Download or read book Roles and Functions of ROS and RNS in Cellular Physiology and Pathology written by Neven Zarkovic and published by Mdpi AG. This book was released on 2020-04-21 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our common knowledge on oxidative stress has evolved substantially over the years and has been mostly focused on the fundamental chemical reactions and the most relevant chemical species involved in the human pathophysiology of oxidative stress-associated diseases. Thus, reactive oxygen species and reactive nitrogen species (ROS and RNS) were identified as the key players initiating, mediating, and regulating the cellular and biochemical complexity of oxidative stress either as physiological (acting pro-hormetic) or as pathogenic (causing destructive vicious circle) process. The papers published in this particular Special Issue of the Cells demonstrate the impressive pathophysiological relevance of ROS and RNS in a range of contexts, including the relevance of second messengers of free radicals like 4-hydroxynonenal, allowing us to assume that even more detailed mechanisms of their positive and negative effects lie in wait, and should assist in better monitoring of the major modern diseases and the development of advanced integrative biomedicine treatments.
Download or read book Physiological and Pathological Role of ROS Benefits and Limitations of Antioxidant Treatment written by Sergio Di Meo and published by MDPI. This book was released on 2021-01-21 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: ROS were long considered one of the key players in tissue injury. Indeed, overproduction of ROS results in oxidative stress, a process leading to the development of many pathological conditions. For the treatment of these conditions, the use of antioxidants was proposed. Over time, it was shown that ROS at low concentrations act as signaling molecules, leading to the regulation of physiological functions. Moreover, several interventions that increase ROS generation activate stress-adaptive responses that extend the lifespan. It was also shown that excessive use of antioxidants can counter the beneficial effects of ROS. Currently, much progress has been made in understanding the role of ROS in human diseases and aging, as well as in the regulation of physiological functions, and in identifying the signaling pathways involved in ROS. However, much remains to be understood about the mutual interactions among signaling pathways underlying organisms’ adaptive responses, their modifications (which occur during aging), and some disease states. The aim of this Special Issue is to underline the effects of ROS production and antioxidant treatment in living organisms, focusing on their impact on health, disease, and aging.
Download or read book New Paradigms in Cellular Physiology and Pathology written by Christopher Shelley and published by American Medical Publishers. This book was released on 2023-09-19 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The cell is the basic structural and functional unit of life. Cell physiology refers to the biological study of the various processes that take place in the cell, which keep it alive. In living systems, free radicals such as reactive oxygen species (ROS) and reactive nitrogen species (RNS) play a crucial role in regulating a wide range of cell activities such as autophagy, metabolism, growth and development, solute transport, programmed cell death, and stress responses. Furthermore, ROS and RNS can damage tissues through oxidative stress and tissue dysfunction, and they can also act as molecular messengers for stress responses that are advantageous to the organism. Cellular pathology on the other hand, studies the diseases that occur in the cells, tissues and organs. The primary diagnostic tests that are utilized in cell pathology include cytopathology and histopathology. This book provides an insight into the new paradigms in the research on cellular physiology and pathology. It will serve as a valuable source of reference for graduate and post graduate students.
Download or read book Reactive Oxygen Species ROS in Living Cells written by Filip Cristiana and published by BoD – Books on Demand. This book was released on 2018-05-23 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oxygen represents only 20% of the Earth's atmosphere, yet it is vital for the survival of aerobic organisms. There is a dark part of the use of oxygen that consists in generating reactive species that are potentially harmful to living organisms. Moreover, reactive oxygen species can combine with nitrogen derivatives and generate many other reactive species. Thus, living organisms are continuously assaulted by reactive species from external or internal sources. However, the real danger comes in the case of high concentrations and prolonged exposure to these species. This book presents an image of the mechanisms of action of reactive species and emphasizes their involvement in diseases. Inflammation and cancer are examined to determine when and how reactive species turn the evolution of a benign process to a malignant one. Some answers may come from recent studies indicating that reactive species are responsible for epigenetic changes.
