Senescence In Non-human Organisms
   HOME
*





Senescence In Non-human Organisms
Senescence () or biological aging is the gradual deterioration of functional characteristics in living organisms. The word ''senescence'' can refer to either cellular senescence or to senescence of the whole organism. Organismal senescence involves an increase in death rates and/or a decrease in fecundity with increasing age, at least in the latter part of an organism's life cycle. Senescence is the inevitable fate of almost all multicellular organisms with germ-soma separation, but it can be delayed. The discovery, in 1934, that calorie restriction can extend lifespan by 50% in rats, and the existence of species having negligible senescence and potentially immortal organisms such as '' Hydra'', have motivated research into delaying senescence and thus age-related diseases. Rare human mutations can cause accelerated aging diseases. Environmental factors may affect aging – for example, overexposure to ultraviolet radiation accelerates skin aging. Different parts of the body ...
[...More Info...]      
[...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]  


picture info

Ann Pouder
American supercentenarians are citizens or residents of the United States who have attained or surpassed 110 years of age. , the Gerontology Research Group (GRG) had validated the longevity claims of 782 American supercentenarians. As of , it lists the oldest living American-born person as Spanish emigrant María Branyas Morera (born in San Francisco, California on March 4, 1907), aged . The oldest American resident is listed as Edie Ceccarelli (born in Willits, California on February 5, 1908), aged . The longest-lived person ever from the United States is Sarah Knauss, of Hollywood, Luzerne County, Pennsylvania, who died on December 30, 1999, aged 119 years and 97 days. 100 oldest known Americans Below is a list of the 100 longest lived American supercentenarians according to the GRG and reliable sourcing. Biographies Ann Pouder Ann Pouder (née Ann Marie Alexander; April 8, 1807 – July 10, 1917) was one of the first modern recognized supercentenarians, living ...
[...More Info...]      
[...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]  



MORE