Download or read book Investigation of the Molecular Mechanisms that Mediate Neural Circuit Formation written by Katherine Watters and published by . This book was released on 2016 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thought, perception, and behavior rely on the faithful transfer of information between neurons, the cells of the nervous system. To ensure proper neural circuit formation, neurons must form connections with the proper neuronal partner, a process called synaptic partner recognition. Next, the neuron must recruit synaptic components to the correct membrane, a process called synaptic assembly. These two processes must be tightly linked for proper nervous system function, and defects in either may result in developmental neurological disorders. The VanHoven laboratory uses the genetic model organism Caenhorabditis elegans and the transgenic fluorescent marker NLG-1 GRASP. NLG-1 GRASP fluorescently labels synapses that form between the PHB chemosensory neurons and the AVA interneurons in vivo. Previously the VanHoven laboratory revealed that the ligand-receptor pair UNC-6/Netrin and UNC-40/DCC act in a juxtacrine manner to specify synaptic partner recognition between PHB and AVA neurons. Here, we study two other genes required in neural circuit formation: the transmembrane receptor clr-1/Receptor Protein Tyrosine Phosphatase (RPTP) and the small vesicle transporter protein unc-69/Small Coiled-Coil (SCOCO). We find that both CLR-1/RPTP and UNC-69/SCOCO are required for proper PHB to AVA synaptogenesis, act in the previously described UNC-6/Netrin UNC-40/DCC pathway, and likely function downstream of UNC-6/Netrin. Further characterization of how CLR-1/RPTP and UNC-69/SCOCO mediate nervous system development will help us to understand the logic of neural circuit formation as well as aid in the development of treatments for neurological disorders.
Download or read book Neural Plasticity and Memory written by Federico Bermudez-Rattoni and published by CRC Press. This book was released on 2007-04-17 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive, multidisciplinary review, Neural Plasticity and Memory: From Genes to Brain Imaging provides an in-depth, up-to-date analysis of the study of the neurobiology of memory. Leading specialists share their scientific experience in the field, covering a wide range of topics where molecular, genetic, behavioral, and brain imaging techniq
Download or read book Development of Neural Circuitry written by and published by Academic Press. This book was released on 2009-05-07 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: The nervous system is highly complex both in its structural order and in its ability to perform the many functions required for survival and interaction with the environment; understanding how it develops has proven to be one of the greatest challenges in biology. Such precision demands that key events at every developmental stage are executed properly and are coordinated to produce the circuitry underlying each of the adult nervous system's functions. This volume describes the latest research on the cellular and molecular mechanisms of neural circuitry development, while providing researchers with a one-stop overview and synthesis of contemporary thought in the area. Reviews current research findings on the development of neural circuitry, providing researchers with an overview and synthesis of the latest contemporary thought in the cellular and molecular mechanisms that underlie the development of neural circuitry Includes chapters discussing topics such as the guidance of nerve growth and the formation of plasticity of synapses, helping researchers better understand underlying mechanisms of neural circuit development and maintenance that may play a role in such human diseases/conditions as depression, anxiety, and pain Chapters make use of a variety of human and animal models, allowing researchers to compare and contrast neural circuitry development across a wide spectrum of models
Download or read book Mechanisms of Neural Circuit Formation written by Joshua A. Weiner and published by Frontiers Media SA. This book was released on 2015-01-30 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nothing provided
Download or read book Molecular Mechanisms of Neural Development and Insights Into Disease written by Greg J. Bashaw and published by Elsevier. This book was released on 2021-03-11 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neural Development and Disease, Volume 142 in the Current Topics in Developmental Biology series highlights new advances in the field, with this new volume presenting interesting chapters by one or more members of an international board of authors. Sections in this new release cover The role of primary cilia in neural development and disease, Mechanisms of axon guidance receptor regulation and signaling, Synaptic recognition molecules in development and disease, The regulation of cortical neurogenesis, Axon guidance in the developing spinal cord, The role of astrocytes in synapse formation and maturation, Development of motor circuits, Molecular mechanisms that mediate dendrite morphogenesis, and more. Provides the authority and expertise of leading contributors from an international board of authors Presents the latest release in the Current Topics in Developmental Biology series
Download or read book Molecular Mechanisms of Memory Formation written by Kartik Ramamoorthi and published by . This book was released on 2014 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: A fundamental goal in neuroscience is to understand mechanisms underlying the ability to create memories from sensory experience. While large structures such as the hippocampus are known to be critical for certain types of learning, memories are ultimately thought to be represented in sparsely distributed neuronal ensembles within these larger structures. Currently, there are few tools that allow for the identification and manipulation of these ensembles, which has limited our understanding of the molecular and cellular processes underlying learning and memory. We have previously reported that the activity-regulated transcription factor Npas4 is selectively induced in a sparse population of CA3 following contextual fear conditioning. Global knockout or selective deletion of Npas4 in CA3 both resulted in impaired contextual memory, and restoration of Npas4 in CA3 was sufficient to reverse the deficit in global knockout mice. Taking advantage of the critical role of Npas4 in contextual memory formation, we developed a set of novel molecular tools to gain access to cell populations activated by experience. Using this system, we identified and manipulated the properties of neurons activated by behavioral experience in a variety of neural circuits in mice, rats, and Drosophila. We believe that the tools developed in this thesis can provide a major advancement in the field, and will allow researchers to target any neural circuit activated by experience in a variety of species.
