Circadian Rhythms and Their Impact on Aging


Book Description

Biological rhythms time the ebb and flow of virtually every physiological process, and their mutual coordination guarantees the integrity of the organism over space and time. Aging leads to the disintegration of this coordination, as well as to changes in the amplitude and/or frequency of the underlying rhythms. The results of this are accelerated loss of health during aging, and in experimental model systems curtailed lifespan occurs. This book will examine the machinery that constitutes circadian systems and how they impact physiologic processes. It will also discuss how disturbances of circadian rhythms can lead to complex diseases associated with aging. Much of this treatment will focus on metabolism and genome stability. Importantly, the chapters in this book will encompass work in several different models, in addition to human. The book will conclude with a discussion of modeling approaches to biologic cycles and chronotherapy, for future research and translation.




Sleep and Clocks in Aging and Longevity


Book Description

This edited volume focuses on the interplay between sleep and circadian rhythms with health, aging and longevity. Sleep is absolutely important for human health and survival, as insufficient sleep is associated with a plethora of conditions, including the poor quality of life, onset of several diseases, and premature death. The sleep–wake cycle is an evolutionary conserved neurobiological phenomenon, and is a prominent manifestation of the biological clocks localised in the suprachiasmatic nucleus (SCN). Understanding bidirectional relationship between sleep and circadian rhythms is of utmost importance and urgency, especially in the context of modern lifestyle where sleep is often out of phase with the internal body clocks, social jetlag, artificial lights and so on. The 25 chapters by leading researchers and experts from 11 countries are arranged into seven sections: understanding sleep and clock interlink in health and longevity; sleep, aging and longevity; clock, aging and longevity; melatonin, sleep and clock; genetic regulation of sleep and clock; therapeutic interventions in sleep disorders and clock misalignment; and experimental models to study sleep and clocks in aging and longevity. This book is useful for advanced undergraduate and graduate students, and researchers, educators, and other biomedical professionals.




Circadian Clock and Aging


Book Description

This book aims to understand the inherent circadian cycles of biological processes and their role in maintaining health and healing a variety of diseases. The book is divided into eight sections. The first section introduces circadian rhythms and aging. The second section focuses on the detailed mechanistic approach of oscillatory pathways in mammals. The next section summarizes the sensitivity of the biological clock towards light and the circadian response to melatonin in mammals. The fourth section addresses the circadian architecture at the cellular level and introduces an age-dependent experimental model of rodents for subsequent biochemical and molecular investigations. The subsequent section covers the complexity of circadian regulation in mitochondrial dynamics and its impact on aging. The sixth section of the book discusses the findings obtained from different experimental approaches as a critical threat to the functioning of clock regulatory mechanisms and its associated health consequences during aging in humans and animal models. The circadian oscillatory mechanisms that are dysregulated and might play an important role in the development and progression of neurological disorders such as Alzheimer’s Disease (AD), Parkinson’s Disease (PD), Huntington’s Disease (HD), and Amyotrophic Lateral Sclerosis (ALS), etc are discussed in the next section. Towards the end, the book explores the circadian clock as a possible drug target to restore circadian oscillations.




Aging and Biological Rhythms


Book Description

Aging is one of the most serious and costly health problems in the Western world. A disproportionate amount of the available health care capability is devoted to the health care of the aged and the cost of this care is soaring. Viewed in wide perspective, aging presents two problems for the researcher's consideration. First is that of providing the most efficacious therapeutic regi mens and the best possible care for those already in their latter years. The second is to determine the cause or causes for senes cence and all its attendant problems in order to decrease the im pact of senescence on general health and well being. This volume is aimed at examining possible relationships be tween biological time structure and aging and ways by which these interrelationships might be examined in terms of both the causes of senescence and the management of health problems of the elderly. The purpose of the volume is to stir the interests of chronobiolo gists in gerontology and those of gerontologists and geriatricians in chronobiology.




