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Berry JA, Guhle DC, Davis RL. Active forgetting and neuropsychiatric diseases. Mol Psychiatry 2024:10.1038/s41380-024-02521-9. [PMID: 38532011 DOI: 10.1038/s41380-024-02521-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 03/04/2024] [Accepted: 03/06/2024] [Indexed: 03/28/2024]
Abstract
Recent and pioneering animal research has revealed the brain utilizes a variety of molecular, cellular, and network-level mechanisms used to forget memories in a process referred to as "active forgetting". Active forgetting increases behavioral flexibility and removes irrelevant information. Individuals with impaired active forgetting mechanisms can experience intrusive memories, distressing thoughts, and unwanted impulses that occur in neuropsychiatric diseases. The current evidence indicates that active forgetting mechanisms degrade, or mask, molecular and cellular memory traces created in synaptic connections of "engram cells" that are specific for a given memory. Combined molecular genetic/behavioral studies using Drosophila have uncovered a complex system of cellular active-forgetting pathways within engram cells that is regulated by dopamine neurons and involves dopamine-nitric oxide co-transmission and reception, endoplasmic reticulum Ca2+ signaling, and cytoskeletal remodeling machinery regulated by small GTPases. Some of these molecular cellular mechanisms have already been found to be conserved in mammals. Interestingly, some pathways independently regulate forgetting of distinct memory types and temporal phases, suggesting a multi-layering organization of forgetting systems. In mammals, active forgetting also involves modulation of memory trace synaptic strength by altering AMPA receptor trafficking. Furthermore, active-forgetting employs network level mechanisms wherein non-engram neurons, newly born-engram neurons, and glial cells regulate engram synapses in a state and experience dependent manner. Remarkably, there is evidence for potential coordination between the network and cellular level forgetting mechanisms. Finally, subjects with several neuropsychiatric diseases have been tested and shown to be impaired in active forgetting. Insights obtained from research on active forgetting in animal models will continue to enrich our understanding of the brain dysfunctions that occur in neuropsychiatric diseases.
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Affiliation(s)
- Jacob A Berry
- Department of Biological Sciences, University of Alberta, Edmonton, AL, T6G 2E9, Canada.
| | - Dana C Guhle
- Department of Biological Sciences, University of Alberta, Edmonton, AL, T6G 2E9, Canada
| | - Ronald L Davis
- Department of Neuroscience, UF Scripps Institute for Biomedical Innovation & Technology, 130 Scripps Way, Jupiter, FL, 33458, USA.
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Martini J, Bröckel KL, Leopold K, Berndt C, Sauer C, Maicher B, Juckel G, Krüger-Özgürdal S, Fallgatter AJ, Lambert M, Bechdolf A, Reif A, Matura S, Biere S, Kittel-Schneider S, Stamm T, Bermpohl F, Kircher T, Falkenberg I, Jansen A, Dannlowski U, Correll CU, Fusar-Poli P, Hempel LM, Mikolas P, Ritter P, Bauer M, Pfennig A. Young people at risk for developing bipolar disorder: Two-year findings from the multicenter prospective, naturalistic Early-BipoLife study. Eur Neuropsychopharmacol 2024; 78:43-53. [PMID: 37913697 DOI: 10.1016/j.euroneuro.2023.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 09/18/2023] [Accepted: 10/09/2023] [Indexed: 11/03/2023]
Abstract
Early identification and intervention of individuals with an increased risk for bipolar disorder (BD) may improve the course of illness and prevent long‑term consequences. Early-BipoLife, a multicenter, prospective, naturalistic study, examined risk factors of BD beyond family history in participants aged 15-35 years. At baseline, positively screened help-seeking participants (screenBD at-risk) were recruited at Early Detection Centers and in- and outpatient depression and attention-deficit/hyperactivity disorder (ADHD) settings, references (Ref) drawn from a representative cohort. Participants reported sociodemographics and medical history and were repeatedly examined regarding psychopathology and the course of risk factors. N = 1,083 screenBD at-risk and n = 172 Ref were eligible for baseline assessment. Within the first two years, n = 31 screenBD at-risk (2.9 %) and none of Ref developed a manifest BD. The cumulative transition risk was 0.0028 at the end of multistep assessment, 0.0169 at 12 and 0.0317 at 24 months (p = 0.021). The transition rate with a BD family history was 6.0 %, 4.7 % in the Early Phase Inventory for bipolar disorders (EPIbipolar), 6.6 % in the Bipolar Prodrome Interview and Symptom Scale-Prospective (BPSS-FP) and 3.2 % with extended Bipolar At-Risk - BARS criteria). In comparison to help-seeking young patients from psychosis detection services, transition rates in screenBD at-risk participants were lower. The findings of Early-BipoLife underscore the importance of considering risk factors beyond family history in order to improved early detection and interventions to prevent/ameliorate related impairment in the course of BD. Large long-term cohort studies are crucial to understand the developmental pathways and long-term course of BD, especially in people at- risk.
