期刊
ANTIOXIDANTS
卷 10, 期 8, 页码 -出版社
MDPI
DOI: 10.3390/antiox10081231
关键词
proteinopathy; reactive oxygen species; Alzheimer's disease; amyloidopathy; tauopathy; oxidative stress
资金
- National Research Foundation of Korea [NRF-2020R1A2C2007954]
Proteinopathy and excessive production of reactive oxygen species are key factors contributing to neuronal toxicity in Alzheimer's disease. Beta-amyloid and tau proteins play a significant role in proteinopathy in AD, which is closely related to ROS production. The mechanisms of proteinopathy and ROS production work together to drive the pathology observed in aging brains, ultimately leading to oxidative stress and neurodegeneration.
Proteinopathy and excessive production of reactive oxygen species (ROS), which are the principal features observed in the Alzheimer's disease (AD) brain, contribute to neuronal toxicity. beta-amyloid and tau are the primary proteins responsible for the proteinopathy (amyloidopathy and tauopathy, respectively) in AD, which depends on ROS production; these aggregates can also generate ROS. These mechanisms work in concert and reinforce each other to drive the pathology observed in the aging brain, which primarily involves oxidative stress (OS). This, in turn, triggers neurodegeneration due to the subsequent loss of synapses and neurons. Understanding these interactions may thus aid in the identification of potential neuroprotective therapies that could be clinically useful. Here, we review the role of beta-amyloid and tau in the activation of ROS production. We then further discuss how free radicals can influence structural changes in key toxic intermediates and describe the putative mechanisms by which OS and oligomers cause neuronal death.
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