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The book represents a paradigm shift from the traditional static model of investigation of oxidative biology to the dynamic model of vascular oxidative stress. The investigation of vascular biology and cardiovascular medicine is made possible by the use of tissue engineering, nanotechnology and stem cell research. This is the first textbook to target a wide readership from academia to industry and government agencies in the field of cardiovascular diseases.
Areas addressed in this excellent text include the overall response of the endothelium to hemodynamic forces, and molecular biology with gene regulation taking a central role.
This volume of the series Cardiac and Vascular Biology presents the most relevant aspects of vascular mechanobiology along with many more facets of this fascinating, timely and clinically highly relevant field. Mechanotransduction, mechanosensing, fluid shear stress, hameodynamics and cell fate, are just a few topics to name. All important aspects of vascular mechanobiology in health and disease are reviewed by some of the top experts in the field. This volume, together with a second title on cardiac mechanobiology featured in this series, will be of high relevance to scientists and clinical researchers in the area of vascular biology, cardiology and biomedical engineering.
The endothelium is an excellent example of where biology meets physics and engineering. It must convert mechanical forces into chemical signals to maintain homeostasis. It also controls the immune response, drug delivery through the vasculature, and cancer metastasis. Basic understanding of these processes is starting to emerge and the knowledge ga
Modern mechanobiology converges both engineering and medicine to address personalized medicine. This book is built on the previously well-received edition, Hemodynamics and Mechanobiology of Endothelium. The central theme is "omic" approaches to mechanosignal transduction underlying tissue development, injury, and repair. A cadre of investigators has contributed to the chapters, enriching the interface between mechanobiology and precision medicine for personalized diagnosis and intervention. The book begins with the fundamental basis of vascular disease in response to hemodynamic shear stress and then details cardiovascular development and regeneration, valvular and cardiac morphogenesis, mechanosensitive microRNA and histone unfolding, computational fluid dynamics, and light-sheet imaging. This edition represents a paradigm shift from traditional biomechanics and signal transduction to transgenic models, including novel zebrafish and chick embryos, and targets a wider readership from academia to industry and government agencies in the field of mechanobiology.
The aortic valve (AV) functions in arguably the most demanding mechanical environment in the body. The AV experiences fluid shear stress, cyclic pressure and mechanical strain in vivo. Recent evidence has shown the progression of degenerative aortic valve disease (AVD) to be an active cellular mediated process, altering the conception of the AV as a passive tissue. AVD has shown a strong correlation with altered hemodynamics and tissue mechanics. Aortic valve endothelial cells (AVECs) line the fibrosa (aortic facing) and ventricularis (left ventricle facing) surfaces of the valve. AVECs sense and respond to circulating stimuli in the blood stream while maintaining a non-thrombogenic layer. AVEC activation has been implicated in the initiation and progression of AVD, but the role of cyclic strain has yet to be elucidated. The hypothesis of this dissertation is that altered mechanical forces have a causal relationship with aortic valvular endothelial cell activation. To test this hypothesis 1) the role of in vitro cyclic strain in regulating expression of pro-inflammatory adhesion molecule was elucidated 2) cyclic strain-dependent activation of side-specific aortic valve endothelial cells was investigated 3) a novel stretch bioreactor was developed to dramatically increase the ability to correlate valvular endothelium response to physiologically relevant applied planar biaxial loads. The results from this study further the field of heart valve mechanobiology by correlating AVEC physiological and pathophysiological function to cellular and tissue level strain. Elucidating the AVEC response to an altered mechanical environment may result in novel clinical diagnostic and therapeutic approaches to the initiation and progression of degenerative AVD. Furthermore, a cardiovascular health outreach program, Bulldogs for Heart Health, has been designed and implemented to combat the startling rise in childhood obesity in the state of Mississippi. It is the hope that these results, novel methods, and outreach initiatives developed will significantly impact the study of the mechanobiology of the aortic valve endothelial cell and potential treatment and prevention of cardiovascular disease.
The endothelium is a thin layer of endothelial cells that line the interior surface of an artery. Due to their direct contact with blood flow, endothelial cells experience varying hemodynamic forces and respond to these forces by altering their morphology. When plaque and other substances accumulate in the walls of arteries, i.e., atherosclerosis, endothelial cells have abnormal responses to blood flow. Studying atherosclerosis progression is, therefore, a two-fold investigation into 1) the hemodynamic forces that cause endothelial responses, and 2) the biological and mechanical responses of endothelial cells. The ultimate goal of this study was to develop an experimental method that was able to temporally and spatially quantify hemodynamic forces and endothelial mechanics.
An emerging field at the interface of biology and engineering, mechanobiology explores the mechanisms by which cells sense and respond to mechanical signals—and holds great promise in one day unravelling the mysteries of cellular and extracellular matrix mechanics to cure a broad range of diseases. Mechanobiology: Exploitation for Medical Benefit presents a comprehensive overview of principles of mechanobiology, highlighting the extent to which biological tissues are exposed to the mechanical environment, demonstrating the importance of the mechanical environment in living systems, and critically reviewing the latest experimental procedures in this emerging field. Featuring contributions from several top experts in the field, chapters begin with an introduction to fundamental mechanobiological principles; and then proceed to explore the relationship of this extensive force in nature to tissues of musculoskeletal systems, heart and lung vasculature, the kidney glomerulus, and cutaneous tissues. Examples of some current experimental models are presented conveying relevant aspects of mechanobiology, highlighting emerging trends and promising avenues of research in the development of innovative therapies. Timely and important, Mechanobiology: Exploitation for Medical Benefit offers illuminating insights into an emerging field that has the potential to revolutionise our comprehension of appropriate cell biology and the future of biomedical research.