Download or read book Microcirculation in Cardiovascular Diseases written by Enrico Agabiti-Rosei and published by Springer Nature. This book was released on 2020-10-03 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Perivascular Adipose Tissue PVAT in Health and Disease written by Stephanie W. Watts and published by Frontiers Media SA. This book was released on 2018-10-05 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Perivascular Adipose Tissue and Vascular Function written by Rachel Walker and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Understanding the Potential Mechanisms by which Peri vascular Adipose Tissue PVAT contributes to obesity related Cardiovascular Diseases CVDs written by Dr. Hakim Saboowala and published by Dr.Hakim Saboowala. This book was released on 2020-07-02 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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)

Download or read book The Role of Perivascular Adipose Tissue in Vascular Function written by Mohammad Shahzad Saleem and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Perivascular Adipose Tissue PVAT in Health and Disease written by and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Epicardial Adipose Tissue written by Gianluca Iacobellis and published by Springer Nature. This book was released on 2020-03-25 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the first authoritative and comprehensive volume dedicated to epicardial adipose tissue (EAT). It provides an up-to-date and highly illustrated synopsis of the anatomical, biomolecular, genetic, imaging features, and clinical applications of EAT and its role in cardiovascular disease. It relays to the reader a contemporary view of the emerging interplay between the heart and adiposity-related diseases. In addition, this volume discusses the clinical implications and therapeutic targets of EAT in atrial fibrillation, heart failure and coronary artery disease. Comprehensive yet focused, Epicardial Adipose Tissue: From Cell to Clinic is an essential resource for physicians, residents, fellows, and medical students in cardiology, endocrinology, primary care, and health promotion and disease prevention.

Download or read book Textbook of Vascular Medicine written by Rhian M. Touyz and published by Springer. This book was released on 2019-08-02 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Angiogenesis in Adipose Tissue written by Yihai Cao and published by Springer Science & Business Media. This book was released on 2013-09-05 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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..

Download or read book Basic Sciences for MCEM written by Chetan Trivedy and published by CRC Press. This book was released on 2016-05-15 with total page 771 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a dedicated resource for those sitting the Part A of the MCEM (Membership of the College of Emergency Medicine) examination. It forms an essential revision guide for emergency trainees who need to acquire a broad understanding of the basic sciences, which underpin their approach to clinical problems in the emergency department. Common clinical scenarios are used to highlight the essential underlying basic science principles, providing a link between clinical management and a knowledge of the underlying anatomical, physiological, pathological and biochemical processes. Multiple choice questions with reasoned answers are used to confirm the candidates understanding and for self testing. Unlike other recent revision books which provide MCQ questions with extended answers, this book uses clinical cases linked to the most recent basic science aspects of the CEM syllabus to provide a book that not only serves as a useful revision resource for the Part A component of the MCEM examination, but also a unique way of understanding the processes underlying common clinical cases seen every day in the emergency department. This book is essential for trainees sitting the Part A of the MCEM exam and for clinicians and medical students who need to refresh their knowledge of basic sciences relevant to the management of clinical emergencies.

Download or read book The ESC Textbook of Vascular Biology written by Rob Krams and published by Oxford University Press. This book was released on 2017 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ESC Textbook of Vascular Biology is a rich and clearly laid-out guide by leading European scientists providing comprehensive information on vascular physiology, disease, and research.

Download or read book Emerging Roles of Perivascular Adipose Tissue in Regulation of Vascular Functions written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Clinical and experimental studies provide increasing evidence that obesity is a major cardiovascular risk factor and that the adipose tissue is not just for regulation of lipid and energy homeostasis. Accordingly, the endocrine secretion of adipose tissue is implicated in the pathogenesis of vascular diseases. Whilst the functions of visceral and subcutaneous adipose tissue are relatively well studied, the role of perivascular adipose tissue in regulation of vascular functions is usually ignored. Emerging evidence indicates that perivascular adipose tissue is involved in the regulation of various physiological and pathological processes such as vascular smooth muscle contraction, vascular wall remodeling and inflammation, and, consequently, atherosclerosis and hypertension. Here we present an updated overview of vascular adipobiology, focusing on perivascular adipose tissue.

