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Neuroimaging Biomarkers And Cognition In Alzheimers Disease Spectrum
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Book Synopsis Neuroimaging Biomarkers and Cognition in Alzheimer’s disease Spectrum by : Jiu Chen
Download or read book Neuroimaging Biomarkers and Cognition in Alzheimer’s disease Spectrum written by Jiu Chen and published by Frontiers Media SA. This book was released on 2024-01-11 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: Subjective cognitive decline (SCD) with self-reported concerns and mild cognitive impairment (MCI) are well-established to be at increased risk of developing Alzheimer’s disease (AD) dementia and a clinical continuum of dementia progression as a spectrum of AD. AD may develop from SCD to MCI (early MCI and late MCI) and eventually to AD. Nevertheless, until recently little was known about their pathophysiology associated with cognitive-behavioral syndrome. Although for researchers, scientists and clinicians, the pathophysiology of AD spectrum is an intriguing issue, delineating it in a clear way is far from easy. Taken together, in-depth understanding of neuroimaging-based pathology behind cognitive impairments across AD spectrum may help to develop new strategy for the early diagnosis and treatment of AD. Neuroimaging has been thought to potentially reveal the pathological mechanisms of AD progression. Individuals across AD spectrum are often associated with anatomical and functional brain alterations and cognitive impairment, most of the pathophysiology will focus primarily on the brain. To investigate brain structures and functions associated with cognition, neuroimaging will be the most appropriate tool.
Book Synopsis Neuroimaging biomarkers in Alzheimer’s disease by : Samuel Barrack
Download or read book Neuroimaging biomarkers in Alzheimer’s disease written by Samuel Barrack and published by iMedPub. This book was released on 2013-10-20 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: In view of the growing prevalence of AD worldwide, there is an urgent need for the development of better diagnostic tools and more effective therapeutic interventions. Indeed, much work in this field has been done during last decades. As such, a major goal of current clinical research in AD is to improve early detection of disease and presymptomatic detection of neuronal dysfunction, concurrently with the development of better tools to assess disease progression in this group of disorders. All these putative correlates are commonly referred to as AD-related biomarkers. The ideal biomarker should be easy to quantify and measure, reproducible, not subject to wide variation in the general population and unaffected by co- morbid factors. For evaluation of therapies, a biomarker needs to change linearly with disease progression and closely correlate with established clinico-pathological parameters of the disease. There is growing evidence that the use of biomarkers will increase our ability to better indentify the underlying biology of AD, especially in its early stages. These biomarkers will improve the detection of the patients suitable for research studies and drug trials, and they will contribute to a better management of the disease in the clinical practice. Indeed, much work in this field has been done during last decades. The vast number of important applications, combined with the untamed diversity of already identified biomarkers, show that there is a pressing need to structure the research made on AD biomarkers into a solid, comprehensive and easy to use tool to de deployed in clinical settings. To date there are few publications compiling results on this topic. That is why when I was asked to address this task I accepted inmediately. I am happy to present you a bundle of the best articles published about biomarkers for Alzheimer’s disease in recent times.
Book Synopsis The Clinical Spectrum of Alzheimer's Disease by : Suzanne De La Monte
Download or read book The Clinical Spectrum of Alzheimer's Disease written by Suzanne De La Monte and published by BoD – Books on Demand. This book was released on 2011-09-06 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Clinical Spectrum of Alzheimer's Disease: The Charge Toward Comprehensive Diagnostic and Therapeutic Strategies is highly informative and current. Acknowledged experts in the field critically review both standard and under-appreciated clinical, behavioral, epidemiological, genetic, and neuroimaging attributes of Alzheimer's disease. The collection covers diverse topics of interest to clinicians and researchers alike. Experienced professionals and newcomers to the field will benefit from the read. The strengths and weaknesses of current clinical, non-invasive, neuro-imaging, and biomarker diagnostic approaches are explained. The perspectives give fresh insights into the process of neurodegeneration. Readers will be enlightened by the evidence that the neural circuits damaged by neurodegeneration are much broader than conventionally taught, suggesting that Alzheimer's could be detected at earlier stages of disease by utilizing multi-pronged diagnostic approaches. This book inspires renewed hope that more effective treatments could be developed based upon the expanding list of potential therapeutic targets.
