نتایج جستجو برای: accelerate aging
تعداد نتایج: 131661 فیلتر نتایج به سال:
Depending on the nature of a given polymer and environment, rate degradation can vary significantly, from few hours up to tens decades. In aging community, it is therefore true challenge obtain an understanding loss in properties within reasonable time frame. The present work presents novel approach decrease that time. Within this study mechanical polyethylene terephthalate under hydrolysis pro...
Plant seeds lose their viability when they are exposed to long term storage or controlled deterioration treatments, by a process known as seed aging. Based on previous studies, artificially aging treatments have been developed to accelerate the process of seed aging in order to understand its underlying mechanisms. In this study, we used Brassica napus seeds to investigate the mechanisms of agi...
Studies of long-lived Caenorhabditis elegans mutants have identified several genes that function to limit lifespan, i.e., loss-of-function mutations in these genes promote longevity. By contrast, little is known about genes that normally act to delay aging and that when mutated cause premature aging (progeria). To seek such genes, we performed a genetic screen for C. elegans mutants that age pr...
This paper reviews the contemporary evidence that radiation can accelerate aging, degenerative health effects and mortality. Around the 1960s, the idea that ionizing radiation caused premature aging was dismissed as the radiation-induced health effects appeared to be virtually confined to neoplasms. More recently, radiation has become associated with a much wider spectrum of age-related disease...
Chronic obstructive pulmonary disease (COPD) progresses very slowly and the majority of patients are therefore elderly. COPD is characterized by an abnormal persistent inflammatory response to noxious environmental stimuli and there are increasing evidences for a close relationship between premature aging and chronic inflammatory diseases. Thus, COPD is considered to be a disease of an accelera...
Environmental contaminants can alter the course of neural development, with consequences that appear in behavior. Such effects extend into adulthood and sometimes accelerate the rate of aging, even when exposure ceases by birth. The neurotoxicant methylmercury provides an interesting case study that reveals much about how disrupted neural development has lifelong consequences. Methylmercury als...
Aging of the immune system is characterized by a progressive loss function, which limits vaccine effectiveness and responsible for increase in susceptibility to infections, cancer autoimmune diseases observed elderly population. Recent evidences suggest that intrinsic alterations accumulated T lymphocytes with age actively contribute state chronic inflammation underlies age-associated pathologi...
Cell divisions and mammalian aging: integrative biology insights from genes that regulate longevity.
Despite recent progress in the identification of genes that regulate longevity, aging remains a mysterious process. One influential hypothesis is the idea that the potential for cell division and replacement are important factors in aging. In this work, we review and discuss this perspective in the context of interventions in mammals that appear to accelerate or retard aging. Rather than focus ...
It is widely accepted that aging is characterized by a gradual decline in the efficiency and accuracy of biological processes, leading to deterioration of physiological functions and development of age-associated diseases. Age-dependent accumulation of genomic instability and development of metabolic syndrome are well-recognized components of the aging phenotype, both of which have been extensi...
The continuing increase in the prevalence of obesity and metabolic disorders such as type-II diabetes and an accelerating aging population globally will remain the major contributors to cardiovascular mortality and morbidity in the 21st century. It is well known that aging is highly associated with metabolic and cardiovascular diseases. Growing evidence also shows that obesity and metabolic dis...
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