Download or read book Patterning and Cell Type Specification in the Developing CNS and PNS written by and published by Academic Press. This book was released on 2013-05-06 with total page 993 pages. Available in PDF, EPUB and Kindle. Book excerpt: The genetic, molecular, and cellular mechanisms of neural development are essential for understanding evolution and disorders of neural systems. Recent advances in genetic, molecular, and cell biological methods have generated a massive increase in new information, but there is a paucity of comprehensive and up-to-date syntheses, references, and historical perspectives on this important subject. The Comprehensive Developmental Neuroscience series is designed to fill this gap, offering the most thorough coverage of this field on the market today and addressing all aspects of how the nervous system and its components develop. Particular attention is paid to the effects of abnormal development and on new psychiatric/neurological treatments being developed based on our increased understanding of developmental mechanisms. Each volume in the series consists of review style articles that average 15-20pp and feature numerous illustrations and full references. Volume 1 offers 48 high level articles devoted mainly to patterning and cell type specification in the developing central and peripheral nervous systems. Series offers 144 articles for 2904 full color pages addressing ways in which the nervous system and its components develop Features leading experts in various subfields as Section Editors and article Authors All articles peer reviewed by Section Editors to ensure accuracy, thoroughness, and scholarship Volume 1 sections include coverage of mechanisms which: control regional specification, regulate proliferation of neuronal progenitors and control differentiation and survival of specific neuronal subtypes, and controlling development of non-neural cells

Download or read book Microglia in Health and Disease A Unique Immune Cell Population written by Alessandro Michelucci and published by Frontiers Media SA. This book was released on 2018-10-05 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microglia are essential for the development and function of the adult brain. Their ontogeny, together with the absence of turnover from the periphery and the singular environment of the central nervous system (CNS), make microglia a unique cell population compared to other tissue-macrophages. The unique properties and functions of microglial cells, such as their role in synaptic pruning or the exceptional capacity to scan the brain parenchyma and rapidly react to its perturbations, have emerged in recent years. In the coming years, understanding how microglia acquire and maintain their unique profiles in order to fulfil distinct tasks in the healthy CNS and how these are altered in disease, will be essential to develop strategies to diagnose or treat CNS disorders with an immunological component. This Research Topic covers several aspects of microglial biology, ranging from their origin and the functional role of microglia during development and lifespan, their molecular properties compared with other brain and peripheral immune cells to microglial phenotypes and functional states in neurodegenerative diseases and brain tumours. In conclusion, the present Research Topic provides a comprehensive overview of our current understanding of several cellular and molecular mechanisms that make microglia a unique immune cell population within the healthy CNS as well as under inflammatory, neurodegenerative and tumorigenic processes.

Download or read book Dual Role of Microglia in Health and Disease Pushing the Balance Towards Repair written by Raquel Ferreira and published by Frontiers Media SA. This book was released on 2015-07-23 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microglial cells play a vital role in the innate immune response occurring in the Central Nervous System (CNS). Under physiologic conditions, microglia dynamically patrol the brain parenchyma and participate in the remodeling of active neuronal circuits. Accordingly, microglia can boost synaptic plasticity by removing apoptotic cells and by phagocytizing axon terminals and dendritic spines that form inappropriate neural connections. Upon brain and spinal cord injury or infection, microglia act as the first line of immune defense by promoting the clearance of damaged cells or infectious agents and by releasing neurotrophins and/ or proneurogenic factors that support neuronal survival and regeneration. Recently, two main pathways were suggested for microglia activation upon stimuli. Classical activation is induced by Toll-like receptor agonists and Th1 cytokines and polarizes cells to an M1 state, mainly leading to the release of TNF-alpha, IL-6 and nitric oxide and to grave neural damage. Alternative activation is mediated by Th2 cytokines and polarizes cells to an M2a state inducing the release of antiinflammatory factors. These findings have further fueled the discussion on whether microglia has a detrimental or beneficial action (M1 or M2-associated phenotypes, respectively) in the diseased or injured CNS and, more importantly, on whether we can shift the balance to a positive outcome. Although microglia and macrophages share several common features, upon M1 and M2 polarizing conditions, they are believed to develop distinct phenotypic and functional properties which translate into different patterns of activity. Moreover, microglia/macrophages seem to have developed a tightly organized system of maintenance of CNS homeostasis, since cells found in different structures have different morphology and specific function (e.g. meningeal macrophages, perivascular macrophages, choroid plexus macrophages). Nevertheless, though substantial work has been devoted to microglia function, consensus around their exact origin, their role during development, as well as the exact nature of their interaction with other cells of the CNS has not been met. This issue discusses how microglial cells sustain neuronal activity and plasticity in the healthy CNS as well as the cellular and molecular mechanisms developed by microglia in response to injury and disease. Understanding the mechanisms involved in microglia actions will enforce the development of new strategies to promote an efficient CNS repair by committing microglia towards neuronal survival and regeneration.

