Download or read book Common Pathways Linking Neurodegenerative Diseases The Role of Inflammation written by Grzegorz Kreiner and published by Frontiers Media SA. This book was released on 2021-11-01 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Propagation of Neurodegenerative Diseases by Inflammation and Exosomes written by Valerie Sackmann and published by Linköping University Electronic Press. This book was released on 2019-10-16 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alzheimer’s disease (AD) and Parkinson’s disease (PD) are the two most common neurodegenerative diseases with rates increasing along with the ageing global population. Despite best efforts, we still do not understand the etiopathogenesis of these diseases and there are no effective disease-modifying treatments. Cognitive deficiencies or motor complications that emerge during AD and PD are thought to be the result of the accumulation of misfolded, aggregate-prone proteins, such as amyloid-? (A?) and tau or ?-synuclein (?-syn), respectively. Growing evidence suggests that prefibrillar oligomers of A? and ?-syn (oA? and o?-syn) are key contributors to the progression of these diseases. The progressive accumulation of these proteins leads to a gradual spread of pathology throughout interconnected brain regions, but the mechanisms by which this spreading occurs are still largely unknown. Neuroinflammation has been recognised as an important contributor to neurodegenerative disease. It is hypothesised that a pro-inflammatory environment initiated by the innate immune system, either through activation from A? itself or indirectly through neuronal injury signals in AD. These phenomena are thought to either cause or accelerate AD, such that an anti-inflammatory approach may be neuroprotective. In paper I, we investigated whether different inflammatory environments affected the transfer of oA? between neuron-like cells, in addition to investigating inter- and intracellular protein changes. This study demonstrated that an anti-inflammatory environment reduces the transfer of oA? between cells. We also provide evidence that these cells begin to take on the “phenotype” of the inflammatory milieu, while also demonstrating that the expression profile of endosomal/lysosomal and protein trafficking proteins is altered during these conditions. Small extracellular vesicles called exosomes, which are key players in cell to cell communication, have been proposed to play an influential role in spreading neurodegenerative proteins between cells. Exosomes are small membranous vesicles that are formed by the inward budding of multivesicular bodies (MVBs). These MVBs can then merge with the plasma membrane to be released into the extracellular environment as vesicles, which serve as vehicles for transferring proteins, lipids, and mRNAs between cells. The ESCRT-dependent pathway is the most understood mechanism underlying exosome biogenesis. However, exosomes can also be formed through ESCRT-independent pathways, including through the hydrolysis of sphingomyelin by neutral sphingomyelinase 2 (nSMase2), which produces ceramide. Paper II investigated whether exosomes formed through an ESCRT-independent pathway plays a significant role in the transfer of o?-syn between neuron-like cells. As oxidative stress is a common feature in PD brains, which in turn dysregulates nSMase2 activity, we also tested our model under hypoxic conditions. Inhibition of nSMase2 significantly reduced the transfer of o?-syn between cells but also resulted in decreased ?-syn aggregation. Hypoxia did not influence o?-syn transfer, however, it significantly dysregulated the sphingolipid composition, which may be important for ?-syn binding to exosomes and exosome communication. During AD and PD, there is a noted reduction in the effectiveness of autophagy, a process critical to cellular proteostasis. Recent studies have uncovered shared regulatory mechanisms of exosome biogenesis and autophagy, suggesting that they are closely linked. Previous findings have shown that inhibition of autophagy in AD mice mediates A? trafficking through altering the secretion of A? in MVBs. To further study this effect, we investigated the interplay between autophagy and exosome secretion using ATG7 knock-out x APPNL-F knock-in AD mice in paper III. These autophagy-deficient AD mice had a reduced extracellular A? plaque load, but increased intracellular A?, which was found to be assembled into higher-ordered assemblies. While exosomal secretion was dysregulated in these mice, the amount of A? packaged into the exosomes was unchanged. Lastly, one of the biggest challenges in developing effective treatments for AD is the lack of early diagnosis of living patients. As the connection between exosomes and the spread of neurodegenerative proteins is still relatively new, there remains a diagnostic potential to be explored with exosomes. Paper IV aimed to develop a new diagnostic assay to detect oA? in exosomes isolated from human cerebrospinal fluid. Although exosomal oA? was readily detected in some of these samples, the assay’s sensitivity requires additional optimisation before it can be further validated for the clinic. In summary, the studies presented in this thesis have furthered our understanding of how inflammation, autophagy, and exosomes contribute to the intercellular transmission of AD and PD associated proteins. We have shown that an anti-inflammatory approach may slow down the progression of AD through reducing the transfer of oA? between cells. We also provide novel findings relating to the biogenesis of exosomes, which in turn affected the ability of exosomes to transmit neurodegenerative proteins between cells, and their association with autophagic processes. Finally, we have investigated the feasibility of exosomes as an early AD diagnostic marker. This work has helped to elucidate some of the mechanisms underlying the progression of neurodegenerative diseases, which may be useful targets for the investigation of new therapeutic avenues.

