1
|
Soltani A, Fidler DJ, Patel L, Voth K, Esbensen AJ. Longitudinally Predicting Behavioral Challenges From Executive Functioning in Youth With Down Syndrome. AMERICAN JOURNAL ON INTELLECTUAL AND DEVELOPMENTAL DISABILITIES 2025; 130:146-162. [PMID: 39999868 DOI: 10.1352/1944-7558-130.2.146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 10/29/2024] [Indexed: 02/27/2025]
Abstract
This study explored how caregiver-reported executive functioning domains, assessed by the BRIEF2 at baseline, predicted behavioral challenges reported by caregivers using the CBCL six months later. The sample included 94 youth with Down syndrome, aged 6 to 18 years. Results of hierarchical regression analyses revealed that, after controlling for the effect of IQ, working memory significantly predicted inattentive behaviors, inhibition significantly predicted rule-breaking behaviors, and both inhibition and emotional control significantly predicted aggressive and externalizing behaviors. After controlling for baseline behaviors, only working memory persisted as a significant predictor of inattentive behaviors measured six months later. The findings are discussed by referring to the relevant theories and research and providing clinical implications and recommendations for further studies.
Collapse
Affiliation(s)
- Amanallah Soltani
- Amanallah Soltani, Taylor's University, Malaysia, Deborah J. Fidler, Colorado State University, Lina Patel, University of Colorado School of Medicine, Kellie Voth, Cincinnati Children's Hospital Medical Center, and Anna J. Esbensen, Cincinnati Children's Hospital Medical Center and University of Cincinnati College of Medicine
| | - Deborah J Fidler
- Amanallah Soltani, Taylor's University, Malaysia, Deborah J. Fidler, Colorado State University, Lina Patel, University of Colorado School of Medicine, Kellie Voth, Cincinnati Children's Hospital Medical Center, and Anna J. Esbensen, Cincinnati Children's Hospital Medical Center and University of Cincinnati College of Medicine
| | - Lina Patel
- Amanallah Soltani, Taylor's University, Malaysia, Deborah J. Fidler, Colorado State University, Lina Patel, University of Colorado School of Medicine, Kellie Voth, Cincinnati Children's Hospital Medical Center, and Anna J. Esbensen, Cincinnati Children's Hospital Medical Center and University of Cincinnati College of Medicine
| | - Kellie Voth
- Amanallah Soltani, Taylor's University, Malaysia, Deborah J. Fidler, Colorado State University, Lina Patel, University of Colorado School of Medicine, Kellie Voth, Cincinnati Children's Hospital Medical Center, and Anna J. Esbensen, Cincinnati Children's Hospital Medical Center and University of Cincinnati College of Medicine
| | - Anna J Esbensen
- Amanallah Soltani, Taylor's University, Malaysia, Deborah J. Fidler, Colorado State University, Lina Patel, University of Colorado School of Medicine, Kellie Voth, Cincinnati Children's Hospital Medical Center, and Anna J. Esbensen, Cincinnati Children's Hospital Medical Center and University of Cincinnati College of Medicine
| |
Collapse
|
2
|
Emili M, Stagni F, Bonasoni MP, Guidi S, Bartesaghi R. Cellularity Defects Are Not Ubiquitous in the Brains of Fetuses With Down Syndrome. Dev Neurobiol 2024; 84:264-273. [PMID: 39344402 DOI: 10.1002/dneu.22953] [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: 07/09/2024] [Revised: 08/29/2024] [Accepted: 09/03/2024] [Indexed: 10/01/2024]
Abstract
Down syndrome (DS) is a genetic pathology characterized by various developmental defects. Unlike other clinical problems, intellectual disability is an invariant clinical trait of DS. Impairment of neurogenesis accompanied by brain hypotrophy is a typical neurodevelopmental phenotype of DS, suggesting that a reduction in the number of cells forming the brain may be a key determinant of intellectual disability. Previous evidence showed that fetuses with DS exhibit widespread hypocellularity in brain regions belonging to the temporal lobe memory systems, which may account for the typical explicit memory impairment that characterizes DS. In the current study, we have examined the basal ganglia, the insular cortex (INS), and the cingulate cortex (CCX) of fetuses with DS and age-matched controls (18-22 weeks of gestation), to establish whether cellularity defects involve regions that are not primarily involved in explicit memory. We found that fetuses with DS exhibit a notable hypocellularity in the putamen (-30%) and globus pallidus (-35%). In contrast, no cellularity differences were found in the INS and CCX, indicating that hypocellularity is not ubiquitous in the DS brain. The hypocellularity found in the basal ganglia, which are critically implicated in the control of movement, suggests that such alterations may contribute to the motor abnormalities of DS. The normal cytoarchitecture of the INS and CCX suggests that the alterations exhibited by people with DS in functions in which these regions are involved are not attributable to neuron paucity.
Collapse
Affiliation(s)
- Marco Emili
- Department for Life Quality Studies, University of Bologna, Rimini, Italy
| | - Fiorenza Stagni
- Department for Life Quality Studies, University of Bologna, Rimini, Italy
| | | | - Sandra Guidi
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Renata Bartesaghi
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| |
Collapse
|
3
|
Chachlaki K, Duc KL, Storme L, Prévot V. Novel insights into minipuberty and GnRH: Implications on neurodevelopment, cognition, and COVID-19 therapeutics. J Neuroendocrinol 2024; 36:e13387. [PMID: 38565500 PMCID: PMC7616535 DOI: 10.1111/jne.13387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 03/18/2024] [Accepted: 03/18/2024] [Indexed: 04/04/2024]
Abstract
In humans, the first 1000 days of life are pivotal for brain and organism development. Shortly after birth, gonadotropin-releasing hormone (GnRH) neurons in the hypothalamus are activated, a phenomenon known as minipuberty. This phenomenon, observed in all mammals studied, influences the postnatal development of the hypothalamic-pituitary-gonadal (HPG) axis and reproductive function. This review will put into perspective the results of recent studies showing that the impact of minipuberty extends beyond reproductive function, influencing sensory and cognitive maturation. Studies in mice have revealed the role of nitric oxide (NO) in regulating minipuberty amplitude, with NO deficiency linked to cognitive and olfactory deficits. Additionally, findings indicate that cognitive and sensory defects in adulthood in a mouse model of Down syndrome are associated with an age-dependent decline of GnRH production, whose origin can be traced back to minipuberty, and point to the potential therapeutic role of pulsatile GnRH administration in cognitive disorders. Furthermore, this review delves into the repercussions of COVID-19 on GnRH production, emphasizing potential consequences for neurodevelopment and cognitive function in infected individuals. Notably, GnRH neurons appear susceptible to SARS-CoV-2 infection, raising concerns about potential long-term effects on brain development and function. In conclusion, the intricate interplay between GnRH neurons, GnRH release, and the activity of various extrahypothalamic brain circuits reveals an unexpected role for these neuroendocrine neurons in the development and maintenance of sensory and cognitive functions, supplementing their established function in reproduction. Therapeutic interventions targeting the HPG axis, such as inhaled NO therapy in infancy and pulsatile GnRH administration in adults, emerge as promising approaches for addressing neurodevelopmental cognitive disorders and pathological aging.
Collapse
Affiliation(s)
- Konstantina Chachlaki
- Univ. Lille, Inserm, CHU Lille, Laboratory of Development and Plasticity of the Neuroendocrine Brain, Lille Neuroscience & Cognition, UMR_S1172, Lille, France
- Univ. Lille, Inserm, CHU Lille, Hospital-University Federation (FHU) 1000 first days of Life, Lille, France
| | - Kevin Le Duc
- Univ. Lille, Inserm, CHU Lille, Hospital-University Federation (FHU) 1000 first days of Life, Lille, France
- CHU Lille, Neonatology Department, Jeanne de Flandres Hospital, Lille, France
| | - Laurent Storme
- Univ. Lille, Inserm, CHU Lille, Hospital-University Federation (FHU) 1000 first days of Life, Lille, France
- CHU Lille, Neonatology Department, Jeanne de Flandres Hospital, Lille, France
| | - Vincent Prévot
- Univ. Lille, Inserm, CHU Lille, Laboratory of Development and Plasticity of the Neuroendocrine Brain, Lille Neuroscience & Cognition, UMR_S1172, Lille, France
- Univ. Lille, Inserm, CHU Lille, Hospital-University Federation (FHU) 1000 first days of Life, Lille, France
| |
Collapse
|
4
|
Chang P, Pérez-González M, Constable J, Bush D, Cleverley K, Tybulewicz VLJ, Fisher EMC, Walker MC. Neuronal oscillations in cognition: Down syndrome as a model of mouse to human translation. Neuroscientist 2024:10738584241271414. [PMID: 39316548 DOI: 10.1177/10738584241271414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/26/2024]
Abstract
Down syndrome (DS), a prevalent cognitive disorder resulting from trisomy of human chromosome 21 (Hsa21), poses a significant global health concern. Affecting approximately 1 in 800 live births worldwide, DS is the leading genetic cause of intellectual disability and a major predisposing factor for early-onset Alzheimer's dementia. The estimated global population of individuals with DS is 6 million, with increasing prevalence due to advances in DS health care. Global efforts are dedicated to unraveling the mechanisms behind the varied clinical outcomes in DS. Recent studies on DS mouse models reveal disrupted neuronal circuits, providing insights into DS pathologies. Yet, translating these findings to humans faces challenges due to limited systematic electrophysiological analyses directly comparing human and mouse. Additionally, disparities in experimental procedures between the two species pose hurdles to successful translation. This review provides a concise overview of neuronal oscillations in human and rodent cognition. Focusing on recent DS mouse model studies, we highlight disruptions in associated brain function. We discuss various electrophysiological paradigms and suggest avenues for exploring molecular dysfunctions contributing to DS-related cognitive impairments. Deciphering neuronal oscillation intricacies holds promise for targeted therapies to alleviate cognitive disabilities in DS individuals.
Collapse
Affiliation(s)
- Pishan Chang
- Department of Neuromuscular Diseases, UCL Institute of Neurology, London, UK
- Department of Clinical and Experimental Epilepsy, UCL Institute of Neurology, London, UK
- School of Physiology, Pharmacology, and Neuroscience, University of Bristol, Bristol, UK
| | | | - Jessica Constable
- Department of Neuromuscular Diseases, UCL Institute of Neurology, London, UK
| | - Daniel Bush
- Department of Neuroscience, Physiology, and Pharmacology, UCL, London, UK
| | - Karen Cleverley
- Department of Neuromuscular Diseases, UCL Institute of Neurology, London, UK
| | - Victor L J Tybulewicz
- Immune Cell Biology and Down Syndrome Laboratory, The Francis Crick Institute, London, UK
| | | | - Matthew C Walker
- Department of Clinical and Experimental Epilepsy, UCL Institute of Neurology, London, UK
| |
Collapse
|
5
|
Faralli A, Fucà E, Lazzaro G, Menghini D, Vicari S, Costanzo F. Transcranial Direct Current Stimulation in neurogenetic syndromes: new treatment perspectives for Down syndrome? Front Cell Neurosci 2024; 18:1328963. [PMID: 38456063 PMCID: PMC10917937 DOI: 10.3389/fncel.2024.1328963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 01/25/2024] [Indexed: 03/09/2024] Open
Abstract
This perspective review aims to explore the potential neurobiological mechanisms involved in the application of transcranial Direct Current Stimulation (tDCS) for Down syndrome (DS), the leading cause of genetically-based intellectual disability. The neural mechanisms underlying tDCS interventions in genetic disorders, typically characterized by cognitive deficits, are grounded in the concept of brain plasticity. We initially present the neurobiological and functional effects elicited by tDCS applications in enhancing neuroplasticity and in regulating the excitatory/inhibitory balance, both associated with cognitive improvement in the general population. The review begins with evidence on tDCS applications in five neurogenetic disorders, including Rett, Prader-Willi, Phelan-McDermid, and Neurofibromatosis 1 syndromes, as well as DS. Available evidence supports tDCS as a potential intervention tool and underscores the importance of advancing neurobiological research into the mechanisms of tDCS action in these conditions. We then discuss the potential of tDCS as a promising non-invasive strategy to mitigate deficits in plasticity and promote fine-tuning of the excitatory/inhibitory balance in DS, exploring implications for cognitive treatment perspectives in this population.
Collapse
Affiliation(s)
- Alessio Faralli
- Child and Adolescent Neuropsychiatry Unit, Bambino Gesù Children's Hospital (IRCCS), Rome, Italy
| | - Elisa Fucà
- Child and Adolescent Neuropsychiatry Unit, Bambino Gesù Children's Hospital (IRCCS), Rome, Italy
| | - Giulia Lazzaro
- Child and Adolescent Neuropsychiatry Unit, Bambino Gesù Children's Hospital (IRCCS), Rome, Italy
| | - Deny Menghini
- Child and Adolescent Neuropsychiatry Unit, Bambino Gesù Children's Hospital (IRCCS), Rome, Italy
| | - Stefano Vicari
- Child and Adolescent Neuropsychiatry Unit, Bambino Gesù Children's Hospital (IRCCS), Rome, Italy
- Life Sciences and Public Health Department, Catholic University of Sacred Heart, Rome, Italy
| | - Floriana Costanzo
- Child and Adolescent Neuropsychiatry Unit, Bambino Gesù Children's Hospital (IRCCS), Rome, Italy
| |
Collapse
|
6
|
Millevert C, Vidas-Guscic N, Vanherp L, Jonckers E, Verhoye M, Staelens S, Bertoglio D, Weckhuysen S. Resting-State Functional MRI and PET Imaging as Noninvasive Tools to Study (Ab)Normal Neurodevelopment in Humans and Rodents. J Neurosci 2023; 43:8275-8293. [PMID: 38073598 PMCID: PMC10711730 DOI: 10.1523/jneurosci.1043-23.2023] [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: 09/18/2023] [Revised: 06/09/2023] [Accepted: 09/13/2023] [Indexed: 12/18/2023] Open
Abstract
Neurodevelopmental disorders (NDDs) are a group of complex neurologic and psychiatric disorders. Functional and molecular imaging techniques, such as resting-state functional magnetic resonance imaging (rs-fMRI) and positron emission tomography (PET), can be used to measure network activity noninvasively and longitudinally during maturation in both humans and rodent models. Here, we review the current knowledge on rs-fMRI and PET biomarkers in the study of normal and abnormal neurodevelopment, including intellectual disability (ID; with/without epilepsy), autism spectrum disorder (ASD), and attention deficit hyperactivity disorder (ADHD), in humans and rodent models from birth until adulthood, and evaluate the cross-species translational value of the imaging biomarkers. To date, only a few isolated studies have used rs-fMRI or PET to study (abnormal) neurodevelopment in rodents during infancy, the critical period of neurodevelopment. Further work to explore the feasibility of performing functional imaging studies in infant rodent models is essential, as rs-fMRI and PET imaging in transgenic rodent models of NDDs are powerful techniques for studying disease pathogenesis, developing noninvasive preclinical imaging biomarkers of neurodevelopmental dysfunction, and evaluating treatment-response in disease-specific models.
Collapse
Affiliation(s)
- Charissa Millevert
- Applied & Translational Neurogenomics Group, Vlaams Instituut voor Biotechnology (VIB) Center for Molecular Neurology, VIB, Antwerp 2610, Belgium
- Department of Neurology, University Hospital of Antwerp, Antwerp 2610, Belgium
- µNEURO Research Centre of Excellence, University of Antwerp, Antwerp 2610, Belgium
| | - Nicholas Vidas-Guscic
- Bio-Imaging Lab, University of Antwerp, Antwerp 2610, Belgium
- µNEURO Research Centre of Excellence, University of Antwerp, Antwerp 2610, Belgium
| | - Liesbeth Vanherp
- µNEURO Research Centre of Excellence, University of Antwerp, Antwerp 2610, Belgium
| | - Elisabeth Jonckers
- Bio-Imaging Lab, University of Antwerp, Antwerp 2610, Belgium
- µNEURO Research Centre of Excellence, University of Antwerp, Antwerp 2610, Belgium
| | - Marleen Verhoye
- Bio-Imaging Lab, University of Antwerp, Antwerp 2610, Belgium
- µNEURO Research Centre of Excellence, University of Antwerp, Antwerp 2610, Belgium
| | - Steven Staelens
- Molecular Imaging Center Antwerp (MICA), University of Antwerp, Antwerp 2610, Belgium
- µNEURO Research Centre of Excellence, University of Antwerp, Antwerp 2610, Belgium
| | - Daniele Bertoglio
- Bio-Imaging Lab, University of Antwerp, Antwerp 2610, Belgium
- Molecular Imaging Center Antwerp (MICA), University of Antwerp, Antwerp 2610, Belgium
- µNEURO Research Centre of Excellence, University of Antwerp, Antwerp 2610, Belgium
| | - Sarah Weckhuysen
- Applied & Translational Neurogenomics Group, Vlaams Instituut voor Biotechnology (VIB) Center for Molecular Neurology, VIB, Antwerp 2610, Belgium
- Department of Neurology, University Hospital of Antwerp, Antwerp 2610, Belgium
- µNEURO Research Centre of Excellence, University of Antwerp, Antwerp 2610, Belgium
- Translational Neurosciences, Faculty of Medicine and Health Science, University of Antwerp, Antwerp 2610, Belgium
| |
Collapse
|
7
|
Fructuoso M, Fernández-Blanco Á, Gallego-Román A, Sierra C, de Lagrán MM, Lorenzon N, De Toma I, Langohr K, Martín-García E, Maldonado R, Dairou J, Janel N, Dierssen M. Exploring the link between hedonic overeating and prefrontal cortex dysfunction in the Ts65Dn trisomic mouse model. Cell Mol Life Sci 2023; 80:370. [PMID: 37989807 PMCID: PMC11072570 DOI: 10.1007/s00018-023-05009-x] [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: 07/31/2023] [Revised: 10/11/2023] [Accepted: 10/21/2023] [Indexed: 11/23/2023]
Abstract
Individuals with Down syndrome (DS) have a higher prevalence of obesity compared to the general population. Conventionally, this has been attributed to endocrine issues and lack of exercise. However, deficits in neural reward responses and dopaminergic disturbances in DS may be contributing factors. To investigate this, we focused on a mouse model (Ts65Dn) bearing some triplicated genes homologous to trisomy 21. Through detailed meal pattern analysis in male Ts65Dn mice, we observed an increased preference for energy-dense food, pointing towards a potential "hedonic" overeating behavior. Moreover, trisomic mice exhibited higher scores in compulsivity and inflexibility tests when limited access to energy-dense food and quinine hydrochloride adulteration were introduced, compared to euploid controls. Interestingly, when we activated prelimbic-to-nucleus accumbens projections in Ts65Dn male mice using a chemogenetic approach, impulsive and compulsive behaviors significantly decreased, shedding light on a promising intervention avenue. Our findings uncover a novel mechanism behind the vulnerability to overeating and offer potential new pathways for tackling obesity through innovative interventions.
