Download or read book The Functional Role of Enhancing the Survival and Activity of Progenitor Cells During Stroke Recovery written by Sebastien Denize and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Following a stroke, there is a significant increase in the number of precursor cells (PCs) that migrate to the site of injury. Their functional significance, based on studies that ablate PCs, remains controversial. This thesis aims to determine if enhancing the survival of PCs, and/or optogenetically stimulating PCs, is sufficient to improve stroke recovery. After photothrombosis-induced stroke, tamoxifen was used to recombine the nestin-expressing PCs and their progeny in iBax-ChR2 mice: inducible Nestin CreERT2 mice that have a floxed Bax, pro-apoptotic gene, and a floxed channelrhodopsin (ChR2-YFP) which allows for the modulation of neural activity. Removal of the Bax gene results in a significantly increased number of PCs with a neuronal phenotype surrounding the infarct, in the absence of altering behavioral recovery. To test if enhancing the activation of PCs around the stroke site could alter recovery, iBax-ChR2 mice received daily optogenetic stimulation for 5 weeks. Interestingly, stimulation of PCs around the stroke site resulted in an increased rate of neuronal differentiation in WT-ChR2 mice but no behavioural improvements after stroke. These findings suggest that substantially increasing the neurogenic response following a stroke has no impact on behavioural recovery. Moreover, contrary to an increasing number of studies stimulating the cortex post-stroke, specifically activating PCs in the ipsilesional cortex does not alter recovery. The implications of these data are becoming increasingly relevant as stroke researchers are beginning to experiment with non-invasive stimulation and stem cell therapies for stroke survivors.
Download or read book Evaluating the Functional Role of Enhancing Progenitor Cell Survival Following Stroke Recovery written by Maheen Ceizar and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Stroke is the leading cause of long-term neurological disability worldwide, signifying the need for viable therapeutic options. Pre-clinical and post-mortem stroke studies have demonstrated that stroke increases the number of newborn progenitor cells (PCs) in the adult brain that can migrate to the site of injury. While there is a positive correlation between increasing neurogenesis and improvements in stroke recovery, methods used to increase PCs and neurogenesis also alter many other forms of plasticity, making it difficult to determine the function of PCs per se. To investigate whether specifically enhancing PC survival is sufficient to improve recovery, the iBax transgenic mouse model was used to remove the pro-apoptotic gene Bax inducibly from nestin-expressing PCs either before or after focal strokes induced by photothrombosis. Increasing PC survival before or after stroke in the iBax mice increased the number of PCs in the peri-infarct region. Interestingly, the majority of the cells that migrated to the peri-infarct region expressed the glial fibrillary acidic protein (GFAP) which is found in astrocytes when Bax was removed prior to stroke, yet when Bax was removed after stroke the majority of the cells expressed doublecortin (DCX) which is expressed in neuroblasts. Irrespective of this significant increase in the different populations of surviving PCs following stroke, there was no change in long-term behavioural deficits on the adhesive removal, horizontal ladder, and cylinder tasks up to 90 days post stroke. Additionally, enhancing PC survival before or after stroke resulted in a significant increase in adult-generated neurons within the dentate gyrus, which was associated with a modest change in spatial learning on the Barnes maze. Together, these experiments suggest strategies that enhance the survival of the PCs by preventing cell death will, by themselves, be insufficient to promote sensorimotor recovery following stroke.
Download or read book Brain Repair After Stroke written by Steven C. Cramer and published by Cambridge University Press. This book was released on 2010-10-28 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increasing evidence identifies the possibility of restoring function to the damaged brain via exogenous therapies. One major target for these advances is stroke, where most patients can be left with significant disability. Treatments have the potential to improve the victim's quality of life significantly and reduce the time and expense of rehabilitation. Brain Repair After Stroke reviews the biology of spontaneous brain repair after stroke in animal models and in humans. Detailed chapters cover the many forms of therapy being explored to promote brain repair and consider clinical trial issues in this context. This book provides a summary of the neurobiology of innate and treatment-induced repair mechanisms after hypoxia and reviews the state of the art for human therapeutics in relation to promoting behavioral recovery after stroke. Essential reading for stroke physicians, neurologists, rehabilitation physicians and neuropsychologists.