Download or read book Inflammation the Common Link in Brain Pathologies written by Nihar Jana and published by Springer. This book was released on 2016-08-13 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unifying theme of this book-with sections on mechanisms of defense and neuropathogenesis, neurological diseases, infections of the nervous system, neuropharmacology, and novel therapies-is interactions of the immune and nervous systems. It also discusses the role of inflammation as a key mediator of different brain disorders. There have been significant scientific advances in the multidisciplinary field of neuroimmunology / neuroinflammation in the past decade, and this book, edited under the guidance of Professor P. N. Tandon, fosters communication between those who share an interest in this exciting area, including neuroscientists, immunologists, cell biologists, clinicians and neuropharmacologists.

Download or read book Role of Inflammation in Neurodegenerative Diseases written by Maya Koronyo-Hamaoui and published by Frontiers Media SA. This book was released on 2022-07-13 with total page 461 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Inflammation Lifestyle and Chronic Diseases written by Bharat B. Aggarwal and published by CRC Press. This book was released on 2011-07-27 with total page 515 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oxidative stress and inflammation are among the most important factors of disease. Chronic infections, obesity, alcohol and tobacco usage, radiation, environmental pollutants, and high-calorie diets have been recognized as major risk factors for a variety of chronic diseases from cancer to metabolic diseases. All these risk factors are linked to chronic diseases through inflammation. While short-term, acute inflammation generated by the immune system serves a therapeutic role, chronic low-level inflammation that may persist "silently" for decades is responsible for chronic diseases. Inflammation, Lifestyle, and Chronic Diseases: The Silent Link describes the role of dysregulated inflammation in persistent and recurring diseases. It investigates links to lifestyle and presents research on how the suppression of proinflammatory pathways may provide opportunities for both prevention and treatment of chronic diseases. The book covers neurodegenerative diseases, pulmonary diseases, asthma, rheumatic and arthritic diseases, skin disease, heart disease, chronic wounds, infectious disease, neuropsychiatric disorders such as depression, gastrointestinal diseases, insulin resistance, and cancer, many of which are also diseases of old age. For each chronic disease, contributors review the clinical and scientific literature and examine current and potential therapies, including conventional pharmacotherapies as well as natural products. Noting that the long-term use of steroids and nonsteroidal anti-inflammatory drugs (NSAIDs) can cause adverse side effects, many of the chapters address the role of dietary agents such as fruits, vegetables, legumes, pulses, nuts, and spices as ideal anti-inflammatory agents that can be consumed regularly. The book also suggests directions for further research. Clinical and science researchers, students, and health professionals interested in the link between inflammation, lifestyle, and chronic diseases will find this an informative resource.

Download or read book Clinical Immunology written by Robert R. Rich and published by Mosby Incorporated. This book was released on 2008 with total page 1578 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offers answers to challenges in clinical immunology. This book contains immunology knowledge and includes a companion web site to give you two ways to find the answers you need.

