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Books > Medicine > Pre-clinical medicine: basic sciences > Physiology
This book discusses the application of the concepts of fractals and chaos to biomedical phenomena. In particular, it argues against the outdated notion of homeostasis; using biomedical data sets and modern mathematical concepts, the author attempts to convince the reader that life is at least a homeodynamic process with multiple states - each being capable of survival. Although relying heavily on the new mathematical ideas, the author has attempted to make the book self-contained. The mathematics is developed in a biological context and mathematical formulation for its own sake is avoided. In this book, the phenomena to be explained motivate the mathematical development rather than the other way round.
This book discusses the application of the concepts of fractals and chaos to biomedical phenomena. In particular, it argues against the outdated notion of homeostasis; using biomedical data sets and modern mathematical concepts, the author attempts to convince the reader that life is at least a homeodynamic process with multiple states - each being capable of survival. Although relying heavily on the new mathematical ideas, the author has attempted to make the book self-contained. The mathematics is developed in a biological context and mathematical formulation for its own sake is avoided. In this book, the phenomena to be explained motivate the mathematical development rather than the other way round.
Investigation of the mechanisms of cellular response to different mechanical stimuli, as well as mechano-electrical feedback (MEF) in the intact heart is one of the main topics in fundamental and clinical cardiology. The present volume of "Mechanosensitivity in Cells and Tissues: Mechanosensitivity of the Heart" c- bines excellent reviews written by worldwide leaders in this ?eld. The 3rd volume is a great addition to this excellent series of books edited by Andre Kamkin and Irina Kiseleva. This volume successfully combines reviews, aimed at academic, physiology and clinical cardiology communities, devoted to mechanosensitivity of the normal and diseased heart at the ion channel, cell, tissue and organ levels. Kamkin and Kiseleva have made signi?cant contributions to the investigation of mechanosentive ion channels in cardiomyocytes and ?broblasts. Their ba- ground, in addition to extensive collaborations helped them to ?nd and consolidate valuable research ?ndings from prominent specialists in the ?eld of cardiac mechanosensitivity. In the last decade, interest in the role of MEF in the heart has increased sign- cantly. MEF within cardiac tissue is a complex phenomenon in which electroph- iological changes are triggered by myocardial stretch. This phenomenon has been studiedintheclinicalcommunityforoveracenturyandmayhavebothpro-rhythmic and arrhythmogenic consequences. While signi?cant advances have been made in understanding of the effects of mechanical forces on cardiac cells, many questions remain regarding the mechanisms whereby mechanical forces are transduced into changes which alter the behavior of various cardiac cells.
This handbook provides insights into becoming a better and more evolved athlete. It offers aspiring athletes, regardless of skill level, a better understanding of their bodies and how to unlock the unlimited potential of muscles without injury. It focuses on the "superhero" muscle: the iliopsoas, and also sheds light on Diamond-Corporation's new technology and elite athleticism, and how these can contribute to a healthier life. Lastly, the authors explore the mindset of success and provide exercises for remaining calm under pressure. This stand-alone book is the sequel to Paradigm Shift for Future Tennis and Enhancing Performance and Reducing Stress in Sport (2014, Springer). This book is written by scientists, whose expertise collectively spans the fields of biomechanics, clinical surgery, current and former elite athleticism, engineering and naturopath doctoral work. Together, they aim to inspire and educate athletes on how to improve their sports performance by using new technologies, world class biomechanics knowledge and ancient herbal medicines.
Learn about the human body from the inside out Some people think that knowing about what goes on inside the human body can sap life of its mystery which is too bad for them. Anybody who's ever taken a peak under the hood knows that the human body, and all its various structures and functions, is a realm of awe-inspiring complexity and countless wonders. The dizzying dance of molecule, cell, tissue, organ, muscle, sinew, and bone that we call life can be a thing of breathtaking beauty and humbling perfection. Anatomy & Physiology For Dummies combines anatomical terminology and function so you'll learn not only names and terms but also gain an understanding of how the human body works. Whether you're a student, an aspiring medical, healthcare or fitness professional, or just someone who's curious about the human body and how it works, this book offers you a fun, easy way to get a handle on the basics of anatomy and physiology. * Understand the meaning of terms in anatomy and physiology * Get to know the body's anatomical structures from head to toe * Explore the body's systems and how they interact to keep us alive * Gain insight into how the structures and systems function in sickness and health Written in plain English and packed with beautiful illustrations, Anatomy & Physiology For Dummies is your guide to a fantastic voyage of the human body.
