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The Profile of Serum Transferrin Isoforms in Rheumatoid Arthritis.
Monika Gudowska1, Ewa Gruszewska1, Alicja Wrona1
1From the Departments of Biochemical Diagnostics.
Summary
Transferrin glycosylation is altered in rheumatoid arthritis (RA). Lower trisialotransferrin levels correlate with RA disease activity, suggesting its potential as a biochemical marker for RA.
Area of Science:
- Biochemistry
- Immunology
- Glycobiology
Background:
- Transferrin, an iron-transporting glycoprotein, exhibits microheterogeneity due to N-glycosylation.
- Glycosylation patterns of transferrin are altered in various diseases, including rheumatoid arthritis (RA).
- Analyzing transferrin isoforms offers insights into the glycosylation profile relevant to RA pathogenesis.
Purpose of the Study:
- To investigate the transferrin isoforms profile in patients diagnosed with rheumatoid arthritis.
- To determine the association between transferrin isoform levels and rheumatoid arthritis disease activity.
Main Methods:
- Serum samples were collected from 48 RA patients and 30 healthy controls.
- Transferrin isoforms were analyzed using capillary electrophoresis on the MINICAP system.
- Disease activity was assessed using the DAS 28 score, alongside platelet count and erythrocyte sedimentation rate (ESR).
Main Results:
- RA patients showed significantly decreased trisialo- and pentasialotransferrin, and increased tetrasialotransferrin compared to controls (p < 0.001).
- Disialotransferrin levels did not differ significantly between RA patients and controls.
- Lower trisialotransferrin concentrations correlated with higher RA disease activity (DAS 28), elevated platelet count, and high ESR (p < 0.001).
Conclusions:
- The serum transferrin isoform profile is significantly altered in patients with rheumatoid arthritis.
- Trisialylated transferrin isoforms show potential as a valuable biochemical marker for assessing RA disease activity.
- Further research may validate trisialotransferrin as a diagnostic or prognostic tool in RA management.
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