Download or read book The Molecular and Cellular Basis of Neurodegenerative Diseases written by Michael S. Wolfe and published by Academic Press. This book was released on 2018-03-29 with total page 561 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Molecular and Cellular Basis of Neurodegenerative Diseases: Underlying Mechanisms presents the pathology, genetics, biochemistry and cell biology of the major human neurodegenerative diseases, including Alzheimer's, Parkinson's, frontotemporal dementia, ALS, Huntington's, and prion diseases. Edited and authored by internationally recognized leaders in the field, the book's chapters explore their pathogenic commonalities and differences, also including discussions of animal models and prospects for therapeutics. Diseases are presented first, with common mechanisms later. Individual chapters discuss each major neurodegenerative disease, integrating this information to offer multiple molecular and cellular mechanisms that diseases may have in common. This book provides readers with a timely update on this rapidly advancing area of investigation, presenting an invaluable resource for researchers in the field. - Covers the spectrum of neurodegenerative diseases and their complex genetic, pathological, biochemical and cellular features - Focuses on leading hypotheses regarding the biochemical and cellular dysfunctions that cause neurodegeneration - Details features, advantages and limitations of animal models, as well as prospects for therapeutic development - Authored by internationally recognized leaders in the field - Includes illustrations that help clarify and consolidate complex concepts

Download or read book Frontotemporal Dementia Syndromes written by John R. Hodges and published by . This book was released on 2007-11-08 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 2007 book provides a much needed review of frontotemporal dementia and related syndromes.

Download or read book Proteostasis and Disease written by Rosa Barrio and published by Springer Nature. This book was released on 2020-04-09 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, written by members of the European network PROTEOSTASIS, provides an up-to-date review of the research regarding protein homeostasis in health and disease. With new discoveries contributing to the increasing complexity of this topic, the book offers a detailed overview of the pathways regulating protein homeostasis, including autophagy and the ubiquitin protein family. Following a basic introduction, it explains how defects in protein homeostasis contribute to numerous pathologies, including cancer, neurodegeneration, inflammation and a number of rare diseases. In addition, it discusses, the role of protein homeostasis in cellular development and physiology. Highlighting the latest research in the field of protein homeostasis and its implications for various clinically relevant diseases, the book appeals to researchers and clinicians, while also offering a reference guide for scholars who are new to the field.

Download or read book Transactions of the Royal Society of South Australia Incorporated written by Royal Society of South Australia and published by . This book was released on 1951 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Apolipoprotein E and Alzheimer s Disease written by A.D. Roses and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is now considerable genetic evidence that the type 4 allele of the apolipoprotein E gene is a major susceptibility factor associated with late-onset Alzheimer's disease, the common form of the disease defined as starting after sixty years of age. The role of apolipoprotein E in normal brain metabolism and in the pathogenesis of Alzheimer's disease are new and exciting avenues of research. This book, written by the most outstanding scientists in this new filed, is the first presentation of results concerning the implications of apolipoprotein E on the genetics, cell biology, neuropathology, biochemistry, and therapeutic management of Alzheimer's disease.

Download or read book Etiology of Parkinson s Disease written by Jonas H. Ellenberg and published by CRC Press. This book was released on 1995-03-01 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive reference provides a detailed overview of current concepts regarding the cause of Parkinson's disease-emphasizing the issues involved in the design, implementation, and analysis of epidemiological studies of parkinsonism.

Download or read book Diabetes and the Nervous System written by Douglas W. Zochodne and published by Elsevier. This book was released on 2014-12-26 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a unique compilation, by experts worldwide, addressing how diabetes impacts the nervous system. For example, diabetic polyneuropathy, a disorder more common than MS, Parkinson's disease, and ALS combined, is a major source of disability to diabetic persons worldwide. This book addresses diabetic polyneuropathy and how diabetes alters other parts of the nervous system.

