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Author : Joshua A. Weiner
Publisher : Frontiers Media SA
ISBN 13 : 2889194035
Total Pages : 180 pages
Book Rating : 4.8/5 (891 download)
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
Author : Katherine Watters
Publisher :
ISBN 13 :
Total Pages : 38 pages
Book Rating : 4.:/5 (961 download)
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.
Author :
Publisher : Academic Press
ISBN 13 : 0080922619
Total Pages : 253 pages
Book Rating : 4.0/5 (89 download)
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
Author : Federico Bermudez-Rattoni
Publisher : CRC Press
ISBN 13 : 1420008412
Total Pages : 368 pages
Book Rating : 4.4/5 (2 download)
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
Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309069882
Total Pages : 610 pages
Book Rating : 4.3/5 (9 download)
Download or read book From Neurons to Neighborhoods written by National Research Council and published by National Academies Press. This book was released on 2000-11-13 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt: How we raise young children is one of today's most highly personalized and sharply politicized issues, in part because each of us can claim some level of "expertise." The debate has intensified as discoveries about our development-in the womb and in the first months and years-have reached the popular media. How can we use our burgeoning knowledge to assure the well-being of all young children, for their own sake as well as for the sake of our nation? Drawing from new findings, this book presents important conclusions about nature-versus-nurture, the impact of being born into a working family, the effect of politics on programs for children, the costs and benefits of intervention, and other issues. The committee issues a series of challenges to decision makers regarding the quality of child care, issues of racial and ethnic diversity, the integration of children's cognitive and emotional development, and more. Authoritative yet accessible, From Neurons to Neighborhoods presents the evidence about "brain wiring" and how kids learn to speak, think, and regulate their behavior. It examines the effect of the climate-family, child care, community-within which the child grows.
Author : Benjamin Throesch
Publisher :
ISBN 13 :
Total Pages : 145 pages
Book Rating : 4.:/5 (114 download)
Download or read book Novel Genetic Strategies to Probe Mechanisms Underlying Neuronal Development and Circuit Formation written by Benjamin Throesch and published by . This book was released on 2020 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt: The brain is a complex organ that contains hundreds of diverse cellular subtypes which organize into unique regions and build intricate neural circuits. Neurons all transition through developmental stages where they must specify into cellular subtypes, migrate to appropriate brain regions, and extend axons to innervate postsynaptic targets as well as elaborate dendritic trees to receive incoming information. These stages are shaped by a balance of intracellular transcriptional programs and extracellular signals such as guidance molecules, adhesion proteins, and neuronal activity. While an extensive list of factors contributing to these processes has been catalogued, the details remain unclear on how they converge within a cell to direct its development. Therefore, we developed novel genetic systems to decipher the rules that shape neuronal development and circuit formation. In one set of studies, we selectively blocked synaptic activity from a subset of neurons within the rodent olfactory bulb to investigate their role in shaping olfactory circuit development. We observed a dramatic impact on the maturation of newborn inhibitory neurons which could not be completely rescued by inhibiting cell death. By assessing the transcriptome of these developmentally-stalled neurons, we identified gene networks that regulate the maturation and integration of neurons into established circuits. For the second set of experiments, we injected rat stem cells into mouse blastocysts to generate rat-mouse brain chimeras and determine whether rat neurons are flexible to develop into, and contribute to foreign neural circuits. In brain-complemented chimeras, we observed diverse rat neuronal subtypes that adopt their host's developmental timeline and functionally integrate into the mouse brain. Furthermore, we identified species-specific barriers to rat complementation when these neurons are challenged to reconstitute degenerated mouse circuits. Together, these studies provide insights into the mechanisms governing neuronal integration into foreign and compromised neural circuits, which will inform efforts in regenerative medicine.
