Download or read book Physiological and Pathological Responses to Hypoxia and High Altitude Volume II written by Rodrigo Iturriaga and published by Frontiers Media SA. This book was released on 2022-09-14 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physiological and Pathological Responses to Hypoxia and High Altitude written by Rodrigo Iturriaga and published by Frontiers Media SA. This book was released on 2020-06-22 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: The appearance of photosynthetic organisms about 3 billion years ago increased the partial pressure of oxygen (PO2) in the atmosphere and enabled the evolution of organisms that use glucose and oxygen to produce ATP by oxidative phosphorylation. Hypoxia is commonly defined as the reduced availability of oxygen in the tissues produced by different causes, which include reduction of atmospheric PO2 as in high altitude, and secondary to pathological conditions such as sleep breathing and pulmonary disorders, anemia, and cardiovascular alterations leading to inadequate transport, delivery, and exchange of oxygen between capillaries and cells. Nowadays, it has been shown that hypoxia plays an important role in the genesis of several human pathologies including cardiovascular, renal, myocardial and cerebral diseases in fetal, young and adult life. Several mechanisms have evolved to maintain oxygen homeostasis. Certainly, all cells respond and adapt to hypoxia, but only a few of them can detect hypoxia and initiate a cascade of signals intended to produce a functional systemic response. In mammals, oxygen detection mechanisms have been extensively studied in erythropoietin-producing cells, chromaffin cells, bulbar and cortical neurons, pulmonary neuroepithelial cells, smooth muscle cells of pulmonary arteries, and chemoreceptor cells. While the precise mechanism underpinning oxygen, sensing is not completely known several molecular entities have been proposed as possible oxygen sensors (i.e. Hem proteins, ion channels, NADPH oxidase, mitochondrial cytochrome oxidase). Remarkably, cellular adaptation to hypoxia is mediated by the master oxygen-sensitive transcription factor, hypoxia-inducible factor-1, which can induce up-regulation of different genes to cope the cellular effects related to a decrease in oxygen levels. Short-term responses to hypoxia included mainly chemoreceptor-mediated reflex ventilatory and hemodynamic adaptations to manage the low oxygen concentration while more prolonged exposures to hypoxia can elicit more sustained physiological responses including switch from aerobic to anaerobic metabolism, vascularization, and enhancement of blood O2 carrying capacity. The focus of this research topic is to provide an up-to-date vision on the current knowledge on oxygen sensing mechanism, physiological responses to acute or chronic hypoxia and cellular/tissue/organ adaptations to hypoxic environment.
Download or read book Hypoxia written by Robert C. Roach and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 455 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hypoxia is a constant threat throughout life. International experts from many different fields, including clinicians, clinical researchers, and basic scientists, have contributed to this volume, presenting state-of-the-art information regarding normal and abnormal (pathophysiological) responses to hypoxia. The topics covered include visitors to high altitude, the latest developments on high-altitude cerebral and pulmonary edema, the brain in hypoxia, high-altitude headache, and similarities between ischemic and hypoxic injury to the brain. In addition topics are covered such as blood-brain barrier in hypoxia, hypoxia interactions with vascular growth, and how humans adjust to extreme hypoxia.
Download or read book High Altitude written by Erik R. Swenson and published by Springer Science & Business Media. This book was released on 2013-11-26 with total page 495 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the last decade the science and medicine of high altitude and hypoxia adaptation has seen great advances. High Altitude: Human Adaptation to Hypoxia addresses the challenges in dealing with the changes in human physiology and the particular medical conditions that arise from exposure to high altitude. In-depth and comprehensive chapters cover both the basic science and the clinical consequences of exposure to high altitude. Genetic, cellular, organ and whole body system responses to high altitudes are covered and chapters discuss these effects on a wide range of diseases. Expert authors provide insight into the care of patients with pre-existing medical conditions that fail in some cases to adapt as well as offer insights into how high altitude research can help critically ill patients. High Altitude: Human Adaptation to Hypoxia is an important new volume that offers a window into greater understanding and more successful treatment of hypoxic human diseases.
Download or read book Regulation of Tissue Oxygenation Second Edition written by Roland N. Pittman and published by Biota Publishing. This book was released on 2016-08-18 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt: This presentation describes various aspects of the regulation of tissue oxygenation, including the roles of the circulatory system, respiratory system, and blood, the carrier of oxygen within these components of the cardiorespiratory system. The respiratory system takes oxygen from the atmosphere and transports it by diffusion from the air in the alveoli to the blood flowing through the pulmonary capillaries. The cardiovascular system then moves the oxygenated blood from the heart to the microcirculation of the various organs by convection, where oxygen is released from hemoglobin in the red blood cells and moves to the parenchymal cells of each tissue by diffusion. Oxygen that has diffused into cells is then utilized in the mitochondria to produce adenosine triphosphate (ATP), the energy currency of all cells. The mitochondria are able to produce ATP until the oxygen tension or PO2 on the cell surface falls to a critical level of about 4–5 mm Hg. Thus, in order to meet the energetic needs of cells, it is important to maintain a continuous supply of oxygen to the mitochondria at or above the critical PO2 . In order to accomplish this desired outcome, the cardiorespiratory system, including the blood, must be capable of regulation to ensure survival of all tissues under a wide range of circumstances. The purpose of this presentation is to provide basic information about the operation and regulation of the cardiovascular and respiratory systems, as well as the properties of the blood and parenchymal cells, so that a fundamental understanding of the regulation of tissue oxygenation is achieved.
