Download or read book Imaging Synapse Structure and Function written by George J. Augustine and published by Frontiers Media SA. This book was released on 2017-07-06 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: Development of new imaging technologies in recent years has transformed neuroscience in profound ways. Following on the heels of the revolution based on the Green Fluorescent Protein, refined genetically-encoded fluorescent reporters and genetic targeting strategies now enable optical recording of synaptic transmission in defined neuronal populations at speeds approaching the enviable temporal resolution of electrophysiology. Super-resolution light microscopy permits observation of synapses and their molecular machinery at sub-diffraction resolution. At the ultrastructural level, automated forms of electron microscopy, improvements in specimen fixation methods, and recent efforts to correlate data from light and electron micrographs now make the reconstruction of functional neural circuits a reality. Finally, the use of optogenetic actuators, such as channelrhodopsins, allows precise temporal and spatial manipulation of neuronal activity and is revealing profound insights into the organization of neural circuits and their roles in behavior. This research topic highlights recent advances in both light and electron microscopy, with a specific focus on approaches that combine innovations from several different fields to obtain novel information about synapse structure and function. We are confident that this collection of articles - three original research papers, six reviews, one methods paper and one perspective article - will enable neuroscientists to achieve the next generation of experiments aimed at cracking the neural code.
Download or read book Make Life Visible written by Yoshiaki Toyama and published by Springer Nature. This book was released on 2019-10-02 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book describes marked advances in imaging technology that have enabled the visualization of phenomena in ways formerly believed to be completelyimpossible. These technologies have made major contributions to the elucidation of the pathology of diseases as well as to their diagnosis and therapy. The volume presents various studies from molecular imaging to clinical imaging. It also focuses on innovative, creative, advanced research that gives full play to imaging technology inthe broad sense, while exploring cross-disciplinary areas in which individual research fields interact and pursuing the development of new techniques where they fuse together. The book is separated into three parts, the first of which addresses the topic of visualizing and controlling molecules for life. Th e second part is devoted to imaging of disease mechanisms, while the final part comprises studies on the application of imaging technologies to diagnosis and therapy. Th e book contains the proceedings of the 12th Uehara International Symposium 2017, “Make Life Visible” sponsored by the Uehara Memorial Foundation and held from June 12 to 14, 2017. It is written by leading scientists in the field and is an open access publication under a CC BY 4.0 license.
Download or read book The Synapse written by Virginia M. Pickel and published by Elsevier. This book was released on 2013-11-16 with total page 529 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Synapse summarizes recent advances in cellular and molecular mechanisms of synaptic transmission and provides new insights into neuronal plasticity and the cellular basis of neurological diseases. - Part 1 provides an in-depth look at structural differences and distribution of various pre- and post-synaptic proteins found at glutamatergic synapses. - Part 2 is dedicated to dendritic spines and their associated perisynaptic glia, which together constitute the tripartite synapse. The spines are portrayed as major sites for calcium sequestration and local protein synthesis. - Part 3 highlights the important regional and cellular differences between glutamatergic transmission and that of neurotransmitters such as dopamine and acetylcholine that are commonly found in axon terminals without synaptic membrane specializations. - Part 4 provides an overview of the synapse from the time of formation to degeneration under the powerful influence of aging or hormonal decline that leads to severe deficits in cognitive function. Each chapter is illustrated with drawings and images derived from calcium imaging, electron microscopic immunolabeling, or electrophysiology. This book is a valuable reference for neuroscientists and clinical neurologists in both research and clinical settings. - A comprehensive reference focused on the structure and function of the synapse - Covers the links between the synapse and neural plasticity and the cellular basis of neurologic disease - Detailed coverage of dendritic spines and associated perisynaptic glia—the tripartite synapse - Includes in-depth coverage of synapse degeneration due to aging or hormonal decline related to severe cognitive impairment
Download or read book Structural and Functional Organization of the Synapse written by Johannes W. Hell and published by Springer Science & Business Media. This book was released on 2008-06-25 with total page 801 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new Springer volume, which comes complete with a free DVD, is a comprehensive and detailed overview of the synapse with emphasis on the glutamatergic synapse. Most chapters relate the synapse’s functional aspects to its molecular mechanisms. This approach shows which mechanisms are characterized on both the functional and structural level and can thus be considered firmly established. It’s an important text for neuroscientists and disease-oriented clinicians in neurology.
Download or read book Structure and Function of Synapses written by New York Society of Electron Microscopists and published by . This book was released on 1972 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Neurotransmitter Release written by Hugo J. Bellen and published by Oxford University Press, USA. This book was released on 1999 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides the reader with background information on neurotransmitter release. Emphasis is placed on the rationale by which proteins are assigned specific functions rather than just providing facts about function.
