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New Research on Cell Aging and Death

New Research on Cell Aging and Death
Author: Roman Strakos̆
Publisher:
Total Pages: 181
Release: 2018
Genre: Science
ISBN: 9781536136272

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New Research on Cell Aging and Death reviews previous literature to describe the main behavioral and biochemical characteristics of the SAMP8 mouse model, discussing its main advantages as well as potential weaknesses to model age-related diseases. The subsequent chapter discusses the effect of the mechanism of cell death of neutrophil granulocytes on the realization of the inflammatory process. Neutrophil granulocytes play a central role in the innate nonspecific defense response of the human organism. In addition, neutrophils infiltrate secondary lymphoid organs where they regulate the development of adaptive immunity. Later, the authors suggest that in C. albicans, apoptotic mechanisms are valuable as major strategies with several characteristics such as phosphatidylserine exposure, DNA fragmentation, and activation of metacaspase. Studying antifungal agents with varying mechanisms of action can be effective in appropriately treating potentially fatal candidiasis. In one study, the authors evaluated the effects of natural and chemical compounds on promoter activities of several human DNA repair-associated genes in HeLa S3 cells. . The results indicated that naturally occurring compounds, for example, trans-resveratrol, upregulate TP53 promoter activity. Sustaining an appropriate level of genes encoding DNA repair factors is thought to be necessary for cell survival by preventing the accumulation of DNA mismatches and epigenetic alterations. The concluding review focuses on the effects of aging on adult neurogenesis, a process of producing new neurons from neural stem cells and neural progenitor cells in the neocortex, comparing the dentate gyrus and subventricular zone.


Cellular Aging and Cell Death

Cellular Aging and Cell Death
Author: Nikki J. Holbrook
Publisher: John Wiley & Sons
Total Pages: 344
Release: 1995-12-20
Genre: Science
ISBN: 9780471121237

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Cellular AGING AND CELL DEATH Edited by Nikki J. Holbrook, George R. Martin, and Richard A.Lockshin Cellular Aging and Cell Death provides a thorough understanding ofthe mechanisms responsible for cellular aging, covering the recentresearch on programmed cell death and senescence, and describingtheir role in the control of cell proliferation and the agingprocess. This one-of-a-kind book is the first to combine the twohottest research areas of cell biology into one comprehensivetext. Leading experts contribute to give readers an authoritativeoverview of the distinct fields of cellular aging and programmedcell death, as well as to demonstrate how both fields are criticalto understanding the aging process. They address the large andgrowing interest in apoptosis, especially with regard to themolecular signals that induce and regulate programmed cell death,and the role of apoptosis in a variety of age-associated diseasesand disabilities. Throughout the book, a strong emphasis is placedon the interrelationship of the molecular, cellular, andphysiological aspects of senescence. Individual chapters discuss such topics as the role and regulationof apoptosis in development, the potential impact of cell death onsuch postmitotic tissues as nerve and muscle, and suggest thatprogrammed cell death plays an important role in both pathologicaland nonpathological aspects of aging, including neurodegenerativediseases. One important chapter focuses on the most recent research involvingthe study of telomeres, whose reduction in length with age and celldivision may underlie cellular senescence. The subject of neuronalcell death is also put into the perspective of aging. Cellular Aging and Cell Death bridges the rapidly growing fields ofcellular aging and programmed cell death. This thorough, yetconcise book will be of particular interest to graduate studentsand researchers within the fields of cell and developmentalbiology, neurobiology, immunology, and physiology. Physicians andmedical students involved in the fields of gerontology andpathology will also find this an informative reference.


New Research on Cell Aging

New Research on Cell Aging
Author: Reginald B. Garvey
Publisher: Nova Publishers
Total Pages: 202
Release: 2007
Genre: Medical
ISBN: 9781600214011

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This book presents research on cell growth and the ageing process. Emphasis is given to implications for cancer therapy, abnormal mitosis and aberrant nuclear morphology, neoplastic transformations, negative charges on various malignant cell types.