Download or read book Basic Neurochemistry written by R. Wayne Albers and published by Academic Press. This book was released on 2011-11-02 with total page 1121 pages. Available in PDF, EPUB and Kindle. Book excerpt: Basic Neurochemistry, Eighth Edition, is the updated version of the outstanding and comprehensive classic text on neurochemistry. For more than forty years, this text has been the worldwide standard for information on the biochemistry of the nervous system, serving as a resource for postgraduate trainees and teachers in neurology, psychiatry, and basic neuroscience, as well as for medical, graduate, and postgraduate students and instructors in the neurosciences. The text has evolved, as intended, with the science. This new edition continues to cover the basics of neurochemistry as in the earlier editions, along with expanded and additional coverage of new research from intracellular trafficking, stem cells, adult neurogenesis, regeneration, and lipid messengers. It contains expanded coverage of all major neurodegenerative and psychiatric disorders, including the neurochemistry of addiction, pain, and hearing and balance; the neurobiology of learning and memory; sleep; myelin structure, development, and disease; autism; and neuroimmunology. Completely updated text with new authors and material, and many entirely new chapters Over 400 fully revised figures in splendid color 61 chapters covering the range of cellular, molecular and medical neuroscience Translational science boxes emphasizing the connections between basic and clinical neuroscience Companion website at http://elsevierdirect.com/companions/9780123749475

Download or read book Developments in Tryptophan and Serotonin Metabolism written by Graziella Allegri and published by Springer Science & Business Media. This book was released on 2004-01-15 with total page 810 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of the Tenth International Meeting of the International Study Group for Tryptophan Research (ISTR V), held at the University of Padova, Padova, Italy, from 25-29 June, 2002 under the auspices of the Ministry of Education, University and Research (MIUR) in Roma, the University of Padova, the Italian Chemical Society - Division of Pharmaceutical Chemistry, the Veneto Region and the City of Padova. The meeting was organized to cover the recent developments in the field of tryptophan research. Weare very honoured that so many speakers accepted our invitation to give plenary lectures which, with the other communications, demonstrated the high scientific value of the Meeting. The publications in this volume are subdivided into nine main chapters, and cover all the major aspects in immunology, neurobiology, psychiatry, pathology, clinics, metabolism, enzymology, pharmacology, toxicology, melatonin, exercise and analytical chemistry. The volume includes the contributions of 325 scientists from 24 countries, and the Musajo Memorial Lecture delivered by Prof. Osamu Hayaishi during the Opening Ceremony.