Book Synopsis Alzheimer's Disease by : George Perry
Download or read book Alzheimer's Disease written by George Perry and published by IOS Press. This book was released on 2013 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is a companion to the highly successful book published in association with the Journal of Alzheimer's Disease (JAD) on the centennial of Alzheimer's discovery: "Alzheimer's Disease: A Century of Scientific and Clinical Research". Instead of looking back, this collection, "Alzheimer's Disease: Advances for a New Century", will look forward. Using scientometric analysis the most promising developments since the Alzheimer Centennial in 2006 have been substantiated. While prior trends and advances in genetics, amyloid-β, tau, neuropathology, and oxidative stress continue as active areas, emergent areas impacting the transition from normal cognition to Alzheimer's disease such as diagnostic imaging, biomarkers, metabolism, and lifestyle (areas conceived only a few years ago) now dominate the debate.Invited contributors have summarized their landmark publications identified by our analysis and have put them into perspective, explaining the impetus behind the work, the contribution of the results to the field, and who played a role in the work.
Book Synopsis Biomarkers in Alzheimer's Disease by : Tapan Khan
Download or read book Biomarkers in Alzheimer's Disease written by Tapan Khan and published by Academic Press. This book was released on 2016-08-02 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biomarkers in Alzheimer’s Disease provides a comprehensive overview of all modalities of Alzheimer’s disease biomarkers, including neuroimaging, cerebrospinal fluid, genomic, and peripheral systems. Each chapter integrates molecular/cellular abnormality due to Alzheimer’s disease and technological advancement of biomarkers techniques. The book is ideal for clinical neuroscience and molecular/cellular neuroscience researchers, psychiatrists, and allied healthcare practitioners involved in the diagnosis and management of patients with cognitive impairment and Alzheimer’s disease, and for differential diagnosis of Alzheimer’s disease with other non-Alzheimer’s dementia. Presents a comprehensive overview detailing all modalities of Alzheimer’s disease biomarkers Written for neuroscience researchers and clinicians studying or treating patients with Alzheimer’s Disease Integrates, in each chapter, the molecular/cellular abnormality due to Alzheimer’s disease and the technological advancement of biomarkers techniques
Book Synopsis Imaging Genetics and Biomarker Variations of Clinically Diagnosed Alzheimer's Disease by : Edwin Carl Jr Stage
Download or read book Imaging Genetics and Biomarker Variations of Clinically Diagnosed Alzheimer's Disease written by Edwin Carl Jr Stage and published by . This book was released on 2020 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neuroimaging biomarkers play a crucial role in our understanding of Alzheimer's disease. Beyond providing a fast and accurate in vivo picture of the neuronal structure and biochemistry, these biomarkers make up a research framework, defined in a 2018 as the A(amyloid)/T(tau)/N(neurodegeneration) framework after three of the hallmarks of Alzheimer's disease. I first used imaging measures of amyloid, tau and neurodegeneration to study clinically diagnosed Alzheimer's disease. After dividing subjects into early (onset younger than 65) and late-onset (onset of 65 and older) amyloid-positive (AD) and amyloid-negative (nonAD) groups, I saw radically differing topographical distribution of tau and neurodegeneration. AD subjects with an early disease onset had a much more severe amyloid, tau and neurodegeneration than lateonset AD. In the nonAD group, neurodegeneration was found only in early-onset FDG PET data and in a nonAlzheimer's-like MRI and FDG pattern for late-onset. The late-onset nonAD resembled that of limbic-predominant age-related TDP-43 encephalopathy. I next utilized an imaging genetics approach to associate genome-wide significant Alzheimer's risk variants to structural (MRI), metabolic (FDG PET) and tau (tau PET) imaging biomarkers. Linear regression was used to select variants for each of the models and included a pooled sample, cognitively normal, mild cognitive impairment and dementia groups in order to fully capture the cognitive spectrum from normal cognition to the most severely impaired. Model selected variants were replicated using voxelwise regression in an exploratory analysis of spatial associations for each modality. For each imaging type, I replicated some associations to the biomarkers previously seen, as well as identified several novel associations. Several variants identified with crucial Alzheimer's biomarkers may be potential future targets for drug interventions.
