Late-onset dietary restriction modulates protein carbonylation and catalase in cerebral hemispheres of aged mice
Date
2014-01-27
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Abstract
Oxidative stress is an important factor in causing aging and age-related diseases. It is caused by an imbalance between oxidants such as reactive oxygen species (ROS) and antioxidants. Protein oxidation elicited by free radicals may cause protein function disruptions. Protein carbonyl-ation, an irreversible process resulting in loss of function of the modified proteins, is a widely used marker for oxidative stress. In the present study, we have evaluated the levels of protein carbonyls, ROS, and catalase in the cerebral hemi-spheres of young and aged mice. When aged mice were
subjected to a dietary restriction (DR) regimen (alternate days feeding) of 3 months, a significant reduction in the
endogenous levels of protein carbonylation as well as ROS and elevation of catalase was observed in their cerebral hemispheres. The present study, thus, demonstrated the antioxidative effects of late-onset DR regimen in the cere-bral hemispheres of aged mice which may act as a powerful modulator of age-related neurodegenerative diseases
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Keywords
Aging, Protein, Carbonyls, Dietary restriction, Catalase, Reactive oxygen, Species, Cerebral hemispheres