Transcriptional And Epigenetic Regulation Of Axon Regeneration
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Transcriptional And Epigenetic Regulation Of Axon Regeneration
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Author : Marcus Mahar
language : en
Publisher:
Release Date : 2019
Transcriptional And Epigenetic Regulation Of Axon Regeneration written by Marcus Mahar and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with Electronic dissertations categories.
The mammalian nervous system is a highly intricate network consisting of over a hundred billion specialized cells called neurons. One unique characteristic of neurons is their highly polarized morphology; unlike other cells, neurons project long axonal extensions. These structures allow them to connect and communicate with not only other neurons, but also various cell types in the body and give rise to all motor, sensory, and higher order function. Because axons can extend up to three feet, they are also vulnerable to injury from sources such as traumatic brain and spinal cord injuries, stroke, or neurodegenerative diseases. Indeed, patients who have experienced these injuries often suffer debilitating, irreversible loss of function. Interestingly, whereas neurons which reside in the central nervous system are incapable of regenerating after axon injury, neurons of the peripheral nervous system activate a robust pro-regenerative response capable of promoting long distance regeneration and functional recovery. The molecular mechanisms which underlie this pro-regenerative response may provide key insights into how a pro-regenerative response could be stimulated in injured central nervous system neurons. A comprehensive overview of the known molecular mechanisms involved in this response is reviewed in Chapter 1.As mammals age, the synaptic connections between neurons mature. Following axon injury in peripheral nervous system neurons, the genes involved in synaptic function are turned off and genes required for inducing axon growth are activated. These widespread epigenetic and transcriptional changes require a coordinated effort of epigenetic and transcriptional regulators including epigenetic modifiers, transcription factors, and microRNAs. In Chapter 2, we demonstrated that these changes are, in part, a result of the rapid downregulation of microRNA-9 which occurs following axon injury. At baseline in adult peripheral nervous system neurons, microRNA-9 is highly expressed and actively represses various genes including REST and UHRF1. When microRNA-9 expression decreases following injury, both REST and UHRF1 increase with UHRF1also repressing REST and restricting REST expression to a tight temporal window. During this time, REST binds to and represses various genes involved in synaptic function such as ion channels; a process necessary for peripheral nervous system regeneration. This complete published work can be found in Chapter 2.In coordination with epigenetic modifiers such as UHRF1, various transcription factors are activated following axon injury and promote the expression of pro-growth genes. Various studies have worked to identify the transcription factors involved in this process as exogenous overexpression of transcription factors has been shown to confer specific phenotypes of interest, such as the conversion of one cell type to another, when the correct combination of transcription factors is manipulated. To further this work, in Chapter 3 I used bioinformatics analysis to identify 27 transcription factors putatively involved in the establishment of the pro-regenerative response. Using two complimentary in vitro screens, determined which transcription factors were both necessary for peripheral nervous system axon regeneration and sufficient to drive central nervous system axon regeneration. By pairing these results with network-based bioinformatics analysis, we identified Creb1 as a transcription factor which sits atop the pro-regenerative gene regulatory network. Follow-up studies in which we overexpressed Creb1during optic nerve regeneration demonstrated Creb1 is sufficient to promote central nervous system axon regeneration in vivo. This work provides exciting new insight into the various transcription factors regulating this response as well as their putative genetic relationships.
Epigenetics And Regeneration
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Author :
language : en
Publisher: Academic Press
Release Date : 2019-05-24
Epigenetics And Regeneration written by and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-05-24 with Science categories.
