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Edwards AC, Abrahamsson L, Crump C, Sundquist J, Sundquist K, Kendler KS. Alcohol use disorder and risk of specific methods of suicide death in a national cohort. Acta Psychiatr Scand 2024; 149:479-490. [PMID: 38556255 PMCID: PMC11065572 DOI: 10.1111/acps.13683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 03/13/2024] [Accepted: 03/17/2024] [Indexed: 04/02/2024]
Abstract
INTRODUCTION Alcohol use disorder (AUD) is among the strongest correlates of suicide death, but it is unclear whether AUD status is differentially associated with risk of suicide by particular methods. METHODS The authors used competing risks models to evaluate the association between AUD status and risk of suicide by poisoning, suffocation, drowning, firearm, instruments, jumping, or other means in a large Swedish cohort born 1932-1995 (total N = 6,581,827; 48.8% female). Data were derived from Swedish national registers, including the Cause of Death Register and a range of medical registers. RESULTS After adjusting for sociodemographic factors and familial liability to suicidal behavior, AUD was positively associated with risk of suicide for each method evaluated (cumulative incidence differences: 0.006-1.040 for females, 0.046-0.680 for males), except the association with firearm suicide in females. AUD was most strongly associated with risk of suicide by poisoning. Sex differences in the effects of AUD and family liability were observed for some, but not all, methods. Furthermore, high familial liability for suicidal behavior exacerbated AUD's impact on risk for suicide by poisoning (both sexes) and suffocation and jumping (males only), while the inverse interaction was observed for firearm suicide (males only). CONCLUSIONS AUD increases risk of suicide by all methods examined and is particularly potent with respect to risk of suicide by poisoning. Differences in risk related to sex and familial liability to suicidal behavior underscore AUD's nuanced role in suicide risk. Future research should investigate targeted means restriction effectiveness among persons with AUD.
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Affiliation(s)
- Alexis C. Edwards
- Virginia Institute for Psychiatric and Behavioral Genetics, Department of Psychiatry, Virginia Commonwealth University, Richmond, VA, US
| | - Linda Abrahamsson
- Center for Primary Health Care Research, Lund University, Malmö, Sweden
| | - Casey Crump
- Departments of Family and Community Medicine and of Epidemiology, Human Genetics and Environmental Sciences, The University of Texas Health Science Center, Houston, TX, US
| | - Jan Sundquist
- Center for Primary Health Care Research, Lund University, Malmö, Sweden
| | | | - Kenneth S. Kendler
- Virginia Institute for Psychiatric and Behavioral Genetics, Department of Psychiatry, Virginia Commonwealth University, Richmond, VA, US
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Karjalainen E, Niemelä M, Hakko H, Wahlberg KE, Räsänen S. The Finnish Adoptive Family Study of Schizophrenia: differences in somatic diseases and conditions between adoptees with high or low genetic risk for schizophrenia spectrum disorders. Nord J Psychiatry 2024; 78:312-318. [PMID: 38456792 DOI: 10.1080/08039488.2024.2322495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 02/19/2024] [Indexed: 03/09/2024]
Abstract
BACKGROUND AND AIMS There is some evidence that offspring of patients with schizophrenia have higher somatic morbidity, which is thought to be partially due to genetic links between somatic disorders and schizophrenia. This study explored differences in somatic diseases and conditions of adoptees with high genetic risk (HR) or low genetic risk (LR) for schizophrenia spectrum disorders. MATERIAL AND METHODS The study is part of the Finnish Adoptive Family Study of Schizophrenia. The adoptive research design used made it possible to examine how the somatic health of adoptees raised in similar adoptive families, is affected by their genetic susceptibility to schizophrenia. The study sample consisted of 373 adoptees, of whom 190 had HR and 183 had LR for schizophrenia spectrum disorders. Data on somatic morbidity were gathered from the hospital records and from the national registers of the Care Register of Health Care and the Social Insurance Institution. RESULTS The only statistically significant difference found was in genitourinary diseases, the likelihood being twofold higher in HR adoptees compared to LR adoptees (16.8% vs. 8.2%; adj. OR = 2.13, 95% CI 1.06-4.25, p = .033). Adoptees who were female and aged over 40 had a higher prevalence of genitourinary illnesses than non-adoptees. CONCLUSION The significant prevalence of genitourinary diseases in adoptees at risk for schizophrenia spectrum disorders suggests that some specific somatic diseases and schizophrenia may have a shared hereditary etiology. More research is required for specific somatic diseases in study populations that can differentiate between the effects of genetic and environmental factors.