Collapse
Affiliation(s)
- Marta Fructuoso
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, 08003, Barcelona, Spain
| | - Álvaro Fernández-Blanco
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, 08003, Barcelona, Spain
| | - Ana Gallego-Román
- Laboratory of Neuropharmacology-Neurophar, Department of Medicine and Life Sciences, Universitat Pompeu Fabra (UPF), Barcelona, Spain
| | - Cèsar Sierra
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, 08003, Barcelona, Spain
| | - María Martínez de Lagrán
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, 08003, Barcelona, Spain
| | - Nicola Lorenzon
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, 08003, Barcelona, Spain
| | - Ilario De Toma
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, 08003, Barcelona, Spain
| | - Klaus Langohr
- Human Pharmacology and Clinical Neurosciences Research Group, Neurosciences Research Program, Hospital Del Mar Medical Research Institute (IMIM), 08003, Barcelona, Spain
- Department of Statistics and Operations Research, Universitat Politècnica de Catalunya/ BARCELONATECH, Barcelona, Spain
| | - Elena Martín-García
- Laboratory of Neuropharmacology-Neurophar, Department of Medicine and Life Sciences, Universitat Pompeu Fabra (UPF), Barcelona, Spain
- Human Pharmacology and Clinical Neurosciences Research Group, Neurosciences Research Program, Hospital Del Mar Medical Research Institute (IMIM), 08003, Barcelona, Spain
- Departament de Psicobiologia i Metodologia de Les Ciències de la Salut, Universitat Autònoma de Barcelona (UAB), Cerdanyola del Vallès, Barcelona, Spain
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologique, UMR 8601, CNRS, Université de Paris, 75013, Paris, France
| | - Rafael Maldonado
- Laboratory of Neuropharmacology-Neurophar, Department of Medicine and Life Sciences, Universitat Pompeu Fabra (UPF), Barcelona, Spain
- Human Pharmacology and Clinical Neurosciences Research Group, Neurosciences Research Program, Hospital Del Mar Medical Research Institute (IMIM), 08003, Barcelona, Spain
| | - Julien Dairou
- Departament de Psicobiologia i Metodologia de Les Ciències de la Salut, Universitat Autònoma de Barcelona (UAB), Cerdanyola del Vallès, Barcelona, Spain
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologique, UMR 8601, CNRS, Université de Paris, 75013, Paris, France
| | - Nathalie Janel
- BFA, UMR 8251, CNRS, Université de Paris, 75013, Paris, France
| | - Mara Dierssen
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, 08003, Barcelona, Spain.
- Laboratory of Neuropharmacology-Neurophar, Department of Medicine and Life Sciences, Universitat Pompeu Fabra (UPF), Barcelona, Spain.
- Human Pharmacology and Clinical Neurosciences Research Group, Neurosciences Research Program, Hospital Del Mar Medical Research Institute (IMIM), 08003, Barcelona, Spain.
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain.
| |
Collapse
|
8
|
Jiang X, Hu X, Daamen M, Wang X, Fan C, Meiberth D, Spottke A, Roeske S, Fliessbach K, Spruth EJ, Altenstein S, Lohse A, Hansen N, Glanz W, Incesoy EI, Dobisch L, Janowitz D, Rauchmann BS, Ramirez A, Kilimann I, Munk MH, Wang X, Schneider LS, Gabelin T, Roy N, Wolfsgruber S, Kleineidam L, Hetzer S, Dechent P, Ewers M, Scheffler K, Amthauer H, Buchert R, Essler M, Drzezga A, Rominger A, Krause BJ, Reimold M, Priller J, Schneider A, Wiltfang J, Buerger K, Perneczky R, Teipel S, Laske C, Peters O, Düzel E, Wagner M, Jiang J, Jessen F, Boecker H, Han Y. Altered limbic functional connectivity in individuals with subjective cognitive decline: Converging and diverging findings across Chinese and German cohorts. Alzheimers Dement 2023; 19:4922-4934. [PMID: 37070734 DOI: 10.1002/alz.13068] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 03/08/2023] [Accepted: 03/09/2023] [Indexed: 04/19/2023]
Abstract
INTRODUCTION It remains unclear whether functional brain networks are consistently altered in individuals with subjective cognitive decline (SCD) of diverse ethnic and cultural backgrounds and whether the network alterations are associated with an amyloid burden. METHODS Cross-sectional resting-state functional magnetic resonance imaging connectivity (FC) and amyloid-positron emission tomography (PET) data from the Chinese Sino Longitudinal Study on Cognitive Decline and German DZNE Longitudinal Cognitive Impairment and Dementia cohorts were analyzed. RESULTS Limbic FC, particularly hippocampal connectivity with right insula, was consistently higher in SCD than in controls, and correlated with SCD-plus features. Smaller SCD subcohorts with PET showed inconsistent amyloid positivity rates and FC-amyloid associations across cohorts. DISCUSSION Our results suggest an early adaptation of the limbic network in SCD, which may reflect increased awareness of cognitive decline, irrespective of amyloid pathology. Different amyloid positivity rates may indicate a heterogeneous underlying etiology in Eastern and Western SCD cohorts when applying current research criteria. Future studies should identify culture-specific features to enrich preclinical Alzheimer's disease in non-Western populations. HIGHLIGHTS Common limbic hyperconnectivity across Chinese and German subjective cognitive decline (SCD) cohorts was observed. Limbic hyperconnectivity may reflect awareness of cognition, irrespective of amyloid load. Further cross-cultural harmonization of SCD regarding Alzheimer's disease pathology is required.
Collapse
Affiliation(s)
- Xueyan Jiang
- Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
- Key Laboratory of Biomedical Engineering of Hainan Province, School of Biomedical Engineering, Hainan University, Haikou, China
| | - Xiaochen Hu
- Department of Psychiatry, University of Cologne, Medical Faculty, Cologne, Germany
| | - Marcel Daamen
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Xiaoqi Wang
- Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China
| | - Chunqiu Fan
- Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China
| | - Dix Meiberth
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
- Department of Psychiatry, University of Cologne, Medical Faculty, Cologne, Germany
| | - Annika Spottke
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
- Department of Neurology, University of Bonn, Bonn, Germany
| | - Sandra Roeske
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Klaus Fliessbach
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
- University of Bonn Medical Center, Department of Neurodegenerative Disease and Geriatric Psychiatry/Psychiatry, Bonn, Germany
| | - Eike Jakob Spruth
- German Center for Neurodegenerative Diseases (DZNE), Berlin, Germany
- Department of Psychiatry and Psychotherapy, Charité, Berlin, Germany
| | - Slawek Altenstein
- German Center for Neurodegenerative Diseases (DZNE), Berlin, Germany
- Department of Psychiatry and Psychotherapy, Charité, Berlin, Germany
| | - Andrea Lohse
- Department of Psychiatry and Psychotherapy, Charité, Berlin, Germany
| | - Niels Hansen
- Department of Psychiatry and Psychotherapy, University Medical Center Goettingen, University of Goettingen, Goettingen, Germany
| | - Wenzel Glanz
- German Center for Neurodegenerative Diseases (DZNE), Magdeburg, Germany
| | - Enise I Incesoy
- German Center for Neurodegenerative Diseases (DZNE), Magdeburg, Germany
- Institute of Cognitive Neurology and Dementia Research (IKND), Otto-von-Guericke University, Magdeburg, Germany
- Department for Psychiatry and Psychotherapy, University Clinic Magdeburg, Magdeburg, Germany
| | - Laura Dobisch
- German Center for Neurodegenerative Diseases (DZNE), Magdeburg, Germany
| | - Daniel Janowitz
- Institute for Stroke and Dementia Research (ISD), University Hospital, LMU Munich, Munich, Germany
| | - Boris-Stephan Rauchmann
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany
| | - Alfredo Ramirez
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
- University of Bonn Medical Center, Department of Neurodegenerative Disease and Geriatric Psychiatry/Psychiatry, Bonn, Germany
- Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
- Division of Neurogenetics and Molecular Psychiatry, Department of Psychiatry and Psychotherapy, Faculty of Medicine and University Hospital, University of Cologne, Cologne, Germany
- Department of Psychiatry & Glenn Biggs Institute for Alzheimer's and Neurodegenerative Diseases, San Antonio, Texas, USA
| | - Ingo Kilimann
- German Center for Neurodegenerative Diseases (DZNE), Rostock, Germany
- Department of Psychosomatic Medicine, Rostock University Medical Center, Rostock, Germany
| | - Matthias H Munk
- German Center for Neurodegenerative Diseases (DZNE), Tuebingen, Germany
- Department of Psychiatry and Psychotherapy, University of Tuebingen, Tuebingen, Germany
| | - Xiao Wang
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin-Institute of Psychiatry and Psychotherapy, Berlin, Germany
| | - Luisa-Sophie Schneider
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin-Institute of Psychiatry and Psychotherapy, Berlin, Germany
| | - Tatjana Gabelin
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin-Institute of Psychiatry and Psychotherapy, Berlin, Germany
| | - Nina Roy
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Steffen Wolfsgruber
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
- University of Bonn Medical Center, Department of Neurodegenerative Disease and Geriatric Psychiatry/Psychiatry, Bonn, Germany
| | - Luca Kleineidam
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
- University of Bonn Medical Center, Department of Neurodegenerative Disease and Geriatric Psychiatry/Psychiatry, Bonn, Germany
| | - Stefan Hetzer
- Berlin Center for Advanced Neuroimaging, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Peter Dechent
- MR-Research in Neurosciences, Department of Cognitive Neurology, Georg-August-University Goettingen, Goettingen, Germany
| | - Michael Ewers
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany
| | - Klaus Scheffler
- Department for Biomedical Magnetic Resonance, University of Tuebingen, Tuebingen, Germany
| | - Holger Amthauer
- Department of Nuclear Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Ralph Buchert
- Department of Nuclear Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Markus Essler
- Department of Nuclear Medicine, University Hospital Bonn, Bonn, Germany
| | - Alexander Drzezga
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
- Department of Nuclear Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, Germany
- Institute of Neuroscience and Medicine (INM-2), Molecular Organization of the Brain, Forschungszentrum Jülich, Germany
| | - Axel Rominger
- Department of Nuclear Medicine, Ludwig-Maximilian-University Munich, Munich, Germany
- Department of Nuclear Medicine, Inselspital, Bern University Hospital, University of Bern, Switzerland
| | - Bernd J Krause
- Department of Nuclear Medicine, Rostock University Medical Centre, Rostock, Germany
| | - Matthias Reimold
- Department of Nuclear Medicine and Clinical Molecular Imaging, Eberhard-Karls-University, Tuebingen, Germany
| | - Josef Priller
- German Center for Neurodegenerative Diseases (DZNE), Berlin, Germany
- Department of Psychiatry and Psychotherapy, Charité, Berlin, Germany
- School of Medicine, Technical University of Munich, Department of Psychiatry and Psychotherapy, Munich, Germany
- University of Edinburgh and UK DRI, Edinburgh, UK
| | - Anja Schneider
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
- University of Bonn Medical Center, Department of Neurodegenerative Disease and Geriatric Psychiatry/Psychiatry, Bonn, Germany
| | - Jens Wiltfang
- Department of Psychiatry and Psychotherapy, University Medical Center Goettingen, University of Goettingen, Goettingen, Germany
- German Center for Neurodegenerative Diseases (DZNE), Goettingen, Germany
- Neurosciences and Signaling Group, Institute of Biomedicine (iBiMED), Department of Medical Sciences, University of Aveiro, Aveiro, Portugal
| | - Katharina Buerger
- Institute for Stroke and Dementia Research (ISD), University Hospital, LMU Munich, Munich, Germany
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany
| | - Robert Perneczky
- Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy) Munich, Munich, Germany
- Ageing Epidemiology Research Unit (AGE), School of Public Health, Imperial College London, London, UK
| | - Stefan Teipel
- German Center for Neurodegenerative Diseases (DZNE), Rostock, Germany
- Department of Psychosomatic Medicine, Rostock University Medical Center, Rostock, Germany
| | - Christoph Laske
- German Center for Neurodegenerative Diseases (DZNE), Tuebingen, Germany
- Section for Dementia Research, Hertie Institute for Clinical Brain Research and Department of Psychiatry and Psychotherapy, University of Tuebingen, Tuebingen, Germany
| | - Oliver Peters
- German Center for Neurodegenerative Diseases (DZNE), Berlin, Germany
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin-Institute of Psychiatry and Psychotherapy, Berlin, Germany
| | - Emrah Düzel
- German Center for Neurodegenerative Diseases (DZNE), Magdeburg, Germany
- Institute of Cognitive Neurology and Dementia Research (IKND), Otto-von-Guericke University, Magdeburg, Germany
| | - Michael Wagner
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
- University of Bonn Medical Center, Department of Neurodegenerative Disease and Geriatric Psychiatry/Psychiatry, Bonn, Germany
| | - Jiehui Jiang
- Institute of Biomedical Engineering, Shanghai University, Shanghai, China
| | - Frank Jessen
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
- Department of Psychiatry, University of Cologne, Medical Faculty, Cologne, Germany
- Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Henning Boecker
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
- Clinical Functional Imaging Group, Department of Diagnostic and Interventional Radiology, University Hospital Bonn, Bonn, Germany
| | - Ying Han
- Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China
- Key Laboratory of Biomedical Engineering of Hainan Province, School of Biomedical Engineering, Hainan University, Haikou, China
- Center of Alzheimer's Disease, Beijing Institute for Brain Disorders, Beijing, China
- National Clinical Research Center for Geriatric Disorders, Beijing, China
| |
Collapse
|
9
|
Shaikh A, Li YQ, Lu J. Perspectives on pain in Down syndrome. Med Res Rev 2023; 43:1411-1437. [PMID: 36924439 DOI: 10.1002/med.21954] [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: 05/07/2021] [Revised: 01/08/2023] [Accepted: 02/28/2023] [Indexed: 03/18/2023]
Abstract
Down syndrome (DS) or trisomy 21 is a genetic condition often accompanied by chronic pain caused by congenital abnormalities and/or conditions, such as osteoarthritis, recurrent infections, and leukemia. Although DS patients are more susceptible to chronic pain as compared to the general population, the pain experience in these individuals may vary, attributed to the heterogenous structural and functional differences in the central nervous system, which might result in abnormal pain sensory information transduction, transmission, modulation, and perception. We tried to elaborate on some key questions and possible explanations in this review. Further clarification of the mechanisms underlying such abnormal conditions induced by the structural and functional differences is needed to help pain management in DS patients.
