The Neurobiology of Aging and Alzheimer Disease in Down Syndrome provides a multidisciplinary approach to the understanding of aging and Alzheimer disease in Down syndrome that is synergistic and focused on efforts to understand the neurobiology as it pertains to interventions that will slow or prevent disease. The book provides detailed knowledge of key molecular aspects of aging and neurodegeneration in Down Syndrome by bringing together different models of the diseases and highlighting multiple techniques. Additionally, it includes case studies and coverage of neuroimaging, neuropathological and biomarker changes associated with these cohorts. This is a must-have resource for researchers who work with or study aging and Alzheimer disease either in the general population or in people with Down syndrome, for academic and general physicians who interact with sporadic dementia patients and need more information about Down syndrome, and for new investigators to the aging and Alzheimer/Down syndrome arena. - Discusses the complexities involved with aging and Alzheimer's disease in Down syndrome - Summarizes the neurobiology of aging that requires management in adults with DS and leads to healthier aging and better quality of life into old age - Serves as learning tool to orient researchers to the key challenges and offers insights to help establish critical areas of need for further research

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

This book contains updated reviews and original research work on Down Syndrome focussing on brandnew results in neurobiology, in particular results on gene hunting (subtractive hybridization, differential display) and neurochemistry. The book provides new data such as a subtractive library of Down Syndrome brain showing cDNAs that are overexpressed or downregulated and can be regarded as a source for further research on the preliminary transcriptional data given. A 2D-electrophoretic map of human brain proteins including Down Syndrome brain protein expression established by in-gel-digestion of spots with subsequent MALDI-identification provides the scientific basis for protein work to the neuroscientist. Altogether, the book provides a series of new candidate genes possibly involved in Down Syndrome neurobiology, tools for neuroscience studies on Down Syndrome brain thus serving as a manual and updated views and aspects on Down Syndrome pathobiology.

When we worked on Down Syndrome brain in the past we have been focus ing on adult brain. This was a major step forwards as most work on Down Syndrome was carried out on fibroblasts or other tissues and, moreover, we introduced proteomics to identify and quantify brain protein expression. We considered evaluation of brain protein expression in Down Syndrome brain by and by more important than gene hunting at the nucleic acid level realiz ing the long unpredictable way from RNA to protein. The availability of fetal samples along with the proteomic appproach stimulated and reinforced studies on Down Syndrome brain. And indeed, it was found out that some observations on aberrant protein expression in adult Down Syndrome brain could not be verified in the fetal samples indi cating that neurodegeneration in adult Down Syndrome brain may have been responsible rather than trisomy 21. Using brains from the early second trimester of gestation led to the generation of a series of clues for the under standing of aberrant wiring of the brain in Down Syndrome and enabled the determination of altered key functions in early life; e. g. undetectably low drebrin was observed in Down Syndrome cortex, an integral constituent and marker for dendritic spines, main effectors of cross-talk between neurons. In addition, evaluation of the nature of the neuronal deficits in terms of neuro transmission markers could be established as well as neuronal density in fetal Down Syndrome cortex.

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. - Presents content by renowned authors who review the state-of-the-art in preclinical research and provide their views and perspectives for the future of the field - Provides extensively referenced chapters, thus giving readers a comprehensive list of resources on topics covered - Includes comprehensive and in-depth background information written in a clear form that is accessible to both specialists and non-specialists

This book provides a concise yet comprehensive source of current information on Down syndrome. It focuses on exciting areas of research on chromosome editing, neurogenomics and diseases associated with Down syndrome. Research workers, scientists, medical graduates and physicians will find this book as an excellent source for consultation and references. Key features of this book are chromosome engineering in Down syndrome, mental retardation and cognitive disability, prenatal diagnosis and diseases associated with Down syndrome. Although aimed primarily for research workers on Down syndrome, we hope that the appeal of this book will extend beyond the narrow confines of academic interest and be exciting to wider audience, especially parents, relatives and health care providers who work with infants and children with Down syndrome.

For a long time, it was assumed that a genetic disposition such as trisomy 21 enables predictions to be made about overall personality development. But, who could have ever imagined that people with trisomy 21 (Down syndrome) would also be capable of earning a university degree? We studied 1,294 people with trisomy 21. The results showed that people with trisomy 21 benefit more from abstract learning than their neurotypical counterparts. Two-year-olds with the syndrome first learn to read and only then to speak and will understand algebra better than arithmetic. Ignorance of neurodiversity inevitably leads to learning difficulties when these people are forced to learn at the same pace as others. This applies to autism and trisomy 21 to the same extent. That is why this book advocates the recognition of trisomy 21 as a variant in the spectrum of human neurodiversity.