Aging Of Organisms

Biological aging as the time-depending general decline of biological systems associated with a progressively increasing mortality risk is a general phenomenom of great significance. The underlying processes are very complex and depending on genetic and environment factors. These factors encode or affect a network of interconnected cellular pathways. In no system this network has been deciphered in greater detail. However, the strategy of studying various biological systems has let to the identification of pathways and specific modules and makes it obvious that aging is the result of different overlapping mechanisms and pathways. Some of these appear to be conserved ("public") among species, others are specific or "private" and only of significance in one or a few organisms. This volume in the series on "Biology of aging and its modulation" specifically focuses on organismic aging. The book covers research on organisms from lower to higher complexity representing examples from very diverse taxa like photosynthetic plants, fungi, sponges, nematodes, flies, birds and mammals. Such a broad treatise of this complex topic provides a comprehensive "flavor" about the current issues dealt with in this rapidly growing scientific discipline.

Time, Cells, and Aging, 2nd Edition presents the mechanics of cell function and the relevant implications of the molecular-genetic view to the aging phenomena. This book explores the biology of the aging process. Comprised of 11 chapters, this edition starts with an overview of the causes and mechanisms underlying the gradual deterioration of structure and function characteristics of aging. This text then examines the two aspects of the behavior of man, including the reasoned conscious behavior and the greater dependence on reaction patterns predicted on the successful responses of the past. Other chapters explore the relationship between aging and mortality rate in animals, which is a result of an organism's deceasing ability to function optimally in carrying out his vital functions. The final chapter deals with the implementation of a research plan relevant to understanding the primary mechanisms of the aging process. This book is a valuable resource for gerontologists, biologists, and molecular biologists.

The Biology of Senescence

The survival of the human species has improved significantly in modern times. During the last century, the mean survival of human populations in developed countries has increased more than during the preceding 5000 years. This improvement in survival was accompanied by an increase in the number of active years. In other words, the increase in mean life span was accompanied by an increase in health span. This is now accentuated by progress in medicine reducing the impact of physiologic events such as menopause and of patho logical processes such as atherosclerosis. Up to now,research on aging, whether theoretical or experimental, has not contributed to improvement in human survival. Actually, there is a striking contrast between these significant modifications in survival and the present knowledge of the mechanisms of human aging. Revealed by this state of affairs are the profound disagreements between gerontologists in regard to the way oflooking at the aging process. The definition of aging itself is difficult to begin with because of the variability of how it occurs in different organisms.

Stem Cells and Aging covers what is known about the effect of time and age on the basic units of life, which are the corresponding tissue-specific or adult stem cells. Even though the concept of stem cells was introduced nearly a century ago by Alexander Maximow, modern stem-cell research began in 1963 when James Till, Ernest McCullough and Lou Siminovitch established assays to detect hematopoietic stem cells. In fact, given the importance of the aging-associated diseases, scientists have developed a keen interest in understanding the aging process as they attempt to define the role of dysfunctional stem cells in the aging process. With an aging population worldwide, understanding these age-related stem cell changes at a basic biology level and at the level of their influences for regenerative medicine is of interest and importance. There is increasing evidence that the aging process can have much adverse effects on stem cells. In the modern era, one of the emerging fields in treating human diseases is stem cell research, as stem cells have the remarkable potential to treat a wide range of diseases. Nevertheless, understanding the molecular mechanism involved in aging and deterioration of stem cell function is crucial in developing effective new therapies for aging. Serves as an ideal reference to guide investigators toward valuable answers to the problems of our aging population Addresses the effect of time and age on human stem cells Includes chapters from contributors exploring the biology of stem cell aging around the globe

Handbook of the Biology of Aging, Eighth Edition, provides readers with an update on the rapid progress in the research of aging. It is a comprehensive synthesis and review of the latest and most important advances and themes in modern biogerontology, and focuses on the trend of ‘big data’ approaches in the biological sciences, presenting new strategies to analyze, interpret, and understand the enormous amounts of information being generated through DNA sequencing, transcriptomic, proteomic, and the metabolomics methodologies applied to aging related problems. The book includes discussions on longevity pathways and interventions that modulate aging, innovative new tools that facilitate systems-level approaches to aging research, the mTOR pathway and its importance in age-related phenotypes, new strategies to pharmacologically modulate the mTOR pathway to delay aging, the importance of sirtuins and the hypoxic response in aging, and how various pathways interact within the context of aging as a complex genetic trait, amongst others. Covers the key areas in biological gerontology research in one volume, with an 80% update from the previous edition Edited by Matt Kaeberlein and George Martin, highly respected voices and researchers within the biology of aging discipline Assists basic researchers in keeping abreast of research and clinical findings outside their subdiscipline Presents information that will help medical, behavioral, and social gerontologists in understanding what basic scientists and clinicians are discovering New chapters on genetics, evolutionary biology, bone aging, and epigenetic control Provides a close examination of the diverse research being conducted today in the study of the biology of aging, detailing recent breakthroughs and potential new directions

Examines past and current research on aging and longevity.

This report examines the relationships between aging and exposure to environmental agents (including natural and man-made agents, as well as life-style factors). Several relationships must be considered--the impact of intermittent or lifelong exposure to environmental agents on the rate of aging, the impact of lifelong exposure on health status when one reaches more advanced age, and the special response of the aged compared with that of the young when exposed to environmental agents.

Human Aging: From Cellular Mechanisms to Therapeutic Strategies offers an exhaustive picture of all the biological aspects of human aging by describing the key mechanisms associated with human aging and covering events that could disrupt the normal course of aging. Each chapter includes a summary of the salient points covered, along with futures prospects. The book provides readers with the information they need to gain or deepen the skills needed to evaluate the mechanisms of aging and age-related diseases and to monitor the effectiveness of therapies aimed at slowing aging. The book encourages PhD and Postdoc students, researchers, health professionals and others interested in the biology of aging to explore the fascinating and challenging questions about why and how we age as well as what can and cannot be done about it. Concentrates on different processes, e.g., oxidative stress, cellular senescence and Inflammaging Offers the ability to access cross-sectional knowledge more easily Written by expert researchers in biogerontology who are actively involved in various fields within aging research