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Karcher NR, Sotiras A, Niendam TA, Walker EF, Jackson JJ, Barch DM. Examining the Most Important Risk Factors Predicting Persistent and Distressing Psychotic-like Experiences in Youth. BIOLOGICAL PSYCHIATRY. COGNITIVE NEUROSCIENCE AND NEUROIMAGING 2024:S2451-9022(24)00142-3. [PMID: 38849031 DOI: 10.1016/j.bpsc.2024.05.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 05/17/2024] [Accepted: 05/23/2024] [Indexed: 06/09/2024]
Abstract
BACKGROUND Persistence and distress distinguish more clinically significant psychotic-like experiences (PLEs) from those that are less likely to be associated with impairment and/or need for care. Identifying risk factors that differentiate clinically relevant PLEs early in development is important for improving our understanding of the etiopathogenesis of these experiences. Machine learning analyses examined the most important baseline factors distinguishing persistent distressing PLEs. METHODS Using Adolescent Brain Cognitive Development Study PLEs data over three time points (ages 9-13), individuals with persistent distressing PLEs (n=303), transient distressing PLEs (n=374), and demographically matched low-level PLEs groups were created. Random forest classification models were trained to distinguish among persistent distressing vs. low-level PLEs, transient distressing vs. low-level PLEs, and persistent distressing vs. transient distressing PLEs. Models were trained using identified baseline predictors as input features (i.e., cognitive, neural [cortical thickness, resting state functional connectivity (RSFC)], developmental milestone delays, internalizing symptoms, adverse childhood events). RESULTS The model distinguishing persistent distressing vs. low-level PLEs showed the highest accuracy (test sample accuracy=69.33%; 95% CI:61.29%-76.59%). The most important predictors included internalizing symptoms, adverse childhood events, and cognitive functioning. Models distinguishing persistent vs. transient distressing PLEs generally performed poorly. CONCLUSIONS Model performance metrics indicated that while most important factors overlapped across models (e.g., internalizing symptoms), adverse childhood events were especially important for predicting persistent distressing PLEs. Machine learning analyses proved useful for distinguishing the most clinically relevant group from the least clinically relevant group but showed limited ability to distinguish among clinically relevant groups that differed in PLE persistence.
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Affiliation(s)
- Nicole R Karcher
- Washington University School of Medicine, Department of Psychiatry.
| | - Aristeidis Sotiras
- Washington University School of Medicine, Department of Radiology; Washington University School of Medicine, Institute for Informatics, Data Science & Biostatistics
| | - Tara A Niendam
- University of California, Davis, Dept. of Psychiatry and Behavioral Sciences
| | | | - Joshua J Jackson
- Washington University in St. Louis, Department of Psychological and Brain Sciences
| | - Deanna M Barch
- Washington University School of Medicine, Department of Psychiatry; Washington University in St. Louis, Department of Psychological and Brain Sciences
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Dhondt N, Staines L, Healy C, Cannon M. Childhood adversity and recurrence of psychotic experiences during adolescence: the role of mediation in an analysis of a population-based longitudinal cohort study. Psychol Med 2023; 53:4046-4054. [PMID: 35311635 PMCID: PMC10317802 DOI: 10.1017/s003329172200071x] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 01/15/2022] [Accepted: 02/22/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND Psychotic experiences (PEs) are relatively common in childhood and adolescence and are associated with increased risk of functional issues and psychiatric illness in young adulthood, and PEs that recur are associated with increased risk of poorer psychiatric and functional outcomes. Childhood adversity is a well-established risk factor for PEs. The aim of this study was to investigate (1) the relationship between childhood adversity and recurring PEs in adolescence and (2) candidate mediators of that relationship. METHODS We used data from Cohort '98 of the Growing Up in Ireland study (n = 6039) at three time points (ages 9, 13 and 17) to investigate the relationship between childhood adversity (parent-reported at age 9), recurring PEs (measured using a subset of the Adolescent Psychotic-like Symptoms Screener at ages 13 and 17). The mediating roles of parent-child relationship, internalising and externalising difficulties, self-concept, physical activity, dietary quality, perceived neighbourhood safety and friendship quantity were investigated using the KHB path decomposition method. RESULTS Childhood adversity was associated with an increased risk of recurring PEs with a population attributable fraction of 23%. Internalising difficulties and self-concept explained 13% of the relationship between childhood adversity and PEs suggesting a partial mediation. A significant direct effect remained between childhood adversity and recurring PEs. CONCLUSIONS The established relationship between childhood adversity and PEs may be mainly driven by the relationship between childhood adversity and recurring PEs. Internalising difficulties and self-concept together mediate part of the relationship between childhood adversity and recurring PEs.
