Down Syndrome From Understanding The Neurobiology To Therapy

Down syndrome (DS) is the most common example of neurogenetic aneuploid disorder leading to mental retardation. In most cases, DS results from an extra copy of chromosome 21 (HSA21) producing deregulated gene expression in brain that gives raise to subnormal intellectual functioning. The topic of this volume is of broad interest for the neuroscience community, because it tackles the concept of neurogenomics, that is, how the genome as a whole contributes to a neurodevelopmental cognitive disorders, such as DS, and thus to the development, structure and function of the nervous system. This volume of Progress in Brain Research discusses comparative genomics, gene expression atlases of the brain, network genetics, engineered mouse models and applications to human and mouse behavioral and cognitive phenotypes. It brings together scientists of diverse backgrounds, by facilitating the integration of research directed at different levels of biological organization, and by highlighting translational research and the application of the existing scientific knowledge to develop improved DS treatments and cures. Leading authors review the state-of-the-art in their field of investigation and provide their views and perspectives for future research Chapters are extensively referenced to provide readers with a comprehensive list of resources on the topics covered All chapters include comprehensive background information and are written in a clear form that is also accessible to the non-specialist

Genetics and Neurobiology of Down Syndrome provides a thorough review of the genetic etiology and mechanisms of trisomy 21. The author discusses the history of the syndrome, along with the clinical features and health consequences, including physical features, cognitive, and neurologic symptoms. Genetic counseling on pros and cons of prenatal screening and testing and associated ethical issues are explored. This unique book also covers the societal and demographic aspects as well as the future direction of therapeutic development. Reviews genetic etiology and mechanisms of trisomy 21 Discusses prenatal screening and genetic counseling, including ethical aspects Explores link between Down Syndrome and susceptibility to Alzheimer’s and early brain aging Covers cognitive and neurological symptoms and other health consequences Identifies future therapeutic developments

Down syndrome (DS) is the most common example of neurogenetic aneuploid disorder leading to mental retardation. In most cases, DS results from an extra copy of chromosome 21 (HSA21) producing deregulated gene expression in brain that gives raise to subnormal intellectual functioning. The topic of this volume is of broad interest for the neuroscience community, because it tackles the concept of neurogenomics, that is, how the genome as a whole contributes to a neurodevelopmental cognitive disorders, such as DS, and thus to the development, structure and function of the nervous system. This volume of Progress in Brain Research discusses comparative genomics, gene expression atlases of the brain, network genetics, engineered mouse models and applications to human and mouse behavioral and cognitive phenotypes. It brings together scientists of diverse backgrounds, by facilitating the integration of research directed at different levels of biological organization, and by highlighting translational research and the application of the existing scientific knowledge to develop improved DS treatments and cures. Leading authors review the state-of-the-art in their field of investigation and provide their views and perspectives for future research Chapters are extensively referenced to provide readers with a comprehensive list of resources on the topics covered All chapters include comprehensive background information and are written in a clear form that is also accessible to the non-specialist

Research on the multiple aspects of cognitive impairment in Down syndrome (DS), from genes to behavior to treatment, has made tremendous progress in the last decade. The study of congenital intellectual disabilities such as DS is challenging since they originate from the earliest stages of development and both the acquisition of cognitive skills and neurodegenerative pathologies are cumulative. Comorbidities such as cardiac malformations, sleep apnea, diabetes and dementia are frequent in the DS population, as well, and their increased risk provides a means of assessing early stages of these pathologies that is relevant to the general population. Notably, persons with DS will develop the histopathology of Alzheimer’s disease (formation of neuritic plaques and tangles) and are at high risk for dementia, something that cannot be predicted in the population at large. Identification of the gene encoding the amyloid precursor protein, its localization to chromosome 21 in the 90’s and realization that all persons with DS develop pathology identified this as an important piece of the amyloid cascade hypothesis in Alzheimer’s disease. Awareness of the potential role of people with DS in understanding progression and treatment as well as identification of genetic risk factors and also protective factors for AD is reawakening. For the first time since DS was recognized, major pharmaceutical companies have entered the search for ameliorative treatments, and phase II clinical trials to improve learning and memory are in progress. Enriched environment, brain stimulation and alternative therapies are being tested while clinical assessment is improving, thus increasing the chances of success for therapeutic interventions. Researchers and clinicians are actively pursuing the possibility of prenatal treatments for many conditions, an area with a huge potential impact for developmental disorders such as DS. Our goal here is to present an overview of recent advances with an emphasis on behavioral and cognitive deficits and how these issues change through life in DS. The relevance of comorbidities to the end phenotypes described and relevance of pharmacological targets and possible treatments will be considerations throughout.

Preclinical Research in Down Syndrome: From Bench to Bedside, Volume 251, the latest release in the Progress in Brain Research series, highlights new advances in the field. Chapters in this updated release include Exploring genetic and epigenetic mechanisms underlying cognitive deficits in Dow syndrome, The trisomy paradox: gene expression dysregulation domains, the Influence of allelic differences in mouse models of Down syndrome, Modelling Down syndrome in cells: From stem cells to organoids, Modelling Down syndrome in animals from the early stage to the new generation of models, Mapping behavioral landscapes in Down syndrome animal models, and more.

State of the Art of Research on Down Syndrome, Volume 56, the latest release in the International Review of Research in Developmental Disabilities series, highlights new advances in the field, with this new volume presenting interesting chapters on the Genetics and Genomics of Down Syndrome, Motor Development and Down Syndrome, Cognitive Profiles in Individuals with Down syndrome, Working Memory and Down syndrome, Environment Learning in Individuals with Down syndrome, Reading for Comprehension: The Contribution of Decoding, Linguistic and Cognitive Skills, Number Sense in Down syndrome, Early Starting States in Infants with Down Syndrome: Implications for Research and Practice, and more. Provides the authority and expertise of leading contributors from an international board of authors Presents the latest release in the International Review of Research in Developmental Disabilities series Updated release includes the latest information on the State of the Art of Research on Down Syndrome

Neurobiology of Epilepsy: From Genes to Networks is the latest volume in the Progress in Brain Research series that focuses on new trends and developments. This established international series examines major areas of basic and clinical research within the neurosciences, as well as popular and emerging subfields. Explores new trends and developments in the neurobiology of Epilepsy Enhances the literature of neuroscience by further expanding the established, ongoing international series Progress in Brain Research Examines major areas of basic and clinical research within the field