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Author: Marilyn J. Cipolla Publisher: Biota Publishing ISBN: 1615047239 Category : Medical Languages : en Pages : 82
Book Description
This e-book will review special features of the cerebral circulation and how they contribute to the physiology of the brain. It describes structural and functional properties of the cerebral circulation that are unique to the brain, an organ with high metabolic demands and the need for tight water and ion homeostasis. Autoregulation is pronounced in the brain, with myogenic, metabolic and neurogenic mechanisms contributing to maintain relatively constant blood flow during both increases and decreases in pressure. In addition, unlike peripheral organs where the majority of vascular resistance resides in small arteries and arterioles, large extracranial and intracranial arteries contribute significantly to vascular resistance in the brain. The prominent role of large arteries in cerebrovascular resistance helps maintain blood flow and protect downstream vessels during changes in perfusion pressure. The cerebral endothelium is also unique in that its barrier properties are in some way more like epithelium than endothelium in the periphery. The cerebral endothelium, known as the blood-brain barrier, has specialized tight junctions that do not allow ions to pass freely and has very low hydraulic conductivity and transcellular transport. This special configuration modifies Starling's forces in the brain microcirculation such that ions retained in the vascular lumen oppose water movement due to hydrostatic pressure. Tight water regulation is necessary in the brain because it has limited capacity for expansion within the skull. Increased intracranial pressure due to vasogenic edema can cause severe neurologic complications and death.
Author: Marilyn J. Cipolla Publisher: Biota Publishing ISBN: 1615047239 Category : Medical Languages : en Pages : 82
Book Description
This e-book will review special features of the cerebral circulation and how they contribute to the physiology of the brain. It describes structural and functional properties of the cerebral circulation that are unique to the brain, an organ with high metabolic demands and the need for tight water and ion homeostasis. Autoregulation is pronounced in the brain, with myogenic, metabolic and neurogenic mechanisms contributing to maintain relatively constant blood flow during both increases and decreases in pressure. In addition, unlike peripheral organs where the majority of vascular resistance resides in small arteries and arterioles, large extracranial and intracranial arteries contribute significantly to vascular resistance in the brain. The prominent role of large arteries in cerebrovascular resistance helps maintain blood flow and protect downstream vessels during changes in perfusion pressure. The cerebral endothelium is also unique in that its barrier properties are in some way more like epithelium than endothelium in the periphery. The cerebral endothelium, known as the blood-brain barrier, has specialized tight junctions that do not allow ions to pass freely and has very low hydraulic conductivity and transcellular transport. This special configuration modifies Starling's forces in the brain microcirculation such that ions retained in the vascular lumen oppose water movement due to hydrostatic pressure. Tight water regulation is necessary in the brain because it has limited capacity for expansion within the skull. Increased intracranial pressure due to vasogenic edema can cause severe neurologic complications and death.
Author: Doychin N. Angelov Publisher: Springer Science & Business Media ISBN: 3642722512 Category : Medical Languages : en Pages : 141
Book Description
Following an exhaustive literature review on the global issue of intracerebral presentation of antigen, this monograph summarizes results from voluminous work to establish which indigenous cerebral cells might present (auto)antigen to the immune system and thus initiate an (auto)immune reaction. Employing the combination of (a) a lesion model in which neuronal degeneration and neuronophagia are caused without disruption of the blood--brain barrier, (b) stable labeling of the neuronophages via phagocytosis of the permanent nontoxic fluorescent marker Fluoro-Gold from preloaded neurons, and (c) immunocytochemical identification of all FG-labeled brain neuronophages, the authors provide evidence that the only cells in the rat CNS which can be regarded as the resident antigen presenting cells of the brain are perivascular cells.
Author: Louis R. Caplan Publisher: Academic Press ISBN: 0080539513 Category : Science Languages : en Pages : 855
Book Description
Primer on Cerebrovascular Diseases is a handy reference source for scientists, students, and physicians needing reliable, up-to-date information on basic mechanisms, physiology, pathophysiology, and medical issues related to brain vasculature. The book consists of short, specific chapters written by international experts on cerebral vasculature, and presents the information in a comprehensive and easily accessible manner. The book also contains valuable information on practical applications of basic research. - Presents topics in a comprehensive and accessible format - Written by international authorities on cerebral vasculature - Provides practical applications for researchers
Author: D. Neil Granger Publisher: Morgan & Claypool Publishers ISBN: 1615041656 Category : Medical Languages : en Pages : 99
Book Description
The microcirculation is highly responsive to, and a vital participant in, the inflammatory response. All segments of the microvasculature (arterioles, capillaries, and venules) exhibit characteristic phenotypic changes during inflammation that appear to be directed toward enhancing the delivery of inflammatory cells to the injured/infected tissue, isolating the region from healthy tissue and the systemic circulation, and setting the stage for tissue repair and regeneration. The best characterized responses of the microcirculation to inflammation include impaired vasomotor function, reduced capillary perfusion, adhesion of leukocytes and platelets, activation of the coagulation cascade, and enhanced thrombosis, increased vascular permeability, and an increase in the rate of proliferation of blood and lymphatic vessels. A variety of cells that normally circulate in blood (leukocytes, platelets) or reside within the vessel wall (endothelial cells, pericytes) or in the perivascular space (mast cells, macrophages) are activated in response to inflammation. The activation products and chemical mediators released from these cells act through different well-characterized signaling pathways to induce the phenotypic changes in microvessel function that accompany inflammation. Drugs that target a specific microvascular response to inflammation, such as leukocyte-endothelial cell adhesion or angiogenesis, have shown promise in both the preclinical and clinical studies of inflammatory disease. Future research efforts in this area will likely identify new avenues for therapeutic intervention in inflammation. Table of Contents: Introduction / Historical Perspectives / Anatomical Considerations / Impaired Vasomotor Responses / Capillary Perfusion / Angiogenesis / Leukocyte-Endothelial Cell Adhesion / Platelet-Vessel Wall Interactions / Coagulation and Thrombosis / Endothelial Barrier Dysfunction / Epilogue / References