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Affiliation(s)
- Emma Karjalainen
- Research Unit of Clinical Medicine, Psychiatry, University of Oulu, Oulu, Finland
| | - Mika Niemelä
- Research Unit of Clinical Medicine, Psychiatry, University of Oulu, Oulu, Finland
- Research Unit of Population Health, University of Oulu, Oulu, Finland
| | - Helinä Hakko
- Research Unit of Population Health, University of Oulu, Oulu, Finland
- Department of Psychiatry, Oulu University Hospital, Oulu, Finland
| | - Karl-Erik Wahlberg
- Research Unit of Clinical Medicine, Psychiatry, University of Oulu, Oulu, Finland
| | - Sami Räsänen
- Research Unit of Clinical Medicine, Psychiatry, University of Oulu, Oulu, Finland
- Department of Psychiatry, Oulu University Hospital, Oulu, Finland
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Tripoli G, Quattrone D, Ferraro L, Gayer-Anderson C, La Cascia C, La Barbera D, Sartorio C, Seminerio F, Rodriguez V, Tarricone I, Berardi D, Jamain S, Arango C, Tortelli A, Llorca PM, de Haan L, Velthorst E, Bobes J, Bernardo M, Sanjuán J, Luis Santos J, Arrojo M, Marta Del-Ben C, Rossi Menezes P, van der Ven E, Jones PB, Jongsma HE, Kirkbride JB, Tosato S, Lasalvia A, Richards A, O’Donovan M, Rutten BPF, van Os J, Morgan C, Sham PC, Di Forti M, Murray RM, Murray GK. Facial Emotion Recognition in Psychosis and Associations With Polygenic Risk for Schizophrenia: Findings From the Multi-Center EU-GEI Case-Control Study. Schizophr Bull 2022; 48:1104-1114. [PMID: 35325253 PMCID: PMC9434422 DOI: 10.1093/schbul/sbac022] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND AND HYPOTHESIS Facial Emotion Recognition is a key domain of social cognition associated with psychotic disorders as a candidate intermediate phenotype. In this study, we set out to investigate global and specific facial emotion recognition deficits in first-episode psychosis, and whether polygenic liability to psychotic disorders is associated with facial emotion recognition. STUDY DESIGN 828 First Episode Psychosis (FEP) patients and 1308 population-based controls completed assessments of the Degraded Facial Affect Recognition Task (DFAR) and a subsample of 524 FEP and 899 controls provided blood or saliva samples from which we extracted DNA, performed genotyping and computed polygenic risk scores for schizophrenia (SZ), bipolar disorder (BD), and major depressive disorder (MD). STUDY RESULTS A worse ability to globally recognize facial emotion expressions was found in patients compared with controls [B= -1.5 (0.6), 95% CI -2.7 to -0.3], with evidence for stronger effects on negative emotions (fear [B = -3.3 (1.1), 95% CI -5.3 to -1.2] and anger [B = -2.3 (1.1), 95% CI -4.6 to -0.1]) than on happiness [B = 0.3 (0.7), 95% CI -1 to 1.7]. Pooling all participants, and controlling for confounds including case/control status, facial anger recognition was associated significantly with Schizophrenia Polygenic Risk Score (SZ PRS) [B = -3.5 (1.7), 95% CI -6.9 to -0.2]. CONCLUSIONS Psychosis is associated with impaired recognition of fear and anger, and higher SZ PRS is associated with worse facial anger recognition. Our findings provide evidence that facial emotion recognition of anger might play a role as an intermediate phenotype for psychosis.
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Affiliation(s)
- Giada Tripoli
- To whom correspondence should be addressed; Department of Biomedicine, Neuroscience, and Advanced Diagnostics, University of Palermo, Via G. La Loggia 1, 90129 Palermo, Italy, tel: +39(0)916555641, e-mail:
| | - Diego Quattrone
- Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK,National Institute for Health Research (NIHR) Maudsley Biomedical Research Centre, South London and Maudsley NHS Foundation Trust, King’s College London, London, UK,Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany and National Institute for Health Research (NIHR) Mental Health Biomedical Research Centre at South London and Maudsley NHS Foundation Trust and King’s College London, UK
| | - Laura Ferraro
- Department of Biomedicine, Neuroscience, and Advanced Diagnostics, University of Palermo, Palermo, Italy
| | - Charlotte Gayer-Anderson
- Department of Health Service and Population Research, Institute of Psychiatry, King’s College London, London, UK
| | - Caterina La Cascia
- Department of Biomedicine, Neuroscience, and Advanced Diagnostics, University of Palermo, Palermo, Italy
| | - Daniele La Barbera
- Department of Biomedicine, Neuroscience, and Advanced Diagnostics, University of Palermo, Palermo, Italy
| | - Crocettarachele Sartorio
- Department of Biomedicine, Neuroscience, and Advanced Diagnostics, University of Palermo, Palermo, Italy
| | - Fabio Seminerio
- Department of Biomedicine, Neuroscience, and Advanced Diagnostics, University of Palermo, Palermo, Italy
| | - Victoria Rodriguez
- Department of Psychosis Studies, Institute of Psychiatry, Psychology, and Neuroscience, King’s College London, London, UK
| | - Ilaria Tarricone
- Department of Medical and Surgical Science, Psychiatry Unit, Alma Mater Studiorum Università di Bologna, Bologna, Italy
| | - Domenico Berardi
- Department of Biomedical and NeuroMotor Sciences, Psychiatry Unit, Alma Mater Studiorum Università di Bologna, Bologna, Italy
| | - Stéphane Jamain
- Institut National de la Santé et de la Recherche Médicale, Faculté de Médecine, Université Paris-Est, Creteil, France
| | - Celso Arango
- Department of Child and Adolescent Psychiatry, Institute of Psychiatry and Mental Health. Hospital General Universitario Gregorio Marañón, School of Medicine, Universidad Complutense, IiSGM, CIBERSAM, Madrid, Spain
| | | | | | - Lieuwe de Haan
- Department of Psychiatry, Early Psychosis Section, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Eva Velthorst
- Department of Psychiatry, Early Psychosis Section, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands,Department of Psychiatry, Icahn School of Medicine at Mount Sinai, NY
