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Kirstin S, Matthias G, Valetin B, Valerie S, Andrea F, Nedelina S, Claus K, Jochen R, Regula E. Cerebral blood flow and structural connectivity after working memory or physical training in paediatric cancer survivors - Exploratory findings. Neuropsychol Rehabil 2024:1-27. [PMID: 38809147 DOI: 10.1080/09602011.2024.2356294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 05/10/2024] [Indexed: 05/30/2024]
Abstract
Paediatric cancer survivors often suffer from cognitive long-term difficulties. Consequently, strengthening cognition is of major clinical relevance. This study investigated cerebral changes in relation to cognition in non-brain tumour paediatric cancer survivors after working memory or physical training compared to a control group. Thirty-four children (≥one-year post-treatment) either underwent eight weeks of working memory training (n = 10), physical training (n = 11), or a waiting period (n = 13). Cognition and MRI, including arterial spin labelling and diffusion tensor imaging, were assessed at three time points (baseline, post-training, and three-month follow-up). Results show lower cerebral blood flow immediately after working memory training (z = -2.073, p = .038) and higher structural connectivity at the three-month follow-up (z = -2.240, p = .025). No cerebral changes occurred after physical training. Short-term changes in cerebral blood flow correlated with short-term changes in cognitive flexibility (r = -.667, p = .049), while long-term changes in structural connectivity correlated with long-term changes in working memory (r = .786, p = .021). Despite the caution given when interpreting data from small samples, this study suggests a link between working memory training and neurophysiological changes. Further research is needed to validate these findings.
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Affiliation(s)
- Schuerch Kirstin
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Division of Neuropediatrics, Development and Rehabilitation, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Graduate School for Health Science, University of Bern, Bern, Switzerland
- Translational Research Center, University Hospital of Psychiatry and Psychotherapy, University of Bern, Bern, Switzerland
| | - Grieder Matthias
- Translational Research Center, University Hospital of Psychiatry and Psychotherapy, University of Bern, Bern, Switzerland
| | - Benzing Valetin
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Division of Neuropediatrics, Development and Rehabilitation, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Institute of Sport Science, University of Bern, Bern, Switzerland
| | - Siegwart Valerie
- Division of Neuropediatrics, Development and Rehabilitation, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Federspiel Andrea
- Support Center for Advanced Neuroimaging (SCAN), Department of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, and University of Bern, Bern, Switzerland
| | - Slavova Nedelina
- Support Center for Advanced Neuroimaging (SCAN), Department of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, and University of Bern, Bern, Switzerland
| | - Kiefer Claus
- Support Center for Advanced Neuroimaging (SCAN), Department of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, and University of Bern, Bern, Switzerland
| | - Roessler Jochen
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Everts Regula
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Division of Neuropediatrics, Development and Rehabilitation, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
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Zou P, Wu C, Liu TCY, Duan R, Yang L. Oligodendrocyte progenitor cells in Alzheimer's disease: from physiology to pathology. Transl Neurodegener 2023; 12:52. [PMID: 37964328 PMCID: PMC10644503 DOI: 10.1186/s40035-023-00385-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 11/01/2023] [Indexed: 11/16/2023] Open
Abstract