Collapse
Affiliation(s)
- Ammara Shaikh
- Department of Human Anatomy, College of Basic Medical Sciences, China Medical University, Shenyang, Liaoning Province, China
| | - Yun-Qing Li
- Department of Anatomy, Histology, and Embryology & K. K. Leung Brain Research Centre, The Fourth Military Medical University, Xi'an, Shaanxi Province, China
- Department of Anatomy, Basic Medical College, Zhengzhou University, Zhengzhou, China
| | - Jie Lu
- Department of Human Anatomy, College of Basic Medical Sciences, China Medical University, Shenyang, Liaoning Province, China
| |
Collapse
|
10
|
Prévot V, Pitteloud N. [Down syndrome, GnRH and cognition]. Med Sci (Paris) 2023; 39:316-318. [PMID: 37094260 DOI: 10.1051/medsci/2023037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2023] Open
Affiliation(s)
- Vincent Prévot
- Univ. Lille, Inserm, CHU Lille, laboratoire de développement et plasticité du cerveau neuroendocrine, Lille neuroscience & cognition, UMRS 1172, Lille, France
| | - Nelly Pitteloud
- Centre hospitalier universitaire vaudois, département d'endocrinologie, diabétologie, et métabolisme, Lausanne, Suisse
| |
Collapse
|
11
|
Victorino DB, Faber J, Pinheiro DJLL, Scorza FA, Almeida ACG, Costa ACS, Scorza CA. Toward the Identification of Neurophysiological Biomarkers for Alzheimer's Disease in Down Syndrome: A Potential Role for Cross-Frequency Phase-Amplitude Coupling Analysis. Aging Dis 2023; 14:428-449. [PMID: 37008053 PMCID: PMC10017148 DOI: 10.14336/ad.2022.0906] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 09/06/2022] [Indexed: 11/18/2022] Open
Abstract
Cross-frequency coupling (CFC) mechanisms play a central role in brain activity. Pathophysiological mechanisms leading to many brain disorders, such as Alzheimer's disease (AD), may produce unique patterns of brain activity detectable by electroencephalography (EEG). Identifying biomarkers for AD diagnosis is also an ambition among research teams working in Down syndrome (DS), given the increased susceptibility of people with DS to develop early-onset AD (DS-AD). Here, we review accumulating evidence that altered theta-gamma phase-amplitude coupling (PAC) may be one of the earliest EEG signatures of AD, and therefore may serve as an adjuvant tool for detecting cognitive decline in DS-AD. We suggest that this field of research could potentially provide clues to the biophysical mechanisms underlying cognitive dysfunction in DS-AD and generate opportunities for identifying EEG-based biomarkers with diagnostic and prognostic utility in DS-AD.
Collapse
Affiliation(s)
- Daniella B Victorino
- Discipline of Neuroscience, Department of Neurology and Neurosurgery, Federal University of São Paulo / Paulista Medical School, São Paulo, SP, Brazil.
| | - Jean Faber
- Discipline of Neuroscience, Department of Neurology and Neurosurgery, Federal University of São Paulo / Paulista Medical School, São Paulo, SP, Brazil.
| | - Daniel J. L. L Pinheiro
- Discipline of Neuroscience, Department of Neurology and Neurosurgery, Federal University of São Paulo / Paulista Medical School, São Paulo, SP, Brazil.
| | - Fulvio A Scorza
- Discipline of Neuroscience, Department of Neurology and Neurosurgery, Federal University of São Paulo / Paulista Medical School, São Paulo, SP, Brazil.
| | - Antônio C. G Almeida
- Department of Biosystems Engineering, Federal University of São João Del Rei, Minas Gerais, MG, Brazil.
| | - Alberto C. S Costa
- Division of Psychiatry, Case Western Reserve University, Cleveland, OH, United States.
- Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, OH, United States.
| | - Carla A Scorza
- Discipline of Neuroscience, Department of Neurology and Neurosurgery, Federal University of São Paulo / Paulista Medical School, São Paulo, SP, Brazil.
| |
Collapse
|
12
|
Cañete-Massé C, Carbó-Carreté M, Peró-Cebollero M, Cui SX, Yan CG, Guàrdia-Olmos J. Abnormal degree centrality and functional connectivity in Down syndrome: A resting-state fMRI study. Int J Clin Health Psychol 2023; 23:100341. [PMID: 36262644 PMCID: PMC9551068 DOI: 10.1016/j.ijchp.2022.100341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 09/10/2022] [Indexed: 11/05/2022] Open
Abstract
Background/Objective Neuroimaging studies have shown brain abnormalities in Down syndrome (DS) but have not clarified the underlying mechanisms of dysfunction. Here, we investigated the degree centrality (DC) abnormalities found in the DS group compared with the control group, and we conducted seed-based functional connectivity (FC) with the significant clusters found in DC. Moreover, we used the significant clusters of DC and the seed-based FC to elucidate differences between brain networks in DS compared with controls. Method The sample comprised 18 persons with DS (M = 28.67, SD = 4.18) and 18 controls (M = 28.56, SD = 4.26). Both samples underwent resting-state functional magnetic resonance imaging. Results DC analysis showed increased DC in the DS in temporal and right frontal lobe, as well as in the left caudate and rectus and decreased DC in the DS in regions of the left frontal lobe. Regarding seed-based FC, DS showed increased and decreased FC. Significant differences were also found between networks using Yeo parcellations, showing both hyperconnectivity and hypoconnectivity between and within networks. Conclusions DC, seed-based FC and brain networks seem altered in DS, finding hypo- and hyperconnectivity depending on the areas. Network analysis revealed between- and within-network differences, and these abnormalities shown in DS could be related to the characteristics of the population.
Collapse
Affiliation(s)
- Cristina Cañete-Massé
- Department of Social Psychology and Quantitative Psychology, Faculty of Psychology, Universitat de Barcelona, Barcelona, Spain,UB Institute of Complex Systems, Universitat de Barcelona, Barcelona, Spain,Corresponding author at: Campus de Mundet, Universitat de Barcelona, Passeig de la Vall d'Hebron, 171, 08035 Barcelona, Spain.
| | - Maria Carbó-Carreté
- Serra Hunter Fellow, Department of Cognition, Development and Educational Psychology, Faculty of Psychology, Universitat de Barcelona, Barcelona, Spain,Institute of Neuroscience, Universitat de Barcelona, Barcelona, Spain
| | - Maribel Peró-Cebollero
- Department of Social Psychology and Quantitative Psychology, Faculty of Psychology, Universitat de Barcelona, Barcelona, Spain,UB Institute of Complex Systems, Universitat de Barcelona, Barcelona, Spain,Institute of Neuroscience, Universitat de Barcelona, Barcelona, Spain
| | - Shi-Xian Cui
- CAS Key Laboratory of Behavioral Science, Institute of Psychology, Beijing, China,International Big-Data Center for Depression Research, Chinese Academy of Sciences, Beijing, China,Magnetic Resonance Imaging Research Center, Institute of Psychology, Chinese Academy of Sciences, Beijing, China,Sino-Danish College, Sino-Danish Center for Education and Research, University of Chinese Academy of Sciences, Beijing, China
| | - Chao-Gan Yan
- CAS Key Laboratory of Behavioral Science, Institute of Psychology, Beijing, China,International Big-Data Center for Depression Research, Chinese Academy of Sciences, Beijing, China,Magnetic Resonance Imaging Research Center, Institute of Psychology, Chinese Academy of Sciences, Beijing, China,Sino-Danish College, Sino-Danish Center for Education and Research, University of Chinese Academy of Sciences, Beijing, China
| | - Joan Guàrdia-Olmos
- Department of Social Psychology and Quantitative Psychology, Faculty of Psychology, Universitat de Barcelona, Barcelona, Spain,UB Institute of Complex Systems, Universitat de Barcelona, Barcelona, Spain,Institute of Neuroscience, Universitat de Barcelona, Barcelona, Spain
| |
Collapse
|
13
|
Porter M, Gavria P, Reeve J, Green M, Baracz S, Rossi A, Boulton K. Neuroanatomical correlates of social approach in Williams Syndrome and down syndrome. Neuropsychologia 2022; 175:108366. [PMID: 36088994 DOI: 10.1016/j.neuropsychologia.2022.108366] [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: 02/28/2022] [Revised: 08/16/2022] [Accepted: 08/31/2022] [Indexed: 11/28/2022]
Abstract
Individuals with Williams Syndrome (WS) or Downs Syndrome (DS) are often described as hypersociable, friendly and overly trusting of others. This hypersociability is a major concern for parents/caregivers due to the associated increased risk of exploitation and victimisation. Two brain regions - the amygdala and the orbitofrontal cortex (OFC) - have been implicated in driving this hypersociability in WS, and in the general population and have associations with emotional evaluation, threat detection and social motivation. However, there has been little neuroimaging research on this topic, especially in DS, to date. The aim of the present study was to investigate the potential neuroanatomical and neuropsychological correlates of hypersociability in WS and DS. Twelve individuals with WS (M = 22 years of age) and eleven individuals with DS (M = 26 years of age) completed a neuropsychological battery of executive functioning and social measures, including informant ratings on an ecologically measure of social approach. Clinical groups and twelve typically developing controls (M = 23 years) underwent a magnetic resonance imaging scan to investigate volumetric differences in the OFC and the amygdala. As expected, WS individuals displayed the highest overall social approach, especially in relation to need to approach strangers and drive to interact with strangers, as well as inappropriate/overfriendly behaviours. Both groups rated similarly in terms of social trust and unconditional positive regard. Emotion recognition abilities were similar across groups, with the DS group displaying some difficulties with negative emotions (especially anger). Inhibition and flexibility were similarly impaired across WS and DS. Compared to neurotypical controls, the DS group showed increased amygdala volumes bilaterally, while the WS group showed an enlarged right medial OFC. Approach ratings were significantly correlated with left amygdala and medial and left lateral OFC volumes in WS, and with these same regions bilaterally in DS. Results provide potential biological explanations for the hypersociability seen in WS and DS. Future research should focus on other potential neural correlates, as well as potential genetic and hormonal contributions to approach.
Collapse
Affiliation(s)
- Melanie Porter
- School of Psychology, Macquarie University, North Ryde, NSW, 2109, Australia.
| | - Polina Gavria
- School of Psychology, Macquarie University, North Ryde, NSW, 2109, Australia
| | - Jessica Reeve
- School of Psychology, Macquarie University, North Ryde, NSW, 2109, Australia
| | - Michael Green
- School of Psychology, Macquarie University, North Ryde, NSW, 2109, Australia
| | - Sarah Baracz
- School of Psychology, Macquarie University, North Ryde, NSW, 2109, Australia
| | - Adriana Rossi
- School of Psychology, Macquarie University, North Ryde, NSW, 2109, Australia
| | - Kelsie Boulton
- School of Psychology, Macquarie University, North Ryde, NSW, 2109, Australia
| |
Collapse
|
14
|
Bartesaghi R. Brain circuit pathology in Down syndrome: from neurons to neural networks. Rev Neurosci 2022; 34:365-423. [PMID: 36170842 DOI: 10.1515/revneuro-2022-0067] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 08/28/2022] [Indexed: 11/15/2022]
Abstract
Down syndrome (DS), a genetic pathology caused by triplication of chromosome 21, is characterized by brain hypotrophy and impairment of cognition starting from infancy. While studies in mouse models of DS have elucidated the major neuroanatomical and neurochemical defects of DS, comparatively fewer investigations have focused on the electrophysiology of the DS brain. Electrical activity is at the basis of brain functioning. Therefore, knowledge of the way in which brain circuits operate in DS is fundamental to understand the causes of behavioral impairment and devise targeted interventions. This review summarizes the state of the art regarding the electrical properties of the DS brain, starting from individual neurons and culminating in signal processing in whole neuronal networks. The reported evidence derives from mouse models of DS and from brain tissues and neurons derived from individuals with DS. EEG data recorded in individuals with DS are also provided as a key tool to understand the impact of brain circuit alterations on global brain activity.
Collapse
Affiliation(s)
- Renata Bartesaghi
- Department of Biomedical and Neuromotor Sciences, University of Bologna, 40126 Bologna, Italy
| |
Collapse
|
15
|
Altered spontaneous brain activity in Down syndrome and its relation with cognitive outcome. Sci Rep 2022; 12:15410. [PMID: 36104362 PMCID: PMC9474876 DOI: 10.1038/s41598-022-19627-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 08/31/2022] [Indexed: 11/09/2022] Open
Abstract
AbstractAlthough Down syndrome (DS) is the most common genetic cause of neurodevelopmental delay, few neuroimaging studies have explored this population. This investigation aimed to study whole-brain resting-state spontaneous brain activity using fractional amplitude of low-frequency fluctuation (fALFF) and regional homogeneity (ReHo) strategies to find differences in spontaneous brain activity among young people with DS and controls and to correlate these results with cognitive outcomes. The sample comprised 18 persons with DS (age mean = 28.67, standard deviation = 4.18) and 18 controls (age mean = 28.56, standard deviation = 4.26). fALFF and ReHo analyses were performed, and the results were correlated with other cognitive variables also collected (KBIT-2 and verbal fluency test). Increased activity was found in DS using fALFF in areas involving the frontal and temporal lobes and left cerebellum anterior lobe. Decreased activity in DS was found in the left parietal and occipital lobe, the left limbic lobe and the left cerebellum posterior lobe. ReHo analysis showed increased activity in certain DS areas of the left frontal lobe and left rectus, as well as the inferior temporal lobe. The areas with decreased activity in the DS participants were regions of the frontal lobe and the right limbic lobe. Altered fALFF and ReHo were found in the DS population, and this alteration could predict the cognitive abilities of the participants. To our knowledge, this is the first study to explore regional spontaneous brain activity in a population with DS. Moreover, this study suggests the possibility of using fALFF and ReHo as biomarkers of cognitive function, which is highly important given the difficulties in cognitively evaluating this population to assess dementia. More research is needed, however, to demonstrate its utility.
Collapse
|
16
|
Manfredi-Lozano M, Leysen V, Adamo M, Paiva I, Rovera R, Pignat JM, Timzoura FE, Candlish M, Eddarkaoui S, Malone SA, Silva MSB, Trova S, Imbernon M, Decoster L, Cotellessa L, Tena-Sempere M, Claret M, Paoloni-Giacobino A, Plassard D, Paccou E, Vionnet N, Acierno J, Maceski AM, Lutti A, Pfrieger F, Rasika S, Santoni F, Boehm U, Ciofi P, Buée L, Haddjeri N, Boutillier AL, Kuhle J, Messina A, Draganski B, Giacobini P, Pitteloud N, Prevot V. GnRH replacement rescues cognition in Down syndrome. Science 2022; 377:eabq4515. [PMID: 36048943 PMCID: PMC7613827 DOI: 10.1126/science.abq4515] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
At the present time, no viable treatment exists for cognitive and olfactory deficits in Down syndrome (DS). We show in a DS model (Ts65Dn mice) that these progressive nonreproductive neurological symptoms closely parallel a postpubertal decrease in hypothalamic as well as extrahypothalamic expression of a master molecule that controls reproduction-gonadotropin-releasing hormone (GnRH)-and appear related to an imbalance in a microRNA-gene network known to regulate GnRH neuron maturation together with altered hippocampal synaptic transmission. Epigenetic, cellular, chemogenetic, and pharmacological interventions that restore physiological GnRH levels abolish olfactory and cognitive defects in Ts65Dn mice, whereas pulsatile GnRH therapy improves cognition and brain connectivity in adult DS patients. GnRH thus plays a crucial role in olfaction and cognition, and pulsatile GnRH therapy holds promise to improve cognitive deficits in DS.