| | - Julio Bobes
- Department of Medicine, Psychiatry Area, School of Medicine, Universidad de Oviedo, Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Oviedo, Spain
| | - Miquel Bernardo
- Barcelona Clinic Schizophrenia Unit, Neuroscience Institute, Hospital clinic, Department of Medicine, University of Barcelona, IDIBAPS, CIBERSAM, Barcelona, Spain
| | - Julio Sanjuán
- Department of Psychiatry, School of Medicine, Universidad de Valencia, Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Valencia, Spain
| | - Jose Luis Santos
- Department of Psychiatry, Servicio de Psiquiatría Hospital “Virgen de la Luz”, Cuenca, Spain
| | - Manuel Arrojo
- Department of Psychiatry, Psychiatric Genetic Group, Instituto de Investigación Sanitaria de Santiago de Compostela, Complejo Hospitalario Universitario de Santiago de Compostela, Spain
| | - Cristina Marta Del-Ben
- Division of Psychiatry, Department of Neuroscience and Behaviour, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Paulo Rossi Menezes
- Department of Preventive Medicine, Faculdade de Medicina, Universidade of São Paulo, São Paulo, Brazil
| | - Els van der Ven
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, South Limburg Mental Health Research and Teaching Network, Maastricht University Medical Centre, Maastricht, The Netherlands,Vrije Universiteit Amsterdam, Department of Clinical, Neuro- and Developmental Psychology
| | - Peter B Jones
- Department of Psychiatry, University of Cambridge, Cambridge, UK,CAMEO Early Intervention Service, Cambridgeshire & Peterborough NHS Foundation Trust, Cambridge, UK
| | - Hannah E Jongsma
- Psylife Group, Division of Psychiatry, University College London, London, UK
| | - James B Kirkbride
- Psylife Group, Division of Psychiatry, University College London, London, UK
| | - Sarah Tosato
- Section of Psychiatry, Department of Neuroscience, Biomedicine and Movement, University of Verona, Verona, Italy
| | - Antonio Lasalvia
- Section of Psychiatry, Azienda Ospedaliera Universitaria Integrata di Verona, Verona, Italy
| | - Alex Richards
- Division of Psychological Medicine and Clinical Neurosciences, MRC Centre for Neuropsychiatric Genetics and Genomics, Cardiff University, Cardiff, UK
| | - Michael O’Donovan
- Division of Psychological Medicine and Clinical Neurosciences, MRC Centre for Neuropsychiatric Genetics and Genomics, Cardiff University, Cardiff, UK
| | - Bart P F Rutten
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, South Limburg Mental Health Research and Teaching Network, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Jim van Os
- Department of Biomedicine, Neuroscience, and Advanced Diagnostics, University of Palermo, Palermo, Italy,Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, South Limburg Mental Health Research and Teaching Network, Maastricht University Medical Centre, Maastricht, The Netherlands,Department Psychiatry, Brain Centre Rudolf Magnus, Utrecht University Medical Centre, Utrecht, The Netherlands
| | - Craig Morgan
- Department of Health Service and Population Research, Institute of Psychiatry, King’s College London, London, UK
| | - Pak C Sham
- Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK,Centre for Genomic Sciences, Li KaShing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Marta Di Forti
- Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK,National Institute for Health Research (NIHR) Maudsley Biomedical Research Centre, South London and Maudsley NHS Foundation Trust, King’s College London, London, UK
| | - Robin M Murray
- Department of Psychosis Studies, Institute of Psychiatry, Psychology, and Neuroscience, King’s College London, London, UK
| | - Graham K Murray
- Department of Psychiatry, University of Cambridge, Cambridge, UK,CAMEO Early Intervention Service, Cambridgeshire & Peterborough NHS Foundation Trust, Cambridge, UK,Institute for Molecular Bioscience, University of Queensland, Australia
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Lee J, Yoon YB, Cho KIK, Seo S, Lee JS, Jeong JM, Kim E, Kim M, Lee TY, Kwon JS. In vivo gamma-aminobutyric acid-A/benzodiazepine receptor availability and genetic liability in asymptomatic individuals with high genetic loading of schizophrenia: A [11C]flumazenil positron emission tomography study. Hum Psychopharmacol 2021; 36:e2766. [PMID: 33184922 DOI: 10.1002/hup.2766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Revised: 10/18/2020] [Accepted: 10/29/2020] [Indexed: 11/09/2022]
Abstract
OBJECTIVES Whilst reduced signalling and gene expression related to gamma-aminobutyric acid (GABA) play a role in the presumed pathophysiology of schizophrenia, its origin is unclear. Studying asymptomatic individuals with high genetic liability to schizophrenia (AIs) would provide insights. Therefore, this study aimed to investigate the role of genetic liability in GABAergic dysfunction of schizophrenia by exploring in vivo GABA-A/benzodiazepine receptor (GABAR) availability in AIs. METHODS A total of 10 AIs with multiple relatives diagnosed as schizophrenia and 11 healthy controls underwent [11C]flumazenil positron emission tomography and neurocognitive function tests. RESULTS There was no significant difference in [11C]flumazenil availability based on the groups. GABAR availability in caudate nuclei had positive correlations with genetic liability of AIs. GABAR availability in caudate nuclei and verbal memory measures of AIs revealed positive correlations. Only the correlation between right caudate and short-term verbal memory survived multiple-comparison correction (p = 0.030). CONCLUSIONS This study, for the first time, reports correlations between the genetic liability of schizophrenia and GABAR availability. Correlations between [11C]flumazenil binding in caudate of individuals with high genetic liability to schizophrenia suggests that the GABAergic dysfunction may arise from shared genetic factors and also that it may be responsible for cognitive impairment of AIs.