Download or read book Discovering the Brain written by National Academy of Sciences and published by National Academies Press. This book was released on 1992-01-01 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: The brain ... There is no other part of the human anatomy that is so intriguing. How does it develop and function and why does it sometimes, tragically, degenerate? The answers are complex. In Discovering the Brain, science writer Sandra Ackerman cuts through the complexity to bring this vital topic to the public. The 1990s were declared the "Decade of the Brain" by former President Bush, and the neuroscience community responded with a host of new investigations and conferences. Discovering the Brain is based on the Institute of Medicine conference, Decade of the Brain: Frontiers in Neuroscience and Brain Research. Discovering the Brain is a "field guide" to the brainâ€"an easy-to-read discussion of the brain's physical structure and where functions such as language and music appreciation lie. Ackerman examines: How electrical and chemical signals are conveyed in the brain. The mechanisms by which we see, hear, think, and pay attentionâ€"and how a "gut feeling" actually originates in the brain. Learning and memory retention, including parallels to computer memory and what they might tell us about our own mental capacity. Development of the brain throughout the life span, with a look at the aging brain. Ackerman provides an enlightening chapter on the connection between the brain's physical condition and various mental disorders and notes what progress can realistically be made toward the prevention and treatment of stroke and other ailments. Finally, she explores the potential for major advances during the "Decade of the Brain," with a look at medical imaging techniquesâ€"what various technologies can and cannot tell usâ€"and how the public and private sectors can contribute to continued advances in neuroscience. This highly readable volume will provide the public and policymakersâ€"and many scientists as wellâ€"with a helpful guide to understanding the many discoveries that are sure to be announced throughout the "Decade of the Brain."
Download or read book Homeostatic Synaptic Plasticity From Synaptic Circuit Assembly to Neurological Disorders written by Lorenzo A. Cingolani and published by Frontiers Media SA. This book was released on 2021-07-08 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Foundations of Neuroscience written by Casey Henley and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nanoscale Imaging of Synapses written by U. Valentin Nägerl and published by Humana. This book was released on 2016-08-23 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Synapses underlie rapid and flexible neural communication in the brain and they hold the key to understanding higher brain functions in health and disease. Because they are very small and highly dynamic, it is very difficult to study them with traditional techniques. Fortunately, recent ground-breaking advances in optical microscopy (e.g. STED, PALM, STORM, SIM) have greatly improved our ability to image living synapses at the nanoscale, even down to the level of single molecules. The proposed volume brings together leading researchers to review these exciting new techniques and their application in neurobiological research. It will explain and discuss the basic principles behind the various superresolution modalities, how they are implemented, what their scope and limitations are etc. In addition, several key research discoveries on synapses enabled by these novel approaches will be highlighted.
Download or read book The Sticky Synapse written by Michael Hortsch and published by Springer Science & Business Media. This book was released on 2009-06-07 with total page 451 pages. Available in PDF, EPUB and Kindle. Book excerpt: The molecular mechanisms, which are responsible for the functional differences between the various types of neuronal synapses, have become one of the central themes of modern neurobiology. It is becoming increasingly clear that a misregulation of synaptogenesis and synaptic remodeling and dysfunctional neuronal synapses are at the heart of several human diseases, both neurological disorders and psychiatric conditions. As synapses present specialized cellular junctions between neurons and their target cells, it may not come as a surprise that neural cell adhesion molecules (CAMs) are of special importance for the genesis and the maintenance of synaptic connections. Genes encoding adhesive molecules make up a significant portion of the human genome, and neural CAMs even have been postulated to be a major factor in the evolution of the human brain. These are just some of the many reasons why we thought a book on neural CAMs and their role in establishing and maintaining neuronal synapses would be highly appropriate for summarizing our current state of knowledge. Without question, over the near future, additional adhesive proteins will join the ranks of synaptic CAMs and our knowledge, and how these molecules enable neurons and their targets to communicate effectively will grow.
Download or read book The Synapse written by Morgan Sheng and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A subject collection from Cold Spring Harbor perspectives in biology"--T.p. verso.
Download or read book Cell Biology by the Numbers written by Ron Milo and published by Garland Science. This book was released on 2015-12-07 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Top 25 CHOICE 2016 Title, and recipient of the CHOICE Outstanding Academic Title (OAT) Award. How much energy is released in ATP hydrolysis? How many mRNAs are in a cell? How genetically similar are two random people? What is faster, transcription or translation?Cell Biology by the Numbers explores these questions and dozens of others provid
Download or read book Biophysics of Computation written by Christof Koch and published by Oxford University Press. This book was released on 2004-10-28 with total page 587 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neural network research often builds on the fiction that neurons are simple linear threshold units, completely neglecting the highly dynamic and complex nature of synapses, dendrites, and voltage-dependent ionic currents. Biophysics of Computation: Information Processing in Single Neurons challenges this notion, using richly detailed experimental and theoretical findings from cellular biophysics to explain the repertoire of computational functions available to single neurons. The author shows how individual nerve cells can multiply, integrate, or delay synaptic inputs and how information can be encoded in the voltage across the membrane, in the intracellular calcium concentration, or in the timing of individual spikes.Key topics covered include the linear cable equation; cable theory as applied to passive dendritic trees and dendritic spines; chemical and electrical synapses and how to treat them from a computational point of view; nonlinear interactions of synaptic input in passive and active dendritic trees; the Hodgkin-Huxley model of action potential generation and propagation; phase space analysis; linking stochastic ionic channels to membrane-dependent currents; calcium and potassium currents and their role in information processing; the role of diffusion, buffering and binding of calcium, and other messenger systems in information processing and storage; short- and long-term models of synaptic plasticity; simplified models of single cells; stochastic aspects of neuronal firing; the nature of the neuronal code; and unconventional models of sub-cellular computation.Biophysics of Computation: Information Processing in Single Neurons serves as an ideal text for advanced undergraduate and graduate courses in cellular biophysics, computational neuroscience, and neural networks, and will appeal to students and professionals in neuroscience, electrical and computer engineering, and physics.
