The studies in this book demonstrated that increased oxidative stress in brain play a significant role in age-related cognitive impairment. Moreover, such increased oxidative stress leads to specific protein oxidation in the brain of cognitive impaired subject, thereby leading to cognitive function impairment. Moreover, the functional alterations of the proteins identified by proteomics in this book may leads to impaired metabolism, decline antioxidant system, and damaged synaptic communication. Ultimately, impairment of these processes lead to neuronal damages and cognitive ...