Drosophila Glia

Drosophila Glia
Author: LinFang Wang
Publisher: Biota Publishing
Total Pages: 56
Release: 2019-03-18
Genre: Science
ISBN: 1615047980

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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.

Glia

Glia
Author: Ben Barres
Publisher: Cold Spring Harbor Perspective
Total Pages: 0
Release: 2015
Genre: Medical
ISBN: 9781621820277

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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.

Glial Cell Development

Glial Cell Development
Author: Kristjan R. Jessen
Publisher:
Total Pages: 504
Release: 2001
Genre: Medical
ISBN:

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The majority of cells in the nervous system are glial cells. During de velopment, these cells provide growth factors that stimulate the proli feration, migration and survival of neurones and their precursors, and promote and guide axonal growth. In the mature nervous system, glial cells provide insulating myelin sheath around axons and provide metabo lic and structural support for neurones. Glial cells also have a major influence on the local response to injury of central nerve tracts and the peripheral nervous system, either promoting, or inhibiting, axona l regrowth and recovery of lost function. This book provides a compreh ensive, state-of-the-art overview of research into the development, fu nction and malfunction of glial cells. It offers a compelling insight into how basic research throws light onto diseases and disorders and p oints the way towards treatments. Teams of internationally renowned ex perts, all active in research, have contributed chapters.

Neuron-Glia Interrelations During Phylogeny I

Neuron-Glia Interrelations During Phylogeny I
Author: Antonia Vernadakis
Publisher: Springer Science & Business Media
Total Pages: 285
Release: 1995-07-20
Genre: Medical
ISBN: 1592594670

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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.

Brain Development in Drosophila melanogaster

Brain Development in Drosophila melanogaster
Author: Gerhard Martin Technau
Publisher: Springer Science & Business Media
Total Pages: 173
Release: 2009-01-08
Genre: Medical
ISBN: 0387782613

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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.

Glia-mediated Neurodegeneration in the Drosophila Melanogaster CNS

Glia-mediated Neurodegeneration in the Drosophila Melanogaster CNS
Author: Ivan J. Santiago
Publisher:
Total Pages: 82
Release: 2013
Genre:
ISBN:

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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.

The Functional Roles of Glial Cells in Health and Disease

The Functional Roles of Glial Cells in Health and Disease
Author: Rebecca Matsas
Publisher: Springer Science & Business Media
Total Pages: 376
Release: 2012-12-06
Genre: Medical
ISBN: 1461546850

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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.

Neuron—Glia Interrelations During Phylogeny

Neuron—Glia Interrelations During Phylogeny
Author: Antonia Vernadakis
Publisher: Springer Science & Business Media
Total Pages: 526
Release: 1995-07-20
Genre: Medical
ISBN: 1592594689

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Behavioral Genetics of the Fly (Drosophila Melanogaster)

Behavioral Genetics of the Fly (Drosophila Melanogaster)
Author: Josh Dubnau
Publisher: Cambridge University Press
Total Pages: 309
Release: 2014-06-26
Genre: Medical
ISBN: 1107009030

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A comprehensive portrayal of the behaviour genetics of the fruit fly (Drosophila melanogaster) and the methods used in these studies.

Cellular and Molecular Mechanism Controlling Collective Glial Cell Migration in Drosophila

Cellular and Molecular Mechanism Controlling Collective Glial Cell Migration in Drosophila
Author: Arun Kumar
Publisher:
Total Pages: 0
Release: 2013
Genre:
ISBN:

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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.