Changed Profile of Serum Transferrin Isoforms in Primary Biliary Cholangitis

Area of Science:

• Biochemistry
• Hepatology
• Clinical Chemistry

Background:

• Liver damage in cholestatic diseases like primary biliary cholangitis (PBC) alters protein synthesis and posttranslational modifications, including glycosylation.
• Hydrophobic bile acid retention is a key factor in liver damage associated with PBC.

Purpose of the Study:

• To investigate the serum transferrin isoform profile in patients with primary biliary cholangitis (PBC).
• To compare the transferrin isoform profile in PBC with that observed in extrahepatic cholestasis.

Main Methods:

• Analysis of transferrin isoforms using capillary electrophoresis.
• Study involved 76 patients with PBC and 40 healthy blood donors.

Main Results:

• Significantly lower mean relative concentrations of disialotransferrin and trisialotransferrin were found in PBC patients compared to healthy subjects.
• No correlation was observed between transferrin isoform levels and histological disease severity (Ludwig scoring system).
• Disease stage correlated with alkaline phosphatase (ALP), gamma-glutamyl transferase (GGT) activity, and albumin levels.

Conclusions:

• The serum transferrin isoform profile is altered in primary biliary cholangitis (PBC) and differs from that in extrahepatic cholestasis.
• Decreased concentrations of lower sialylated transferrin isoforms in PBC are not linked to the histological stage of the disease.