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Affiliation(s)
- Julia Martini
- Department of Psychiatry and Psychotherapy, University Hospital, TUD Dresden University of Technology, Dresden, Germany
| | - Kyra Luisa Bröckel
- Department of Psychiatry and Psychotherapy, University Hospital, TUD Dresden University of Technology, Dresden, Germany
| | - Karolina Leopold
- Department of Psychiatry and Psychotherapy, University Hospital, TUD Dresden University of Technology, Dresden, Germany; Department of Psychiatry, Psychotherapy and Psychosomatics, Vivantes Hospital at Urban and Vivantes Hospital at Friedrichshain, Berlin, Germany
| | - Christina Berndt
- Department of Psychiatry and Psychotherapy, University Hospital, TUD Dresden University of Technology, Dresden, Germany
| | - Cathrin Sauer
- Department of Psychiatry and Psychotherapy, University Hospital, TUD Dresden University of Technology, Dresden, Germany
| | - Birgit Maicher
- Department of Psychiatry and Psychotherapy, University Hospital, TUD Dresden University of Technology, Dresden, Germany
| | - Georg Juckel
- Department of Psychiatry and Psychotherapy, LWL-University Hospital Bochum, Ruhr-University Bochum, Bochum, Germany
| | - Seza Krüger-Özgürdal
- Department of Psychiatry and Psychotherapy, LWL-University Hospital Bochum, Ruhr-University Bochum, Bochum, Germany
| | - Andreas J Fallgatter
- Tübingen Center for Mental Health (TüCMH), Department of General Psychiatry and Psychotherapy, University Hospital Tübingen, Tübingen, Germany
| | - Martin Lambert
- Department of Psychiatry and Psychotherapy, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Andreas Bechdolf
- Department of Psychiatry, Psychotherapy and Psychosomatics, Vivantes Hospital at Urban and Vivantes Hospital at Friedrichshain, Berlin, Germany; Department of Psychiatry and Psychotherapy, Campus Charité Mitte, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Andreas Reif
- Department of Psychiatry, Psychosomatics and Psychotherapy, University Hospital Frankfurt am Main, Frankfurt am Main, Germany
| | - Silke Matura
- Department of Psychiatry, Psychosomatics and Psychotherapy, University Hospital Frankfurt am Main, Frankfurt am Main, Germany
| | - Silvia Biere
- Department of Psychiatry, Psychosomatics and Psychotherapy, University Hospital Frankfurt am Main, Frankfurt am Main, Germany
| | - Sarah Kittel-Schneider
- Department of Psychiatry, Psychosomatics and Psychotherapy, University Hospital Frankfurt am Main, Frankfurt am Main, Germany; Department of Psychiatry, Psychotherapy and Psychosomatics, University Hospital Würzburg, Würzburg, Germany
| | - Thomas Stamm
- Department of Psychiatry and Psychotherapy, Campus Charité Mitte, Charité Universitätsmedizin Berlin, Berlin, Germany; Department of Psychiatry, Psychotherapy and Psychosomatic, Hospitals of Ruppin - Medical School Brandenburg Theodor Fontane, Neuruppin, Germany
| | - Felix Bermpohl
- Department of Psychiatry and Psychotherapy, Campus Charité Mitte, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Tilo Kircher
- Department for Psychiatry and Psychotherapy, University Hospital Marburg, Marburg, Germany
| | - Irina Falkenberg
- Department for Psychiatry and Psychotherapy, University Hospital Marburg, Marburg, Germany
| | - Andreas Jansen
- Department for Psychiatry and Psychotherapy, University Hospital Marburg, Marburg, Germany
| | - Udo Dannlowski
- Institute for Translational Psychiatry, University of Münster, Münster, Germany
| | - Christoph U Correll
- Department of Child- and Adolescent Psychiatry, Charité Universitätsmedizin Berlin, Berlin, Germany; Department of Psychiatry, The Zucker Hillside Hospital, Northwell Health, Glen Oaks, NY, USA; Department of Psychiatry and Molecular Medicine, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA
| | - Paolo Fusar-Poli
- EPIC Lab, Department of Psychosis Studies, King's College London, London, UK; Department of Brain and Behavioral Health Sciences, University of Pavia, Pavia, Italy
| | - Lisa Marie Hempel
- Department of Psychiatry and Psychotherapy, University Hospital, TUD Dresden University of Technology, Dresden, Germany
| | - Pavol Mikolas
- Department of Psychiatry and Psychotherapy, University Hospital, TUD Dresden University of Technology, Dresden, Germany
| | - Philipp Ritter
- Department of Psychiatry and Psychotherapy, University Hospital, TUD Dresden University of Technology, Dresden, Germany
| | - Michael Bauer
- Department of Psychiatry and Psychotherapy, University Hospital, TUD Dresden University of Technology, Dresden, Germany
| | - Andrea Pfennig
- Department of Psychiatry and Psychotherapy, University Hospital, TUD Dresden University of Technology, Dresden, Germany.
