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Author: Ulla Kopp Publisher: Morgan & Claypool Publishers ISBN: 1615042318 Category : Medical Languages : en Pages : 99
Book Description
The kidney is innervated with efferent sympathetic nerve fibers reaching the renal vasculature, the tubules, the juxtaglomerular granular cells, and the renal pelvic wall. The renal sensory nerves are mainly found in the renal pelvic wall. Increases in efferent renal sympathetic nerve activity reduce renal blood flow and urinary sodium excretion by activation of α1-adrenoceptors and increase renin secretion rate by activation of β1-adrenoceptors. In response to normal physiological stimulation, changes in efferent renal sympathetic nerve activity contribute importantly to homeostatic regulation of sodium and water balance. The renal mechanosensory nerves are activated by stretch of the renal pelvic tissue produced by increases in renal pelvic tissue of a magnitude that may occur during increased urine flow rate. Activation of the sensory nerves elicits an inhibitory renorenal reflex response consisting of decreases in efferent renal sympathetic nerve activity leading to natriuresis. Increasing efferent sympathetic nerve activity increases afferent renal nerve activity which, in turn, decreases efferent renal sympathetic nerve activity by activation of the renorenal reflexes. Thus, activation of the afferent renal nerves buffers changes in efferent renal sympathetic nerve activity in the overall goal of maintaining sodium balance. In pathological conditions of sodium retention, impairment of the inhibitory renorenal reflexes contributes to an inappropriately increased efferent renal sympathetic nerve activity in the presence of sodium retention. In states of renal disease or injury, there is a shift from inhibitory to excitatory reflexes originating in the kidney. Studies in essential hypertensive patients have shown that renal denervation results in long-term reduction in arterial pressure, suggesting an important role for the efferent and afferent renal nerves in hypertension. Table of Contents: Part I: Efferent Renal Sympathetic Nerves / Introduction / Neuroanatomy / Neural Control of Renal Hemodynamics / Neural Control of Renal Tubular Function / Neural Control of Renin Secretion Rate / Part II: Afferent Renal Sensory Nerves / Introduction / Neuroanatomy / Renorenal Reflexes / Mechanisms Involved in the Activation of Afferent Renal Sensory Nerves / Part III: Pathophysiological States / Efferent Renal Sympathetic Nerves / Afferent Renal Sensory Nerves / Conclusions / References
Author: Ulla Kopp Publisher: Morgan & Claypool Publishers ISBN: 1615042318 Category : Medical Languages : en Pages : 99
Book Description
The kidney is innervated with efferent sympathetic nerve fibers reaching the renal vasculature, the tubules, the juxtaglomerular granular cells, and the renal pelvic wall. The renal sensory nerves are mainly found in the renal pelvic wall. Increases in efferent renal sympathetic nerve activity reduce renal blood flow and urinary sodium excretion by activation of α1-adrenoceptors and increase renin secretion rate by activation of β1-adrenoceptors. In response to normal physiological stimulation, changes in efferent renal sympathetic nerve activity contribute importantly to homeostatic regulation of sodium and water balance. The renal mechanosensory nerves are activated by stretch of the renal pelvic tissue produced by increases in renal pelvic tissue of a magnitude that may occur during increased urine flow rate. Activation of the sensory nerves elicits an inhibitory renorenal reflex response consisting of decreases in efferent renal sympathetic nerve activity leading to natriuresis. Increasing efferent sympathetic nerve activity increases afferent renal nerve activity which, in turn, decreases efferent renal sympathetic nerve activity by activation of the renorenal reflexes. Thus, activation of the afferent renal nerves buffers changes in efferent renal sympathetic nerve activity in the overall goal of maintaining sodium balance. In pathological conditions of sodium retention, impairment of the inhibitory renorenal reflexes contributes to an inappropriately increased efferent renal sympathetic nerve activity in the presence of sodium retention. In states of renal disease or injury, there is a shift from inhibitory to excitatory reflexes originating in the kidney. Studies in essential hypertensive patients have shown that renal denervation results in long-term reduction in arterial pressure, suggesting an important role for the efferent and afferent renal nerves in hypertension. Table of Contents: Part I: Efferent Renal Sympathetic Nerves / Introduction / Neuroanatomy / Neural Control of Renal Hemodynamics / Neural Control of Renal Tubular Function / Neural Control of Renin Secretion Rate / Part II: Afferent Renal Sensory Nerves / Introduction / Neuroanatomy / Renorenal Reflexes / Mechanisms Involved in the Activation of Afferent Renal Sensory Nerves / Part III: Pathophysiological States / Efferent Renal Sympathetic Nerves / Afferent Renal Sensory Nerves / Conclusions / References
