The Cerebral Circulation PDF Download
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Author: Marilyn J. Cipolla
Publisher: Biota Publishing
ISBN: 1615047239
Category : Medical
Languages : en
Pages : 82
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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
Get Book Here
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: Tatiana Barichello
Publisher: Humana Press
ISBN: 9781493989454
Category : Medical
Languages : en
Pages : 367
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Book Description
This volume focuses on experimental research with applicable models to study physiology, biochemistry, and molecular biology of the blood-brain barrier (BBB). This book is organized into six parts: Part One is an overview of the physiology of BBB; Part Two explores in vitro cell models to study the BBB; Part Three discusses techniques in vivo and ex vivo models to evaluate BBB in Drosophila melanogaster, Zebrafish, and rodents; Part Four looks at permeability, influx, efflux transportation, and drug delivery through the BBB; Part Five talks about various invasive and non-invasive imaging techniques to study BBB; and Part Six describes how molecular biomarkers are used to look at the integrity or dysfunction of the BBB. In Neuromethods series style, chapters include the kind of detail and key advice from the specialists needed to get successful results in your laboratory. Cutting-edge and thorough, Blood-Brain Barrier is a valuable resource to aid both novice and experienced investigators with performing experiments using new and classic translational approaches.
Author: Robert Vink
Publisher: University of Adelaide Press
ISBN: 0987073052
Category : Medical
Languages : en
Pages : 354
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Book Description
The brain is the most complex organ in our body. Indeed, it is perhaps the most complex structure we have ever encountered in nature. Both structurally and functionally, there are many peculiarities that differentiate the brain from all other organs. The brain is our connection to the world around us and by governing nervous system and higher function, any disturbance induces severe neurological and psychiatric disorders that can have a devastating effect on quality of life. Our understanding of the physiology and biochemistry of the brain has improved dramatically in the last two decades. In particular, the critical role of cations, including magnesium, has become evident, even if incompletely understood at a mechanistic level. The exact role and regulation of magnesium, in particular, remains elusive, largely because intracellular levels are so difficult to routinely quantify. Nonetheless, the importance of magnesium to normal central nervous system activity is self-evident given the complicated homeostatic mechanisms that maintain the concentration of this cation within strict limits essential for normal physiology and metabolism. There is also considerable accumulating evidence to suggest alterations to some brain functions in both normal and pathological conditions may be linked to alterations in local magnesium concentration. This book, containing chapters written by some of the foremost experts in the field of magnesium research, brings together the latest in experimental and clinical magnesium research as it relates to the central nervous system. It offers a complete and updated view of magnesiums involvement in central nervous system function and in so doing, brings together two main pillars of contemporary neuroscience research, namely providing an explanation for the molecular mechanisms involved in brain function, and emphasizing the connections between the molecular changes and behavior. It is the untiring efforts of those magnesium researchers who have dedicated their lives to unraveling the mysteries of magnesiums role in biological systems that has inspired the collation of this volume of work.
Author: Gert Fricker
Publisher: Springer
ISBN: 3662437872
Category : Science
Languages : en
Pages : 169
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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: Ruth Lyck
Publisher: Springer
ISBN: 9783319833088
Category : Medical
Languages : en
Pages : 0
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Book Description
This PIR volume presents a comprehensive collection of reviews that focus on the role of the blood-brain barrier (BBB) during steady-state and inflamed conditions. Within the central nervous system (CNS) the constantly changing bloodstream is strictly separated from the CNS parenchyma by the BBB. However, viruses, bacteria, parasites and auto-aggressive immune cells can penetrate the barrier and significantly contribute to CNS inflammation. The BBB can actively contribute to neuroinflammation by presentation of chemokines, expression of cell adhesion molecules and alterations of barrier properties. As such, understanding the role of the BBB under healthy and pathological conditions is essential to the development of new drugs to efficiently combat inflammatory diseases of the CNS.