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Saxena K, Simonetti A, Verrico CD, Janiri D, Di Nicola M, Catinari A, Kurian S, Saxena J, Mwangi B, Soares JC. Neurocognitive Correlates of Cerebellar Volumetric Alterations in Youth with Pediatric Bipolar Spectrum Disorders and Bipolar Offspring. Curr Neuropharmacol 2023; 21:1367-1378. [PMID: 36239717 PMCID: PMC10324334 DOI: 10.2174/1570159x21666221014120332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 10/07/2022] [Accepted: 10/09/2022] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Emerging evidence points towards the involvement of the cerebellum in the processing of emotions and pathophysiology of mood disorders. However, cerebellar and related cognitive alterations in youth with pediatric bipolar disorder (PBD) and those at high risk to develop the disorder, such as bipolar offspring (BD-OFF) are not clearly defined. OBJECTIVE To investigate cerebellar gray and white matter volumes, cognition, and their relationship in youth with PBD and BD-OFF. METHODS Thirty youth (7 to 17 years, inclusive) with PBD, 30 BD-OFF and 40 healthy controls (HC) were recruited. Study participants underwent a computer-based cognitive battery assessing affective processing, executive function, attention, psychomotor speed, and learning. Three-tesla MRI scan was performed to assess cerebellar white and gray matter volumes. Cerebellar segmentation was performed with FreeSurfer. Statistical analyses include between-group differences in cognitive domains, cerebellar gray, and white matter volumes. Relationships between cerebellar volumes and cognitive domains were examined. RESULTS Youth with PBD showed greater cerebellar gray matter volumes than both BD-OFF and HC, whereas no differences were present between BD-OFF and HC. Both youth with PBD and BD-OFF showed altered processing of negative emotions and a bias towards positive emotions. In youth with PBD and BD-OFF, greater impairment in the processing of emotions correlated with greater cerebellar gray matter volumes. CONCLUSION The present findings corroborate hypotheses on cerebellar involvement in the processing of emotions and the pathophysiology of PBD. The presence of cerebellar dysfunction in BD-OFF is unclear.
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Affiliation(s)
- Kirti Saxena
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, Texas, TX, USA
- Department of Psychiatry, Texas Children’s Hospital, Houston, Texas, TX, USA
| | - Alessio Simonetti
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, Texas, TX, USA
- Department of Neuroscience, Section of Psychiatry, Fondazione Policlinico Universitario “Agostino Gemelli” IRCCS, Rome, Italy
| | - Christopher D. Verrico
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, Texas, TX, USA
| | - Delfina Janiri
- Department of Neuroscience, Section of Psychiatry, Fondazione Policlinico Universitario “Agostino Gemelli” IRCCS, Rome, Italy
- Department of Neurology and Psychiatry, Sapienza University of Rome, Rome, Italy
| | - Marco Di Nicola
- Department of Neuroscience, Section of Psychiatry, Fondazione Policlinico Universitario “Agostino Gemelli” IRCCS, Rome, Italy
- Department of Neuroscience, Section of Psychiatry, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Antonello Catinari
- Department of Neuroscience, Section of Psychiatry, Fondazione Policlinico Universitario “Agostino Gemelli” IRCCS, Rome, Italy
- Department of Neuroscience, Section of Psychiatry, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Sherin Kurian
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, Texas, TX, USA
- Department of Psychiatry, Texas Children’s Hospital, Houston, Texas, TX, USA
| | - Johanna Saxena
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, Texas, TX, USA
- Department of Psychiatry, Texas Children’s Hospital, Houston, Texas, TX, USA
| | - Benson Mwangi
- Department of Psychiatry and Behavioral Sciences, University of Texas Health Science Center, Houston, Texas, TX, USA
| | - Jair C. Soares
- Department of Psychiatry and Behavioral Sciences, University of Texas Health Science Center, Houston, Texas, TX, USA
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Simonetti A, Kurian S, Saxena J, Verrico CD, Soares JC, Sani G, Saxena K. Cognitive correlates of impulsive aggression in youth with pediatric bipolar disorder and bipolar offspring. J Affect Disord 2021; 287:387-396. [PMID: 33838473 DOI: 10.1016/j.jad.2021.03.044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 03/13/2021] [Accepted: 03/17/2021] [Indexed: 12/25/2022]
Abstract
BACKGROUND Youth with bipolar disorder (BD) and offspring of individuals with BD (BD-OFF) are characterized by higher levels of impulsive and overt aggression. The cognitive basis underlying these aggressive behaviors are not clarified in this population. The aim of this study was to investigate the relationship between cognitive alterations and aggressive behavior in youth with BD and BD-OFF. METHODS Forty-two youth with BD, 17 BD-OFF and 57 healthy controls (HCs) were administered the Modified Overt Aggression Scale (MOAS), the Cambridge Neuropsychological Test Automated Battery (CANTAB), the Young Mania Rating Scale (YMRS) and the Children's Depression Rating Scale (CDRS). Multiple linear regression analyses were performed in the three groups separately. In each group, tests scores from the CANTAB were predictors. MOAS subscale scores and MOAS total scores were dependent variables. Results are corrected for age, IQ and mood state. RESULTS Both youth with BD and BD-OFF showed positive correlations between impairment in executive functions and levels of verbal aggression. In youth with BD, altered processing of either positive and negative stimuli positively correlated with MOAS total scores, whereas in BD-OFF, such relationship was negative. CONCLUSIONS Impulsive aggressive behaviors in youth with BD arise from a combination of altered affective processing and executive dysfunction. The negative relationship between affective processing and aggression in BD-OFF suggested the presence of possible mechanisms of resilience in this population.
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Affiliation(s)
- Alessio Simonetti
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX, USA; Department of Neuroscience, Section of Psychiatry; Fondazione Policlinico Universitario "Agostino Gemelli" IRCCS, Italy; Centro Lucio Bini, Rome, Italy.
| | - Sherin Kurian
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX, USA; Department of Psychiatry, Texas Children's Hospital, Houston, TX, USA.
| | - Johanna Saxena
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX, USA; Department of Psychiatry, Texas Children's Hospital, Houston, TX, USA.
| | - Christopher D Verrico
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX, USA.
| | - Jair C Soares
- Department of Psychiatry and Behavioral Sciences, University of Texas Health Science Center, Houston, TX, USA.
| | - Gabriele Sani
- Department of Neuroscience, Section of Psychiatry; Fondazione Policlinico Universitario "Agostino Gemelli" IRCCS, Italy; Department of Neuroscience, Section of Psychiatry, Università Cattolica del Sacro Cuore, Rome, Italy.
| | - Kirti Saxena
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX, USA; Department of Psychiatry, Texas Children's Hospital, Houston, TX, USA.