Collapse
Affiliation(s)
- Maria Manfredi-Lozano
- Univ. Lille, Inserm, CHU Lille, Lille Neuroscience & Cognition, UMR-S 1172, LabexDistAlz, Lille, France
- Laboratory of Development and Plasticity of the Neuroendocrine Brain, FHU 1000 days for health, EGID, Lille, France
| | - Valerie Leysen
- Univ. Lille, Inserm, CHU Lille, Lille Neuroscience & Cognition, UMR-S 1172, LabexDistAlz, Lille, France
- Laboratory of Development and Plasticity of the Neuroendocrine Brain, FHU 1000 days for health, EGID, Lille, France
| | - Michela Adamo
- Department of Endocrinology, Diabetology, and Metabolism, Lausanne University Hospital, 1011 Lausanne, Switzerland
- Faculty of Biology and Medicine, University of Lausanne, Lausanne 1005, Switzerland
| | - Isabel Paiva
- Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), UMR 7364, Université de Strasbourg-CNRS, Strasbourg, France
| | - Renaud Rovera
- Univ. Lyon, Université Claude Bernard Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, Bron 69500, France
| | - Jean-Michel Pignat
- Department of Clinical Neurosciences, Neurorehabilitation Unit, University Hospital CHUV, Lausanne, Switzerland
| | - Fatima Ezzahra Timzoura
- Univ. Lille, Inserm, CHU Lille, Lille Neuroscience & Cognition, UMR-S 1172, LabexDistAlz, Lille, France
- Laboratory of Development and Plasticity of the Neuroendocrine Brain, FHU 1000 days for health, EGID, Lille, France
| | - Michael Candlish
- Experimental Pharmacology, Center for Molecular Signaling (PZMS), Saarland University School of Medicine, 66421, Homburg, Germany
| | - Sabiha Eddarkaoui
- Univ. Lille, Inserm, CHU Lille, Lille Neuroscience & Cognition, UMR-S 1172, LabexDistAlz, Lille, France
| | - Samuel A. Malone
- Univ. Lille, Inserm, CHU Lille, Lille Neuroscience & Cognition, UMR-S 1172, LabexDistAlz, Lille, France
- Laboratory of Development and Plasticity of the Neuroendocrine Brain, FHU 1000 days for health, EGID, Lille, France
| | - Mauro S. B. Silva
- Univ. Lille, Inserm, CHU Lille, Lille Neuroscience & Cognition, UMR-S 1172, LabexDistAlz, Lille, France
- Laboratory of Development and Plasticity of the Neuroendocrine Brain, FHU 1000 days for health, EGID, Lille, France
| | - Sara Trova
- Univ. Lille, Inserm, CHU Lille, Lille Neuroscience & Cognition, UMR-S 1172, LabexDistAlz, Lille, France
- Laboratory of Development and Plasticity of the Neuroendocrine Brain, FHU 1000 days for health, EGID, Lille, France
| | - Monica Imbernon
- Univ. Lille, Inserm, CHU Lille, Lille Neuroscience & Cognition, UMR-S 1172, LabexDistAlz, Lille, France
- Laboratory of Development and Plasticity of the Neuroendocrine Brain, FHU 1000 days for health, EGID, Lille, France
| | - Laurine Decoster
- Univ. Lille, Inserm, CHU Lille, Lille Neuroscience & Cognition, UMR-S 1172, LabexDistAlz, Lille, France
- Laboratory of Development and Plasticity of the Neuroendocrine Brain, FHU 1000 days for health, EGID, Lille, France
| | - Ludovica Cotellessa
- Univ. Lille, Inserm, CHU Lille, Lille Neuroscience & Cognition, UMR-S 1172, LabexDistAlz, Lille, France
- Laboratory of Development and Plasticity of the Neuroendocrine Brain, FHU 1000 days for health, EGID, Lille, France
| | - Manuel Tena-Sempere
- Univ. Cordoba, IMIBC/HURS, CIBER Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Cordoba, Spain
| | - Marc Claret
- Neuronal Control of Metabolism Laboratory, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain; Centro de Investigación Biomédica en Red (CIBER) de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), 08036 Barcelona, Spain
| | - Ariane Paoloni-Giacobino
- Department of Genetic Medicine, University Hospitals of Geneva, 4 rue Gabrielle-Perret-Gentil, 1211, Genève 14, Switzerland
| | - Damien Plassard
- CNRS UMR 7104, INSERM U1258, GenomEast Platform, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg, Illkirch, France
| | - Emmanuelle Paccou
- Department of Endocrinology, Diabetology, and Metabolism, Lausanne University Hospital, 1011 Lausanne, Switzerland
| | - Nathalie Vionnet
- Department of Endocrinology, Diabetology, and Metabolism, Lausanne University Hospital, 1011 Lausanne, Switzerland
| | - James Acierno
- Department of Endocrinology, Diabetology, and Metabolism, Lausanne University Hospital, 1011 Lausanne, Switzerland
| | - Aleksandra Maleska Maceski
- Neurologic Clinic and Polyclinic, MS Centre and Research Centre for Clinical Neuroimmunology and Neuroscience Basel; University Hospital Basel, University of Basel, Basel Switzerland
| | - Antoine Lutti
- Laboratory for Research in Neuroimaging LREN, Centre for Research in Neurosciences, Department of Clinical Neurosciences, Lausanne University Hospital and University of Lausanne, Switzerland
| | - Frank Pfrieger
- Centre National de la Recherche Scientifique, Université de Strasbourg, Institut des Neurosciences Cellulaires et Intégratives, 67000 Strasbourg, France
| | - S. Rasika
- Univ. Lille, Inserm, CHU Lille, Lille Neuroscience & Cognition, UMR-S 1172, LabexDistAlz, Lille, France
- Laboratory of Development and Plasticity of the Neuroendocrine Brain, FHU 1000 days for health, EGID, Lille, France
| | - Federico Santoni
- Faculty of Biology and Medicine, University of Lausanne, Lausanne 1005, Switzerland
| | - Ulrich Boehm
- Experimental Pharmacology, Center for Molecular Signaling (PZMS), Saarland University School of Medicine, 66421, Homburg, Germany
| | - Philippe Ciofi
- Univ. Bordeaux, Inserm, U1215, Neurocentre Magendie, Bordeaux, France
| | - Luc Buée
- Univ. Lille, Inserm, CHU Lille, Lille Neuroscience & Cognition, UMR-S 1172, LabexDistAlz, Lille, France
| | - Nasser Haddjeri
- Univ. Lyon, Université Claude Bernard Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, Bron 69500, France
| | - Anne-Laurence Boutillier
- Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), UMR 7364, Université de Strasbourg-CNRS, Strasbourg, France
| | - Jens Kuhle
- Neurologic Clinic and Polyclinic, MS Centre and Research Centre for Clinical Neuroimmunology and Neuroscience Basel; University Hospital Basel, University of Basel, Basel Switzerland
| | - Andrea Messina
- Department of Endocrinology, Diabetology, and Metabolism, Lausanne University Hospital, 1011 Lausanne, Switzerland
- Faculty of Biology and Medicine, University of Lausanne, Lausanne 1005, Switzerland
| | - Bogdan Draganski
- Laboratory for Research in Neuroimaging LREN, Centre for Research in Neurosciences, Department of Clinical Neurosciences, Lausanne University Hospital and University of Lausanne, Switzerland
- Neurology Department, Max-Planck-Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
| | - Paolo Giacobini
- Univ. Lille, Inserm, CHU Lille, Lille Neuroscience & Cognition, UMR-S 1172, LabexDistAlz, Lille, France
- Laboratory of Development and Plasticity of the Neuroendocrine Brain, FHU 1000 days for health, EGID, Lille, France
| | - Nelly Pitteloud
- Department of Endocrinology, Diabetology, and Metabolism, Lausanne University Hospital, 1011 Lausanne, Switzerland
- Faculty of Biology and Medicine, University of Lausanne, Lausanne 1005, Switzerland
| | - Vincent Prevot
- Univ. Lille, Inserm, CHU Lille, Lille Neuroscience & Cognition, UMR-S 1172, LabexDistAlz, Lille, France
- Laboratory of Development and Plasticity of the Neuroendocrine Brain, FHU 1000 days for health, EGID, Lille, France
| |
Collapse
|
17
|
Alemany-González M, Vilademunt M, Gener T, Puig MV. Postnatal environmental enrichment enhances memory through distinct neural mechanisms in healthy and trisomic female mice. Neurobiol Dis 2022; 173:105841. [PMID: 35988873 DOI: 10.1016/j.nbd.2022.105841] [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: 06/09/2022] [Revised: 08/12/2022] [Accepted: 08/15/2022] [Indexed: 10/15/2022] Open
Abstract
Stimulating lifestyles have powerful effects on cognitive abilities, especially when they are experienced early in life. Cognitive therapies are widely used to improve cognitive impairment due to intellectual disability, aging, and neurodegeneration, however the underlying neural mechanisms are poorly understood. We investigated the neural correlates of memory amelioration produced by postnatal environmental enrichment (EE) in diploid mice and the Ts65Dn mouse model of Down syndrome (trisomy 21). We recorded neural activities in brain structures key for memory processing, the hippocampus and the prefrontal cortex, during rest, sleep and memory performance in mice reared in non-enriched or enriched environments. Enriched wild-type animals exhibited enhanced neural synchrony in the hippocampus across different brain states (increased gamma oscillations, theta-gamma coupling, sleep ripples). Trisomic females showed increased theta and gamma rhythms in the hippocampus and prefrontal cortex across different brain states along with enlarged ripples and disrupted circuit gamma signals that were associated with memory deficits. These pathological activities were attenuated in their trisomic EE-reared peers. Our results suggest distinct neural mechanisms for the generation and rescue of healthy and pathological brain synchrony, respectively, by EE and put forward hippocampal-prefrontal hypersynchrony and miscommunication as major targets underlying the beneficial effects of EE in intellectual disability.
Collapse
Affiliation(s)
- Maria Alemany-González
- Integrative Pharmacology and Systems Neuroscience, Hospital del Mar Medical Research Institute, Barcelona Biomedical Research Park, 08003 Barcelona, Spain
| | - Marta Vilademunt
- Integrative Pharmacology and Systems Neuroscience, Hospital del Mar Medical Research Institute, Barcelona Biomedical Research Park, 08003 Barcelona, Spain
| | - Thomas Gener
- Integrative Pharmacology and Systems Neuroscience, Hospital del Mar Medical Research Institute, Barcelona Biomedical Research Park, 08003 Barcelona, Spain; Catalan Institute of Nanoscience and Nanotechnology (ICN2), the Barcelona Institute of Science and Technology (BIST), Campus UAB, Bellaterra, 08193 Barcelona, Spain; Institut de Neurociències, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain
| | - M Victoria Puig
- Integrative Pharmacology and Systems Neuroscience, Hospital del Mar Medical Research Institute, Barcelona Biomedical Research Park, 08003 Barcelona, Spain; Catalan Institute of Nanoscience and Nanotechnology (ICN2), the Barcelona Institute of Science and Technology (BIST), Campus UAB, Bellaterra, 08193 Barcelona, Spain; Institut de Neurociències, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain.
| |
Collapse
|
18
|
Csumitta KD, Gotts SJ, Clasen LS, Martin A, Raitano Lee N. Youth with Down syndrome display widespread increased functional connectivity during rest. Sci Rep 2022; 12:9836. [PMID: 35701489 PMCID: PMC9198034 DOI: 10.1038/s41598-022-13437-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 05/16/2022] [Indexed: 12/31/2022] Open
Abstract
Studies of resting-state functional connectivity in young people with Down syndrome (DS) have yielded conflicting results. Some studies have found increased connectivity while others have found a mix of increased and decreased connectivity. No studies have examined whole-brain connectivity at the voxel level in youth with DS during an eyes-open resting-state design. Additionally, no studies have examined the relationship between connectivity and network selectivity in youth with DS. Thus, the current study sought to fill this gap in the literature. Nineteen youth with DS (Mage = 16.5; range 7-23; 13 F) and 33 typically developing (TD) youth (Mage = 17.5; range 6-24; 18 F), matched on age and sex, completed a 5.25-min eyes-open resting-state fMRI scan. Whole-brain functional connectivity (average Pearson correlation of each voxel with every other voxel) was calculated for each individual and compared between groups. Network selectivity was then calculated and correlated with functional connectivity for the DS group. Results revealed that whole-brain functional connectivity was significantly higher in youth with DS compared to TD controls in widespread regions throughout the brain. Additionally, participants with DS had significantly reduced network selectivity compared to TD peers, and selectivity was significantly related to connectivity in all participants. Exploratory behavioral analyses revealed that regions showing increased connectivity in DS predicted Verbal IQ, suggesting differences in connectivity may be related to verbal abilities. These results indicate that network organization is disrupted in youth with DS such that disparate networks are overly connected and less selective, suggesting a potential target for clinical interventions.
Collapse
Affiliation(s)
- Kelsey D Csumitta
- Department of Psychological and Brain Sciences, Drexel University, Philadelphia, PA, 19103, USA.
| | - Stephen J Gotts
- Section on Cognitive Neuropsychology, Laboratory of Brain and Cognition, National Institute of Mental Health, National Institutes of Health, Bethesda, MD, USA
| | - Liv S Clasen
- Section on Developmental Neurogenomics, Human Genetics Branch, National Institute of Mental Health, National Institutes of Health, Bethesda, MD, USA
| | - Alex Martin
- Section on Cognitive Neuropsychology, Laboratory of Brain and Cognition, National Institute of Mental Health, National Institutes of Health, Bethesda, MD, USA
| | - Nancy Raitano Lee
- Department of Psychological and Brain Sciences, Drexel University, Philadelphia, PA, 19103, USA.
| |
Collapse
|
19
|
Ponroy Bally B, Murai KK. Astrocytes in Down Syndrome Across the Lifespan. Front Cell Neurosci 2021; 15:702685. [PMID: 34483840 PMCID: PMC8416355 DOI: 10.3389/fncel.2021.702685] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 07/30/2021] [Indexed: 11/23/2022] Open
Abstract
Down Syndrome (DS) is the most common genetic cause of intellectual disability in which delays and impairments in brain development and function lead to neurological and cognitive phenotypes. Traditionally, a neurocentric approach, focusing on neurons and their connectivity, has been applied to understanding the mechanisms involved in DS brain pathophysiology with an emphasis on how triplication of chromosome 21 leads to alterations in neuronal survival and homeostasis, synaptogenesis, brain circuit development, and neurodegeneration. However, recent studies have drawn attention to the role of non-neuronal cells, especially astrocytes, in DS. Astrocytes comprise a large proportion of cells in the central nervous system (CNS) and are critical for brain development, homeostasis, and function. As triplication of chromosome 21 occurs in all cells in DS (with the exception of mosaic DS), a deeper understanding of the impact of trisomy 21 on astrocytes in DS pathophysiology is warranted and will likely be necessary for determining how specific brain alterations and neurological phenotypes emerge and progress in DS. Here, we review the current understanding of the role of astrocytes in DS, and discuss how specific perturbations in this cell type can impact the brain across the lifespan from early brain development to adult stages. Finally, we highlight how targeting, modifying, and/or correcting specific molecular pathways and properties of astrocytes in DS may provide an effective therapeutic direction given the important role of astrocytes in regulating brain development and function.
Collapse
Affiliation(s)
- Blandine Ponroy Bally
- Centre for Research in Neuroscience, Department of Neurology and Neurosurgery, Brain Repair and Integrative Neuroscience Program, Research Institute of the McGill University Health Centre, Montreal General Hospital, Montreal, QC, Canada
| | - Keith K Murai
- Centre for Research in Neuroscience, Department of Neurology and Neurosurgery, Brain Repair and Integrative Neuroscience Program, Research Institute of the McGill University Health Centre, Montreal General Hospital, Montreal, QC, Canada
| |
Collapse
|
20
|
Koenig KA, Bekris LM, Ruedrich S, Weber GE, Khrestian M, Oh SH, Kim S, Wang ZI, Leverenz JB. High-resolution functional connectivity of the default mode network in young adults with down syndrome. Brain Imaging Behav 2021; 15:2051-2060. [PMID: 33070299 PMCID: PMC8053201 DOI: 10.1007/s11682-020-00399-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/07/2020] [Indexed: 10/23/2022]
Abstract
Studies of resting-state functional connectivity MRI in Alzheimer's disease suggest that disease stage plays a role in functional changes of the default mode network. Individuals with the genetic disorder Down syndrome show an increased incidence of early-onset Alzheimer's-type dementia, along with early and nearly universal neuropathologic changes of Alzheimer's disease. The present study examined high-resolution functional connectivity of the default mode network in 11 young adults with Down syndrome that showed no measurable symptoms of dementia and 11 age- and sex-matched neurotypical controls. We focused on within-network connectivity of the default mode network, measured from both anterior and posterior aspects of the cingulate cortex. Sixty-eight percent of connections to the posterior cingulate and 26% to the anterior cingulate showed reduced strength in the group with Down syndrome (p < 0.01). The Down syndrome group showed increased connectivity strength from the anterior cingulate to the bilateral inferior frontal gyri and right putamen (p < 0.005). In an exploratory analysis, connectivity in the group with Down syndrome showed regional relationships to plasma measures of inflammatory markers and t-tau. In non-demented adults with Down syndrome, functional connectivity within the default mode network may be analogous to changes reported in preclinical Alzheimer's disease, and warrants further investigation as a measure of dementia risk.
Collapse
Affiliation(s)
- Katherine A Koenig
- Imaging Sciences, Imaging Institute, Cleveland Clinic, 9500 Euclid Ave / U15, Cleveland, OH, 44195, USA.
| | - Lynn M Bekris
- Genomic Medicine Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Stephen Ruedrich
- Department of Psychiatry, University Hospitals, Cleveland, OH, USA
| | - Grace E Weber
- Genomic Medicine Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Maria Khrestian
- Genomic Medicine Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Se-Hong Oh
- Imaging Sciences, Imaging Institute, Cleveland Clinic, 9500 Euclid Ave / U15, Cleveland, OH, 44195, USA
- Department of Biomedical Engineering, Hankuk University of Foreign Studies, Yongin, Republic of Korea
| | - Sanghoon Kim
- Imaging Sciences, Imaging Institute, Cleveland Clinic, 9500 Euclid Ave / U15, Cleveland, OH, 44195, USA
| | - Z Irene Wang
- Epilepsy Center, Neurological Institute, Cleveland Clinic, Cleveland, OH, USA
| | - James B Leverenz
- Lou Ruvo Center for Brain Health, Neurological Institute, Cleveland Clinic, Cleveland, OH, USA
| |
Collapse
|
21
|
Whitman ET, Liu S, Torres E, Warling A, Wilson K, Nadig A, McDermott C, Clasen LS, Blumenthal JD, Lalonde FM, Gotts SJ, Martin A, Raznahan A. Resting-State Functional Connectivity and Psychopathology in Klinefelter Syndrome (47, XXY). Cereb Cortex 2021; 31:4180-4190. [PMID: 34009243 PMCID: PMC8485146 DOI: 10.1093/cercor/bhab077] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Klinefelter syndrome (47, XXY; henceforth: XXY syndrome) is a high-impact but poorly understood genetic risk factor for neuropsychiatric impairment. Here, we provide the first study to map alterations of functional brain connectivity in XXY syndrome and relate these changes to brain anatomy and psychopathology. We used resting-state functional magnetic resonance imaging data from 75 individuals with XXY and 84 healthy XY males to 1) implement a brain-wide screen for altered global resting-state functional connectivity (rsFC) in XXY versus XY males and 2) decompose these alterations through seed-based analysis. We then compared these rsFC findings with measures of regional brain anatomy, psychopathology, and cognition. XXY syndrome was characterized by increased global rsFC in the left dorsolateral prefrontal cortex (DLPFC)-reflecting DLPFC overconnectivity with diverse rsFC networks. Functional overconnectivity was partly coupled to co-occurring regional volumetric changes in XXY syndrome, and variation in DLPFC-precuneus rsFC was correlated with the severity of psychopathology. By providing the first view of altered rsFC in XXY syndrome and contextualizing observed changes relative to neuroanatomy and behavior, our study helps to advance biological understanding of XXY syndrome-both as a disorder in its own right and more broadly as a model of genetic risk for psychopathology.
