health Research, Australia.
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115
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Camfield P, Camfield C, Busiah K, Cohen D, Pack A, Nabbout R. The transition from pediatric to adult care for youth with epilepsy: Basic biological, sociological, and psychological issues. Epilepsy Behav 2017; 69:170-176. [PMID: 28089368 DOI: 10.1016/j.yebeh.2016.11.009] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Accepted: 11/06/2016] [Indexed: 01/03/2023]
Abstract
Transition from pediatric to adult health care for adolescents with epilepsy is challenging for the patient, family, and health care workers. This paper is the first of three that summarize the main findings from the 2nd Symposium on Transition in Epilepsies, held in Paris from June 14-25, 2016. In this paper we describe five basic themes that have an important effect on transition. First, there are important brain changes in adolescence that leave an imbalance between risk taking and pleasure seeking behaviors and frontal executive function compared with adults. Second, puberty is a major change during the transition age. The three most important but separate neuroendocrine axes involved in puberty are gonadarche (activation of the gonads), adrenarche (activation of adrenal androgen production), and activation of the growth hormone-insulin like growth factor. Third, sexual debut occurs during the transition years, and at an earlier age in adolescents with epilepsy than controls. Adult sexual performance is often unsatisfactory. Although AED-induced alterations in sexual hormones and temporal lobe epilepsy may play a role in hyposexuality, depression, anxiety, and other social factors appear most important. Fourth, psychological development is very important with an evolution from an early stage (ages 10-13years) with concrete thinking, to a middle stage (ages 14-17) with analytic and more abstract introspective thinking, and then to a late stage (ages 18-21) with at least the beginnings of adult reasoning. Epilepsy may derail this relatively orderly progression. Adolescents with autistic spectrum disorder may present with severe behavior problems that are sometimes related to undiagnosed epilepsy. Fifth, bone health in adolescence is critical to establish adequate mineralization for all of adult life. While AED interference with Vitamin D metabolism is important, there is evidence that the effects of AEDs on bone are more complex and involve changes in remodeling. Hence, some non-inducing AEDs may have a significant effect on bone health. All five of these themes lead to recommendations for how to approach adolescents and young adults during transition and some specific interventions to achieve maximum long-term adult independence and quality of life.
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Affiliation(s)
- Peter Camfield
- Dalhousie University and IWK Health Centre, Halifax, Nova Scotia, Canada; Pediatric Department, Dalhousie University and IWK Health Centre, Halifax, Nova Scotia, Canada.
| | - Carol Camfield
- Dalhousie University and IWK Health Centre, Halifax, Nova Scotia, Canada; Pediatric Department, Dalhousie University and IWK Health Centre, Halifax, Nova Scotia, Canada
| | - Kanetee Busiah
- Trousseau Hospital and Necker-Enfants Malades Hospital, APHP, Paris, France
| | - David Cohen
- Université Pierre et Marie Curie and Pitié-Salpétrière, Paris, France
| | - Alison Pack
- Columbia University Medical Center, New York, NY, United States
| | - Rima Nabbout
- Reference centre for rare epilepsies, Pediatric Neurology, Necker-Enfants Malades University Hospital, APHP, University of Paris Descartes, Inserm U1129, Paris, France
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116
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DeMaso DR, Calderon J, Taylor GA, Holland JE, Stopp C, White MT, Bellinger DC, Rivkin MJ, Wypij D, Newburger JW. Psychiatric Disorders in Adolescents With Single Ventricle Congenital Heart Disease. Pediatrics 2017; 139:peds.2016-2241. [PMID: 28148729 PMCID: PMC5330395 DOI: 10.1542/peds.2016-2241] [Citation(s) in RCA: 129] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/30/2016] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Mental health outcomes for survivors of critical congenital heart disease (CHD) remain under-investigated. We sought to examine psychiatric disorders and psychosocial functioning in adolescents with single ventricle CHD and to explore whether patient-related risk factors predict dysfunction. METHODS This cohort study recruited 156 adolescents with single ventricle CHD who underwent the Fontan procedure and 111 healthy referents. Participants underwent comprehensive psychiatric evaluation including a clinician-rated psychiatric interview and parent- and self-report ratings of anxiety, disruptive behavior, including attention-deficit/hyperactivity disorder (ADHD), and depressive symptoms. Risk factors for dysfunction included IQ, medical characteristics, and concurrent brain abnormalities. RESULTS Adolescents with single ventricle CHD had higher rates of lifetime psychiatric diagnosis compared with referents (CHD: 65%, referent: 22%; P < .001). Specifically, they had higher rates of lifetime anxiety disorder and ADHD (P < .001 each). The CHD group scored lower on the primary psychosocial functioning measure, the Children's Global Assessment Scale, than referents (CHD median [interquartile range]: 62 [54-66], referent: 85 [73-90]; P < .001). The CHD group scored worse on measures of anxiety, disruptive behavior, and depressive symptoms. Genetic comorbidity did not impact most psychiatric outcomes. Risk factors for anxiety disorder, ADHD, and lower psychosocial functioning included lower birth weight, longer duration of deep hypothermic circulatory arrest, lower intellectual functioning, and male gender. CONCLUSIONS Adolescents with single ventricle CHD display a high risk of psychiatric morbidity, particularly anxiety disorders and ADHD. Early identification of psychiatric symptoms is critical to the management of patients with CHD.
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Affiliation(s)
- David R. DeMaso
- Departments of Psychiatry,,Cardiology, and,Departments of Psychiatry
| | | | | | | | | | | | - David C. Bellinger
- Departments of Psychiatry,,Neurology, Boston Children’s Hospital, Boston, Massachusetts;,Departments of Psychiatry,,Neurology, and
| | - Michael J. Rivkin
- Departments of Psychiatry,,Neurology, Boston Children’s Hospital, Boston, Massachusetts;,Neurology, and
| | - David Wypij
- Cardiology, and,Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
| | - Jane W. Newburger
- Cardiology, and,Pediatrics, Harvard Medical School, Boston, Massachusetts; and
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117
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Pandey SC, Kyzar EJ, Zhang H. Epigenetic basis of the dark side of alcohol addiction. Neuropharmacology 2017; 122:74-84. [PMID: 28174112 DOI: 10.1016/j.neuropharm.2017.02.002] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2017] [Accepted: 02/02/2017] [Indexed: 12/13/2022]
Abstract
Alcoholism is a complex brain disease characterized by three distinct stages of the addiction cycle that manifest as neuroadaptive changes in the brain. One such stage of the addiction cycle is alcohol withdrawal and the negative affective states that promote drinking and maintain addiction. Repeated alcohol use, genetic predisposition to alcoholism and anxiety, and alcohol exposure during crucial developmental periods all contribute to the development of alcohol-induced withdrawal and negative affective symptoms. Epigenetic modifications within the amygdala have provided a molecular basis of these negative affective symptoms, also known as the dark side of addiction. Here, we propose that allostatic change within the epigenome in the amygdala is a prime mechanism of the biological basis of negative affective states resulting from, and contributing to, alcoholism. Acute alcohol exposure produces an anxiolytic response which is associated with the opening of chromatin due to increased histone acetylation, increased CREB binding protein (CBP) levels, and histone deacetylase (HDAC) inhibition. After chronic ethanol exposure, these changes return to baseline along with anxiety-like behaviors. However, during withdrawal, histone acetylation decreases due to increased HDAC activity and decreased CBP levels in the amygdala circuitry leading to the development of anxiety-like behaviors. Additionally, innately higher expression of the HDAC2 isoform leads to a deficit in global and gene-specific histone acetylation in the amygdala that is associated with a decrease in the expression of several synaptic plasticity-associated genes and maintaining heightened anxiety-like behavior and excessive alcohol intake. Adolescent alcohol exposure also leads to higher expression of HDAC2 and a deficit in histone acetylation leading to decreased expression of synaptic plasticity-associated genes and high anxiety and drinking behavior in adulthood. All these studies indicate that the epigenome can undergo allostatic reprogramming in the amygdaloid circuitry during various stages of alcohol exposure. Furthermore, opening the chromatin by inhibiting HDACs using pharmacological or genetic manipulations can lead to the attenuation of anxiety as well as alcohol intake. Chromatin remodeling provides a clear biological basis for the negative affective states seen during alcohol addiction and presents opportunities for novel drug development and treatment options. This article is part of the Special Issue entitled "Alcoholism".