Download or read book A Molecular Approach to Identify Determinants of Synaptic Specificity written by LIMING TAN and published by . This book was released on 2016 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: Information processing in the nervous system relies on precise patterns of synaptic connections between neurons. The level of synaptic specificity within the nervous system is remarkable given its tremendous complexity. How neurons can distinguish their correct synaptic partners from many other neurons during circuit assembly remains a central question in neuroscience. Although important progress has been made on molecular mechanisms regulating neural circuit assembly, the cellular recognition mechanisms mediating synaptic specificity are still poorly understood. The Drosophila visual system is well suited to uncovering the molecular mechanisms underlying synaptic specificity, because of the availability of diverse genetic tools, cell type specific markers and electron microscopic reconstruction data. In the medulla neuropil of the Drosophila visual system, different neurons form synaptic connections in different layers. Within a layer, neurons form synapses with a unique set of multiple neuronal types, which represents only a subset of neurons with processes in that layer. In my thesis research, I sought to identify candidate cell recognition molecules underlying this specificity. I did RNA sequencing on closely related neurons with different layer-specific synaptic specificities, lamina neurons L1-L5 and photoreceptor R7 and R8, at the onset of synapse formation. I showed that each of the seven cell types expresses a unique set of hundreds of genes encoding cell surface and secreted proteins. Using these data and additional localization studies on proteins tagged through modification of the endogenous locus, I demonstrated that 21 paralogs of the Dpr family, a subclass of Immunoglobulin (Ig) domain containing cell surface proteins, are expressed in unique combinations in each of the seven cell types during synapse formation. Dpr interacting proteins (DIPs), comprising nine paralogs of another subclass of Ig-containing proteins, are expressed in a complementary layer-specific fashion in subsets of synaptic partners for each of the seven cell types. Thus, I demonstrated that interacting Dprs and DIPs are expressed in synaptic partners during synapse formation in the Drosophila visual system. Furthermore, I generated null mutants of Dprs and DIPs via CRISPR-based methods, and showed that mutants of two DIPs and their cognate Dprs had similar phenotypes: neurons normally expressing these DIPs had reduced number of cells in corresponding DIP and cognate Dpr mutants. These data suggested that cognate Dprs and DIPs play important roles in the development of synaptic partners expressing them.
Download or read book Translational Research in Traumatic Brain Injury written by Daniel Laskowitz and published by CRC Press. This book was released on 2016-04-21 with total page 388 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 developme
Download or read book Mechanisms of Memory written by J. David Sweatt and published by Academic Press. This book was released on 2009-09-28 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: This fully revised second edition provides the only unified synthesis of available information concerning the mechanisms of higher-order memory formation. It spans the range from learning theory, to human and animal behavioral learning models, to cellular physiology and biochemistry. It is unique in its incorporation of chapters on memory disorders, tying in these clinically important syndromes with the basic science of synaptic plasticity and memory mechanisms. It also covers cutting-edge approaches such as the use of genetically engineered animals in studies of memory and memory diseases. Written in an engaging and easily readable style and extensively illustrated with many new, full-color figures to help explain key concepts, this book demystifies the complexities of memory and deepens the reader’s understanding. More than 25% new content, particularly expanding the scope to include new findings in translational research. Unique in its depth of coverage of molecular and cellular mechanisms Extensive cross-referencing to Comprehensive Learning and Memory Discusses clinically relevant memory disorders in the context of modern molecular research and includes numerous practical examples
Download or read book Neural Mechanisms of Addiction written by Mary Torregrossa and published by Academic Press. This book was released on 2018-08-24 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neural Mechanisms of Addiction is the only book available that synthesizes the latest research in the field into a single, accessible resource covering all aspects of how addiction develops and persists in the brain. The book summarizes our most recent understanding on the neural mechanisms underlying addiction. It also examines numerous biobehavioral aspects of addiction disorders, such as reinforcement learning, reward, cognitive dysfunction, stress, and sleep and circadian rhythms that are not covered in any other publication. Readers with find the most up-to-date information on which to build a foundation for their future research in this expanding field. Combining chapters from leading researchers and thought leaders, this book is an indispensable guide for students and investigators engaged in addiction research. Transcends multiple neural, neurochemical and behavioral domains Summarizes advances in the field of addiction research since the advent of optogenetics Discusses the most current, leading theories of addiction, including molecular mechanisms and dopamine mechanisms