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Baumann V, Birnbaum T, Breitling-Ziegler C, Tegelbeckers J, Dambacher J, Edelmann E, Bergado-Acosta JR, Flechtner HH, Krauel K. Exploration of a novel virtual environment improves memory consolidation in ADHD. Sci Rep 2020; 10:21453. [PMID: 33293595 PMCID: PMC7722922 DOI: 10.1038/s41598-020-78222-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 11/19/2020] [Indexed: 01/09/2023] Open
Abstract
Experimental evidence in rodents and humans suggests that long-term memory consolidation can be enhanced by the exploration of a novel environment presented during a vulnerable early phase of consolidation. This memory enhancing effect (behavioral tagging) is caused by dopaminergic and noradrenergic neuromodulation of hippocampal plasticity processes. In translation from animal to human research, we investigated whether behavioral tagging with novelty can be used to tackle memory problems observed in children and adolescents with attention-deficit/hyperactivity disorder (ADHD). 34 patients with ADHD and 34 typically developing participants (age 9–15 years) explored either a previously familiarized or a novel virtual environment 45 min after they had learned a list of 20 words. Participants took a free recall test both immediately after learning the word list and after 24 h. Patients who explored a familiar environment showed significantly impaired memory consolidation compared to typically developing peers. Exploration of a novel environment led to significantly better memory consolidation in children and adolescents with ADHD. However, we did not observe a beneficial effect of novel environment exploration in typically developing participants. Our data rather suggested that increased exploration of a novel environment as well as higher feelings of virtual immersion compromised memory performance in typically developing children and adolescents, which was not the case for patients with ADHD. We propose that behavioral tagging with novel virtual environments is a promising candidate to overcome ADHD related memory problems. Moreover, the discrepancy between children and adolescents with and without ADHD suggests that behavioral tagging might only be able to improve memory consolidation for weakly encoded information.
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Affiliation(s)
- Valentin Baumann
- Department of Child and Adolescent Psychiatry and Psychotherapy, University of Magdeburg, Leipziger Straße 44, 39120, Magdeburg, Germany.
| | - Thomas Birnbaum
- Department of Child and Adolescent Psychiatry and Psychotherapy, University of Magdeburg, Leipziger Straße 44, 39120, Magdeburg, Germany
| | - Carolin Breitling-Ziegler
- Department of Child and Adolescent Psychiatry and Psychotherapy, University of Magdeburg, Leipziger Straße 44, 39120, Magdeburg, Germany
| | - Jana Tegelbeckers
- Department of Neurology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Johannes Dambacher
- Department of Child and Adolescent Psychiatry and Psychotherapy, University of Magdeburg, Leipziger Straße 44, 39120, Magdeburg, Germany.,Faculty of Computer Science, University of Magdeburg, Magdeburg, Germany
| | - Elke Edelmann
- Department of Physiology, University of Kiel, Kiel, Germany.,Center for Behavioral Brain Sciences, Magdeburg, Germany
| | - Jorge R Bergado-Acosta
- Department of Pharmacology and Toxicology, University of Magdeburg, Magdeburg, Germany.,Center for Behavioral Brain Sciences, Magdeburg, Germany
| | - Hans-Henning Flechtner
- Department of Child and Adolescent Psychiatry and Psychotherapy, University of Magdeburg, Leipziger Straße 44, 39120, Magdeburg, Germany
| | - Kerstin Krauel
- Department of Child and Adolescent Psychiatry and Psychotherapy, University of Magdeburg, Leipziger Straße 44, 39120, Magdeburg, Germany.,Center for Behavioral Brain Sciences, Magdeburg, Germany
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Elias LR, Miskowiak KW, Vale AMO, Köhler CA, Kjærstad HL, Stubbs B, Kessing LV, Vieta E, Maes M, Goldstein BI, Carvalho AF. Cognitive Impairment in Euthymic Pediatric Bipolar Disorder: A Systematic Review and Meta-Analysis. J Am Acad Child Adolesc Psychiatry 2017; 56:286-296. [PMID: 28335872 DOI: 10.1016/j.jaac.2017.01.008] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 12/21/2016] [Accepted: 01/25/2017] [Indexed: 12/14/2022]
Abstract
OBJECTIVE To perform a systematic review and meta-analysis of studies investigating neurocognition in euthymic youths with bipolar disorder (BD) compared to healthy controls (HCs). METHOD A systematic literature search was conducted in the PubMed/MEDLINE, PsycINFO, and EMBASE databases from inception up until March 23, 2016, for original peer-reviewed articles that investigated neurocognition in euthymic youths with BD compared to HCs. Effect sizes (ES) for individual tests were extracted. In addition, results were grouped according to cognitive domain. This review complied with the PRISMA statement guidelines. RESULTS A total of 24 studies met inclusion criteria (N = 1,146; 510 with BD). Overall, euthymic youths with BD were significantly impaired in verbal learning, verbal memory, working memory, visual learning, and visual memory, with moderate to large ESs (Hedge's g 0.76-0.99); significant impairments were not observed for attention/vigilance, reasoning and problem solving, and/or processing speed. Heterogeneity was moderate to large (I2 ≥ 50%) for most ES estimates. Differences in the definition of euthymia across studies explained the heterogeneity in the ES estimate for verbal learning and memory. We also found evidence for other potential sources of heterogeneity in several ES estimates including co-occurring attention-deficit/hyperactivity disorder (ADHD) and anxiety disorders, and the use of medications. In addition, the use of different neuropsychological tests appeared to contribute to heterogeneity of some estimates (e.g., attention/vigilance domain). CONCLUSION Euthymic youths with BD exhibit significant cognitive dysfunction encompassing verbal learning and memory, working memory, and/or visual learning and memory domains. These data indicate that for a subset of individuals with BD, neurodevelopmental factors may contribute to cognitive dysfunction.