Download or read book Advances in Mitochondrial Medicine written by Roberto Scatena and published by Springer Science & Business Media. This book was released on 2012-03-08 with total page 459 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mitochondria are far more than the “powerhouse” of the cell as they have classically been described. In fact, mitochondria biological activities have progressively expanded to include not only various bioenergetic processes but also important biosynthetic pathways, calcium homeostasis and thermogenesis, cell death by apoptosis, several different signal transduction pathways mainly related to redox control of gene expression and so on. This functional and structural complexity may undergo important derangements so to justify the definition of ‘mitochondrial medicine’, which should include all the clinical consequences of congenital or acquired mitochondrial dysfunctions. There are actually a growing number of studies which assign a significant pathogenic role to damaged mitochondria in different diseases: ischemia/reperfusion injury, neurodegenerative diseases, cancer with its dramatic sequelae (i.e, metastasis), metabolic syndrome, hyperlipidemias, just to mention a few of the most important pathologies. In this context, a further aspect that should not be disregarded is the interaction of pharmacological agents with mitochondria, not only in regard of the toxicological aspects but, above all, of the potential therapeutic applications. In fact, it is interesting to note that, while the properties of different so-called “mitoxicants” are well-known, the subtle linkages between drugs and mitochondria is still in need of a real pharmacological and therapeutic control at the clinical level. This lack of consideration can often lead to an underestimation of unwanted toxic effects but also of desirable therapeutic activities. A reevaluation of the potential clinical role of mitochondria could give a new light on some yet obscure aspects of human pathophysiology.
Download or read book Physiological and Pathological Role of ROS Benefits and Limitations of Antioxidant Treatment written by Sergio Di Meo and published by . This book was released on 2020 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: ROS were long considered one of the key players in tissue injury. Indeed, overproduction of ROS results in oxidative stress, a process leading to the development of many pathological conditions. For the treatment of these conditions, the use of antioxidants was proposed. Over time, it was shown that ROS at low concentrations act as signaling molecules, leading to the regulation of physiological functions. Moreover, several interventions that increase ROS generation activate stress-adaptive responses that extend the lifespan. It was also shown that excessive use of antioxidants can counter the beneficial effects of ROS. Currently, much progress has been made in understanding the role of ROS in human diseases and aging, as well as in the regulation of physiological functions, and in identifying the signaling pathways involved in ROS. However, much remains to be understood about the mutual interactions among signaling pathways underlying organisms' adaptive responses, their modifications (which occur during aging), and some disease states. The aim of this Special Issue is to underline the effects of ROS production and antioxidant treatment in living organisms, focusing on their impact on health, disease, and aging.
Download or read book Measuring Oxidants and Oxidative Stress in Biological Systems written by Lawrence J. Berliner and published by Springer Nature. This book was released on 2020-08-08 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the methods of analysis and determination of oxidants and oxidative stress in biological systems. Reviews and protocols on select methods of analysis of ROS, RNS, oxygen, redox status, and oxidative stress in biological systems are described in detail. It is an essential resource for both novices and experts in the field of oxidant and oxidative stress biology.
Download or read book Novel Therapeutic Approaches Targeting Oxidative Stress written by Pawan Kumar Maurya and published by Academic Press. This book was released on 2022-02-18 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: Novel Therapeutic Approaches Targeting Oxidative Stress investigates the role of oxidative stress in disease and explores the latest methods and approaches to targeting oxidative stress for treatment and diagnosis. The book begins with an introduction to oxidative stress and its significance. Subsequent sections cover biochemical methods for detecting free radicals and novel therapeutic approaches for targeting oxidative stress in a number of different diseases. This includes age-related illnesses, neuropsychiatric disorders such as schizophrenia and bipolar disorder, and neurodegenerative diseases like Alzheimer's and Parkinson's disease. Novel approaches for targeting oxidative stress in cancer and cardiovascular diseases are also explored. The book then moves on to discuss advances in drug delivery systems and detecting oxidative stress biomarkers using biosensors. It concludes with case studies that illustrate the targeting of oxidative stress and future perspectives. - Explores oxidative stress in a variety of diseases, including neurological disorders, cardiovascular diseases, age-related diseases, and cancer - Covers a range of therapeutic approaches to target oxidative stress - Includes chapters on the application of novel drug delivery systems and diagnostic biosensors to oxidative stress - Features case studies illustrating the targeting of oxidative stress
Download or read book Innovative Medicine written by Kazuwa Nakao and published by Springer. This book was released on 2015-10-13 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is devoted to innovative medicine, comprising the proceedings of the Uehara Memorial Foundation Symposium 2014. It remains extremely rare for the findings of basic research to be developed into clinical applications, and it takes a long time for the process to be achieved. The task of advancing the development of basic research into clinical reality lies with translational science, yet the field seems to struggle to find a way to move forward. To create innovative medical technology, many steps need to be taken: development and analysis of optimal animal models of human diseases, elucidation of genomic and epidemiological data, and establishment of “proof of concept”. There is also considerable demand for progress in drug research, new surgical procedures, and new clinical devices and equipment. While the original research target may be rare diseases, it is also important to apply those findings more broadly to common diseases. The book covers a wide range of topics and is organized into three complementary parts. The first part is basic research for innovative medicine, the second is translational research for innovative medicine, and the third is new technology for innovative medicine. This book helps to understand innovative medicine and to make progress in its realization.
