Polyphenols as Potential Metal Chelation Compounds Against Alzheimer's Disease

Area of Science:

• Neuroscience
• Biochemistry
• Pharmacology

Background:

• Alzheimer's disease (AD) is a prevalent neurodegenerative disorder affecting over 50 million people globally.
• AD pathology involves amyloid-beta (Aβ) aggregation and critical roles of metal ion dyshomeostasis (copper, zinc, iron).
• Imbalanced metal ions induce oxidative stress, cellular death, and cognitive decline, interacting with AβPP and Aβ42 to worsen aggregation and neurotoxicity.

Purpose of the Study:

• To review the potential of polyphenols as natural chelators in managing Alzheimer's disease.
• To discuss the chemical principles underlying polyphenol chelation therapy.
• To explore the multifaceted therapeutic effects of polyphenols in the context of AD.

Main Methods:

• Literature review focusing on metal dyshomeostasis in AD.
• Analysis of polyphenol chemical structures and their chelating properties.
• Examination of studies on polyphenol antioxidant, anti-amyloidogenic, and mitochondrial effects.

Main Results:

• Polyphenols exhibit natural chelating capabilities for transition metals implicated in AD.
• These compounds possess significant antioxidant and anti-amyloidogenic activities.
• Polyphenols also demonstrate beneficial effects on mitochondrial function.

Conclusions:

• Metal dyshomeostasis is a significant contributing factor to Alzheimer's disease progression.
• Polyphenols offer a promising therapeutic avenue due to their combined antioxidant, metal-chelating, and anti-amyloidogenic properties.
• Polyphenols are strong candidates for developing moderate chelation-based therapies for Alzheimer's disease.