Non-neuronal cell heterogeneity in the nervous system during health and disease PDF Download

Author: Jason R. Plemel
Publisher: Frontiers Media SA
ISBN: 2832518419
Category : Science
Languages : en
Pages : 117

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Author: Leif Hertz
Publisher: Gulf Professional Publishing
ISBN: 9780444514516
Category : Electronic books
Languages : en
Pages : 416

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Annotation The brain, and the rest of the nervous system, consists of nerve cells (neurons) and non-neuronal cells (glial cells), which by far outnumber the neurons, but in the past have received much less attention. This began to change about 30 years ago with the realization that glial cells carry out very important functions, generally in collaboration with the nerve cells. Evidence is now starting to accumulate that glial cells, especially astrocytes and microglia, may be major (in some cases the main) players in a multitude of neurological and mental diseases, and that different types of glial cells interact not only with nerve cells but also with each other and with cells lining brain tissue and controlling exchange of nutrients and other compounds between the brain and the rest of the body. Understanding of these interactions during normal function and in disease states is hampered by the fact that general knowledge of cellular interactions during brain function is limited. These books present an attempt to remedy this situation. In the first two volumes, basic information about cell types and biochemical and physiological interactions between these cells is provided by leading experts in the field, and in the last part emerging evidence of the importance of such cellular interactions in several of the most important neurological and mental diseases is presented by leading researchers working actively in the field in question.

Author: L. Hertz
Publisher: Elsevier Science
ISBN: 9780444514516
Category : Science
Languages : en
Pages : 0

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Book Description
The brain, and the rest of the nervous system, consists of nerve cells (neurons) and non-neuronal cells (glial cells), which by far outnumber the neurons, but in the past have received much less attention. This began to change about 30 years ago with the realization that glial cells carry out very important functions, generally in collaboration with the nerve cells. Evidence is now starting to accumulate that glial cells, especially astrocytes and microglia, may be major (in some cases the main) players in a multitude of neurological and mental diseases, and that different types of glial cells interact not only with nerve cells but also with each other and with cells lining brain tissue and controlling exchange of nutrients and other compounds between the brain and the rest of the body. Understanding of these interactions during normal function and in disease states is hampered by the fact that general knowledge of cellular interactions during brain function is limited. These books present an attempt to remedy this situation. In the first two volumes, basic information about cell types and biochemical and physiological interactions between these cells is provided by leading experts in the field, and in the last part emerging evidence of the importance of such cellular interactions in several of the most important neurological and mental diseases is presented by leading researchers working actively in the field in question.

Author: L. Hertz
Publisher: Elsevier Science
ISBN: 9780444514516
Category : Medical
Languages : en
Pages : 0

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Book Description
The brain, and the rest of the nervous system, consists of nerve cells (neurons) and non-neuronal cells (glial cells), which by far outnumber the neurons, but in the past have received much less attention. This began to change about 30 years ago with the realization that glial cells carry out very important functions, generally in collaboration with the nerve cells. Evidence is now starting to accumulate that glial cells, especially astrocytes and microglia, may be major (in some cases the main) players in a multitude of neurological and mental diseases, and that different types of glial cells interact not only with nerve cells but also with each other and with cells lining brain tissue and controlling exchange of nutrients and other compounds between the brain and the rest of the body. Understanding of these interactions during normal function and in disease states is hampered by the fact that general knowledge of cellular interactions during brain function is limited. These books present an attempt to remedy this situation. In the first two volumes, basic information about cell types and biochemical and physiological interactions between these cells is provided by leading experts in the field, and in the last part emerging evidence of the importance of such cellular interactions in several of the most important neurological and mental diseases is presented by leading researchers working actively in the field in question.

Author: Brian D. Gulbransen
Publisher: Biota Publishing
ISBN: 1615046615
Category : Medical
Languages : en
Pages : 72

