Download or read book Nitric Oxide and the Regulation of the Peripheral Circulation written by Philip J. Kadowitz and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitric Oxide and the Regulation of the Peripheral Circulation written by Philip J. Kadowitz and published by Birkhauser. This book was released on 2000-01-01 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Cerebral Circulation written by Marilyn J. Cipolla and published by Biota Publishing. This book was released on 2016-07-28 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Nitric Oxide and Free Radicals in Peripheral Neurotransmission written by Stanley Kalsner and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Nitric Oxide and Free Radicals in Peripheral Neurotransmission" is a welcome addition to the literature and describes current research into the role of nitric oxide in the peripheral nervous system and its associated organs. Topics covered range from general consideration of nitrergic transmission, in its broadest sense, to elaboration of our current understanding of the role of nitric oxide in transmission in individual peripheral organs, including its role as a backup, or alternate as well as chief transmitter. The influence of nitric oxide and related compounds on the more conventional modes of autonomic transmission are also considered. Aimed at students and researchers in the areas of neuroscience and physiology, "Nitric Oxide and Free Radicals in Peripheral Neurotransmission" also covers the emerging role of abnormal nitric oxide function in disease states and, where appropriate, as potential avenues of therapy.
Download or read book The Endothelium written by Michel Félétou and published by Morgan & Claypool Publishers. This book was released on 2011 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: The endothelium, a monolayer of endothelial cells, constitutes the inner cellular lining of the blood vessels (arteries, veins and capillaries) and the lymphatic system, and therefore is in direct contact with the blood/lymph and the circulating cells. The endothelium is a major player in the control of blood fluidity, platelet aggregation and vascular tone, a major actor in the regulation of immunology, inflammation and angiogenesis, and an important metabolizing and an endocrine organ. Endothelial cells controls vascular tone, and thereby blood flow, by synthesizing and releasing relaxing and contracting factors such as nitric oxide, metabolites of arachidonic acid via the cyclooxygenases, lipoxygenases and cytochrome P450 pathways, various peptides (endothelin, urotensin, CNP, adrenomedullin, etc.), adenosine, purines, reactive oxygen species and so on. Additionally, endothelial ectoenzymes are required steps in the generation of vasoactive hormones such as angiotensin II. An endothelial dysfunction linked to an imbalance in the synthesis and/or the release of these various endothelial factors may explain the initiation of cardiovascular pathologies (from hypertension to atherosclerosis) or their development and perpetuation. Table of Contents: Introduction / Multiple Functions of the Endothelial Cells / Calcium Signaling in Vascular Cells and Cell-to-Cell Communications / Endothelium-Dependent Regulation of Vascular Tone / Conclusion / References
Download or read book ABC of Hypertension written by D. Gareth Beevers and published by John Wiley & Sons. This book was released on 2010-07-15 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hypertension is a condition which affects millions of peopleworldwide and its treatment greatly reduces the risk of strokes andheart attacks. This fully revised and updated edition of the ABCof Hypertension is an established guide providing all thenon-specialist needs to know about the measurement of bloodpressure and the investigation and management of hypertensivepatients. This new edition provides comprehensively updated andrevised information on how and whom to treat. The ABC of Hypertension will prove invaluable to generalpractitioners who may be screening large numbers of patients forhypertension, as well as nurse practitioners, midwives and otherhealthcare professionals.
Download or read book Regulation of Coronary Blood Flow written by Michitoshi Inoue and published by Springer Science & Business Media. This book was released on 2013-11-09 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research centering on blood flow in the heart continues to hold an important position, especially since a better understanding of the subject may help reduce the incidence of coronary arterial disease and heart attacks. This book summarizes recent advances in the field; it is the product of fruitful cooperation among international scientists who met in Japan in May, 1990 to discuss the regulation of coronary blood flow.