Oligodendrocyte progenitor cells (OPCs) play pivotal roles in myelin formation and phagocytosis, communicating with neighboring cells and contributing to the integrity of the blood-brain barrier (BBB). However, under the pathological circumstances of Alzheimer's disease (AD), the brain's microenvironment undergoes detrimental changes that significantly impact OPCs and their functions. Starting with OPC functions, we delve into the transformation of OPCs to myelin-producing oligodendrocytes, the intricate signaling interactions with other cells in the central nervous system (CNS), and the fascinating process of phagocytosis, which influences the function of OPCs and affects CNS homeostasis. Moreover, we discuss the essential role of OPCs in BBB formation and highlight the critical contribution of OPCs in forming CNS-protective barriers. In the context of AD, the deterioration of the local microenvironment in the brain is discussed, mainly focusing on neuroinflammation, oxidative stress, and the accumulation of toxic proteins. The detrimental changes disturb the delicate balance in the brain, impacting the regenerative capacity of OPCs and compromising myelin integrity. Under pathological conditions, OPCs experience significant alterations in migration and proliferation, leading to impaired differentiation and a reduced ability to produce mature oligodendrocytes. Moreover, myelin degeneration and formation become increasingly active in AD, contributing to progressive neurodegeneration. Finally, we summarize the current therapeutic approaches targeting OPCs in AD. Strategies to revitalize OPC senescence, modulate signaling pathways to enhance OPC differentiation, and explore other potential therapeutic avenues are promising in alleviating the impact of AD on OPCs and CNS function. In conclusion, this review highlights the indispensable role of OPCs in CNS function and their involvement in the pathogenesis of AD. The intricate interplay between OPCs and the AD brain microenvironment underscores the complexity of neurodegenerative diseases. Insights from studying OPCs under pathological conditions provide a foundation for innovative therapeutic strategies targeting OPCs and fostering neurodegeneration. Future research will advance our understanding and management of neurodegenerative diseases, ultimately offering hope for effective treatments and improved quality of life for those affected by AD and related disorders.
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Affiliation(s)
- Peibin Zou
- Laboratory of Exercise and Neurobiology, School of Physical Education and Sports Science, South China Normal University, Guangzhou, 510006, China
- Department of Neurology, Louisiana State University Health Sciences Center, 1501 Kings Highway, Shreveport, LA, 71103, USA
| | - Chongyun Wu
- Laboratory of Exercise and Neurobiology, School of Physical Education and Sports Science, South China Normal University, Guangzhou, 510006, China
| | - Timon Cheng-Yi Liu
- Laboratory of Exercise and Neurobiology, School of Physical Education and Sports Science, South China Normal University, Guangzhou, 510006, China
| | - Rui Duan
- Laboratory of Exercise and Neurobiology, School of Physical Education and Sports Science, South China Normal University, Guangzhou, 510006, China
| | - Luodan Yang
- Laboratory of Exercise and Neurobiology, School of Physical Education and Sports Science, South China Normal University, Guangzhou, 510006, China.
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Abstract
Within the past decade, multiple lines of evidence have converged to identify a critical role for activity-regulated myelination in tuning the function of neural networks. In this Review, we provide an overview of accumulating evidence that activity-regulated myelination is required for brain adaptation and learning across multiple domains. We then discuss dysregulation of activity-dependent myelination in the context of neurological disease, a novel frontier with the potential to uncover new mechanisms of disease pathogenesis and to develop new therapeutic strategies. Alterations in myelination and neural network function can result from deficient myelin plasticity that impairs neurological function or from maladaptive myelination, in which intact activity-dependent myelination contributes to the disease process by promoting pathological patterns of neuronal activity. These emerging mechanisms suggest new avenues for therapeutic intervention that could more fully address the complex interactions between neurons and oligodendroglia.