Collapse
Affiliation(s)
- Ethan T Whitman
- Section on Developmental Neurogenomics, Human Genetics Branch, National Institute of Mental Health, Bethesda, MD 20814, USA
| | - Siyuan Liu
- Section on Developmental Neurogenomics, Human Genetics Branch, National Institute of Mental Health, Bethesda, MD 20814, USA
| | - Erin Torres
- Section on Developmental Neurogenomics, Human Genetics Branch, National Institute of Mental Health, Bethesda, MD 20814, USA
| | - Allysa Warling
- Section on Developmental Neurogenomics, Human Genetics Branch, National Institute of Mental Health, Bethesda, MD 20814, USA
| | - Kathleen Wilson
- Section on Developmental Neurogenomics, Human Genetics Branch, National Institute of Mental Health, Bethesda, MD 20814, USA
| | - Ajay Nadig
- Section on Developmental Neurogenomics, Human Genetics Branch, National Institute of Mental Health, Bethesda, MD 20814, USA
| | - Cassidy McDermott
- Section on Developmental Neurogenomics, Human Genetics Branch, National Institute of Mental Health, Bethesda, MD 20814, USA
| | - Liv S Clasen
- Section on Developmental Neurogenomics, Human Genetics Branch, National Institute of Mental Health, Bethesda, MD 20814, USA
| | - Jonathan D Blumenthal
- Section on Developmental Neurogenomics, Human Genetics Branch, National Institute of Mental Health, Bethesda, MD 20814, USA
| | - François M Lalonde
- Section on Developmental Neurogenomics, Human Genetics Branch, National Institute of Mental Health, Bethesda, MD 20814, USA
| | - Stephen J Gotts
- Section on Cognitive Neuropsychology, Laboratory of Brain and Cognition, National Institute of Mental Health, Bethesda, MD 20814, USA
| | - Alex Martin
- Section on Cognitive Neuropsychology, Laboratory of Brain and Cognition, National Institute of Mental Health, Bethesda, MD 20814, USA
| | - Armin Raznahan
- Section on Developmental Neurogenomics, Human Genetics Branch, National Institute of Mental Health, Bethesda, MD 20814, USA
| |
Collapse
|
22
|
Ramírez-Toraño F, García-Alba J, Bruña R, Esteba-Castillo S, Vaquero L, Pereda E, Maestú F, Fernández A. Hypersynchronized Magnetoencephalography Brain Networks in Patients with Mild Cognitive Impairment and Alzheimer's Disease in Down Syndrome. Brain Connect 2021; 11:725-733. [PMID: 33858203 DOI: 10.1089/brain.2020.0897] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Introduction: The majority of individuals with Down syndrome (DS) show signs of Alzheimer's disease (AD) neuropathology in their fourth decade. However, there is a lack of specific markers for characterizing the disease stages while considering this population's differential features. Methods: Forty-one DS individuals participated in the study, and were classified into three groups according to their clinical status: Alzheimer's disease (AD-DS), mild cognitive impairment (MCI-DS), and controls (CN-DS). We performed an exhaustive neuropsychological evaluation and assessed brain functional connectivity (FC) from magnetoencephalographic recordings. Results: Compared with CN-DS, both MCI-DS and AD-DS showed a pattern of increased FC within the high alpha band. The neuropsychological assessment showed a generalized cognitive impairment, especially affecting mnestic functions, in MCI-DS and, more pronouncedly, in AD-DS. Discussion: These findings might help to characterize the AD-continuum in DS. In addition, they support the role of the excitatory/inhibitory imbalance as a key pathophysiological factor in AD. Impact statement The pattern of functional connectivity (FC) hypersynchronization found in this study resembles the largely reported Alzheimer's disease (AD) FC evolution pattern in population with typical development. This study supports the hypothesis of the excitatory/inhibitory imbalance as a key pathophysiological factor in AD, and its conclusions could help in the characterization and prediction of Down syndrome individuals with a greater likelihood of converting to dementia.
Collapse
Affiliation(s)
- Federico Ramírez-Toraño
- Laboratory of Cognitive and Computational Neuroscience (UCM-UPM), Center for Biomedical Technology, Technical University of Madrid, Madrid, Spain.,Department of Experimental Psychology, Universidad Complutense de Madrid, Madrid, Spain
| | - Javier García-Alba
- Laboratory of Cognitive and Computational Neuroscience (UCM-UPM), Center for Biomedical Technology, Technical University of Madrid, Madrid, Spain.,Research and Psychology in Education Department, Complutense University of Madrid, Madrid, Spain
| | - Ricardo Bruña
- Laboratory of Cognitive and Computational Neuroscience (UCM-UPM), Center for Biomedical Technology, Technical University of Madrid, Madrid, Spain.,Department of Experimental Psychology, Universidad Complutense de Madrid, Madrid, Spain.,Networking Research Center on Bioengineering, Biomaterials, and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Susanna Esteba-Castillo
- Specialized Department in Mental Health and Intellectual Disability, Parc Hospitalari Martí i Julià-Institut 'd'Assistència Sanitària, Institut 'd'Assistència Sanitària (IAS), Girona, Spain
| | - Lucía Vaquero
- Laboratory of Cognitive and Computational Neuroscience (UCM-UPM), Center for Biomedical Technology, Technical University of Madrid, Madrid, Spain.,Department of Legal Medicine, Psychiatry and Pathology, Complutense University of Madrid, Spain
| | - Ernesto Pereda
- Laboratory of Cognitive and Computational Neuroscience (UCM-UPM), Center for Biomedical Technology, Technical University of Madrid, Madrid, Spain.,Electrical Engineering and Bioengineering Group, Department of Industrial Engineering and IUNE and ITB Universidad de La Laguna, Santa Cruz de Tenerife, Spain
| | - Fernando Maestú
- Laboratory of Cognitive and Computational Neuroscience (UCM-UPM), Center for Biomedical Technology, Technical University of Madrid, Madrid, Spain.,Department of Experimental Psychology, Universidad Complutense de Madrid, Madrid, Spain.,Networking Research Center on Bioengineering, Biomaterials, and Nanomedicine (CIBER-BBN), Madrid, Spain
| | - Alberto Fernández
- Laboratory of Cognitive and Computational Neuroscience (UCM-UPM), Center for Biomedical Technology, Technical University of Madrid, Madrid, Spain.,Department of Legal Medicine, Psychiatry and Pathology, Complutense University of Madrid, Spain.,Institute of Sanitary Investigation (IdISSC), San Carlos University Hospital, Madrid, Spain
| |
Collapse
|
23
|
Is there a “g-neuron”? Establishing a systematic link between general intelligence (g) and the von Economo neuron. INTELLIGENCE 2021. [DOI: 10.1016/j.intell.2021.101540] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
24
|
Koenig KA, Oh SH, Stasko MR, Roth EC, Taylor HG, Ruedrich S, Wang ZI, Leverenz JB, Costa ACS. High resolution structural and functional MRI of the hippocampus in young adults with Down syndrome. Brain Commun 2021; 3:fcab088. [PMID: 33977271 PMCID: PMC8100000 DOI: 10.1093/braincomms/fcab088] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 02/19/2021] [Accepted: 03/22/2021] [Indexed: 11/29/2022] Open
Abstract
Down syndrome is the phenotypic consequence of trisomy 21, with clinical presentation including both neurodevelopmental and neurodegenerative components. Although the intellectual disability typically displayed by individuals with Down syndrome is generally global, it also involves disproportionate deficits in hippocampally-mediated cognitive processes. Hippocampal dysfunction may also relate to Alzheimer’s disease-type pathology, which can appear in as early as the first decade of life and becomes universal by age 40. Using 7-tesla MRI of the brain, we present an assessment of the structure and function of the hippocampus in 34 individuals with Down syndrome (mean age 24.5 years ± 6.5) and 27 age- and sex-matched typically developing healthy controls. In addition to increased whole-brain mean cortical thickness and lateral ventricle volumes (P < 1.0 × 10−4), individuals with Down syndrome showed selective volume reductions in bilateral hippocampal subfields cornu Ammonis field 1, dentate gyrus, and tail (P < 0.005). In the group with Down syndrome, bilateral hippocampi showed widespread reductions in the strength of functional connectivity, predominately to frontal regions (P < 0.02). Age was not related to hippocampal volumes or functional connectivity measures in either group, but both groups showed similar relationships of age to whole-brain volume measures (P < 0.05). Finally, we performed an exploratory analysis of a subgroup of individuals with Down syndrome with both imaging and neuropsychological assessments. This analysis indicated that measures of spatial memory were related to mean cortical thickness, total grey matter volume and right hemisphere hippocampal subfield volumes (P < 0.02). This work provides a first demonstration of the usefulness of high-field MRI to detect subtle differences in structure and function of the hippocampus in individuals with Down syndrome, and suggests the potential for development of MRI-derived measures as surrogate markers of drug efficacy in pharmacological studies designed to investigate enhancement of cognitive function.
Collapse
Affiliation(s)
- Katherine A Koenig
- Imaging Sciences, Imaging Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Se-Hong Oh
- Imaging Sciences, Imaging Institute, Cleveland Clinic, Cleveland, OH 44195, USA.,Department of Biomedical Engineering, Hankuk University of Foreign Studies, Yongin 449-791, Republic of Korea
| | - Melissa R Stasko
- Department of Pediatrics, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Elizabeth C Roth
- Department of Pediatrics, Case Western Reserve University, Cleveland, OH 44106, USA
| | - H Gerry Taylor
- Abigail Wexner Research Institute at Nationwide Children's Hospital, and Department of Pediatrics, The Ohio State University, Columbus, OH 43215, USA
| | - Stephen Ruedrich
- Department of Psychiatry, University Hospitals, Cleveland, OH 44106, USA
| | - Z Irene Wang
- Epilepsy Center, Neurological Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - James B Leverenz
- Lou Ruvo Center for Brain Health, Neurological Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Alberto C S Costa
- Department of Pediatrics, Case Western Reserve University, Cleveland, OH 44106, USA.,Department of Psychiatry, University Hospitals, Cleveland, OH 44106, USA
| |
Collapse
|
25
|
Complexity Analysis of the Default Mode Network Using Resting-State fMRI in Down Syndrome: Relationships Highlighted by a Neuropsychological Assessment. Brain Sci 2021; 11:brainsci11030311. [PMID: 33801471 PMCID: PMC8001398 DOI: 10.3390/brainsci11030311] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 02/21/2021] [Accepted: 02/25/2021] [Indexed: 01/04/2023] Open
Abstract
Background: Studies on complexity indicators in the field of functional connectivity derived from resting-state fMRI (rs-fMRI) in Down syndrome (DS) samples and their possible relationship with cognitive functioning variables are rare. We analyze how some complexity indicators estimated in the subareas that constitute the default mode network (DMN) might be predictors of the neuropsychological outcomes evaluating Intelligence Quotient (IQ) and cognitive performance in persons with DS. Methods: Twenty-two DS people were assessed with the Kaufman Brief Test of Intelligence (KBIT) and Frontal Assessment Battery (FAB) tests, and fMRI signals were recorded in a resting state over a six-minute period. In addition, 22 controls, matched by age and sex, were evaluated with the same rs-fMRI procedure. Results: There was a significant difference in complexity indicators between groups: the control group showed less complexity than the DS group. Moreover, the DS group showed more variance in the complexity indicator distributions than the control group. In the DS group, significant and negative relationships were found between some of the complexity indicators in some of the DMN networks and the cognitive performance scores. Conclusions: The DS group is characterized by more complex DMN networks and exhibits an inverse relationship between complexity and cognitive performance based on the negative parameter estimates.
Collapse
|
26
|
Anagnostopoulou A, Styliadis C, Kartsidis P, Romanopoulou E, Zilidou V, Karali C, Karagianni M, Klados M, Paraskevopoulos E, Bamidis PD. Computerized physical and cognitive training improves the functional architecture of the brain in adults with Down syndrome: A network science EEG study. Netw Neurosci 2021; 5:274-294. [PMID: 33688615 PMCID: PMC7935030 DOI: 10.1162/netn_a_00177] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 12/01/2020] [Indexed: 01/31/2023] Open
Abstract
Understanding the neuroplastic capacity of people with Down syndrome (PwDS) can potentially reveal the causal relationship between aberrant brain organization and phenotypic characteristics. We used resting-state EEG recordings to identify how a neuroplasticity-triggering training protocol relates to changes in the functional connectivity of the brain's intrinsic cortical networks. Brain activity of 12 PwDS before and after a 10-week protocol of combined physical and cognitive training was statistically compared to quantify changes in directed functional connectivity in conjunction with psychosomatometric assessments. PwDS showed increased connectivity within the left hemisphere and from left-to-right hemisphere, as well as increased physical and cognitive performance. Our findings reveal a strong adaptive neuroplastic reorganization as a result of the training that leads to a less-random network with a more pronounced hierarchical organization. Our results go beyond previous findings by indicating a transition to a healthier, more efficient, and flexible network architecture, with improved integration and segregation abilities in the brain of PwDS. Resting-state electrophysiological brain activity is used here for the first time to display meaningful relationships to underlying Down syndrome processes and outcomes of importance in a translational inquiry. This trial is registered with ClinicalTrials.gov Identifier NCT04390321.
Collapse
Affiliation(s)
- Alexandra Anagnostopoulou
- Medical Physics Laboratory, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Greece
| | - Charis Styliadis
- Medical Physics Laboratory, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Greece
| | - Panagiotis Kartsidis
- Medical Physics Laboratory, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Greece
| | - Evangelia Romanopoulou
- Medical Physics Laboratory, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Greece
| | - Vasiliki Zilidou
- Medical Physics Laboratory, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Greece
| | - Chrysi Karali
- School of Biology, Faculty of Science, Aristotle University of Thessaloniki, Greece
| | - Maria Karagianni
- Medical Physics Laboratory, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Greece
| | - Manousos Klados
- Department of Psychology, The University of Sheffield International Faculty, City College, Thessaloniki, Greece
| | - Evangelos Paraskevopoulos
- Medical Physics Laboratory, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Greece
| | - Panagiotis D Bamidis
- Medical Physics Laboratory, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Greece
| |
Collapse
|
27
|
Figueroa-Jimenez MD, Cañete-Massé C, Carbó-Carreté M, Zarabozo-Hurtado D, Peró-Cebollero M, Salazar-Estrada JG, Guàrdia-Olmos J. Resting-state default mode network connectivity in young individuals with Down syndrome. Brain Behav 2021; 11:e01905. [PMID: 33179859 PMCID: PMC7821605 DOI: 10.1002/brb3.1905] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 09/24/2020] [Accepted: 10/02/2020] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Down syndrome (DS) is a chromosomal disorder that causes intellectual disability. Few studies have been conducted on functional connectivity using resting-state fMRI (functional magnetic resonance imaging) signals or more specifically, on the relevant structure and density of the default mode network (DMN). Although data on this issue have been reported in adult DS individuals (age: >45 years), the DMN properties in young DS individuals have not been studied. The aim of this study was to describe the density and structure of the DMN network from fMRI signals in young DS (age: <36 years). METHOD A sample of 22 young people with DS between the ages of 16 and 35 (M = 25.5 and SD = 5.1) was recruited in various centers for people with intellectual disability (ID). In addition to sociodemographic data, a six-minute fMRI session was recorded with a 3. T Philips Ingenia scanner. A control group of 22 young people, matched by age and gender, was obtained from the Human Connectome Project (to compare the networks properties between groups). RESULTS The values of the 48 ROIs that configured the DMN were obtained, and the connectivity graphs for each subject, the average connectivity graph for each group, the clustering and degree values for each ROI, and the average functional connectivity network were estimated. CONCLUSIONS A higher density of overactivation was identified in DS group in the ventral, sensorimotor, and visual DMN networks, although within a framework of a wide variability of connectivity patterns in comparison with the control group network. These results extend our understanding of the functional connectivity networks pattern and intrasubject variability in DS.