Download or read book Cerebral Small Vessel Disease written by Leonardo Pantoni and published by Cambridge University Press. This book was released on 2014-05 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt: Up-to-date discussion of the etiology, diagnosis, treatment, and prevention of this common cause of stroke and cognitive impairment.
Download or read book Clinical Pathways in Stroke Rehabilitation written by Thomas Platz and published by Springer Nature. This book was released on 2021-01-14 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book focuses on practical clinical problems that are frequently encountered in stroke rehabilitation. Consequences of diseases, e.g. impairments and activity limitations, are addressed in rehabilitation with the overall goal to reduce disability and promote participation. Based on the available best external evidence, clinical pathways are described for stroke rehabilitation bridging the gap between clinical evidence and clinical decision-making. The clinical pathways answer the questions which rehabilitation treatment options are beneficial to overcome specific impairment constellations and activity limitations and are well acceptable to stroke survivors, as well as when and in which settings to provide rehabilitation over the course of recovery post stroke. Each chapter starts with a description of the clinical problem encountered. This is followed by a systematic, but concise review of the evidence (RCTs, systematic reviews and meta-analyses) that is relevant for clinical decision-making, and comments on assessment, therapy (training, technology, medication), and the use of technical aids as appropriate. Based on these summaries, clinical algorithms / pathways are provided and the main clinical-decision situations are portrayed. The book is invaluable for all neurorehabilitation team members, clinicians, nurses, and therapists in neurology, physical medicine and rehabilitation, and related fields. It is a World Federation for NeuroRehabilitation (WFNR) educational initiative, bridging the gap between the rapidly expanding clinical research in stroke rehabilitation and clinical practice across societies and continents. It can be used for both clinical decision-making for individuals and as well as clinical background knowledge for stroke rehabilitation service development initiatives.
Download or read book Acute Stroke Nursing written by Jane Williams and published by John Wiley & Sons. This book was released on 2013-05-07 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stroke is a medical emergency that requires immediate medical attention. With active and efficient nursing management in the initial hours after stroke onset and throughout subsequent care, effective recovery and rehabilitation is increased. Acute Stroke Nursing provides an evidence-based, practical text facilitating the provision of optimal stroke care during the primary prevention, acute and continuing care phases. This timely and comprehensive text is structured to follow the acute stroke pathway experienced by patients. It explores the causes, symptoms and effects of stroke, and provides guidance on issues such as nutrition, continence, positioning, mobility and carer support. The text also considers rehabilitation, discharge planning, palliative care and the role of the nurse within the multi-professional team. Acute Stroke Nursing is the definitive reference on acute stroke for all nurses and healthcare professionals wishing to extend their knowledge of stroke nursing. Evidence-based and practical in style, with case studies and practice examples throughout Edited and authored by recognised stroke nursing experts, clinicians and leaders in the field of nursing practice, research and education The first text to explore stroke management from UK and international perspectives, and with a nursing focus
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 Broken Movement written by John W. Krakauer and published by MIT Press. This book was released on 2022-06-07 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: An account of the neurobiology of motor recovery in the arm and hand after stroke by two experts in the field. Stroke is a leading cause of disability in adults and recovery is often difficult, with existing rehabilitation therapies largely ineffective. In Broken Movement, John Krakauer and S. Thomas Carmichael, both experts in the field, provide an account of the neurobiology of motor recovery in the arm and hand after stroke. They cover topics that range from behavior to physiology to cellular and molecular biology. Broken Movement is the only accessible single-volume work that covers motor control and motor learning as they apply to stroke recovery and combines them with motor cortical physiology and molecular biology. The authors cast a critical eye at current frameworks and practices, offer new recommendations for promoting recovery, and propose new research directions for the study of brain repair. Krakauer and Carmichael discuss such subjects as the behavioral phenotype of hand and arm paresis in human and non-human primates; the physiology and anatomy of the motor system after stroke; mechanisms of spontaneous recovery; the time course of early recovery; the challenges of chronic stroke; and pharmacological and stem cell therapies. They argue for a new approach in which patients are subjected to higher doses and intensities of rehabilitation in a more dynamic and enriching environment early after stroke. Finally they review the potential of four areas to improve motor recovery: video gaming and virtual reality, invasive brain stimulation, re-opening the sensitive period after stroke, and the application of precision medicine.
