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Studies find general mechanism of cellular aging

more cancers than old, normal mice," he said.

"Secondly, in all three studies, p16INK4a loss was associated with an improvement in some but not all of the consequences of aging. There are clearly things in addition to p16INK4a that contribute to aging. We don't yet know what they are."

However, the gene may prove immediately useful as a biomarker for studies of aging, Sharpless said. "If you were going to calorically restrict yourself or take green tea or resveratrol every day for years in an effort to prevent aging, wouldn't you like some evidence that these not entirely benign things were having a beneficial effect? Now we have a biomarker that can directly test the effects of such things," he said.


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Contact: L.H. Lang
llang@med.unc.edu
919-843-9687
University of North Carolina School of Medicine
6-Sep-2006


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