A Means to an End

A Means to an End
Author: William R. Clark
Publisher: Oxford University Press
Total Pages: 252
Release: 2002-02-28
Genre: Science
ISBN: 0195348397

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Why do we age? Is aging inevitable? Will advances in medical knowledge allow us to extend the human lifespan beyond its present limits? Because growing old has long been the one irreducible reality of human existence, these intriguing questions arise more often in the context of science fiction than science fact. But recent discoveries in the fields of cell biology and molecular genetics are seriously challenging the assumption that human lifespans are beyond our control. With such discoveries in mind, noted cell biologist William R. Clark clearly and skillfully describes how senescence begins at the level of individual cells and how cellular replication may be bound up with aging of the entire organism. He explores the evolutionary origin and function of aging, the cellular connections between aging and cancer, the parallels between cellular senescence and Alzheimer's disease, and the insights gained through studying human genetic disorders--such as Werner's syndrome--that mimic the symptoms of aging. Clark also explains how reduction in caloric intake may actually help increase lifespan, and how the destructive effects of oxidative elements in the body may be limited by the consumption of antioxidants found in fruits and vegetables. In a final chapter, Clark considers the social and economic aspects of living longer, the implications of gene therapy on senescence, and what we might learn about aging from experiments in cloning. This is a highly readable, provocative account of some of the most far-reaching and controversial questions we are likely to ask in the next century.


The Biology of Death

The Biology of Death
Author: André Klarsfeld
Publisher: Cornell University Press
Total Pages: 236
Release: 2004
Genre: Medical
ISBN: 9780801441189

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Why do we die? Do all living creatures share this fate? Is the body's slow degradation with the passage of time unavoidable, or can the secrets of longevity be unlocked? Over the past two decades, scientists studying the workings of genes and cells have uncovered some of the clues necessary to solve these mysteries. In this fascinating and accessible book, two neurobiologists share the often-surprising findings from that research, including the possibility that aging and natural death may not be forever a certainty for most living beings. André Klarsfeld and Frédéric Revah discuss in detail the latest scientific findings and views on death and longevity. They challenge many popular assumptions, such as the idea that the death of individual organisms serves to rejuvenate species or that death and sexual reproduction are necessarily linked. Finally, they describe current experimental approaches to postpone natural death in lower organisms as well as in mammals. Are all organisms that survive until late in life condemned to a "natural" death, as a consequence of aging, even if they live in a well-protected, supportive environment? The variability of the adult life span--from a few hours for some insects to more than a millennium for the sequoia and thirteen times that for certain wild berry bushes--challenges the notion that death is unavoidable. Evolutionary theory helps explain why and how some species have achieved biological mechanisms that seemingly allow them to resist time. Death cannot be understood without looking into cells--the essential building blocks of life. Intriguingly, at the level of cells, death is not always an accident; it is often programmed as an indispensable aspect of life, which benefits the organism as a whole.


Cell Ageing and Cell Death

Cell Ageing and Cell Death
Author: Ioan Davies
Publisher:
Total Pages: 362
Release: 1984
Genre: Science
ISBN: 9780521261722

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The phenomenon of cell aging and cell death are of considerable importance in many areas of biology. This joint symposium between the Society for Experimental Biology and the British Society for Research in Ageing considers the topic from an interdisciplinary point of view. The contents range from the initiation of cell senescence and the factors controlling the life span of cells, to the competing theories implicating programmed or accidental sequences of events in the process of cell deterioration. The fundamental nature of the subject will generate interest in the book across a wide range of biological and medical disciplines.