Download or read book Stroke Rehabilitation written by Leeanne M. Carey and published by Oxford University Press. This book was released on 2012-06-28 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stroke Rehabilitation: Insights from Neuroscience and Imaging informs and challenges neurologists, rehabilitation therapists, imagers, and stroke specialists to adopt more restorative and scientific approaches to stroke rehabilitation based on new evidence from neuroscience and neuroimaging literatures. The fields of cognitive neuroscience and neuroimaging are advancing rapidly and providing new insights into human behavior and learning. Similarly, improved knowledge of how the brain processes information after injury and recovers over time is providing new perspectives on what can be achieved through rehabilitation. Stroke Rehabilitation explores the potential to shape and maximize neural plastic changes in the brain after stroke from a multimodal perspective. Active skill based learning is identified as a central element of a restorative approach to rehabilitation. The evidence behind core learning principles as well as specific learning strategies that have been applied to retrain lost functions of movement, sensation, cognition and language are also discussed. Current interventions are evaluated relative to this knowledge base and examples are given of how active learning principles have been successfully applied in specific interventions. The benefits and evidence behind enriched environments is reviewed with examples of potential application in stroke rehabilitation. The capacity of adjunctive therapies, such as transcranial magnetic stimulation, to modulate receptivity of the damaged brain to benefit from behavioral interventions is also discussed in the context of this multimodal approach. Focusing on new insights from neuroscience and imaging, the book explores the potential to tailor interventions to the individual based on viable brain networks.
Download or read book Bone marrow stem cell therapy for stroke written by Kunlin Jin and published by Springer. This book was released on 2016-12-13 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers recent advances in all aspects of bone marrow-derived stem cells (BMSCs) for stroke treatment, while also providing comprehensive information on human clinical trials and animal models of stroke. In addition, it reviews the optimal conditions of transplantation for stroke therapy and potential mechanisms underlying transplanted cell-mediated functional recovery after stroke. As the first book to focus on BMSC therapy for stroke, it also discusses in depth the unique challenges of BMSCs-based therapy in this context.
Download or read book Cellular and Molecular Approaches to Regeneration and Repair written by Paul A. Lapchak and published by Springer. This book was released on 2017-11-04 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses recent advances in the field of translational stroke research. The editors have designed the book to provide new insight into the importance of regeneration and repair mechanisms for stroke victims. The editors have brought together a talented group of international stroke researchers and clinicians to contribute to this volume, which is written for students, researchers and physicians in biotechnology, neurosciences, neurology, neuroradiology and neurosurgery. Throughout the world, stroke is still a leading cause of mortality and morbidity; there are 152,000 strokes in the United Kingdom, 62,000 in Canada, and approximately 15 million people worldwide. Large communities of stroke survivors are eagerly awaiting scientific advances in translational stroke research related to regeneration and recovery of function that would offer new therapeutics for rehabilitation and regeneration utilizing novel stem cell and molecular-based approaches. This volume will allow the reader to undersnd the future of stroke treatment from its inception in the laboratory through to clinical trial design. The reader will learn about the recent advances made in these areas related to basic and applied stroke research and their translational potential. Dr. Paul A. Lapchak is Professor of Neurology and Director of Translational Research in the Departments of Neurology & Neurosurgery at Cedars-Sinai Medical Center in Los Angeles CA, USA. Dr. Lapchak is an internationally recognized expert conducting translational drug development research for ischemic and hemorrhagic stroke. Dr. John H. Zhang is Professor of Anesthesiology, Neurosurgery, Neurology, and Physiology, and Director, Center for Neuroscience Research at Loma Linda University School of Medicine, Loma Linda, CA, USA. Dr. Zhang is an internationally recognized expert working on drug development for hemorrhagic stroke.
