Re: Measuring the age of our cells

[Guest guest]

Hi All,

Are our bodies younger than we may think that they are? For the important

region,

the brain, it may apply.

See the press report and Medline citation for a paper that is pdf-available.

http://www.nytimes.com/2005/08/02/science/02cell.html?th= & emc=th & pagewanted=prin\

t

Spalding KL, Bhardwaj RD, Buchholz BA, Druid H, Frisen J. Related Articles,

Links

Retrospective birth dating of cells in humans.

Cell. 2005 Jul 15;122(1):133-43.

PMID: 16009139

--- mikesheldrick <mike@...> wrote:

>

> Exercise may not help stave off the inevitable but in many ways we

> are younger than we think.

>

> Mike

>

> http://tinyurl.com/av5z2

Al Pater, PhD; email: old542000@...

__________________________________________________

[Guest guest]

Hi All,

Are our bodies younger than we may think that they are? For the important

region,

the brain, it may apply.

See the press report and Medline citation for a paper that is pdf-available.

http://www.nytimes.com/2005/08/02/science/02cell.html?th= & emc=th & pagewanted=prin\

t

Spalding KL, Bhardwaj RD, Buchholz BA, Druid H, Frisen J. Related Articles,

Links

Retrospective birth dating of cells in humans.

Cell. 2005 Jul 15;122(1):133-43.

PMID: 16009139

--- mikesheldrick <mike@...> wrote:

>

> Exercise may not help stave off the inevitable but in many ways we

> are younger than we think.

>

> Mike

>

> http://tinyurl.com/av5z2

Al Pater, PhD; email: old542000@...

__________________________________________________

[Guest guest]

Hi folks:

Well I am not convinced that the argument that because cells in our

body are renewed fairly frequently that our bodies - or even our

cells - are younger than our chronological/biological ages.

The present cell may have been created only a couple of years ago,

but the length of its telomeres, which may be what is important,

reflects our real age, not, as I understand it, the time since the

cell was created, since the telomeres shorten each time a cell

divides.

By this logic brain cells which never renew/divide, would have the

LONGEST telomeres and therefore would be the youngest in this respect.

So I am not sure this research can justify the sentiments being

expressed about it.

Rodney.

>

> >

> > Exercise may not help stave off the inevitable but in many ways

we

> > are younger than we think.

> >

> > Mike

> >

> > http://tinyurl.com/av5z2

>

> Al Pater, PhD; email: old542000@y...

>

> __________________________________________________

>

[Guest guest]

Hi folks:

Well I am not convinced that the argument that because cells in our

body are renewed fairly frequently that our bodies - or even our

cells - are younger than our chronological/biological ages.

The present cell may have been created only a couple of years ago,

but the length of its telomeres, which may be what is important,

reflects our real age, not, as I understand it, the time since the

cell was created, since the telomeres shorten each time a cell

divides.

By this logic brain cells which never renew/divide, would have the

LONGEST telomeres and therefore would be the youngest in this respect.

So I am not sure this research can justify the sentiments being

expressed about it.

Rodney.

>

> >

> > Exercise may not help stave off the inevitable but in many ways

we

> > are younger than we think.

> >

> > Mike

> >

> > http://tinyurl.com/av5z2

>

> Al Pater, PhD; email: old542000@y...

>

> __________________________________________________

>

[Guest guest]

[ ] Re: Measuring the age of our cells Hi folks:Well I am not convinced that the argument that because cells in our body are renewed fairly frequently that our bodies - or even our cells - are younger than our chronological/biological ages.The present cell may have been created only a couple of years ago, but the length of its telomeres, which may be what is important, reflects our real age, not, as I understand it, the time since the cell was created, since the telomeres shorten each time a cell divides.By this logic brain cells which never renew/divide, would have the LONGEST telomeres and therefore would be the youngest in this respect.So I am not sure this research can justify the sentiments being expressed about it. --Well put, and good question.

Maco

[Guest guest]

[ ] Re: Measuring the age of our cells Hi folks:Well I am not convinced that the argument that because cells in our body are renewed fairly frequently that our bodies - or even our cells - are younger than our chronological/biological ages.The present cell may have been created only a couple of years ago, but the length of its telomeres, which may be what is important, reflects our real age, not, as I understand it, the time since the cell was created, since the telomeres shorten each time a cell divides.By this logic brain cells which never renew/divide, would have the LONGEST telomeres and therefore would be the youngest in this respect.So I am not sure this research can justify the sentiments being expressed about it. --Well put, and good question.

Maco