Download or read book Tau oligomers written by Jesus Avila and published by Frontiers E-books. This book was released on 2014-08-18 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neurofibrillary tangles (NFTs) composed of intracellular aggregates of tau protein are a key neuropathological feature of Alzheimer’s Disease (AD) and other neurodegenerative diseases, collectively termed tauopathies. The abundance of NFTs has been reported to correlate positively with the severity of cognitive impairment in AD. However, accumulating evidences derived from studies of experimental models have identified that NFTs themselves may not be neurotoxic. Now, many of tau researchers are seeking a “toxic” form of tau protein. Moreover, it was suggested that a “toxic” tau was capable to seed aggregation of native tau protein and to propagate in a prion-like manner. However, the exact neurotoxic tau species remain unclear. Because mature tangles seem to be non-toxic component, “tau oligomers” as the candidate of “toxic” tau have been investigated for more than one decade. In this topic, we will discuss our consensus of “tau oligomers” because the term of “tau oligomers” [e.g. dimer (disulfide bond-dependent or independent), multimer (more than dimer), granular (definition by EM or AFM) and maybe small filamentous aggregates] has been used by each researchers definition. From a biochemical point of view, tau protein has several unique characteristics such as natively unfolded conformation, thermo-stability, acid-stability, and capability of post-translational modifications. Although tau protein research has been continued for a long time, we are still missing the mechanisms of NFT formation. It is unclear how the conversion is occurred from natively unfolded protein to abnormally mis-folded protein. It remains unknown how tau protein can be formed filaments [e.g. paired helical filament (PHF), straight filament and twisted filament] in cells albeit in vitro studies confirmed tau self-assembly by several inducing factors. Researchers are still debating whether tau oligomerization is primary event rather than tau phosphorylation in the tau pathogenesis. Inhibition of either tau phosphorylation or aggregation has been investigated for the prevention of tauopathies, however, it will make an irrelevant result if we don’t know an exact target of neurotoxicity. It is a time to have a consensus of definition, terminology and methodology for the identification of “tau oligomers”.
Download or read book Tau Protein written by Caroline Smet-Nocca and published by Springer Nature. This book was released on with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tau Biology written by Akihiko Takashima and published by Springer Nature. This book was released on 2020-02-24 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents essential studies and cutting-edge research results on tau, which is attracting increasing interest as a target for the treatment of Alzheimer's disease. Tau is well known as a microtubule-associated protein that is predominantly localized in the axons of neurons. In various forms of brain disease, neuronal loss occurs, with deposition of hyperphosphorylated tau in the remaining neurons. Important questions remain regarding the way in which tau forms hyperphosphorylated and fibrillar deposits in neurons, and whether tau aggregation represents the toxic pathway leading to neuronal death. With the help of new technologies, researchers are now solving these long-standing questions. In this book, readers will find the latest expert knowledge on all aspects of tau biology, including the structure and role of the tau molecule, tau localization and function, the pathology, drivers, and markers of tauopathies, tau aggregation, and treatments targeting tau. Tau Biology will be an invaluable source of information and fresh ideas for those involved in the development of more effective therapies and for all who seek a better understanding of the biology of the aging brain.
Download or read book GeNeDis 2014 written by Panayiotis Vlamos and published by Springer. This book was released on 2014-11-22 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 1st World Congress on Geriatrics and Neurodegenerative Disease Research (GeNeDis 2014), will focus on recent advances in geriatrics and neurodegeneration, ranging from basic science to clinical and pharmaceutical developments and will provide an international forum for the latest scientific discoveries, medical practices and care initiatives. Advances information technologies will be discussed along with their implications for various research, implementation and policy concerns. In addition, the conference will address European and global issues in the funding of long-term care and medico-social policies regarding elderly people. GeNeDis 2014 takes place in Corfu, Greece, 10-13 April 2014. This volume focuses on the sessions that address neurodegenerative diseases.
Download or read book Protein Misfolding Diseases written by Marina Ramirez-Alvarado and published by John Wiley & Sons. This book was released on 2010-12-01 with total page 1311 pages. Available in PDF, EPUB and Kindle. Book excerpt: An increasingly aging population will add to the number of individuals suffering from amyloid. Protein Misfolding Diseases provides a systematic overview of the current and emerging therapies for these types of protein misfolding diseases, including Alzheimer's, Parkinson's, and Mad Cow. The book emphasizes therapeutics in an amyloid disease context to help students, faculty, scientific researchers, and doctors working with protein misfolding diseases bridge the gap between basic science and pharmaceutical applications to protein misfolding disease.