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Affiliation(s)
- N. Dhondt
- Department of Psychiatry, Royal College of Surgeons in Ireland, Dublin 2, Dublin, Ireland
- St James's Hospital, Dublin 8, Dublin, Ireland
| | - L. Staines
- Department of Psychiatry, Royal College of Surgeons in Ireland, Dublin 2, Dublin, Ireland
| | - C. Healy
- Department of Psychiatry, Royal College of Surgeons in Ireland, Dublin 2, Dublin, Ireland
| | - M. Cannon
- Department of Psychiatry, Royal College of Surgeons in Ireland, Dublin 2, Dublin, Ireland
- Department of Psychiatry, Beaumont Hospital, Dublin 9, Dublin, Ireland
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Edmondson-Stait AJ, Shen X, Adams MJ, Barbu MC, Jones HJ, Miron VE, Allardyce J, Boardman JP, Lawrie SM, McIntosh AM, Khandaker GM, Kwong AS, Whalley HC. Early-life inflammatory markers and subsequent psychotic and depressive episodes between 10 to 28 years of age. Brain Behav Immun Health 2022; 26:100528. [PMID: 36277463 PMCID: PMC9582583 DOI: 10.1016/j.bbih.2022.100528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 10/01/2022] [Indexed: 11/05/2022] Open
Abstract
Inflammation is implicated in depression and psychosis, including association of childhood inflammatory markers on the subsequent risk of developing symptoms. However, it is unknown whether early-life inflammatory markers are associated with the number of depressive and psychotic symptoms from childhood to adulthood. Using the prospective Avon Longitudinal Study of Children and Parents birth cohort (N = up-to 6401), we have examined longitudinal associations of early-life inflammation [exposures: interleukin-6 (IL-6), C-reactive protein (CRP) levels at age 9y; IL-6 and CRP DNA-methylation (DNAm) scores at birth and age 7y; and IL-6 and CRP polygenic risk scores (PRSs)] with the number of depressive episodes and psychotic experiences (PEs) between ages 10-28 years. Psychiatric outcomes were assessed using the Short Mood and Feelings Questionnaire and Psychotic Like Symptoms Questionnaires, respectively. Exposure-outcome associations were tested using negative binomial models, which were adjusted for metabolic and sociodemographic factors. Serum IL-6 levels at age 9y were associated with the total number of depressive episodes between 10 and 28y in the base model (n = 4835; β = 0.066; 95%CI:0.020-0.113; pFDR = 0.041) which was weaker when adjusting for metabolic and sociodemographic factors. Weak associations were observed between inflammatory markers (serum IL-6 and CRP DNAm scores) and total number of PEs. Other inflammatory markers were not associated with depression or PEs. Early-life inflammatory markers are associated with the burden of depressive episodes and of PEs subsequently from childhood to adulthood. These findings support a potential role of early-life inflammation in the aetiology of depression and psychosis and highlight inflammation as a potential target for treatment and prevention.
