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Level of cellular stress determines longevity of retinal cells |
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Stress can be adaptive. |
It can make you sharper, help
you focus and it can even improve your performance. But too much of it can tax
cells to the point where they can no longer cope and slowly self-destruct.
Scientists at Rockefeller University now show that when the protein-making
factory of the cell is exposed to moderate stress, neurons in the fruit fly
retina and other cells not only resist death but also shore up their defenses
against damaging free radicals and ultraviolet radiation. |
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