The author of a new scientific report makes a similar point to the passage cited in the post above:
QUOTE: Proteins widely believed to protect against aging can actually cause oxidative damage in mammalian brain cells, according to a new report in the July Cell Metabolism, a publication of Cell Press. The findings suggest that the proteins can have both proaging and protective functions, depending on the circumstances, the researchers said.
"Sirtuins are very important proteins," said Valter Longo of the University of Southern California, Los Angeles. "Overexpression can protect in some cases, and in other cases, it may do the opposite. It has to do with the fact that they do so many things..."
Source: http://www.sciencedaily.com/releases/2008/07/080701125905.htm
Again, the claim about a "great new discovery" you hear about on the evening news is usually not tempered by the likely qualification that if there is stress, you can't just inhibit or enhance a protein and expect the stressor to do no damage. Something else with "go wrong" instead. As you ancestors might have said, "a ounce of prevention is worth more than a pound of a cure." |
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