Epigenetics and Regeneration compiles the first foundational reference on epigenetic mechanisms governing tissue development, repair, homeostasis, and regeneration, as well as pathways to employ these mechanisms in clinical practice and translational science. In this book, life science researchers, clinicians, and students will discover an interdisciplinary resource bringing together common themes in the field, background overviews, research methods, recent advances, and opportunities for drug discovery. Throughout this volume, special attention is paid to pre-clinical and first clinical studies aimed at increasing the regenerative potential of damaged tissues by epigenetic drugs, as well as innovative, discipline spanning strategies to enhance cell reprogramming. As an all-inclusive, evidence-based volume, Epigenetics and Regeneration will stimulate discussion and boost new research in this fascinating and impactful area of translational epigenetics. Provides a foundational overview of epigenetics in regenerative medicine Examines epigenetic components of tissue regeneration for a variety of organ systems and tissue types, as well as current attempts to employ these mechanisms in clinical practice Offers researchers, students, clinicians, and pharmacologists the tools they need to enhance tissue development, repair, homeostasis, and regeneration and explore new epigenetic therapeutic pathways Features chapter contributions from leading international researchers and clinicians in the fields of epigenetics and regenerative medicine
Regeneration In The Central Nervous System
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Author : William Frederick Windle
language : en
Publisher:
Release Date : 1955
Regeneration In The Central Nervous System written by William Frederick Windle and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1955 with Brain categories.
Handbook Of Epigenetics
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Author : Trygve Tollefsbol
language : en
Publisher: Academic Press
Release Date : 2017-07-10
Handbook Of Epigenetics written by Trygve Tollefsbol and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-07-10 with Science categories.
Handbook of Epigenetics: The New Molecular and Medical Genetics, Second Edition, provides a comprehensive analysis of epigenetics, from basic biology, to clinical application. Epigenetics is considered by many to be the new genetics in that many biological phenomena are controlled, not through gene mutations, but rather through reversible and heritable epigenetic processes. These epigenetic processes range from DNA methylation to prions. The biological processes impacted by epigenetics are vast and encompass effects in lower organisms and humans that include tissue and organ regeneration, X-chromosome inactivation, stem cell differentiation, genomic imprinting, and aging. The first edition of this important work received excellent reviews; the second edition continues its comprehensive coverage adding more current research and new topics based on customer and reader reviews, including new discoveries, approved therapeutics, and clinical trials. From molecular mechanisms and epigenetic technology, to discoveries in human disease and clinical epigenetics, the nature and applications of the science is presented for those with interests ranging from the fundamental basis of epigenetics, to therapeutic interventions for epigenetic-based disorders. Timely and comprehensive collection of fully up-to-date reviews on epigenetics that are organized into one volume and written by leading figures in the field Covers the latest advances in many different areas of epigenetics, ranging from basic aspects, to technologies, to clinical medicine Written at a verbal and technical level that can be understood by scientists and college students Updated to include new epigenetic discoveries, newly approved therapeutics, and clinical trials
Extracellular And Intracellular Signaling
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Author : James D. Adams
language : en
Publisher: Royal Society of Chemistry
Release Date : 2011
Extracellular And Intracellular Signaling written by James D. Adams and has been published by Royal Society of Chemistry this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Medical categories.
Intracellular cell signaling is a well understood process. However, extracellular signals such as hormones, adipokines, cytokines and neurotransmitters are just as important but have been largely ignored in other works. Aimed at medical professionals and pharmaceutical specialists, this book integrates extracellular and intracellular signalling processes and offers a fresh perspective on new drug targets.
Cns Regeneration
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Author : Jeffrey Kordower
language : en
Publisher: Elsevier
Release Date : 2011-04-28
Cns Regeneration written by Jeffrey Kordower and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-04-28 with Medical categories.
This second edition of CNS Regeneration updates the burgeoning field of regeneration in the Central Nervous System (CNS) from molecular, systems, and disease-based perspective. While the book covers numerous areas in detail, special emphasis is given to discussions of movement disorders such as Parkinson’s disease, Alzheimer’s disease, and spinal cord injury. Incorporates information gained from cutting-edge photomicroscopy techniques Includes current information on clinical trials Presents chapters on stem cells and other novel treatments for diseases of the CNS
Ischemic Optic Neuropathies
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Author : Sohan Singh Hayreh
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-08-28
Ischemic Optic Neuropathies written by Sohan Singh Hayreh and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-08-28 with Medical categories.