Download or read book High Altitude Physiology and Medicine written by W. Brendel and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: High altitude physiology and medicine has again become important. The excep tional achievements of mountaineers who have climbed nearly all peaks over 8,000 m without breathing equipment raise the question of maximal adaptation ca pacity of man to low oxygen pressures. More importantly, the increase in tourism in the Andes and the Himalayas brings over 10,000 people to sites at altitudes above 4,000 and 5,000 m each year. At such heights several kinds of high alti tude diseases are likely to occur, and these complications require detailed medical investigations. Medical authorities need to inform both mountaineers and tourists as to how great a physical burden can be taken in the mountain environment without risk to health. Physicians need to know what kind of prophylaxis is to be employed at high altitudes to prevent the development of diseases and what therapeutic measures should be used once high altitude diseases have occurred. Moreover, the physical condition of the indigenous population living at higher altitudes such as the Andes and the Himalayas, who are exposed continuously to the stress of high altitude, requires our attention. We have become familiar with symptoms characteristic of chronic high-altitude disease: under special conditions this popu lation has a tendency to develop pulmonary hypertension, which is associated with pulmonary edema, pulmonary congestion, and right heart failure.
Download or read book Plant Responses to Hypoxia written by Elena Loreti and published by MDPI. This book was released on 2021-03-02 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Molecular oxygen deficiency leads to altered cellular metabolism and can dramatically reduce crop productivity. Nearly all crops are negatively affected by a lack of oxygen (hypoxia) due to adverse environmental conditions such as excessive rain and soil waterlogging. Extensive efforts to fully understand how plants sense oxygen deficiency and their ability to respond using different strategies are crucial to increase hypoxia tolerance. Progress in our understanding has been significant in recent years. This topic certainly deserves more attention from the academic community; therefore, we have compiled a series of articles reflecting the advancements made thus far.
Download or read book Oxygen Sensing written by and published by Elsevier. This book was released on 2004-05-10 with total page 867 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ability of cells to sense and respond to changes in oxygenation underlies a multitude of developmental, physiological, and pathological processes. This volume provides a comprehensive compendium of experimental approaches to the study of oxygen sensing in 48 chapters that are written by leaders in their fields.
Download or read book Hypoxia written by Robert C. Roach and published by Springer Science & Business Media. This book was released on 2002-01-31 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hypoxia remains a constant threat throughout life. It is for this reason that the International Hypoxia Society strives to maintain a near quarter century tradition of presenting a stimulating blend of clinical and basic science discussions. International experts from many fields have focused on the state-of-the-art discoveries in normal and pathophysiological responses to hypoxia. Topics in this volume include gene-environment interactions, a theme developed in both a clinical context regarding exercise and hypoxia, as well as in native populations living in high altitudes. Furthermore, experts in the field have combined topics such as skeletal muscle angiogenesis and hypoxia, high altitude pulmonary edema, new insights into the biology of the erythropoietin receptor, and the latest advances in cardiorespiratory control in hypoxia. This volume explores the fields of anatomy, cardiology, biological transport, and biomedical engineering among many others.
Download or read book Committee on Military Nutrition Research written by Institute of Medicine and published by National Academies Press. This book was released on 1999-08-04 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: The activities of the Food and Nutrition Board's Committee on Military Nutrition Research (CMNR, the committee) have been supported since 1994 by grant DAMD17-94-J-4046 from the U.S. Army Medical Research and Materiel Command (USAMRMC). This report fulfills the final reporting requirement of the grant, and presents a summary of activities for the grant period from December 1, 1994 through May 31, 1999. During this grant period, the CMNR has met from three to six times each year in response to issues that are brought to the committee through the Military Nutrition and Biochemistry Division of the U.S. Army Research Institute of Environmental Medicine at Natick, Massachusetts, and the Military Operational Medicine Program of USAMRMC at Fort Detrick, Maryland. The CMNR has submitted five workshop reports (plus two preliminary reports), including one that is a joint project with the Subcommittee on Body Composition, Nutrition, and Health of Military Women; three letter reports, and one brief report, all with recommendations, to the Commander, U.S. Army Medical Research and Materiel Command, since September 1995 and has a brief report currently in preparation. These reports are summarized in the following activity report with synopses of additional topics for which reports were deferred pending completion of military research in progress. This activity report includes as appendixes the conclusions and recommendations from the nine reports and has been prepared in a fashion to allow rapid access to committee recommendations on the topics covered over the time period.
