Arsenic-induced oxidative stress and its reversibility

Area of Science:

• Environmental Toxicology
• Molecular Biology
• Disease Mechanisms

Background:

• Arsenic exposure is a global health concern linked to numerous diseases.
• Arsenic disrupts cellular redox balance, inducing oxidative stress.
• The precise molecular mechanisms of arsenic toxicity are not fully understood.

Purpose of the Study:

• To review the molecular mechanisms of arsenic-induced oxidative stress.
• To identify biomarkers and disease associations.
• To explore preventive and therapeutic strategies against arsenic toxicity.

Main Methods:

• Literature review of studies on arsenic toxicity.
• Analysis of molecular pathways affected by arsenic.
• Evaluation of in vitro and in vivo models for therapeutic interventions.

Main Results:

• Arsenic alters growth factors, cell cycle, apoptosis, DNA repair, and methylation.
• It induces oxidative stress by generating reactive oxygen species and depleting glutathione.
• Arsenic acts as an epigenetic carcinogen, activating redox-sensitive pathways.
• Antioxidants like N-acetylcysteine and alpha-lipoic acid show prophylactic effects.

Conclusions:

• Arsenic toxicity involves complex molecular disruptions and oxidative stress.
• Understanding these mechanisms is crucial for developing effective treatments.
• Chelation therapy and antioxidant strategies offer potential therapeutic avenues.