Download or read book Free Radical Pathophysiology written by Silvia Alvarez and published by . This book was released on 2008-01-01 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: Free radicals are defined as any chemical species capable of independent existence, which contains at least one unpaired electron. Molecular divalent oxygen itself is by definition a free radical. The term reactive oxygen species (ROS) and reactive nitrogen species (RNS) are freely used in the literature. They refer to free radicals such as superoxide anion (O2"-), hydroxyl radical (HO") and nitric oxide (NO), and even to the non-radicals such as hydrogen peroxide (H2O2) and peroxynitrite (ONOO-). It has been shown that ROS and RNS are involved in a variety of physiological and pathological processes such as mutation, carcinogenesis, aging, atherosclerosis, inflammation, ischemia-reperfusion, and neurodegenerative diseases. Moreover, the importance of mitochondrial metabolism of these species in pathophysiological events, has been addressed. We believe that the readers of this book will find the real frontline areas of free radical research in pathophysiology. There is a bright future for investigations in this area, and we hope that this book will be helpful to every person interested in free radicals. This book has 24 chapters that are divided into 5 major sections that lead from basic concepts in free radical biology to clinically applied investigations. The book begins with an updated overview of basic principles on oxidative and nitrosative stress (Section 1). It takes us through the concept of oxidative stress and lipid peroxidation, 3-nitrotyrosine and nitrated lipids as markers of nitrosative stress, the effect of ferritin on ascorbyl radical content, and ends with the description of the antioxidant network and the relevance of flavanols and procyanidins for disease. Section 2 addresses the importance of mitochondria in pathophysiology. It is reviewed not only the role of mitochondria in cell death and the importance of the uncoupling proteins, but the nitric oxide metabolism and mitochondrial nitric oxide synthase from heart, as well. This section ends reviewing the relationship between mitochondrial oxidative stress and the permeability transition. The role of free radicals in inflammatory conditions is described in section 3. By starting with the discussion of the oxygen/nitric oxide metabolism in sepsis and the oxidative stress generated by the exposition to particulate matter, it ends with actualizations on the role of iron and the therapeutic role of melatonin in inflammation and sepsis. Section 4 focuses on the involvement of free radicals in neurodegeneration. The topics discussed includes: the importance of nitric oxide metabolism in neurodegenerative pathways, mitochondrial function in neuronal aging and plasticity, and the role of vitagenes in the cellular stress tolerance during aging and neurodegeneration. The last, but not least section (section 5) returns to the concept of oxidative stress and is discussed within the scope of different pathologies and related processes. This section begins with pathologies as alcoholic fatty liver disease associated with obesity and age related macular degeneration and glaucoma. It ends with the role and importance of oxygen free radicals in liver preconditioning, myocardial ischemia-reperfusion and in an experimental model of choline deficiency. Bringing together so many internationally recognized authors was not an easy task. We are grateful to them, who worked very hard to produce reviews of high scientific quality. This concerted effort makes the book an updated reference in the involvement of reactive oxygen and nitrogen species in physiological and pathological processes. We are also grateful to Dr. S. G. Pandalai from Transworld Research Network, without whose support this project would have never been completed.
Download or read book Stroke Vascular Diseases written by W.Wolfgang Fleischhacker and published by Springer Science & Business Media. This book was released on 2013-12-01 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atherosclerosis, the underlying cause of heart attacks, strokes and peripheral vascular disease, is one of the major killers in the world. By 2020 WHO statistics indicate that it will be the most common cause of morbidity and mortality in both the industrialised world and the underdeveloped world. The disease develops slowly over many years in the innermost layer of large and medium-sized arteries (Fig. 1) (Scott, 1995; Ross, 1999; Naumova and Scott, 2000; Glass and Witztum, 2001; Libby, 2001). It does not usually become manifest before the fourth of fifth decade, but then often strikes with devas tating suddenness. Fifty per cent of individuals still die (25 per cent immedi ately) from their first heart attack; and morbidity from coronary heart disease and stroke is very significant. The disease has a profound impact on health care services and on industrial economies. The lesions of atherosclerosis Autopsy studies show that in humans atherosclerosis begins in the first and second decade of life. A similar disease can be produced in experimental animals, where diet and genetics can be manipulated to produce identical lesions. The earliest lesions are fatty streaks. These consist of an accumulation of lipid-engorged macrophages (foam cells) and T and B lymphocytes in the arterial intima. With time, the fatty streaks progress to intermediate lesions, composed of foam cells and smooth muscle cells.
