Download or read book Endothelial Dysfunction and Microvascular Injury in Life Threatening Diseases written by Kevin Barker and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Endothelial activation and dysfunction contributes to multiple life-threatening disorders including malaria, sepsis, acute lung injury (ALI) and viral haemorrhagic fevers. It represents a common pathway of injury leading to microvascular leak, multi-organ failure, mortality and long-term deficits in survivors. The detection of circulating biomarkers of the activated endothelium may enable the early detection and triage those at risk of severe disease, improving clinical outcome and prognosis. Here we investigated three life-threatening diseases (high altitude pulmonary oedema (HAPE), cerebral malaria and malaria-induced ALI) with a focus on the Ang/Tie2 pathway and its role in endothelial activation and microvascular leak. In each example, we defined the relationship of the Ang/Tie2 axis to disease pathobiology and where possible, explored mechanism and interventions based on genetic and pharmacological strategies. In a prospective case-control study of climbers developing altitude illness, we investigated mediators of endothelial activation, vascular tone and cell stress. Specifically, we show that the endothelial activation markers (endothelin-1 and soluble kinase insert domain receptor) are correlated with HAPE. We next investigated these pathways in malaria-induced cerebral microvascular injury, using in vivo and ex vivo approaches. Specifically, we show that genetic deletion of microRNA-155 enhances endothelial quiescence, blood-brain barrier integrity and survival. We suggest that these observations are likely associated with Ang/Tie2 axis dysfunction. Moreover, anti-miR-155 preserved endothelial integrity and reduced microvascular leak, induced by patient sera. Finally, we investigated these pathways in malaria-induced ALI, using sera from children with malaria-induced respiratory distress, and pre-clinical animal models. Specifically, we show that an association with Ang/Tie2 axis dysregulation and pharmacological activation of the Ang/Tie2 axis in vivo improves survival and decreases pulmonary vascular leak. In summary, these studies suggest common mediators of endothelial activation and dysfunction that play a critical role in maintaining vascular integrity, reducing microvascular leak and improving outcome from multiple different insults.
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 Coronary Microvascular Dysfunction written by Filippo Crea and published by Springer Science & Business Media. This book was released on 2013-08-15 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past two decades a number of studies have shown that abnormalities in the function and structure of coronary microcirculation can be detected in several cardiovascular diseases. On the basis of the clinical setting in which it occurs, coronary microvascular dysfunction (CMD) can be classified into four types: CMD in the absence of any other cardiac disease; CMD in myocardial diseases; CMD in obstructive epicardial coronary artery disease; and iatrogenic CMD. In some instances CMD represents an epiphenomenon, whereas in others it represents an important marker of risk or may contribute to the pathogenesis of myocardial ischemia, thus becoming a possible therapeutic target. This book provides an update on coronary physiology and a systematic assessment of microvascular abnormalities in cardiovascular diseases, in the hope that it will assist clinicians in prevention, detection and management of CMD in their everyday activity.
Download or read book Regulation of Endothelial Barrier Function written by Sarah Y. Yuan and published by Biota Publishing. This book was released on 2011-02-01 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: The vascular endothelium lining the inner surface of blood vessels serves as the first interface for circulating blood components to interact with cells of the vascular wall and surrounding extravascular tissues. In addition to regulating blood delivery and perfusion, a major function of vascular endothelia, especially those in exchange microvessels (capillaries and postcapillary venules), is to provide a semipermeable barrier that controls blood–tissue exchange of fluids, nutrients, and metabolic wastes while preventing pathogens or harmful materials in the circulation from entering into tissues. During host defense against infection or tissue injury, endothelial barrier dysfunction occurs as a consequence as well as cause of inflammatory responses. Plasma leakage disturbs fluid homeostasis and impairs tissue oxygenation, a pathophysiological process contributing to multiple organ dysfunction associated with trauma, infection, metabolic disorder, and other forms of disease. In this book, we provide an updated overview of microvascular endothelial barrier structure and function in health and disease. The discussion is initiated with the basic physiological principles of fluid and solute transport across microvascular endothelium, followed by detailed information on endothelial cell–cell and cell–matrix interactions and the experimental techniques that are employed to measure endothelial permeability. Further discussion focuses on the signaling and molecular mechanisms of endothelial barrier responses to various stimulations or drugs, as well as their relevance to several common clinical conditions. Taken together, this book provides a comprehensive analysis of microvascular endothelial cell and molecular pathophysiology. Such information will assist scientists and clinicians in advanced basic and clinical research for improved health care.