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Hordijk JA, Verbruggen SC, Buysse CM, Utens EM, Joosten KF, Dulfer K. Neurocognitive functioning and health-related quality of life of children after pediatric intensive care admission: a systematic review. Qual Life Res 2022; 31:2601-2614. [PMID: 35357629 PMCID: PMC9356943 DOI: 10.1007/s11136-022-03124-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/12/2022] [Indexed: 11/28/2022]
Abstract
OBJECTIVE This study systematically reviewed recent findings on neurocognitive functioning and health-related quality of life (HRQoL) of children after pediatric intensive care unit admission (PICU). DATA SOURCES Electronic databases searched included Embase, Medline Ovid, Web of Science, Cochrane CENTRAL, and Google Scholar. The search was limited to studies published in the last five years (2015-2019). STUDY SELECTION Original studies assessing neurocognitive functioning or HRQoL in children who were previously admitted to the PICU were included in this systematic review. DATA EXTRACTION Of the 3649 identified studies, 299 met the inclusion criteria based on title abstract screening. After full-text screening, 75 articles were included in the qualitative data reviewing: 38 on neurocognitive functioning, 33 on HRQoL, and 4 on both outcomes. DATA SYNTHESIS Studies examining neurocognitive functioning found overall worse scores for general intellectual functioning, attention, processing speed, memory, and executive functioning. Studies investigating HRQoL found overall worse scores for both physical and psychosocial HRQoL. On the short term (≤ 12 months), most studies reported HRQoL impairments, whereas in some long-term studies HRQoL normalized. The effectiveness of the few intervention studies during and after PICU admission on long-term outcomes varied. CONCLUSIONS PICU survivors have lower scores for neurocognitive functioning and HRQoL than children from the general population. A structured follow-up program after a PICU admission is needed to identify those children and parents who are at risk. However, more research is needed into testing interventions in randomized controlled trials aiming on preventing or improving impairments in critically ill children during and after PICU admission.
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Affiliation(s)
- José A Hordijk
- Intensive Care, Department of Pediatrics and Pediatric Surgery, Erasmus MC - Sophia Children's Hospital, Dr. Molewaterplein 60, 3015 GJ, Rotterdam, The Netherlands
| | - Sascha C Verbruggen
- Intensive Care, Department of Pediatrics and Pediatric Surgery, Erasmus MC - Sophia Children's Hospital, Dr. Molewaterplein 60, 3015 GJ, Rotterdam, The Netherlands
| | - Corinne M Buysse
- Intensive Care, Department of Pediatrics and Pediatric Surgery, Erasmus MC - Sophia Children's Hospital, Dr. Molewaterplein 60, 3015 GJ, Rotterdam, The Netherlands
| | - Elisabeth M Utens
- Research Institute of Child Development and Education, University of Amsterdam, Nieuwe Achtergracht 127, 1018 WS, Amsterdam, The Netherlands.,Academic Center for Child Psychiatry the Bascule/Department of Child and Adolescent Psychiatry, Academic Medical Center, Rijksstraatweg 145, 1115 AP, Amsterdam, The Netherlands.,Department of Child and Adolescent Psychiatry/Psychology, Erasmus MC - Sophia Children's Hospital, Wytemaweg 8, 3015 CN, Rotterdam, The Netherlands
| | - Koen F Joosten
- Intensive Care, Department of Pediatrics and Pediatric Surgery, Erasmus MC - Sophia Children's Hospital, Dr. Molewaterplein 60, 3015 GJ, Rotterdam, The Netherlands
| | - Karolijn Dulfer
- Intensive Care, Department of Pediatrics and Pediatric Surgery, Erasmus MC - Sophia Children's Hospital, Dr. Molewaterplein 60, 3015 GJ, Rotterdam, The Netherlands.
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Wu Z, Liu Q, Zhang Y, Guan X, Xiu M, Zhang X. Superoxide Dismutase, BDNF, and Cognitive Improvement in Drug-Naive First-Episode Patients With Schizophrenia: A 12-Week Longitudinal Study. Int J Neuropsychopharmacol 2021; 25:128-135. [PMID: 34622272 PMCID: PMC8832226 DOI: 10.1093/ijnp/pyab065] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 09/13/2021] [Accepted: 10/02/2021] [Indexed: 12/18/2022] Open
Abstract
OBJECTIVE Cognitive improvement after antipsychotic agents in patients with schizophrenia (SCZ) appears to involve redox regulation through neurotrophins such as brain derived neurotropic factor (BDNF). This study examined whether cognitive improvement was associated with the increase in superoxide dismutase (SOD) and whether higher levels of BDNF could have a permissive role in allowing SOD to improve cognition. METHODS We examined this hypothesis in 183 drug-naïve first-episode SCZ patients taking risperidone monotherapy for 12 weeks. We measured total copper-zinc SOD (CuZn-SOD), manganese SOD (Mn-SOD), and SOD activities and BDNF levels in these patients and compared their levels with 152 healthy controls. We assessed cognitive functioning and clinical symptoms at baseline and 12-week follow-up. RESULTS After treatment with risperidone, CuZn-SOD activity was significantly increased, and BDNF levels were slightly increased. Increased CuZn-SOD activity was associated with the cognitive effectiveness of risperidone monotherapy. The BDNF levels and SOD activities were correlated at baseline but not after 12-week treatment. Furthermore, baseline CuZn-SOD activity positively correlated with improvement on the delayed memory subscale of the Repeatable Battery for the Assessment of Neuropsychological Status only in the high BDNF subgroup. CONCLUSIONS Our longitudinal study suggests that risperidone can enhance SOD activity and that, in combination with higher baseline BDNF levels acting in a permissive role, can improve cognitive impairments in SCZ. Greater baseline CuZn-SOD activity also may have predictive value for cognitive improvement of delayed memory in SCZ patients receiving risperidone treatment.