Download or read book Mature Adipocytes and Perivascular Adipose Tissue Stimulate Vascular Smooth Muscle Cell Proliferation Effects of Aging and Obesity written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Adipocytes and perivascular adipose tissue are emerging as regulators of vascular function. The effects of adipocytes and perivascular adipose tissue on human smooth muscle cell (SMC) proliferation were investigated. Conditioned medium was prepared from cultured premature and differentiated 3T3-L1 adipocytes and from periaortic adipose tissue from young (3 mo) and old (24 mo) Wistar-Kyoto (WKY) rats, lean and obese Zucker rats (3 mo), and WKY rats fed normal chow or a high-fat diet for 3 mo. Conditioned medium from differentiated (but not premature) adipocytes stimulated SMC proliferation, which was abolished by charcoal and proteinase K treatment but was resistant to heat, trypsin, or phospholipase B (to hydrolyze lysophosphatidic acid). Further experiments demonstrated that the growth factor(s) are hydrosoluble and present in the fraction of molecular mass>100 kDa. Moreover, conditioned medium from periaortic adipose tissue stimulated SMC proliferation, which was significantly enhanced in aged rats and in rats fed a high-fat diet but not in obese Zucker rats deficient in functional leptin receptors. In conclusion, mature adipocytes release hydrosoluble protein growth factor(s) with a molecular mass>100 kDa for SMCs. Perivascular adipose tissue stimulates SMC proliferation, which is enhanced in aged WKY and in high-fat, diet-induced obesity but not in leptin receptor-deficient obese Zucker rats. These adipocyte-derived growth factor(s) and the effect of perivascular adipose tissue may be involved in vascular disease associated with aging and obesity.

Download or read book Biomedical Visualisation written by Paul M. Rea and published by Springer. This book was released on 2019-03-27 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edited volume explores the use of technology to enable us to visualise the life sciences in a more meaningful and engaging way. It will enable those interested in visualisation techniques to gain a better understanding of the applications that can be used in imaging and analysis, education, engagement and training. The reader will be able to explore the utilisation of technologies from a number of fields to enable an engaging and meaningful visual representation of the life sciences. This use of technology-enhanced learning will be of benefit for the learner, trainer, in patient care and the wider field of education and engagement. By examining a range of techniques in image capture (photogrammetery, stereophotogrammetry, microphotogrammetry and autostereoscopy), this book will showcase the wide range of tools we can use. Researchers in this field will be able to find something suitable to apply to their work to enhance user engagement through improved visual means using the technologies we have available to us today. It will highlight the uses of these technologies to examine many aspects of the human body, and enable improved ways to enhance visual and tactile learning, including 3D printing. By demonstrating co-design processes, working directly with the end-stage users (including patients), it will also highlight successes in adopting tools like hand motion tracking rehabilitation for patients with conditions like multiple sclerosis. The book will also discuss the applications of immersive environments including virtual, augmented and mixed reality. The ultimate aim is to show how, by using these tools, we can enhance communication, mobile applications, health literacy and illustration of both normal and pathological processes in the body. By applying a wide range of tools and technologies, this volume will highlight the wide range of applications in education, training and learning both for students and faculty, but also for patient care and education. Therefore, the work presented here can be accessed by a wide range of users from faculty and students involved in the design and development of these processes, by examining the pedagogy around these technologies. Importantly, it presents material, which will be of benefit for the patient, engaging them to become more involved with techniques like physiotherapy.