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Affiliation(s)
- Junhee Lee
- Department of Psychiatry, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Youngwoo Bryan Yoon
- Department of Psychiatry, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Kang Ik Kevin Cho
- Psychiatry Neuroimaging Laboratory, Harvard Medical School, Boston, Massachusetts, USA
| | - Seongho Seo
- Department of Neuroscience, Gachon University College of Medicine, Incheon, Republic of Korea
| | - Jae Sung Lee
- Department of Nuclear Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jae Min Jeong
- Department of Nuclear Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Euitae Kim
- Department of Psychiatry, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Minah Kim
- Department of Psychiatry, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Tae Young Lee
- Department of Psychiatry, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jun Soo Kwon
- Department of Psychiatry, Seoul National University College of Medicine, Seoul, Republic of Korea.,Department of Brain and Cognitive Sciences, Seoul National University College of Natural Sciences, Seoul, Republic of Korea.,Institute of Human Behavioral Medicine, SNU-MRC, Seoul, Republic of Korea
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Quarato M, De Maria L, Caputi A, Cavone D, Cannone ESS, Mansi F, Gatti MF, Vimercati L. A case report of idiopathic environmental intolerance: A controversial and current issue. Clin Case Rep 2020; 8:79-85. [PMID: 31998492 PMCID: PMC6982481 DOI: 10.1002/ccr3.2535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 10/21/2019] [Indexed: 11/13/2022] Open
Abstract
In this case of idiopathic environmental intolerance, a little known disease characterized by many symptoms of irritation due to exposure to several toxic compounds, genetic analysis could be helpful in case of differential diagnosis issue.
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Affiliation(s)
- Marco Quarato
- Interdisciplinary Department of MedicineOccupational Medicine “B. Ramazzini”University of Bari Medical SchoolBariItaly
| | - Luigi De Maria
- Interdisciplinary Department of MedicineOccupational Medicine “B. Ramazzini”University of Bari Medical SchoolBariItaly
| | - Antonio Caputi
- Interdisciplinary Department of MedicineOccupational Medicine “B. Ramazzini”University of Bari Medical SchoolBariItaly
| | - Domenica Cavone
- Interdisciplinary Department of MedicineOccupational Medicine “B. Ramazzini”University of Bari Medical SchoolBariItaly
| | - Enza Sabrina Silvana Cannone
- Interdisciplinary Department of MedicineOccupational Medicine “B. Ramazzini”University of Bari Medical SchoolBariItaly
| | - Francesca Mansi
- Interdisciplinary Department of MedicineOccupational Medicine “B. Ramazzini”University of Bari Medical SchoolBariItaly
| | - Maria Franca Gatti
- Interdisciplinary Department of MedicineOccupational Medicine “B. Ramazzini”University of Bari Medical SchoolBariItaly
| | - Luigi Vimercati
- Interdisciplinary Department of MedicineOccupational Medicine “B. Ramazzini”University of Bari Medical SchoolBariItaly
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Morgan VA, Di Prinzio P, Valuri G, Croft M, McNeil T, Jablensky A. Are familial liability for schizophrenia and obstetric complications independently associated with risk of psychotic illness, after adjusting for other environmental stressors in childhood? Aust N Z J Psychiatry 2019; 53:1105-1115. [PMID: 31339337 DOI: 10.1177/0004867419864427] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVE The interplay between genetic and environmental factors on risk for psychotic illness remains poorly understood. The aim of this study was to estimate independent and combined effects of familial liability for schizophrenia and exposure to obstetric complications on risk for developing psychotic illness, covarying with exposure to other environmental stressors. METHODS This whole-population birth cohort study used record linkage across Western Australian statewide data collections (midwives, psychiatric, hospital admissions, child protection, mortality) to identify liveborn offspring (n = 1046) born 1980-1995 to mothers with schizophrenia, comparing them to offspring of mothers with no recorded psychiatric history (n = 298,370). RESULTS Both maternal schizophrenia and pregnancy complications were each significantly associated with psychotic illness in offspring, with no interaction. Non-obstetric environmental stressors significantly associated with psychotic illness in offspring included the following: being Indigenous; having a mother who was not in a partnered relationship; episodes of disrupted parenting due to hospitalisation of mother, father or child; abuse in childhood; and living in areas of greatest socioeconomic disadvantage and with elevated rates of violent crime. Adjustment for these other environmental stressors reduced the hazard ratio for maternal schizophrenia substantially (from hazard ratio: 5.7, confidence interval: 4.5-7.2 to hazard ratio: 3.5, confidence interval: 2.8-4.4), but not the estimate for pregnancy complications (hazard ratio: 1.1, confidence interval: 1.0-1.2). The population attributable fraction for maternal schizophrenia was 1.4 and for pregnancy complications was 2.1. CONCLUSION Our finding of a substantial decrease in risk of psychotic illness associated with familial liability for psychosis following adjustment for other environmental stressors highlights potentially modifiable risk factors on the trajectory to psychotic illness and suggests that interventions that reduce or manage exposure to these risks may be protective, despite a genetic liability.
