Carbohydrate-deficient transferrin during 3 weeks' heavy alcohol consumption

Area of Science:

• Biochemistry
• Clinical Chemistry
• Toxicology

Background:

• Alcohol consumption is a significant public health concern.
• Biomarkers are crucial for monitoring alcohol intake and its effects.
• Carbohydrate-deficient transferrin (CDT) is a potential biomarker for heavy alcohol use.

Purpose of the Study:

• To evaluate the effect of controlled heavy drinking on CDT levels.
• To compare the sensitivity of CDT with other liver enzymes (AST, gamma-glutamyltransferase) in detecting heavy alcohol consumption.

Main Methods:

• Ten healthy volunteers participated in a 3-week controlled drinking study.
• Participants consumed 60 g of ethanol daily.
• Carbohydrate-deficient transferrin (CDT) levels were measured using a commercial assay (CDTect).
• Levels of AST and gamma-glutamyltransferase were also monitored.

Main Results:

• A statistically significant increase in mean CDT levels was observed after 3 weeks of heavy drinking.
• CDT proved to be a more informative marker than AST and gamma-glutamyltransferase.
• Only 2 out of 10 volunteers showed CDT levels exceeding the manufacturer's upper normal limit (20 units/liter).
• The sensitivity of CDT in this study was lower than reported in previous research.

Conclusions:

• CDT levels rise with controlled heavy alcohol consumption.
• CDT demonstrates higher sensitivity than AST and gamma-glutamyltransferase for detecting heavy drinking.
• The clinical utility of CDT for identifying heavy drinkers across diverse alcohol consumption levels requires further investigation.
• The sensitivity of CDT may be overestimated in prior studies comparing extreme alcohol consumption groups.