Download or read book Time domains of hypoxia adaptation Evolutionary insights and applications volume II written by Tatum S. Simonson and published by Frontiers Media SA. This book was released on 2023-07-06 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Exercise Physiology written by Ricardo Ferraz and published by BoD – Books on Demand. This book was released on 2022-11-30 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Exercise physiology is one of the most researched sports sciences, with practical implications for health, well-being and sports performance. This book brings together emerging research in this area, presenting the main findings and criticisms, as well as considering the future of exercise physiology.
Download or read book Endurance Sports Medicine written by Timothy L. Miller and published by Springer Nature. This book was released on 2023-06-18 with total page 439 pages. Available in PDF, EPUB and Kindle. Book excerpt: Providing a fresh update of this continuously evolving branch of sports medicine, this comprehensive yet practical guide focuses specifically on the treatment of athletes who train for and participate in endurance sporting events, including not only traditional endurance athletes such as runners, swimmers, bikers and triathletes, but also rowers, adventure racers, military personnel and cross-fit athletes. Detailing strategies for not only treating and preventing injuries and conditions but also for optimizing an athlete’s performance, this book is divided into three thematic sections. The first section covers common medical conditions faced by the endurance athlete, including cardiovascular conditions, asthma, and heat- and altitude-related illnesses, while also discussing gender differences, pregnancy and the pediatric and masters endurance athlete. Section two focuses on the management of common musculoskeletal conditions, such as stress fractures, overuse injuries of the soft tissue, shoulder and hip injuries, and exercise and osteoarthritis; this section now includes discussion of the use of cutting-edge orthobiologics. The last section presents performance optimization and event coverage, including gait and swim-stroke analysis, bike fitting, resistance training, mental preparation, optimizing nutrition, and how to organize medical coverage for events, as well as decision-making for return to play. Completely updated and including brand new chapters, Endurance Sports Medicine, Second Edition remains a valuable guide for sports medicine physicians, orthopedists, athletic trainers, physical therapists, coaches, officials, and athletes in understanding the needs of the determined individuals who participate in endurance sports.
Download or read book Basic Physiology for Anaesthetists written by David Chambers and published by Cambridge University Press. This book was released on 2019-07-25 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt: Easily understood, up-to-date and clinically relevant, this book provides junior anaesthetists with an essential physiology resource.
Download or read book Nutritional Needs in Cold and High Altitude Environments written by Institute of Medicine and published by National Academies Press. This book was released on 1996-05-15 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the research pertaining to nutrient requirements for working in cold or in high-altitude environments and states recommendations regarding the application of this information to military operational rations. It addresses whether, aside from increased energy demands, cold or high-altitude environments elicit an increased demand or requirement for specific nutrients, and whether performance in cold or high-altitude environments can be enhanced by the provision of increased amounts of specific nutrients.
Download or read book Research Grants Index written by National Institutes of Health (U.S.). Division of Research Grants and published by . This book was released on 1975 with total page 1224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Encyclopedia of Sleep written by and published by Academic Press. This book was released on 2013-01-17 with total page 2626 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a world of 24-hour media saturation, sleep has become an increasingly fraught enterprise. The award-winning four-volume Encyclopedia of Sleep, Four Volume Set is the largest reference, either online or in print, on the subject of sleep. Written to be useful for the novice and the established researcher and clinician, Topic areas will include sleep across the life cycle and in other species, sleep and women, sleep and the elderly, pediatric sleep, sleep deprivation and loss, sleep mechanisms, sleep physiology and pathophysiology, sleep disorders, neurobiology, chronobiology, pharmacology, and impact of other disorders on sleep. Recognizing the many fields that are connected to sleep science, the editorial team has been carefully chosen to do justice to this highly interdisciplinary field of study. The steady growth of researchers and clinicians in the sleep field attests to the continued interest in the scientific study of sleep and the management of patients with sleep disorders, and anyone involved in this exciting field should find this work to be an invaluable reference. 2013 PROSE Award winner for Multivolume Reference in Science from the Association of American Publishers Thoroughly interdisciplinary: looks at sleep throughout the life cycle, with exceptional coverage of basic sleep concepts, the physiology of sleep as well as sleep disorders of all descriptions Excellent coverage of sleep and special populations, covering the lifespan, as well as gender and ethnic differences, among others Chapters focusing on sleep disorders are grouped under the broad categories classified in the ICSD-2 for clear organization so that the reader can effectively access the steps involved in diagnosing and treating these disorders Online version is linked both within the encyclopedia (to related content) and to external sources (such as primary journal content) so that users have easy access to more detailed information if needed
