Download or read book Never resting microglia physiological roles in the healthy brain and pathological implications written by Amanda Sierra and published by Frontiers E-books. This book was released on 2015-02-11 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microglia are largely known as the major orchestrators of the brain inflammatory response. As such, they have been traditionally studied in various contexts of disease, where their activation has been assumed to induce a wide range of detrimental effects. In the last few years, a series of discoveries have challenged the current view of microglia, showing their active and positive contribution to normal brain function. This Research Topic reviewed the novel physiological roles of microglia in the developing, mature and aging brain, under non-pathological conditions. In particular, this Research Topic discussed the cellular and molecular mechanisms by which microglia contribute to the formation, pruning and plasticity of synapses; the regulation of adult neurogenesis as well as hippocampal learning and memory; among other important roles. Because these novel findings defy our understanding of microglial function in health as much as in disease, this Research Topic also summarized the current view of microglial nomenclature, phenotypes, origin and differentiation, and contribution to various brain pathologies. Additionally, novel imaging approaches and molecular tools to study microglia in their non-activated state have been discussed. In conclusion, this Research Topic seeked to emphasize how the current research in neuroscience is challenged by never-resting microglia.

Download or read book The Fractal Geometry of the Brain written by Antonio Di Ieva and published by Springer. This book was released on 2016-08-03 with total page 583 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reviews the most intriguing applications of fractal analysis in neuroscience with a focus on current and future potential, limits, advantages, and disadvantages. Will bring an understanding of fractals to clinicians and researchers also if they do not have a mathematical background, and will serve as a good tool for teaching the translational applications of computational models to students and scholars of different disciplines. This comprehensive collection is organized in four parts: (1) Basics of fractal analysis; (2) Applications of fractals to the basic neurosciences; (3) Applications of fractals to the clinical neurosciences; (4) Analysis software, modeling and methodology.

Download or read book Neurobiological and Psychological Aspects of Brain Recovery written by Laura Petrosini and published by Springer Nature. This book was released on 2023-06-06 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: The importance of this unique book's approach lies in addressing the impact of neurobiological factors as well as psychological influences on brain recovery following injury. There is growing evidence that emotional, motivational, and cognitive factors along with personality traits play a crucial role in brain plasticity, resilience, and recovery. Topics include synaptic and neuronal plasticity, development of brain reserves, biological markers, environmental factors, emotional resilience, and personality traits. By combining the latest research on neural mechanisms and psychological resilience the authors present a book that will help lead to the development of better treatment strategies for functional recovery from brain damage. The new edition is fully updated throughout and contains completely new chapters on brain recovery in childhood, epigenetic aspects of brain recovery, and artificial intelligence techniques in traumatic brain injury research.

Download or read book Glial Plasticity in Depression written by João F. Oliveira and published by Frontiers Media SA. This book was released on 2016-10-24 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt: Major depression is a highly prevalent disorder that poses a significant social burden in society nowadays. The pathophysiology of this disease is still poorly understood but growing evidence suggests that impaired neuron and glial plasticity may be a key underlying mechanism for the precipitation of the disorder. One of the most surprising findings in this field was the involvement of glial cells in the pathophysiology of major depression and in the action of antidepressants, namely in mechanisms related with adult neurogenesis imbalances or dendritic arborization impairments. In particular, several works refer to alterations in the morphology and numbers of astrocytes, microglia and oligodendrocytes in the context of depression in human patients or animal models of depression. These observations were linked to functional evidences and suggested to underlie the pathophysiology of depression. Among others, these include impairments in the cross-talk between glia and neurons, changes in the level of neurotransmitter or immunoactive substances, myelination status, synapse formation, maintenance, or elimination. In addition to the implication of glia in the pathophysiology of depression, a number of studies is ascribing glia pathways to classically accepted antidepressant mechanisms. Therefore, it is noteworthy to elucidate the role of glia in the effect provided by antidepressant treatment in order to better understand secondary effects and elucidate alternative targets for treatment.

Download or read book The Functional Anatomy of the Reticular Formation written by Ugo Faraguna and published by Frontiers Media SA. This book was released on 2019-10-04 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: The brainstem reticular formation is the archaic core of ascending and descending pathways connecting the brain with spinal cord. After the pioneer description of the activating role of the ascending reticular activating system by Moruzzi and Magoun in 1949, an increasing number of studies have contributed to disclose the multifaceted roles of this brain area. In fact, the brainstem reticular formation sub-serves a variety of brain activities such as the modulation of the sleep-waking cycle, the level of arousal and attention, the drive for novelty seeking behaviors and mood. Meanwhile, descending pathways play a key role in posture modulation, extrapyramidal movements, and autonomic functions such as breathing and blood pressure. Moreover, both descending and ascending fibers of the reticular formation are critical in gating the sensory inputs and play a critical role in pain modulation and gaze control. All these activities are impaired when a damage affects critical nuclei of the reticular formation. Remarkably, in neurodegenerative diseases involving reticular nuclei, the rich collaterals interconnecting reticular isodendritic neurons represent a gateway for disease spreading placing the role of the reticular nuclei as a pivot in a variety of brain disorders. The present Research Topic is an updated collection of recent studies, which contribute to define the systematic anatomy of the reticular formation, its physiological and pharmacological features, as well as its involvement in neurodegenerative disorders and neuroprotection.

