Oxidative stress in Alzheimer disease

Area of Science:

• Neuroscience
• Biochemistry
• Pathology

Background:

• Alzheimer disease (AD) is a progressive dementia linked to neuronal death, amyloid plaques, and neurofibrillary tangles.
• AD brains exhibit significant oxidative stress, including protein, lipid, DNA oxidation, and glycoxidation.
• Advanced glycation endproducts (AGEs) accumulate in AD amyloid plaques, potentially exacerbating oxidative stress and neuronal death.

Purpose of the Study:

• To explore the role of oxidative stress and advanced glycation endproducts (AGEs) in Alzheimer disease pathogenesis.
• To investigate therapeutic strategies targeting the cycle of oxidative stress and neurodegeneration in AD.

Main Methods:

• Review of histopathological and biochemical evidence in Alzheimer disease.
• Analysis of the mechanisms by which AGEs contribute to oxidative stress and neuronal death.
• Evaluation of potential therapeutic interventions.

Main Results:

• AGEs are implicated in neuronal death through direct and indirect free radical production.
• Accelerated oxidation of glycated proteins may lead to extracellular AGE accumulation in AD.
• Increased oxidative stress is a key feature of Alzheimer disease pathology.

Conclusions:

• Breaking the cycle of oxidative stress and neurodegeneration is a promising therapeutic avenue for AD.
• AGE-inhibitors, antioxidants, and anti-inflammatory agents represent potential treatments for Alzheimer disease.
• Targeting AGEs and oxidative stress may mitigate neuronal death and disease progression in AD.