Download or read book Vascular Responses to Pathogens written by Felicity N.E. Gavins and published by Academic Press. This book was released on 2015-10-31 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vascular Responses to Pathogens focuses on the growing research from leaders in the field for both the short and long-term impact of pathogens on the vasculature. It discusses various organisms, including bacteria, parasites, and viruses, and their role in key events leading to vascular disease. Formatted to discuss the topic of the interaction of pathogens with the vascular rather than individual diseases described separately, this reference demonstrates that common mechanisms are at play in many different diseases because they have a similar context, their vasculature. This all-inclusive reference book is a must-have tool for researchers and practicing clinicians in the areas of vascular biology, microvasculature, cardiology, and infectious disease. - Covers a wide spectrum of organisms and provides analysis of pathogens and current therapeutic strategies in the context of their vasculature - Provides detailed perspectives on key components contributing to vascular pathogens from leaders in the field - Interfaces between both vascular biology and microbiology by encompassing information on how pathogens affect both macro and microvasculature - Includes coverage of the clinical aspects of sepsis and current therapeutic strategies and anti-sepsis drugs
Download or read book Trauma Induced Coagulopathy written by Hunter B. Moore and published by Springer Nature. This book was released on 2020-10-12 with total page 802 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first edition of this publication was aimed at defining the current concepts of trauma induced coagulopathy by critically analyzing the most up-to-date studies from a clinical and basic science perspective. It served as a reference source for any clinician interested in reviewing the pathophysiology, diagnosis, and management of the coagulopathic trauma patient, and the data that supports it. By meticulously describing the methodology of most traditional as well as state of the art coagulation assays the reader is provided with a full understanding of the tests that are used to study trauma induced coagulopathy. With the growing interest in understanding and managing coagulation in trauma, this second edition has been expanded to 46 chapters from its original 35 to incorporate the massive global efforts in understanding, diagnosing, and treating trauma induced coagulopathy. The evolving use of blood products as well as recently introduced hemostatic medications is reviewed in detail. The text provides therapeutic strategies to treat specific coagulation abnormalities following severe injury, which goes beyond the first edition that largely was based on describing the mechanisms causing coagulation abnormalities. Trauma Induced Coagulopathy 2nd Edition is a valuable reference to clinicians that are faced with specific clinical challenges when managing coagulopathy.
Download or read book Measuring Oxidants and Oxidative Stress in Biological Systems written by Lawrence J. Berliner and published by Springer Nature. This book was released on 2020-08-08 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the methods of analysis and determination of oxidants and oxidative stress in biological systems. Reviews and protocols on select methods of analysis of ROS, RNS, oxygen, redox status, and oxidative stress in biological systems are described in detail. It is an essential resource for both novices and experts in the field of oxidant and oxidative stress biology.
Download or read book Endothelial Dysfunction and Inflammation written by Shauna Dauphinee and published by Springer Science & Business Media. This book was released on 2010-09-24 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: Endothelial dysfunction is broadly defined as a disruption of the balance between vasoactive mediators and a propensity towards an inflammatory state. This volume provides an overview of the fields of endothelial dysfunction and inflammation through the discussion of topics ranging from the molecular biology of activated endothelial cells to the endothelium in inflammatory disease and therapeutic approaches targeting endothelial dysfunction. Topics include: Heterogeneity of the endothelium during inflammation, oxidative stress and endothelial dysfunction, biology and regulation of nitric oxide in inflammatory pathologies, endothelial dysfunction in inflammatory diseases, such as diabetes and atherosclerosis and Clinical methods used to assess endothelial function. This book brings together basic and clinical research to assist the reader in bridging connections from bench-to-bedside. Written by expert researchers in the fields of endothelial biology, inflammation research and clinical science, it serves as a useful reference for academic and industrial researchers, clinicians, and trainees in the medical profession.
Download or read book Endothelial Dysfunction During Inflammation and Alloimmunity written by Olaf Penack and published by Frontiers Media SA. This book was released on 2019-04-09 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Endothelial cells form the inner lining of blood and lymphatic vessels and they have frequent interactions with immune cells as well as foreign agents. Endothelial function is crucially involved in physiologic immunity at different stages including recruitment of leukocytes, angiogenesis and tissue repair. Endothelial dysfunction is a not well-defined term, it is widely used to describe the non-physiologic activity of endothelial cells. It has been suggested that endothelial dysfunction plays a role in a variety of human diseases, such as arteriosclerosis, cancer, autoimmunity and sepsis. More recently, a role of lymphatic endothelial cells as well as vascular endothelial cells in the pathophysiology of inflammation and allo-immune reactions has been suggested. Development of novel therapeutic approaches to normalize endothelial dysfunction is currently an unmet medical need. Until now, the cellular and molecular mechanisms of mutual influences between endothelial dysfunction and human diseases remain largely unexplored, constituting a frontier hindering the development of new therapies. This Research Topic aims to build a forum for a wide range of scientific studies in the fields of endothelial dysfunction during inflammatory diseases and transplantation.
