vincent Posted July 15, 2005 Share Posted July 15, 2005 Aging Cause Found in Mice, Could Help HumansThe buildup of mutated DNA triggers aging in mice, according to a new study that could help advance research into human aging. As a lifetime of small mutations in the genetic code build up, cells begin to die. These deaths lead to such things as graying hair and weight changes, hearing and vision impairment, loss of muscle and weakened bones. "We think that the key to what is happening in aging is that as (genetic) mutations or DNA damage accumulates, critical cells die," said Tomas Prolla of the University of Wisconsin-Madison. "These experiments favor a major role for programmed cell death in aging." This study, expected help scientists understand how humans grow old and die, is detailed in the July 15 issue of the journal Science. The DNA mutations accumulate specifically in each cell's mitochondria ? the energy plant for a cell. When these mitochondria shut off, so do the cells, leading to the signs of aging. Prolla and his group used mice that were genetically altered to lack the protein necessary to repair mitochondrial DNA. These mice accumulated mutations at a higher rate than seen in unaltered mice. "It's like a broken spellchecker," Prolla said. "By introducing a malfunction in the (genetic) proofreading domain, these mutations accumulate much more rapidly." These findings lend support to the theory that cell death is the cause of aging. The other theory, called oxidative stress, says that the aging process is the result of a lifetime of oxygen reacting with free radicals -- cell-damaging molecules that are produced naturally throughout the body. Prolla's team found no evidence indicating oxidative stress is the cause of aging. In fact, they discovered less oxidative stress than normal in tissues like the liver, suggesting that the damage to mitochondria was so severe that the mice's metabolism was lagging and producing fewer free radicals. This research suggests that someday anti-aging drugs could be developed that would prevent mutations from occurring in mitochondrial DNA ? either for the whole body, or just for specialized areas, like the ears or hair follicles. Of course, mice would again be important for the beginning stages of this type of research. "The idea would be to reduce the level of cell death and improve function," Prolla said. "If that pans out, then we can begin to think about pharmaceutical interventions to retard aging by preserving mitochondrial function." source Link to comment Share on other sites More sharing options...
spiegel Posted July 15, 2005 Share Posted July 15, 2005 The buildup of mutated DNA triggers aging in mice, according to a new study that could help advance research into human aging.As a lifetime of small mutations in the genetic code build up, cells begin to die. These deaths lead to such things as graying hair and weight changes, hearing and vision impairment, loss of muscle and weakened bones. "We think that the key to what is happening in aging is that as (genetic) mutations or DNA damage accumulates, critical cells die," said Tomas Prolla of the University of Wisconsin-Madison. "These experiments favor a major role for programmed cell death in aging." This study, expected help scientists understand how humans grow old and die, is detailed in the July 15 issue of the journal Science. The DNA mutations accumulate specifically in each cell's mitochondria ? the energy plant for a cell. When these mitochondria shut off, so do the cells, leading to the signs of aging. Source even though it is found in rats, the genetic makeup of a human is much more complicated, imo i dont think its gonna happen for now. Link to comment Share on other sites More sharing options...
Fred Derf Veteran Posted July 15, 2005 Veteran Share Posted July 15, 2005 [Threads Merged] I kept speigel's thread title though... Link to comment Share on other sites More sharing options...
spiegel Posted July 15, 2005 Share Posted July 15, 2005 yes i didnt see it, sorry :blush: Link to comment Share on other sites More sharing options...
Viserov Posted July 16, 2005 Share Posted July 16, 2005 Darn, and I learned from DS9 that cells die because of "cellular boredom." :p Link to comment Share on other sites More sharing options...
ev0| Posted July 18, 2005 Share Posted July 18, 2005 I want them to find the solution to this pronto so we can all not die (well at least the rich people in america anyway) and then we can charget the african countries a whole bunch of money if they want to be able to "not die" as well. Link to comment Share on other sites More sharing options...
bmbeeman Posted July 18, 2005 Share Posted July 18, 2005 But that's just the thing, people need to be able to die, population growth has already begun to go out of control. Link to comment Share on other sites More sharing options...
~WinGz~ Posted July 18, 2005 Share Posted July 18, 2005 ripgut you always find someone to teach me something new, lol nice find.. it will happen, just take a few years.. maybe 10-20-50 who knows but it will happen sooner or later. Link to comment Share on other sites More sharing options...
Argote Posted July 18, 2005 Share Posted July 18, 2005 nice news.. thou i remember hearing somehting very similar a few years back Link to comment Share on other sites More sharing options...
_kane81 Posted July 19, 2005 Share Posted July 19, 2005 There was different research theory showing that Folate will reduce ageing, Folate helps cell repair themselves. Sorce: Catalyst on ABC Australia. http://www.abc.net.au/catalyst/stories/s1381311.htm Link to comment Share on other sites More sharing options...
ev0| Posted July 21, 2005 Share Posted July 21, 2005 Sourceeven though it is found in rats, the genetic makeup of a human is much more complicated, imo i dont think its gonna happen for now. 586219359[/snapback] Untrue, rats have 98 percent the same DNA as humans. It's not as big a difference as you'd like to think. Link to comment Share on other sites More sharing options...
revvo Posted July 21, 2005 Share Posted July 21, 2005 I don't think any of us would want to live "forever" as much as we hate the outcome in the end. I say 200 years sounds good but no more... Link to comment Share on other sites More sharing options...
mr_demilord Posted July 25, 2005 Share Posted July 25, 2005 We shouldn't search for this, let the nature handle it, people get born people die like everything living creature, don't mess with the nature! like cloning animals :angry: Link to comment Share on other sites More sharing options...
Sensayshun Posted July 25, 2005 Share Posted July 25, 2005 I don't think any of us would want to live "forever" as much as we hate the outcome in the end.I say 200 years sounds good but no more... 586249960[/snapback] I've thought long and hard about this and decided that I wouldn't mind living forever. Sounds pretty useful if you ask me. Link to comment Share on other sites More sharing options...
NeoKing77 Posted July 25, 2005 Share Posted July 25, 2005 if immortality is ever to be achieved, it will be desired by a large number of people, and i don't think i need to point out the disadvantageous consequence that will follow... if you've ever travelled to a metropolitan asian city, you'll have a much better comprehension at what i'm getting at. Link to comment Share on other sites More sharing options...
Samoa Posted July 25, 2005 Share Posted July 25, 2005 I knew there would be break throughs in my life time. :D Link to comment Share on other sites More sharing options...
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