The human brain contains more than a billion neurons which interconnect to form networks that process, store, and recall sensory information. These neuronal activities are supported by a group of accessory brain cells coll- tively known as neuroglia. Surprisingly, glial cells are ten times more - merous than neurons, and occupy more than half the brain volume (Hyden, 1961). Although long considered a passive, albeit necessary, component of the nervous system, many interesting and unusual functional properties of glial cells are only now being brought to light. As a result, the status of these cellular elements is approaching parity with nerve cells as a subject for experimental study. The term glia (or glue) seems today to be a misnomer in view of the diverse functions attributed to glial cells. Experimental studies in the last three decades have clearly established that the behavior of glial cells is far from passive, and that they are at least as complex as neurons with regard to their membrane properties. In addition, glial cells are of importance in signal processing, cellular metabolism, nervous system development, and the pathophysiology of neurological diseases. The Muller cell of the ver- brate retina provides a splendid example of an accessory cell that exhibits features illustrating every aspect of the complex behavior now associated with glial cells.
Ligand-gated ion channels mediate fast synaptic transmission in the central nervous s- tem (CNS) and at ganglionic and neuromuscular synapses. The nicotinic acetylcholine - ceptor (nAChR) is a member of the ligand-gated ion channel superfamily, which includes the 5-HT , glycine and GABA type A and C receptors. These receptors are known as Cys- 3 loop receptors, as all of them have a conserved sequence containing a pair of cysteines separated by 13 residues and linked by a disulfide bridge. nAChRs can be divided into two groups: muscle receptors, which are found at the skeletal neuromuscular junction where they mediate neuromuscular transmission, and neuronal receptors, which are found throughout the peripheral and central nervous system. Many of the early studies carried out on the subunit composition and structure of the nAChRs were performed on receptors isolated from the electric organ of Torpedo californica, as this tissue is very rich in nAChRs, and they were found to have a high degree of homology with the embryonic v- tebrate muscle type receptor. Muscle nAChRs are made up of five subunits arranged around a central pore (Fig. 1A, B). In Torpedo electric organ and vertebrate fetal muscle, the subunit composition is (a1) b1gd, and in adult muscle the g subunit is replaced by the e to give an (a1)b1ed 2 2 composition (Mishina et al. 1986).
The International Symposium on Prostaglandins and Related Compounds, first held in Vienna 1972, revisited the city after 24 years for the 10TH Symposium. For the many re searchers working in this multi-disciplinary field it was an opportunity to exchange their ex periences and share new data with colleagues from all around the world. This scientific exchange was largely encouraged by the unseasonably cold and rainy weather. For the first time, there was quite a large attendance from the former Communist countries. Eugene Garfield prepared a key note address delivered during the meeting (The Sci entist 1996, 12) reviewing the contribution of the Nobel Laureates U.S. von Euler, l.R. Vane, S.K. Bergstrom, and B.I. Samuelsson, discussing the relevance of the more than 40,000 pa pers in this area published since 1991. Overall, there is still a rapidly growing interest, and in particular a great variety of clinical applications of this family of compounds which were dis cussed in detail during the meeting. Beside the lectures there were 19 workshops covering nearly all the topics of key in terest. All the speakers were invited to prepare a manuscript which has resulted in the volume now in your hands. Special thanks to Dr. Patrick Wong and the new publisher of this series who helped to publish the proceedings in the usual quality and reasonable period of time. Looking forward to seeing all of you again in Florence in 1999, hopefully with much more sun."
This book approaches the classification, pathogenesis, diagnostic, therapy and surgery for kidney tuberculosis as well as male genital tuberculosis. The reader will find recent data on epidemiology, many interesting history cases with illustrations and new methods for the identification of Mycobacterium tuberculosis.
This volume contains selected papers presented at the Sendai International Sympo sium on Molecular and Cellular Mechanisms of Cardiovascular Regulation held from May 10-12, 1995, to honor the contributions ofProfessorNorio Taira, Chairman of the Department of Pharmacology (1972-1995), Tohoku University School of Medicine, Sendai, Japan. The Department of Pharmacology at Sendai has a long tradition of significant contribution to the development of drug therapy for cardiovascular diseases. The late Professor Koroku Hashimoto, the predecessor of Professor Norio Taira, first suggested the mode of action of calcium antagonists and their potential usefulness in therapy of ischemic heart disease and hypertension at an early stage of their development. The need for greater understanding of the pathophysiology of cardiovascular dis eases is more critical now than ever before because modern advances in basic and clinical sciences have prolonged the average life expectancy. Using a wide range of molecular and electrophysiological techniques, major advances are occurring frequently in the field of cardiovascular physiology and pharmacology. Such multifaceted approaches are preferred because human cardiovascular diseases are complex, requiring multiple interventions and an in-depth understanding of molecular mechanisms underlying the disease. The first section of this book focuses on molecular mechanisms of ion channel regulation. Eight of ten chapters in this section are devoted to the recent advances in molecular characterization and regulation of various types of potassium channels in cardiac, vascular, and neuronal tissues. A discussion of the structure and function of sodium and calcium channels is also included.