Download or read book Cytoskeleton of the Nervous System written by Ralph A. Nixon and published by Springer Science & Business Media. This book was released on 2011-02-04 with total page 775 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph begins with a general description of the cytoskeleton in axonal development and pathology and then moves to more detailed descriptions of particular components, including microtubules and associated proteins, neurofilaments and interacting proteins, actin and its binding proteins, and glial fibrillary acidic protein. The later chapters focus on the functional significance of the neuronal cytoskeleton in axonal transport and its regulation in health and disease states. The Cytoskeleton of the Nervous System will encourage further development of unifying principles and stimulate new conceptual and technical approaches toward a better understanding of cytoskeleton functions in health and disease.
Download or read book A Paradigm Shift to Prevent and Treat Alzheimer s Disease written by Howard Friel and published by Academic Press. This book was released on 2017-07-18 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Paradigm Shift to Prevent and Treat Alzheimer’s Disease: From Monotargeting Pharmaceuticals to Pleiotropic Plant Polyphenols is the first book to systematically exhibit the powerful pleiotropic pharmacological effects on Alzheimer’s disease of plant-based compounds from ancient foods that humans have been consuming safely with substantial health benefits for thousands of years. These plant-based compounds include curcuminoids from turmeric, resveratrol from red wine and grape seed extract from other grape products, epigallocatechin-gallate (EGCG) from green tea, and oleocanthal and oleuropein from olive oil, in addition to a special extract, EGb 761, from the leaves of Ginkgo biloba, the oldest living species of tree on earth. This book also presents a new analytical framework that convincingly favors a multi-targeting ("pleiotropic") approach to the prevention and treatment of complex chronic diseases, in contrast to the mono-targeting of the pharmaceutical model. A Paradigm Shift to Prevent and Treat Alzheimer’s Disease is a unique and exciting resource for pharmaceutical scientists, pharmacologists, neurologists, general practitioners, research scientists in various medical and life sciences, healthcare professionals in clinical and executive positions, conventional medical schools, schools of naturopathic medicine, healthcare and medical journalists, executives in both national public healthcare systems and private insurers, and informed general readers. Presents carefully compiled evidence supporting the need to shift from pharmaceutical-based mono-targeting to plant polyphenol-based pleiotropic targeting for the prevention and treatment of Alzheimer’s disease Includes valuable tables that aggregate pleiotropic pharmacological effects of the plant polyphenols on Alzheimer’s disease-related pathogenic hallmarks Highlights regulatory aspects and discusses the challenges and potential solutions with respect to bioavailability of certain plant polyphenols
Download or read book Alzheimer s Disease written by Thimmaiah Govindaraju and published by Royal Society of Chemistry. This book was released on 2022-01-04 with total page 695 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alzheimer’s disease is an increasingly common form of dementia and despite rising interest in discovery of novel treatments and investigation into aetiology, there are no currently approved treatments that directly tackle the causes of the condition. Due to its multifactorial pathogenesis, current treatments are directed against symptoms and even precise diagnosis remains difficult as the majority of cases are diagnosed symptomatically and usually confirmed only by autopsy. Alzheimer’s Disease: Recent Findings in Pathophysiology, Diagnostic and Therapeutic Modalities provides a comprehensive overview from aetiology and neurochemistry to diagnosis, evaluation and management of Alzheimer's disease, and latest therapeutic approaches. Intended to provide an introduction to all aspects of the disease and latest developments, this book is ideal for students, postgraduates and researchers in neurochemistry, neurological drug discovery and Alzheimer’s disease.
Download or read book Aging Mechanisms II written by Nozomu Mori and published by Springer Nature. This book was released on 2022-04-28 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the recent advancement of basic research on the biology of aging and longevity studies in various organisms, as well as the neurobiology of aging and neurodegeneration mechanisms. Chapters present new findings and conceptual developments concerning the basic mechanisms of aging and longevity determination. As a follow-up volume to the previous book Aging Mechanisms (2015), it overviews the rapid progress of aging research introducing new topics from leading laboratories in Japan. Chapter contributors are selected based on recent scientific achievements on the mechanisms of aging in various model organisms, including yeast, worm (C. elegans), fly (Drosophila), mice, and rats. Chapters are ordered from the discussion on molecular and cellular levels to physiological and systemic levels. The book also provides an overview of aging science in the region and helps readers quickly grasp who is doing what in this research area. As the aging of population becomes an ever more pressing issue in Asia, advancing the understanding of basic mechanisms of organism aging and longevity determination will be crucial to developing more effective therapies and protective strategies. Researchers and graduate students in biomedical aging research will find this as a rich source of information and a stimulus to novel research directions.