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Affiliation(s)
- Subhash C Pandey
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, University of Illinois at Chicago, Chicago, IL, 60612, USA; Jesse Brown Veterans Affairs Medical Center, Chicago, IL, 60612, USA.
| | - Evan J Kyzar
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, University of Illinois at Chicago, Chicago, IL, 60612, USA; Jesse Brown Veterans Affairs Medical Center, Chicago, IL, 60612, USA
| | - Huaibo Zhang
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, University of Illinois at Chicago, Chicago, IL, 60612, USA; Jesse Brown Veterans Affairs Medical Center, Chicago, IL, 60612, USA
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118
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Guma E, Devenyi GA, Malla A, Shah J, Chakravarty MM, Pruessner M. Neuroanatomical and Symptomatic Sex Differences in Individuals at Clinical High Risk for Psychosis. Front Psychiatry 2017; 8:291. [PMID: 29312018 PMCID: PMC5744013 DOI: 10.3389/fpsyt.2017.00291] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 12/06/2017] [Indexed: 01/18/2023] Open
Abstract
Sex differences have been widely observed in clinical presentation, functional outcome and neuroanatomy in individuals with a first-episode of psychosis, and chronic patients suffering from schizophrenia. However, little is known about sex differences in the high-risk stages for psychosis. The present study investigated sex differences in cortical and subcortical neuroanatomy in individuals at clinical high risk (CHR) for psychosis and healthy controls (CTL), and the relationship between anatomy and clinical symptoms in males at CHR. Magnetic resonance images were collected in 26 individuals at CHR (13 men) and 29 CTLs (15 men) to determine total and regional brain volumes and morphology, cortical thickness, and surface area (SA). Clinical symptoms were assessed with the brief psychiatric rating scale. Significant sex-by-diagnosis interactions were observed with opposite directions of effect in male and female CHR subjects relative to their same-sex controls in multiple cortical and subcortical areas. The right postcentral, left superior parietal, inferior parietal supramarginal, and angular gyri [<5% false discovery rate (FDR)] were thicker in male and thinner in female CHR subjects compared with their same-sex CTLs. The same pattern was observed in the right superior parietal gyrus SA at the regional and vertex level. Using a recently developed surface-based morphology pipeline, we observed sex-specific shape differences in the left hippocampus (<5% FDR) and amygdala (<10% FDR). Negative symptom burden was significantly higher in male compared with female CHR subjects (p = 0.04) and was positively associated with areal expansion of the left amygdala in males (<5% FDR). Some limitations of the study include the sample size, and data acquisition at 1.5 T. This study demonstrates neuroanatomical sex differences in CHR subjects, which may be associated with variations in symptomatology in men and women with psychotic symptoms.
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Affiliation(s)
- Elisa Guma
- Integrated Program in Neuroscience, Department of Psychiatry, Douglas Mental Health University Institute, McGill University, Verdun, QC, Canada
| | - Gabriel A Devenyi
- Department of Psychiatry, Cerebral Imaging Center, Douglas Mental Health University Institute, McGill University, Verdun, QC, Canada
| | - Ashok Malla
- Prevention and Early Intervention Program for Psychosis, Department of Psychiatry, Douglas Mental Health University Institute, McGill University, Verdun, QC, Canada
| | - Jai Shah
- Prevention and Early Intervention Program for Psychosis, Department of Psychiatry, Douglas Mental Health University Institute, McGill University, Verdun, QC, Canada
| | - M Mallar Chakravarty
- Integrated Program in Neuroscience, Department of Psychiatry, Douglas Mental Health University Institute, McGill University, Verdun, QC, Canada.,Department of Biological and Biomedical Engineering, Douglas Mental Health University Institute, McGill University, Verdun, QC, Canada
| | - Marita Pruessner
- Prevention and Early Intervention Program for Psychosis, Department of Psychiatry, Douglas Mental Health University Institute, McGill University, Verdun, QC, Canada.,Department of Psychology, University of Konstanz, Konstanz, Germany
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119
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Abstract
INTRODUCTION Sleep and lifestyles interact to allow the appropriate development of cerebral structures, and prevention of mood disorders. But just a hand of articles identified a precise relationship between these two above, and the probability to develop a suicidal behaviour. OBJECTIVE The aim of this study is to explore how the suicidal behaviour is associated in simultaneous with sleep components, psychological stress, depression, anxiety, well-being, addiction, and global health of participants; and if it is also influenced by the sociodemographic profile of each subject. METHODS The present study was led by a questionnaire incorporating McNair test, and an incorporated score to evaluate suicide tendencies. The questionnaire also included socio-demographic items and other questions to exhibit a profile of suicide tendency for each individual. RESULTS Our results showed that the stress levels and well-being are comparable according to gender. Specifically the results showed that lack of sleep combined with a low score to McNair test strongly affects the suicidal tendency, while score of memory and attention decreased. CONCLUSIONS The suicidal behaviour is closely linked with sleep parameters which decreased accordingly, and the family's history of medication and suicidal behaviour.
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Affiliation(s)
- Faustin Armel Etindele Sosso
- Research Centre in Neuropsychology and Cognition, Quebec, Canada.,Department of Biological Sciences, University of Montreal, Quebec, Canada
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120
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Kasmi L, Bonnet D, Montreuil M, Kalfa D, Geronikola N, Bellinger DC, Calderon J. Neuropsychological and Psychiatric Outcomes in Dextro-Transposition of the Great Arteries across the Lifespan: A State-of-the-Art Review. Front Pediatr 2017; 5:59. [PMID: 28393063 PMCID: PMC5364136 DOI: 10.3389/fped.2017.00059] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 03/10/2017] [Indexed: 11/17/2022] Open
Abstract
Advances in prenatal diagnosis, perioperative management, and postoperative care have dramatically increased the population of survivors of neonatal and infant heart surgery. The high survival rate of these patients into adulthood has exposed the alarming prevalence of long-term neuropsychological and psychiatric morbidities. Dextro-transposition of the great arteries (d-TGA) is one of the most extensively studied cyanotic congenital heart defect (CHD) with regard to neurodevelopmental outcomes. Landmark studies have described a common neurodevelopmental and behavioral phenotype associated with d-TGA. Children with d-TGA display impairments in key neurocognitive areas, including visual-spatial and fine motor abilities, executive functioning, processing speed, and social cognition. As they grow older, they may face additional challenges with a worsening of deficits in higher order cognitive skills, problems in psychosocial adjustment and a higher-than-expected rate of psychiatric disorders, such as attention-deficit hyperactivity disorder, depression, and anxiety. The aim of this review is to summarize the available recent data on neuropsychological and psychiatric outcomes in individuals with d-TGA after the arterial switch operation. We present findings within a life-span perspective, with a particular emphasis on the emerging literature on adolescent and young adult outcomes. Finally, we propose avenues for future research in the CHD adult neuropsychology field. Among these avenues, we explore the potential mechanisms by which pediatric neurodevelopmental impairments may have lifelong adverse effects as well as alternative interventions that could optimize outcomes.
