Extracellular ATP and adenosine as regulators of endothelial cell function

Extracellular ATP and adenosine as regulators of endothelial cell function
Author: Evgenia Gerasimovskaya
Publisher: Springer Science & Business Media
Total Pages: 240
Release: 2010-04-26
Genre: Science
ISBN: 9048134358

Extracellular purines and pyrimidines (ATP, ADP, UTP and adenosine) are released into the extracellular milieu in response to a variety of stress conditions and act as important regulators of vascular homeostasis. This new book is uniquely focused on the signaling actions of extracellular purines in endothelial cells and the crucial role of extracellular purines in regulation of angiogenesis, vascular tone, cell permeability, wound healing, inflammation and cell-to-cell communication. This book examines the responses of endothelial cells, originating from various tissues (such as cornea, pancreas and uterus), to extracellular nucleotides and adenosine under physiological and pathological conditions, i.e. pregnancy, hypoxia, hypertension, inflammation and diabetes. In the book’s 12 chapters, the role of purinergic signaling in endothelium-dependent tissue perfusion, regulation of endothelial barrier function, and angiogenesis are discussed. The mechanisms of ATP release and its role in intercellular communication are also presented. In addition, the book provides the most up to date mechanisms of extracellular nucleotide metabolism by purine-converting ecto-enzymes and their contribution to purinergic signaling in endothelial cells originating from various vascular beds. This book is a valuable resource for biomedical research scientists, clinical scientists, graduate students and health science professionals interested in the mechanisms of extracellular purine function in endothelial cells under physiologic and pathologic conditions.

The Endothelium

The Endothelium
Author: Michel Félétou
Publisher: Morgan & Claypool Publishers
Total Pages: 309
Release: 2011
Genre: Science
ISBN: 1615041230

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

Regulation of Coronary Blood Flow

Regulation of Coronary Blood Flow
Author: Michitoshi Inoue
Publisher: Springer Science & Business Media
Total Pages: 330
Release: 2013-11-09
Genre: Medical
ISBN: 4431683674

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.

Inflammation and the Microcirculation

Inflammation and the Microcirculation
Author: D. Neil Granger
Publisher: Morgan & Claypool Publishers
Total Pages: 99
Release: 2010
Genre: Medical
ISBN: 1615041656

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

The Immunology of Cardiovascular Homeostasis and Pathology

The Immunology of Cardiovascular Homeostasis and Pathology
Author: Susanne Sattler
Publisher: Springer
Total Pages: 285
Release: 2017-06-30
Genre: Medical
ISBN: 3319576135

Cardiovascular immunology is a newly emerging research area, investigating the crosstalk between the cardiovascular and the immune system. This crosstalk is evident through (1) crucial immunological capacities and functions of cardiovascular cell types, including cardiomyocytes, fibroblasts, endothelial cells, pericytes and cardiac resident macrophages, (2) the impact of aberrant immune function on the development of cardiovascular disease such as atherosclerosis, direct and indirect immune-mediated heart disease and vasculitis, and (3) the crucial role of the immune system in cardiac repair and regeneration. The Immunology of Cardiovascular Homeostasis and Pathology covers all these aspects of cardiovascular immunology, starting with homeostatic immunological functions of traditional cardiovascular cell types, and moving then to the role of the immune system in cardiovascular pathology and to recent research into targeting the immune system to boost cardiac healing and regeneration.

Encyclopedia of Cancer

Encyclopedia of Cancer
Author: Manfred Schwab
Publisher: Springer Science & Business Media
Total Pages: 3307
Release: 2008-09-23
Genre: Medical
ISBN: 3540368477

This comprehensive encyclopedic reference provides rapid access to focused information on topics of cancer research for clinicians, research scientists and advanced students. Given the overwhelming success of the first edition, which appeared in 2001, and fast development in the different fields of cancer research, it has been decided to publish a second fully revised and expanded edition. With an A-Z format of over 7,000 entries, more than 1,000 contributing authors provide a complete reference to cancer. The merging of different basic and clinical scientific disciplines towards the common goal of fighting cancer makes such a comprehensive reference source all the more timely.

Regulation of Endothelial Barrier Function

Regulation of Endothelial Barrier Function
Author: Sarah Y. Yuan
Publisher: Biota Publishing
Total Pages: 160
Release: 2011-02-01
Genre: Medical
ISBN: 1615041214

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.

The Adenosine Receptors

The Adenosine Receptors
Author: Pier Andrea Borea
Publisher: Humana Press
Total Pages: 603
Release: 2018-07-28
Genre: Medical
ISBN: 3319908081

This book traces the history of adenosine receptor research from molecular biology to medicinal chemistry to behavior, including their implications in disease and potential strategies as therapeutic targets. It provides the reader with a comprehensive overview of the adenosine receptors that includes information on all subtypes - A1, A2A, A2B and A3. Aspects addressed include the most up to date information on their functional distribution in the nervous and peripheral systems, behavioral roles in inflammation, cancer, pain and neurological diseases such as Huntington’s disease, Epilepsy, Parkinson’s disease and Alzheimer’s disease.

P2 Purinoceptors

P2 Purinoceptors
Author: Derek Chadwick
Publisher:
Total Pages: 360
Release: 1996-08-06
Genre: Medical
ISBN:

Many different pathological conditions are currently under investigation as therapeutic targets of purines including cancer, cardiovascular conditions, behavioural disorders, inflammation, immunoregulation, and neuroendocrine function. This book draws together research on all aspects of P2 purinoceptors and discusses their use in different therapeutic areas.