Decreased serum selenium in alcoholics as related to liver structure and function

Area of Science:

• Biochemistry
• Hepatology
• Nutritional Science

Background:

• Alcohol consumption is a leading cause of liver disease worldwide.
• Selenium is an essential trace element with antioxidant properties crucial for liver health.
• Previous studies suggest a link between selenium status and liver function, but specific data in alcoholics is limited.

Purpose of the Study:

• To investigate the relationship between serum selenium levels and liver histology in a cohort of alcohol-dependent individuals.
• To determine if serum selenium concentrations differ across various stages of alcoholic liver disease.
• To explore potential contributing factors to altered selenium levels in this population.

Main Methods:

• Serum selenium concentrations were measured in 46 patients with alcoholic liver disease.
• Patients were categorized into four groups based on liver biopsy: normal liver, fatty liver, alcoholic hepatitis, and cirrhosis.
• Serum selenium levels were compared between patient groups and with 25 healthy controls.

Main Results:

• Alcoholics exhibited significantly lower serum selenium levels (12-88 µg/l) compared to healthy controls (88.7 ± 11.0 µg/l).
• Serum selenium was reduced across all alcoholic liver disease stages, including normal liver (53.0 ± 20.7 µg/l), fatty liver (55.8 ± 21.2 µg/l), alcoholic hepatitis (46.0 ± 14.1 µg/l), and cirrhosis (41.1 ± 12.8 µg/l).
• The lowest serum selenium levels were observed in patients with decompensated alcoholic cirrhosis (29.2 ± 13.7 µg/l).

Conclusions:

• Alcoholic liver disease is associated with significantly diminished serum selenium levels.
• Serum selenium concentration appears to correlate inversely with the severity of liver damage in alcoholics.
• Inadequate dietary selenium intake and alcohol-induced hepatic dysfunction likely contribute to these findings.