Ischemic optic neuropathy, often referred to as a stroke of the optic nerve, is one of the major causes of visual impairment or loss of vision. Yet it is a highly controversial and confusing subject because of the general lack of in-depth scientific understanding of the subject. In this book the leading authority in the field describes in detail the current knowledge about the different forms of the often devastating disease. Insights into the underlying pathogenesis and peculiar clinical features are given, leading the reader to the most appropriate way of management. This information will help any physician dealing with patients who suffer from sudden loss of vision.
Ocular Vascular Occlusive Disorders
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Author : Sohan Singh Hayreh
language : en
Publisher: Springer
Release Date : 2015-02-18
Ocular Vascular Occlusive Disorders written by Sohan Singh Hayreh and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-02-18 with Medical categories.
This book provides a comprehensive account of the pathogenesis, clinical features, and management of ocular vascular occlusive disorders, with the focus very much on the scientific evidence. This offers a sound basis for addressing the many controversies that surround these disorders, which collectively constitute the most common cause of visual impairment or blindness. The book is divided into two sections, the first of which addresses the basic science and encompasses vascular anatomy, blood supply and flow, and retinal tolerance time to acute ischemia. The second, clinical, section covers the presentation, clinical features, diagnosis, and treatment of the full range of vascular occlusive disorders of the retina, the choroid, the anterior segment of the eye, ophthalmic manifestations of carotid artery disease and the optic nerve. Ocular Vascular Occlusive Disorders, written by a distinguished world leader in the field, will be invaluable for general ophthalmologists, and particularly for retina specialists, neuro-ophthalmologists, and researchers.
Axon Regeneration
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Author : Ava J. Udvadia
language : en
Publisher: Springer Nature
Release Date : 2023-03-07
Axon Regeneration written by Ava J. Udvadia and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-03-07 with Medical categories.
This volume covers a wide range of approaches utilized to decipher cellular and molecular mechanisms that contribute to successful nerve regeneration leading to functional recovery. Chapters detail a variety of models utilizing both in vivo and in vitro approaches, physical injury models, methods for the isolation/analysis of various macromolecules, live and fixed imaging of regenerating axons, and for quantifying behavioral endpoints enable measurements of regenerative success. Written in the format of the highly successful Methods in Molecular Biology series, each chapter includes an introduction to the topic, lists necessary materials and methods, includes tips on troubleshooting and known pitfalls, and step-by-step, readily reproducible protocols. Authoritative and cutting-edge, Axon Regeneration: Methods and Protocols aims to be comprehensive guide for researchers.
Building The Most Complex Structure On Earth
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Author : Nelson R Cabej
language : en
Publisher: Newnes
Release Date : 2013-04-01
Building The Most Complex Structure On Earth written by Nelson R Cabej and has been published by Newnes this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-04-01 with Science categories.
Building the Most Complex Structure on Earth provides readers with a basic biological education an easy and understandable introduction into a new epigenetic theory of development and evolution. This is a novel theory that describes the epigenetic mechanisms of the development and evolution of animals and explains the colossal evolution and diversification of animals from a new post-genetic perspective. Modern biology has demonstrated the existence of a common genetic toolkit in the animal kingdom, but neither the number of genes nor the evolution of new genes is responsible for the development and evolution of animals. The failure to understand how the same genetic toolkit is used to produce millions of widely different animal forms remains a perplexing conundrum in modern biology. The novel theory shows that the development and evolution of the animal kingdom are functions of epigenetic mechanisms, which are the competent users of the genetic toolkit. Provides a comprehensive view of the epigenetic aspects of reproduction, development, and evolution. Highly rigorous, but simple enough for readers with only a basic knowledge of biology.