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#1 2007-05-11 16:55:01

noosfractal
Member
From: Biosphere 1
Registered: 2005-10-04
Posts: 824
Website

Re: Agent protects cells from lethal effects of radiation

http://www.physorg.com/news97779197.html

...
The researchers developed the agent by attaching a portion of the Bcl-xL protein already known to block cell death - a snippet called BH4 - to the HIV protein TAT, which can deftly carry other molecules into cells. They gave the agent intravenously to mice exposed to 5 Grays of radiation. In humans, this level of exposure would cause a sharp drop in blood cells, leaving individuals with an increased risk of infection and bleeding.

They found the treatment helped protect rapidly dividing T cells and B cells in the spleen - immune system cells that are prone to radiation damage - whether it was given 30 minutes before radiation exposure or 30 minutes afterward.
...

[ great news for intense exposure, but I wonder if it effects the long term increased risk of cancer? ]


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