oxygen and aging

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dadaliujia
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oxygen and aging

Post by dadaliujia » Mon Aug 20, 2007 1:45 am

reactive oxygen species are generated from mitochondrion because of the respiration chain not in a perfect state. the poisonous molecule can then damage macromolecules nearby, especially DNA existing in the mitochomdrion. All the destructions will result in aging.

can we avoid the killing inflicted by oxygen?

Darby
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Post by Darby » Mon Aug 20, 2007 1:59 am

That's what the many and varied antioxidant systems are fighting.

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MrMistery
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Post by MrMistery » Mon Aug 20, 2007 11:10 am

Shortly: NO. Although a healthy lifestyle that would make your body's antioxidant systems work better and consuming plenty of them in your diet, you would only be delaying the process.

Related to this: some people say that if you eat less you will live longer, since your body will produce less free radicals. While it is true that if you eat less you will live longer, i don't think anyone ever proved that the cause is less free radicals generated in mitochondria. Does anyone have info on the matter?
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter

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victor
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Post by victor » Thu Aug 23, 2007 1:44 am

Slowly but sure. Yes, that's what oxygen affects our aging process.
I imagine that it's like the 2nd law of thermodynamic regarding Andrew's post above :razz:
Q: Why are chemists great for solving problems?
A: They have all the solutions.

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