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Affiliation(s)
- Zhiwei Wu
- Department of Psychiatry, Shenzhen Kangning Hospital; Shenzhen Mental Health Center, Shenzhen, Guangdong, China
| | - Qinqin Liu
- Qingdao Mental Health Center, Qingdao, Shandong, China
| | - Yinghua Zhang
- Department of Psychiatry, Shenzhen Kangning Hospital; Shenzhen Mental Health Center, Shenzhen, Guangdong, China
| | - Xiaoni Guan
- Peking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Beijing, China
| | - Meihong Xiu
- Peking University HuiLongGuan Clinical Medical School, Beijing HuiLongGuan Hospital, Beijing, China,Correspondence: Mei Hong Xiu, PhD, Changping District, Beijing, 100096, China ()
| | - Xiangyang Zhang
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China
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Ijsselstijn H, Schiller RM, Holder C, Shappley RKH, Wray J, Hoskote A. Extracorporeal Life Support Organization (ELSO) Guidelines for Follow-up After Neonatal and Pediatric Extracorporeal Membrane Oxygenation. ASAIO J 2021; 67:955-963. [PMID: 34324443 DOI: 10.1097/mat.0000000000001525] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Neonates and children who have survived critical illness severe enough to require extracorporeal membrane oxygenation (ECMO) are at risk for neurologic insults, neurodevelopmental delays, worsening of underlying medical conditions, and development of new medical comorbidities. Structured neurodevelopmental follow-up is recommended for early identification and prompt interventions of any neurodevelopmental delays. Even children who initially survive this critical illness without new medical or neurologic deficits remain at risk of developing new morbidities/delays at least through adolescence, highlighting the importance of structured follow-up by personnel knowledgeable in the sequelae of critical illness and ECMO. Structured follow-up should be multifaceted, beginning predischarge and continuing as a coordinated effort after discharge through adolescence. Predischarge efforts should consist of medical and neurologic evaluations, family education, and co-ordination of long-term ECMO care. After discharge, programs should recommend a compilation of pediatric care, disease-specific care for underlying or acquired conditions, structured ECMO/neurodevelopmental care including school performance, parental education, and support. Institutionally, regionally, and internationally available resources will impact the design of individual center's follow-up program. Additionally, neurodevelopmental testing will need to be culturally and lingually appropriate for centers' populations. Thus, ECMO centers should adapt follow-up program to their specific populations and resources with the predischarge and postdischarge components described here.