Book Synopsis Alzheimer's Disease and Mild Cognitive Impairment by : Adam Fleisher
Download or read book Alzheimer's Disease and Mild Cognitive Impairment written by Adam Fleisher and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: With diagnosed cases of Alzheimers Disease (AD) currently around five million in the US, and the number expected to rise to 16 million within the next 50 years, US Medicare and Medicaid are facing a tripling of healthcare costs. The prevalence of AD doubles the older the population becomes, so the longer we live and longevity is increasing worldwide the more this age-related disease will impact our societies. Merely delaying the onset of AD by five years would produce a 50% decrease in prevalence and spare millions of people the suffering caused by this devastating disease. To effectively target prevention therapies at the pre-clinical stage of the disease, we must develop biomarkers which accurately predict future dementia. Magnetic Resonance Imaging (MRI) and Positron Emission Tomography (PET) offer great promise as biomarkers for identifying underlying structural, functional and disease specific pathology in AD, MCI and related disease processes.
Book Synopsis Exploring Reliable Markers and Prediction Indexes for the Progression from Subjective Cognitive Decline to Cognitive Impairment by : Ying Han
Download or read book Exploring Reliable Markers and Prediction Indexes for the Progression from Subjective Cognitive Decline to Cognitive Impairment written by Ying Han and published by Frontiers Media SA. This book was released on 2021-11-08 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biomarkers for Alzheimer's Disease Drug Development by : Robert Perneczky
Download or read book Biomarkers for Alzheimer's Disease Drug Development written by Robert Perneczky and published by Springer Nature. This book was released on 2024 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: Zusammenfassung: This fully updated volume provides an up-to-date and comprehensive overview of the current state of technologies helping to accelerate Alzheimer's disease drug development. Addressing the latest advances in preclinical and clinical research, including new insights into the molecular mechanisms and emerging therapeutic strategies, the book continues by exploring digital biomarkers and advanced neuroimaging analysis which will transform how clinical trials in the Alzheimer's disease field are performed. Written for the highly successful Methods in Molecular Biology series, chapters feature the kind of detailed implementation advice that leads to greater success in the lab or clinic. Authoritative and practical, Biomarkers for Alzheimer's Disease Drug Development, Second Edition seeks to inspire and inform future efforts to develop effective treatments for this devastating disease
Book Synopsis Atlas of Biomarkers for Alzheimer's Disease by : Manuel Menéndez González
Download or read book Atlas of Biomarkers for Alzheimer's Disease written by Manuel Menéndez González and published by Springer. This book was released on 2014-07-07 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: A lot of research on biomarkers for Alzheimer is being done in the last few decades. The aim of these studies is to find some method to ease the diagnosis of Alzheimers as early as possible. Such methods are a range of blood or CSF tests on one hand and several types of neuroimaging scans on the other. Many of the images coming both from laboratory and neuroimaging are very visual and illustrative. These images, accompanied by a short description, can perfectly explain the main results and usefulness of every biomarker. The objective of this book would be to summarize the most important studies made in this field. Few publications have systematically compiled results on this topic and only one as an atlas. Readers would be interested in this publication because it allows reviewing the current status of research by handily visualizing the results.
Book Synopsis Diseases of the Brain, Head and Neck, Spine 2020–2023 by : Juerg Hodler
Download or read book Diseases of the Brain, Head and Neck, Spine 2020–2023 written by Juerg Hodler and published by Springer Nature. This book was released on 2020-02-14 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book offers an essential overview of brain, head and neck, and spine imaging. Over the last few years, there have been considerable advances in this area, driven by both clinical and technological developments. Written by leading international experts and teachers, the chapters are disease-oriented and cover all relevant imaging modalities, with a focus on magnetic resonance imaging and computed tomography. The book also includes a synopsis of pediatric imaging. IDKD books are rewritten (not merely updated) every four years, which means they offer a comprehensive review of the state-of-the-art in imaging. The book is clearly structured and features learning objectives, abstracts, subheadings, tables and take-home points, supported by design elements to help readers navigate the text. It will particularly appeal to general radiologists, radiology residents, and interventional radiologists who want to update their diagnostic expertise, as well as clinicians from other specialties who are interested in imaging for their patient care.