Carbonic anhydrase (CA) is a seemingly ubiquitous enzyme of profound physiological importance, which plays essential roles in respiration, acid-base homeostasis, bone resorption, calcification, photosynthesis, several biosynthetic pathways and a variety of processes involving ion, gas and fluid transfer. This enzyme, which is present in at least three gene families (a, ss, ?), has found favour as a model for the study of evolution of gene families and for site-directed mutagenesis in structure/function relationships, for protein folding and for transgenic and gene target studies. Since the early use of CA inhibitors as diuretics and in treating congestive heart failure, the enzyme has been target of considerable clinical attention. Much of this is now focused on endeavours to produce a new generation of such drugs for the effective treatment of glaucoma and other potential applications. Recent data, suggesting links between CA and various disease processes, including cancer, have stimulated further...
David Kuter and a host of leading international researchers summarize in one volume all the knowledge of thrombopoietins (TPO) available today. The distinguished experts review the history of the search to discover TPO, describe the molecular and biological characteristics of this new molecule, and present the results of the preclinical animal experiments that will guide clinical use of this new hormone. Along the way they provide the most recent and comprehensive guide to the biology of megakaryocytes and platelets.
This two-volume set focuses on the interface between physiologic mechanisms and diagnostic human engineering. Today numerous biomedical sensors are commonplace in clinical practice. The registered biosignals reflect mostly vital physiologic phenomena. In order to adequately apply biomedical sensors and reasonably interpret the corresponding biosignals, a proper understanding of the involved physiologic phenomena, their influence on the registered biosignals, and the technology behind the sensors is necessary. The first volume is devoted to the interface between physiologic mechanisms and arising biosignals, whereas the second volume is focussed on the interface between biosignals and biomedical sensors. The physiologic mechanisms behind the biosignals are described from the basic cellular level up to their advanced mutual coordination level during sleep. The arising biosignals are discussed within the scope of vital physiologic phenomena to foster their understanding and comprehensive analysis.
This monograph covers the entire field of blood group serology, with its main emphasis on the chemical and biochemical basis of blood group specificity. Full consideration is given to molecular biology investigations, in particular to studies on the structure of blood group genes and the molecular biological basis of alleles and rare blood group variants, whereby relevant literature up to the year 2000 is covered. The text is supplemented by numerous illustrations and tables, and detailed reference lists.
As discussed in this book, a large body of evidence indicates that selenium is a cancer chemopreventive agent. Further evidence points to a role of this element in reducing viral expression, in preventing heart disease, and other cardiovascular and muscle disorders, and in delaying the progression of AIDS in HIV infected patients. Selenium may also have a role in mammalian development, in male fertility, in immune function and in slowing the aging process. The mechanism by which selenium exerts its beneficial effects on health may be through selenium-containing proteins. Selenium is incorporated into protein as the amino acid selenocysteine. Selenocysteine utilizes a specific tRNA, a specific elongation factor, a specific set of signals, and the codeword, UGA, for its cotranslational insertion into protein. It is indeed the 21st naturally occurring amino acid to be incorporated into protein and marks the first and only expansion of the genetic code since the code was deciphered in the mid 1960s.
Itisonlyrecently thatthe naturaloccurrenceoffree radicalsin biological tissue has become widely accepted, and that the suspi- cion with which biologists previously viewed the free radicals of radiationchemistryhas beenplacedin a broaderperspective. Now, oxygen-derived free radicals are considered respectable biochemi- cal intermediates, given always the caveat that unwanted tissue damage may arise if these active species are produced in such abundance that they overwhelm the natural antioxidant and free- radical defense mechanisms, or if these systems have become hypoeffective. Many factors, including several dietary manipula- tions, can lead toelevatedproductionofsuperoxide and may result in free radical overload, whereas a deficiency of those micronutri- ents associated with the antioxidant defense mec.hanisms may re- sult in substantially diminished antioxidant capacity. By now, antioxidants have become a household word and al- most everyone is aware of their imponance in protecting the body against attack by active oxygen species. Indeed, it is a paradox of nature that oxygen, which is so essential to sustain aerobic life, ul- timately contributes to its destruction. Not surprisingly, recogni- tion ofthis dilemma has generated a spate ofantioxidant strategies intended to reduce the risk of tissue damage by rampant oxygen radicals, some sadly based less on science than on speculation.
