[Subclinical alcoholic optic neuritis without vitamin deficiency].

Area of Science:

• Neurology
• Toxicology
• Nutritional Science

Context:

• Alcoholism is a complex condition affecting multiple organ systems, including the nervous system.
• Optic neuritis, an inflammation of the optic nerve, can be a complication of chronic alcoholism.
• Sub-clinical visual abnormalities are common in alcoholics, but their underlying causes are not fully understood.

Purpose:

• To investigate the relationship between vitamin levels (B1, Folic Acid, B12), heavy metal exposure (Lead, Zinc), and optic neuritis in alcoholic patients.
• To explore correlations between optic neuritis and common alcoholism biomarkers.

Summary:

• This study analyzed vitamin B1, folic acid, vitamin B12, whole blood lead, and plasma zinc levels in 82 alcoholic patients undergoing rehabilitation.
• Thirty-two patients (39%) exhibited sub-clinical optic neuritis symptoms. No significant differences in vitamin levels were found between affected and unaffected groups.
• A negative correlation was observed between blood lead and plasma zinc levels, with higher lead and lower zinc associated with optic neuritis. Alcoholism biomarkers (gamma GT, VGM, TGO) were more abnormal in patients with optic neuritis.

Impact:

• Highlights a potential link between lead and zinc levels and optic nerve damage in alcoholism, independent of common vitamin deficiencies.
• Suggests that monitoring lead and zinc may be beneficial in assessing visual health in alcoholic populations.
• Underscores the importance of considering heavy metal toxicity and specific biomarkers in the management of alcoholic neuropathy.