Author: Saul Suster Publisher: Elsevier Health Sciences ISBN: 0323443052 Category : Medical Languages : en Pages : 949
Book Description
Part of the highly regarded Diagnostic Pathology series, this updated volume is a visually stunning, easy-to-use reference covering all aspects of thoracic pathology. Outstanding images make this an invaluable diagnostic aid for every practicing pathologist, resident, or fellow. This second edition incorporates the most recent clinical, pathological, histological, and molecular knowledge in the field to provide a comprehensive overview of all key issues relevant to today’s practice. Unsurpassed visual coverage, with carefully annotated gross pathology, histopathology, special stains, and correlative radiologic images that provide clinically and diagnostically important information. Designed to help you identify crucial elements of each diagnosis along with associated differential diagnoses and pitfalls to more quickly resolve problems during routine sign out of cases. Time-saving reference features include bulleted text, a variety of test data tables, key facts in each chapter, annotated images, and an extensive index. Thoroughly updated content throughout, reflecting new WHO classifications of adenocarcinoma of the lung and a proliferation of molecular markers. New coverage of targeted therapies in molecular testing that determine why, when, and where these precisely classified lung cancers are found and their biologic behavior.
Author: Frederik Barkhof Publisher: Springer Science & Business Media ISBN: 3642008186 Category : Medical Languages : en Pages : 295
Book Description
This up-to-date, superbly illustrated book is a practical guide to the effective use of neuroimaging in the patient with cognitive decline. It sets out the key clinical and imaging features of the various causes of dementia and directs the reader from clinical presentation to neuroimaging and on to an accurate diagnosis whenever possible. After an introductory chapter on the clinical background, the available "toolbox" of structural and functional neuroimaging techniques is reviewed in detail, including CT, MRI and advanced MR techniques, SPECT and PET, and image analysis methods. The imaging findings in normal ageing are then discussed, followed by a series of chapters that carefully present and analyze the key findings in patients with dementias. Throughout, a practical approach is adopted, geared specifically to the needs of clinicians (neurologists, radiologists, psychiatrists, geriatricians) working in the field of dementia, for whom this book will prove an invaluable resource.
Author: Alexander Birbrair Publisher: Springer ISBN: 3030110931 Category : Science Languages : en Pages : 283
Book Description
The present book is an attempt to describe the most recent developments in the area of pericyte biology which is one of the emergent hot topics in the field of molecular and cellular biology today. Here, we present a selected collection of thirteen detailed chapters on what we know so far about pericytes in distinct organs in physiological and pathological conditions. Further, it provides an update on the most novel functions attributed to these cells and will introduce a newer generation of researchers and scientists to the importance of these cells, ranging from their discovery in different organs through current state-of-the-science. It will be invaluable for both advanced cell biology students as well as researchers in cell biology, stem cells and vascular research. This volume explores pericytes' physiologic roles in different tissues, ranging from the pancreas, lungs and liver through skeletal muscle, gut, retina and more. Together with its companion volumes Pericyte Biology in Disease and Pericyte Biology – Novel Concepts, Pericyte Biology in Different Organs presents a comprehensive update on the latest information and most novel functions attributed to pericytes. To those researchers newer to this area, it will be useful to have the background information on these cells' unique history. It will be invaluable for both advanced cell biology students as well as researchers in cell biology, stem cells and researchers or clinicians involved with specific organs.
Author: Gert Fricker Publisher: Springer ISBN: 3662437872 Category : Science Languages : en Pages : 169
Book Description
Medicinal chemistry is both science and art. The science of medicinal chemistry offers mankind one of its best hopes for improving the quality of life. The art of medicinal chemistry continues to challenge its practitioners with the need for both intuition and experience to discover new drugs. Hence sharing the experience of drug research is uniquely beneficial to the field of medicinal chemistry. Drug research requires interdisciplinary team-work at the interface between chemistry, biology and medicine. Therefore, the topic-related series Topics in Medicinal Chemistry covers all relevant aspects of drug research, e.g. pathobiochemistry of diseases, identification and validation of (emerging) drug targets, structural biology, drugability of targets, drug design approaches, chemogenomics, synthetic chemistry including combinatorial methods, bioorganic chemistry, natural compounds, high-throughput screening, pharmacological in vitro and in vivo investigations, drug-receptor interactions on the molecular level, structure-activity relationships, drug absorption, distribution, metabolism, elimination, toxicology and pharmacogenomics. In general, special volumes are edited by well known guest editors.
Author: Marilyn J. Cipolla
Author: Marilyn J. Cipolla
Author: Doychin N. Angelov
Author: Leonardo Pantoni
Author: Louis R. Caplan
Author: D. Neil Granger
Author: George J. Siegel
Author: Saul Suster
Author: Frederik Barkhof
Author: Alexander Birbrair
Author: Gert Fricker