Download or read book Methods in Tau Cell Biology written by and published by Academic Press. This book was released on 2017-08-29 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: Methods in Tau Cell Biology, Volume 141, the latest release in the Methods in Cell Biology series, looks at methods involved in tau cell biology. Edited by leaders in the field, this volume provides proven, state-of-art techniques and relevant historical background and theory that aids researchers with tactics for efficient design and effective implementation of experimental methodologies. Topics of note in this updated volume include sections on Recombinant tau expression and purification, In vitro MT dynamics and MT ends, Methods related to investigating tau structure and MT bundling, Neurite outgrowth and retraction, and Methods related to studying tau fragmentation. Covers sections on Tau Cell Biology Written by experts in the field of cell biology Includes cutting-edge materials
Download or read book Horizon in Frontotemporal Lobar Degeneration Related Disorder written by Liyong Wu and published by Frontiers Media SA. This book was released on 2023-10-16 with total page 133 pages. Available in PDF, EPUB and Kindle. Book excerpt: Frontotemporal lobar degeneration (FTLD) encompasses a spectrum of focal neurodegenerative disorders with progressive atrophy of the frontal and temporal lobes. FTLD-related disorders are heterogeneous clinical conditions characterized by social dysfunction and personality changes as well as impairments in language, executive and motor functions. Current clinical diagnostic criteria characterize specific manifestations of FTLD, including transtemporal behavioral dementia (bvFTD), primary progressive aphasia with agrammatic variant (avPPA) and semantic variant (svPPA) subtypes, and movement disorders, including progressive supranuclear palsy (PSP), corticobasal syndrome (CBS), and FTD with amyotrophic lateral sclerosis (FTD-ALS).
Download or read book Protein Aggregation written by Andrzej Stanisław Cieplak and published by Springer Nature. This book was released on 2022-10-30 with total page 673 pages. Available in PDF, EPUB and Kindle. Book excerpt: The volume details techniques, methods, and conceptual developments to further the study of protein aggregation with emphasis on the pleiomorphic proteins implicated in etiology of neurodegeneration. Chapters guide readers through in vitro and in vivo studies of fibrillization and liquid-liquid phase separation processes, and offer a comprehensive account of the state-of-art of structural studies of protein aggregation. Written in the format of the highly successful Methods in Molecular Biology series, each chapter includes an introduction to the topic, lists necessary materials and reagents, includes tips on troubleshooting and known pitfalls, and step-by-step, readily reproducible protocols. Authoritative and cutting-edge, Protein Aggregation: Methods and Protocols aims to be useful and practical guide to new researchers and experts looking to expand their knowledge.
Download or read book Immunology written by M. A. Hayat and published by Academic Press. This book was released on 2017-10-31 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: Immunology, Volume 1: Immunotoxicology, Immunopathology, and Immunotherapy discusses the investment of time, effort and finance that go into making progress in preventing and/or curing serious diseases by using standard treatments (chemotherapy, radiotherapy, surgery, and hormone therapy). The use of these treatments is accompanied by unavoidable, devastating side effects. At the cost of being repetitious, it has to be emphasized that an improved understanding of the immune system, avoidance of unhealthy habits (e.g., smoking, intake of alcohol, perpetual stress, and lack of exercise) and early detection (using biomarkers) are the only three friends we have to at least delay the onset of serious diseases. Presents the most advanced information regarding the role of autophagy and immunity Introduces new, more effective therapeutic strategies in the development of targeted drugs and programmed cell death Edited work with chapters authored by leaders from around the globe – the broadest, most expert coverage available
Download or read book Non fibrillar Amyloidogenic Protein Assemblies Common Cytotoxins Underlying Degenerative Diseases written by Farid Rahimi and published by Springer Science & Business Media. This book was released on 2012-01-11 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amyloid-forming proteins are implicated in over 30 human diseases. The proteins involved in each disease have unrelated sequences and dissimilar native structures, but they all undergo conformational alterations to form fibrillar polymers. The fibrillar assemblies accumulate progressively into disease-specific lesions in vivo. Substantial evidence suggests these lesions are the end state of aberrant protein folding whereas the actual disease-causing culprits likely are soluble, non-fibrillar assemblies preceding the aggregates. The non-fibrillar protein assemblies range from small, low-order oligomers to spherical, annular, and protofibrillar species. Oligomeric species are believed to mediate various pathogenic mechanisms that lead to cellular dysfunction, cytotoxicity, and cell loss, eventuating in disease-specific degeneration and systemic morbidity. The particular pathologies thus are determined by the afflicted cell types, organs, systems, and the proteins involved. Evidence suggests that the oligomeric species may share structural features and possibly common mechanisms of action. In many cases, the structure–function interrelationships amongst the various protein assemblies described in vitro are still elusive. Deciphering these intricate structure–function correlations will help understanding a complex array of pathogenic mechanisms, some of which may be common across different diseases albeit affecting different cell types and systems.