Author : Taylor L Rudisill
Publisher :
ISBN 13 :
Total Pages : 87 pages
Book Rating : 4.:/5 (15 download)
Download or read book Pharmacological Regulation of Neural Circuit Formation in HIPSC-Derived Neurons and 'Mini-Brains'. written by Taylor L Rudisill and published by . This book was released on 2018 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emerging evidence suggests that altered neural connectivity, particularly at the level of synaptic connections, contributes to the pathology of many neurodevelopmental and neurodegenerative diseases. For instance, post-mortem Autistic patient brain samples have increased numbers of excitatory to inhibitory synaptic connections, referred to as an E/I imbalance [42]. Contrastingly, post-mortem brain samples from patients diagnosed with Alzheimer's disease have decreased numbers of synaptic connections [42]. In order to understand the mechanisms that underlie the formation of these synaptic circuits, we develop 3-D human cortical organoids ('mini-brains') from human-induced pluripotent stem cells (hIPSCs). Previous research demonstrates that rearrangements of the actomyosin cytoskeleton drive neural circuit formation, in particular the development and maturation of actin-enriched spines at excitatory synapses. This thesis work investigates how pharmacological regulation of actomyosin activity affects neuronal connectivity during neurite formation in 2-D and excitatory synapse formation in 3-D 'mini-brains'. The Rho-Kinase (ROCK) inhibitor, Y-27632, both inhibits non-muscle myosin II (NM-II) and leads to a corresponding increase in Rac-driven actin polymerization. In 2-D, Y-27632 promotes neurite formation. Specifically, Y-27632 increases the number, length, and branching of neurites in hIPSC-derived neurons. Furthermore, Y-27632 increases neurite persistence, while decreasing neurite protrusion and retraction rates. However, in 3-D, acute Y-27632 treatment increases excitatory synapse area, consistent with an increase in Rac-driven actin polymerization [39]. Thus, Y-27632 increases both neurite outgrowth and excitatory synapse formation and may serve as a potential therapeutic for neurodegenerative diseases associated with synapse loss such as Alzheimer's disease. This study demonstrates the need for physiologically-relevant brain models, such as 3-D cortical organoids, to assess the impact of drug therapies on developing neural circuits to potentially treat neurodevelopmental and neurodegenerative disorders.
Author : Hao Wang
Publisher : Springer Nature
ISBN 13 : 9811570868
Total Pages : 112 pages
Book Rating : 4.8/5 (115 download)
Download or read book Neural Circuits of Innate Behaviors written by Hao Wang and published by Springer Nature. This book was released on 2020-08-27 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarizes the latest research findings in the neurocircuitry of innate behaviors, covering major topics such as innate fear, aggression, feeding, reward, social interaction, parental care, spatial navigation, and sleep-wake regulation. For decades, humans have been fascinated by wild animals’ instincts, like the annual two-thousand-mile migration of the monarch butterfly in North American, and the “imprint” behavior of newborn birds. Since these instincts are always displayed in stereotypical patterns in most individuals of a given species, the neural circuits processing such behaviors must be genetically hard-wired in the brain. Recently, with the development of modern techniques, including optogenetics, retrograde and anterograde virus tracing, and in vivo calcium imaging, researchers have been able to determine and dissect the specific neural circuits for many innate behaviors by selectively manipulating well-defined cell types in the brain. This book discusses recent advances in the investigation of the neural-circuit mechanisms underlying innate behaviors.
Author :
Publisher : Academic Press
ISBN 13 : 0123973465
Total Pages : 849 pages
Book Rating : 4.1/5 (239 download)
Download or read book Neural Circuit Development and Function in the Healthy and Diseased Brain written by and published by Academic Press. This book was released on 2013-05-06 with total page 849 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 3 offers 40 high level articles devoted mainly to anatomical and functional development of neural circuits and neural systems, as well as those that address neurodevelopmental disorders in humans and experimental organisms. 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 3 sections include coverage of: mechanisms that control the assembly of neural circuits in specific regions of the nervous system, multiple aspects of cognitive development, and disorders of the nervous system arising through defects in neural development
Author : Kartik Ramamoorthi
Publisher :
ISBN 13 :
Total Pages : 238 pages
Book Rating : 4.:/5 (879 download)
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.
Author : National Academy of Sciences
Publisher : National Academies Press
ISBN 13 : 0309045290
Total Pages : 195 pages
Book Rating : 4.3/5 (9 download)
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."