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Affiliation(s)
- Hanneke Ijsselstijn
- From the Department of Intensive Care and Pediatric Surgery, Erasmus MC-Sophia Children's Hospital University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Raisa M Schiller
- Department of Pediatric Surgery/IC Children and Child and Adolescent Psychiatry/Psychology, Erasmus MC-Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Christen Holder
- Division of Neurosciences, Le Bonheur Children's Hospital, University of Tennessee Health Science Center, Memphis, Tennessee
| | - Rebekah K H Shappley
- Division of Pediatric Critical Care, Le Bonheur Children's Hospital, University of Tennessee Health Science Center, Memphis, Tennessee
| | - Jo Wray
- Heart and Lung Directorate, Great Ormond Street Hospital for Children NHS Foundation Trust and NIHR Great Ormond Street Hospital Biomedical Research Centre, London, United Kingdom
| | - Aparna Hoskote
- Heart and Lung Directorate, Great Ormond Street Hospital for Children NHS Foundation Trust and NIHR Great Ormond Street Hospital Biomedical Research Centre, London, United Kingdom
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7
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van Hoorn CE, ten Kate CA, Rietman AB, Toussaint-Duyster LCC, Stolker RJ, Wijnen RMH, de Graaff JC. Long-term neurodevelopment in children born with esophageal atresia: a systematic review. Dis Esophagus 2021; 34:6347567. [PMID: 34378009 PMCID: PMC8597907 DOI: 10.1093/dote/doab054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 04/29/2021] [Accepted: 06/27/2021] [Indexed: 12/11/2022]
Abstract
BACKGROUND Although the survival rate of esophageal atresia (EA) has increased to over 90%, the risk of functional long-term neurodevelopmental deficits is uncertain. Studies on long-term outcomes of children with EA show conflicting results. Therefore, we provide an overview of the current knowledge on the long-term neurodevelopmental outcome of children with EA. METHODS We performed a structured literature search in Embase, Medline Ovid, Web of Science, Cochrane CENTRAL, and Google scholar on November 8, 2020 with the keywords 'esophageal atresia', 'long-term outcome', 'motor development', 'cognitive development', and 'neurodevelopment'. RESULTS The initial search identified 945 studies, of which 15 were included. Five of these published outcomes of multiple tests or tested at multiple ages. Regarding infants, one of six studies found impaired neurodevelopment at 1 year of age. Regarding preschoolers, two of five studies found impaired neurodevelopment; the one study assessing cognitive development found normal cognitive outcome. Both studies on motor function reported impairment. Regarding school-agers, the one study on neurodevelopmental outcome reported impairment. Cognitive impairment was found in two out of four studies, and motor function was impaired in both studies studying motor function. CONCLUSIONS Long-term neurodevelopment of children born with EA has been assessed with various instruments, with contrasting results. Impairments were mostly found in motor function, but also in cognitive performance. Generally, the long-term outcome of these children is reason for concern. Structured, multidisciplinary long-term follow-up programs for children born with EA would allow to timely detect neurodevelopmental impairments and to intervene, if necessary.
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Affiliation(s)
- Camille E van Hoorn
- Address correspondence to: Camille E. van Hoorn, Erasmus Medical Centre-Sophia Children’s Hospital, Department of Anaesthesiology, Department of Paediatric Surgery, PO Box: 2060, 3000 CB Rotterdam, The Netherlands. Tel: +31 636400488;
| | - Chantal A ten Kate
- Department of Paediatric Surgery, Erasmus MC-Sophia Children’s Hospital University Medical Centre, Rotterdam, The Netherlands
| | - Andre B Rietman
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus MC-Sophia Children’s Hospital University Medical Centre, Rotterdam, The Netherlands, and
| | - Leontien C C Toussaint-Duyster
- Department of Orthopaedics, Section of Physical Therapy, Erasmus MC-Sophia Children’s Hospital University Medical Centre, Rotterdam, The Netherlands
| | - Robert Jan Stolker
- Department of Anaesthesiology, Erasmus MC-Sophia Children’s Hospital University Medical Centre, Rotterdam, The Netherlands
| | - Rene M H Wijnen