Download or read book Hypertension and the Heart written by Alberto Zanchetti and published by Springer. This book was released on 2012-10-21 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the International Conference held as Part of the Menarinei Series on Cardiovascular Diseases in Berlin, Germany, February 27-28, 1998
Download or read book Endothelium and Cardiovascular Diseases written by Protasio L. Da Luz and published by Academic Press. This book was released on 2018-02-03 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt: Endothelium and Cardiovascular Diseases: Vascular Biology and Clinical Syndromes provides an in-depth examination of the role of endothelium and endothelial dysfunction in normal vascular function, and in a broad spectrum of clinical syndromes, from atherosclerosis, to cognitive disturbances and eclampsia. The endothelium is a major participant in the pathophysiology of diseases, such as atherosclerosis, diabetes and hypertension, and these entities are responsible for the largest part of cardiovascular mortality and morbidly. Over the last decade major new discoveries and concepts involving the endothelium have come to light. This important reference collects this data in an easy to reference resource. Written by known experts, and covering all aspects of endothelial function in health and disease, this reference represents an assembly of recent knowledge that is essential to both basic investigators and clinicians. - Provides a complete overview of endothelial function in health and diseases, along with an assessment of new information - Includes coverage of groundbreaking areas, including the artificial LDL particle, the development of a new anti-erectile dysfunction agent, a vaccine for atherosclerosis, coronary calcification associated with red wine, and the interplay of endoplasmic reticulum/oxidative stress - Explores the genetic features of endothelium and the interaction between basic knowledge and clinical syndromes
Download or read book Cardioimmunology Inflammation and Immunity in Cardiovascular Disease written by Mohamed Boutjdir and published by Frontiers Media SA. This book was released on 2020-01-30 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book How Tobacco Smoke Causes Disease written by United States. Public Health Service. Office of the Surgeon General and published by . This book was released on 2010 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report considers the biological and behavioral mechanisms that may underlie the pathogenicity of tobacco smoke. Many Surgeon General's reports have considered research findings on mechanisms in assessing the biological plausibility of associations observed in epidemiologic studies. Mechanisms of disease are important because they may provide plausibility, which is one of the guideline criteria for assessing evidence on causation. This report specifically reviews the evidence on the potential mechanisms by which smoking causes diseases and considers whether a mechanism is likely to be operative in the production of human disease by tobacco smoke. This evidence is relevant to understanding how smoking causes disease, to identifying those who may be particularly susceptible, and to assessing the potential risks of tobacco products.
Download or read book The role of bile acid ba and related metabolites and hormone abnormalities in metabolic diseases written by Yanli Pang and published by Frontiers Media SA. This book was released on 2023-04-17 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Prevention of Blindness from Diabetes Mellitus written by World Health Organization and published by World Health Organization. This book was released on 2006 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diabetes mellitus is an important public health problem worldwide, and more than 75% of patients who have had diabetes mellitus for more than 20 years will have some sort of retinopathy. Diabetic retinopathy correlates with the duration of diabetes; thus with increasing life expectancy, diabetic retinopathy and the ensuing blindness will tend to increase. In view of the increasing prevalence of diabetes mellitus and diabetic retinopathy throughout most of the world, a consultation on prevention of blindness from diabetes mellitus was convened by the World Health Organization to review the current status of diabetic retinopathy care and to define approaches to screening, early detection and management in populations in different settings. This publication reports on the findings of the consultation and provides recommendations and guidelines for the prevention and care of blindness from diabetes mellitus.
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 Oxidative Stress and Vascular Disease written by John F. Keaney Jr. and published by Springer Science & Business Media. This book was released on 1999-12-31 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the major biomedical triumphs of the post-World War II era was the defmitive demonstration that hypercholesterolemia is a key causative factor in atherosclerosis; that hypercholesterolemia can be effectively treated; and that treatment significantly reduces not only coronary disease mortality but also all cause mortality. Treatment to lower plasma levels of cholesterol - primarily low density lipoprotein (LDL) cholesterol - is now accepted as best medical practice and both physicians and patients are being educated to take aggressive measures to lower LDL. We can confidently look forward to important decreases in the toll of coronary artery disease over the coming decades. However, there is still uncertainty as to the exact mechanisms by which elevated plasma cholesterol and LDL levels initiate and favor the progression of lesions. There is general consensus that one of the earliest responses to hypercholesterolemia is the adhesion of monocytes to aortic endothelial cells followed by their penetration into the subendothelial space, where they differentiate into macrophages. These cells, and also medial smooth muscle cells that have migrated into the subendothelial space, then become loaded with mUltiple, large droplets of cholesterol esters . . . the hallmark of the earliest visible atherosclerotic lesion, the so-called fatty streak. This lesion is the precursor of the more advanced lesions, both in animal models and in humans. Thus the centrality of hypercholesterolemia cannot be overstated. Still, the atherogenic process is complex and evolves over a long period of time.