Download or read book Effect of Coronary Perivascular Adipose Tissue on Vascular Smooth Muscle Function in Metabolic Syndrome written by Meredith Kohr Owen and published by . This book was released on 2013 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: Obesity increases cardiovascular disease risk and is associated with factors of the "metabolic syndrome" (MetS), a disorder including hypertension, hypercholesterolemia and/or impaired glucose tolerance. Expanding adipose and subsequent inflammation is implicated in vascular dysfunction in MetS. Perivascular adipose tissue (PVAT) surrounds virtually every artery and is capable of releasing factors that influence vascular reactivity, but the effects of PVAT in the coronary circulation are unknown. Accordingly, the goal of this investigation was to delineate mechanisms by which lean vs. MetS coronary PVAT influences vasomotor tone and the coronary PVAT proteome. We tested the hypothesis that MetS alters the functional expression and vascular contractile effects of coronary PVAT in an Ossabaw swine model of the MetS. Utilizing isometric tension measurements of coronary arteries in the absence and presence of PVAT, we revealed the vascular effects of PVAT vary according to anatomical location as coronary and mesenteric, but not subcutaneous adipose tissue augmented coronary artery contractions to KCl. Factors released from coronary PVAT increase baseline tension and potentiate constriction of isolated coronary arteries relative to the amount of adipose tissue present. The effects of coronary PVAT are elevated in the setting of MetS and occur independent of endothelial function. MetS is also associated with substantial alterations in the coronary PVAT proteome and underlying increases in vascular smooth muscle Ca2+ handling via CaV1.2 channels, H2O2-sensitive K+ channels and/or upstream mediators of these ion channels. Rho-kinase signaling participates in the increase in coronary artery contractions to PVAT in lean, but not MetS swine. These data provide novel evidence that the vascular effects of PVAT vary according to anatomic location and are influenced by the MetS phenotype.

Download or read book Coronary Perivascular Adipose Tissue and Vascular Smooth Muscle Function written by Jillian Nicole Noblet and published by . This book was released on 2016 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Factors released from coronary perivascular adipose tissue (PVAT), which surrounds large coronary arteries, have been implicated in the development of coronary disease. However, the precise contribution of coronary PVAT-derived factors to the initiation and progression of coronary vascular dysfunction remains ill defined. Accordingly, this investigation was designed to delineate the mechanisms by which PVAT-derived factors influence obesity-induced coronary smooth muscle dysfunction. Isometric tension studies of coronary arteries from lean and obese swine demonstrated that both lean and obese coronary PVAT attenuate vasodilation via inhibitory effects on smooth muscle K+ channels. Specifically, lean coronary PVAT attenuated KCa and KV7 channel-mediated dilation, whereas obese coronary PVAT impaired KATP channel-mediated dilation. Importantly, these effects were independent of alterations in underlying smooth muscle function in obese arteries. The PVAT-derived factor calpastatin impaired adenosine dilation in lean but not obese arteries, suggesting that alterations in specific factors may contribute to the development of smooth muscle dysfunction. Further studies tested the hypothesis that leptin, which is expressed in coronary PVAT and is upregulated in obesity, acts as an upstream mediator of coronary smooth muscle dysfunction. Long-term administration (3 day culture) of obese concentrations of leptin markedly altered the coronary artery proteome, favoring pathways associated with calcium signaling and cellular proliferation. Isometric tension studies demonstrated that short-term (30 min) exposure to leptin potentiated depolarization-induced contraction of coronary arteries and that this effect was augmented following longer-term leptin administration (3 days). Inhibition of Rho kinase reduced leptin-mediated increases in coronary artery contractions. Acute treatment was associated with increased Rho kinase activity, whereas longer-term exposure was associated with increases in Rho kinase protein abundance. Alterations in Rho kinase signaling were also associated with leptin-mediated increases in coronary vascular smooth muscle proliferation. These findings provide novel mechanistic evidence linking coronary PVAT with vascular dysfunction and further support a role for coronary PVAT in the pathogenesis of coronary disease.

Download or read book Coronary Vasomotion Abnormalities written by Hiroaki Shimokawa and published by Springer Nature. This book was released on 2020-12-08 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the latest findings on epicardial coronary spasm and coronary microvascular dysfunction (CMD), important diseases for understanding coronary artery vasomotion abnormalities. The book chiefly consists of two major parts, each of which explores the epidemiology, pathophysiology, diagnosis and treatment of the diseases. The chapters present a range of experimental and clinical studies, including the editor’s life’s work on coronary spasm; how Rho-kinase activation plays an important role in connection with the disease; how chronic adventitial inflammation is a central pathophysiology of the spasm; the importance of Rho-kinase activation in the pathogenesis of CMD; how epicardial spasm and CMD frequently co-exist; and much more. Coronary Vasomotion Abnormalities will help practicing cardiologists, cardiac surgeons, vascular biologists and radiologists understand the latest issues concerning the clinical, interventional, and surgical management of these conditions, and offer these readers valuable insights into the effective treatment of microvascular angina.