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Affiliation(s)
- Leila Kasmi
- Laboratory of Psychopathology and Neuropsychology, Department of Psychology, University Paris 8, Paris Lumières - CNRS , Saint-Denis , France
| | - Damien Bonnet
- Referral Center for Complex Congenital Cardiac Malformations, Department of Congenital and Pediatric Cardiology, Necker Hospital, University Paris Descartes, Sorbonne Paris Cité , Paris , France
| | - Michèle Montreuil
- Laboratory of Psychopathology and Neuropsychology, Department of Psychology, University Paris 8, Paris Lumières - CNRS , Saint-Denis , France
| | - David Kalfa
- Division of Cardiac, Thoracic, and Vascular Surgery, Section of Pediatric Cardiac Surgery, Morgan Stanley Children's Hospital of New York-Presbyterian, Columbia University Irving Medical Center, Columbia University , New York, NY , USA
| | - Nikoletta Geronikola
- Laboratory of Psychopathology and Neuropsychology, Department of Psychology, University Paris 8, Paris Lumières - CNRS , Saint-Denis , France
| | - David C Bellinger
- Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA; Department of Psychiatry, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Johanna Calderon
- Department of Psychiatry, Boston Children's Hospital, Harvard Medical School , Boston, MA , USA
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121
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Sosso FAE. Neurocognitive game between risk factors, sleep and suicidal behaviour. Sleep Sci 2016. [DOI: 10.1016/j.slsci.2016.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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122
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Sakharkar AJ, Vetreno RP, Zhang H, Kokare DM, Crews FT, Pandey SC. A role for histone acetylation mechanisms in adolescent alcohol exposure-induced deficits in hippocampal brain-derived neurotrophic factor expression and neurogenesis markers in adulthood. Brain Struct Funct 2016; 221:4691-4703. [PMID: 26941165 PMCID: PMC5010799 DOI: 10.1007/s00429-016-1196-y] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2015] [Accepted: 01/30/2016] [Indexed: 02/06/2023]
Abstract
Binge drinking during adolescence is a risk factor for neuropsychiatric disorders that can develop later in life. Histone acetylation is an important epigenetic mechanism that contributes to neurodevelopment. We investigated the effects of adolescent intermittent ethanol (AIE) exposure, as opposed to normal saline (AIS) exposure, on histone acetylation-mediated regulation of brain-derived neurotrophic factor (BDNF) expression and developmental stages of neurogenesis (proliferating and immature neurons) in the hippocampus in adulthood. AIE exposure increased whole hippocampal histone deacetylase (HDAC) activity and decreased binding protein of cyclic adenosine monophosphate response element binding protein (CBP) and histone H3-K9 acetylation levels in the CA1, CA2, and CA3 regions of the hippocampus. BDNF protein and exon IV mRNA levels in the CA1 and CA3 regions of the hippocampus of AIE-exposed adult rats were decreased as compared to AIS-exposed adult rats. AIE-induced anxiety-like behaviors and deficits in histone H3 acetylation at BDNF exon IV promoter in the hippocampus during adulthood, which were reversed by treatment with the HDAC inhibitor, trichostatin A (TSA). Similarly, neurogenesis was inhibited by AIE in adulthood as demonstrated by the decrease in Ki-67 and doublecortin (DCX)-positive cells in the dentate gyrus, which was normalized by TSA treatment. These results indicate that AIE exposure increases HDACs and decreases CBP levels that may be associated with a decrease in histone H3 acetylation in the hippocampus. These epigenetic changes potentially decrease BDNF expression and inhibit neurogenesis in the hippocampus that may be involved in AIE-induced behavioral abnormalities, including anxiety, in adulthood.
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Affiliation(s)
- Amul J Sakharkar
- Department of Psychiatry, Center for Alcohol Research in Epigenetics (CARE), University of Illinois at Chicago, 1601 West Taylor Street (m/c 912), Chicago, IL, 60612, USA
- Jesse Brown Veterans Affairs Medical Center, Chicago, IL, 60612, USA
| | - Ryan P Vetreno
- Bowles Center for Alcohol Studies, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Huaibo Zhang
- Department of Psychiatry, Center for Alcohol Research in Epigenetics (CARE), University of Illinois at Chicago, 1601 West Taylor Street (m/c 912), Chicago, IL, 60612, USA
- Jesse Brown Veterans Affairs Medical Center, Chicago, IL, 60612, USA
| | - Dadasaheb M Kokare
- Department of Psychiatry, Center for Alcohol Research in Epigenetics (CARE), University of Illinois at Chicago, 1601 West Taylor Street (m/c 912), Chicago, IL, 60612, USA
| | - Fulton T Crews
- Bowles Center for Alcohol Studies, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Subhash C Pandey
- Department of Psychiatry, Center for Alcohol Research in Epigenetics (CARE), University of Illinois at Chicago, 1601 West Taylor Street (m/c 912), Chicago, IL, 60612, USA.
- Department of Anatomy and Cell Biology, University of Illinois at Chicago, Chicago, IL, 60612, USA.
- Jesse Brown Veterans Affairs Medical Center, Chicago, IL, 60612, USA.
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123
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Gomes FV, Rincón-Cortés M, Grace AA. Adolescence as a period of vulnerability and intervention in schizophrenia: Insights from the MAM model. Neurosci Biobehav Rev 2016; 70:260-270. [PMID: 27235082 PMCID: PMC5074867 DOI: 10.1016/j.neubiorev.2016.05.030] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 05/24/2016] [Accepted: 05/24/2016] [Indexed: 11/30/2022]
Abstract
Adolescence is a time of extensive neuroanatomical, functional and chemical reorganization of the brain, which parallels substantial maturational changes in behavior and cognition. Environmental factors that impinge on the timing of these developmental factors, including stress and drug exposure, increase the risk for psychiatric disorders. Indeed, antecedents to affective and psychotic disorders, which have clinical and pathophysiological overlap, are commonly associated with risk factors during adolescence that predispose to these disorders. In the context of schizophrenia, psychosis typically begins in late adolescence/early adulthood, which has been replicated by animal models. Rats exposed during gestational day (GD) 17 to the mitotoxin methylazoxymethanol acetate (MAM) exhibit behavioral, pharmacological, and anatomical characteristics consistent with an animal model of schizophrenia. Here we provide an overview of adolescent changes within the dopamine system and the PFC and review recent findings regarding the effects of stress and cannabis exposure during the peripubertal period as risk factors for the emergence of schizophrenia-like deficits. Finally, we discuss peripubertal interventions appearing to circumvent the emergence of adult schizophrenia-like deficits.
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Affiliation(s)
- Felipe V Gomes
- Departments of Neuroscience, Psychiatry and Psychology, United States
| | | | - Anthony A Grace
- Departments of Neuroscience, Psychiatry and Psychology, United States.