This book is an accessible collection of case study scenarios ideal for physiology and pharmacology revision for pharmacy, medical, biomedical science, clinical science and healthcare students. Clearly structured and organized by major organ system, the book emphasises ways in which key signs and symptoms of disease inform diagnosis and the choice of treatment, together with the relevant pharmacological mechanisms. Each chapter has a clinical focus and includes clear learning outcomes, key points and model answers with detailed explanations designed to enhance students' understanding of the physiology and pharmacology underpinning each case study scenario. 50 topics are covered and the cases presented include an extensive range of psychological, neurological, endocrine, cardiovascular, respiratory, renal, gastrointestinal and reproductive disorders, their symptoms, complications and usual treatment along with the actions and uses of some widely- used drugs.* An essential revision text designed to help students apply their theoretical knowledge to real-life cases* Realistic case studies focusing on commonly occurring conditions and diseases* Model answers throughout* Learning outcomes provided at the beginning of each chapter* Key learning points presented in the cases follow each model answer* Helps students to understand the relevance and clinical implications of the topics studied in physiology and pharmacology courses* Reinforces major concepts and definitions* Includes a glossary with a full list of drugs and disorders to support the text
Beginning in 1970, the International Bile Acid Meeting has taken place every two years and each time new progress in our understanding of the complex role of bile acids in many metabolic processes of the liver and the intestine has been revealed by a selected group of leading scientists from all over the world. Although originally mainly physiological data on bile acid synthesis and transport were emphasized, and later on also the therapeutic benefit of bile acids in gallstone disease and cholestasis was discovered, we have come now to the molecular biology and genetic era with major discoveries in transport defects and related diseases. This book is the proceedings of Falk Symposium No. 120, held in The Hague, The Netherlands, on October 12-13, 2000 - the 16th International Bile Acid Meeting. One of the main discoveries recently has been the identification of nuclear receptors for bile acids, which gives them a much broader perspective than previously anticipated. It even suggests that bile acids can regulate their biosynthesis and enterohepatic circulation transcriptionally. It will therefore not be surprising that this topic, together with the molecular regulation of cholesterol 7alpha-hydroxylase and cholesterol homeostasis, has a dominant place in these proceedings. Another important topic is the progress in our molecular understanding of hepatic (both at the basolateral and canalicular sites), cholangiocytic and intestinal bile acid transport processes. Further insights into genetic defects causing cholestasis or intestinal malabsorption in animal models and in human diseases are also discussed by a number of well-known authors. Finally the last section deals with new findings on the role of bile acid therapy in cholestatic syndromes or chemoprevention and with the potential benefit of bile acid inhibitors. All contributors provide an update on the most recent developments in their field.
Ultradian rhythms play an essential part at all levels of biological organization, providing timekeeping for intracellular processes, playing various roles in intracellular signalling systems and underpinning coherent behaviour in tissues and organs. They are crucial to endocrine and neural performance and in psychobiology. This book brings together the evidence for these findings. In lower eukaryotes short-period rhythms (period 30-70 min) are coupled to an ultradian clock which serves as a central timekeeper. In metazoans, similar rhythms are necessary for intercell communications, and temporal coupling for the coordination of integrated functions of tissues and organs to provide "homeodynamics" of the whole organism. Electrical, endocrine and behavioural rhythms characterize both wakefulness and sleep; pathologically disordered states give rise to dynamic diseases. Chapters on human movements, sleep, attention span and alertness indicate the broad span of this subject. A continuum can now be traced from the molecular genetic, through the cellular and neuroendocrine to the behavioural and psychosocial levels. Many of the results presented in this book are recent and novel, and have far-reaching consequences for our understanding of health and disease. Our first book (published 15 years ago) ended with" Epilogue: The Unification Hypothesis of Chronobiology-Psychobiology from Molecule to Mind." In retrospect we can now recognise how this epilogue was a prescient vision of what is now the cutting edge of epigenetics, bioinformatics, systems biology, neuroscience, and the new sciences of consciousness that are the foundation for the emerging vision of life and philosophy in ourcurrent era. Each of the four parts of this book are successive iterations towards this new integration of the life sciences from molecule to mind and spirit in the emergent ethos of the future.