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Affiliation(s)
- Amelia J. Edmondson-Stait
- Translational Neuroscience PhD Programme, Centre for Clinical Brain Sciences, University of Edinburgh, UK
| | - Xueyi Shen
- Centre for Clinical Brain Sciences, University of Edinburgh, UK
| | - Mark J. Adams
- Centre for Clinical Brain Sciences, University of Edinburgh, UK
| | - Miruna C. Barbu
- Centre for Clinical Brain Sciences, University of Edinburgh, UK
| | - Hannah J. Jones
- National Institute for Health Research Bristol Biomedical Research Centre, At University Hospitals Bristol and Weston NHS Foundation Trust and the University of Bristol, UK
- MRC Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, UK
- Centre for Academic Mental Health, Population Health Sciences, Bristol Medical School, University of Bristol, UK
| | - Veronique E. Miron
- Medical Research Council Centre for Reproductive Health, The Queen's Medical Research Institute, The University of Edinburgh, UK
| | | | - James P. Boardman
- Centre for Clinical Brain Sciences, University of Edinburgh, UK
- Medical Research Council Centre for Reproductive Health, The Queen's Medical Research Institute, The University of Edinburgh, UK
| | | | | | - Golam M. Khandaker
- MRC Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, UK
- Centre for Academic Mental Health, Population Health Sciences, Bristol Medical School, University of Bristol, UK
| | - Alex S.F. Kwong
- Centre for Clinical Brain Sciences, University of Edinburgh, UK
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Langer ÁI, Wardenaar K, Wigman JTW, Ulloa JL, Núñez D. A Latent Profile Analysis of Psychotic Experiences, Non-psychotic Symptoms, Suicidal Ideation and Underlying Mechanisms in a Sample of Adolescents From the General Population. Front Psychiatry 2022; 13:926556. [PMID: 35832591 PMCID: PMC9271879 DOI: 10.3389/fpsyt.2022.926556] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 05/30/2022] [Indexed: 11/23/2022] Open
Abstract
Psychotic experiences (PEs) are prevalent in the general population, particularly in adolescents. PEs are associated with various negative outcomes such as psychotic, depressive, anxiety and post-traumatic stress disorders and suicidal behavior. Recent studies in the general population have suggested that what makes PEs relevant is not so much the experiences per se, but their association with non-psychotic comorbidity and other transdiagnostic domains. Thus, there is a need for a better understanding of how PEs exist in a larger psychopathological context in adolescents. In the present study we aimed to explore this, using latent profile analysis (LPA) to identify different patterns in which PEs, psychiatric symptoms and psychological processes co-occur. LPA was conducted using data from an adolescent general population subsample (n = 335) with PEs. We conducted LPA, using measures of PEs, psychiatric symptoms and behaviors (depression, anxiety post-traumatic stress disorder and suicidal behavior) and cognitive and affective processes of entrapment/defeat and emotional regulation as manifest variables. We found that the best fit was obtained with a four-class solution that distinguished primarily between different levels of overall severity: "low symptomatology" (19.1%), "mild-moderate symptomatology" (39.4%), "moderate symptomatology" (33.7%); "high symptomatology" (7.8%). Levels of depression, post-traumatic stress symptoms and defeat/entrapment were most differentiated between classes. The high symptomatology group showed the highest scores in all psychiatric symptoms suicidal ideation, and emotional/cognitive domains, except in cognitive reappraisal. This group also showed the highest usage of emotional suppression. Our results suggest that the assessment of mental health risk in adolescents should be aware that PEs exist in a broad context of other domains of psychopathology and transdiagnostic cognitive and affective processes.
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Affiliation(s)
- Álvaro I Langer
- Mind-Body Lab, Institute of Psychological Studies, Faculty of Medicine, Universidad Austral de Chile, Valdivia, Chile.,Agencia Nacional de Investigaciòn y Desarrollo (ANID), Millennium Nucleus to Improve the Mental Health of Adolescents and Youths, Imhay, Santiago, Chile.,Associative Research Program, Center of Cognitive Sciences, Faculty of Psychology, Universidad de Talca, Talca, Chile
| | - Klaas Wardenaar
- Department of Psychiatry, Interdisciplinary Centre for Psychopathology and Emotion Regulation, University Medical Center Groningen, Groningen, Netherlands
| | - Johanna T W Wigman
- Department of Psychiatry, Interdisciplinary Centre for Psychopathology and Emotion Regulation, University Medical Center Groningen, Groningen, Netherlands
| | - José Luis Ulloa
- Agencia Nacional de Investigaciòn y Desarrollo (ANID), Millennium Nucleus to Improve the Mental Health of Adolescents and Youths, Imhay, Santiago, Chile.,Associative Research Program, Center of Cognitive Sciences, Faculty of Psychology, Universidad de Talca, Talca, Chile
| | - Daniel Núñez
- Agencia Nacional de Investigaciòn y Desarrollo (ANID), Millennium Nucleus to Improve the Mental Health of Adolescents and Youths, Imhay, Santiago, Chile.,Associative Research Program, Center of Cognitive Sciences, Faculty of Psychology, Universidad de Talca, Talca, Chile
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