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 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 Neurobehavioral Genetics written by Byron C. Jones and published by CRC Press. This book was released on 2006-08-30 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: A complete background to concepts and principles of behavioral genetics, Neurobehavioral Genetics: Methods and Applications, Second Edition features a broad spectrum of the most current techniques in neurobehavioral genetics in a single source. International researchers incorporate several new developments in the field, including: De
Download or read book Axon Growth and Regeneration written by Andrew J. Murray and published by Humana. This book was released on 2014-05-17 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Axon Growth and Regeneration: Methods and Protocols brings together a diverse set of techniques for the study of the mechanisms underlying central nervous system axon growth, consequently providing a resource that will aid in the development of repair strategies. After an introductory section, this detailed volume continues with sections focusing on axon growth in vitro, providing a range of protocols that can be used to examine intracellular signalling pathways, axonal responses to extracellular factors and methods for quantifying outgrowth. The next section provides protocols for inducing experimental injury in vivo as well as some highly promising protocols for promoting regeneration, which segues into the final section highlighting a series of protocols that can be used to monitor the extent of axon regeneration in vivo, ranging from tract tracing to in vivo imaging and functional recovery. As a book in the Methods in Molecular Biology series, chapters contain 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. Practical and reliable, Axon Growth and Regeneration: Methods and Protocols aims to serve researchers studying axon regeneration with a significant set of diverse tools, vital for moving on to the next generation of exciting new discoveries in the field.
Download or read book The Theoretical Foundation of Dendritic Function written by Wilfrid Rall and published by MIT Press. This book was released on 1995 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection of fifteen previously published papers, some of them not widely available, have been carefully chosen and annotated by Rall's colleagues and other leading neuroscientists.
Download or read book The Biology of Thought written by Krishnagopal Dharani and published by Academic Press. This book was released on 2014-08-28 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: The question of "what is thought" has intrigued society for ages, yet it is still a puzzle how the human brain can produce a myriad of thoughts and can store seemingly endless memories. All we know is that sensations received from the outside world imprint some sort of molecular signatures in neurons – or perhaps synapses – for future retrieval. What are these molecular signatures, and how are they made? How are thoughts generated and stored in neurons? The Biology of Thought explores these issues and proposes a new molecular model that sheds light on the basis of human thought. Step-by-step it describes a new hypothesis for how thought is produced at the micro-level in the brain – right at the neuron. Despite its many advances, the neurobiology field lacks a comprehensive explanation of the fundamental aspects of thought generation at the neuron level, and its relation to intelligence and memory. Derived from existing research in the field, this book attempts to lay biological foundations for this phenomenon through a novel mechanism termed the "Molecular-Grid Model" that may explain how biological electrochemical events occurring at the neuron interact to generate thoughts. The proposed molecular model is a testable hypothesis that hopes to change the way we understand critical brain function, and provides a starting point for major advances in this field that will be of interest to neuroscientists the world over. Written to provide a comprehensive coverage of the electro-chemical events that occur at the neuron and how they interact to generate thought Provides physiology-based chapters (functional anatomy, neuron physiology, memory) and the molecular mechanisms that may shape thought Contains a thorough description of the process by which neurons convert external stimuli to primary thoughts
Download or read book Multiple Sclerosis written by Institute of Medicine and published by National Academies Press. This book was released on 2001-08-10 with total page 457 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multiple sclerosis is a chronic and often disabling disease of the nervous system, affecting about 1 million people worldwide. Even though it has been known for over a hundred years, no cause or cure has yet been discovered-but now there is hope. New therapies have been shown to slow the disease progress in some patients, and the pace of discoveries about the cellular machinery of the brain and spinal cord has accelerated. This book presents a comprehensive overview of multiple sclerosis today, as researchers seek to understand its processes, develop therapies that will slow or halt the disease and perhaps repair damage, offer relief for specific symptoms, and improve the abilities of MS patients to function in their daily lives. The panel reviews existing knowledge and identifies key research questions, focusing on: Research strategies that have the greatest potential to understand the biological mechanisms of recovery and to translate findings into specific strategies for therapy. How people adapt to MS and the research needed to improve the lives of people with MS. Management of disease symptoms (cognitive impairment, depression, spasticity, vision problems, and others). The committee also discusses ways to build and financially support the MS research enterprise, including a look at challenges inherent in designing clinical trials. This book will be important to MS researchers, research funders, health care advocates for MS research and treatment, and interested patients and their families.
