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Author: LinFang Wang Publisher: Biota Publishing ISBN: 1615047980 Category : Science Languages : en Pages : 56
Book Description
Glia, the non-neuronal cells in the nervous systems, are both passive and active participants in diverse arrays of neuronal function. The diversity of glial cells in various animal species appears to be correlated with the complexity of brains. In the animal Drosophila melanogaster, glia are similarly categorized to their mammalian counterparts in morphology and function. Surface glia cover the outermost surface of the brain and function as a blood-brain-barrier to protect the nervous system. Cortex glia, similar to mammalian astrocytes, enwrap around the neuronal cell bodies and provide trophic support. Neuropil glia, similar to mammalian astrocytes and oligodendrocytes, are closely associated with the synapse-enriched neuropils and regulate synapse formation, synaptic function, and underlie the mechanism of circuit and behavior. This short monograph focuses on Drosophila glia, discusses the classification of different glial subtypes and their developmental origins, and provides an overview of different glial-mediated activity crucial for the development and function of the nervous system. This context serves as a general introduction to the molecular and cellular basis of glial function in normal and pathological brains.
Author: LinFang Wang Publisher: Biota Publishing ISBN: 1615047980 Category : Science Languages : en Pages : 56
Book Description
Glia, the non-neuronal cells in the nervous systems, are both passive and active participants in diverse arrays of neuronal function. The diversity of glial cells in various animal species appears to be correlated with the complexity of brains. In the animal Drosophila melanogaster, glia are similarly categorized to their mammalian counterparts in morphology and function. Surface glia cover the outermost surface of the brain and function as a blood-brain-barrier to protect the nervous system. Cortex glia, similar to mammalian astrocytes, enwrap around the neuronal cell bodies and provide trophic support. Neuropil glia, similar to mammalian astrocytes and oligodendrocytes, are closely associated with the synapse-enriched neuropils and regulate synapse formation, synaptic function, and underlie the mechanism of circuit and behavior. This short monograph focuses on Drosophila glia, discusses the classification of different glial subtypes and their developmental origins, and provides an overview of different glial-mediated activity crucial for the development and function of the nervous system. This context serves as a general introduction to the molecular and cellular basis of glial function in normal and pathological brains.
Author: Ben Barres Publisher: Cold Spring Harbor Perspective ISBN: 9781621820277 Category : Medical Languages : en Pages : 0
Book Description
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.
Author: Gerhard Martin Technau Publisher: Springer Science & Business Media ISBN: 0387782613 Category : Medical Languages : en Pages : 173
Book Description
The fruitfly Drosophila melanogaster is an ideal model system to study processes of the central nervous system This book provides an overview of some major facets of recent research on Drosophila brain development.
Author: Ivan J. Santiago Publisher: ISBN: Category : Languages : en Pages : 82
Book Description
Proper development, function and maintenance of the central nervous system (CNS) are reliant on the intricate relationship between glia and neurons. Glia cells possess a variety of key functions such as maintaining homeostasis, providing neurons with trophic support and the uptake and recycling of neuronal debris. Disruptions in glial function have been implicated in neurological disorders. Despite their obvious importance in the CNS, glia cells remain much less characterized than their neuronal counterparts. With its wide array of genetic tools and its low glia-to-neuron ratio, Drosophila melanogaster presents itself as a useful model organism in studies of glial characterization. Rap/Fzr, an activator of the Anaphase Promoting Complex/Cyclosome (APC/C), a E3 ubiquitin ligase, is the Drosophila homolog of the mammalian Cdh1. Previous studies have shown that proper function of the APC/C regulates glial differentiation in the CNS (Kaplow et al., 2008). Our studies show that targeted pan-glial expression of Rap/Fzr/Cdh1 results in the reduction of glia number in the CNS of 3rd instar larvae. Adult Drosophila with reduced number of glia cells exhibit progressive age-dependent phenotypes such as temperature-sensitive paralysis and vacuolization of the brain, as well as significant lifespan reduction. Employing glia subtype specific GAL4 drivers, we have identified astrocyte-like glia as a critical cell type in neuroprotection. Targeted expression of Rap/Fzr to astrocyte-like glia results in temperature-sensitive paralysis and lifespan reduction. These neurodegenerative phenotypes suggest a vital role for astrocyte-like glia in neuroprotection.
