Related Experiment Videos
Post-translational modification of hemoglobin in alcoholism
Biochemical and Biophysical Research Communications
|June 29, 1983
Summary
Alcoholism may be diagnosed by detecting a unique hemoglobin fraction in blood. This abnormal hemoglobin, formed from ethanol metabolism, differs from normal glycosylated hemoglobin and can be identified through specific chromatographic properties.
Area of Science:
- Biochemistry
- Clinical Chemistry
- Toxicology
Background:
- Alcohol metabolism produces reactive aldehydes and ketones.
- Glycosylated hemoglobin (hemoglobin A1c) is a standard diabetes marker.
- Abnormal hemoglobin variants can indicate specific physiological conditions.
Purpose of the Study:
- To investigate a novel hemoglobin fraction found in alcoholics.
- To determine if this fraction can serve as a diagnostic marker for alcoholism.
- To elucidate the formation mechanism of the abnormal hemoglobin.
Main Methods:
- Chromatographic analysis of hemolysates from alcoholic individuals.
- Isolation and characterization of hemoglobin fractions.
- Incubation of human erythrocytes with acetaldehyde.
Main Results:
- A distinct hemoglobin fraction was identified in most alcoholics.
- This fraction shares properties with hemoglobin A1c but does not bind to boronated agarose.
- Similar fractions were observed in erythrocytes exposed to acetaldehyde, suggesting aldehyde adduct formation.
Conclusions:
- The abnormal hemoglobin fraction likely results from the addition of ethanol-derived aldehydes or ketones to hemoglobin A0.
- This acetaldehyde-hemoglobin adduct may serve as a potential biomarker for alcoholism diagnosis.
- Further research is warranted to validate its clinical utility.