The role of oxidative stress in human disease has become an area of intense interest. Free radicals, a normal product of metabolism, exist in all aerobic cells in balance with biochemical antioxidants. Environmental stress increases the levels of free radicals drastically, thereby disturbing the equilibrium between free radical production and the antioxidant capability causing oxidative stress. Over the years, ROS has been implicated in the pathologies of various diseases like cancer, neurological disorder, cardiovascular diseases rheumatoid arthritis, diabetes etc. This book provides an in depth critical state-of-art reviews from established investigators on free radicals, ROS associated pathogenesis of human diseases, biomarkers of oxidative damage, antioxidants, phytonutrients and other related health concerns of modern society. The present book is aimed at graduate students, researchers in academia, industry and clinicians with the interest in redox biology. Special attention has been devoted to the topic of ROS signalling, oxidative stress induced human pathologies & antioxidative therapies. The book consists of four parts in specified topics based on the current literatures for the better understanding of the readers with respect to their subject-wise interests. The first section of the book provides an overview about the ROS production and their measuring tools and techniques followed by the mechanisms involved in the oxidative stress in the second section. The third section describes the involvement of oxidative stress in different human diseases and the last section focuses on the different strategies to ameliorate oxidative stress induced stress.
Most of the clinical trials initiated to promote neovascularization of ischemic myocardial or peripheral muscle tissue have failed to provide significant improvement of prespecified endpoints. This volume examines current refinements in the fundamental concept of neovascularization. It describes the most recent developments, which in the future might pave the way towards a new era of therapeutic applications. Coverage includes sections on such topics as the clinical challenge, novel mechanical and molecular concepts and cell therapy as an option, each composed of chapters written by experts in their fields.
th This volume contains selected lectures presented at the 12 International Conference on Advances in Prostaglandin, Leukotriene and Other Bioactive Lipid Research: Basic Science and Clinical Applications which was held in Istanbul, Turkey, on August 25-29, 2002. This meeting brought together basic and clinical scientists for the purpose of discussing advances in bioactive lipid research with.special attention to cancer, cardiovascular diseases, gastrointestinal diseases and respiratory diseases. Topics covered included: the role of leukotrienes and lipoxins in of inflammation, the cytochrome P450 pathway, the genetics and genomics bioactive lipids, lipid peroxidation, apoptosis, angiogenesis, isoprostanes, receptors and inhibitors, cyclooxygenase and lipoxygenase pathways and inhibitors, prostaglandin synthases and receptor signaling, phospholipases and inhibitors. Sessions included plenary lectures with expertise in particular areas, oral presentation on selected topics and general poster sessions. J.M. Drazen (Boston, USA) discussed anti-leukotriene treatment in asthma patients while C. Brink (paris, France) presented the recent advances in leukotriene receptors. The recent advances in cytochrome p450 pathway described in the session organized by J.C. McGiff (Valhalla, NY, USA). T. Shimizu (Tokyo, Japan) and M. Balazy (Valhalla, NY, USA) gave an update on phospholipases and arachidonic acid peroxydation. The editors are greatful to the Organizing, Programme and Advisory Committees for their valuable contributions. We greatfully acknowledge the generous financial support provided by PharmaciaIPfizer, Fako Pharmaceuticals Inc. and Novartis Pharmaceuticals Inc. ofthe contributors to this volume, in particular We are also greatful to all to those who delivered their manuscripts by or before the requested deadline.
Is it advisable to go back from bedside to the bench? During the last decade, few topics encountered such a broad interest in bio- gy and medicine as angiogenesis. The amazing ability of the body to restore blood flow by induction of blood vessel growth as part of an adaptive process has alarmed physicians dealing with diseases in which angiogenesis is either exaggerated (as in tumors) or too slow (as in ischemic diseases of heart and brain). Not surprisingly, pro- and antiangiogenic strategies have found their way into clinical trials. For instance, for the USA, the NIH website in early 2004 displayed 38 clinical studies involving either pro- or antiangiogenic th- apies. Given the expected overwhelming wealth of clinical data, the question may be asked whether further exploration of biological mechanisms is required or whether results from the bedside are instructive enough to proceed. This question depends also on the progress of pro- and antiangiogenic clinical trials. In the following, I give a short overview about some of the progress that has been made in this field. Since Judah Folkman proposed antiangiogenic tumor therapy thirty years ago, it has become increasingly evident that agents which interfere with blood vessel formation also block tumor progression. Accordingly, antiangiogenic therapy has gained much attention as a potential adjunct to conventional c- cer therapy. |
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