Copper and Neurotoxicity in Autism Spectrum Disorder.

Area of Science:

• Biochemistry and Molecular Biology
• Neuroscience
• Oxidative Stress Research

Background:

• Free radicals (FR) are reactive oxygen and nitrogen species with unpaired electrons, crucial in biological redox reactions.
• Elevated FR levels, influenced by genetic and environmental factors, cause cellular damage, including lipid peroxidation and DNA damage.
• This oxidative stress is implicated in aging, Alzheimer's disease (AD), and autism spectrum disorder (ASD), creating a pro-inflammatory environment.

Purpose of the Study:

• To review the role of free radicals in biological systems and their contribution to diseases.
• To explore the involvement of metal ions, specifically copper, in oxidative damage.
• To discuss the potential antioxidant and therapeutic role of the amyloid precursor protein (APP) derivative, s-APP-alpha, in managing symptoms of autism spectrum disorder (ASD).

Main Methods:

• Literature review focusing on free radical biochemistry, oxidative stress mechanisms, and metal-ion interactions.
• Analysis of studies investigating the link between oxidative stress and neurodevelopmental disorders like ASD.
• Examination of research on the antioxidant properties of copper and s-APP-alpha.

Main Results:

• Free radicals, particularly when complexed with transition metals like copper, can oxidize biomolecules, leading to cellular injury.
• Oxidative damage and a pro-inflammatory state are significant factors in the pathogenesis of AD and ASD.
• The amyloid precursor protein (APP) derivative, s-APP-alpha, exhibits antioxidant properties.

Conclusions:

• Copper and other transition metals can exacerbate oxidative damage by interacting with free radicals.
• s-APP-alpha demonstrates potential as an antioxidant and may serve as an adjuvant therapy for certain symptoms associated with ASD.
• Understanding the interplay between free radicals, metals, and specific proteins like APP is crucial for developing novel therapeutic strategies for neurodevelopmental and neurodegenerative disorders.