Download or read book Frontiers in Synaptic Plasticity Dendritic Spines Circuitries and Behavior written by Alberto A. Rasia-Filho and published by Frontiers Media SA. This book was released on 2016-09-22 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: The term “synaptic plasticity” is a broad concept, which is studied with a variety of experimental approaches. One focus is the impact of changes in synaptic, neuronal and glial morphology on brain circuitry and behavior. In this regard, unique animal models have been key to the study of affective and social behaviors and neurological and psychiatric diseases. However, there is a paucity of compilations directed toward the correlation of alterations in synaptic structure with various physiological and behavioral paradigms. This Frontiers Research Topic will, therefore, serve as an exciting forum for the exchange of novel hypotheses and data and an important resource and reference for investigators studying synaptic and brain plasticity, as well as those in related fields.

Download or read book Wiring the Nervous System Mechanisms of Axonal and Dendritic Remodelling in Health and Disease written by Tracy S. Tran and published by CRC Press. This book was released on 2024-01-31 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines recent key findings on the mechanisms of axonal and dendritic remodeling in different model organisms. Each chapter is contributed by a panel of experts in their respective subfields of neurosciences, to provide and discuss the latest discoveries ranging from neuronal morphogenesis during development, experience-dependent structural plasticity, to neuronal degeneration, regeneration, and pathologies in neurological disorders. The process of neuronal remodeling, specifically their axons and dendrites, is essential for the proper wiring of the nervous system during early development and continues during postnatal ages to shape the pattern of synaptic connections throughout the life of the organism, including humans. Over recent years, substantial progress has been made in our understanding of the cellular and molecular mechanisms that control neuronal remodeling. In addition, there is accumulating evidence demonstrating how the nervous system could remodel in response to injury and in pathological conditions. Topics discussed in the book include: Axonal degeneration during development and in pathological or disease conditions Neuronal morphogenesis (axons and dendrites) Experience-dependent structural plasticity to synaptogenesis Dendrite degeneration and regeneration

Download or read book New Insights Into Schizophrenia Related Neural and Behavioral Phenotypes written by Yuh-Man Sun and published by Frontiers Media SA. This book was released on 2023-06-01 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Synaptic Loss and Neurodegeneration written by Marie-Ève Tremblay and published by Frontiers Media SA. This book was released on 2021-06-16 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Microglia in Health and Disease written by Marie-Ève Tremblay and published by . This book was released on 2014-10-31 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Purinergic Signalling in Neuron Glia Interactions written by Derek J. Chadwick and published by John Wiley & Sons. This book was released on 2006-05-01 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: ATP, the intracellular energy source, is also an extremely important cell–cell signalling molecule for a wide variety of cells across evolutionarily diverse organisms. The extracellular biochemistry of ATP and its derivatives is complex, and the multiple membrane receptors that it activates are linked to many intracellular signalling systems. Purinergic signalling affects a diverse range of cellular phenomena, including ion channel function, cytoskeletal dynamics, gene expression, secretion, cell proliferation, differentiation and cell death. Recently, this class of signalling molecules and receptors has been found to mediate communication between neurons and non-neuronal cells (glia) in the central and peripheral nervous systems. Glia are critical for normal brain function, development and response to injury. Neural impulse activity is detected by glia and purinergic signalling is emerging as a major means of integrating functional activity between neurons, glia and vascular cells in the nervous system. These interactions mediate effects of neural activity on the development of the nervous system and in association with injury, neurodegeneration, myelination and cancer. Bringing together contributions from experts in diverse fields, including glial biologists, neurobiologists and specialists in purinergic receptor structure and pharmacology, this book considers how extracellular ATP acts to integrate communication between different types of glia, and between neurons and glia. Beginning with an overview of glia and purinergic signalling, it contains detailed coverage of purine release, receptors and reagents, purinergic signalling in the neural control of glial development, glial involvement in information processing, and discussion of the interactions between neurons and microglia.

