Ian A. York
iayork at panix.com
Sat Nov 20 22:11:43 EST 1999
In article <383780C0.C63DD8 at home.com>, Menoret <menoret at home.com> wrote:
>Well, I think you are probably right. For me necrosis without any trace
>of apoptosis has to be a violent phenomenon, like immediate tissue
>destruction. Most of the so-called necrosis observed in vivo looks like
>different kind of post apoptotic cell death. What is your definition of
>necrosis ? Are you talking of a cell or of a tissue ?
We're definitely talking about cells, as in cultured cells. The
definition of necrosis (if there is one) seems to be a negative one--cell
death that isn't apoptosis. Of course, apoptosis used to be defined as
cell death that isn't necrosis, but I think the concept of apoptosis is
more based on molecular events now.
I don't really know what necrosis is at the single-cell level. I think
of things like reactive oxygen species or anoxia, for most cells, leading
to a violent cell death, but one that takes several hours to occur--not as
simple as being torn from limb to limb. The lack of a good definition is
probably one of the problems we're facing in this question.
Ian York (iayork at panix.com) <http://www.panix.com/~iayork/>
"-but as he was a York, I am rather inclined to suppose him a
very respectable Man." -Jane Austen, The History of England
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