Collapse
Affiliation(s)
| | - Cristina Cañete-Massé
- Department of Social Psychology & Quantitative Psychology, Faculty of Psychology, University of Barcelona, Barcelona, Spain.,UB Institute of Complex Systems, University of Barcelona, Barcelona, Spain
| | - María Carbó-Carreté
- Institute of Neuroscience, University of Barcelona, Barcelona, Spain.,Department of Cognition, Developmental Psychology and Education, Faculty of Psychology, University of Barcelona, Barcelona, Spain
| | - Daniel Zarabozo-Hurtado
- RIO Group Clinical Laboratory, Center for Research in Advanced Functional Neuro-Diagnosis CINDFA, Guadalajara, México
| | - Maribel Peró-Cebollero
- Department of Social Psychology & Quantitative Psychology, Faculty of Psychology, University of Barcelona, Barcelona, Spain.,UB Institute of Complex Systems, University of Barcelona, Barcelona, Spain.,Institute of Neuroscience, University of Barcelona, Barcelona, Spain
| | | | - Joan Guàrdia-Olmos
- Department of Social Psychology & Quantitative Psychology, Faculty of Psychology, University of Barcelona, Barcelona, Spain.,UB Institute of Complex Systems, University of Barcelona, Barcelona, Spain.,Institute of Neuroscience, University of Barcelona, Barcelona, Spain
| |
Collapse
|
28
|
Piriform cortex alterations in the Ts65Dn model for down syndrome. Brain Res 2020; 1747:147031. [PMID: 32726601 DOI: 10.1016/j.brainres.2020.147031] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 07/02/2020] [Accepted: 07/22/2020] [Indexed: 11/22/2022]
Abstract
The piriform cortex is involved in olfactory information processing, that is altered in Down Syndrome. Moreover, piriform cortex has a crucial involvement in epilepsy generation and is one of the first regions affected in Alzheimer's Disease, both maladies being prevalent among Down Syndrome individuals. In this work, we studied the alterations in neuronal morphology, synaptology and structural plasticity in the piriform cortex of the Ts65Dn mouse model, which is the most used model for the study of this syndrome and mimics some of their alterations. We have observed that Ts65Dn piriform cortex displays: a reduction in dendritic arborisation, a higher density of inhibitory synapses (GAD67), a lower density of excitatory synapses (vGLUT1) and a higher density of inhibitory postsynaptic puncta (gephyrin). Under electron microscopy the excitatory presynaptic and postsynaptic elements were larger in trisomic mice than in controls. Similar results were obtained using confocal microscopy. There were less immature neurons in piriform cortex layer II in addition to a reduction in the expression of PSA-NCAM in the neuropil that subsequently can reflect impairment in structural plasticity. These data support the idea of an impaired environment with altered ratio of inhibition and excitation that involves a reduction in plasticity and dendritic atrophy, providing a possible substrate for the olfactory processing impairment observed in DS individuals.
Collapse
|
29
|
Thompson MD, Martin RC, Grayson LP, Ampah SB, Cutter G, Szaflarski JP, Bebin EM. Cognitive function and adaptive skills after a one-year trial of cannabidiol (CBD) in a pediatric sample with treatment-resistant epilepsy. Epilepsy Behav 2020; 111:107299. [PMID: 32759071 DOI: 10.1016/j.yebeh.2020.107299] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 06/26/2020] [Accepted: 06/28/2020] [Indexed: 01/13/2023]
Abstract
OBJECTIVE Cannabidiol (CBD) is a nonpsychoactive derivative of cannabis. Studies indicate that it is safe and effective in treating certain types of epilepsy. The present study examined the presence of adverse or beneficial cognitive or functional adaptive effects associated with CBD in the treatment of children, adolescents, and teenagers with treatment-resistant epilepsy (TRE) as part of an ongoing prospective, open-label safety study. METHODS Participants (N = 38) between the age of 3 and 19 years with TRE were enrolled in an open-label study of a pharmaceutical formulation of CBD (Epidiolex®; GW Research Ltd.) as an add-on treatment. In addition to baseline physical, neurological, and laboratory testing, cognitive assessment was completed prior to initiating CBD and after one year, both using the NIH Toolbox Cognition Battery (NIHTB-CB). Many participants were unable to complete the NIHTB-CB because of the magnitude of their cognitive impairment (n = 24), and in these cases, the participant's caregiver was asked to complete the Adaptive Behavior Assessment System - Second Edition (ABAS-II) as a measure of functional adaptive skills. RESULTS There were no statistically significant changes in cognitive function, as measured by the NIHTB-CB, in those participants who were able to complete such testing, but there was a nonsignificant trend toward improvement in some cognitive domains. For participants who were unable to complete formal standardized cognitive testing because of the magnitude of their cognitive impairment, their functional adaptive skills, as measured by the ABAS-II, were unchanged after a one-year trial of CBD. SIGNIFICANCE Our findings suggest that CBD, as an add-on drug for TRE in a pediatric sample, does not appear to cause adverse effects (AEs) involving cognition or adaptive function over one year of treatment.
Collapse
Affiliation(s)
- Matthew D Thompson
- Children's of Alabama, 1600 7th Avenue South, Birmingham, AL 35233, USA.
| | - Roy C Martin
- University of Alabama at Birmingham, Department of Neurology, 1720 7th Avenue South, Birmingham, AL 35233, USA
| | - Leslie P Grayson
- University of Alabama at Birmingham, Department of Neurology, 1720 7th Avenue South, Birmingham, AL 35233, USA
| | - Steve B Ampah
- University of Alabama at Birmingham, Department of Biostatistics, 1665 University Boulevard #327, Birmingham, AL 35233, USA
| | - Gary Cutter
- University of Alabama at Birmingham, Department of Biostatistics, 1665 University Boulevard #327, Birmingham, AL 35233, USA
| | - Jerzy P Szaflarski
- University of Alabama at Birmingham, Department of Neurology, 1720 7th Avenue South, Birmingham, AL 35233, USA
| | - E Martina Bebin
- University of Alabama at Birmingham, Department of Neurology, 1720 7th Avenue South, Birmingham, AL 35233, USA
| |
Collapse
|
30
|
Thomas MSC, Ojinaga Alfageme O, D'Souza H, Patkee PA, Rutherford MA, Mok KY, Hardy J, Karmiloff-Smith A. A multi-level developmental approach to exploring individual differences in Down syndrome: genes, brain, behaviour, and environment. RESEARCH IN DEVELOPMENTAL DISABILITIES 2020; 104:103638. [PMID: 32653761 PMCID: PMC7438975 DOI: 10.1016/j.ridd.2020.103638] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 03/18/2020] [Accepted: 03/20/2020] [Indexed: 05/06/2023]
Abstract
In this article, we focus on the causes of individual differences in Down syndrome (DS), exemplifying the multi-level, multi-method, lifespan developmental approach advocated by Karmiloff-Smith (1998, 2009, 2012, 2016). We evaluate the possibility of linking variations in infant and child development with variations in the (elevated) risk for Alzheimer's disease (AD) in adults with DS. We review the theoretical basis for this argument, considering genetics, epigenetics, brain, behaviour and environment. In studies 1 and 2, we focus on variation in language development. We utilise data from the MacArthur-Bates Communicative Development Inventories (CDI; Fenson et al., 2007), and Mullen Scales of Early Learning (MSEL) receptive and productive language subscales (Mullen, 1995) from 84 infants and children with DS (mean age 2;3, range 0;7 to 5;3). As expected, there was developmental delay in both receptive and expressive vocabulary and wide individual differences. Study 1 examined the influence of an environmental measure (socio-economic status as measured by parental occupation) on the observed variability. SES did not predict a reliable amount of the variation. Study 2 examined the predictive power of a specific genetic measure (apolipoprotein APOE genotype) which modulates risk for AD in adulthood. There was no reliable effect of APOE genotype, though weak evidence that development was faster for the genotype conferring greater AD risk (ε4 carriers), consistent with recent observations in infant attention (D'Souza, Mason et al., 2020). Study 3 considered the concerted effect of the DS genotype on early brain development. We describe new magnetic resonance imaging methods for measuring prenatal and neonatal brain structure in DS (e.g., volumes of supratentorial brain, cortex, cerebellar volume; Patkee et al., 2019). We establish the methodological viability of linking differences in early brain structure to measures of infant cognitive development, measured by the MSEL, as a potential early marker of clinical relevance. Five case studies are presented as proof of concept, but these are as yet too few to discern a pattern.
Collapse
Affiliation(s)
- Michael S C Thomas
- Centre for Brain and Cognitive Development, Birkbeck, University of London, London WC1E 7HX, United Kingdom.
| | - Olatz Ojinaga Alfageme
- Centre for Brain and Cognitive Development, Birkbeck, University of London, London WC1E 7HX, United Kingdom; Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, St. Thomas's Hospital, London, SE1 7EH, United Kingdom
| | - Hana D'Souza
- Centre for Brain and Cognitive Development, Birkbeck, University of London, London WC1E 7HX, United Kingdom; Department of Psychology & Newnham College, University of Cambridge, Cambridge CB3 9DF, United Kingdom
| | - Prachi A Patkee
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, St. Thomas's Hospital, London, SE1 7EH, United Kingdom
| | - Mary A Rutherford
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, St. Thomas's Hospital, London, SE1 7EH, United Kingdom
| | - Kin Y Mok
- Department of Neurodegenerative Disease, Institute of Neurology, University College London, United Kingdom
| | - John Hardy
- Department of Neurodegenerative Disease, Institute of Neurology, University College London, United Kingdom
| | - Annette Karmiloff-Smith
- Centre for Brain and Cognitive Development, Birkbeck, University of London, London WC1E 7HX, United Kingdom
| |
Collapse
|
31
|
Robles-Bello MA, Sánchez-Teruel D, Galeote Moreno MÁ. Psychometric properties of the Emotional Quotient Inventory: Youth Version-EQ-i:YV in Spanish adolescents with Down syndrome. JOURNAL OF APPLIED RESEARCH IN INTELLECTUAL DISABILITIES 2020; 34:77-89. [PMID: 33220021 DOI: 10.1111/jar.12787] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Revised: 03/30/2020] [Accepted: 07/03/2020] [Indexed: 12/30/2022]
Abstract
BACKGROUND The people with Down syndrome who are now adolescents can face a self-report questionnaire with guarantees of being answered with validity to evaluate areas of development that traditionally have not been able to be evaluated. This is the case of emotional intelligence, measured in this research with the Emotional Quotient Inventory: Youth Version-EQ-i:YV. AIMS To validate and analyse the scale's psychometric properties in adolescents with Down syndrome. METHODS A two-stage cross-sectional investigation was conducted. The inventory consists of 60 items that measure 5 dimensions. The test was administered to 644 adolescents with Down syndrome. We carried out exploratory and confirmatory factor analyses. OUTCOMES The 5-factor structure of the test was confirmed. The internal consistency of four dimensions and the EQ-i:YV's total calculated score yielded high values. CONCLUSIONS This new version of the EQ-i:YV represents a valid and reliable tool to assess emotional intelligence in Spanish adolescents with Down syndrome.
Collapse
|
32
|
Sánchez-Teruel D, Robles-Bello MA, Camacho-Conde JA. Assessment of emotional intelligence in adults with down syndrome: Psychometric properties of the Emotional Quotient Inventory. PLoS One 2020; 15:e0236087. [PMID: 32697810 PMCID: PMC7375611 DOI: 10.1371/journal.pone.0236087] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 06/30/2020] [Indexed: 01/11/2023] Open
Abstract
Introduction The Emotional Quotient Inventory: Youth version-EQ-i:YV was developed by Bar-On & Parker in 2000 and later translated and adapted for the general Spanish adolescent population by Ferrandiz et al. in 2012. The Spanish scale presents similar psychometric properties to the original version (54 items and five subdimensions). The Emotional Quotient Inventory assesses a set of personal, emotional, and social skills that influence adaptation to and coping with environmental demands and pressures. These factors can influence an adolescent’s success later in life, health, and psychological well-being. Traditionally, research in Down syndrome (DS) has focused on identifying cognitive deficits, relatively little is known about emotional intelligence (EI) and there are no scales that measure EI in people with DS adults. Objectives To validate and analyze the psychometric properties of the scale in the clinical population, specifically in Spanish adults with DS (EQ-i: SVDS). Methods A cross-sectional investigation was carried out in several stages. Descriptive, exploratory factorial (n = 345), confirmatory (n = 397), and scale reliability analyses were performed with better goodness-of-adjustment indices. Results A new scale named Emotional Quotient Inventory: Short Version for DS adults was obtained with a structure of four factors called mood, stress management, interpersonal, and intrapersonal. This new scale was reduced to 25 items. Goodness-of-fit indices were excellent (RMSEA [95% CI] = 02[.01; .03]; CFI = .99; TLI = .98; GFI = .87; AGFI = .89). The internal consistency of the four dimensions and the calculated total score (α = .91, ω = .93 and divided halves = .90) yielded high values in this clinical sample. Discussion The results recommend the use of the revised EQ-i: YV, the EQ-i: SVDS, to assess EI in adults with DS. The psychometric properties of this study are satisfactory but have four factors. The findings are discussed in terms of future research and practical implication to gain a more thorough understanding of how this population behaves on both a general and preventive level in order to teach EI properly. Conclusions This new version is a valid and reliable tool to evaluate emotional intelligence in people with intellectual disabilities and specifically in Spanish adults with DS.
Collapse
|
33
|
Prefrontal-hippocampal functional connectivity encodes recognition memory and is impaired in intellectual disability. Proc Natl Acad Sci U S A 2020; 117:11788-11798. [PMID: 32393630 DOI: 10.1073/pnas.1921314117] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Down syndrome (DS) is the most common form of intellectual disability. The cognitive alterations in DS are thought to depend on brain regions critical for learning and memory such as the prefrontal cortex (PFC) and the hippocampus (HPC). Neuroimaging studies suggest that increased brain connectivity correlates with lower intelligence quotients (IQ) in individuals with DS; however, its contribution to cognitive impairment is unresolved. We recorded neural activity in the PFC and HPC of the trisomic Ts65Dn mouse model of DS during quiet wakefulness, natural sleep, and the performance of a memory test. During rest, trisomic mice showed increased theta oscillations and cross-frequency coupling in the PFC and HPC while prefrontal-hippocampal synchronization was strengthened, suggesting hypersynchronous local and cross-regional processing. During sleep, slow waves were reduced, and gamma oscillations amplified in Ts65Dn mice, likely reflecting prolonged light sleep. Moreover, hippocampal sharp-wave ripples were disrupted, which may have further contributed to deficient memory consolidation. Memory performance in euploid mice correlated strongly with functional connectivity measures that indicated a hippocampal control over memory acquisition and retrieval at theta and gamma frequencies, respectively. By contrast, trisomic mice exhibited poor memory abilities and disordered prefrontal-hippocampal functional connectivity. Memory performance and key neurophysiological alterations were rescued after 1 month of chronic administration of a green tea extract containing epigallocatequin-3-gallate (EGCG), which improves executive function in young adults with DS and Ts65Dn mice. Our findings suggest that abnormal prefrontal-hippocampal circuit dynamics are candidate neural mechanisms for memory impairment in DS.
Collapse
|
34
|
Capone GT. Current Research Approaches to Down Syndrome: Translational Research Perspectives. AMERICAN JOURNAL ON INTELLECTUAL AND DEVELOPMENTAL DISABILITIES 2020; 125:93-96. [PMID: 32058816 DOI: 10.1352/1944-7558-125.2.93] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Translational research means different things to different people. In the biomedical research community, translational research is the process of applying knowledge from basic biology and clinical trials to techniques and tools that address critical medical needs such as new therapies. Translational research then is a "bench to bedside" bridge specifically designed to improve health outcomes ( Wetmore & Garner, 2010 ). In this sense, animal models or cell culture systems may be used to learn about basic underlying genetic and physiologic systems that are exceedingly difficult to study in human subjects ( Reeves et al., 2019 ). This has been a major theme in Down syndrome (DS) research since the mid-1980s when mouse models that approximate the condition of trisomy 21 (Ts21) first became available ( Das & Reeves 2011 ). Translational research has recently taken on a more expansive meaning, as the process of turning observations from the laboratory, the clinic, and the community can all lead to new therapeutic approaches to improve population health outcomes ( Rubio et al., 2010 ). This model has received increased attention in the last decade as it is clear that improving developmental outcomes for people with DS requires a community effort on the part of all stakeholders ( Capone, 2010 ).