- Department of Paediatric Surgery, Erasmus MC-Sophia Children’s Hospital University Medical Centre, Rotterdam, The Netherlands
| | - Jurgen C de Graaff
- Department of Anaesthesiology, Erasmus MC-Sophia Children’s Hospital University Medical Centre, Rotterdam, The Netherlands
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Bharadwaj SV, Yeatts P, Headley J. Efficacy of cogmed working memory training program in improving working memory in school-age children with and without neurological insults or disorders: A meta-analysis. APPLIED NEUROPSYCHOLOGY-CHILD 2021; 11:891-903. [PMID: 34085876 DOI: 10.1080/21622965.2021.1920943] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
This meta-analysis assessed the efficacy of the Cogmed Working Memory Training program in improving near-transfer measures (verbal and visuospatial working memory) and far-transfer measures (attention, executive function, and academic achievement) in school-age children with and without neurological insults or disorders. Relevant studies were searched in databases and clinical trial registries using the keyword Cogmed. Ten published studies and unpublished data from one study met the inclusion criteria. Hedges g was calculated for each outcome measure obtained at pre-intervention, post-intervention, and 3-6 month time points. Analysis compared outcome measures in the control versus experimental groups and examined the role of moderators on treatment effects (control group intervention, intervention environment). Data revealed significant medium-size effects of the Cogmed program in improving verbal and visuospatial working memory post-intervention and for verbal working memory only at the 3-6 month time point. However, the training did not generalize to the far-transfer measures. Analyses indicated that only the type of intervention provided for the control group moderated treatment effects on verbal and visual working memory. Meta-analytic findings suggest that the Cogmed program leads to short-term improvements and in some cases, long-term improvements in working memory in school-age children; however, these effects may not generalize to far-transfer measures.
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Affiliation(s)
- Sneha V Bharadwaj
- Department of Communication Sciences and Oral Health, Texas Woman's University, Denton, Texas, USA
| | - Paul Yeatts
- Center for Research Design & Analysis, Office of Research and Sponsored Programs, Texas Woman's University, Denton, Texas, USA
| | - Johnna Headley
- Department of Communication Sciences and Oral Health, Texas Woman's University, Denton, Texas, USA
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Kelly CE, Harding R, Lee KJ, Pascoe L, Josev EK, Spencer-Smith MM, Adamson C, Beare R, Nosarti C, Roberts G, Doyle LW, Seal ML, Thompson DK, Anderson PJ. Investigating the brain structural connectome following working memory training in children born extremely preterm or extremely low birth weight. J Neurosci Res 2021; 99:2340-2350. [PMID: 33624327 DOI: 10.1002/jnr.24818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 02/06/2021] [Indexed: 11/07/2022]
Abstract
Children born extremely preterm (EP, <28 weeks' gestation) or extremely low birth weight (ELBW, <1,000 g) are a vulnerable population at high risk of working memory impairments. We aimed to examine changes in the brain structural connectivity networks thought to underlie working memory performance, after completion of a working memory training program (Cogmed) compared with a placebo program in EP/ELBW children. This was a double-blind, placebo-controlled randomized trial (the Improving Memory in a Preterm Randomised Intervention Trial). Children born EP/ELBW received either the Cogmed or placebo program at 7 years of age (n = 91). A subset of children had magnetic resonance imaging of the brain immediately pre- and 2 weeks post-training (Cogmed n = 28; placebo n = 27). T1 -weighted and diffusion-weighted images were used to perform graph theoretical analysis of structural connectivity networks. Changes from pre-training to post-training in structural connectivity metrics were generally similar between randomized groups. There was little evidence that changes in structural connectivity metrics were related to changes in working memory performance from pre- to post-training. Overall, our results provide little evidence that the Cogmed working memory training program has training-specific effects on structural connectivity networks in EP/ELBW children.