Download or read book Regulation of Tissue Oxygenation Second Edition written by Roland N. Pittman and published by Biota Publishing. This book was released on 2016-08-18 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt: This presentation describes various aspects of the regulation of tissue oxygenation, including the roles of the circulatory system, respiratory system, and blood, the carrier of oxygen within these components of the cardiorespiratory system. The respiratory system takes oxygen from the atmosphere and transports it by diffusion from the air in the alveoli to the blood flowing through the pulmonary capillaries. The cardiovascular system then moves the oxygenated blood from the heart to the microcirculation of the various organs by convection, where oxygen is released from hemoglobin in the red blood cells and moves to the parenchymal cells of each tissue by diffusion. Oxygen that has diffused into cells is then utilized in the mitochondria to produce adenosine triphosphate (ATP), the energy currency of all cells. The mitochondria are able to produce ATP until the oxygen tension or PO2 on the cell surface falls to a critical level of about 4–5 mm Hg. Thus, in order to meet the energetic needs of cells, it is important to maintain a continuous supply of oxygen to the mitochondria at or above the critical PO2 . In order to accomplish this desired outcome, the cardiorespiratory system, including the blood, must be capable of regulation to ensure survival of all tissues under a wide range of circumstances. The purpose of this presentation is to provide basic information about the operation and regulation of the cardiovascular and respiratory systems, as well as the properties of the blood and parenchymal cells, so that a fundamental understanding of the regulation of tissue oxygenation is achieved.
Download or read book Impact of Nitric Oxide in the Regulation of Blood Flow in the Microcirculation written by Patrick L. Kirby and published by . This book was released on 2015 with total page 854 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitric oxide (NO) is historically known as a vasodilator. A clear role for NO in metabolic autoregulation within the microcirculation and its relationship to both blood flow and local O2 concentrations has yet to have been established. As NO production from endothelial cells is limited under hypoxic conditions, increased vascular tone and a subsequent decrease in vascular diameter develop. This decrease in vascular diameter is expected to trigger a decrease in the amount of O2 transported to the surrounding tissue. In terms of the local flow mediated response, this decrease in vessel diameter will also lead to an increase in hydraulic resistance, which should theoretically lead to a decrease in blood flow through the vasculature (and thereby reducing O2 transport to the tissue). Experimental studies have shown that at bifurcations an unequal distribution of red blood cells will flow into the larger of the two daughter vessels, in a fashion not proportional to the bulk fluid distribution in the two daughter branches(1). Therefore, in relation to NO, a decrease in vessel diameter will lead to a decrease in red blood cell flux to the hypoxic tissue. This decrease in red blood cells could be beneficial in terms of CNO by reducing the presence of NO scavangers, thereby increasing CNO in and around the vessel wall and promoting vessel dilation. Yet, this increase in blood flow will also immediately allow for a greater influx of red blood cells into the region and lead to a greater scavenging of NO. Theoretically this would lead to a decrease in vessel diameter, and make this means of autoregulatory control unstable. It is the desire of this work to explore a role of NO in the autoregulatory control of arteriole diameter and subsequent blood flow to connected vessels. Ideally a pathway is sought, which would allow for a steady increase in CNO around a resistive vessel until relationship stable equilibrium between the vasculature and its surrounding tissue is resumed To define the role of NO in the metabolic signaling leading to the autoregulation of local blood transport, this study computationally examines the relationship between NO and O2 within a vascular network. Specifically, this work explores if a decrease in local PO2 can lead to an increase in local CNO around the arteriole wall. In addition, this thesis models the relationship between CNO and changes in the vessel diameter to determine their influence on the resultant distribution of blood. Finally, this work examines the pathway most commonly associated with NO production; the shear mediated NO production by endothelial cells. A fuller understanding of the mechanisms of NO production and its relationship to blood transport within the vasculature is expected to provide insight into the metabolic auto-regulatory system and future potential therapeutic avenues for metabolic dysfunction.