Download or read book The Role and Origin of Microglia in Retinal Neurodegenerative Disorders written by Bo Peng and published by . This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "The Role and Origin of Microglia in Retinal Neurodegenerative Disorders" by Bo, Peng, 彭勃, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Microglia are the mononuclear phagocytes in the central nervous system (CNS), which constitute the first defense line of the innate immune system. In neurodegenerative disorders, microglia react rapidly and exert protective roles by scavenging pathogens and cell debris. However, the over-activated microglia in chronic neurodegenerative disorders produce pro-inflammatory cytokines and exacerbate neuronal loss. Thus, a dual role of microglia complicates the microglial contribution to neurodegeneration. In the present studies, we investigated the role of microglia in retinal neurodegenerative disorders. We first studied the role of microglial activation in retinitis pigmentosa (RP), an inherited photoreceptor-degenerative disease. In some RP patients, rod-specific genetic mutations lead to rod degeneration followed by cone death. It has been previously shown that microglia respond to pathological disruptions and become activated in RP. However, the role of microglial activation in RP remains elusive. In this study, we investigated the contribution of microglial activation to photoreceptor degeneration in the rd10 mouse model of RP. First, we found microglial activation was an early event prior to photoreceptor death in RP retinas. Pharmacological suppression of microglial activation by minocycline ameliorated photoreceptor degeneration preserved photoreceptor structure and improved retinal function and visual behavior in the rd10 mouse. Second, we determined that the neuroprotective effects of minocycline were exerted via both anti-inflammatory and anti-apoptotic mechanisms. Third, we found that Cx3cr1 deficiency enhanced microglial neurotoxicity and subsequently accelerated photoreceptor loss in rd10 mice, suggesting that the fractalkine/Cx3cr1 signaling pathway might protect microglial from activation. Collectively, we concluded that suppression of microglial activation could be a potential therapeutic approach to the treatment of human RP. Microglia respond to neural insults by rapidly changing their phenotype and contributing to inflammation. However, the origin of activated microglia in the CNS is hotly debated. In the other study, we investigated the origin of activated microglia in the optic nerve transection (ONT) model. The ONT induces the retrograde degeneration of retinal ganglion cells (RGCs). In response to RGC degeneration, retinal microglia were activated and exhibited a rod microglia phenotype, which displayed sausage-shaped cell bodies and slender processes and aligned parallelly with the axon bundles of RGCs. We first characterized temporal and spatial appearances of rod microglia in the ONT model. We found that rod microglia were capable of phagocytosing RGC debris. Moreover, we found that retinal resident microglia rather than bone-marrow-derived precursors were the major contributor to microgliosis. Collectively, this study sheds light on the function and origin of activated microglia in neurodegeneration, which may facilitate therapeutic interventions aiming at restraining the neuroinflammation in neurodegenerative disorders. Subjects: Retinitis pigmentosa Retinal degeneration Microglia

Download or read book Brain Neurotrauma written by Firas H. Kobeissy and published by CRC Press. This book was released on 2015-02-25 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the contribution from more than one hundred CNS neurotrauma experts, this book provides a comprehensive and up-to-date account on the latest developments in the area of neurotrauma including biomarker studies, experimental models, diagnostic methods, and neurotherapeutic intervention strategies in brain injury research. It discusses neurotrauma mechanisms, biomarker discovery, and neurocognitive and neurobehavioral deficits. Also included are medical interventions and recent neurotherapeutics used in the area of brain injury that have been translated to the area of rehabilitation research. In addition, a section is devoted to models of milder CNS injury, including sports injuries.

Download or read book The Role and Origin of Microglia in Retinal Neurodegenerative Disorders written by 彭勃 and published by . This book was released on 2015 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Microglia written by Olga Garaschuk and published by Humana. This book was released on 2020-08-14 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive toolkit of versatile techniques for studying microglia under different experimental settings along with a brief summary of knowledge, accumulated in microglial research over the last decades. Beginning with recently discovered roles of microglia in health and disease, the volume continues by covering in vitro analyses of microglia, in vivo studies, and “omics” analyses. Written for the highly successful Methods in Molecular Biology series, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Authoritative and cutting-edge, Microglia: Methods and Protocols serves as a vital guide to these important cells and an inspiration for scientists interested in expanding our knowledge of their role in the nervous system.