Download or read book Subcortical Stroke written by Geoffrey Donnan and published by OUP Oxford. This book was released on 2002-04-11 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: Subcortical Stroke is a new and fully revised edition of Lacunar and Other Subcortical Infarctions (OUP, 1995). Stroke is one of the most common causes of death and subcortical stroke accounts for 20-30% of all cerebrovascular infarctions. Our understanding of stroke processes in general, and subcortical stroke in particular, has advanced considerably in recent years. Research findings from the fields of neurochemistry, imaging and genetics have provided insight and input to our understanding of this condition, and this new edition provides an opportunity to describe these advances, and to relate the findings to the clinical expression, neural mechanism, prognosis and treatment of subcortical stroke. In addition, new subcortical syndromes such as CADASIL are covered, as is subcortical haemorrhage. This book presents a comprehensive and authoritative review of the field with contributions from the leading international experts. Subcortical Stroke is for stroke physicians, neurologists and those researching cerebrovascular diseases.
Download or read book Regenerative Rehabilitation written by Sarah M. Greising and published by Springer Nature. This book was released on 2022-06-01 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: This contributed volume presents the current state of research on regenerative rehabilitation across a broad range of neuro- and musculoskeletal tissues. At its core, the primary goal of regenerative rehabilitation is to restore function after damage to bones, skeletal muscles, cartilage, ligaments/tendons, or tissues of the central and peripheral nervous systems. The authors describe the physiology of these neuro- and musculoskeletal tissue types and their inherent plasticity. The latter quality is what enables these tissues to adapt to mechanical and/or chemical cues to improve functional capacity. As a result, readers will learn how regenerative rehabilitation exploits that quality, to trigger positive changes in tissue function. Combining basic, translational, and clinical aspects of the topic, the book offers a valuable resource for both scientists and clinicians in the regenerative rehabilitation field.
Download or read book Inflammation and Stroke written by Giora Z. Feuerstein and published by Springer Science & Business Media. This book was released on 2001 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: New opportunities for stroke prevention and therapeutics: a hope from anti-inflammatory drugs?.- Inflammation in stroke and CNS trauma - experimental and clinical evidence.- Clinical evidence of inflammation as a risk factor in ischemic stroke.- Inflammation as a risk factor for stroke: evidence from experimental models.- Inflammatory and immune responses to CNS injury: beneficial and detrimental components.- Salutary effect of autoimmune T cells after central nervous system injury.- Traumatic brain injury: is head trauma an inflammatory disease?.- Cyclic activation and inactivation of brain vessels involving inflammatory mediators - implications for stroke.- Inflammatory cells in stroke.- Do leukocytes play a role in focal ischemia in the brain? An objective review of the literature.- The role of microglia in ischemic brain injury.- Inflammatory activation of brain cells by hypoxia: transcription factors and signaling pathways.- Inflammatory cytokines, interleukins and chemokines in stroke and CNS trauma.- Cytokine effects on CNS cells: implications for the pathogenesis and prevention of stroke.- Interleukin-10 in cerebral ischemia and stroke.- Chemokines and ischemic stroke.- Biphasic activity of tumor necrosis factor in stroke and brain trauma: interaction with reactive oxygen species.- Interleukin-1 and IL-1 receptor antagonist in stroke: mechanisms and potential therapeutics.- Inflammatory cytokines in CNS trauma.- Inflammation in cerebral thrombosis, angiogenesis and matrix regulation: a new perspective in stroke research and therapeutics.- Microvessel integrin expression during focal cerebral ischemia.- The inflammatory response in focal cerebral ischemia.- Chronic neuronal perturbation mediated by RAGE, a receptor for ?-sheet fibrils and S100/calgranulins.- Mediators of inflammation and blood-brain barrier permeability in cerebral ischemia.- Inflammatory proteases and oxygen radicals in stroke.- The role of metalloproteinases on blood-brain barrier breakdown after ischemic stroke.- Matrix metalloproteinases and their inhibitors in hypoxia/reoxygenation and stroke.- Extracellular matrix-degrading metalloproteinases and neuroinflammation in stroke.- Anti-oxidant strategies to treat stroke.- Inflammatory adhesion molecules, kinins, nitric oxide complement factors and lipid mediators in stroke.- Selectin-and complement-mediated mechanisms of tissue injury in stroke.- The kallikrein-kinin system in ischemic and traumatic brain injury.- Nitric oxide, nitric oxide synthases and cyclooxygenase-2 in experimental focal stroke.