Download or read book History of the Synapse written by Max R. Bennett and published by CRC Press. This book was released on 2003-09-02 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: The History of the Synapse provides a history of those discoveries concerning the identification and function of synapses that provide the foundations for research during this new century with a personal view of the process by which new concepts have developed. Previously published as essays, the chapters in this book provide a history of various aspects of synaptic function, beginning with the evolution over two and a half thousand years and how progress was made in the establishment of a conceptual structure that would allow the synapse to be identified at the beginning of the 20th century. Numerous illustrations explain either the technical approach or the experimental finding.
Download or read book Modulation of the Astrocytic Influence on Synapse Structure and Function by Ethanol and Cholinergic Stimulation written by Pamela J. Roqué and published by . This book was released on 2013 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is increasingly becoming clear that astrocytes release numerous factors that contribute to the process of synaptogenesis. The fact that astrocytes express a wide range of neurotransmitter receptors suggest that they are capable of responding to environmental clues from surrounding neurons, yet knowledge about the signals controlling the release of factors from astrocytes is relatively sparse. Understanding how astrocytes influence typical synapse formation may provide insight as to their role in mediating disease. Using an in vitro co-culture system, the present study investigates how an important physiological neurotransmitter, acetylcholine, and a known developmental neurotoxicant, ethanol, each independently and differently act on astrocytes to modulate synapse formation and function. Here we report that primary rat hippocampal neurons (E21) grown in culture for 13 days and co-cultured for 24 hours with astrocytes pre-treated with either carbachol, an acetylcholine receptor agonist (0.010, 0.100, 1 mM) or ethanol (25, 50, 75 mM) for 24 hours, show increased expression of the pre- and post-synaptic proteins, synaptophysin and PSD-95, with carbachol pre-treatment inducing a greater effect than ethanol. Immunocytochemical labeling of the same proteins, followed by confocal imaging and 3-dimensional object analysis shows that carbachol (1 mM) pre-treatment of astrocytes resulted in a 3.2-fold potentiation of synaptic structure formation, an effect mediated by cholinergic actions on the M3 muscarinic and nicotinic ACh receptors. Ethanol pre-treatment of astrocytes induced a bi-phasic increase in the number of synapses, with 50 mM ethanol inducing a 4.5-fold increase, an effect greater than 75 mM pre-treatment (2.6-fold). To corroborate that the observed increase in synaptic structures is reflected in an increase in functionality, whole cell patch clamp techniques were used to measure spontaneous miniature excitatory post-synaptic currents in neurons after co-culture with pre-treated astrocytes. A higher frequency of events was observed in neurons of both treatment groups, suggesting more functional synapses, however, a second population of neurons in the ethanol (50 mM) pre-treated group showed a decreased frequency of events. Both astrocyte-released thrombospondin (TSP) and cholesterol have been shown to potentiate synapse formation in retinal ganglion cells. Our laboratory has previously shown that treatment of astrocytes with carbachol induces increased TSP1 release, while ethanol causes increased efflux of cholesterol-containing lipoproteins from astrocytes. Investigations of these two factors as potential candidates in the observed effects showed that both TSP1 and cholesterol-containing lipoproteins (CCL) are sufficient to induce synapse formation in hippocampal neurons. Pharmacologically blocking the neuronal receptors which these factors act upon showed that the release of TSP1 from carbachol-treated astrocytes and the release of cholesterol-containing lipoproteins from ethanol pre-treated astrocytes are responsible, at least in part, for the observed potentiation of synaptic structures in the co-culture system. Together these data confirm the astrocytic role in synapse formation and development, and clearly shows that they may mediate portions of the important physiological process of cholinergic stimulation during brain development. Additionally, the effects observed after astrocyte pre-treatment with ethanol suggests that astrocytes also may play a role in influencing some of the cognitive and learning disabilities observed in children exposed in utero to alcohol. While both cholinergic stimulation of astrocytes and pre-treatment with ethanol show broadly similar effects, the differences suggest that cholinergic stimulation may move the process of synapse formation forward in a regulated manner, while ethanol may be acting in a way that dysregulates the typical process.
Download or read book Anatomy and Physiology written by J. Gordon Betts and published by . This book was released on 2013-04-25 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