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Affiliation(s)
- Vera A Morgan
- Neuropsychiatric Epidemiology Research Unit, School of Population and Global Health, The University of Western Australia, Perth, WA, Australia.,Centre for Clinical Research in Neuropsychiatry, Division of Psychiatry, Medical School, The University of Western Australia, Perth, WA, Australia
| | - Patsy Di Prinzio
- Neuropsychiatric Epidemiology Research Unit, School of Population and Global Health, The University of Western Australia, Perth, WA, Australia
| | - Giulietta Valuri
- Neuropsychiatric Epidemiology Research Unit, School of Population and Global Health, The University of Western Australia, Perth, WA, Australia
| | - Maxine Croft
- Neuropsychiatric Epidemiology Research Unit, School of Population and Global Health, The University of Western Australia, Perth, WA, Australia
| | - Thomas McNeil
- Centre for Clinical Research in Neuropsychiatry, Division of Psychiatry, Medical School, The University of Western Australia, Perth, WA, Australia
| | - Assen Jablensky
- Centre for Clinical Research in Neuropsychiatry, Division of Psychiatry, Medical School, The University of Western Australia, Perth, WA, Australia
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Richardson TG, Harrison S, Hemani G, Davey Smith G. An atlas of polygenic risk score associations to highlight putative causal relationships across the human phenome. eLife 2019; 8:e43657. [PMID: 30835202 PMCID: PMC6400585 DOI: 10.7554/elife.43657] [Citation(s) in RCA: 115] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 02/01/2019] [Indexed: 12/12/2022] Open
Abstract
The age of large-scale genome-wide association studies (GWAS) has provided us with an unprecedented opportunity to evaluate the genetic liability of complex disease using polygenic risk scores (PRS). In this study, we have analysed 162 PRS (p<5×10-05) derived from GWAS and 551 heritable traits from the UK Biobank study (N = 334,398). Findings can be investigated using a web application (http://mrcieu.mrsoftware.org/PRS_atlas/), which we envisage will help uncover both known and novel mechanisms which contribute towards disease susceptibility. To demonstrate this, we have investigated the results from a phenome-wide evaluation of schizophrenia genetic liability. Amongst findings were inverse associations with measures of cognitive function which extensive follow-up analyses using Mendelian randomization (MR) provided evidence of a causal relationship. We have also investigated the effect of multiple risk factors on disease using mediation and multivariable MR frameworks. Our atlas provides a resource for future endeavours seeking to unravel the causal determinants of complex disease.
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Affiliation(s)
- Tom G Richardson
- MRC Integrative Epidemiology Unit (IEU), Population Health Sciences, Bristol Medical SchoolUniversity of BristolBristolUnited Kingdom
| | - Sean Harrison
- MRC Integrative Epidemiology Unit (IEU), Population Health Sciences, Bristol Medical SchoolUniversity of BristolBristolUnited Kingdom
| | - Gibran Hemani
- MRC Integrative Epidemiology Unit (IEU), Population Health Sciences, Bristol Medical SchoolUniversity of BristolBristolUnited Kingdom
| | - George Davey Smith
- MRC Integrative Epidemiology Unit (IEU), Population Health Sciences, Bristol Medical SchoolUniversity of BristolBristolUnited Kingdom
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Abstract
BACKGROUND Although alterations in medial temporal lobe structures have been previously associated with use of cannabis, one of the most widely used illicit drugs, whether such alterations are a cause or effect of cannabis use has been unclear. METHODS In this cross-sectional observational study involving 404 twins/siblings, we have compared cortical thickness and surface area between groups of gender-matched sibling-pairs (concordant cannabis unexposed, concordant exposed and discordant for cannabis exposure) using permutation tests after controlling for potential confounds. Bi-variate polygenic model was used to assess the genetic and environmental contributions underlying cortical morphological phenotypes and frequency of cannabis use. RESULTS Cortical thickness of the right entorhinal cortex was significantly lower in the concordant exposed siblings compared to both discordant unexposed and discordant exposed groups [false discovery rate (FDR)-corrected, q < 0.05]. The association between the right entorhinal cortex thickness and frequency of cannabis use is due to the contribution of significant shared additive genetic (ρg = -0.19 ± 0.08; p = 0.02) factors but not unique environment (ρe = 0.05 ± 0.09; p = 0.53). Significantly lower surface area of the right entorhinal cortex in discordant exposed group compared with the discordant unexposed group furnishes preliminary evidence in support of causal effect of cannabis use (FDR-corrected, q < 0.05). However, bi-variate polygenic model-based analysis did not show any significant effect. CONCLUSIONS Shared genetic liability may underlie the association between cannabis exposure and thinner right entorhinal cortex. Prospective longitudinal studies are necessary to definitively disentangle the cause-effect relationships of cannabis use.
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Affiliation(s)
- Subhadip Paul
- Institute of Psychiatry,Psychology & Neuroscience,King's College London,UK
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Abstract
Treatment-resistant schizophrenia (TRS) affects around one-third of individuals with schizophrenia. Although a number of sociodemographic and clinical predictors of TRS have been identified, data on the genetic risk of TRS are sparse. We aimed to investigate the association between a polygenic risk score for schizophrenia and treatment resistance in patients with schizophrenia. We conducted a nationwide, population-based follow-up study among all Danish individuals born after 1981 and with an incident diagnosis of schizophrenia between 1999 and 2007. Based on genome-wide data polygenic risk scores for schizophrenia were calculated in 862 individuals with schizophrenia. TRS was defined as either clozapine initiation or at least 2 periods of different antipsychotic monotherapies and still being hospitalized. We estimated hazard rate ratios (HRs) for TRS in relation to the polygenic risk score while adjusting for population stratification, age, sex, geographical area at birth, clinical treatment setting, psychiatric comorbidity, and calendar year. Among the 862 individuals with schizophrenia, 181 (21.0%) met criteria for TRS during 4674 person-years of follow-up. We found no significant association between the polygenic risk score and TRS, adjusted HR = 1.13 (95% CI: 0.95-1.35). Based on these results, the use of the polygenic risk score for schizophrenia to identify individuals with TRS is at present inadequate to be of clinical utility at the individual patient level. Future research should include larger genetic samples in combination with non-genetic markers. Moreover, a TRS-specific developed polygenic risk score would be of great interest towards early prediction of TRS.