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124
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Bitanihirwe BKY, Mauney SA, Woo TUW. Weaving a Net of Neurobiological Mechanisms in Schizophrenia and Unraveling the Underlying Pathophysiology. Biol Psychiatry 2016; 80:589-98. [PMID: 27113498 PMCID: PMC5017894 DOI: 10.1016/j.biopsych.2016.03.1047] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Revised: 02/14/2016] [Accepted: 03/03/2016] [Indexed: 12/26/2022]
Abstract
Perineuronal nets (PNNs) are enigmatic structures composed of extracellular matrix molecules that encapsulate the soma, dendrites, and axon segments of neurons in a lattice-like fashion. Although most PNNs condense around parvalbumin-expressing gamma-aminobutyric acidergic interneurons, some glutamatergic pyramidal cells in the brain are also surrounded by PNNs. Experimental findings suggest pivotal roles of PNNs in the regulation of synaptic formation and function. Also, an increasing body of evidence links PNN abnormalities to schizophrenia. The number of PNNs progressively increases during postnatal development until plateauing around the period of late adolescence and early adulthood, which temporally coincides with the age of onset of schizophrenia. Given the established role of PNNs in modulating developmental plasticity, the PNN represents a possible candidate for altering the onset and progression of schizophrenia. Similarly, the reported function of PNNs in regulating the trafficking of glutamate receptors places them in a critical position to modulate synaptic pathology, considered a cardinal feature of schizophrenia. We discuss the physiologic role of PNNs in neural function, synaptic assembly, and plasticity as well as how they interface with circuit/system mechanisms of cognition. An integrated understanding of these neurobiological processes should provide a better basis to elucidate how PNN abnormalities influence brain function and contribute to the pathogenesis of neurodevelopmental disorders such as schizophrenia.
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Affiliation(s)
- Byron K Y Bitanihirwe
- Department of International Health, The Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland
| | - Sarah A Mauney
- Program in Cellular Neuropathology, McLean Hospital, Belmont
| | - Tsung-Ung W Woo
- Program in Cellular Neuropathology, McLean Hospital, Belmont; Department of Psychiatry, Beth Israel Deaconess Medical Center, Boston, Massachusetts; Department of Psychiatry, Harvard Medical School, Boston, Massachusetts.
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125
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Moe AAK, Scott JG, Burne TH, Eyles DW. Neural changes induced by antipsychotic administration in adolescence: A review of studies in laboratory rodents. J Psychopharmacol 2016; 30:771-94. [PMID: 27413140 DOI: 10.1177/0269881116654776] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Adolescence is characterized by major remodelling processes in the brain. Use of antipsychotic drugs (APDs) in adolescents has increased dramatically in the last 20 years; however, our understanding of the neurobiological consequences of APD treatment on the adolescent brain has not kept the same pace and significant concerns have been raised. In this review, we examined currently available preclinical studies of the effects of APDs on the adolescent brain. In animal models of neuropsychiatric disorders, adolescent APD treatment appears to be protective against selected structural, behavioural and neurochemical phenotypes. In "neurodevelopmentally normal" adolescent animals, a range of short- and long-term alterations in behaviour and neurochemistry have been reported. In particular, the adolescent brain appears to be sensitive to long-term locomotor/reward effects of chronic atypical APDs in contrast with the outcomes in adults. Long-lasting changes in dopaminergic, glutamatergic and gamma-amino butyric acid-ergic systems induced by adolescent APD administration have been observed in the nucleus accumbens. A detailed examination of other potential target regions such as striatum, prefrontal cortex and ventral tegmental area is still required. Through identification of specific neural pathways targeted by adolescent APD treatment, future studies will expand the current knowledge on long-term neural outcomes which are of translational value.
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Affiliation(s)
- Aung Aung Kywe Moe
- Queensland Brain Institute, The University of Queensland, St Lucia, QLD, Australia
| | - James G Scott
- Queensland Centre for Mental Health Research, Wacol, QLD, Australia Discipline of Psychiatry, School of Medicine, The University of Queensland Centre for Clinical Research, Herston, QLD, Australia Metro North Mental Health Service, Royal Brisbane and Women's Hospital, Herston, QLD, Australia
| | - Thomas Hj Burne
- Queensland Brain Institute, The University of Queensland, St Lucia, QLD, Australia Queensland Centre for Mental Health Research, Wacol, QLD, Australia
| | - Darryl W Eyles
- Queensland Brain Institute, The University of Queensland, St Lucia, QLD, Australia Queensland Centre for Mental Health Research, Wacol, QLD, Australia
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126
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Abstract
The focus on recent advances in the neurobiology of schizophrenia has pushed aside the psychological understanding of the person with schizophrenia for several decades. However, a useful functional psychology of schizophrenia (in distinction to a psychological approach to symptoms) remains clinically important for several reasons: it is a core part of the bio-psycho-social formulation; it helps us understand and connect with persons with schizophrenia; and it provides a framework by which to organize our treatment efforts (both psychotherapeutic and particularly biological), which can improve adherence and outcomes. A coherent psychological model (the deficit model) based on object relations theory best explains all the biological, psychological, clinical, and sociocultural factors relevant to the understanding and treatment of persons with schizophrenia. A better understanding of a coherent psychology of persons with schizophrenia and provision of psychotherapies improves both the biological and psychotherapeutic treatment of persons with schizophrenia.
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127
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Kyzar EJ, Floreani C, Teppen TL, Pandey SC. Adolescent Alcohol Exposure: Burden of Epigenetic Reprogramming, Synaptic Remodeling, and Adult Psychopathology. Front Neurosci 2016; 10:222. [PMID: 27303256 PMCID: PMC4885838 DOI: 10.3389/fnins.2016.00222] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Accepted: 05/06/2016] [Indexed: 12/22/2022] Open
Abstract
Adolescence represents a crucial phase of synaptic maturation characterized by molecular changes in the developing brain that shape normal behavioral patterns. Epigenetic mechanisms play an important role in these neuromaturation processes. Perturbations of normal epigenetic programming during adolescence by ethanol can disrupt these molecular events, leading to synaptic remodeling and abnormal adult behaviors. Repeated exposure to binge levels of alcohol increases the risk for alcohol use disorder (AUD) and comorbid psychopathology including anxiety in adulthood. Recent studies in the field clearly suggest that adolescent alcohol exposure causes widespread and persistent changes in epigenetic, neurotrophic, and neuroimmune pathways in the brain. These changes are manifested by altered synaptic remodeling and neurogenesis in key brain regions leading to adult psychopathology such as anxiety and alcoholism. This review details the molecular mechanisms underlying adolescent alcohol exposure-induced changes in synaptic plasticity and the development of alcohol addiction-related phenotypes in adulthood.
