S
Seal-Clubber
I have been reading recent studies involving these microscopic things called chromosomes, more specifically, a region of repetitive nucleotide sequences called Telomeres.
Basically, there are about a few hundred thousand of these repeating DNA sequences at the ends of every repeating DNA chain. This repetition is responsible for life and death of a repeating DNA chain. Every time a chromosome reproduces, it`s telomeres are reduced by a few hundred. Over the period of about 80-100 years, our telomeres are so short, they can no longer help a cell divide without complete nucleotide decomposition.
New studies are being produces which show the infusion of certain chemicals found in meat, the natural shortening of chromosomal telomere length is significantly reduced. Some reports are showing the detoxification of telomere apoptosis can be reduced but this leads to the possible effect of nucleic mutation (cancer). It will be corrected in the next 50 years.
Anyone have any thoughts? Do most of you understand that cancer is immortal? As long as it gets energy, it can live forever. Programming a cell to think it`s immortal, like cancer, is going to be possible.
BUT You might find this MORE interesting..
http://www.ncbi.nlm.nih.gov/pubmed/15474517
Basically, there are about a few hundred thousand of these repeating DNA sequences at the ends of every repeating DNA chain. This repetition is responsible for life and death of a repeating DNA chain. Every time a chromosome reproduces, it`s telomeres are reduced by a few hundred. Over the period of about 80-100 years, our telomeres are so short, they can no longer help a cell divide without complete nucleotide decomposition.
New studies are being produces which show the infusion of certain chemicals found in meat, the natural shortening of chromosomal telomere length is significantly reduced. Some reports are showing the detoxification of telomere apoptosis can be reduced but this leads to the possible effect of nucleic mutation (cancer). It will be corrected in the next 50 years.
Anyone have any thoughts? Do most of you understand that cancer is immortal? As long as it gets energy, it can live forever. Programming a cell to think it`s immortal, like cancer, is going to be possible.
In the early 1970s, Russian theorist Alexei Olovnikov first recognized that chromosomes could not completely replicate their ends. Building on this, and to accommodate Leonard Hayflick's idea of limited somatic cell division, Olovnikov suggested that DNA sequences are lost every time a cell/DNA replicates until the loss reaches a critical level, at which point cell division ends.[3][4]
In 1975–1977, Elizabeth Blackburn, working as a postdoctoral fellow at Yale University with Joseph Gall, discovered the unusual nature of telomeres, with their simple repeated DNA sequences composing chromosome ends. Their work was published in 1978. The telomere-shortening mechanism normally limits cells to a fixed number of divisions, and animal studies suggest that this is responsible for aging on the cellular level and sets a limit on lifespans. Telomeres protect a cell's chromosomes from fusing with each other or rearranging—abnormalities that can lead to cancer—and so cells are destroyed when their telomeres are consumed. Most cancers are the result of "immortal" cells that have ways of evading this programmed destruction.[5]
Elizabeth Blackburn, Carol Greider, and Jack Szostak were awarded the 2009 Nobel Prize in Physiology or Medicine for the discovery of how chromosomes are protected by telomeres and the enzyme telomerase.[6]
BUT You might find this MORE interesting..
http://www.ncbi.nlm.nih.gov/pubmed/15474517
Abstract
Telomere is the repetitive DNA sequence at the end of chromosomes, which shortens progressively with cell division and limits the replicative potential of normal human somatic cells. L-carnosine, a naturally occurring dipeptide, has been reported to delay the replicative senescence, and extend the lifespan of cultured human diploid fibroblasts. In this work, we studied the effect of carnosine on the telomeric DNA of cultured human fetal lung fibroblast cells. Cells continuously grown in 20 mM carnosine exhibited a slower telomere shortening rate and extended lifespan in population doublings. When kept in a long-term nonproliferating state, they accumulated much less damages in the telomeric DNA when cultured in the presence of carnosine. We suggest that the reduction in telomere shortening rate and damages in telomeric DNA made an important contribution to the life-extension effect of carnosine.