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Affiliation(s)
- Theresa Wimberley
- National Centre for Register-based Research, Aarhus BSS, Aarhus University, Aarhus, Denmark;,iPSYCH, The Lundbeck Foundation Initiative for Integrative Psychiatric Research, Aarhus, Denmark;,Centre for Integrated Register-based Research, CIRRAU, Aarhus University, Aarhus, Denmark;,To whom correspondence should be addressed; National Centre for Register-based Research, Aarhus BSS, Aarhus University, Fuglesangs allé 4, Building K, DK-8210 Aarhus V, Denmark; tel: +45-87165976, fax: +45-8715-0201, e-mail:
| | - Christiane Gasse
- National Centre for Register-based Research, Aarhus BSS, Aarhus University, Aarhus, Denmark;,iPSYCH, The Lundbeck Foundation Initiative for Integrative Psychiatric Research, Aarhus, Denmark;,Centre for Integrated Register-based Research, CIRRAU, Aarhus University, Aarhus, Denmark
| | - Sandra Melanie Meier
- National Centre for Register-based Research, Aarhus BSS, Aarhus University, Aarhus, Denmark;,iPSYCH, The Lundbeck Foundation Initiative for Integrative Psychiatric Research, Aarhus, Denmark;,Child and Adolescent Mental Health Centre—Mental Health Services Capital Region, Copenhagen, Denmark;,Psychosis Research Unit, Aarhus University Hospital, Risskov, Denmark
| | - Esben Agerbo
- National Centre for Register-based Research, Aarhus BSS, Aarhus University, Aarhus, Denmark;,iPSYCH, The Lundbeck Foundation Initiative for Integrative Psychiatric Research, Aarhus, Denmark;,Centre for Integrated Register-based Research, CIRRAU, Aarhus University, Aarhus, Denmark
| | - James H MacCabe
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK
| | - Henriette Thisted Horsdal
- National Centre for Register-based Research, Aarhus BSS, Aarhus University, Aarhus, Denmark;,iPSYCH, The Lundbeck Foundation Initiative for Integrative Psychiatric Research, Aarhus, Denmark;,Centre for Integrated Register-based Research, CIRRAU, Aarhus University, Aarhus, Denmark
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Narusyte J, Ropponen A, Alexanderson K, Svedberg P. Genetic and Environmental Influences on Disability Pension Due To Mental Diagnoses: Limited Importance of Major Depression, Generalized Anxiety, and Chronic Fatigue. Twin Res Hum Genet 2016; 19:10-6. [PMID: 26648005 DOI: 10.1017/thg.2015.86] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Previous research indicates that liability to disability pension (DP) due to mental diagnoses is moderately influenced by genetic factors. This study investigates whether genetic contributions to the liability to DP due to mood and neurotic diagnoses overlap with the genetic influences on major depression (MD), generalized anxiety disorder (GAD), or chronic fatigue (CF). METHOD A prospective cohort study including 9,985 female twins born in Sweden 1933-1958. The presence of MD, GAD, and CF was assessed by computer-assisted telephone interviews conducted in 1998-2002. Data on DP due to mood and neurotic diagnoses were obtained from nationwide registers for the years 1998-2010. Common genetic and environmental influences on the phenotypes were estimated by applying structural equation modeling. RESULTS The prevalence of MD/GAD was 30%, CF 8%, and DP due to mood and neurotic diagnoses 3% in 2010. Genetic effects on MD/GAD explained 31% of the total genetic variation in DP, whereas genetic contributions in common with CF were small and not significant. The majority of the total non-shared environmental variance in DP (85%) was explained by the factors that were unique to DP. CONCLUSIONS Large proportions of genetic and non-shared environmental influences in DP due to mood and neurotic diagnoses were not explained by the contributions from MD/GAD or CF. The results suggest that the process leading to DP is complex and influenced by factors other than those related to the disorder underlying DP.
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11
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Abstract
BACKGROUND The salience of a visual stimulus is often reduced by nearby stimuli, an effect known as surround suppression of perceived contrast, which may help in locating the borders of an object. Weaker surround suppression has been observed in schizophrenia but it is unclear whether this abnormality is present in other mental disorders with similar symptomatology, or is evident in people with genetic liability for schizophrenia. METHOD By examining surround suppression among subjects with schizophrenia or bipolar affective disorder, their unaffected biological relatives and healthy controls we sought to determine whether diminished surround suppression was specific to schizophrenia, and if subjects with a genetic risk for either disorder would show similar deficits. Measuring perceived contrast in different surround conditions also allowed us to investigate how this suppression depends on the similarity of target and surrounding stimuli. RESULTS Surround suppression was weaker among schizophrenia patients regardless of surround configuration. Subjects with bipolar affective disorder showed an intermediate deficit, with stronger suppression than in schizophrenia but weaker than control subjects. Surround suppression was normal in relatives of both patient groups. Findings support a deficit in broadly tuned (rather than sharply orientation- or direction-selective) suppression mechanisms. CONCLUSIONS Weak broadly tuned suppression during visual perception is evident in schizophrenia and bipolar affective disorder, consistent with impaired gain control related to the clinical expression of these conditions.
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Affiliation(s)
- Michael-Paul Schallmo
- Graduate Program in Neuroscience, University of Minnesota, Minneapolis, Minnesota, USA
| | - Scott R. Sponheim
- Veterans Affairs Medical Center, Minneapolis, Minnesota, USA
- Department of Psychiatry, University of Minnesota, Minneapolis, Minnesota, USA
- Department of Psychology, University of Minnesota, Minneapolis, Minnesota, USA
| | - Cheryl A. Olman
- Department of Psychology, University of Minnesota, Minneapolis, Minnesota, USA
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12
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Abstract
PURPOSE OF REVIEW A strong male bias in autism spectrum disorder (ASD) prevalence has been observed with striking consistency, but no mechanism has yet to definitively account for this sex difference. This review explores the current status of epidemiological, genetic, and neuroendocrinological work addressing ASD prevalence and liability in males and females, so as to frame the major issues necessary to pursue a more complete understanding of the biological basis for sex-differential risk. RECENT FINDINGS Recent studies continue to report a male bias in ASD prevalence, but also suggest that sex differences in phenotypic presentation, including fewer restricted and repetitive behaviors and externalizing behavioral problems in females, may contribute to this bias. Genetic studies demonstrate that females are protected from the effects of heritable and de-novo ASD risk variants, and compelling work suggests that sex chromosomal genes and/or sex hormones, especially testosterone, may modulate the effects of genetic variation on the presentation of an autistic phenotype. SUMMARY ASDs affect females less frequently than males, and several sex-differential genetic and hormonal factors may contribute. Future work to determine the mechanisms by which these factors confer risk and protection to males and females is essential.