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Affiliation(s)
- Evan J Kyzar
- Department of Psychiatry, Center for Alcohol Research in Epigenetics, University of Illinois at ChicagoChicago, IL, USA; Jesse Brown Veterans Affairs Medical CenterChicago, IL, USA
| | - Christina Floreani
- Department of Psychiatry, Center for Alcohol Research in Epigenetics, University of Illinois at ChicagoChicago, IL, USA; Jesse Brown Veterans Affairs Medical CenterChicago, IL, USA
| | - Tara L Teppen
- Department of Psychiatry, Center for Alcohol Research in Epigenetics, University of Illinois at ChicagoChicago, IL, USA; Jesse Brown Veterans Affairs Medical CenterChicago, IL, USA
| | - Subhash C Pandey
- Department of Psychiatry, Center for Alcohol Research in Epigenetics, University of Illinois at ChicagoChicago, IL, USA; Jesse Brown Veterans Affairs Medical CenterChicago, IL, USA; Anatomy and Cell Biology, University of Illinois at ChicagoChicago, IL, USA
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128
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O'Neill SM, Curran EA, Dalman C, Kenny LC, Kearney PM, Clarke G, Cryan JF, Dinan TG, Khashan AS. Birth by Caesarean Section and the Risk of Adult Psychosis: A Population-Based Cohort Study. Schizophr Bull 2016; 42:633-41. [PMID: 26615187 PMCID: PMC4838084 DOI: 10.1093/schbul/sbv152] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Despite the biological plausibility of an association between obstetric mode of delivery and psychosis in later life, studies to date have been inconclusive. We assessed the association between mode of delivery and later onset of psychosis in the offspring. A population-based cohort including data from the Swedish National Registers was used. All singleton live births between 1982 and 1995 were identified (n= 1,345,210) and followed-up to diagnosis at age 16 or later. Mode of delivery was categorized as: unassisted vaginal delivery (VD), assisted VD, elective Caesarean section (CS) (before onset of labor), and emergency CS (after onset of labor). Outcomes included any psychosis; nonaffective psychoses (including schizophrenia only) and affective psychoses (including bipolar disorder only and depression with psychosis only). Cox regression analysis was used reporting partially and fully adjusted hazard ratios (HR) with 95% confidence intervals (CI). Sibling-matched Cox regression was performed to adjust for familial confounding factors. In the fully adjusted analyses, elective CS was significantly associated with any psychosis (HR 1.13, 95% CI 1.03, 1.24). Similar findings were found for nonaffective psychoses (HR 1.13, 95% CI 0.99, 1.29) and affective psychoses (HR 1.17, 95% CI 1.05, 1.31) (χ(2)for heterogeneityP= .69). In the sibling-matched Cox regression, this association disappeared (HR 1.03, 95% CI 0.78, 1.37). No association was found between assisted VD or emergency CS and psychosis. This study found that elective CS is associated with an increase in offspring psychosis. However, the association did not persist in the sibling-matched analysis, implying the association is likely due to familial confounding by unmeasured factors such as genetics or environment.
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Affiliation(s)
- Sinéad M O'Neill
- Irish Centre for Fetal and Neonatal Translational Research (INFANT), University College Cork, Cork, Ireland
| | - Eileen A Curran
- Irish Centre for Fetal and Neonatal Translational Research (INFANT), University College Cork, Cork, Ireland
| | - Christina Dalman
- Department of Public Health Sciences, Karolinska Institute, Karolinska, Sweden
| | - Louise C Kenny
- Irish Centre for Fetal and Neonatal Translational Research (INFANT), University College Cork, Cork, Ireland; Department of Obstetrics and Gynaecology, Cork University Maternity Hospital, Cork, Ireland
| | | | - Gerard Clarke
- Laboratory of NeuroGastroenterology, APC Microbiome Institute; Department of Psychiatry
| | - John F Cryan
- APC Microbiome Institute; Department of Anatomy and Neuroscience, University College Cork, Cork, Ireland
| | | | - Ali S Khashan
- Irish Centre for Fetal and Neonatal Translational Research (INFANT), University College Cork, Cork, Ireland; Department of Epidemiology and Public Health;
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129
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Moskow DM, Addington J, Bearden CE, Cadenhead KS, Cornblatt BA, Heinssen R, Mathalon DH, McGlashan TH, Perkins DO, Seidman LJ, Tsuang MT, Cannon TD, Woods SW, Walker EF. The relations of age and pubertal development with cortisol and daily stress in youth at clinical risk for psychosis. Schizophr Res 2016; 172:29-34. [PMID: 26905038 PMCID: PMC4821739 DOI: 10.1016/j.schres.2016.02.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Revised: 01/28/2016] [Accepted: 02/01/2016] [Indexed: 01/01/2023]
Abstract
BACKGROUND Prodromal syndromes often begin in adolescence - a period of neurodevelopmental changes and heightened stress sensitivity. Research has shown elevated stress and cortisol in individuals at clinical high risk (CHR) for psychosis. This cross-sectional study examined relations of age and pubertal status with cortisol and self-reported stress in healthy controls (HCs) and CHR adolescents. It was hypothesized that the relations of age and pubertal stage with cortisol and stress would be more pronounced in CHR youth. METHODS Participants were 93 HCs and 348 CHR adolescents from the North American Prodrome Longitudinal Study (NAPLS). At baseline, measures of stress (Daily Stress Inventory - DSI), Tanner stage (TS), and salivary cortisol were obtained. RESULTS ANCOVA revealed increased DSI scores with age for both groups, and higher DSI scores in CHR adolescents than HCs, with a more pronounced difference for females. Contrary to prediction, with age controlled, HCs showed greater TS-related DSI increases. Analysis of cortisol showed no significant interactions, but a main effect of age and a trend toward higher cortisol in the CHR group. Correlations of cortisol with TS were higher in HC than CHR group. CONCLUSIONS Stress measures increased with age in HC and CHR adolescents, and DSI scores also increased with TS in HCs. The results do not support a more pronounced age or TS increase in stress measures in CHR adolescents, but instead suggest that stress indices tend to be elevated earlier in adolescence in the CHR group. Potential determinants of findings and future directions are discussed.
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Affiliation(s)
| | - Jean Addington
- University of Calgary, 3280 Hospital Drive NW, Calgary, AB T2N 4Z6, Canada.
| | - Carrie E. Bearden
- Univeristy of California, 300 Medical Plaza Suite 2265, Los
Angeles, CA 90095, USA,
| | | | | | - Robert Heinssen
- National Institute of Mental Health, 6001 Executive Boulevard, Bethesda, MD 20893, USA.