Epigenetics of Aging

Epigenetics of Aging
Author: Trygve O. Tollefsbol
Publisher: Springer Science & Business Media
Total Pages: 462
Release: 2009-11-11
Genre: Medical
ISBN: 1441906398

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Recent studies have indicated that epigenetic processes may play a major role in both cellular and organismal aging. These epigenetic processes include not only DNA methylation and histone modifications, but also extend to many other epigenetic mediators such as the polycomb group proteins, chromosomal position effects, and noncoding RNA. The topics of this book range from fundamental changes in DNA methylation in aging to the most recent research on intervention into epigenetic modifications to modulate the aging process. The major topics of epigenetics and aging covered in this book are: 1) DNA methylation and histone modifications in aging; 2) Other epigenetic processes and aging; 3) Impact of epigenetics on aging; 4) Epigenetics of age-related diseases; 5) Epigenetic interventions and aging: and 6) Future directions in epigenetic aging research. The most studied of epigenetic processes, DNA methylation, has been associated with cellular aging and aging of organisms for many years. It is now apparent that both global and gene-specific alterations occur not only in DNA methylation during aging, but also in several histone alterations. Many epigenetic alterations can have an impact on aging processes such as stem cell aging, control of telomerase, modifications of telomeres, and epigenetic drift can impact the aging process as evident in the recent studies of aging monozygotic twins. Numerous age-related diseases are affected by epigenetic mechanisms. For example, recent studies have shown that DNA methylation is altered in Alzheimer’s disease and autoimmunity. Other prevalent diseases that have been associated with age-related epigenetic changes include cancer and diabetes. Paternal age and epigenetic changes appear to have an effect on schizophrenia and epigenetic silencing has been associated with several of the progeroid syndromes of premature aging. Moreover, the impact of dietary or drug intervention into epigenetic processes as they affect normal aging or age-related diseases is becoming increasingly feasible.


Degeneration in Miniature

Degeneration in Miniature
Author: Lijing Jiang
Publisher:
Total Pages: 226
Release: 2013
Genre: Cell death
ISBN:

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Once perceived as an unimportant occurrence in living organisms, cell degeneration was reconfigured as an important biological phenomenon in development, aging, health, and diseases in the twentieth century. This dissertation tells a twentieth-century history of scientific investigations on cell degeneration, including cell death and aging. By describing four central developments in cell degeneration research with the four major chapters, I trace the emergence of the degenerating cell as a scientific object, describe the generations of a variety of concepts, interpretations and usages associated with cell death and aging, and analyze the transforming influences of the rising cell degeneration research. Particularly, the four chapters show how the changing scientific practices about cellular life in embryology, cell culture, aging research, and molecular biology of Caenorhabditis elegans shaped the interpretations about cell degeneration in the twentieth-century as life-shaping, limit-setting, complex, yet regulated. These events created and consolidated important concepts in life sciences such as programmed cell death, the Hayflick limit, apoptosis, and death genes. These cases also transformed the material and epistemic practices about the end of cellular life subsequently and led to the formations of new research communities. The four cases together show the ways cell degeneration became a shared subject between molecular cell biology, developmental biology, gerontology, oncology, and pathology of degenerative diseases. These practices and perspectives created a special kind of interconnectivity between different fields and led to a level of interdisciplinarity within cell degeneration research by the early 1990s.


Genes, Aging, and Immortality

Genes, Aging, and Immortality
Author: Charlotte Spencer
Publisher: Pearson
Total Pages: 68
Release: 2006
Genre: Health & Fitness
ISBN:

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This booklet answers questions about the mysteries of aging and the search for immortality. It describes some of the current progress in the scientific study of aging and explores social and ethical questions surrounding the real possibility of human lifespan extension.


Prolongevity

Prolongevity
Author: Albert Rosenfeld
Publisher: Knopf Books for Young Readers
Total Pages: 296
Release: 1976
Genre: Family & Relationships
ISBN:

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Descriptions of experiments, interviews with key researchers, and explanations of underlying theories comprise reportage on new discoveries and implications involving the probable slowing down and probable reversal of the aging process.