Collapse
Affiliation(s)
- George T Capone
- George T. Capone, Kennedy Krieger Institute, Johns Hopkins University
| |
Collapse
|
35
|
Xu SY, Lu FM, Wang MY, Hu ZS, Zhang J, Chen ZY, Armada-da-Silva PAS, Yuan Z. Altered Functional Connectivity in the Motor and Prefrontal Cortex for Children With Down's Syndrome: An fNIRS Study. Front Hum Neurosci 2020; 14:6. [PMID: 32116599 PMCID: PMC7034312 DOI: 10.3389/fnhum.2020.00006] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Accepted: 01/09/2020] [Indexed: 11/14/2022] Open
Abstract
Children with Down's syndrome (DS) might exhibit disrupted brain functional connectivity in the motor and prefrontal cortex. To inspect the alterations in brain activation and functional connectivity for children with DS, the functional near-infrared spectroscopy (fNIRS) method was applied to examine the brain activation difference in the motor and prefrontal cortex between the DS and typically developing (TD) groups during a fine motor task. In addition, small-world analysis based on graph theory was also carried out to characterize the topological organization of functional brain networks. Interestingly, behavior data demonstrated that the DS group showed significantly long reaction time and low accuracy as compared to the TD group (p < 0.05). More importantly, significantly reduced brain activations in the frontopolar area, the pre-motor, and the supplementary motor cortex (p < 0.05) were identified in the DS group compared with the TD group. Meanwhile, significantly high global efficiency (E g ) and short average path length (L p ) were also detected for the DS group. This pilot study illustrated that the disrupted connectivity of frontopolar area, pre-motor, and supplementary motor cortex might be one of the core mechanisms associated with motor and cognitive impairments for children with DS. Therefore, the combination of the fNIRS technique with functional network analysis may pave a new avenue for improving our understanding of the neural mechanisms of DS.
Collapse
Affiliation(s)
- Shi-Yang Xu
- Faculty of Health Sciences, University of Macau, Macau, China
- Centre for Cognitive and Brain Sciences, University of Macau, Macau, China
| | - Feng-Mei Lu
- Faculty of Health Sciences, University of Macau, Macau, China
- MOE Key Laboratory for Neuroinformation, The Clinical Hospital of Chengdu Brain Science Institute, University of Electronic Science and Technology of China, Chengdu, China
| | - Meng-Yun Wang
- Faculty of Health Sciences, University of Macau, Macau, China
| | - Zhi-Shan Hu
- Faculty of Health Sciences, University of Macau, Macau, China
| | - Juan Zhang
- Faculty of Education, University of Macau, Macau, China
| | - Zhi-Yi Chen
- Department of Ultrasound Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Paulo A. S. Armada-da-Silva
- Faculty of Human Kinetics, University of Lisbon, Cruz Quebrada, Portugal
- Neuromechanics of Human Movement, Faculty of Human Kinetics, CIPER, University of Lisbon, Lisbon, Portugal
| | - Zhen Yuan
- Faculty of Health Sciences, University of Macau, Macau, China
- Centre for Cognitive and Brain Sciences, University of Macau, Macau, China
| |
Collapse
|
36
|
Martínez Cué C, Dierssen M. Plasticity as a therapeutic target for improving cognition and behavior in Down syndrome. PROGRESS IN BRAIN RESEARCH 2020; 251:269-302. [DOI: 10.1016/bs.pbr.2019.11.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
37
|
Chen CCJJ, Ringenbach SDR. The effect of acute exercise on the performance of verbal fluency in adolescents and young adults with Down syndrome: a pilot study. JOURNAL OF INTELLECTUAL DISABILITY RESEARCH : JIDR 2019; 63:614-623. [PMID: 30811082 DOI: 10.1111/jir.12603] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 11/22/2018] [Accepted: 01/14/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND The high prevalence of cognitive dysfunction is well documented in individuals with Down syndrome. However, only a few studies have focused on the effect of exercise on cognitive performance in this population. In particular, verbal fluency has been shown to be relevant to the early onset of Alzheimer's disease in individuals with Down syndrome. Thus, this study was aimed at investigating the relationship between acute exercise and verbal fluency in this population. METHODS It was a pre-post design. Twenty-eight participants (aged 14-31) were assigned to high-intensity exercise (i.e. 70-85% of predicted maximum heart rate) (N = 8), moderate-intensity exercise (i.e. 50-69% of predicted maximum heart rate) (N = 10) or attentional control (N = 10) groups. Two exercise groups walked on a treadmill using an incremental walking protocol, and the attentional control group watched a video for 20 min. Measures of verbal fluency (i.e. semantic fluency and phonetic fluency) were tested pre-intervention and post-intervention. RESULTS The result showed a quadric trend between semantic fluency and intensity of exercise. The improvement in cognitive performance on semantic fluency test was observed in the moderate-intensity exercise. However, neither a linear trend nor a quadric trend was seen in phonetic fluency. CONCLUSIONS The result showed an inverted-U relationship between exercise intensity and semantic fluency. A larger sample size, testing time and more reliable psychophysiological measures (e.g. VO2 max and neuroimaging technology), should be considered to explore the underlying mechanisms in this population.
Collapse
Affiliation(s)
- C-C J J Chen
- Department of Kinesiology, Mississippi State University, Mississippi State, MS, USA
| | - S D R Ringenbach
- School of Health Solutions, Arizona State University, Phoenix, AZ, USA
| |
Collapse
|
38
|
Kabasakalian A, Ferretti CJ, Hollander E. Oxytocin and Prader-Willi Syndrome. Curr Top Behav Neurosci 2018; 35:529-557. [PMID: 28956320 DOI: 10.1007/7854_2017_28] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In the chapter, we explore the relationship between the peptide hormone, oxytocin (OT), and behavioral and metabolic disturbances observed in the genetic disorder Prader-Willi Syndrome (PWS). Phenotypic and genotypic characteristics of PWS are described, as are the potential implications of an abnormal OT system with respect to neural development including the possible effects of OT dysfunction on interactions with other regulatory mediators, including neurotransmitters, neuromodulators, and hormones. The major behavioral characteristics are explored in the context of OT dysfunction, including hyperphagia, impulsivity, anxiety and emotion dysregulation, sensory processing and interoception, repetitive and restrictive behaviors, and dysfunctional social cognition. Behavioral overlaps with autistic spectrum disorders are discussed. The implications of OT dysfunction on the mechanisms of reward and satiety and their possible role in informing behavioral characteristics are also discussed. Treatment implications and future directions for investigation are considered.
Collapse
Affiliation(s)
- Anahid Kabasakalian
- Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, NY, USA
| | - Casara J Ferretti
- Ferkauf Graduate School of Psychology, Yeshiva University, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Eric Hollander
- Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, NY, USA.
| |
Collapse
|
39
|
Nguyen TL, Duchon A, Manousopoulou A, Loaëc N, Villiers B, Pani G, Karatas M, Mechling AE, Harsan LA, Limanton E, Bazureau JP, Carreaux F, Garbis SD, Meijer L, Herault Y. Correction of cognitive deficits in mouse models of Down syndrome by a pharmacological inhibitor of DYRK1A. Dis Model Mech 2018; 11:dmm035634. [PMID: 30115750 PMCID: PMC6176987 DOI: 10.1242/dmm.035634] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 08/01/2018] [Indexed: 12/13/2022] Open
Abstract
Growing evidence supports the implication of DYRK1A in the development of cognitive deficits seen in Down syndrome (DS) and Alzheimer's disease (AD). We here demonstrate that pharmacological inhibition of brain DYRK1A is able to correct recognition memory deficits in three DS mouse models with increasing genetic complexity [Tg(Dyrk1a), Ts65Dn, Dp1Yey], all expressing an extra copy of Dyrk1a Overexpressed DYRK1A accumulates in the cytoplasm and at the synapse. Treatment of the three DS models with the pharmacological DYRK1A inhibitor leucettine L41 leads to normalization of DYRK1A activity and corrects the novel object cognitive impairment observed in these models. Brain functional magnetic resonance imaging reveals that this cognitive improvement is paralleled by functional connectivity remodelling of core brain areas involved in learning/memory processes. The impact of Dyrk1a trisomy and L41 treatment on brain phosphoproteins was investigated by a quantitative phosphoproteomics method, revealing the implication of synaptic (synapsin 1) and cytoskeletal components involved in synaptic response and axonal organization. These results encourage the development of DYRK1A inhibitors as drug candidates to treat cognitive deficits associated with DS and AD.
Collapse
Affiliation(s)
- Thu Lan Nguyen
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Department of Translational Medicine and Neurogenetics, 67400 Illkirch, France
- Centre National de la Recherche Scientifique, UMR7104, 67400 Illkirch, France
- Institut National de la Santé et de la Recherche Médicale, U964, 67400 Illkirch, France
- Université de Strasbourg, 67400 Illkirch, France
- ManRos Therapeutics, Perharidy Research Center, 29680 Roscoff, Bretagne, France
| | - Arnaud Duchon
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Department of Translational Medicine and Neurogenetics, 67400 Illkirch, France
- Centre National de la Recherche Scientifique, UMR7104, 67400 Illkirch, France
- Institut National de la Santé et de la Recherche Médicale, U964, 67400 Illkirch, France
- Université de Strasbourg, 67400 Illkirch, France
| | - Antigoni Manousopoulou
- Faculty of Medicine/Cancer Sciences & Clinical and Experimental Medicine, University of Southampton, Center for Proteomic Research, Life Sciences Building 85, Highfield, Southampton SO17 1BJ, UK
| | - Nadège Loaëc
- ManRos Therapeutics, Perharidy Research Center, 29680 Roscoff, Bretagne, France
| | - Benoît Villiers
- ManRos Therapeutics, Perharidy Research Center, 29680 Roscoff, Bretagne, France
| | - Guillaume Pani
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Department of Translational Medicine and Neurogenetics, 67400 Illkirch, France
- Centre National de la Recherche Scientifique, UMR7104, 67400 Illkirch, France
- Institut National de la Santé et de la Recherche Médicale, U964, 67400 Illkirch, France
- Université de Strasbourg, 67400 Illkirch, France
| | - Meltem Karatas
- Laboratory of Engineering, Informatics and Imaging (ICube), Integrative multimodal imaging in healthcare (IMIS), UMR 7357, and University Hospital Strasbourg, Department of Biophysics and Nuclear Medicine, University of Strasbourg, 67400 Illkirch, France
- Department of Radiology, Medical Physics, Medical Center - University of Freiburg, Breisacher Strasse 60a, 79106 Freiburg, Germany
| | - Anna E Mechling
- Department of Radiology, Medical Physics, Medical Center - University of Freiburg, Breisacher Strasse 60a, 79106 Freiburg, Germany
| | - Laura-Adela Harsan
- Laboratory of Engineering, Informatics and Imaging (ICube), Integrative multimodal imaging in healthcare (IMIS), UMR 7357, and University Hospital Strasbourg, Department of Biophysics and Nuclear Medicine, University of Strasbourg, 67400 Illkirch, France
- Department of Radiology, Medical Physics, Medical Center - University of Freiburg, Breisacher Strasse 60a, 79106 Freiburg, Germany
| | - Emmanuelle Limanton
- Université de Rennes 1, ISCR (Institut des sciences chimiques de Rennes)-UMR, 6226, 35000 Rennes, France
| | - Jean-Pierre Bazureau
- Université de Rennes 1, ISCR (Institut des sciences chimiques de Rennes)-UMR, 6226, 35000 Rennes, France
| | - François Carreaux
- Université de Rennes 1, ISCR (Institut des sciences chimiques de Rennes)-UMR, 6226, 35000 Rennes, France
| | - Spiros D Garbis
- Faculty of Medicine/Cancer Sciences & Clinical and Experimental Medicine, University of Southampton, Center for Proteomic Research, Life Sciences Building 85, Highfield, Southampton SO17 1BJ, UK
| | - Laurent Meijer
- ManRos Therapeutics, Perharidy Research Center, 29680 Roscoff, Bretagne, France
| | - Yann Herault
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Department of Translational Medicine and Neurogenetics, 67400 Illkirch, France
- Centre National de la Recherche Scientifique, UMR7104, 67400 Illkirch, France
- Institut National de la Santé et de la Recherche Médicale, U964, 67400 Illkirch, France
- Université de Strasbourg, 67400 Illkirch, France
| |
Collapse
|
40
|
Barisnikov K, Lejeune F. Social knowledge and social reasoning abilities in a neurotypical population and in children with Down syndrome. PLoS One 2018; 13:e0200932. [PMID: 30028865 PMCID: PMC6054403 DOI: 10.1371/journal.pone.0200932] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 07/04/2018] [Indexed: 01/06/2023] Open
Abstract
Social knowledge refers to the ability to analyze and reason about social situations in relation to social rules which are essential to the development of social skills and social behavior. The present research aimed to assess these abilities with the "Social resolution task" in a neurotypical population of 351 children (4 to 12 years) and 39 young adults, and in 20 participants (10 to 18 years) with Down syndrome. Results showed that young children aged 4 to 6 were well able to distinguish between appropriate and inappropriate social behavior but they had significantly more difficulties in judging and identifying social cues for the transgression of conventional rules than for moral ones. Between age 4 and 8, their social reasoning was mainly based on factual answers, while older children showed significantly more social awareness, making more reference to emotional and social consequences for the "victims". The representation of a more universal applicability of social rules seemed to develop later in childhood, as of age 8. In contrast, participants with Down syndrome exhibited significantly more difficulties in judging, identifying and reasoning about transgression of social rules without social awareness. In conclusion, the results have shown that social reasoning abilities develop throughout childhood. Social awareness seems to have a long developmental course, which includes a sensibility about welfare and intersubjectivity, critical for the development of prosocial behavior. The clinical population with difficulties in social interaction and socio-emotional behavior could benefit from an early assessment and from learning social reasoning abilities to improve social skills.
Collapse
Affiliation(s)
- Koviljka Barisnikov
- Child Clinical Neuropsychology Unit, FPSE, University of Geneva, Geneva, Switzerland
- * E-mail:
| | - Fleur Lejeune
- Child Clinical Neuropsychology Unit, FPSE, University of Geneva, Geneva, Switzerland
| |
Collapse
|
41
|
Pharmacotherapy in Down's syndrome: which way forward? Lancet Neurol 2018; 15:776-777. [PMID: 27302343 DOI: 10.1016/s1474-4422(16)30056-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 04/15/2016] [Indexed: 12/14/2022]
|
42
|
Macià D, Pujol J, Blanco-Hinojo L, Martínez-Vilavella G, Martín-Santos R, Deus J. Characterization of the Spatial Structure of Local Functional Connectivity Using Multidistance Average Correlation Measures. Brain Connect 2018; 8:276-287. [DOI: 10.1089/brain.2017.0575] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Affiliation(s)
- Dídac Macià
- MRI Research Unit, Department of Radiology, Hospital del Mar, Barcelona, Spain
| | - Jesus Pujol
- MRI Research Unit, Department of Radiology, Hospital del Mar, Barcelona, Spain
- Centro Investigación Biomédica en Red de Salud Mental, CIBERSAM G21, Barcelona, Spain
| | - Laura Blanco-Hinojo
- MRI Research Unit, Department of Radiology, Hospital del Mar, Barcelona, Spain
- Centro Investigación Biomédica en Red de Salud Mental, CIBERSAM G21, Barcelona, Spain
| | | | - Rocío Martín-Santos
- Department of Psychiatry and Psychology, Hospital Clínic, Institut d'Investigació Biomédica August Pi I Sunyer, CIBERSAM G25, Barcelona, Spain
| | - Joan Deus
- MRI Research Unit, Department of Radiology, Hospital del Mar, Barcelona, Spain
- Department of Clinical and Health Psychology, Autonomous University of Barcelona, Barcelona, Spain
| |
Collapse
|
43
|
de Knegt NC, Lobbezoo F, Schuengel C, Evenhuis HM, Scherder EJA. Self-Reported Presence and Experience of Pain in Adults with Down Syndrome. PAIN MEDICINE 2018; 18:1247-1263. [PMID: 27694149 DOI: 10.1093/pm/pnw226] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Objective The aim was to examine whether the presence of pain (based on physical conditions and participants' report) and self-reported pain experience in adults with Down syndrome (DS) differ from general population controls. Design Cross-sectional study of 224 adults with DS (mean age = 38.1 years, mild-severe intellectual disabilities) and 142 age-matched controls (median age = 40.5 years, mean estimated IQ = 105.7) in the Netherlands. Methods File-based medical information was evaluated. Self-reported presence and experience of pain were assessed in rest and after movement during a test session (affect with facial affective scale (FAS: 0.04-0.97), intensity assessed with numeric rating scale (NRS: 0-10). Results Compared with controls, more DS participants had physical conditions that may cause pain and/or discomfort ( p = .004, 50% vs 35%), but fewer DS participants reported pain during the test session ( p = .003, 58% vs 73%). Of the participants who indicated pain and comprehended self-reporting scales ( n = 198 FAS, n = 161 NRS), the DS group reported a higher pain affect and intensity than the controls ( p < .001, FAS: 0.75-0.85 vs 0.50-0.59, NRS: 6.00-7.94 vs 2.00-3.73). Conclusions Not all adults with DS and painful/discomforting physical conditions reported pain. Those who did indicated a higher pain experience than adults from the general population. Research into spontaneous self-report of pain, repeated pain assessment, and acute pain is needed in people with DS for more insight into pain experience and mismatches between self-report and medical information.
