Plasma Selenium Levels in Chronic Cocaine Abuse.

Area of Science:

• Biochemistry
• Cardiovascular Medicine
• Toxicology

Background:

• Cocaine abuse is a global health issue with severe cardiovascular and cerebrovascular consequences.
• Selenium is a vital micronutrient essential for metabolic pathways and antioxidant defense.
• Oxidative stress plays a critical role in the pathogenesis of cocaine-induced organ damage.

Purpose of the Study:

• To investigate the relationship between selenium levels, oxidative stress, and vascular disease in chronic cocaine abusers.
• To assess how the duration of cocaine abuse influences oxidative stress markers and clinical outcomes.
• To explore the potential of selenium as a preventative or therapeutic agent.

Main Methods:

• 26 patients with chronic cocaine abuse were divided into two groups based on intake duration (≤1 year and >1 year).
• Vascular incidents (stroke, myocardial infarction, TIA) and hypertension were recorded.
• Laboratory analyses included complete blood count, inflammatory markers (CRP), liver and kidney function tests, electrolytes, lipid profiles, glucose, and plasma selenium concentrations.

Main Results:

• Vascular incidents were significantly higher in patients abusing cocaine for over one year (58.3%) compared to those abusing for up to one year (20%).
• Plasma selenium concentrations showed a positive correlation between the two cocaine abuse groups, indicating a decline with prolonged use.
• Elevated C-reactive protein (CRP) levels correlated with cocaine abuse duration, suggesting endothelial dysfunction and increased oxidative stress.

Conclusions:

• Oxidative stress intensifies with longer cocaine abuse duration, correlating with decreased plasma selenium levels.
• Lower selenium levels in chronic cocaine users are linked to increased risk of vascular complications.
• Early selenium supplementation during cocaine dependence may mitigate the risk of severe vascular accidents.