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Affiliation(s)
- Claire E Kelly
- Victorian Infant Brain Studies (VIBeS), Murdoch Children's Research Institute, Melbourne, VIC, Australia.,Developmental Imaging, Murdoch Children's Research Institute, Melbourne, VIC, Australia
| | - Rebecca Harding
- Victorian Infant Brain Studies (VIBeS), Murdoch Children's Research Institute, Melbourne, VIC, Australia
| | - Katherine J Lee
- Victorian Infant Brain Studies (VIBeS), Murdoch Children's Research Institute, Melbourne, VIC, Australia.,Department of Paediatrics, The University of Melbourne, Melbourne, VIC, Australia.,Clinical Epidemiology & Biostatistics Unit, Murdoch Children's Research Institute, Melbourne, VIC, Australia
| | - Leona Pascoe
- Victorian Infant Brain Studies (VIBeS), Murdoch Children's Research Institute, Melbourne, VIC, Australia.,Turner Institute for Brain and Mental Health and School of Psychological Sciences, Monash University, Melbourne, VIC, Australia
| | - Elisha K Josev
- Victorian Infant Brain Studies (VIBeS), Murdoch Children's Research Institute, Melbourne, VIC, Australia.,Department of Paediatrics, The University of Melbourne, Melbourne, VIC, Australia.,Neurodisability and Rehabilitation, Murdoch Children's Research Institute, Melbourne, VIC, Australia
| | - Megan M Spencer-Smith
- Victorian Infant Brain Studies (VIBeS), Murdoch Children's Research Institute, Melbourne, VIC, Australia.,Turner Institute for Brain and Mental Health and School of Psychological Sciences, Monash University, Melbourne, VIC, Australia
| | - Chris Adamson
- Developmental Imaging, Murdoch Children's Research Institute, Melbourne, VIC, Australia
| | - Richard Beare
- Developmental Imaging, Murdoch Children's Research Institute, Melbourne, VIC, Australia
| | - Chiara Nosarti
- Centre for the Developing Brain, Department of Perinatal Imaging and Health, School of Biomedical Engineering & Imaging Sciences, King's College London, London, UK
| | - Gehan Roberts
- Department of Paediatrics, The University of Melbourne, Melbourne, VIC, Australia.,Health Services, Population Health, Murdoch Children's Research Institute, Melbourne, VIC, Australia.,Centre for Community Child Health, The Royal Children's Hospital, Melbourne, VIC, Australia
| | - Lex W Doyle
- Victorian Infant Brain Studies (VIBeS), Murdoch Children's Research Institute, Melbourne, VIC, Australia.,Department of Paediatrics, The University of Melbourne, Melbourne, VIC, Australia.,Newborn Research, The Royal Women's Hospital, Melbourne, VIC, Australia.,Department of Obstetrics and Gynaecology, The University of Melbourne, Melbourne, VIC, Australia
| | - Marc L Seal
- Developmental Imaging, Murdoch Children's Research Institute, Melbourne, VIC, Australia.,Department of Paediatrics, The University of Melbourne, Melbourne, VIC, Australia
| | - Deanne K Thompson
- Victorian Infant Brain Studies (VIBeS), Murdoch Children's Research Institute, Melbourne, VIC, Australia.,Developmental Imaging, Murdoch Children's Research Institute, Melbourne, VIC, Australia.,Department of Paediatrics, The University of Melbourne, Melbourne, VIC, Australia.,Florey Institute of Neuroscience and Mental Health, Melbourne, VIC, Australia
| | - Peter J Anderson
- Victorian Infant Brain Studies (VIBeS), Murdoch Children's Research Institute, Melbourne, VIC, Australia.,Turner Institute for Brain and Mental Health and School of Psychological Sciences, Monash University, Melbourne, VIC, Australia
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10
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Wu ZW, Shi H, Chen DC, Chen S, Xiu MH, Zhang XY. BDNF serum levels and cognitive improvement in drug-naive first episode patients with schizophrenia: A prospective 12-week longitudinal study. Psychoneuroendocrinology 2020; 122:104879. [PMID: 33049658 DOI: 10.1016/j.psyneuen.2020.104879] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 09/13/2020] [Accepted: 09/14/2020] [Indexed: 12/11/2022]
Abstract