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Book Description
The enteric nervous system (ENS) is a complex neural network embedded in the gut wall that orchestrates the reflex behaviors of the intestine. The ENS is often referred to as the “little brain” in the gut because the ENS is more similar in size, complexity and autonomy to the central nervous system (CNS) than other components of the autonomic nervous system. Like the brain, the ENS is composed of neurons that are surrounded by glial cells. Enteric glia are a unique type of peripheral glia that are similar to astrocytes of the CNS. Yet enteric glial cells also differ from astrocytes in many important ways. The roles of enteric glial cell populations in the gut are beginning to come to light and recent evidence implicates enteric glia in almost every aspect of gastrointestinal physiology and pathophysiology. However, elucidating the exact mechanisms by which enteric glia influence gastrointestinal physiology and identifying how those roles are altered during gastrointestinal pathophysiology remain areas of intense research. The purpose of this e-book is to provide an introduction to enteric glial cells and to act as a resource for ongoing studies on this fascinating population of glia. Table of Contents: Introduction / A Historical Perspective on Enteric Glia / Enteric Glia: The Astroglia of the Gut / Molecular Composition of Enteric Glia / Development of Enteric Glia / Functional Roles of Enteric Glia / Enteric Glia and Disease Processes in the Gut / Concluding Remarks / References / Author Biography

Author: L. Hertz
Publisher: Elsevier Science
ISBN: 9780444514516
Category : Science
Languages : en
Pages : 1300

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Book Description
The brain, and the rest of the nervous system, consists of nerve cells (neurons) and non-neuronal cells (glial cells), which by far outnumber the neurons, but in the past have received much less attention. This began to change about 30 years ago with the realization that glial cells carry out very important functions, generally in collaboration with the nerve cells. Evidence is now starting to accumulate that glial cells, especially astrocytes and microglia, may be major (in some cases the main) players in a multitude of neurological and mental diseases, and that different types of glial cells interact not only with nerve cells but also with each other and with cells lining brain tissue and controlling exchange of nutrients and other compounds between the brain and the rest of the body. Understanding of these interactions during normal function and in disease states is hampered by the fact that general knowledge of cellular interactions during brain function is limited. These books present an attempt to remedy this situation. In the first two volumes, basic information about cell types and biochemical and physiological interactions between these cells is provided by leading experts in the field, and in the last part emerging evidence of the importance of such cellular interactions in several of the most important neurological and mental diseases is presented by leading researchers working actively in the field in question.

Author: Sukriti Nag
Publisher: Humana Press
ISBN: 9781607619376
Category : Medical
Languages : en
Pages : 0

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Book Description
Evolving technologies starting with tracer studies, and more recently with genomics and proteomics, have provided novel information about the molecular properties of cerebral endothelium and astrocytes; however, further studies must be done in animal models of neurological diseases and in humans to get a clearer understanding of the pathogenesis of blood-brain barrier (BBB) breakdown in nervous system diseases. In The Blood-Brain and Other Neural Barriers: Reviews and Protocols, experts in the field present a series of cutting-edge protocols which can be used to study the barriers. Opening with detailed information on components of the neurovascular unit as well as the blood-cerebrospinal, blood-retinal, and blood-nerve barriers, the book continues with meticulous techniques to image the barriers in humans and experimental animals, followed by cutting-edge molecular techniques to study the BBB and novel models to study the barriers, and it concludes with techniques for the delivery of therapeutic agents across the BBB. Written in the highly successful Methods in Molecular BiologyTM series format, protocol chapters include introductions to their respective topics, lists of the necessary materials, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Authoritative and up-to-date, The Blood-Brain and Other Neural Barriers: Reviews and Protocols will aid the research efforts of not only graduate students but also more experienced investigators and support future studies of these vital systems.

Author: Vladimir Parpura
Publisher: Springer Science & Business Media
ISBN: 0387794921
Category : Medical
Languages : en
Pages : 701

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Book Description
Astrocytes were the original neuroglia that Ramón y Cajal visualized in 1913 using a gold sublimate stain. This stain targeted intermediate filaments that we now know consist mainly of glial fibrillary acidic protein, a protein used today as an astrocytic marker. Cajal described the morphological diversity of these cells with some ast- cytes surrounding neurons, while the others are intimately associated with vasculature. We start the book by discussing the heterogeneity of astrocytes using contemporary tools and by calling into question the assumption by classical neuroscience that neurons and glia are derived from distinct pools of progenitor cells. Astrocytes have long been neglected as active participants in intercellular communication and information processing in the central nervous system, in part due to their lack of electrical excitability. The follow up chapters review the “nuts and bolts” of ast- cytic physiology; astrocytes possess a diverse assortment of ion channels, neu- transmitter receptors, and transport mechanisms that enable the astrocytes to respond to many of the same signals that act on neurons. Since astrocytes can detect chemical transmitters that are released from neurons and can release their own extracellular signals there is an increasing awareness that they play physiological roles in regulating neuronal activity and synaptic transmission. In addition to these physiological roles, it is becoming increasingly recognized that astrocytes play critical roles during pathophysiological states of the nervous system; these states include gliomas, Alexander disease, and epilepsy to mention a few.

