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Coffeeshop Chit Chat - Old fart's secret to longevity</TD><TD id=msgunetc noWrap align=right> </TD></TR></TBODY></TABLE><TABLE class=msgtable cellSpacing=0 cellPadding=0 width="96%"><TBODY><TR><TD class=msg vAlign=top><TABLE border=0 cellSpacing=0 cellPadding=0 width="100%"><TBODY><TR class=msghead><TD class=msgbfr1 width="1%"> </TD><TD><TABLE border=0 cellSpacing=0 cellPadding=0><TBODY><TR class=msghead vAlign=top><TD class=msgF width="1%" noWrap align=right>From: </TD><TD class=msgFname width="68%" noWrap>MissClarity <NOBR></NOBR> </TD><TD class=msgDate width="30%" noWrap align=right>4:56 am </TD></TR><TR class=msghead><TD class=msgT height=20 width="1%" noWrap align=right>To: </TD><TD class=msgTname width="68%" noWrap>ALL <NOBR></NOBR></TD><TD class=msgNum noWrap align=right> (1 of 2) </TD></TR></TBODY></TABLE></TD></TR><TR><TD class=msgleft rowSpan=4 width="1%"> </TD><TD class=wintiny noWrap align=right>30300.1 </TD></TR><TR><TD height=8></TD></TR><TR><TD class=msgtxt>Isnt there a picture of old fart tucking into a very lavish sushi reunion dinner?
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The world's only immortal animal
By Bryan Nelson, Mother Nature Network
Posted Tue Mar 16, 2010 9:57am PDT
<CENTER>
(Photo: Peter Schuchert)
</CENTER>The turritopsis nutricula species of jellyfish may be the only animal in the world to have truly discovered the fountain of youth.
Since it is capable of cycling from a mature adult stage to an immature polyp stage and back again, there may be no natural limit to its life span. Scientists say the hydrozoan jellyfish is the only known animal that can repeatedly turn back the hands of time and revert to its polyp state (its first stage of life).
The key lies in a process called transdifferentiation, where one type of cell is transformed into another type of cell. Some animals can undergo limited transdifferentiation and regenerate organs, such as salamanders, which can regrow limbs. Turritopsi nutricula, on the other hand, can regenerate its entire body over and over again. Researchers are studying the jellyfish to discover how it is able to reverse its aging process.
Because they are able to bypass death, the number of individuals is spiking. They're now found in oceans around the globe rather than just in their native Caribbean waters. "We are looking at a worldwide silent invasion," says Dr. Maria Miglietta of the Smithsonian Tropical Marine Institute.
Bryan Nelson is a regular contributor to Mother Nature Network, where a version of this post originally appeared.
http://green.yahoo.com/blog/guest_bloggers/26/the-world-s-only-immortal-animal.html
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----------------------------------------------------------------------------------------------------------------------
The world's only immortal animal
By Bryan Nelson, Mother Nature Network
Posted Tue Mar 16, 2010 9:57am PDT
<CENTER>
(Photo: Peter Schuchert)
</CENTER>The turritopsis nutricula species of jellyfish may be the only animal in the world to have truly discovered the fountain of youth.
Since it is capable of cycling from a mature adult stage to an immature polyp stage and back again, there may be no natural limit to its life span. Scientists say the hydrozoan jellyfish is the only known animal that can repeatedly turn back the hands of time and revert to its polyp state (its first stage of life).
The key lies in a process called transdifferentiation, where one type of cell is transformed into another type of cell. Some animals can undergo limited transdifferentiation and regenerate organs, such as salamanders, which can regrow limbs. Turritopsi nutricula, on the other hand, can regenerate its entire body over and over again. Researchers are studying the jellyfish to discover how it is able to reverse its aging process.
Because they are able to bypass death, the number of individuals is spiking. They're now found in oceans around the globe rather than just in their native Caribbean waters. "We are looking at a worldwide silent invasion," says Dr. Maria Miglietta of the Smithsonian Tropical Marine Institute.
Bryan Nelson is a regular contributor to Mother Nature Network, where a version of this post originally appeared.
http://green.yahoo.com/blog/guest_bloggers/26/the-world-s-only-immortal-animal.html
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