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Author: Kuang-Ching Chris Tseng Publisher: ISBN: Category : Languages : en Pages : 167
Book Description
"Traumatic peripheral nerve crush injuries contribute a great deal of morbidity in patients and little improvement has been made in the treatment of these injuries in many years. Diagnosis and treatment of traumatic peripheral nerve damage suffer from a lack of means of accurately diagnosing the reasons for loss of nerve function and a lack of means of enhancing the time course of repair in injuries in which nerve function is lost for reasons other than axonal transection. In the current work, we demonstrate that administration of erythropoietin (EPO) shortens the time course of recovery after experimental crush injury to the mouse sciatic nerve. We found that systemic EPO administration maintained more myelinated axons at the site of injury in vivo following sciatic nerve crush. In vitro, EPO treatment promotes myelin formation and protects myelin from the effects of nitric oxide exposure in co-cultures of Schwann cells and dorsal root ganglion (DRG) neurons. These results suggested local EPO application might also be effective in promoting functional recovery, which would avoid potential systemic side effects of systemic EPO administration. We therefore developed a novel local treatment for peripheral nerve injury of EPO delivered in a fibrin glue matrix at the site of injury. Local delivery was as effective as systemic EPO administration, and thus may provide a potentially useful approach to enhancing recovery in peripheral nerve injuries. We also demonstrate that a single administration of 4-aminopyridine (4-AP), which enables impulse conduction in demyelinated axons, transiently restores function and allows identification of injuries in which axons are intact but not functional. We further demonstrate that repeated 4-AP administration markedly improves the time course of recovery from crush injuries in the peripheral nerve as determined by behavioral and electophysiological analyses. Equal or greater efficacy is provided by localized delivery of slow-release formulations of 4-AP at the lesion site. In addition, we provide biochemical and ultrastructural evidence to show that repeated systemic 4-AP delivery and localized slow-release delivery enhance remyelination after injury. Thus, we provide a single therapeutic approach that addresses critical issues in diagnosing peripheral nerve injury and enhancing repair, and provides the first pharmacological approach to enhancing myelin repair. As 4-AP is already used in the clinic for treatment of multiple sclerosis, our approaches are highly suitable for rapid translation from the laboratory to clinical analysis"--Pages v-vi.
Author: Kuang-Ching Chris Tseng Publisher: ISBN: Category : Languages : en Pages : 167
Book Description
"Traumatic peripheral nerve crush injuries contribute a great deal of morbidity in patients and little improvement has been made in the treatment of these injuries in many years. Diagnosis and treatment of traumatic peripheral nerve damage suffer from a lack of means of accurately diagnosing the reasons for loss of nerve function and a lack of means of enhancing the time course of repair in injuries in which nerve function is lost for reasons other than axonal transection. In the current work, we demonstrate that administration of erythropoietin (EPO) shortens the time course of recovery after experimental crush injury to the mouse sciatic nerve. We found that systemic EPO administration maintained more myelinated axons at the site of injury in vivo following sciatic nerve crush. In vitro, EPO treatment promotes myelin formation and protects myelin from the effects of nitric oxide exposure in co-cultures of Schwann cells and dorsal root ganglion (DRG) neurons. These results suggested local EPO application might also be effective in promoting functional recovery, which would avoid potential systemic side effects of systemic EPO administration. We therefore developed a novel local treatment for peripheral nerve injury of EPO delivered in a fibrin glue matrix at the site of injury. Local delivery was as effective as systemic EPO administration, and thus may provide a potentially useful approach to enhancing recovery in peripheral nerve injuries. We also demonstrate that a single administration of 4-aminopyridine (4-AP), which enables impulse conduction in demyelinated axons, transiently restores function and allows identification of injuries in which axons are intact but not functional. We further demonstrate that repeated 4-AP administration markedly improves the time course of recovery from crush injuries in the peripheral nerve as determined by behavioral and electophysiological analyses. Equal or greater efficacy is provided by localized delivery of slow-release formulations of 4-AP at the lesion site. In addition, we provide biochemical and ultrastructural evidence to show that repeated systemic 4-AP delivery and localized slow-release delivery enhance remyelination after injury. Thus, we provide a single therapeutic approach that addresses critical issues in diagnosing peripheral nerve injury and enhancing repair, and provides the first pharmacological approach to enhancing myelin repair. As 4-AP is already used in the clinic for treatment of multiple sclerosis, our approaches are highly suitable for rapid translation from the laboratory to clinical analysis"--Pages v-vi.