Author: Behrang Sharif
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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"How is it possible to feel different sensations from the same area on the skin? Althoughvery basic, there are still fundamental questions like this, that remain to be answered on thetopic of sensory perception. One of the more prominent theories on how the nervous systemsolves the sensory discrimination dilemma is the "labeled line" or "specificity" theory whichclaims dedicated compartments of the system, e.g. marked peripheral afferent subpopulations, are responsible for specific sensory modalities. If proven accurate, this model inspires"compartmentalized therapy" which aims to alleviate sensory diseases through targetingspecific elements responsible for individual modalities, like pain or itch. In contrast, if multiplemodalities share similar elements of the sensory system, compartmentally targeting suchflexible system can lead to compensatory modulation of other compartments leading toinefficacy of the therapeutic approach. Although the debate on specificity versus multimodalityis ongoing in the field of sensory biology, in the recent years, absence of evidence formultimodality in certain specific genetic and behavioral studies has been interpreted asevidence of absence. Here, I will propose that the failure to detect evidence of multiplecompartments' contribution to diverse modalities is due to overlooked technical limitations. Limitation of common approaches such as animal sensory behavioral assays, optogenetics, chemogenetics, and single time point snapshot transcriptomic tools such as single cell RNAsequencing may have led us to believe that compartments not tuned for a specific modality aredispensable for that sensation. In this dissertation, with the aim to iterate the need for wholesome approaches in sensorybiology, I will bring convincing evidence for functional dynamism and genetic heterogeneity inthe peripheral primary sensory system. In the first data chapter (Chapter 2) I will focus onmultimodal capacity of a subset of primary afferents to prove a single population of neuronscan contribute to transmission of different senses, itch and pain. I will also introduce molecularplayers that are involved in modulation of the signals in a modality specific manner, i.e.engagement of TRP channels in itch but not pain transmission through MRGPRA3 expressingafferents. In the second data chapter (Chapter 3), with multimodality in mind, I will provideelements of a single-cell transcriptomic atlas of human primary sensory ganglia. Takingadvantage of single-nucleus RNA and ATAC sequencing, I lay down how multiple functionalpathways are expressed in single neuronal populations of human dorsal root ganglia. Asimportant contributors to sensory coding in health and disease, information of thetranscriptomic and genomic repertoire of non-neuronal ganglia resident cells will also beincluded in this chapter. I trust that this dissertation will highlight the necessity of recognizing technical pitfalls insensory research, particularly pain related studies. I also hope to assert the importance ofmultimodality and to build a solid base for more wholesome research that can lead to a betterunderstanding of sensory discrimination mechanisms"--

Author: Oussama Abla
Publisher: Springer
ISBN: 3319596322
Category : Medical
Languages : en
Pages : 391

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This volume provides a comprehensive and world-class review of the field of histiocytic neoplasms and hemophagocytic lymphohistiocytosis (HLH). It reviews all the advances in the field of histiocytoses during the last ten years, particularly with regards to the genomic findings in LCH and other histiocytic neoplasms and the new suggested classification of the histiocytic disorders. Additionally, it features a state-of-the art update on the most recent treatment strategies for LCH, including the results of the last LCH-III international trial, salvage therapies such as reduced-intensity conditioning (RIC) stem cell transplant (SCT), and targeted therapies with BRAF and MEK inhibitors, as well as the challenging cases of CNS-neurodegenerative LCH and its therapeutic perspectives. For primary and secondary HLH the book updates the most recent genetic and pathophysiological findings, including macrophage-activation syndrome (MAS), and includes a special chapter on HLH in adults. Treatment chapters encompass therapy for newly diagnosed HLH and refractory disease as well as stem-cell transplantation and novel therapies. The text also highlights the most recent advances in the treatment of the uncommon histiocytic disorders, such as Erdheim-Chester disease (ECD), Juvenile xanthogranuloma (JXG) and JXG-like conditions, Rosai-Dorfman disease (RDD), and the very rare malignant histiocytoses. Written by international experts in the field, Histiocytic Disorders is a valuable resource for clinicians, researchers, fellows and residents who are interested in or manage histiocytic disorders in children and adults.