Download or read book Islets of Langerhans 2 Ed written by Shahidul Islam and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitric Oxide written by Louis J. Ignarro and published by Academic Press. This book was released on 2000-09-13 with total page 1023 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitric oxide (NO) is a gas that transmits signals in an organism. Signal transmission by a gas that is produced by one cell and which penetrates through membranes and regulates the function of another cell represents an entirely new principle for signaling in biological systems. NO is a signal molecule of key importance for the cardiovascular system acting as a regulator of blood pressure and as a gatekeeper of blood flow to different organs. NO also exerts a series of other functions, such as acting a signal molecule in the nervous system and as a weapon against infections. NO is present in most living creatures and made by many different types of cells. NO research has led to new treatments for treating heart as well as lung diseases, shock, and impotence. Scientists are currently testing whether NO can be used to stop the growth of cancerous tumors, since the gas can induce programmed cell death, apoptosis. This book is the first comprehensive text on nitric oxide to cover all aspects--basic biology, chemistry, pathobiology, effects on various disease states, and therapeutic implications. - Edited by Nobel Laureate Louis J. Ignarro, editor of the Academic Press journal, Nitric Oxide - Authored by world experts on nitric oxide - Includes an overview of basic principles of biology and chemical biology - Covers principles of pathobiology, including the nervous system, cardiovascular function, pulmonary function, and immune defense
Download or read book Free Radicals in Human Health and Disease written by Vibha Rani and published by Springer. This book was released on 2014-11-14 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Handbook on Immunosenescence written by Tamas Fulop and published by Springer Science & Business Media. This book was released on 2009-02-27 with total page 1693 pages. Available in PDF, EPUB and Kindle. Book excerpt: This authoritative handbook covers all aspects of immunosenescence, with contributions from experts in the research and clinical areas. It examines methods and models for studying immunosenescence; genetics; mechanisms including receptors and signal transduction; clinical relevance in disease states including infections, autoimmunity, cancer, metabolic syndrome, neurodegenerative diseases, frailty and osteoporosis; and much more.
Download or read book Gastritis and Gastric Cancer written by Paola Tonino and published by BoD – Books on Demand. This book was released on 2011-09-15 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive overview of invited contributions on Helicobacter pylori infection in gastritis and gastric carcinogenesis. The first part of the book covers topics related to the pathophysiology of gastric mucosal defense system and gastritis including the gastroprotective function of the mucus, the capsaicin-sensitive afferent nerves and the oxidative stress pathway involved in inflammation, apoptosis and autophagy in H. pylori related gastritis. The next chapters deal with molecular pathogenesis and treatment, which consider the role of neuroendocrine cells in gastric disease, DNA methylation in H. pylori infection, the role of antioxidants and phytotherapy in gastric disease. The final part presents the effects of cancer risk factors associated with H. pylori infection. These chapters discuss the serum pepsinogen test, K-ras mutations, cell kinetics, and H. pylori lipopolysaccharide, as well as the roles of several bacterial genes (cagA, cagT, vacA and dupA) as virulence factors in gastric cancer, and the gastrokine-1 protein in cancer progression.
Download or read book Homeostasis written by Fernanda Lasakosvitsch Castanho and published by BoD – Books on Demand. This book was released on 2019-01-30 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: The human body is composed of several systems and organs, consisting of millions of cells that need relatively stable conditions to function and contribute to the survival of the body as a whole. The maintenance of stable conditions for the cells against the variations of the external environment is an essential function of the body and is called homeostasis. As a consequence of the loss of homeostasis, a disease is manifested. This book aims to provide the reader with an up-to-date view of the self-regulatory mechanisms that are activated to achieve homeostasis, the pathways that are altered during the disease process, and how medicine can intervene to restore balance in critical patients.