Author: Kirsten Haastert-Talini Publisher: Springer ISBN: 3319523198 Category : Medical Languages : en Pages : 144
Book Description
This book focuses on posttraumatic repair and reconstruction of peripheral nerves. Written by internationally respected specialists, it provides an overview of the challenges and the latest advances in diagnosis and treatment of traumatic peripheral nerve injuries. It presents an outline of state-of the-art procedures from diagnostics, including newest imaging techniques, over conventional and alternative surgical approaches to clinical follow-up and rehabilitation, including the latest concepts to improve functional recovery. The purely clinical topics are preceded by neuroanatomical principles and neurobiological events related to peripheral nerve transection injuries and followed by an outlook on current experimental developments in the area of biomaterials for artificial nerve grafts and peripheral nerve tissue engineering. Peripheral nerve injuries not only affect the nerve tissue at the site of injury, but also target tissue and parts of the central nervous system. They often have dramatic consequences for patients, including loss of sensory and motor functions combined with paresthesia or pain, and a reduced quality of life and ability to work. An adequate understanding of the procedures for proper decision-making and reconstructing peripheral nerves is therefore essential to ensure optimized functional recovery.
Author: William M. Reichert Publisher: CRC Press ISBN: 1420009303 Category : Medical Languages : en Pages : 300
Book Description
Despite enormous advances made in the development of external effector prosthetics over the last quarter century, significant questions remain, especially those concerning signal degradation that occurs with chronically implanted neuroelectrodes. Offering contributions from pioneering researchers in neuroprosthetics and tissue repair, Indwel
Author: P. J. Kingham Publisher: ISBN: 9783318054323 Category : Languages : en Pages : 0
Book Description
Functional recovery after peripheral nerve injury is poor, and it has become clear that surgical reconstruction should be combined with novel therapies which address the problems of the limited rate and quantity of axonal regeneration, neuronal cell death and target organ atrophy. There is significant scope for the application of cellular and biological approaches towards peripheral nerve repair. This special topics issue begins with an introduction to the importance of Schwann cell-axon interactions which is followed by a series of papers highlighting the exciting therapeutic potential of various cell types including skin, adipose, bone marrow and hair follicle-derived adult stem cells, induced pluripotent stem cells and olfactory ensheathing cells. Another biological approach, the use of chondroitinase to overcome nerve scarring, is also described. Finally, noninvasive imaging methods, which will be necessary to determine the efficacy of these novel treatments, are reviewed. The publication will be of interest to a large number of interdisciplinary scientists including cell biologists, biomaterials scientists and chemists as well as surgeons who are involved in translational research aimed at improving the treatment of peripheral nerve injury.
Author: Institute of Medicine Publisher: National Academies Press ISBN: 0309165202 Category : Medical Languages : en Pages : 360
Book Description
An estimated 11,000 spinal cord injuries occur each year in the United States and more than 200,000 Americans suffer from maladies associated with spinal cord injury. This includes paralysis, bowel and bladder dysfunction, sexual dysfunction, respiratory impairment, temperature regulation problems, and chronic pain. During the last two decades, longstanding beliefs about the inability of the adult central nervous system to heal itself have been eroded by the flood of new information from research in the neurosciences and related fields. However, there are still no cures and the challenge of restoring function in the wake of spinal cord injuries remains extremely complex. Spinal Cord Injury examines the future directions for research with the goal to accelerate the development of cures for spinal cord injuries. While many of the recommendations are framed within the context of the specific needs articulated by the New York Spinal Cord Injury Research Board, the Institute of Medicine's panel of experts looked very broadly at research priorities relating to future directions for the field in general and make recommendations to strengthen and coordinate the existing infrastructure. Funders at federal and state agencies, academic organizations, pharmaceutical and device companies, and non-profit organizations will all find this book to be an essential resource as they examine their opportunities.
Author: Thomas M. Brushart Publisher: Oxford University Press ISBN: 0199721602 Category : Medical Languages : en Pages : 476
Book Description
Nerve Repair is a historically-based, translational review of the clinical and basic science relevant to nerve repair and regeneration. Essential reading for a wide range of professionals - it summarizes pertinent research for the clinician, and the clinical aspects of nerve repair for the scientist.
Author: Oscar Alzate Publisher: CRC Press ISBN: 1420076264 Category : Medical Languages : en Pages : 356
Book Description
In this, the post-genomic age, our knowledge of biological systems continues to expand and progress. As the research becomes more focused, so too does the data. Genomic research progresses to proteomics and brings us to a deeper understanding of the behavior and function of protein clusters. And now proteomics gives way to neuroproteomics as we beg
Author: Santiago Ramón y Cajal Publisher: History of Neuroscience ISBN: 0195065166 Category : Nervous system Languages : en Pages : 977
Book Description
This book is a reprint of an English translation of Cajal's original work, with abundant notes and commentaries by the editor. This text describes Cajal's fundamental contributions to neuroscience, which continue to be important today. It accurately details Cajal's ideas and data, and providesreaders with the opportunity to learn what Cajal thought about his research career and the significance of his observations. Excerpts from Tello's memorial lectures also provide a contemporary view of Cajal's work.