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Affiliation(s)
- Liana R Elias
- Translational Psychiatry Research Group Federal University of Ceará, Fortaleza, CE, Brazil
| | - Kamilla W Miskowiak
- Psychiatric Centre Copenhagen, Copenhagen University Hospital, Copenhagen, Denmark
| | - Antônio M O Vale
- Translational Psychiatry Research Group Federal University of Ceará, Fortaleza, CE, Brazil
| | - Cristiano A Köhler
- Translational Psychiatry Research Group Federal University of Ceará, Fortaleza, CE, Brazil
| | - Hanne L Kjærstad
- Psychiatric Centre Copenhagen, Copenhagen University Hospital, Copenhagen, Denmark
| | - Brendon Stubbs
- Health Service and Population Research Department, Institute of Psychiatry, King's College London, UK, and South London and Maudsley National Health Service Foundation Trust, Denmark Hill, London
| | - Lars V Kessing
- Psychiatric Centre Copenhagen, Copenhagen University Hospital, Copenhagen, Denmark
| | - Eduard Vieta
- Bipolar Disorder Program, Institute of Neuroscience, Hospital Clinic, University of Barcelona, Institut d'investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Centro para la Investigación Biomédica en Red de Salud Mental (CIBERSAM), Barcelona, Spain
| | - Michael Maes
- Chulalongkorn University, Bangkok, Thailand, and IMPACT Strategic Research Center, Barwon Health, Deakin University, Geelong, VIC, Australia
| | - Benjamin I Goldstein
- Centre for Youth Bipolar Disorder, Sunnybrook Health Sciences Centre, Toronto, Canada
| | - André F Carvalho
- Translational Psychiatry Research Group Federal University of Ceará, Fortaleza, CE, Brazil.
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Kavanaugh BC, Gaudet CE, Dupont-Frechette JA, Tellock PP, Maher ID, Haisley LD, Holler KA. Verbal Memory Abilities in Severe Childhood Psychiatric Disorders and the Influence of Attention and Executive Functions. Arch Clin Neuropsychol 2016; 31:934-943. [PMID: 27193361 DOI: 10.1093/arclin/acw020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/24/2016] [Indexed: 11/13/2022] Open
Abstract
Despite prior adult research regarding the influence of executive functions on memory performance, there has been inconsistent prior research on the role of executive functions on memory performance in children, particularly those children with severe psychiatric disorders. A medical chart review was conducted for 76 children (ages 6-12 years) who received a neuropsychological evaluation during children's psychiatric inpatient program hospitalization. A series of hierarchical regression analyses investigated the role of attention/executive and non-executive functions in verbal memory performance (immediate recall, delayed recall, and delayed recognition). Demographic and verbal measures were entered into blocks 1 and 2 for all analyses, followed by attention and executive functions (i.e., attention span, sustained attention, verbal fluency, cognitive flexibility, inhibitory control, and planning/organization). Nearly 15% of the participants displayed memory impairment. Results of regression analyses indicated attention/executive dysfunction severity predicted overall memory performance. Attention span predicted performance on all three memory conditions. Planning/organization accounted for unique variance in immediate recall condition while inhibitory control accounted for unique variance in delayed recall condition. These results indicate that verbal memory problems frequently occur in severe childhood psychiatric disorders. Further, planning/organization deficits may influence immediate recall, while inhibitory control deficits may influence delayed recall. Alternatively, delayed recognition memory may be the most resistant to the negative influence of executive deficits on verbal memory performance in childhood psychiatric disorders.