| | - Daniel H. Mathalon
- University of California San Francisco, 4150 Clement Street, San
Francisco, CA 94121, USA,
| | | | - Diana O. Perkins
- University of North Carolina, 101 Manning Dr, Chapel Hill, NC
27514, USA,
| | - Larry J. Seidman
- Beth Israel Deaconess Medical Center, Harvard Medical School, 75 Fenwood Road, Boston, MA 02115, USA,
| | - Ming T. Tsuang
- University of California San Diego, 9500 Gilman Drive, La Jolla,
CA 92037, USA,
| | | | - Scott W. Woods
- Yale University, 300 George Street, New Haven, CT 06511, USA,
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130
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Shah JL, Chakravarty MM, Joober R, Lepage M. Dynamic endophenotypes and longitudinal trajectories: capturing changing aspects of development in early psychosis. J Psychiatry Neurosci 2016; 41:148-51. [PMID: 27116900 PMCID: PMC4853205 DOI: 10.1503/jpn.160053] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Affiliation(s)
- Jai L. Shah
- From PEPP-Montréal, Douglas Mental Health University Institute (Shah, Chakravarty, Joober, Lepage); Cerebral Imaging Centre, Douglas Mental Health University Institute (Chakravarty); and the Department of Psychiatry, McGill University (Shah, Chakravarty, Joober, Lepage), Montreal, Que., Canada
| | - M. Mallar Chakravarty
- From PEPP-Montréal, Douglas Mental Health University Institute (Shah, Chakravarty, Joober, Lepage); Cerebral Imaging Centre, Douglas Mental Health University Institute (Chakravarty); and the Department of Psychiatry, McGill University (Shah, Chakravarty, Joober, Lepage), Montreal, Que., Canada
| | - Ridha Joober
- From PEPP-Montréal, Douglas Mental Health University Institute (Shah, Chakravarty, Joober, Lepage); Cerebral Imaging Centre, Douglas Mental Health University Institute (Chakravarty); and the Department of Psychiatry, McGill University (Shah, Chakravarty, Joober, Lepage), Montreal, Que., Canada
| | - Martin Lepage
- From PEPP-Montréal, Douglas Mental Health University Institute (Shah, Chakravarty, Joober, Lepage); Cerebral Imaging Centre, Douglas Mental Health University Institute (Chakravarty); and the Department of Psychiatry, McGill University (Shah, Chakravarty, Joober, Lepage), Montreal, Que., Canada
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131
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The NMDA Receptor and Schizophrenia: From Pathophysiology to Treatment. ADVANCES IN PHARMACOLOGY 2016; 76:351-82. [PMID: 27288082 DOI: 10.1016/bs.apha.2016.01.006] [Citation(s) in RCA: 179] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Schizophrenia is a severe mental illness that affects almost 1% of the population worldwide. Even though the etiology of schizophrenia is uncertain, it is believed to be a neurodevelopmental disorder that results from a combination of environmental insults and genetic vulnerabilities. Over the past 20 years, there has been a confluence of evidence from many research disciplines pointing to alterations in excitatory signaling, particularly involving hypofunction of the N-methyl-d-aspartate receptor (NMDAR), as a key contributor to the schizophrenia disease process. This review describes the structure-function relationship of the NMDAR channel and how the glycine modulatory site acts as an important regulator of its activity. In addition, this review highlights the genetic, pharmacologic, and biochemical evidence supporting the hypothesis that NMDAR hypofunction contributes to the pathophysiology of schizophrenia. Finally, this chapter highlights some of the most recent and promising pharmacological strategies that are designed to either, directly or indirectly, augment NMDAR function in an effort to treat the cognitive and negative symptoms of schizophrenia that are not helped by currently available medications.
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132
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Cohen Kadosh K, Luo Q, de Burca C, Sokunbi MO, Feng J, Linden DEJ, Lau JYF. Using real-time fMRI to influence effective connectivity in the developing emotion regulation network. Neuroimage 2016; 125:616-626. [PMID: 26475487 PMCID: PMC4692450 DOI: 10.1016/j.neuroimage.2015.09.070] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Revised: 09/29/2015] [Accepted: 09/30/2015] [Indexed: 12/19/2022] Open
Abstract
For most people, adolescence is synonymous with emotional turmoil and it has been shown that early difficulties with emotion regulation can lead to persistent problems for some people. This suggests that intervention during development might reduce long-term negative consequences for those individuals. Recent research has highlighted the suitability of real-time fMRI-based neurofeedback (NF) in training emotion regulation (ER) networks in adults. However, its usefulness in directly influencing plasticity in the maturing ER networks remains unclear. Here, we used NF to teach a group of 17 7-16 year-olds to up-regulate the bilateral insula, a key ER region. We found that all participants learned to increase activation during the up-regulation trials in comparison to the down-regulation trials. Importantly, a subsequent Granger causality analysis of Granger information flow within the wider ER network found that during up-regulation trials, bottom-up driven Granger information flow increased from the amygdala to the bilateral insula and from the left insula to the mid-cingulate cortex, supplementary motor area and the inferior parietal lobe. This was reversed during the down-regulation trials, where we observed an increase in top-down driven Granger information flow to the bilateral insula from mid-cingulate cortex, pre-central gyrus and inferior parietal lobule. This suggests that: 1) NF training had a differential effect on up-regulation vs down-regulation network connections, and that 2) our training was not only superficially concentrated on surface effects but also relevant with regards to the underlying neurocognitive bases. Together these findings highlight the feasibility of using NF in children and adolescents and its possible use for shaping key social cognitive networks during development.
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Affiliation(s)
- Kathrin Cohen Kadosh
- Department of Experimental Psychology, University of Oxford, South Parks Road, Oxford, OX1 3UD, UK; Psychology Department, Institute of Psychiatry, King's College London, London SE5 8AF, UK.
| | - Qiang Luo
- School of Life Sciences, Fudan University, Shanghai 200433, PR China; Centre for Computational Systems Biology, Fudan University, Shanghai 200433, PR China
| | - Calem de Burca
- Department of Experimental Psychology, University of Oxford, South Parks Road, Oxford, OX1 3UD, UK
| | - Moses O Sokunbi
- MRC Centre for Neuropsychiatric Genetics and Genomics and National Centre for Mental Health, Institute of Psychological Medicine and Clinical Neurosciences, Cardiff University School of Medicine, Cardiff, CF14 4XN, United Kingdom; Cardiff University Brain Research Imaging Centre, School of Psychology, Cardiff University, Cardiff CF10 3AT, United Kingdom; Cognitive Neuroscience Sector, International School for Advanced Studies (SISSA), 34136 Trieste, Italy
| | - Jianfeng Feng
- School of Life Sciences, Fudan University, Shanghai 200433, PR China; Centre for Computational Systems Biology, Fudan University, Shanghai 200433, PR China; Department of Computer Science, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - David E J Linden
- MRC Centre for Neuropsychiatric Genetics and Genomics and National Centre for Mental Health, Institute of Psychological Medicine and Clinical Neurosciences, Cardiff University School of Medicine, Cardiff, CF14 4XN, United Kingdom; Cardiff University Brain Research Imaging Centre, School of Psychology, Cardiff University, Cardiff CF10 3AT, United Kingdom
| | - Jennifer Y F Lau
- Psychology Department, Institute of Psychiatry, King's College London, London SE5 8AF, UK
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133
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Köbach A, Elbert T. Sensitive Periods for Developing a Robust Trait of Appetitive Aggression. Front Psychiatry 2015; 6:144. [PMID: 26528191 PMCID: PMC4602097 DOI: 10.3389/fpsyt.2015.00144] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 09/22/2015] [Indexed: 01/03/2023] Open
Abstract
Violent behavior can be intrinsically rewarding; especially combatants fighting in current civil wars present with elevated traits of appetitive aggression. The majority of these fighters were recruited as children or adolescents. In the present study, we test whether there is a developmental period where combatants are sensitive for developing a robust trait of appetitive aggression. We investigated 95 combatants in their demobilization process that were recruited at different ages in the Kivu regions of the eastern Democratic Republic of Congo. Using random forest with conditional inference trees, we identified recruitment at the ages from 16 and 17 years as being predictive of the level of appetitive aggression; the number of lifetime, perpetrated acts was the most important predictor. We conclude that high levels of appetitive aggression develop in ex-combatants, especially in those recruited during their middle to late teenage, which is a developmental period marked by a natural inclination to exercise physical force. Consequently, ex-combatants may remain vulnerable for aggressive behavior patterns and re-recruitment unless they are provided alternative strategies for dealing with their aggression.