Download or read book Skeletal Muscle Circulation written by Ronald J. Korthuis and published by Morgan & Claypool Publishers. This book was released on 2011 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this treatise is to summarize the current understanding of the mechanisms for blood flow control to skeletal muscle under resting conditions, how perfusion is elevated (exercise hyperemia) to meet the increased demand for oxygen and other substrates during exercise, mechanisms underlying the beneficial effects of regular physical activity on cardiovascular health, the regulation of transcapillary fluid filtration and protein flux across the microvascular exchange vessels, and the role of changes in the skeletal muscle circulation in pathologic states. Skeletal muscle is unique among organs in that its blood flow can change over a remarkably large range. Compared to blood flow at rest, muscle blood flow can increase by more than 20-fold on average during intense exercise, while perfusion of certain individual white muscles or portions of those muscles can increase by as much as 80-fold. This is compared to maximal increases of 4- to 6-fold in the coronary circulation during exercise. These increases in muscle perfusion are required to meet the enormous demands for oxygen and nutrients by the active muscles. Because of its large mass and the fact that skeletal muscles receive 25% of the cardiac output at rest, sympathetically mediated vasoconstriction in vessels supplying this tissue allows central hemodynamic variables (e.g., blood pressure) to be spared during stresses such as hypovolemic shock. Sympathetic vasoconstriction in skeletal muscle in such pathologic conditions also effectively shunts blood flow away from muscles to tissues that are more sensitive to reductions in their blood supply that might otherwise occur. Again, because of its large mass and percentage of cardiac output directed to skeletal muscle, alterations in blood vessel structure and function with chronic disease (e.g., hypertension) contribute significantly to the pathology of such disorders. Alterations in skeletal muscle vascular resistance and/or in the exchange properties of this vascular bed also modify transcapillary fluid filtration and solute movement across the microvascular barrier to influence muscle function and contribute to disease pathology. Finally, it is clear that exercise training induces an adaptive transformation to a protected phenotype in the vasculature supplying skeletal muscle and other tissues to promote overall cardiovascular health. Table of Contents: Introduction / Anatomy of Skeletal Muscle and Its Vascular Supply / Regulation of Vascular Tone in Skeletal Muscle / Exercise Hyperemia and Regulation of Tissue Oxygenation During Muscular Activity / Microvascular Fluid and Solute Exchange in Skeletal Muscle / Skeletal Muscle Circulation in Aging and Disease States: Protective Effects of Exercise / References
Download or read book Nitric Oxide Synthase written by Seyed Soheil Saeedi Saravi and published by BoD – Books on Demand. This book was released on 2017-05-17 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitric Oxide Synthase - Simple Enzyme-Complex Roles provides information on nitric oxide synthase, a biomolecule of key importance for the different biological systems, including central and peripheral nervous, cardiovascular, and reproductive systems. With recent links to the role of nitric oxide in the reactions that can impact cell signaling, and discoveries surrounding the complex role of nitric oxide synthase that have increased research attention across the fields of cell and molecular biology, physiology, pharmacology, toxicology, neuroscience, cardiology, urology, and endocrinology, this book tries to provide a comprehensive overview of biology/pathobiology of nitric oxide synthases and a perspective from possible therapeutic indication of the enzyme inhibitors.
Download or read book Organic Nitrates written by P. Needleman and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitroglycerin and other organic nitrates have been used for over a century in the treatment of angina pectoris. Millions of patients, throughout the world, have placed nitroglycerin tablets under the tongue and have experienced rapid and dramatic relief from the chest pain that frequently occurs as a manifestation of disease of the coronary arteries. The empirical observation of the safe use of nitrates for tile alleviation of the symptoms of angina have led to their widespread medical acceptance. The use of organic nitrates preceded any knowledge of their mechanism of action or their ultimate metabolic fate. Thus, more simply stated, although sub lingual nitrates helped the patients, little was known concerning what these drugs do to the body or what the body does to the drugs. A substantial number of investigators have focused on these questions especially during the last two decades. We now have considerably more insight into the pathways of degradation of organic nitrates and the relationship of the metabolic processes to the biological action of these agents. Similarly, considerable effort has been expended in understanding the mechanism of action of these agents directly on vascular smooth muscle and on cardiac work and performance. Finally, there is a more substantive understanding of the physiology of the coronary circulation as well as the" pathophysiologic manifestations of myocardial disease.