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Affiliation(s)
- Brian C Kavanaugh
- E. P. Bradley Hospital, East Providence, RI, USA.,Alpert Medical School of Brown University, East Providence, RI, USA
| | | | | | | | | | | | - Karen A Holler
- E. P. Bradley Hospital, East Providence, RI, USA.,Alpert Medical School of Brown University, East Providence, RI, USA
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McCarthy JB, Weiss SR, Segovich KT, Barbot B. Impact of psychotic symptoms on cognitive functioning in child and adolescent psychiatric inpatients with severe mood disorders. Psychiatry Res 2016; 244:223-8. [PMID: 27497293 DOI: 10.1016/j.psychres.2016.07.049] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Revised: 06/08/2016] [Accepted: 07/24/2016] [Indexed: 10/21/2022]
Abstract
Despite established differences in cognitive functioning of adults with mood disorder-related psychosis and those with non-affective psychotic disorders, there is limited evidence of the impact of psychotic symptoms on the cognitive functioning of children and adolescents with mood disorders. This study investigates IQ, working memory, and processing speed scores in 80 child and adolescent inpatients discharged from an intermediate care state psychiatric hospital, using a retrospective chart review. Associations between diagnosis based on DSM-IV criteria (7 with Major Depression- MDD; 43 with Bipolar Disorders-BD, and 30 with Mood Disorders Not Otherwise Specified-NOS), presence of current psychotic features, and cognitive functioning (WISC-IV IQ, Coding, Symbol Search, and Digit Span) were investigated using Multivariate Analyses of Variance. No differences were found in cognitive functioning between patients with MDD and BD, or between those with severe Mood Disorders (MDD or BD) and those with NOS, when controlling for age, gender, and presence of psychotic features. However, patients with severe mood disorders and psychotic features showed lower IQs and greater working memory deficits than those without psychotic features or NOS. Results are discussed in terms of treatment planning for children and adolescents at risk for developing psychotic symptoms and severe mood disorders.
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Affiliation(s)
- James B McCarthy
- Pace University, Department of Psychology, New York City, NY, United States; Adelphi University, Garden City, NY, United States.
| | - Shira R Weiss
- Sagamore Children's Psychiatric Center, Dix Hills, NY, United States
| | - Kristin T Segovich
- Pace University, Department of Psychology, New York City, NY, United States
| | - Baptiste Barbot
- Pace University, Department of Psychology, New York City, NY, United States; Yale University, Child Study Center, New Haven, CT, United States.
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Good Holders, Bad Shufflers: An Examination of Working Memory Processes and Modalities in Children with and without Attention-Deficit/Hyperactivity Disorder. J Int Neuropsychol Soc 2016; 22:1-11. [PMID: 26714882 DOI: 10.1017/s1355617715001010] [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] [Indexed: 12/22/2022]
Abstract
The aim of this study was to examine working memory (WM) modalities (visual-spatial and auditory-verbal) and processes (maintenance and manipulation) in children with and without attention-deficit/hyperactivity disorder (ADHD). The sample consisted of 63 8-year-old children with ADHD and an age- and sex-matched non-ADHD comparison group (N=51). Auditory-verbal and visual-spatial WM were assessed using the Digit Span and Spatial Span subtests from the Wechsler Intelligence Scale for Children Integrated - Fourth Edition. WM maintenance and manipulation were assessed via forward and backward span indices, respectively. Data were analyzed using a 3-way Group (ADHD vs. non-ADHD)×Modality (Auditory-Verbal vs. Visual-Spatial)×Condition (Forward vs. Backward) Analysis of Variance (ANOVA). Secondary analyses examined differences between Combined and Predominantly Inattentive ADHD presentations. Significant Group×Condition (p=.02) and Group×Modality (p=.03) interactions indicated differentially poorer performance by those with ADHD on backward relative to forward and visual-spatial relative to auditory-verbal tasks, respectively. The 3-way interaction was not significant. Analyses targeting ADHD presentations yielded a significant Group×Condition interaction (p=.009) such that children with ADHD-Predominantly Inattentive Presentation performed differentially poorer on backward relative to forward tasks compared to the children with ADHD-Combined Presentation. Findings indicate a specific pattern of WM weaknesses (i.e., WM manipulation and visual-spatial tasks) for children with ADHD. Furthermore, differential patterns of WM performance were found for children with ADHD-Predominantly Inattentive versus Combined Presentations. (JINS, 2016, 22, 1-11).
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Lera-Miguel S, Andrés-Perpiñá S, Fatjó-Vilas M, Fañanás L, Lázaro L. Two-year follow-up of treated adolescents with early-onset bipolar disorder: Changes in neurocognition. J Affect Disord 2015; 172:48-54. [PMID: 25451395 DOI: 10.1016/j.jad.2014.09.041] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Revised: 09/19/2014] [Accepted: 09/21/2014] [Indexed: 12/12/2022]
Abstract
BACKGROUND Few studies have analyzed the course of neurocognition in treated children and adolescents with early-onset bipolar disorder (EOBD) and shown improvements in attention, working memory, and verbal memory after treatment. The aim of this study was to determine the progress over two years in neuropsychological performance of a sample of medicated adolescents with EOBD compared to healthy controls (HC). METHODS Twenty adolescents, diagnosed in clinical setting as DSM-IV bipolar disorder, treated for two years, euthymic, and 20 gender and age-matched HC were assessed at two moments in reasoning, verbal and visual memory, working memory, speed, visual-motor skills and executive function. Multivariate analyses of variance was carried out to analyze the differences between groups over time, and to monitor the influence of psychotic symptoms and type of mood-stabilizer. RESULTS The entire sample improved on verbal and visual memory tests (verbal recall p<0.01; visual recall p<0.001). Moreover, patients improved more than controls in verbal reasoning (p<0.01), working memory (p<0.01), processing speed (p<0.01) and visual-motor skills (p<0.001). Psychotic symptoms and treatment with lithium were associated with poorer development in executive control tasks. LIMITATIONS Sample size was small and groups were re-evaluated in slight different follow-up periods. Doses of antipsychotics drugs over time were not controlled. CONCLUSIONS Processing speed and visual-motor skills in the EOBD group normalized during follow-up. Executive functioning, working memory, and verbal and visual memory remained impaired in patients versus controls. The knowledge of cognitive deficits due to normal course of illness or to drug effects allows better therapeutic strategies.