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Affiliation(s)
- Anke Köbach
- Clinical Psychology and Neuropsychology, University of Konstanz, Konstanz, Germany
- vivo international, Konstanz, Germany
| | - Thomas Elbert
- Clinical Psychology and Neuropsychology, University of Konstanz, Konstanz, Germany
- vivo international, Konstanz, Germany
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134
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French L, Gray C, Leonard G, Perron M, Pike GB, Richer L, Séguin JR, Veillette S, Evans CJ, Artiges E, Banaschewski T, Bokde AWL, Bromberg U, Bruehl R, Buchel C, Cattrell A, Conrod PJ, Flor H, Frouin V, Gallinat J, Garavan H, Gowland P, Heinz A, Lemaitre H, Martinot JL, Nees F, Orfanos DP, Pangelinan MM, Poustka L, Rietschel M, Smolka MN, Walter H, Whelan R, Timpson NJ, Schumann G, Smith GD, Pausova Z, Paus T. Early Cannabis Use, Polygenic Risk Score for Schizophrenia and Brain Maturation in Adolescence. JAMA Psychiatry 2015; 72:1002-11. [PMID: 26308966 PMCID: PMC5075969 DOI: 10.1001/jamapsychiatry.2015.1131] [Citation(s) in RCA: 123] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
IMPORTANCE Cannabis use during adolescence is known to increase the risk for schizophrenia in men. Sex differences in the dynamics of brain maturation during adolescence may be of particular importance with regard to vulnerability of the male brain to cannabis exposure. OBJECTIVE To evaluate whether the association between cannabis use and cortical maturation in adolescents is moderated by a polygenic risk score for schizophrenia. DESIGN, SETTING, AND PARTICIPANTS Observation of 3 population-based samples included initial analysis in 1024 adolescents of both sexes from the Canadian Saguenay Youth Study (SYS) and follow-up in 426 adolescents of both sexes from the IMAGEN Study from 8 European cities and 504 male youth from the Avon Longitudinal Study of Parents and Children (ALSPAC) based in England. A total of 1577 participants (aged 12-21 years; 899 [57.0%] male) had (1) information about cannabis use; (2) imaging studies of the brain; and (3) a polygenic risk score for schizophrenia across 108 genetic loci identified by the Psychiatric Genomics Consortium. Data analysis was performed from March 1 through December 31, 2014. MAIN OUTCOMES AND MEASURES Cortical thickness derived from T1-weighted magnetic resonance images. Linear regression tests were used to assess the relationships between cannabis use, cortical thickness, and risk score. RESULTS Across the 3 samples of 1574 participants, a negative association was observed between cannabis use in early adolescence and cortical thickness in male participants with a high polygenic risk score. This observation was not the case for low-risk male participants or for the low- or high-risk female participants. Thus, in SYS male participants, cannabis use interacted with risk score vis-à-vis cortical thickness (P = .009); higher scores were associated with lower thickness only in males who used cannabis. Similarly, in the IMAGEN male participants, cannabis use interacted with increased risk score vis-à-vis a change in decreasing cortical thickness from 14.5 to 18.5 years of age (t137 = -2.36; P = .02). Finally, in the ALSPAC high-risk group of male participants, those who used cannabis most frequently (≥61 occasions) had lower cortical thickness than those who never used cannabis (difference in cortical thickness, 0.07 [95% CI, 0.01-0.12]; P = .02) and those with light use (<5 occasions) (difference in cortical thickness, 0.11 [95% CI, 0.03-0.18]; P = .004). CONCLUSIONS AND RELEVANCE Cannabis use in early adolescence moderates the association between the genetic risk for schizophrenia and cortical maturation among male individuals. This finding implicates processes underlying cortical maturation in mediating the link between cannabis use and liability to schizophrenia.
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Affiliation(s)
- Leon French
- Rotman Research Institute, Baycrest, Toronto, Ontario, Canada
| | - Courtney Gray
- Rotman Research Institute, Baycrest, Toronto, Ontario, Canada
| | - Gabriel Leonard
- Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada
| | - Michel Perron
- Groupe d'Étude des Conditions de vie et des Besoins de la Population, Cégep de Jonquiere, Jonquiere, Saguenay, Quebec, Canada 4Department of Human Sciences, University of Quebec in Chicoutimi, Chicoutimi, Quebec, Canada
| | - G Bruce Pike
- Department of Radiology, University of Calgary, Calgary, Alberta, Canada6Department of Clinical Neuroscience, University of Calgary, Calgary, Alberta, Canada
| | - Louis Richer
- Department of Health Sciences, University of Quebec in Chicoutimi, Chicoutimi, Quebec, Canada
| | - Jean R Séguin
- Department of Psychiatry and Centre de Recherche du Centre Hospitalier Universitaire Ste-Justine, University de Montréal, Montreal, Quebec, Canada
| | - Suzanne Veillette
- Groupe d'Étude des Conditions de vie et des Besoins de la Population, Cégep de Jonquiere, Jonquiere, Saguenay, Quebec, Canada 4Department of Human Sciences, University of Quebec in Chicoutimi, Chicoutimi, Quebec, Canada
| | - C John Evans
- School of Psychology, Cardiff University, Cardiff, Wales
| | - Eric Artiges
- Institut National de la Santé et de la Recherche Medicale (INSERM), Unité Mixte de Recherche (UMR) 1000, Research Unit Imaging and Psychiatry, Commissariat à l'Énergie Atomique (CEA), Direction des Sciences du Vivant, Institut d'Imagerie Biomédicale, Serv
| | - Tobias Banaschewski
- Department of Child and Adolescent Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Arun W L Bokde
- Discipline of Psychiatry, School of Medicine and Trinity College Institute of Neurosciences, Trinity College, Dublin, Ireland
| | - Uli Bromberg
- Institut für Systemische Neurowissenschaften, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | | | - Christian Buchel
- Institut für Systemische Neurowissenschaften, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Anna Cattrell
- Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, England20Medical Research Council-Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London
| | - Patricia J Conrod
- Department of Psychiatry and Centre de Recherche du Centre Hospitalier Universitaire Ste-Justine, University de Montréal, Montreal, Quebec, Canada19Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, England
| | - Herta Flor
- Department of Cognitive and Clinical Neuroscience, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | | | - Jurgen Gallinat
- Institut für Systemische Neurowissenschaften, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Hugh Garavan
- Department of Psychiatry, University of Vermont, Burlington24Department of Psychology, University of Vermont, Burlington
| | - Penny Gowland
- School of Physics and Astronomy, University of Nottingham, Nottingham, England
| | - Andreas Heinz
- Department of Psychiatry and Psychotherapy, Campus Charité Mitte, Charité, Universitätsmedizin Berlin, Berlin, Germany
| | - Herve Lemaitre
- Institut National de la Santé et de la Recherche Medicale (INSERM), Unité Mixte de Recherche (UMR) 1000, Research Unit Imaging and Psychiatry, Commissariat à l'Énergie Atomique (CEA), Direction des Sciences du Vivant, Institut d'Imagerie Biomédicale, Serv
| | - Jean-Luc Martinot
- Institut National de la Santé et de la Recherche Medicale (INSERM), Unité Mixte de Recherche (UMR) 1000, Research Unit Imaging and Psychiatry, Commissariat à l'Énergie Atomique (CEA), Direction des Sciences du Vivant, Institut d'Imagerie Biomédicale, Serv
| | - Frauke Nees
- Department of Cognitive and Clinical Neuroscience, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | | | | | - Luise Poustka
- Department of Child and Adolescent Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Marcella Rietschel
- Department of Cognitive and Clinical Neuroscience, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Michael N Smolka
- Department of Psychiatry and Neuroimaging Center, Technische Universität Dresden, Dresden, Germany
| | - Henrik Walter
- Department of Psychiatry and Psychotherapy, Campus Charité Mitte, Charité, Universitätsmedizin Berlin, Berlin, Germany
| | - Robert Whelan