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Affiliation(s)
- Donna M Werling
- Neuroscience Interdepartmental Program, Brain Research Institute, Los Angeles, California, USA
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13
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Foxe JJ, Yeap S, Leavitt VM. Brief monocular deprivation as an assay of short-term visual sensory plasticity in schizophrenia - "the binocular effect". Front Psychiatry 2013; 4:164. [PMID: 24381563 PMCID: PMC3865422 DOI: 10.3389/fpsyt.2013.00164] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Accepted: 11/25/2013] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Visual sensory processing deficits are consistently observed in schizophrenia, with clear amplitude reduction of the visual evoked potential (VEP) during the initial 50-150 ms of processing. Similar deficits are seen in unaffected first-degree relatives and drug-naïve first-episode patients, pointing to these deficits as potential endophenotypic markers. Schizophrenia is also associated with deficits in neural plasticity, implicating dysfunction of both glutamatergic and GABAergic systems. Here, we sought to understand the intersection of these two domains, asking whether short-term plasticity during early visual processing is specifically affected in schizophrenia. METHODS Brief periods of monocular deprivation (MD) induce relatively rapid changes in the amplitude of the early VEP - i.e., short-term plasticity. Twenty patients and 20 non-psychiatric controls participated. VEPs were recorded during binocular viewing, and were compared to the sum of VEP responses during brief monocular viewing periods (i.e., Left-eye + Right-eye viewing). RESULTS Under monocular conditions, neurotypical controls exhibited an effect that patients failed to demonstrate. That is, the amplitude of the summed monocular VEPs was robustly greater than the amplitude elicited binocularly during the initial sensory processing period. In patients, this "binocular effect" was absent. LIMITATIONS Patients were all medicated. Ideally, this study would also include first-episode unmedicated patients. CONCLUSION These results suggest that short-term compensatory mechanisms that allow healthy individuals to generate robust VEPs in the context of MD are not effectively activated in patients with schizophrenia. This simple assay may provide a useful biomarker of short-term plasticity in the psychotic disorders and a target endophenotype for therapeutic interventions.
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Affiliation(s)
- John J Foxe
- The Cognitive Neurophysiology Laboratory, Nathan S. Kline Institute for Psychiatric Research , Orangeburg, NY , USA ; The Cognitive Neurophysiology Laboratory, St. Vincent's Hospital , Dublin , Ireland ; Program in Neuropsychology, Department of Psychology, Queens College, The City University of New York , Flushing, NY , USA ; The Sheryl and Daniel R. Tishman Cognitive Neurophysiology Laboratory, Departments of Pediatrics and Neuroscience, Children's Evaluation and Rehabilitation Center (CERC), Albert Einstein College of Medicine , Bronx, NY , USA
| | - Sherlyn Yeap
- The Cognitive Neurophysiology Laboratory, St. Vincent's Hospital , Dublin , Ireland
| | - Victoria M Leavitt
- The Cognitive Neurophysiology Laboratory, Nathan S. Kline Institute for Psychiatric Research , Orangeburg, NY , USA ; Program in Neuropsychology, Department of Psychology, Queens College, The City University of New York , Flushing, NY , USA
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14
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Gooding DC, Coleman MJ, Roberts SA, Shenton ME, Levy DL, Erlenmeyer-Kimling L. Thought disorder in offspring of schizophrenic parents: findings from the New York High-Risk Project. Schizophr Bull 2012; 38:263-71. [PMID: 20554785 PMCID: PMC3283153 DOI: 10.1093/schbul/sbq061] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The goal of the present analyses was to examine the hypothesis that mild forms of thought disorder (TD) may serve as an indicator of genetic liability for schizophrenia. A subset of 232 subjects drawn from the New York High-Risk Project was used to compare individuals at high risk for schizophrenia (ie, offspring of parents with schizophrenia; n = 63) with 2 groups of individuals at low risk for schizophrenia (ie, offspring of parents with affective disorder [n = 52] and offspring of psychiatrically normal parents [n = 117]). Subjects were administered the Rorschach Inkblot Test, and their responses were assessed according to the Thought Disorder Index (TDI). The high-risk offspring displayed significantly more TD than the other 2 groups, as shown by significantly higher TDI scores. Moreover, they had more deviant verbalizations, according to their significantly higher scores on a composite Idiosyncratic Verbalizations score. As expected, the offspring who developed psychosis produced more TD in adolescence than those who did not develop psychosis. In the sample as a whole, TD scores during late adolescence/early adulthood were positively associated with schizotypal features during mid-adulthood. These findings support the assertion that the presence of TD serves as an endophenotypic marker of a schizophrenia diathesis.
