Angiogenesis In Adipose Tissue

Angiogenesis has recently played a critical role in regulation of adipose tissue expansion and regression. Like most other tissues in the body, adipose expansion and regression is accompanied by alteration of blood vessel density and structures. The vascular alteration plays an active role in regulation of adipose tissue size and functions. Targeting blood vessels in the adipose tissue have demonstrated to be a novel approach for possibly treatment of cancer, obesity and other metabolic diseases. This book provides the most updated information on this type research and discusses future opportunities for therapy..

The endothelium enables communication between blood and tissues and is actively involved in cardiovascular homeostasis. Endothelial dysfunction has been recognized as an early step in the development of cardiovascular diseases: respectively, endothelium represents a potential therapeutic niche with multiple targets. The purpose of the book is to point out some recent findings of endothelial physiology and pathophysiology emphasizing various aspects of endothelial dysfunction connected to the body's internal and external environment. While basic features of the endothelium are presented in an introductory chapter, the authors of the following 17 chapters have provided extensive insight into some selected topics of endothelial (dys)function. The book would hopefully be useful for anyone interested in recapitulating endothelial (patho)physiology and expanding knowledge of molecular mechanisms involved in endothelial dysfunction, relevant also for further clinical investigations.

The scientific advances in the physiology and pathophysiology of adipose tissue over the last two decades have been considerable. Today, the cellular and molecular mechanisms of adipogenesis are well known. In addition, adipose tissue is now recognized as a real endocrine organ that produces hormones such as the leptin acting to regulate food intake and energy balance in the central nervous system, a finding that has completely revolutionized the paradigm of energy homeostasis. Other adipokines have now been described and these molecules are taking on increasing importance in physiology and pathophysiology. Moreover, numerous works have shown that in obesity, but also in cases of lipodystophy, adipose tissue was the site of a local low-grade inflammation that involves immune cells such as macrophages and certain populations of lymphocytes. This new information is an important step in the pathophysiology of both obesity and related metabolic and cardiovascular complications. Finally, it is a unique and original work focusing on adipose tissue, covering biology and pathology by investigating aspects of molecular and cellular biology, general, metabolic, genetic and genomic biochemistry.

Angiogenesis, the formation of new blood vessels, is fundamental for physiological processes such as embryonic and postnatal development, wound repair, and reproductive functions. Angiogenesis plays a major role in tumor growth and in several autoimmune and allergic disorders. Lymphangiogenesis, the formation of new lymphatic vessels, is also important for tumor growth, the formation of metastasis, and chronic inflammatory diseases. Judah Folkman, a pioneer in the study of angiogenesis, first proposed that macrophages and mast cells could be a relevant source of angiogenic factors. Since then, much effort has gone into the elucidation of the role of immune cells in the modulation of angiogenesis and lymphangiogenesis. There is now compelling evidence that several components of the innate and adaptive immune system are implicated in inflammatory and neoplastic angiogenesis and lymphangiogenesis. Articles in this volume deal with the emerging, intriguing possibility that immune cells are both a source and a target of angiogenic and lymphangiogenic factors. Therefore, cells of the immune system might play a role in inflammatory and neoplastic angiogenesis/lymphangiogenesis through the expression of several angiogenic factors and their receptors and co-receptors. The important new findings in this volume will be of special interest to vascular biologists, basic and clinical immunologists, oncologists and to specialists in allergic and immune disorders.

Recent studies have shown that cells from adipose tissue are capable of trafficking to tumors, thus enabling paracrine action of adipokines from within the tumor microenvironment. Increased tumor vascularization, immune system suppression and direct effects on malignant cell survival and proliferation have been investigated as mechanisms regulated by adipokines. The goal of this book is to discuss data pointing to the role of adipose tissue in cancer and to dissect individual mechanisms through which adipose tissue excess or restriction could influence cancer progression.

Angiogenesis is a highly complex phenomenon where new blood vessels are formed for the supply of oxygen and nutrients in different organs of the body. It plays a critical role in both physiological processes such as growth and development as well as pathological processes including cancer and different types of tumors. Angiogenesis is also essential for the regeneration and survival of cells in several disease conditions such as ischemic heart disease (myocardial infarction), atherosclerosis, brain injury (stroke) and diabetes. Since the mechanisms of angiogenesis are organ specific and differ among various diseases, it is proposed to devote one section of this book to the development of angiogenesis in some selected diseases such as cancer, ischemic heart disease, atherosclerosis, diabetes and stroke. It is pointed out that extensive research work in this regard has been carried out in the area of cancer and heart disease, whereas relatively less attention has been paid to studying angiogenesis in other disease conditions.

The radical expansion and revision of techniques and experimental approaches employed in the study of adipose tissue are reflected in this revised book. Several updated chapters are combined with many new contributions from internationally recognized experts. Conventional and state-of-the-art methodologies are covered, as well as whole animal, cellular and molecular approaches which have emerged in or been extended to adipose tissue research over the past few years. This revised all-in-one manual is essential reading for newcomers to this burgeoning area as well as a valuable volume for more experienced researchers.

This book is a must-have for anyone interested in obesity or the physiology of white or brown adipose tissues. It contains state-of-the-art methods from researchers that are world leaders in this field. Detailed lab protocols range from methods to visualize adipocytes and adipose tissues in humans and experimental models, to convert stem cells into white and brown adipocytes in vitro, to evaluate aspects of adipocyte metabolism, to inducibly knock out genes in adipose tissues, and to evaluate transcriptional control of adipogenesis on a global scale. The study of adipose tissue goes hand in hand with our global effort to understand and reverse the epidemic of obesity and associated medical complications Contributors include leading researchers who have made tremendous contributions to our ability to investigate white and brown adipose tissues The wide variety of experimental approaches detailed within this volume: including the evaluation of adipose tissue biology at the molecular, biochemical, cellular, tissue, and organismal levels