Download or read book Protein Folding Disorders Of The Central Nervous System written by Ghiso Jorge A and published by World Scientific. This book was released on 2017-09-15 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: This exciting new book explores the dark side of the molecular protein assembly bringing an updated view of how failures in the homeostatic mechanisms that efficiently regulate protein folding leads to the accumulation of structurally abnormal pathogenic assemblies, encompassing an emerging group of diseases collectively known as "Protein Folding Disorders." This complex and diverse group of chronic and progressive entities are bridged together by their relationship to structural transitions in the native state of specific proteinaceous components, which for reasons poorly understood, convert into polymeric aggregates that generate poorly soluble tissue deposits and which are considered today the culprit of the disease pathogenesis in their respective diseases. Despite the diversity in the amino acid sequence of the different proteins involved in these heterogeneous disorders, all the pathologic conformers can trigger cascades of events ultimately resulting in cell dysfunction and death with devastating clinical consequences in many of the most precious aspects of human existence including personality, cognition, memory, and skilled movements. This book, which is composed of a compilation of chapters authored by outstanding and well-published scientists in the respective fields currently performing active investigations at world renowned universities and research centers, focuses on the growing number of diseases associated with protein misfolding in the central nervous system. Individual chapters are dedicated to the most common neurodegenerative diseases associated with protein aggregation/fibrillization focusing on the nature of the pathogenic species and the cellular pathways involved in the molecular pathogenesis of Alzheimer's, Parkinson's, and Huntington's diseases as well as in Amyotrophic Lateral Sclerosis, and Prion disorders. A group of contributions is centered on the current knowledge of the intracellular pathways and subcellular organelles affected by the different disease conditions, while others are focused in the emerging pathogenic role of misfolded subunits assembled into neurotoxic soluble oligomers, and in the novel notion of the transmissibility of the protein misfolded species, an innovative concept until recently only accepted for Prion diseases. Lastly, a different set of chapters is dedicated to the evaluation of novel therapeutic strategies for these devastating diseases. Contents: Misfolding, Aggregation, and Amyloid Formation: The Dark Side of Proteins (Agueda Rostagno and Jorge A Ghiso)Oligomers at the Synapse: Synaptic Dysfunction and Neurodegeneration (Emily Vogler, Matthew Mahavongtrakul, and Jorge Busciglio)Prion-Like Protein Seeding and the Pathobiology of Alzheimer's Disease (Lary C Walker)The Tau Misfolding Pathway to Dementia (Alejandra D Alonso, Leah S Cohen, and Viktoriya Morozova)The Biology and Pathobiology of α-Synuclein (Joel C Watts, Anurag Tandon, and Paul E Fraser)Impact of Loss of Proteostasis on Central Nervous System Disorders (Sentiljana Gumeni, Eleni N Tsakiri, Christina-Maria Cheimonidi, Zoi Evangelakou, Despoina Gianniou, Kostantinos Tallas, Eleni-Dimitra Papanagnou, Aimilia D Sklirou, and Ioannis P Trougakos)Protein Misfolding and Mitochondrial Dysfunction in Amyotrophic Lateral Sclerosis (Giovanni Manfredi and Hibiki Kawamata)Impact of Mitostasis and the Role of the Anti-Oxidant Responses on Central Nervous System Disorders (Sentiljana Gumeni, Eleni N Tsakiri, Christina-Maria Cheimonidi, Zoi Evangelakou, Despoina Gianniou, Kostantinos Tallas, Eleni-Dimitra Papanagnou, Aimilia D Sklirou, and Ioannis P Trougakos)Propagation of Misfolded Proteins in Neurodegeneration: Insights and Cautions from the Study of Prion Disease Prototypes (Robert C C Mercer, Nathalie Daude,
Download or read book Neuroprotection in Alzheimer s Disease written by Illana Gozes and published by Academic Press. This book was released on 2016-12-30 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neuroprotection in Alzheimer’s Disease offers a translational point-of-view from both basic and clinical standpoints, putting it on the cusp for further clinical development with its emphasis on nerve cell protection, including the accumulation of knowledge from failed clinical trials and new advances in disease management. This book brings together the latest findings, both basic, and clinical, under the same cover, making it easy for the reader to obtain a complete overview of the state-of-the-field and beyond. Alzheimer's disease is the most common form of dementia, accounting for 60 to 80 percent of dementia cases. It is a progressive