- Department of Psychology, University College Dublin, Dublin, Ireland
| | - Nic J Timpson
- Medical Research Council Integrative Epidemiology Unit, University of Bristol, Bristol, England
| | - Gunter Schumann
- Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, England20Medical Research Council-Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London
| | - George Davey Smith
- Medical Research Council Integrative Epidemiology Unit, University of Bristol, Bristol, England
| | - Zdenka Pausova
- Department of Physiology and Experimental Medicine, Hospital for Sick Children, University of Toronto, Ontario, Canada31Department of Physiology, University of Toronto, Ontario, Canada32Department of Nutritional Sciences, University of Toronto, Ontario, C
| | - Tomáš Paus
- Rotman Research Institute, Baycrest, Toronto, Ontario, Canada33Department of Psychology, University of Toronto, Ontario, Canada34Department of Psychiatry, University of Toronto, Ontario, Canada35Child Mind Institute, New York, New York
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135
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Liu CH, Keshavan MS, Tronick E, Seidman LJ. Perinatal Risks and Childhood Premorbid Indicators of Later Psychosis: Next Steps for Early Psychosocial Interventions. Schizophr Bull 2015; 41:801-16. [PMID: 25904724 PMCID: PMC4466191 DOI: 10.1093/schbul/sbv047] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Schizophrenia and affective psychoses are debilitating disorders that together affect 2%-3% of the adult population. Approximately 50%-70% of the offspring of parents with schizophrenia manifest a range of observable difficulties including socioemotional, cognitive, neuromotor, speech-language problems, and psychopathology, and roughly 10% will develop psychosis. Despite the voluminous work on premorbid vulnerabilities to psychosis, especially on schizophrenia, the work on premorbid intervention approaches is scarce. While later interventions during the clinical high-risk (CHR) phase of psychosis, characterized primarily by attenuated positive symptoms, are promising, the CHR period is a relatively late phase of developmental derailment. This article reviews and proposes potential targets for psychosocial interventions during the premorbid period, complementing biological interventions described by others in this Special Theme issue. Beginning with pregnancy, parents with psychoses may benefit from enhanced prenatal care, social support, parenting skills, reduction of symptoms, and programs that are family-centered. For children at risk, we propose preemptive early intervention and cognitive remediation. Empirical research is needed to evaluate these interventions for parents and determine whether interventions for parents and children positively influence the developmental course of the offspring.
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Affiliation(s)
- Cindy H Liu
- Department of Psychiatry, Harvard Medical School, Massachusetts Mental Health Center Division of Public Psychiatry, Beth Israel Deaconess Medical Center, Boston, MA; Department of Psychology, University of Massachusetts, Boston, MA;
| | - Matcheri S Keshavan
- Department of Psychiatry, Harvard Medical School, Massachusetts Mental Health Center Division of Public Psychiatry, Beth Israel Deaconess Medical Center, Boston, MA
| | - Ed Tronick
- Department of Psychology, University of Massachusetts, Boston, MA; Department of Newborn Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Larry J Seidman
- Department of Psychiatry, Harvard Medical School, Massachusetts Mental Health Center Division of Public Psychiatry, Beth Israel Deaconess Medical Center, Boston, MA; Department of Psychiatry, Harvard Medical School, Massachusetts General Hospital, Boston, MA
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136
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Tzanoulinou S, Sandi C. The Programming of the Social Brain by Stress During Childhood and Adolescence: From Rodents to Humans. Curr Top Behav Neurosci 2015; 30:411-429. [PMID: 26728172 DOI: 10.1007/7854_2015_430] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
The quality and quantity of social experience is fundamental to an individual's health and well-being. Early life stress is known to be an important factor in the programming of the social brain that exerts detrimental effects on social behaviors. The peri-adolescent period, comprising late childhood and adolescence, represents a critical developmental window with regard to the programming effects of stress on the social brain. Here, we discuss social behavior and the physiological and neurobiological consequences of stress during peri-adolescence in the context of rodent paradigms that model human adversity, including social neglect and isolation, social abuse, and exposure to fearful experiences. Furthermore, we discuss peri-adolescent stress as a potent component that influences the social behaviors of individuals in close contact with stressed individuals and that can also influence future generations. We also discuss the temporal dynamics programmed by stress on the social brain and debate whether social behavior alterations are adaptive or maladaptive. By revising the existing literature and defining open questions, we aim to expand the framework in which interactions among peri-adolescent stress, the social brain, and behavior can be better conceptualized.
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Affiliation(s)
- Stamatina Tzanoulinou
- Department of Fundamental Neurosciences, University of Lausanne, Rue Du Bugnon 9, CH-1005, Lausanne, Switzerland
| | - Carmen Sandi
- Brain Mind Institute, School of Life Sciences, Ecole Polytechnique Federale de Lausanne (EPFL), CH-1050, Lausanne, Switzerland.
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McGorry PD, Goldstone SD, Parker AG, Rickwood DJ, Hickie IB. Cultures for mental health care of young people: an Australian blueprint for reform. Lancet Psychiatry 2014; 1:559-68. [PMID: 26361315 DOI: 10.1016/s2215-0366(14)00082-0] [Citation(s) in RCA: 133] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Accepted: 10/06/2014] [Indexed: 11/30/2022]
Abstract
Mental ill health is now the most important health issue facing young people worldwide. It is the leading cause of disability in people aged 10-24 years, contributing 45% of the overall burden of disease in this age group. Despite their manifest need, young people have the lowest rates of access to mental health care, largely as a result of poor awareness and help-seeking, structural and cultural flaws within the existing care systems, and the failure of society to recognise the importance of this issue and invest in youth mental health. We outline the case for a specific youth mental health stream and describe the innovative service reforms in youth mental health in Australia, using them as an example of the processes that can guide the development and implementation of such a service stream. Early intervention with focus on the developmental period of greatest need and capacity to benefit, emerging adulthood, has the potential to greatly improve the mental health, wellbeing, productivity, and fulfilment of young people, and our wider society.
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Affiliation(s)
- Patrick D McGorry
- Orygen Youth Health Research Centre, Centre for Youth Mental Health, Department of Psychiatry, University of Melbourne, Melbourne, VIC, Australia.
| | - Sherilyn D Goldstone
- Orygen Youth Health Research Centre, Centre for Youth Mental Health, Department of Psychiatry, University of Melbourne, Melbourne, VIC, Australia
| | - Alexandra G Parker
- Orygen Youth Health Research Centre, Centre for Youth Mental Health, Department of Psychiatry, University of Melbourne, Melbourne, VIC, Australia; Headspace National Youth Mental Health Foundation, Melbourne, VIC, Australia
| | - Debra J Rickwood
- Headspace National Youth Mental Health Foundation, Melbourne, VIC, Australia; Faculty of Health, University of Canberra, ACT, Australia
| | - Ian B Hickie
- Brain and Mind Research Centre, University of Sydney, NSW, Australia
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