Perivascular Adipose Tissue Pvat In Health And Disease

In 1991, Soltis and Cassis (Clin Exp Hypertens A 1991 13:277-296) published the first paper that the fat tissue around an artery - perivascular adipose tissue or PVAT - changed how the artery contracted to norepinephrine. Followed later by important work showing that PVAT itself contained vasoactive molecules, the scientific community recognized that PVAT was not simply a store of fat but is a vasoactive tissue that contributes to the functioning and status of the vessel it surrounds. Our goal for this Frontiers Research Topic is to highlight the significant reach of PVAT in vascular function, from contractility to growth in health and in disease. In doing so, we explicitly place findings that can be taken advantage of in creating new therapies for cardiovascular diseases that continue to challenge our community. These include hypertension, atherosclerosis, and diabetes to name a few.

Understanding the Potential Mechanisms by which Peri-vascular Adipose Tissue (PVAT) contributes to obesity-related Cardiovascular Diseases (CVDs)., Obesity is a fast-growing problem that is reaching epidemic magnitudes worldwide, affecting both children and adults. It is associated with increased risk of: ü premature death, ü morbidity, and ü mortality from several cardiovascular diseases (CVDs), including: ü stroke, ü coronary heart disease (CHD), ü myocardial infarction, and ü congestive heart failure. Although several studies have substantiated that obesity confers an independent and additive risk of all-cause and cardiovascular death, there is significant variability in these associations, with some lean individuals developing diseases and others remaining healthy despite severe obesity, the so-called metabolically healthy obese. Part of this variability has been attributed to the heterogeneity in both the distribution of body fat and the intrinsic properties of adipose tissue depots, including: ü developmental origin, ü adipogenic and proliferative capacity, ü glucose and lipid metabolism, ü hormonal control, ü thermogenic ability, and ü vascularization. In obesity, these depot-specific differences translate into specific fat distribution patterns, which are closely associated with differential cardiometabolic risks. The adventitial fat layer, also known as perivascular adipose tissue (PVAT), is of major importance. Similar to the visceral adipose tissue, PVAT has a pathophysiological role in CVDs. PVAT influences vascular homeostasis by releasing numerous vasoactive factors, cytokines, and adipokines, which can readily target the underlying smooth muscle cell layers, regulating the vascular tone, distribution of blood flow, as well as angiogenesis, inflammatory processes, and redox status. An effort has been made in this Booklet to summarize the current knowledge and discuss the role of PVAT within the scope of adipose tissue as a major contributing factor to obesity-associated cardiovascular risk along with several relevant illustrations. …Dr. H. K. Saboowala. M.B.(Bom) .M.R.S.H.(London)

This book presents a comprehensive survey of adipose tissue, its physiological functions, and its role in disease. The volume spans the entire range of adipose tissue studies, from basic anatomical and physiological research to epidemiology and clinical studies. Groundbreaking recent studies are incorporated into traditional models of adipose tissue properties. A description of the role of macrophages in obesity and metabolism in included.

This book offers an extensive review of the most recent data on the pathophysiological role of structural and functional alterations in the microcirculation, particularly focusing on hypertension and diabetes. It covers several relevant and innovative aspects, including the possible mechanisms involved in the development of microvascular remodeling and rarefaction, the technical approaches available for the detection of microvascular alterations, including non-invasive evaluations, the prognostic role of changes in small resistance artery structure, the possibility of preventing or regressing such alterations with appropriate treatment, and the potential clinical advantages of such intervention. A number of innovative areas of research are considered, including the role of the immune system, inflammation and oxidative stress in the development of microvascular alterations. Lastly, it examines the availability of recent non-invasive methods for the evaluation of small resistance artery morphology in the retina, which in the near future may provide a useful tool for the stratification of cardiovascular risk and even for clinical decisions regarding drug treatment, thus providing physicians with a clinically relevant instrument for improving and optimizing the management of hypertensive and diabetic patients. The book provides valuable, clinically relevant information for specialists (cardiology, internal medicine, and endocrinology) and general practitioners, and also offers novel and stimulating data to basic and clinical researchers.

This timely and most comprehensive reference available on the topic covers all the different aspects vital in the fight against the global obesity epidemic. Following a look at adipose tissue development and morphology, the authors go on to examine its metabolic and endocrine functions and its role in disease. The final section deals with comparative and evolutionary aspects of the tissue. The result is an essential resource for cell and molecular biologists, physiologists, biochemists, pharmacologists, and those working in the pharmaceutical industry.

This textbook focuses on the vascular biology and physiology that underlie vascular disorders in clinical medicine. Vascular biomedicine is a rapidly growing field as new molecular mechanisms of vascular health and disease are unraveled. Many of the major cardiovascular diseases including coronary artery disease, heart failure, stroke and vascular dementia are diseases of the vasculature. In addition vascular injury underpins conditions like kidney failure and cardiovascular complications of diabetes. This field is truly multidisciplinary involving scientists in many domains such as molecular and vascular biology, cardiovascular physiology and pharmacology and immunology and inflammation. Clinically, specialists across multiple disciplines are involved in the management of patients with vascular disorders, including cardiologists, nephrologists, endocrinologists, neurologists and vascular surgeons. This book covers a wide range of topics and provides an overview of the discipline of vascular biomedicine without aiming at in-depth reviews, but rather offering up-to-date knowledge organized in concise and structured chapters, with key points and pertinent references. The structure of the content provides an integrative and translational approach from basic science (e.g. stem cells) to clinical medicine (e.g. cardiovascular disease). The content of this book is targeted to those who are new in the field of vascular biology and vascular medicine and is ideal for medical students, graduate and postgraduate students, clinical fellows and academic clinicians with an interest in the vascular biology and physiology of cardiovascular disease and related pathologies.