Author: Michel Félétou Publisher: Morgan & Claypool Publishers ISBN: 1615041230 Category : Science Languages : en Pages : 309
Book Description
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
Author: Vinood B. Patel Publisher: Springer ISBN: 9789400776982 Category : Medical Languages : en Pages : 0
Book Description
In the past decade there has been a major sea change in the way disease is diagnosed and investigated due to the advent of high throughput technologies, such as microarrays, lab on a chip, proteomics, genomics, lipomics, metabolomics etc. These advances have enabled the discovery of new and novel markers of disease relating to autoimmune disorders, cancers, endocrine diseases, genetic disorders, sensory damage, intestinal diseases etc. In many instances these developments have gone hand in hand with the discovery of biomarkers elucidated via traditional or conventional methods, such as histopathology or clinical biochemistry. Together with microprocessor-based data analysis, advanced statistics and bioinformatics these markers have been used to identify individuals with active disease or pathology as well as those who are refractory or have distinguishing pathologies. New analytical methods that have been used to identify markers of disease and is suggested that there may be as many as 40 different platforms. Unfortunately techniques and methods have not been readily transferable to other disease states and sometimes diagnosis still relies on single analytes rather than a cohort of markers. There is thus a demand for a comprehensive and focused evidenced-based text and scientific literature that addresses these issues. Hence the formulation of Biomarkers in Disease. The series covers a wide number of areas including for example, nutrition, cancer, endocrinology, cardiology, addictions, immunology, birth defects, genetics, and so on. The chapters are written by national or international experts and specialists.
Author: Denis F. Geary Publisher: Springer ISBN: 3662529726 Category : Medical Languages : en Pages : 1968
Book Description
The new edition of this valuable clinical resource offers a state of the art, comprehensive review on every clinical condition encountered in pediatric nephrology. International experts present the latest knowledge on epidemiology, diagnosis, management, and prognosis in one concise, clinically focused text, in which care has been taken to couple just the right amount of "need-to-know" basic science with practical clinical guidance that will enable the reader to make efficient, informed decisions. The topics covered include: disorders of renal development, glomerular disorders, the kidney and systemic disease, renal tubular disorders, tubulointerstitial disease, urinary tract disorders, acute kidney injury, hypertension, chronic and end-stage renal disease, and renal replacement therapy. The full-color, highly visual, meticulously crafted format will ensure that the practitioner is able to source and apply information with remarkable ease.
Author: Protasio L. Da Luz Publisher: Academic Press ISBN: 0128125519 Category : Medical Languages : en Pages : 760
Book Description
Endothelium and Cardiovascular Diseases: Vascular Biology and Clinical Syndromes provides an in-depth examination of the role of endothelium and endothelial dysfunction in normal vascular function, and in a broad spectrum of clinical syndromes, from atherosclerosis, to cognitive disturbances and eclampsia. The endothelium is a major participant in the pathophysiology of diseases, such as atherosclerosis, diabetes and hypertension, and these entities are responsible for the largest part of cardiovascular mortality and morbidly. Over the last decade major new discoveries and concepts involving the endothelium have come to light. This important reference collects this data in an easy to reference resource. Written by known experts, and covering all aspects of endothelial function in health and disease, this reference represents an assembly of recent knowledge that is essential to both basic investigators and clinicians. - Provides a complete overview of endothelial function in health and diseases, along with an assessment of new information - Includes coverage of groundbreaking areas, including the artificial LDL particle, the development of a new anti-erectile dysfunction agent, a vaccine for atherosclerosis, coronary calcification associated with red wine, and the interplay of endoplasmic reticulum/oxidative stress - Explores the genetic features of endothelium and the interaction between basic knowledge and clinical syndromes
Author: Xin J. Zhou Publisher: Cambridge University Press ISBN: 1316613984 Category : Medical Languages : en Pages : 691
Book Description
An algorithmic approach to interpreting renal pathology, updated in light of recent advances in understanding and new classification schemes.