Author: Daniel Laskowitz
Publisher: CRC Press
ISBN: 1498766579
Category : Medical
Languages : en
Pages : 388
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Book Description
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
Author: Michael W.B. Bradbury
Publisher: Springer Science & Business Media
ISBN: 3642768946
Category : Medical
Languages : en
Pages : 562
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Book Description
The blood-brain barrier is still not completely understood and therefore the subject of fascinating study. How are endogenous substances transported through the blood-brain barrier? What are the known therapeutic and toxic agents? How are they transported across cerebral microvessels? The discussion of these and other questions with far-reaching consequences for all neuroscientists can be found in this volume. This authoritative and up-to-date review of the blood-brain barrier gives a proper understanding of the topic. The experimental principles, the results of very recent research, as well as the implications that experimental research has for clinical treatment are thoroughly covered. Information is given on: - new findings based on classical physiological and pharmacological techniques, - results obtained from brain capillaries in vitro and in culture, - results obtained from the new scanning techniques (PET and MRI), - the immunology of the blood-brain barrier, - trace metal transport, - the pathological breakdown of the barrier and - the modification of drugs to increase their entry into the brain. Here is a source of information that is invaluable to specialists concerned with basic research in the neurosciences, with the design of neuropharmacological agents, with the radiological diagnosis of cerebral pathology or with the treatment of cerebral lesions!
Author: Hugh Davson
Publisher: CRC Press
ISBN: 9780849344725
Category : Science
Languages : en
Pages : 832
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Book Description
This text/reference uses 574 figures and illustrations to help explain the relationships between blood and the cerebrospinal fluid (CSF) and central nervous system (CNS). The authors focus on the interaction of these fluids and the relative importance of the transport mechanisms of hormones from blood to nervous tissue. Carrier-mediated transport of many neuroactive peptides is discussed. Special aspects of the blood-brain barrier are covered in detail. An entire chapter is devoted to the comparative physiology of the CSF and the brain barriers. Physiologists in all fields will have an interest in the updated theories covered in this book.
Author: Allan Siegel
Publisher: Springer Science & Business Media
ISBN: 0387848517
Category : Medical
Languages : en
Pages : 437
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Book Description
For many years, the immune and central nervous systems were thought to function independently with little or no interaction between the two. This view has und- gone dramatic changes over the past three decades. Indeed, we now know that there exists various feedback loops between the brain and immune systems that impact signi cantly upon different behavioral processes, including normal behavior and mental disorders. Pioneering efforts in generating this change were initiated by a number of early investigators. Included were those whose efforts were directed at establishing neuroimmune connections as well as others whose research focused upon the relationship between immunity, cytokines, and behavior. This book brings together outstanding scientists and clinicians who have made major contributions to the rapidly developing eld investigating the relationship between immunity and behavior. The book is divided into three parts. The rst part describes pathways by which the brain and immune systems communicate and int- act with each other. In the chapter “Cytokines and the Blood–Brain Barrier” p- vides insight into interactions between the blood–brain barrier and cytokines. Such interactions underlie basic communication between the immune system and brain that are present in normal as well as in disease conditions. In the chapter “Neu- chemical and Endocrine Responses to Immune Activation: The Role of Cytokines,” the neurochemical and endocrine consequences of immune challenge and cytokine administration on central neurotransmitter activity are discussed.
Author: Roy Bicknell
Publisher: Cambridge University Press
ISBN: 9780521559904
Category : Science
Languages : en
Pages : 156
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Book Description
The aim of the Handbooks in Practical Animal Cell Biology is to provide practical workbooks for those involved in primary cell culture. Each volume addresses a different cell lineage, and contains an introductory section followed by individual chapters on the culture of specific differentiated cell types. The authors of each chapter are leading researchers in their fields and use their first-hand experience to present reliable techniques in a clear and thorough manner. Endothelial Cell Culture contains chapters on endothelial cells derived from 1) lung, 2) bone marrow, 3) brain, 4) mammary glands, 5) skin, 6) adipose tissue, 7) female reproductive system, and 8) synovium.