Download or read book Ross Wilson Anatomy and Physiology in Health and Illness E Book written by Anne Waugh and published by Elsevier Health Sciences. This book was released on 2018-07-12 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: The new edition of the hugely successful Ross and Wilson Anatomy & Physiology in Health and Illness continues to bring its readers the core essentials of human biology presented in a clear and straightforward manner. Fully updated throughout, the book now comes with enhanced learning features including helpful revision questions and an all new art programme to help make learning even easier. The 13th edition retains its popular website, which contains a wide range of ‘critical thinking’ exercises as well as new animations, an audio-glossary, the unique Body Spectrum© online colouring and self-test program, and helpful weblinks. Ross and Wilson Anatomy & Physiology in Health and Illness will be of particular help to readers new to the subject area, those returning to study after a period of absence, and for anyone whose first language isn’t English. Latest edition of the world’s most popular textbook on basic human anatomy and physiology with over 1.5 million copies sold worldwide Clear, no nonsense writing style helps make learning easy Accompanying website contains animations, audio-glossary, case studies and other self-assessment material, the unique Body Spectrum© online colouring and self-test software, and helpful weblinks Includes basic pathology and pathophysiology of important diseases and disorders Contains helpful learning features such as Learning Outcomes boxes, colour coding and design icons together with a stunning illustration and photography collection Contains clear explanations of common prefixes, suffixes and roots, with helpful examples from the text, plus a glossary and an appendix of normal biological values. Particularly valuable for students who are completely new to the subject, or returning to study after a period of absence, and for anyone whose first language is not English All new illustration programme brings the book right up-to-date for today’s student Helpful ‘Spot Check’ questions at the end of each topic to monitor progress Fully updated throughout with the latest information on common and/or life threatening diseases and disorders Review and Revise end-of-chapter exercises assist with reader understanding and recall Over 150 animations – many of them newly created – help clarify underlying scientific and physiological principles and make learning fun
Download or read book Dynamic Aspects of Dental Pulp written by Reizo Inoki and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a circumspective overview and update of the present existing knowledge of the biology, chemistry and pathophysiology of the dental pulp. It details numerous observations of a group of highly specialized investigators who have united in the common purpose of presenting their observations for the benefit of clinicians, teachers, researchers and students. Fortunately, the dental literature presents abundant research findings about pulp biology and the pulp's responses to various stimuli. This abundance has resulted in an increased interest and expansion of research on this subject. For example, publications abound on the response of pulp tissue to various medications and to a variety of types of dental materials which may be placed near to or at some distance from the pulp through the medium of dentine. One of the reasons the pulp is of such interest is that it not only provides the vitality to the teeth but also produces the dentine - both the primary and secondary, as well as reparative. The latter-type dentine is a result of the pulp's functions in response to disease as the former dentine is in response to health. As an example, some investigators have reported the effects of cutting of dentine and the placement of restorations in dentine which in turn reflect changes on the pulp tissue. These reports have raised a number of questions, which in turn have created a need for answers.
Download or read book Stress and Hypertension written by Kevin T. Larkin and published by Yale University Press. This book was released on 2008-10-01 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Does living a stress-filled life lead to elevated blood pressure? And if so, do strategies to better manage stress effectively lower blood pressure? In this authoritative and comprehensive book, Kevin T. Larkin examines more than a half-century of empirical evidence obtained to test the common assumption that stress is associated with the onset and maintenance of essential hypertension (high blood pressure). While the research confirms that stress does play a role in the exacerbation of essential hypertension, numerous other factors must also be considered, among them obesity, exercise, and smoking, as well as demographic, constitutional, and psychological concerns. The author discusses the effectiveness of strategies developed to manage stress and thereby lower blood pressure and concludes with suggestions and directions for further study.
Download or read book Novel Prospects in Oxidative and Nitrosative Stress written by Pinar Atukeren and published by BoD – Books on Demand. This book was released on 2018-05-09 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oxidative stress plays a crucial role in the pathophysiology of various diseases when there is a disruption of the intracellular redox balance and the homeostatic balance between cellular oxidants and antioxidants. Reactive oxygen species (ROS) and reactive nitrogen species (RNS) react with molecular targets including proteins, lipids, and nucleic acids contributing to mitochondrial injury and cellular dysfunction. This book intends to provide the readers with an extensive overview of the novel approaches and prospects based on oxidative and nitrosative stress in the pathophysiology of various diseases and in the current treatment strategies with antioxidants.
Download or read book Lippincott Illustrated Reviews Physiology written by Robin R. Preston and published by Lippincott Williams & Wilkins. This book was released on 2018-12-26 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: Publisher's Note: Products purchased from 3rd Party sellers are not guaranteed by the Publisher for quality, authenticity, or access to any online entitlements included with the product. Enhanced by a new chapter, new illustrations, and new Q&As, LIppincott® Illustrated Reviews: Physiology, Second Edition brings physiology clearly into focus, telling the story of who we are; how we live; and, ultimately, how we die. By first identifying organ function and then showing how cells and tissues are designed to fulfill that function, this resource decodes physiology like no other text or review book. Tailored for ease of use and fast content absorption, the book’s outline format, visionary artwork, clinical applications, and unit review questions help students master the most essential concepts in physiology, making it perfect for classroom learning and test and boards preparation.
