Microheterogeneity with concanavalin A affinity of serum transferrin in patients with alcoholic liver disease.
Microheterogeneity of transferrin (Tf) with concanavalin A (ConA) affinity was investigated by sensitive lectin-affinity electrophoresis and antibody-affinity blotting technique of sera obtained from patients with alcoholic liver disease (ALD) and normal subjects. Serum Tf was separated by ConA into three bands-a strongly ConA-reactive major band (C1), a weakly reactive minor band (C2), and a non-reactive trace band (C3). The C3 fraction was significantly increased in patients with ALD before alcohol abstinence, compared with normal subjects and patients with ALD after 4 weeks of abstinence. Furthermore, a significant correlation was found between the C3 fraction and serum carbohydrate-deficient transferrin or gamma-glutamyl-transpeptidase. These results indicate that the microheterogeneity of serum Tf in patients with ALD may be a more complex abnormality of elongation and processing on the glycans than merely a loss of terminal sialic acids. Determination of the C3 fraction is a useful marker for ALD.
Inoue
T
T
Tikei University School of Medicine, Tokyo, Japan.
Yamauchi
M
M
Toda
G
G
Ohkawa
K
K
D000437:Alcoholism / Q000175:diagnosis* / Q000201:enzymology / Q000534:rehabilitation; D001797:Blood Protein Electrophoresis; D005500:Follow-Up Studies; D006801:Humans; D008104:Liver Cirrhosis, Alcoholic / Q000175:diagnosis* / Q000201:enzymology; D008111:Liver Function Tests; D011952:Receptors, Concanavalin A / Q000378:metabolism*; D014168:Transferrin / Q000031:analogs & derivatives* / Q000378:metabolism*; D005723:gamma-Glutamyltransferase / Q000097:blood
D011952:Receptors, Concanavalin A; D014168:Transferrin; C056759:carbohydrate-deficient transferrin; D005723:gamma-Glutamyltransferase