X-Message-Number: 13106 From: Thomas Donaldson <> Subject: about sugars in cryonic suspension & cryobiology Date: Tue, 18 Jan 100 23:16:26 +1100 (EST) Hi everyone! Some messages for this Cryonet dont really seem to me worth the reply, but the issue of sugars as cryoprotectants does deserve discussion. First of all, no sugar so far known has helped with suspension down to temperatures close to or below that of liquid nitrogen. I WAS interested though to find that the research supported by the Life Extension Foundation in means to suspend organs DID use sugar-based cryoprotectants in the early stages of organ suspension. (Just because they wont take you down to LN does not imply that their use is worthless). I have no idea what use of sugars would do to someone who was diabetic. The idea of using them, and their general use, is to protect the OUTSIDE of cells down to temperatures as low as (say) about -45 C. There use isnt to get involved with cell metabolism (which will have effectively ceased at such temperatures) but to use the their antifreeze character. Best and long long life to all, Thomas Donaldson Rate This Message: http://www.cryonet.org/cgi-bin/rate.cgi?msg=13106