Author: Z.-H. Liui Publisher: Karger Medical and Scientific Publishers ISBN: 3318026514 Category : Science Languages : en Pages : 274
Book Description
The podocyte is a key cell that forms the last barrier of the kidney filtration unit. One of the most exciting developments in the field of nephrology in the last decade has been the elucidation of its biology and its role in the pathophysiology of inherited and acquired glomerular disease, termed podocytopathy. In this publication, world-renowned experts summarize the most recent findings and advances in the field: they describe the unique biological features and injury mechanisms of the podocyte, novel techniques used in their study, and diagnosis and potential therapeutic approaches to glomerular diseases. Due to its broad scope, this publication is of great value not only for clinical nephrologists and researchers, but also for students, residents, fellows, and postdocs.
Author: Pablo A. Ureña Torres Publisher: Springer ISBN: 3319325078 Category : Medical Languages : en Pages : 583
Book Description
Vitamin D deficiency, circulating levels lower than 15 ng/ml, is an epidemic disease worldwide with more than a billion people suffering of it in the beginning of the 21-century. Besides its impact on mineral and bone metabolism, these low vitamin D levels are also associated with a diversity of non-skeletal complications, among them cardiovascular disease, diabetes mellitus, multiple sclerosis, cancer, tuberculosis, and immune system dysfunction. Chronic Kidney Disease is also a very common disease, affecting more than 10% of the world population, ranging from stage 1 to stage 5 before dialysis. Approximately 1% of the population in industrialized countries is affected by end-stage renal disease (ESRD), needing a renal replacement therapy either hemodialysis or peritoneal dialysis, and ultimately by renal transplantation. Those CKD patients are more susceptible to exhibit reduced vitamin D stocks. Consequently, more than eighty percent of CKD patients have either insufficient or deficient vitamin D levels for multiple reasons.
Author: David M. Pollock Publisher: Morgan & Claypool Publishers ISBN: 1615042105 Category : Medical Languages : en Pages : 91
Book Description
The discovery of a potent vasoconstrictor, endothelin (ET)-1, derived from vascular endothelial cells was among a variety of key lines of investigation that helped to fuel a major explosion of studies related to endothelial cell biology. This was particularly evident within the pharmaceutical industry where receptor antagonists were quickly developed and are now on the market for treatment of pulmonary hypertension and in development for other diseases such as diabetic nephropathy and cancer. Importantly, we know that the kidney contains the highest level of ET-1 production and receptor expression in the body where it has been demonstrated to function as a pro-natriuretic autocrine and paracrine factor that is activated in conditions of high salt intake. This eBook provides a review of the various mechanisms whereby ET-1 has been shown to function within the kidney through a wide range of actions that include direct effects on tubular transport, intrarenal hemodynamics, as well as neural and endocrine functions. Much has yet to be discerned, but it is clear that the ET system is a major physiological regulator of fluid-electrolyte balance and blood pressure through these renal actions. Table of Contents: Discovery of Endothelin / Basic Biology of the Endothelin System / Renal Localization / Renal Hemodynamics / Renal Tubular Actions of Endothelin / Endothelin in Neural Modulation of Renal Function / Physiological Role of Endothelin / Endothelin in Renal Pathology / References / Author Biographies
Author: David Abraham Publisher: Springer Science & Business Media ISBN: 0857299204 Category : Medical Languages : en Pages : 268
Book Description
Translational medicine underpins vascular medicine. It is fundamental to understanding how we treat patients with vascular disease and more importantly, how to prevent it. It is the rationale for drug design and production. Vascular medicine and translational medicine will take over and become the main reason for referring patients to hospital. Therefore, hospital-based clinicians working with basic scientists need to know about translational medicine, which educates and informs them about vascular medicine and how management should be based. This book is a primer for translational vascular medicine and discusses the evolving and exciting areas of basic science applied to vascular medicine. The book is based on the third vascular biology conference held at The Royal College of Physicians in 2008. It provides a large amount of new basic and clinical information and the contributors are world leaders.
Author: Ulla Kopp
Author: Ulla Kopp
Author: Michel Félétou
Author: Vinood B. Patel
Author: Denis F. Geary
Author: Protasio L. Da Luz
Author: Xin J. Zhou
Author: Z.-H. Liui
Author: Pablo A. Ureña Torres
Author: David M. Pollock
Author: David Abraham