Abnormal brain-derived neurotrophic factor (BDNF) levels are involved in cognitive decline in patients with schizophrenia. The role of atypical antipsychotic risperidone in improving cognitive function remains unclear. The study aimed to investigate the effect of risperidone monotherapy on cognitive impairment in drug-naïve first-episode (DNFE) patients with schizophrenia and whether BDNF levels were correlated to the improvement of cognition. 354 DNFE patients and 152 healthy controls were recruited, and we compared their serum BDNF levels and cognition shown on the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS). High and low BDNF subgroups were defined by median split. Then, 211 patients were treated with risperidone monotherapy for 12 weeks, and their serum BDNF levels and cognition were measured again after treatment. DNFE patients had poorer cognitive functions and lower BDNF levels compared to controls. Lower BDNF levels were correlated with delayed memory in DNFE patients with high baseline BDNF levels. After 12 weeks of treatment, risperidone significantly improved immediate memory, delayed memory and RBANS total scores and BDNF levels were slightly increased. In patients with low-BDNF, BDNF levels were significantly increased after risperidone treatment, while in patients with high-BDNF, BDNF levels were significantly decreased. In addition, baseline BDNF levels were associated with improvement of delayed memory and were a prognostic factor for the improvement of the delayed memory and RBANS total score in patients with high-BDNF. Our result suggests risperidone treatment can partially improve certain domains of the cognitive impairment and baseline BDNF levels are related to cognitive response to risperidone in DNFE patients with schizophrenia.
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Affiliation(s)
- Zhi Wei Wu
- Department of Psychiatry, Shenzhen Kangning Hospital, Shenzhen, Guangdong, China; Shenzhen Mental Health Center, Shenzhen, Guangdong, China
| | - Hui Shi
- Department of clinial psychology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Da Chun Chen
- Beijing HuiLongGuan Hospital, Peking University HuiLongGuan Clinical Medical School, Beijing, China
| | - Song Chen
- Beijing HuiLongGuan Hospital, Peking University HuiLongGuan Clinical Medical School, Beijing, China
| | - Mei Hong Xiu
- Beijing HuiLongGuan Hospital, Peking University HuiLongGuan Clinical Medical School, Beijing, China.
| | - Xiang Yang Zhang
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China.
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Schiller RM, Tibboel D. Neurocognitive Outcome After Treatment With(out) ECMO for Neonatal Critical Respiratory or Cardiac Failure. Front Pediatr 2019; 7:494. [PMID: 31850291 PMCID: PMC6902043 DOI: 10.3389/fped.2019.00494] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 11/13/2019] [Indexed: 01/11/2023] Open
Abstract
Over the years, it has become clear that children growing up after neonatal critical illness are at high risk of long-term neurocognitive deficits that impact their school performance and daily life activities. Although the pathophysiological mechanisms remain largely unknown, emerging evidence seems to suggest that long-term neuropsychological deficits following neonatal critical illness are not associated with the type of treatment, such as extracorporeal membrane oxygenation (ECMO), but rather with underlying disease processes. In this review, neurocognitive outcome and brain pathology following neonatal critical respiratory and cardiac illness, either treated with or without ECMO, are described and compared in order to gain insight into potential underlying pathophysiological mechanisms. Putting these findings together, it becomes apparent that both children with complex congenital heart disease and children who survived severe respiratory failure are at risk of neurocognitive deficits later in life. Neurorehabilitation strategies, such as Cogmed working-memory training, are discussed. While prevention of neurocognitive deficits altogether should be strived for in the future, this is not realistic at this moment. It is therefore of great importance that children growing up after neonatal critical illness receive long-term care that includes psychoeducation and personalized practical tools that can be used to improve their daily life activities.
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Affiliation(s)
- Raisa M Schiller
- Department of Pediatric Surgery/IC Children and Child and Adolescent Psychiatry/Psychology, Erasmus MC-Sophia Children's Hospital, Rotterdam, Netherlands
| | - Dick Tibboel
- Department of Pediatric Surgery/IC Children and Child and Adolescent Psychiatry/Psychology, Erasmus MC-Sophia Children's Hospital, Rotterdam, Netherlands
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