Author : Masahito Yamagata
Publisher : Frontiers Media SA
ISBN 13 : 2889711498
Total Pages : 294 pages
Book Rating : 4.8/5 (897 download)
Download or read book Neuroscience and Neurotechnology of Neuronal Cell Surface Molecules in Neural Circuits written by Masahito Yamagata and published by Frontiers Media SA. This book was released on 2021-08-05 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert Malenka
Publisher : Academic Press
ISBN 13 : 0123785723
Total Pages : 777 pages
Book Rating : 4.1/5 (237 download)
Download or read book Intercellular Communication in the Nervous System written by Robert Malenka and published by Academic Press. This book was released on 2010-05-22 with total page 777 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intercellular communication is part of a complex system of communication that governs basic cellular activities and coordinates cell actions. The ability of cells to perceive and correctly respond to their environment is the basis of growth and development, tissue repair, and immunity as well as normal tissue homeostasis. Errors in cellular information processing are responsible for diseases such as cancer, autoimmunity, diabetes, and neurological and psychiatric disorders. There is substantial drug development concentrating on this and intercellular communication is the basis of much of neuropharmacology. By understanding cell signaling, diseases may be treated effectively and, theoretically, artificial tissues may be yielded. Neurotransmitters/receptors, synaptic structure and organization, gap junctions, neurotrophic factors and neuropeptides are all explored in this volume, as are the ways in which signaling controls neuroendocrinology, neuroimmunology and neuropharmacology. Intercellular Communication in the Nervous System provides a valuable desk reference for all scientists who consider signaling. Chapters offer impressive scope with topics addressing neurotransmitters/receptors, synaptic structure and organization, neuropeptides, gap junctions, neuropharmacology and more Richly illustrated in full color with over 200 figures Contributors represent the most outstanding scholarship in the field, with each chapter providing fully vetted and reliable expert knowledge
Author : Ying Lin
Publisher :
ISBN 13 :
Total Pages : 140 pages
Book Rating : 4.:/5 (128 download)
Download or read book Temporal Control of Gene Expression During Neural Circuit Formation written by Ying Lin and published by . This book was released on 2021 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proper neural circuit formation is crucial for brain function and animal behavior. How neurons form connections with the right partners at the right subcellular locations is an essential question in neuroscience. Many mechanisms such as cell recognition, local signaling, and neural activity, have been shown to regulate neural circuit assembly, but the temporal regulation mechanisms of gene expression remain unclear. Recent improvement of single cell RNA-seq (scRNA-seq) method enables us to profile transcriptomes of many types of neurons at multiple developmental stages to study gene expression changes during neural development. By analyzing the transcriptomes of developing neurons in the Drosophila visual system, we identified that a cascade of transcription factors induced by steroid hormone ecdysone is expressed in a highly synchronized fashion in all neurons during circuit assembly. We demonstrated that disrupting the ecdysone signaling leads to specific wiring defects in multiple types of neurons. Using scRNA-seq, we profiled 5 types of lamina neurons with different genetic perturbations that disrupt the ecdysone pathway. The results showed that a common set of genes required for neuronal maturation and a cell-type specific set of genes enriched for recognition molecules are controlled by the ecdysone pathway. Cell-type specific recognition molecules can be co-regulated by the globally controlled ecdysone pathway and constantly expressed cell-type specific transcription factors (i.e. Erm). These data showed that neurons integrate a global temporal program with cell-type specific transcription factors to express distinct sets of cell recognition molecules at different time points to regulate neural circuit assembly. By coordinating when and which recognition molecules are expressed in different neurons, the global temporal program could generate more molecular codes for neural interactions and choreograph circuit assembly.
Author : Gordon M. Shepherd
Publisher : Oxford University Press
ISBN 13 : 0190636114
Total Pages : 625 pages
Book Rating : 4.1/5 (96 download)
Download or read book Handbook of Brain Microcircuits written by Gordon M. Shepherd and published by Oxford University Press. This book was released on 2018 with total page 625 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to focus on principles, each chapter in this work is brief, organized around 1-3 wiring diagrams of the key circuits, with several pages of text that distil the functional significance of each microcircuit
Author : Martina Schättin
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (136 download)
Download or read book Different Regulatory Mechanisms Contribute to the Navigation of Choice Points During Neural Circuit Formation written by Martina Schättin and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 : 9780815332183
Total Pages : 0 pages
Book Rating : 4.3/5 (321 download)
Download or read book Molecular Biology of the Cell written by and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