Download or read book The Major Discoveries of Cajal and His Disciples Consolidated Milestones for the Neuroscience of the XXIst Century written by Fernando de Castro and published by Frontiers Media SA. This book was released on 2017-04-25 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt: When Santiago Ramón y Cajal started to unravel the fine structure of the nervous system in the last decades of the XIXth century maybe only his unbeatable soul of brave Spaniard imagined that most of the descriptions were scientific truths that lasted to date. Simple histological stainings, curiosity to ameliorate these, monocular microscopes, patience for drawing his observations and a rich imaginative open mind: this is the recipy for Cajal success. His descriptions of connectivity in the nervous system, compiled in Cajal's opus magna published in 1904 ("Textura del sistema nervioso del hombre y los vertebrados") and 1911 ("Histologie du systeme nerveux"), have been corroborated by modern techniques decade after decade. Even more, the main hypothesis that Cajal raised are universally recognised as biological laws, today: the neuron theory, the law on the dynamic polarization of the neuron and the chemotropic hypothesis. That is: the nervous system is not a sincitial network but is formed by individual cells; the transmission of the nerve impulses follow a main direction within a given neuron; the axons are guided by chemical substances in a chemotropic way, till form synapses with their targets. Attracted by Cajal's strong personality and scientific success, a number of medical students and doctors join him in the crusade to explore the nervous system. And the seed planted by the universal savant was really successful: Francisco Tello described interesting aspects of the regeneration of peripheral nerves which are very useful for neuroscientist currently working in this topic; Nicolás Achúcarro significantly contributed to study neuroglia and future microglia; Pío del Río-Hortega identified two out of the four main nervous cell types, the oligodendrocytes and microglia, and proposed an almost still valid classification for the CNS tumours; Fernando de Castro made was the first description of arterial chemoreceptors in the carotid body; Rafael Lorente de Nó was a dominant figure of Neuroscience for decades after the IInd World War, first describing the columnar organization of the cerebral cortex well before Mountcastle, Hubbel and Wiesel. Even less recognised co-workers and disciples of Cajal (his brother Pedro Ramón y Cajal, Domingo Sánchez, the neurologist Rodríguez-Lafora... protagonised discoveries that are consolidated scientific truths today). Altogether, it is difficult (if not impossible) to find a school in biology contributing in such a fundamental and variated way to the common acervo like the collectively known as Cajal School or Spanish Neurological School. Although the particular way to work of the Maestro, selecting a pleiade of brilliant collaborators with whom accomplish such a titanic feat, giving them freedom for their studies, has been recognised and confronted to antagonic systems followed by other relevant scientists and scientific schools, the general recognition of such a significant major milestones for Neuroscience and their vigency in the well-marched XXIst century is not: this is the purpose of this Ebook, to remind all these examples of how successful can be the scientific work when it is minutious, constant and performed by brilliant, imaginative and skilled scientists with a minimal conditions supporting their efforts.

Download or read book Brain Disorders in Critical Illness written by Robert D. Stevens and published by Cambridge University Press. This book was released on 2013-09-19 with total page 457 pages. Available in PDF, EPUB and Kindle. Book excerpt: Brain dysfunction is a major clinical problem in intensive care, with potentially debilitating long-term consequences for post-ICU patients of any age. The resulting extended length of stay in the ICU and post-discharge cognitive dysfunction are now recognized as major healthcare burdens. This comprehensive clinical text provides intensivists and neurologists with a practical review of the pathophysiology of brain dysfunction and a thorough account of the diagnostic and therapeutic options available. Initial sections review the epidemiology, outcomes, relevant behavioral neurology and biological mechanisms of brain dysfunction. Subsequent sections evaluate the available diagnostic options and preventative and therapeutic interventions, with a final section on clinical encephalopathy syndromes encountered in the ICU. Each chapter is rich in illustrations, with an executive summary and a helpful glossary of terms. Brain Disorders in Critical Illness is a seminal reference for all physicians and neuroscientists interested in the care and outcome of severely ill patients.

Download or read book Cytology and Cellular Pathology of the Nervous System written by Wilder Pensfield and published by . This book was released on 1965 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Translational Research in Traumatic Brain Injury written by Daniel Laskowitz and published by CRC Press. This book was released on 2015-12-01 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: Traumatic brain injury (TBI) remains a significant source of death and permanent disability, contributing to nearly one-third of all injury related deaths in the United States and exacting a profound personal and economic toll. Despite the increased resources that have recently been brought to bear to improve our understanding of TBI, the development of new diagnostic and therapeutic approaches has been disappointingly slow. Translational Research in Traumatic Brain Injury attempts to integrate expertise from across specialties to address knowledge gaps in the field of TBI. Its chapters cover a wide scope of TBI research in five broad areas: Epidemiology Pathophysiology Diagnosis Current treatment strategies and sequelae Future therapies Specific topics discussed include the societal impact of TBI in both the civilian and military populations, neurobiology and molecular mechanisms of axonal and neuronal injury, biomarkers of traumatic brain injury and their relationship to pathology, neuroplasticity after TBI, neuroprotective and neurorestorative therapy, advanced neuroimaging of mild TBI, neurocognitive and psychiatric symptoms following mild TBI, sports-related TBI, epilepsy and PTSD following TBI, and more. The book integrates the perspectives of experts across disciplines to assist in the translation of new ideas to clinical practice and ultimately to improve the care of the brain injured patient.