Activation of Nrf2/ARE pathway alleviates the cognitive deficits in PS1V97L ‐Tg mouse model of Alzheimer’s disease through modulation of oxidative stress

In PS1V97L ‐Tg mice, oxidative stress became evident and the endogenous antioxidative pathway decreased. Activating the Nrf2/ARE pathway suppressed oxidative stress, decreased amyloid‐β, and improved the cognitive function. Lack of Nrf2 exacerbates the oxidative stress, induces Aβ accumulation, and facil itates the death of neurons. Our results highlight the role of the Nrf2/ARE pathway in regulating oxidative stress of the PS1V97L‐Tg mice and may indicate a potential therapeutic avenue for AD treatment. AbstractOxidative stress refers to an imbalance between oxidative and antioxidative systems due to environmental factors. Although oxidative stress is implicated in the pathogenesis of Alzheimer's disease (AD), its precise role is not yet understood. We aimed to investigate the pathogenic mechanisms of the oxidative stress by using in vitro cultured neurons and in vivo AD models of PS1V97L ‐transgenic (Tg) mice. Our results showed that when oxidative stress became increasingly evident, the endogenous protective pathway of nuclear factor E2‐related factor 2 (Nrf2)/antioxidant response element (ARE) decreased in 10‐month‐old PS1V97L‐Tg mice. Activating the Nrf2/ARE pathway sup pressed oxidative stress, decreased amyloid‐β (Aβ), and improved the cognitive function of the PS1V97L‐Tg mice. In contrast, blocking the Nrf2/ARE pathway augmented oxidative injury and decreased the cell viability of PS1V97L‐Tg neurons. Our results highlight the role of the Nrf2...

Source: Journal of Neuroscience Research - November 21, 2018 Category: Neuroscience Authors: Yuanruhua Tian, Wei Wang, Lingzhi Xu, Haitao Li, Yiping Wei, Qiaoqi Wu, Jianping Jia Tags: RESEARCH ARTICLE Source Type: research