Download or read book The Physiology of Inflammation The Final Common Pathway to Disease written by Alexandrina Ferreira Mendes and published by Frontiers Media SA. This book was released on 2019-02-20 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chronic diseases are increasingly recognized as involving low grade inflammation, that is, a self-perpetuating tissue response to stress caused by exogenous or endogenous triggers, that progressively evokes danger-associated molecular pattern release, ultimately driving tissue damage and loss of function. This response is frequently unapparent clinically, thus the designation "low grade". This eBook comprises nineteen reviews and original articles that provide the most updated knowledge on the causes and roles of this inflammatory response in a variety of diseases and conditions. The editorial that precedes these articles not only summarizes each one, but provides a broader interpretation of the role of inflammation in health and a variety of disease conditions, the underlying mechanisms and the targets more promising for therapy. Finally, it also highlights the most relevant and emerging research topics that are already shaping future directions for the development of more fine-tuned and innovative therapies.

Download or read book GeNeDis 2018 written by Panayiotis Vlamos and published by Springer Nature. This book was released on 2020-05-28 with total page 497 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 3rd World Congress on Genetics, Geriatrics, and Neurodegenerative Disease Research (GeNeDis 2018), focuses on recent advances in genetics, geriatrics, and neurodegeneration, ranging from basic science to clinical and pharmaceutical developments. It also provides an international forum for the latest scientific discoveries, medical practices, and care initiatives. Advanced information technologies are discussed, including the basic research, implementation of medico-social policies, and the European and global issues in the funding of long-term care for elderly people.

Download or read book Oxidative Stress and Neurodegenerative Disorders written by G. Ali Qureshi and published by Elsevier. This book was released on 2007-03-22 with total page 795 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oxidative stress is the result of an imbalance in pro-oxidant/antioxidant homeostasis that leads to the generation of toxic reactive oxygen species. Brain cells are continuously exposed to reactive oxygen species generated by oxidative metabolism, and in certain pathological conditions defense mechanisms against oxygen radicals may be weakened and/or overwhelmed. DNA is a potential target for oxidative damage, and genomic damage can contribute to neuropathogenesis. It is important therefore to identify tools for the quantitative analysis of DNA damage in models on neurological disorders. This book presents detailed information on various neurodegenerative disorders and their connection with oxidative stress. This information will provide clinicians with directions to treat these disorders with appropriate therapy and is also of vital importance for the drug industries for the design of new drugs for treatment of degenerative disorders.* Contains the latest information on the subject of neurodegenerative disorders* Reflects on various factors involved in degeneration and gives suggestions for how to tackle these problems

Download or read book The Brain Under Siege written by Howard L. Weiner and published by BenBella Books. This book was released on 2021-10-26 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1 in 6 people suffer from brain diseases like MS, Parkinson’s, and Alzheimer’s. Now, a Harvard neurologist takes you inside the brain under attack—and illuminates the path to a cure. Multiple Sclerosis. Parkinson’s Disease. Alzheimer’s. ALS. Chances are, you know someone with a neurologic disease. Because the brain controls so much and is integral to our identity, the diseases that affect it are uniquely devastating both to patients and families. And because it remains the most mysterious of our vital organs, treating the brain is an ongoing puzzle. In The Brain Under Siege, Howard Weiner likens the brain to a crime scene, showing readers how “clues” point to causes and suggest paths to a cure. He takes readers on a journey through the latest technological advances, exploring which routes of investigation have gone cold and which have led to breakthroughs. Readers couldn’t ask for a better guide: A professor of neurology at Harvard Medical School and co-director of the Ann Romney Center for Neurologic diseases, Weiner is an internationally renowned expert, who pioneered immunotherapy in MS and is currently investigating an Alzheimer’s vaccine. Informative and engaging, this groundbreaking book tells the story behind the science—painting a picture of the discoveries, setbacks, false leads, and victories on the front lines of brain research. Weiner also offers unique insight by exploring the experiences of the brave patients and families who make cutting-edge clinical trials possible. Both a clear-eyed assessment of where the science stands and a gripping and poignant narrative of the dramatic pursuit for a cure, The Brain Under Siege is a must-read for patients, families, and anyone interested in unraveling the mysteries of the brain.