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Affiliation(s)
- Sara Lera-Miguel
- Department of Child and Adolescent Psychiatry and Psychology, Institute of Neurosciences, Hospital Clínic, Barcelona, Spain.
| | - Susana Andrés-Perpiñá
- Department of Child and Adolescent Psychiatry and Psychology, Institute of Neurosciences, Hospital Clínic, Barcelona, Spain; CIBERSAM, Spain; Institut d׳Investigació en Biomedicina August Pi i Sunyer, IDIBAPS, Spain
| | - Mar Fatjó-Vilas
- CIBERSAM, Spain; Institut de Biomedicina, Universitat de Barcelona, IBUB, Spain; Department of Animal Biology, Universitat de Barcelona, Spain
| | - Lourdes Fañanás
- CIBERSAM, Spain; Institut de Biomedicina, Universitat de Barcelona, IBUB, Spain; Department of Animal Biology, Universitat de Barcelona, Spain
| | - Luisa Lázaro
- Department of Child and Adolescent Psychiatry and Psychology, Institute of Neurosciences, Hospital Clínic, Barcelona, Spain; CIBERSAM, Spain; Institut d׳Investigació en Biomedicina August Pi i Sunyer, IDIBAPS, Spain; Department of Psychiatry and Clinical Psychobiology, Universitat de Barcelona, Spain
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Singh MK, Ketter T, Chang KD. Distinguishing bipolar disorder from other psychiatric disorders in children. Curr Psychiatry Rep 2014; 16:516. [PMID: 25315116 DOI: 10.1007/s11920-014-0516-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Pediatric onset bipolar disorder (BD) is a challenging diagnosis with potentially debilitating outcomes. This review aims to critically evaluate recently published literature relevant to the diagnosis of BD in youth, emphasizing interesting and important new findings characterizing pediatric BD and reporting updates in the diagnostic and statistical manual relevant to this disorder in youth. Challenges regarding the diagnosis of BD will be discussed, in addition to important distinctions with other childhood disorders, including other bipolar spectrum disorders; major depressive disorder; dysthymia; disruptive mood dysregulation disorder (DMDD); attention-deficit/hyperactivity disorder (ADHD) and other disruptive behavioral disorders; anxiety disorders, including post-traumatic stress disorder (PTSD); psychotic disorders; autism spectrum disorders; substance use disorders; and borderline personality disorder. The review concludes with a comment on past research limitations and future directions in the field.
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Affiliation(s)
- Manpreet K Singh
- Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, 401 Quarry Road, Stanford, CA, 94305-5719, USA,
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Frydecka D, Eissa AM, Hewedi DH, Ali M, Drapała J, Misiak B, Kłosińska E, Phillips JR, Moustafa AA. Impairments of working memory in schizophrenia and bipolar disorder: the effect of history of psychotic symptoms and different aspects of cognitive task demands. Front Behav Neurosci 2014; 8:416. [PMID: 25506320 PMCID: PMC4246891 DOI: 10.3389/fnbeh.2014.00416] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Accepted: 11/13/2014] [Indexed: 11/13/2022] Open
Abstract
Comparisons of cognitive impairments between schizophrenia (SZ) and bipolar disorder (BPD) have produced mixed results. We applied different working memory (WM) measures (Digit Span Forward and Backward, Short-delay and Long-delay CPT-AX, N-back) to patients with SZ (n = 23), psychotic BPD (n = 19) and non-psychotic BPD (n = 24), as well as to healthy controls (HC) (n = 18) in order to compare the level of WM impairments across the groups. With respect to the less demanding WM measures (Digit Span Forward and Backward, Short-delay CPT-AX), there were no between group differences in cognitive performance; however, with respect to the more demanding WM measures (Long-delay CPT-AX, N-back), we observed that the groups with psychosis (SZ, psychotic BPD) did not differ from one another, but performed poorer than the group without a history of psychosis (non-psychotic BPD). A history of psychotic symptoms may influence cognitive performance with respect to WM delay and load effects as measured by Long-delay CPT-AX and N-back tests, respectively. We observed a positive correlation of WM performance with antipsychotic treatment and a negative correlation with depressive symptoms in BPD and with negative symptoms in SZ subgroup. Our study suggests that WM dysfunctions are more closely related to a history of psychosis than to the diagnostic categories of SZ and BPD described by psychiatric classification systems.
