Mechanisms of Interspecies Senescence Senescence The nature of human experience has impelled us throughout time to ponder mortality and immortality. Today, biologists are actually beginning to provide answers to what were formally purely philosophical and religious questions. What follows is a discussion of the mechanisms underlying biological mortality and immortality, otherwise known as senescence. In terms of biological immortality, the cnidarian Hydra stands out. Some hydra species have been shown to survive indefinitely

Aging Workforce: The issue of an aging workforce is one of the major growing challenges that organizations and industry experts face. This issue not only presents an actual safety challenge but also a huge opportunity to address other socio-economic forces. For employers seeking to maintain a top-notch workforce, the issue of aging workforce is not only a challenge but an opportunity for employees who may want to earn extra income

S." (Liu, 2008) the actual solution to the challenges facing the health care system in the United States is one that makes a requirement of three components: implementing tort reforms; mandating the use of best practices; and driving systemic process improvement. (Liu, 2008) This report states that the threat of litigation gets in the way of health care delivery in that is "causes providers to hide problems and engage in unnecessary procedures

This then leads to the activation of a number of genes whose products trigger cell-cycle arrest, apoptosis, or DNA repair" (Lakin 1999, p. 7644). In research led by Hussain, he investigated the targets of free radicals, which are DNA, proteins, RNA, and lipids. He noted that, "mutations in cancer-related genes or post-translational modifications of proteins by nitration, nitrosation, phosphorylation, acetylation or polyADP-ribosylation-by free radiacals or lipid peroxidation byproducts…are some of

Physiological Changes Associated With Aging Aging is the complex and inevitable process of tissue and organ system degeneration. Though largely influenced by genetics, aging is also dependent upon a number of environmental factors including exercise, diet, childhood personality, and exposure to ionizing radiation, pollutants, or microorganisms. The physiological changes that occur as an individual's age advances can be grouped into three, with the first category encompassing changes in such homeostatic mechanisms

Cellular Function and Aging Tumor Suppression Protein 53 and Effects on Cellular Function and Aging The concept of aging has many intrinsic and extrinsic factors that act as markers on an individual organism. Ignoring mortality associated with external environmental factors, very few organisms can be said to have cellular immortality with no decrease in cellular function or repeat division in normal diploid cells. Cellular senescence is a normal process that halts