Book Synopsis Biomarkers of Alzheimer's Disease: The Present and the Future by : Sylvain Lehmann
Download or read book Biomarkers of Alzheimer's Disease: The Present and the Future written by Sylvain Lehmann and published by Frontiers Media SA. This book was released on 2016-11-10 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alzheimer disease (AD) is a neurodegenerative disorder characterized by significant cognitive deficits, behavioral changes, sleep disorders and loss of functional autonomy. AD represents the main cause of dementia and has become a major public health issue. In addition, the number of patients suffering from AD is growing rapidly as the population ages worldwide. Memory impairment is usually the earliest clinical and core symptom of this disease. The diagnosis at a late clinical stage is relatively easy. However, a delay in the diagnosis is damageable for the handling of patients in terms of optimal medical and social care. The actual interest of the scientific head-ways is to optimize the diagnosis in prodromal stage of the disease and to propose personalized therapeutic solutions to individual patients. New revised AD diagnostic criteria include early alteration of cerebrospinal fluid (CSF) biomarkers: decrease of amyloïd peptides (Aβ42), and increase in tau and phosphorylated-tau (p-tau) protein concentration. This recognition of CSF biological biomarkers for the diagnosis of AD is a major step towards the “molecular” diagnosis and follow-up of the disease. Many issues are however still subject of debate. This e-book provides a comprehensive overview of the state of the art of fluid biomarkers for AD, e.g. which novel biomarkers should be implemented in clinical practice for diagnosis or for monitoring treatment or side effects, which ones are new for AD or related dementias or what is the potential of peripheral blood markers. Moreover, the e-Book provides practical guidelines how to optimally and efficiently develop and validate novel biomarker assays, and to document and control pre-analytical variation.
Book Synopsis Neuroimaging in Dementia by : Frederik Barkhof
Download or read book Neuroimaging in Dementia written by Frederik Barkhof and published by Springer Science & Business Media. This book was released on 2011-02-11 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: This up-to-date, superbly illustrated book is a practical guide to the effective use of neuroimaging in the patient with cognitive decline. It sets out the key clinical and imaging features of the various causes of dementia and directs the reader from clinical presentation to neuroimaging and on to an accurate diagnosis whenever possible. After an introductory chapter on the clinical background, the available "toolbox" of structural and functional neuroimaging techniques is reviewed in detail, including CT, MRI and advanced MR techniques, SPECT and PET, and image analysis methods. The imaging findings in normal ageing are then discussed, followed by a series of chapters that carefully present and analyze the key findings in patients with dementias. Throughout, a practical approach is adopted, geared specifically to the needs of clinicians (neurologists, radiologists, psychiatrists, geriatricians) working in the field of dementia, for whom this book will prove an invaluable resource.