brain disease that slowly destroys memory, thinking skills, and eventually, even the ability to carry out the simplest tasks. It is characterized by death of synapses coupled to death nerve cells and brain degeneration which is manifested by loss of cognitive abilities. Understanding neuroprotection in Alzheimer’s disease will pave the path to better disease management and novel therapeutics. Comprehensive reference detailing neuroprotection in Alzheimer’s Disease, with details on nerve cell protection and new advances in disease management Combines the knowledge and points-of-view of both medical doctors and basic scientists, putting the subject at the forefront for further clinical development Edited by one of the leading researchers in Alzheimer’s Disease
Download or read book Neurological Functions of the Masterswitch Protein Kinase GSK 3 written by Oksana Kaidanovich-Beilin and published by Frontiers E-books. This book was released on with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: The functions of the brain that allow us to think, feel, move, and perceive the world are the result of an exchange of information within a network composed of millions of specialized cells called neurons and glia. Neurons use neurotransmitters and other extracellular messengers to communicate with each other, and to constantly update and re-organize their network of connections in a process known as neural plasticity. In order to respond to these extracellular signals, neurons are equipped with specialized receptors that can recognize a single neurotransmitter a bit like a lock would recognize a key. They do this by activating or inhibiting a class of specialized signaling proteins and second messengers. Typically, signaling proteins are themselves organized in networks or pathways in which they activate or inhibit each other in order to integrate the mass of information received by a single cell and to regulate the biological functions of this cell. As we can see, rather than simply being a network of neurons, the brain can be seen as a sort of “Russian doll” in which each neuron is at the same time a part of networks with other neurons and the receptacle of many networks composed of signaling proteins. Two individual genes encode two paralogous signaling proteins: Glycogen Synthase Kinase -3 alpha and beta (GSK-3a, GSK-3b), named for its ability to phosphorylate a key metabolic enzyme of glycogen synthesis, glycogen synthase. This unique “glamour and gloom” protein kinase, has been intriguing many researches for over 30 years by its unusual features, still unknown mechanisms of its activation, its regulation by multiple “key” intracellular pathways, and its capacity to influence the functions of many substrates. Since GSK-3 was discovered, there has been significant progress in elucidating its regulatory roles in the neuron and the structure and functions of the brain. Lithium has been used as a gold standard in the treatment of bipolar disorder for 60 years; and “GSK-3’s renaissance” in psychiatry began with the discovery of GSK-3 as lithium's intracellular target. Since then, GSK3 has been implicated in the pathogenesis of mood disorders, schizophrenia, Alzheimer’s disease, ADHD, multiple sclerosis, Fragile X syndrome and Huntington disease. Connections to these and other diseases has led over the last 10 years to the generation of multiple types of GSK-3 inhibitors as promising therapeutic treatments for the aforementioned pathological conditions. During last couple years new genetic models have been generated, including conventional and conditional mouse models, allowing the discovery of new roles of GSK-3 in the mechanism of neurotransmitter action, neurodevelopment, learning and memory formation, GSK-3’s gene - effect on mouse behavior, and other functions. Thus, GSK-3 has been well-established as an intracellular second messenger for several neurotransmitter systems, and as an important therapeutic target of mood stabilizers, antipsychotics and psychomimetic drugs. The proposed Specific Topic for Frontiers in Neuroscience will be focused on the latest advances from leading laboratories in this area, subdivided into 5 topics: (1) GSK-3 history, mechanism of regulation, substrate specificity and comparison between the brain function of two GSK-3 genes through new animal models and cell biology approaches; (2) role of GSK-3 in neurodevelopment and neuronal structure; (3) involvement of GSK-3 in synaptic functions, learning and memory, and in serotonin and dopamine pathways; (4) role of GSK-3 in neuroinflammation, and application to the pathogenesis of multiple sclerosis, AD, schizophrenia, Fragile X, brain tumors, stroke and bipolar disorder; (5) development of GSK-3 inhibitors and their application in psychiatry, including special discussion about the mechanism of lithium action.