Download or read book The Angel and the Assassin written by Donna Jackson Nakazawa and published by Ballantine Books. This book was released on 2021-01-19 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: A thrilling story of scientific detective work and medical potential that illuminates the newly understood role of microglia—an elusive type of brain cell that is vitally relevant to our everyday lives. “The rarest of books: a combination of page-turning discovery and remarkably readable science journalism.”—Mark Hyman, MD, #1 New York Times bestselling author of Food: What the Heck Should I Eat? NAMED ONE OF THE BEST BOOKS OF THE YEAR BY WIRED Until recently, microglia were thought to be helpful but rather boring: housekeeper cells in the brain. But a recent groundbreaking discovery has revealed that they connect our physical and mental health in surprising ways. When triggered—and anything that stirs up the immune system in the body can activate microglia, including chronic stressors, trauma, and viral infections—they can contribute to memory problems, anxiety, depression, and Alzheimer’s. Under the right circumstances, however, microglia can be coaxed back into being angelic healers, able to make brain repairs in ways that help alleviate symptoms and hold the promise to one day prevent disease. With the compassion born of her own experience, award-winning journalist Donna Jackson Nakazawa illuminates this newly understood science, following practitioners and patients on the front lines of treatments that help to “reboot” microglia. In at least one case, she witnesses a stunning recovery—and in others, significant relief from pressing symptoms, offering new hope to the tens of millions who suffer from mental, cognitive, and physical health issues. Hailed as a “riveting,” “stunning,” and “visionary,” The Angel and the Assassin offers us a radically reconceived picture of human health and promises to change everything we thought we knew about how to heal ourselves.

Download or read book Hematopoietic Stem Cell Development written by Isabelle Godin and published by Springer Science & Business Media. This book was released on 2010-05-27 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book collects articles on the biology of hematopoietic stem cells during embryonic development, reporting on fly, fish, avian and mammalian models. The text invites a comparative overview of hematopoietic stem cell generation in the different classes, emphasizing conserved trends in development. The book reviews current knowledge on human hematopoietic development and discusses recent breakthroughs of relevance to both researchers and clinicians.

Download or read book Glutamate Related Biomarkers in Drug Development for Disorders of the Nervous System written by Institute of Medicine and published by National Academies Press. This book was released on 2011-08-05 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: Glutamate is the most pervasive neurotransmitter in the central nervous system (CNS). Despite this fact, no validated biological markers, or biomarkers, currently exist for measuring glutamate pathology in CNS disorders or injuries. Glutamate dysfunction has been associated with an extensive range of nervous system diseases and disorders. Problems with how the neurotransmitter glutamate functions in the brain have been linked to a wide variety of disorders, including schizophrenia, Alzheimer's, substance abuse, and traumatic brain injury. These conditions are widespread, affecting a large portion of the United States population, and remain difficult to treat. Efforts to understand, treat, and prevent glutamate-related disorders can be aided by the identification of valid biomarkers. The Institute of Medicine's Forum on Neuroscience and Nervous System Disorders held a workshop on June 21-22, 2010, to explore ways to accelerate the development, validation, and implementation of such biomarkers. Glutamate-Related Biomarkers in Drug Development for Disorders of the Nervous System: Workshop Summary investigates promising current and emerging technologies, and outlines strategies to procure resources and tools to advance drug development for associated nervous system disorders. Moreover, this report highlights presentations by expert panelists, and the open panel discussions that occurred during the workshop.

Download or read book Neuroanatomy of the Zebrafish Brain written by Mario F. Wulliman and published by Birkhäuser. This book was released on 2012-12-06 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Glia written by Ben Barres and published by Cold Spring Harbor Perspective. This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The majority of cells in the nervous system are glia. Long thought of as passive bystanders, glial cells are increasingly being appreciated for their active roles in nourishing, supporting, and protecting the neuronal cells that relay electrical signals through the nervous system. Written and edited by experts in the field, this collection from Cold Spring Harbor Perspectives in Biology examines the development of the major classes of glial cells-astrocytes, oligodendrocytes, Schwann cells, and microglia-and their roles in normal physiology and disease. The contributors describe how glia help establish and refine synaptic connections, maintain the metabolic and ionic milieu of nerve cells, myelinate axons, modulate nerve signal propagation, and contribute to the blood-brain barrier. The biological characteristics of glial cells in vertebrate and invertebrate model systems, including those of Drosophila, Caenorhabditis elegans, and zebrafish, are also covered. The authors also discuss the roles of glia in repair and regeneration, as well as in cancer and neurodegenerative diseases (e.g., Alzheimer's). This volume is therefore a valuable reference for all neurobiologists and biomedical scientists wishing to understand these diverse and dynamic cells.