Collapse
Affiliation(s)
- Nanda C de Knegt
- Department of Clinical Neuropsychology, VU University, Amsterdam, the Netherlands
| | - Frank Lobbezoo
- Department of Oral Kinesiology, Academic Center for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, MOVE Research Institute Amsterdam, Amsterdam, the Netherlands
| | - Carlo Schuengel
- Department of Clinical Child and Family Studies and EMGO+ Institute for Health and Care Research
| | - Heleen M Evenhuis
- Department of General Practice, Erasmus MC, University Medical Center, Rotterdam, the Netherlands
| | - Erik J A Scherder
- Department of Clinical Neuropsychology, VU University, Amsterdam, the Netherlands
| |
Collapse
|
44
|
Fenoll R, Pujol J, Esteba-Castillo S, de Sola S, Ribas-Vidal N, García-Alba J, Sánchez-Benavides G, Martínez-Vilavella G, Deus J, Dierssen M, Novell-Alsina R, de la Torre R. Anomalous White Matter Structure and the Effect of Age in Down Syndrome Patients. J Alzheimers Dis 2018; 57:61-70. [PMID: 28222523 DOI: 10.3233/jad-161112] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
BACKGROUND Neural tissue alterations in Down syndrome are fully expressed at relatively late developmental stages. In addition, there is an early presence of neurodegenerative changes in the late life stages. OBJECTIVE The aims of this study were both to characterize white matter abnormalities in the brain of adult Down syndrome patients using diffusion tensor imaging (DTI) and to investigate whether degenerative alterations in white matter structure are detectable before dementia is clinically evident. METHODS Forty-five adult non-demented Down syndrome patients showing a wide age range (18-52 years) and a matched 45-subject control group were assessed. DTI fractional anisotropy (FA) brain maps were generated and selected cognitive tests were administered. RESULTS Compared with healthy controls, non-demented Down syndrome patients showed lower DTI FA in white matter involving the major pathways, but with more severe alterations in the frontal-subcortical circuits. White matter FA decreased with age at a similar rate in both DS and control groups. CONCLUSIONS Our results contribute to characterizing the expression of white matter structural alterations in adult Down syndrome. However, an accelerated aging effect was not demonstrated, which may suggest that the FA measurements used are not sufficiently sensitive or, alternatively, age-related white matter neurodegeneration is not obvious prior to overt clinical dementia.
Collapse
Affiliation(s)
- Raquel Fenoll
- MRI Research Unit, Department of Radiology, Hospital del Mar, Barcelona, Spain
| | - Jesus Pujol
- MRI Research Unit, Department of Radiology, Hospital del Mar, Barcelona, Spain.,Centro Investigación Biomédica en Red de Salud Mental, CIBERSAM G21, Barcelona, Spain
| | - Susanna Esteba-Castillo
- Specialized Department in Mental Health and Intellectual Disability, Institut d'Assistència Sanitària (IAS), Girona, Catalonia, Spain
| | - Susana de Sola
- Integrative Pharmacology and Neuroscience Systems Research Group, Hospital del Mar Medical Research Institute, Barcelona, Spain.,Cellular & Systems Neurobiology, Centre for Genomic Regulation (CRG), Barcelona, Spain
| | - Núria Ribas-Vidal
- Specialized Department in Mental Health and Intellectual Disability, Institut d'Assistència Sanitària (IAS), Girona, Catalonia, Spain
| | - Javier García-Alba
- Specialized Department in Mental Health and Intellectual Disability, Institut d'Assistència Sanitària (IAS), Girona, Catalonia, Spain
| | - Gonzalo Sánchez-Benavides
- Integrative Pharmacology and Neuroscience Systems Research Group, Hospital del Mar Medical Research Institute, Barcelona, Spain
| | - Gerard Martínez-Vilavella
- Integrative Pharmacology and Neuroscience Systems Research Group, Hospital del Mar Medical Research Institute, Barcelona, Spain
| | - Joan Deus
- MRI Research Unit, Department of Radiology, Hospital del Mar, Barcelona, Spain.,Department of Clinical and Health Psychology, Autonomous University of Barcelona, Spain
| | - Mara Dierssen
- Cellular & Systems Neurobiology, Centre for Genomic Regulation (CRG), Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
| | - Ramón Novell-Alsina
- Cellular & Systems Neurobiology, Centre for Genomic Regulation (CRG), Barcelona, Spain
| | - Rafael de la Torre
- Integrative Pharmacology and Neuroscience Systems Research Group, Hospital del Mar Medical Research Institute, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Madrid, Spain.,Department de Ciències Experimentals i de la Salut Universitat Pompeu Fabra (CEXS-UPF), Barcelona, Spain
| |
Collapse
|
45
|
A longitudinal study of brain anatomy changes preceding dementia in Down syndrome. NEUROIMAGE-CLINICAL 2018; 18:160-166. [PMID: 29868444 PMCID: PMC5984600 DOI: 10.1016/j.nicl.2018.01.024] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 12/18/2017] [Accepted: 01/18/2018] [Indexed: 12/21/2022]
Abstract
Background We longitudinally assessed Down syndrome individuals at the age of risk of developing dementia to measure changes in brain anatomy and their relationship to cognitive impairment progression. Methods Forty-two Down syndrome individuals were initially included, of whom 27 (mean age 46.8 years) were evaluable on the basis of completing the 2-year follow-up and success in obtaining good quality MRI exams. Voxel-based morphometry was used to estimate regional brain volumes at baseline and follow-up on 3D anatomical images. Longitudinal volume changes for the group and their relationship with change in general cognitive status and specific cognitive domains were mapped. Results As a group, significant volume reduction was identified in the substantia innominata region of the basal forebrain, hippocampus, lateral temporal cortex and left arcuate fasciculus. Volume reduction in the substantia innominata and hippocampus was more prominent in individuals whose clinical status changed from cognitively stable to mild cognitive impairment or dementia during the follow-up. Relevantly, longitudinal memory score change was specifically associated with volume change in the hippocampus, prospective memory with prefrontal lobe and verbal comprehension with language-related brain areas. Conclusions Results are notably concordant with the well-established anatomical changes signaling the progression to dementia in Alzheimer's disease, despite the dense baseline pathology that developmentally accumulates in Down syndrome. This commonality supports the potential value of Down syndrome as a genetic model of Alzheimer's neurodegeneration and may serve to further support the view that Down syndrome patients are best candidates to benefit from treatment research in Alzheimer's disease.
Collapse
|
46
|
Hart SJ, Visootsak J, Tamburri P, Phuong P, Baumer N, Hernandez MC, Skotko BG, Ochoa-Lubinoff C, Liogier D'Ardhuy X, Kishnani PS, Spiridigliozzi GA. Pharmacological interventions to improve cognition and adaptive functioning in Down syndrome: Strides to date. Am J Med Genet A 2017; 173:3029-3041. [PMID: 28884975 DOI: 10.1002/ajmg.a.38465] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 06/02/2017] [Accepted: 08/10/2017] [Indexed: 12/21/2022]
Abstract
Although an increasing number of clinical trials have been developed for cognition in Down syndrome, there has been limited success to date in identifying effective interventions. This review describes the progression from pre-clinical studies with mouse models to human clinical trials research using pharmacological interventions to improve cognition and adaptive functioning in Down syndrome. We also provide considerations for investigators when conducting human clinical trials and describe strategies for the pharmaceutical industry to advance the field in drug discovery for Down syndrome. Future research focusing on earlier pharmaceutical interventions, development of appropriate outcome measures, and greater collaboration between industry, academia, advocacy, and regulatory groups will be important for addressing limitations from prior studies and developing potential effective interventions for cognition in Down syndrome.
Collapse
Affiliation(s)
- Sarah J Hart
- Department of Pediatrics, Duke University Medical Center, Durham, North Carolina
| | - Jeannie Visootsak
- F. Hoffmann-La Roche, Roche Pharma Research and Early Development, Neuroscience, Roche Innovation Center New York, New York, New York
| | - Paul Tamburri
- F. Hoffmann-La Roche, Roche Pharma Research and Early Development, Neuroscience, Roche Innovation Center New York, New York, New York
| | - Patrick Phuong
- F. Hoffmann-La Roche, Roche Pharma Research and Early Development, Neuroscience, Roche Innovation Center New York, New York, New York
| | - Nicole Baumer
- Department of Neurology, Boston Children's Hospital, Boston, Massachusetts.,Down Syndrome Program, Developmental Medicine Center, Boston Children's Hospital, Boston, Massachusetts.,Harvard Medical School, Boston, Massachusetts
| | - Maria-Clemencia Hernandez
- F. Hoffmann-La Roche, Roche Pharma Research and Early Development, Neuroscience, Roche Innovation Center Basel, Basel, Switzerland
| | - Brian G Skotko
- Harvard Medical School, Boston, Massachusetts.,Down Syndrome Program, Division of Medical Genetics, Department of Pediatrics, Massachusetts General Hospital, Boston, Massachusetts
| | - Cesar Ochoa-Lubinoff
- Section of Developmental-Behavioral Pediatrics, Department of Pediatrics, Rush University Medical Center, Chicago, Illinois
| | - Xavier Liogier D'Ardhuy
- F. Hoffmann-La Roche, Roche Pharma Research and Early Development, Neuroscience, Roche Innovation Center Basel, Basel, Switzerland
| | - Priya S Kishnani
- Department of Pediatrics, Duke University Medical Center, Durham, North Carolina
| | - Gail A Spiridigliozzi
- Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, North Carolina
| |
Collapse
|
47
|
Weak functional connectivity in the human fetal brain prior to preterm birth. Sci Rep 2017; 7:39286. [PMID: 28067865 PMCID: PMC5221666 DOI: 10.1038/srep39286] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Accepted: 11/21/2016] [Indexed: 12/21/2022] Open
Abstract
It has been suggested that neurological problems more frequent in those born preterm are expressed prior to birth, but owing to technical limitations, this has been difficult to test in humans. We applied novel fetal resting-state functional MRI to measure brain function in 32 human fetuses in utero and found that systems-level neural functional connectivity was diminished in fetuses that would subsequently be born preterm. Neural connectivity was reduced in a left-hemisphere pre-language region, and the degree to which connectivity of this left language region extended to right-hemisphere homologs was positively associated with the time elapsed between fMRI assessment and delivery. These results provide the first evidence that altered functional connectivity in the preterm brain is identifiable before birth. They suggest that neurodevelopmental disorders associated with preterm birth may result from neurological insults that begin in utero.
Collapse
|
48
|
Hamburg S, Startin CM, Strydom A. The relationship between sound-shape matching and cognitive ability in adults with Down syndrome. Multisens Res 2017; 30:537-547. [PMID: 30984556 DOI: 10.1163/22134808-00002579] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Down syndrome (DS), the most common genetic cause of intellectual disability, is characterised by a pattern of cognitive deficits hypothesised as relating to later developing neural systems. Multisensory integration (MSI) has been shown to benefit cognitive performance on numerous tasks in the typically developing population and is implicated in the early development of various cognitive processes. Given these developmental links of both MSI and DS it is important to determine the relationship between MSI and DS. This study aimed to characterise sound-shape matching performance in young adults with DS as an indicator of MSI (correct response rate around 90% in typically developing individuals). We further investigated the relationship between task performance and estimated cognitive ability (verbal and non-verbal) in addition to everyday adaptive behavior skills. Those answering correctly (72.5%) scored significantly higher across cognitive and adaptive behavior measures compared to those answering incorrectly. Furthermore, 57.1% of individuals with estimated cognitive ability scores below the median value answered correctly compared to 89.5% of individuals scoring above the median, with similar values found for adaptive behavior skills (57.9% vs 94.4%). This preliminary finding suggests sound-shape matching deficits are relatively common in DS but may be restricted to individuals of lower ability as opposed to being a general characteristic of DS. Further studies investigating aspects of MSI across a range of modalities are necessary to fully characterise the nature of MSI in DS and to explore underlying neural correlates and mechanisms.
Collapse
Affiliation(s)
- S Hamburg
- UCL Division of Psychiatry, University College London, London, United Kingdom.,LonDownS Consortium
| | - C M Startin
- UCL Division of Psychiatry, University College London, London, United Kingdom.,LonDownS Consortium
| | - A Strydom
- UCL Division of Psychiatry, University College London, London, United Kingdom.,LonDownS Consortium
| |
Collapse
|
49
|
Carmona-Iragui M, Santos T, Videla S, Fernández S, Benejam B, Videla L, Alcolea D, Blennow K, Blesa R, Lleó A, Fortea J. Feasibility of Lumbar Puncture in the Study of Cerebrospinal Fluid Biomarkers for Alzheimer’s Disease in Subjects with Down Syndrome. J Alzheimers Dis 2016; 55:1489-1496. [PMID: 27858714 DOI: 10.3233/jad-160827] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- María Carmona-Iragui
- Memory Unit, Department of Neurology, Hospital de la Santa Creu i Sant Pau, Biomedical Research Institute Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
- Barcelona Down Medical Center, Fundació Catalana Síndrome de Down, Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), Spain
| | - Telma Santos
- Neurology Department, Centro Hospitalar Vila Nova de Gaia/Espinho, Porto, Portugal
| | - Sebastián Videla
- Barcelona Down Medical Center, Fundació Catalana Síndrome de Down, Barcelona, Spain
- Department of Experimental and Health Sciences, Faculty of Health and Life Sciences, Universitat Pompeu Fabra, Barcelona, Spain
| | - Susana Fernández
- Barcelona Down Medical Center, Fundació Catalana Síndrome de Down, Barcelona, Spain
| | - Bessy Benejam
- Barcelona Down Medical Center, Fundació Catalana Síndrome de Down, Barcelona, Spain
| | - Laura Videla
- Barcelona Down Medical Center, Fundació Catalana Síndrome de Down, Barcelona, Spain
| | - Daniel Alcolea
- Memory Unit, Department of Neurology, Hospital de la Santa Creu i Sant Pau, Biomedical Research Institute Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), Spain
| | - Kaj Blennow
- Clinical Neurochemistry Laboratory, Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry, University of Göteborg, Göteborg, Sweden
| | - Rafael Blesa
- Memory Unit, Department of Neurology, Hospital de la Santa Creu i Sant Pau, Biomedical Research Institute Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), Spain
| | - Alberto Lleó
- Memory Unit, Department of Neurology, Hospital de la Santa Creu i Sant Pau, Biomedical Research Institute Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), Spain
| | - Juan Fortea
- Memory Unit, Department of Neurology, Hospital de la Santa Creu i Sant Pau, Biomedical Research Institute Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
- Barcelona Down Medical Center, Fundació Catalana Síndrome de Down, Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), Spain
| |
Collapse
|
50
|
Startin CM, Hamburg S, Hithersay R, Davies A, Rodger E, Aggarwal N, Al-Janabi T, Strydom A. The LonDownS adult cognitive assessment to study cognitive abilities and decline in Down syndrome. Wellcome Open Res 2016; 1:11. [PMID: 28018980 PMCID: PMC5176078 DOI: 10.12688/wellcomeopenres.9961.1] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Background: Down syndrome (DS), the most common genetic cause of intellectual disability, is associated with an ultra-high risk of developing Alzheimer’s disease. However, there is individual variability in the onset of clinical dementia and in baseline cognitive abilities prior to decline, particularly in memory, executive functioning, and motor coordination. The LonDownS Consortium aims to determine risk and protective factors for the development of dementia and factors relating to cognitive abilities in people with DS. Here we describe our cognitive test battery and related informant measures along with reporting data from our baseline cognitive and informant assessments. Methods: We developed a cognitive test battery to assess general abilities, memory, executive function, and motor coordination abilities in adults with DS, with informant ratings of similar domains also collected, designed to allow for data on a broad range of participants. Participants (n=305) had a range of ages and abilities, and included adults with and without a clinical diagnosis of dementia. Results: Results suggest the battery is suitable for the majority of adults with DS, although approximately half the adults with dementia were unable to undertake any cognitive task. Many test outcomes showed a range of scores with low floor and ceiling effects. Non-verbal age-adjusted IQ scores had lower floor effects than verbal IQ scores. Before the onset of any cognitive decline, females aged 16-35 showed better verbal abilities compared to males. We also identified clusters of cognitive test scores within our battery related to visuospatial memory, motor coordination, language abilities, and processing speed / sustained attention. Conclusions: Our further studies will use baseline and longitudinal assessments to explore factors influencing cognitive abilities and cognitive decline related to ageing and onset of dementia in adults with DS.
Collapse
Affiliation(s)
- Carla M Startin
- UCL Division of Psychiatry, University College London, London, UK.,The LonDownS Consortium, University College London, London, UK
| | - Sarah Hamburg
- UCL Division of Psychiatry, University College London, London, UK.,The LonDownS Consortium, University College London, London, UK
| | - Rosalyn Hithersay
- UCL Division of Psychiatry, University College London, London, UK.,The LonDownS Consortium, University College London, London, UK
| | - Amy Davies
- UCL Division of Psychiatry, University College London, London, UK.,Faculty of Health and Medical Sciences, University of Surrey, Guilford, UK
| | - Erin Rodger
- UCL Division of Psychiatry, University College London, London, UK
| | - Nidhi Aggarwal
- UCL Division of Psychiatry, University College London, London, UK
| | - Tamara Al-Janabi
- UCL Division of Psychiatry, University College London, London, UK.,The LonDownS Consortium, University College London, London, UK
| | - André Strydom
- UCL Division of Psychiatry, University College London, London, UK.,The LonDownS Consortium, University College London, London, UK
| |
Collapse
|