Nutrition, Food and Diet in Ageing and Longevity


Book Description

This edited volume is a compilation of 30 articles discussing what constitutes food for health and longevity. The aim is to provide up-to-date information, insights, and future tendencies in the ongoing scientific research about nutritional components, food habits and dietary patterns in different cultures. The health-sustaining and health-promoting effects of food are certainly founded in its overall composition of macronutrients and micronutrients. However, the consumption of these nutrients is normally in the form of raw or prepared food from the animal and plant sources. The book is divided into four parts and a conclusion, and successfully convenes the well-established information and knowledge, along with the personal views of a diversified group of researchers and academicians on the multifaceted aspects of nutrition, food and diet. The first part reviews the scientific information about proteins, carbohydrates, fats and oils, micronutrients, pro- and pre-biotics, and hormetins, along with a discussion of the evolutionary principles and constraints about what is optimal food, if any. The second part discusses various kinds of foods and food supplements with respect to their claimed benefits for general health and prevention of some diseases. The third part brings in the cultural aspects, such as what are the principles of healthy eating according to the traditional Chinese and Indian systems, what is the importance of mealing times and daily rhythms, and how different cultures have developed different folk wisdoms for eating for health, longevity and immortality. In the part four, various approaches which are either already in practice or are still in the testing and research phases are discussed and evaluated critically, for example intermittent fasting and calorie restriction, food-based short peptides, senolytics, Ayurvedic compounds, optimal food for old people, and food for the prevention of obesity and other metabolic disorders. The overreaching aim of this book is to inform, inspire and encourage students, researchers, educators and medical health professionals thinking about food and food habits in a holistic context of our habits, cultures and patterns. Food cannot be reduced to a pill of nutritional components. Eating food is a complex human behavior culturally evolved over thousands of years. Perhaps the old adage “we are what we eat” needs to be modified to “we eat what we are”.




Principles and Practice of Geriatric Sleep Medicine


Book Description

This is a concise and comprehensive review of geriatric sleep medicine from a multidisciplinary viewpoint.




The Circadian Clock


Book Description

With the invitation to edit this volume, I wanted to take the opportunity to assemble reviews on different aspects of circadian clocks and rhythms. Although most c- tributions in this volume focus on mammalian circadian clocks, the historical int- duction and comparative clocks section illustrate the importance of various other organisms in deciphering the mechanisms and principles of circadian biology. Circadian rhythms have been studied for centuries, but only recently, a mole- lar understanding of this process has emerged. This has taken research on circadian clocks from mystic phenomenology to a mechanistic level; chains of molecular events can describe phenomena with remarkable accuracy. Nevertheless, current models of the functioning of circadian clocks are still rudimentary. This is not due to the faultiness of discovered mechanisms, but due to the lack of undiscovered processes involved in contributing to circadian rhythmicity. We know for example, that the general circadian mechanism is not regulated equally in all tissues of m- mals. Hence, a lot still needs to be discovered to get a full understanding of cir- dian rhythms at the systems level. In this respect, technology has advanced at high speed in the last years and provided us with data illustrating the sheer complexity of regulation of physiological processes in organisms. To handle this information, computer aided integration of the results is of utmost importance in order to d- cover novel concepts that ultimately need to be tested experimentally.




Human Circadian Physiology


Book Description




A Time for Metabolism and Hormones


Book Description

Recent years have seen spectacular advances in the field of circadian biology. These have attracted the interest of researchers in many fields, including endocrinology, neurosciences, cancer, and behavior. By integrating a circadian view within the fields of endocrinology and metabolism, researchers will be able to reveal many, yet-unsuspected aspects of how organisms cope with changes in the environment and subsequent control of homeostasis. This field is opening new avenues in our understanding of metabolism and endocrinology. A panel of the most distinguished investigators in the field gathered together to discuss the present state and the future of the field. The editors trust that this volume will be of use to those colleagues who will be picking up the challenge to unravel how the circadian clock can be targeted for the future development of specific pharmacological strategies toward a number of pathologies.




Circadian Medicine


Book Description

Circadian rhythms, the biological oscillations based around our 24-hour clock, have a profound effect on human physiology and healthy cellular function. Circadian Rhythms: Health and Disease is a wide-ranging foundational text that provides students and researchers with valuable information on the molecular and genetic underpinnings of circadian rhythms and looks at the impacts of disruption in our biological clocks in health and disease. Circadian Rhythms opens with chapters that lay the fundamental groundwork on circadian rhythm biology. Section II looks at the impact of circadian rhythms on major organ systems. Section III then turns its focus to the central nervous system. The book then closes with a look at the role of biological rhythms in aging and neurodegeneration. Written in an accessible and informative style, Circadian Rhythms: Health and Disease,will be an invaluable resource and entry point into this fascinating interdisciplinary field that brings together aspects of neuroscience, cell and molecular biology, and physiology.