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National Institute of Environmental Health Sciences

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Your Environment. Your Health.

Publication Detail

Title: Extension of murine life span by overexpression of catalase targeted to mitochondria.

Authors: Schriner, Samuel E; Linford, Nancy J; Martin, George M; Treuting, Piper; Ogburn, Charles E; Emond, Mary; Coskun, Pinar E; Ladiges, Warren; Wolf, Norman; Van Remmen, Holly; Wallace, Douglas C; Rabinovitch, Peter S

Published In Science, (2005 Jun 24)

Abstract: To determine the role of reactive oxygen species in mammalian longevity, we generated transgenic mice that overexpress human catalase localized to the peroxisome, the nucleus, or mitochondria (MCAT). Median and maximum life spans were maximally increased (averages of 5 months and 5.5 months, respectively) in MCAT animals. Cardiac pathology and cataract development were delayed, oxidative damage was reduced, H2O2 production and H2O2-induced aconitase inactivation were attenuated, and the development of mitochondrial deletions was reduced. These results support the free radical theory of aging and reinforce the importance of mitochondria as a source of these radicals.

PubMed ID: 15879174 Exiting the NIEHS site

MeSH Terms: No MeSH terms associated with this publication

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