Book Synopsis Measurable Brain and Cognitive Reserve: The Implication of Neuroimaging Biomarkers in the Normal Aging Process by : Chu-Chung Huang
Download or read book Measurable Brain and Cognitive Reserve: The Implication of Neuroimaging Biomarkers in the Normal Aging Process written by Chu-Chung Huang and published by Frontiers Media SA. This book was released on 2022-11-02 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Neuroanatomy and Pathology of Sporadic Alzheimer's Disease by : Heiko Braak
Download or read book Neuroanatomy and Pathology of Sporadic Alzheimer's Disease written by Heiko Braak and published by Springer. This book was released on 2014-12-11 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: As indicated by its title, this monograph deals chiefly with morphologically recognizable deviations from the normal anatomical condition of the human CNS. The AD-associated pathology is illustrated from its beginnings (sometimes even in childhood) to its final form, which is reached late in life. The AD process commences much earlier than the clinically recognizable phase of the disorder, and its timeline includes an extended preclinical phase. The further the pendulum swings away from the symptomatic final stages towards the early pathology, the more obvious the lesions become, although from a standpoint of severity they are more unremarkable and thus frequently overlooked during routine neuropathological assessment. For this reason, the authors deal with the hallmark lesions in the early phases of the AD process in considerable detail
Book Synopsis Neuroimaging-based Artificial Neural Network Predicts Conversion of Cognitive Impairment Spectrum in Alzheimer's Disease by : Xiao Gao
Download or read book Neuroimaging-based Artificial Neural Network Predicts Conversion of Cognitive Impairment Spectrum in Alzheimer's Disease written by Xiao Gao and published by . This book was released on 2018 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alzheimer's Disease (AD) represents the most frequent (60-80%) subtype of dementia and is one kind of progressive spectrum disorder without effective treatment so far. In the last decades, great efforts from all over the community have been made on the early diagnosis of AD at its preclinical stage, Mild Cognitive Impairment (MCI). Recently, a series of machine learning studies have successfully constructed several computational models in predicting conversion of cognitive impairment but seldom foresee beyond 4 years. Thanks to Alzheimer's Disease Neuroimaging Initiative (ADNI) database, in this study we extracted cognition feature from several clinical outcomes. We then took advantage of structural MRI data and one Network Diffusion Model (NDM) raised by our group for subject-specific prediction of future cognition features. One supervised classification neural network was trained with ground-truth baseline and time-of- interest data but applied with predicted future cognition features. This established machine learning framework has demonstrated descent sensitivity and specificity in prediction of MCI-to- AD conversion (0.890 +/- 0.083 and 0.923 +/- 0.045) and healthy control (HC)-to-AD conversion (0.900 +/- 0.074 and 0.744 +/- 0.154) 5 years post baseline. To the best of our knowledge, we are the very first groups working on long-term prediction of AD spectrum conversion from both HC and MCI.
Book Synopsis Integrated Fluid and Neuroimaging Biomarkers for Alzheimer’s Disease Predict Longitudinal Brain Amyloid Accumulation, White Matter Microstructural Changes, and Cognitive Decline in Late-middle-aged Risk-enriched Adults by :
Download or read book Integrated Fluid and Neuroimaging Biomarkers for Alzheimer’s Disease Predict Longitudinal Brain Amyloid Accumulation, White Matter Microstructural Changes, and Cognitive Decline in Late-middle-aged Risk-enriched Adults written by and published by . This book was released on 2016 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interventions to delay or prevent the onset of Alzheimer’s disease (AD) would dramatically reduce the number of people living with dementia in the future. To reach this goal, it will be critical to identify individuals with preclinical AD, a clinically asymptomatic disease stage that is characterized by accumulation of beta-amyloid aggregates and neurofibrillary tangles in the brain, which are thought to contribute to neuronal injury and structural brain changes. The overarching goal of this dissertation was to better understand relationships between key pathological features of AD during this important preclinical timeframe and to assess the combined power of biomarkers to predict progression along the AD trajectory prior to the onset of clinical impairment. These experiments addressed two major questions: 1) are early indicators of preclinical AD better associated with biomarkers that capture multiple pathologies simultaneously than with a biomarker for a single pathology measured in isolation?; and 2) do longitudinal analyses of pathology and cognitive decline within individuals provide better indications of movement along the AD trajectory compared to cross-sectional models? To address these questions, three Specific Aims assessed relationships between multiple biomarkers and both their cross-sectional and longitudinal associations with brain change. Specifically, analyses were performed to investigate whether biomarkers for amyloid and neural injury predict longitudinal brain amyloid accumulation (Specific Aim 1), white matter microstructural changes (Specific Aim 2), and cognitive decline (Specific Aim 3) in late-middle-aged adults with elevated risk of AD due to parental family history and genetic factors. As hypothesized, measures of co-occurring amyloidosis and neural injury were more commonly associated with disease outcomes than markers of a single pathology, and longitudinal models enabled detection of early pathological and cognitive decline often not possible with cross-sectional approaches. This dissertation provides important contributions to the field by assessing the preclinical phase of AD using a unique cohort of individuals who were middle-aged and cognitively healthy at study entry and who are enriched with risk factors for AD; by investigating an extensive panel of multimodal biomarkers; and by examining longitudinally measured change within individuals in terms of both biomarker levels and cognitive performance.