Download or read book Stem Cells and Progenitor Cells in Ischemic Stroke Fashion or Future written by Thorsten R. Doeppner and published by Frontiers Media SA. This book was released on 2016-01-15 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stroke remains one of the most devastating diseases in industrialized countries. Recanalization of the occluded arterial vessel using thrombolysis is the only causal therapy available. However, thrombolysis is limited due to severe side effects and a limited time window. As such, only a minority of patients receives this kind of therapy, showing a need for new and innovative treatment strategies. Although neuroprotective drugs have been shown to be beneficial in a variety of experimental stroke models, they ultimately failed in clinical trials. Consequently, recent scientific focus has been put on modulation of post-ischemic neuroregeneration, either via stimulation of endogenous neurogenesis or via application of exogenous stem cells or progenitor cells. Neurogenesis persists within the adult brain of both rodents and primates. As such, neural progenitor cells (NPCs) are found within distinct niches like the subventricular zone (SVZ) of the lateral ventricles and the subgranular zone of the dentate gyrus. Cerebral ischemia stimulates these astrocyte-like progenitor cells, upon which NPCs proliferate and migrate towards the site of lesion. There, NPCs partly differentiate into mature neurons, without significantly being integrated into the residing neural network. Rather, the majority of new-born cells dies within the first weeks post-stroke, leaving post-ischemic neurogenesis a phenomenon of unknown biological significance. Since NPCs do not replace lost brain tissue, beneficial effects observed in some studies after either stimulated or protected neurogenesis are generally contributed to indirect effects of these new-born cells. The precise identification of appropriated cellular mediators, however, is still elusive. How do these mediators work? Are they soluble factors or maybe even vesicular structures emanating from NPCs? What are the cues that guide NPCs towards the ischemic lesion site? How can post-ischemic neurogenesis be stimulated? How can the poor survival of NPCs be increased? In order to support post-ischemic neurogenesis, a variety of research groups have focused on application of exogenous stem/progenitor cells from various tissue sources. Among these, cultivated NPCs from the SVZ and mesenchymal stem cells (MSCs) from the bone marrow are frequently administered after induction of stroke. Although neuroprotection after delivery of stem/progenitor cells has been shown in various experimental stroke models, transplanted cells are usually not integrated in the neural network. Again, the vast amount of grafted cells dies or does not reach its target despite profound neuroprotection, also suggesting indirect paracrine effects as the cause of neuroprotection. Yet, the factors being responsible for these observations are under debate and still have to be addressed. Is there any “optimal” cell type for transplantation? How can the resistance of grafted cells against a non-favorable extracellular milieu be increased? What are the molecules that are vital for interaction between grafted cells and endogenous NPCs? The present research topic seeks to answer - at least in part - some of the aforementioned questions. Although the research topic predominantly focuses on experimental studies (and reviews alike), a current outlook towards clinical relevance is given as well.
Download or read book Experimental Stroke written by Kunlin Jin and published by Bentham Science Publishers. This book was released on 2010-05-13 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This Ebook compiles the efforts of 20 experts in the field to review the latest advances in experimental stroke, with its strong emphasis on neurogenesis, angiogenesis and neuroprotection after cerebral ischemic stroke. It also provides current data for p"
Download or read book Stroke Therapy written by Marc Fisher and published by Butterworth-Heinemann. This book was released on 2001 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition keeps you up to date with the exciting new developments in treating cerebrovascular disorders. Comprehensive and practical, it surveys methods for accurate stroke diagnosis necessary for you to make appropriate therapeutic decisions.
