Changes in Energy Dynamics in Arsenic Exposure based Neurotoxicity: A Comprehensive Review

Area of Science:

• Environmental toxicology
• Neuroscience
• Molecular biology

Background:

• Groundwater contamination with arsenic (As3+), a toxic metalloid, occurs through natural processes and human activities.
• Arsenic exposure leads to various toxicities in humans and developing fetuses.
• Arsenic contamination poses a significant environmental and public health risk.

Purpose of the Study:

• To evaluate arsenic-induced neurotoxicity, focusing on oxidative stress, reactive oxygen species (ROS) generation, and mitochondrial dysfunction.
• To investigate caspase activation, apoptosis, and epigenetic modifications linked to arsenic exposure.
• To elucidate the molecular mechanisms underlying arsenic's detrimental effects on the nervous system.

Main Methods:

• A comprehensive literature review of published articles.
• Data synthesis and summarization from reputable scientific databases (PubMed, Scopus).

Main Results:

• Arsenic exposure induces oxidative stress and mitochondrial dysfunction, key contributors to neurotoxicity.
• AMP-activated protein kinase (AMPK) activation by arsenic can lead to energy depletion and neuronal cell death via autophagy.
• The exact mechanisms of arsenic-induced neurotoxicity during critical brain development stages require further investigation.

Conclusions:

• This review consolidates the understanding of molecular pathways in arsenic-induced neurotoxicity.
• Findings provide a foundation for developing effective ameliorative and therapeutic interventions.
• Further research is needed to fully understand and counteract arsenic's neurological effects.