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Affiliation(s)
- Diane C. Gooding
- Department of Psychology, University of Wisconsin–Madison, Madison, WI,Department of Psychiatry, University of Wisconsin–Madison, Madison, WI,Department of Psychiatry, College of Physicians and Surgeons, Columbia University, New York, NY,To whom correspondence should be addressed; tel: 608-262-3918, fax: 608-262-4029, e-mail:
| | - Michael J. Coleman
- Psychology Research Laboratory, McLean Hospital, Harvard Medical School, Belmont, MA
| | - Simone A. Roberts
- Department of Psychiatry, College of Physicians and Surgeons, Columbia University, New York, NY,Department of Psychiatric and Medical Genetics, New York State Psychiatric Institute, New York, NY
| | - Martha E. Shenton
- Psychiatry Neuroimaging Laboratory, Department of Psychiatry, Brigham and Women’s Hospital, Boston, MA
| | - Deborah L. Levy
- Psychology Research Laboratory, McLean Hospital, Harvard Medical School, Belmont, MA
| | - L. Erlenmeyer-Kimling
- Department of Psychiatry, College of Physicians and Surgeons, Columbia University, New York, NY,Psychiatry Neuroimaging Laboratory, Department of Psychiatry, Brigham and Women’s Hospital, Boston, MA,Department of Genetics and Development, College of Physicians and Surgeons, Columbia University, New York, NY
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Foxe JJ, Yeap S, Snyder AC, Kelly SP, Thakore JH, Molholm S. The N1 auditory evoked potential component as an endophenotype for schizophrenia: high-density electrical mapping in clinically unaffected first-degree relatives, first-episode, and chronic schizophrenia patients. Eur Arch Psychiatry Clin Neurosci 2011; 261:331-9. [PMID: 21153832 PMCID: PMC3119740 DOI: 10.1007/s00406-010-0176-0] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2009] [Accepted: 11/23/2010] [Indexed: 12/19/2022]
Abstract
The N1 component of the auditory evoked potential (AEP) is a robust and easily recorded metric of auditory sensory-perceptual processing. In patients with schizophrenia, a diminution in the amplitude of this component is a near-ubiquitous finding. A pair of recent studies has also shown this N1 deficit in first-degree relatives of schizophrenia probands, suggesting that the deficit may be linked to the underlying genetic risk of the disease rather than to the disease state itself. However, in both these studies, a significant proportion of the relatives had other psychiatric conditions. As such, although the N1 deficit represents an intriguing candidate endophenotype for schizophrenia, it remains to be shown whether it is present in a group of clinically unaffected first-degree relatives. In addition to testing first-degree relatives, we also sought to replicate the N1 deficit in a group of first-episode patients and in a group of chronic schizophrenia probands. Subject groups consisted of 35 patients with schizophrenia, 30 unaffected first-degree relatives, 13 first-episode patients, and 22 healthy controls. Subjects sat in a dimly lit room and listened to a series of simple 1,000-Hz tones, indicating with a button press whenever they heard a deviant tone (1,500 Hz; 17% probability), while the AEP was recorded from 72 scalp electrodes. Both chronic and first-episode patients showed clear N1 amplitude decrements relative to healthy control subjects. Crucially, unaffected first-degree relatives also showed a clear N1 deficit. This study provides further support for the proposal that the auditory N1 deficit in schizophrenia is linked to the underlying genetic risk of developing this disorder. In light of recent studies, these results point to the N1 deficit as an endophenotypic marker for schizophrenia. The potential future utility of this metric as one element of a multivariate endophenotype is discussed.
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Affiliation(s)
- John J Foxe
- The Cognitive Neurophysiology Laboratory, Nathan S. Kline Institute for Psychiatric Research, Program in Cognitive Neuroscience and Schizophrenia, Orangeburg, NY 10962, USA.
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Singh AL, D'Onofrio BM, Slutske WS, Turkheimer E, Emery RE, Harden KP, Heath AC, Madden PAF, Statham DJ, Martin NG. Parental depression and offspring psychopathology: a children of twins study. Psychol Med 2011; 41:1385-1395. [PMID: 21054918 PMCID: PMC3119509 DOI: 10.1017/s0033291710002059] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND Associations between parental depression and offspring affective and disruptive disorders are well documented. Few genetically informed studies have explored the processes underlying intergenerational associations. METHOD A semi-structured interview assessing DSM-III-R psychiatric disorders was administered to twins (n=1296) from the Australian Twin Register (ATR), their spouses (n=1046) and offspring (n=2555). We used the Children of Twins (CoT) design to delineate the extent to which intergenerational associations were consistent with a causal influence or due to genetic confounds. RESULTS In between-family analyses, parental depression was associated significantly with offspring depression [hazard ratio (HR) 1.52, 95% confidence interval (CI) 1.20-1.93] and conduct disorder (CD; HR 2.27, CI 1.31-3.93). Survival analysis indicated that the intergenerational transmission of depression is consistent with a causal (environmental) inference, with a significant intergenerational association in offspring of discordant monozygotic (MZ) twin pairs (HR 1.39, CI 1.00-1.94). Logistic regression analysis suggested that the parental depression-offspring CD association was due to shared genetic liability in the parents and offspring. No intergenerational association was found when comparing the offspring of discordant MZ twins [odds ratio (OR) 1.41, CI 0.63-3.14], but offspring of discordant dizygotic (DZ) twins differed in their rates of CD (OR 2.53, CI 0.95-6.76). All findings remained after controlling for several measured covariates, including history of depression and CD in the twins' spouses. CONCLUSIONS The mechanisms underlying associations between parental depression and offspring psychopathology seem to differ depending on the outcome. The results are consistent with a causal environmental role of parental depression in offspring depression whereas common genetic factors account for the association of parental depression and offspring CD.
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Affiliation(s)
- A L Singh
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA.
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