Download or read book Microglia in the Regenerating and Degenerating Central Nervous System written by Wolfgang J. Streit and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of microglial cells has recently gained importance for those researching degeneration and regeneration. Microglia in the regenerating and degenerating CNS supports the assertion that understanding microglial biology could perhaps be pivotal for unraveling the pathogenetic mechanisms that underlie Alzheimer's disease, In addition, microglia are also critical for understanding the sequelae of traumatic brain and spinal cord injury, and for the important post-traumatic repair processes. This book gives an up to date account of the role of microglia in degeneration and regeneration of the nervous system and reviews their cell function and physiology.

Download or read book Introduction to Neuroglia written by Alexei Verkhratsky and published by Biota Publishing. This book was released on 2014-02-01 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the introduction to a series of e-books dedicated to the physiology and pathophysiology of neuroglia. The topic of neuroglia is generally overlooked in neuroscience curricula across the world, the main attention being focused on the description of excitability of neurons and neuronal networks. The neuroglia, being electrically non-excitable, are universally regarded as supportive cells which do not contribute to information processing. This oversimplified view, however, ignores the tremendous importance of brain homeostasis, which is imperative for the ongoing activity of neuronal networks. It also ignores the truth that specialization of neurons and their ability for rapid propagation and multi-level integration of signals become possible only because of delegation of homeostatic abilities to neuroglia. Furthermore, glial cells contribute to information processing as they can modulate neuronal synaptic transmission. Finally, neuroglia provide the only system of brain defense and as such these cells are intimately involved in all types of neuropathologies, and contribute to both neuroprotection and regeneration of the nervous system. The e-books in this series provide a platform for in-depth learning of all aspects of neuroglial cells function in health and disease.

Download or read book Atlas of Histology of the Juvenile Rat written by George A Parker and published by Academic Press. This book was released on 2016-05-04 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atlas of Histology of the Juvenile Rat should be of interest to toxicologic pathologists, toxicologists, and other biological scientists who are interested in the histomorphology of juvenile rats. For several decades the laboratory rat has been used extensively in nonclinical toxicology studies designed to detect potential human toxicity of drugs, agrochemicals, industrial chemicals, and environmental hazards. These studies traditionally have involved young adult rats that are 8-10 weeks of age as studies are started. It is becoming increasingly apparent that children and young animals may have different responses to drug/chemical exposures, therefore, regulatory agencies are emphasizing toxicology studies in juvenile animals. While the histologic features of organs from young adult and aged laboratory rats are well known, less is known about the histologic features of organs from juvenile rats. Final histologic maturity of many organs is achieved postnatally, thus immature histologic features must be distinguished from chemical- or drug-related effects. While this postnatal organ development is known to exist as a general concept, detailed information regarding postnatal histologic development is not readily available. The Atlas includes organs that are typically sampled in nonclinical toxicology studies and presents the histologic features at weekly intervals, starting at birth and extending through postnatal day 42. Written and edited by highly experienced, board-certified toxicologic pathologists Includes more than 700 high-resolution microscopic images from organs that are typically examined in safety assessment toxicology studies Detailed figure legends and chapter narratives present the salient features of each organ at each time interval Figures are available for further study via Elsevier’s Virtual Microscope, which allows viewing of microscopic images at higher magnification Valuable resource for toxicologic pathologists who are confronted with interpretation of lesions in juvenile rats in situations where age-matched concurrent controls are not available for comparison, e.g., with unscheduled decedents Figures are available for further study on ScienceDirect with Virtual Microscope, which allows viewing of microscopic images at higher magnification