Author: Rebecca Matsas Publisher: Springer Science & Business Media ISBN: 1461546850 Category : Medical Languages : en Pages : 376
Book Description
Thirty-five years ago, when Stephen Kuffler and his colleagues at Harvard initiated a new era of research on the properties and functions of neuroglial cells, very few neuro scientists were impressed at the time with the hypothesis that neuroglial cells could have another, though more subtle, role to play in the nervous system than to provide static support to neurons. Today, very few neuroscientists are unaware of the fact that multiple interactions between neurons and glial cells have been described, and that they consti tute the basis for understanding the function and the pathology of the nervous system. Glial cells outnumber neurons and make up about one-half of the bulk of the nervous system. They are divided into two major classes: first, the macroglia, which include astrocytes and oligodendrocytes in the central nervous system, and the Schwann cells in the peripheral nervous system; and second, the microglial cells. These different classes of glial cells have different functions and contribute in different ways in the devel opment, function, and the pathology of the nervous system.
Author: Antonia Vernadakis Publisher: Springer Science & Business Media ISBN: 1592594670 Category : Medical Languages : en Pages : 285
Book Description
Leading international authorities report on their in vivo studies of neuron glia interactions in animals with simple nervous systems (insects, fish, amphibians, and reptiles). Their work amounts to an in-depth account of many of the principal functions of glial cells: myelination, regulation of ionic environment, neurotransmitter compartmentation and neurotransmitter receptors, blood brain barrier, regeneration, and aging. Part I examines the origin and role of glial cells during development across the phylogenetic spectrum, including the evolution of their particular functions. Part II discusses the physiological and metabolic interactions between neurons and glia, again across phylogenetic groups. Neuron Glia Interrelations During Phylogeny illuminates the evolution of the nervous system and expands our knowledge of the mechanisms involved in regeneration and central nervous system repair. It constitutes a virtual encyclopedia of up-to-date findings concerning the significant roles played by glial cells in neuronal development and function.
Author: Arun Kumar Publisher: ISBN: Category : Languages : en Pages : 0
Book Description
The functionality of the complex neural network depends on the interactions between neurons and glia. While many efforts have been made to understand the neuron-neuron interactions, less is known about those amongst glial cells. Due to the complexity of the vertebrate nervous system, which comprises manifold more glia than neurons, it is hard to tackle the role of glia-glia interactions. The nervous system of Drosophila, however, has a lower glia-neuron ratio, which makes this simple animal an ideal model. I use genetic approaches at cellular resolution to dissect the cellular and molecular mechanisms of glial collective migration in vivo. In Sum, I have shown some basic mechanism controlling collective cell migration: 1) cells at the front of the collective interact with each other through anterograde and retrograde bidirectional interaction. 2) N-cad appears necessary for timely movement of glial community.
Author: Ishan Patro Publisher: Springer Nature ISBN: 9811683131 Category : Medical Languages : en Pages : 763
Book Description
This book reviews the role of glial cells (astrocytes, microglia, oligodendroglia, satellite cells, and Schwann cells) in neuronal health and diseases. It discusses the latest advances in understanding their origin, differentiation, and hemostasis. The book also examines the role of microglial cells in central nervous system (CNS) development, maintenance, and synaptic plasticity. Further, the book presents the functions of astrocytes in healthy CNS and their critical role in CNS disorders, including Parkinson's and Alzheimer's diseases. Notably, the book describes the pathobiology, molecular pathogenesis, stem cells, and imaging characteristics of gliomas. It defines the role of glial cells in regulating iron homeostasis and their effect on the neurodegeneration of neurons. Lastly, it covers the structure, function, and pathology of oligodendrocytes and their role in neuronal health and disease.
Author: LinFang Wang
Author: LinFang Wang
Author: Ben Barres
Author: Gerhard Martin Technau
Author: Ivan J. Santiago
Author: Rebecca Matsas
Author: Antonia Vernadakis
Author: Antonia Vernadakis
Author: Josh Dubnau
Author: Arun Kumar
Author: Ishan Patro