The Effects Of Green Fluorescent Protein Tagging On Tau Protein In In Vitro And Cell Based Models Mimicking Alzheimer S Disease Pathology
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The Effects Of Green Fluorescent Protein Tagging On Tau Protein In In Vitro And Cell Based Models Mimicking Alzheimer S Disease Pathology
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Author : Nabil Darwich
language : en
Publisher:
Release Date : 2013
The Effects Of Green Fluorescent Protein Tagging On Tau Protein In In Vitro And Cell Based Models Mimicking Alzheimer S Disease Pathology written by Nabil Darwich and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
Tau Protein
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Author : Caroline Smet-Nocca
language : en
Publisher: Springer Nature
Release Date :
Tau Protein written by Caroline Smet-Nocca and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
Alzheimer S And Parkinson S Diseases
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Author : Abraham Fisher
language : en
Publisher: Karger Medical and Scientific Publishers
Release Date : 2007
Alzheimer S And Parkinson S Diseases written by Abraham Fisher and has been published by Karger Medical and Scientific Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Medical categories.
This issue is a dedicated supplement published in addition to the regular issues of 'Neurodegenerative Diseases' containing congress abstracts. 'Neurodegenerative Diseases' is a well-respected, international peer-reviewed journal in Neurology. Supplement issues are included in the subscription.
The Cerebral Cortex In Neurodegenerative And Neuropsychiatric Disorders
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Author : David F. Cechetto
language : en
Publisher: Academic Press
Release Date : 2016-10-14
The Cerebral Cortex In Neurodegenerative And Neuropsychiatric Disorders written by David F. Cechetto and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-10-14 with Medical categories.
The Cerebral Cortex in Neurodegenerative and Neuropsychiatric Disorders: Experimental Approaches to Clinical Issues focuses on how pre-clinical investigations are addressing the clinical issues surrounding the involvement of the cerebral cortex in selected conditions of the nervous system, including Alzheimer’s Disease, Parkinson’s, addiction, and cardiovascular dysregulation. Each chapter is written by an expert in his/her field who provides a comprehensive review of the clinical manifestations of cortical involvement and experimental techniques currently available to tackle cortical issues in disease. Thus, this present title provides a link between cortical clinical problems and investigational approaches to help foster future research with high translational value. Offers a comprehensive overview on the best available in vivo and in vitro models to study cortical involvement Presents models and specific techniques that help to guide investigators in their choices on how to address research questions experimentally Provides expert commentary and a perspective on future trends at the end of each chapter Addresses translational advances and promising therapeutic options Includes references to key articles for additional detailed study
Systems Biology Of Free Radicals And Antioxidants
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Author : Ismail Laher
language : en
Publisher: Springer
Release Date : 2014-06-16
Systems Biology Of Free Radicals And Antioxidants written by Ismail Laher and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-06-16 with Medical categories.
The focus of this collection of illustrated reviews is to discuss the systems biology of free radicals and anti-oxidants. Free radical induced cellular damage in a variety of tissues and organs is reviewed, with detailed discussion of molecular and cellular mechanisms. The collection is aimed at those new to the field, as well as clinicians and scientists with long standing interests in free radical biology. A feature of this collection is that the material also brings insights into various diseases where free radicals are thought to play a role. There is extensive discussion of the success and limitations of the use of antioxidants in several clinical settings.
Tau Biology
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Author : Akihiko Takashima
language : en
Publisher: Springer Nature
Release Date : 2020-02-24
Tau Biology written by Akihiko Takashima and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-02-24 with Medical categories.
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.
The Propagation Of Neurodegenerative Diseases By Inflammation And Exosomes
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Author : Valerie Sackmann
language : en
Publisher: Linköping University Electronic Press
Release Date : 2019-10-16
The Propagation Of Neurodegenerative Diseases By Inflammation And Exosomes written by Valerie Sackmann and has been published by Linköping University Electronic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-10-16 with categories.
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.
Cognitive Disorders
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Author : Humberto Foyaca Sibat
language : en
Publisher:
Release Date : 2019
Cognitive Disorders written by Humberto Foyaca Sibat and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with Cognition disorders categories.
Tau Oligomers
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Author : Jesus Avila
language : en
Publisher: Frontiers E-books
Release Date : 2014-08-18
Tau Oligomers written by Jesus Avila and has been published by Frontiers E-books this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-08-18 with Medicine (General) categories.
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”.
Neurodegeneration In Multiple Sclerosis
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Author : M. Filippi
language : en
Publisher: Springer Science & Business Media
Release Date : 2008-02-01
Neurodegeneration In Multiple Sclerosis written by M. Filippi and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-02-01 with Medical categories.
Written by world-renowned scientists, the volume provides a state-of-the-art on the most recent MRI techniques related to MS, and it is an indispensable tool for all those working in this field. The context in which this book exists is that there is an increasing perception that modern MR methodologies should be more extensively employed in clinical trials to derive innovative information.