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Affiliation(s)
- Dorota Frydecka
- Department and Clinic of Psychiatry, Wroclaw Medical University Wroclaw, Poland
| | - Abeer M Eissa
- Faculty of Medicine, Psychogeriatric Research Center, Institute of Psychiatry, Ain Shams University Cairo, Egypt
| | - Doaa H Hewedi
- Faculty of Medicine, Psychogeriatric Research Center, Institute of Psychiatry, Ain Shams University Cairo, Egypt
| | - Manal Ali
- Faculty of Medicine, Psychogeriatric Research Center, Institute of Psychiatry, Ain Shams University Cairo, Egypt
| | - Jarosław Drapała
- Institute of Computer Science, Wroclaw University of Technology Wroclaw, Poland
| | - Błażej Misiak
- Department and Clinic of Psychiatry, Wroclaw Medical University Wroclaw, Poland ; Department of Genetics, Wroclaw Medical University Wroclaw, Poland
| | - Ewa Kłosińska
- Department and Clinic of Psychiatry, Wroclaw Medical University Wroclaw, Poland
| | - Joseph R Phillips
- School of Social Sciences and Psychology, Marcs Institute for Brain and Behaviour, University of Western Sydney Sydney, NSW, Australia
| | - Ahmed A Moustafa
- School of Social Sciences and Psychology, Marcs Institute for Brain and Behaviour, University of Western Sydney Sydney, NSW, Australia
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Neurocognitive impairments among youth with pediatric bipolar disorder: a systematic review of neuropsychological research. J Affect Disord 2014; 166:297-306. [PMID: 25012445 DOI: 10.1016/j.jad.2014.05.025] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Revised: 05/18/2014] [Accepted: 05/19/2014] [Indexed: 12/23/2022]
Abstract
BACKGROUND Pediatric bipolar disorder (PBD) has emerged as a field of research in which neuropsychological studies are continuously providing new empirical findings. Despite this, a comprehensive framework for neurocognitive impairments is still lacking, and most of the evidence remains unconnected. We addressed this question through a systematic review of neuropsychological research, with the aim of elucidating the main issues concerning this topic. METHOD A comprehensive search of databases (PubMed, PsycINFO) was performed. Published manuscripts between 1990 and January 2014 were identified. Overall, 124 studies fulfilled inclusion criteria. Methodological differences between studies required a descriptive review of findings. RESULTS Evidence indicates that verbal/visual-spatial memory, processing speed, working memory, and social cognition are neurocognitive domains impaired in PBD youth. Furthermore, these deficits are greater among those who suffer acute affective symptoms, PBD type I, and/or attention deficit hyperactivity disorder (ADHD) comorbidity. In addition, several neurocognitive deficits imply certain changes in prefrontal cortex activity and are somewhat associated with psychosocial and academic disabilities. Strikingly, these deficits are consistently similar to those encountered in ADHD as well as severe mood dysregulation (SMD). Besides, some neurocognitive impairments appear before the onset of the illness and tend to maintain stable across adolescence. Finally, any therapy has not yet demonstrated to be effective on diminishing these neurocognitive impairments. LIMITATIONS More prolonged follow-up studies aimed at delineating the course of treatment and the response to it are warranted. CONCLUSIONS Despite noteworthy research on the neurocognitive profile of PBD, our knowledge is still lagging behind evidence from adult counterparts.
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McIntyre RS, Cha DS, Jerrell JM, Swardfager W, Kim RD, Costa LG, Baskaran A, Soczynska JK, Woldeyohannes HO, Mansur RB, Brietzke E, Powell AM, Gallaugher A, Kudlow P, Kaidanovich-Beilin O, Alsuwaidan M. Advancing biomarker research: utilizing 'Big Data' approaches for the characterization and prevention of bipolar disorder. Bipolar Disord 2014; 16:531-47. [PMID: 24330342 DOI: 10.1111/bdi.12162] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Accepted: 10/22/2013] [Indexed: 01/01/2023]
Abstract
OBJECTIVE To provide a strategic framework for the prevention of bipolar disorder (BD) that incorporates a 'Big Data' approach to risk assessment for BD. METHODS Computerized databases (e.g., Pubmed, PsychInfo, and MedlinePlus) were used to access English-language articles published between 1966 and 2012 with the search terms bipolar disorder, prodrome, 'Big Data', and biomarkers cross-referenced with genomics/genetics, transcriptomics, proteomics, metabolomics, inflammation, oxidative stress, neurotrophic factors, cytokines, cognition, neurocognition, and neuroimaging. Papers were selected from the initial search if the primary outcome(s) of interest was (were) categorized in any of the following domains: (i) 'omics' (e.g., genomics), (ii) molecular, (iii) neuroimaging, and (iv) neurocognitive. RESULTS The current strategic approach to identifying individuals at risk for BD, with an emphasis on phenotypic information and family history, has insufficient predictive validity and is clinically inadequate. The heterogeneous clinical presentation of BD, as well as its pathoetiological complexity, suggests that it is unlikely that a single biomarker (or an exclusive biomarker approach) will sufficiently augment currently inadequate phenotypic-centric prediction models. We propose a 'Big Data'- bioinformatics approach that integrates vast and complex phenotypic, anamnestic, behavioral, family, and personal 'omics' profiling. Bioinformatic processing approaches, utilizing cloud- and grid-enabled computing, are now capable of analyzing data on the order of tera-, peta-, and exabytes, providing hitherto unheard of opportunities to fundamentally revolutionize how psychiatric disorders are predicted, prevented, and treated. High-throughput networks dedicated to research on, and the treatment of, BD, integrating both adult and younger populations, will be essential to sufficiently enroll adequate samples of individuals across the neurodevelopmental trajectory in studies to enable the characterization and prevention of this heterogeneous disorder. CONCLUSIONS Advances in bioinformatics using a 'Big Data' approach provide an opportunity for novel insights regarding the pathoetiology of BD. The coordinated integration of research centers, inclusive of mixed-age populations, is a promising strategic direction for advancing this line of neuropsychiatric research.
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Affiliation(s)
- Roger S McIntyre
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada; Department of Pharmacology, University of Toronto, Toronto, ON, Canada; Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, ON, Canada; Institute of Medical Science, University of Toronto, Toronto, ON, Canada
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