Glycoconjugate Journal

, Volume 15, Issue 7, pp 723–729

Severe rheumatoid arthritis prohibits the pregnancy-induced decrease in α3-fucosylation of α1-acid glycoprotein

  • Ellen C Havenaar
  • John S Axford
  • Els C.M Brinkman-van der Linden
  • Azita Alavi
  • Esther C.R Van Ommen
  • Bert van het Hof
  • Timothy Spector
  • Andrzej Mackiewicz
  • Willem Van Dijk
Article

DOI: 10.1023/A:1006944700325

Cite this article as:
Havenaar, E.C., Axford, J.S., Brinkman-van der Linden, E.C. et al. Glycoconj J (1998) 15: 723. doi:10.1023/A:1006944700325

Abstract

Patients suffering from rheumatoid arthritis (RA) may experience a temporary reduction of disease symptoms during pregnancy. As indicated by the occurrence of RA-disease symptoms during pregnancy, three categories of patients were defined, namely, remission, relapse and unchanged. In all three categories changes in the plasma level and glycosylation of α1-acid glycoprotein (AGP) were determined longitudinally in comparison to those occurring in pregnancy of healthy women. In healthy pregnancy, we observed: (i) a peak in the plasma concentration at week 18 and a minimum at week 30; (ii) a continuous increase in the degree of branching of the glycans during the entire pregnancy period, and (iii) a decrease in the degree of α3-fucosylation of AGP-glycans with a minimum occurring at week 25. Comparable pregnancy-induced changes in glycosylation were found for two other acute-phase proteins α1-protease inhibitor (PI) and α1-antichymotrypsin (ACT). Increased oestrogen levels, known to occur during pregnancy, may be one of the factors that induce these changes, because the increased branching and decreased α3-fucosylation is in agreement with our earlier findings regarding an involvement of this hormone in the regulation of acute phase protein glycosylation in oestrogen-treated males as well as females. In all three clinical categories in RA, pregnancy also induced a continuous increase in the degree of branching of the glycans of AGP. However, similar changes in concentration and fucosylation were only found during remission of the disease symptoms. In the relapse and unchanged categories in RA, the degree of fucosylation and the plasma concentration of AGP remained constant throughout pregnancy. This indicates a relationship between changes in α3-fucosylation of AGP and RA disease activity.

rheumatoid arthritis Pregnancy α-acid glycoproteinα1-anitchymotrypsin α1-protease inhibitor fucosylation AAL, Aleuria aurantia lectin ACT, α1-antichymotrypsin AGP, α1-acid glycoprotein APP, acute-phase protein A0, Aw and As, APP glycoforms that are non-reactive,weakly reactive, respectively, strongly reactive withAAL CAIE, crossed affino immunoelectrophoresis Con A, concanavalin A C0, Cw and Cs, APP glycoforms that are non-reactive,weakly reactive, respectively, strongly reactive withConA HSPC, human serum protein calibrator PI, α1-protease inhibitor RA, rheumatoid arthritis 

Copyright information

© Chapman and Hall 1998

Authors and Affiliations

  • Ellen C Havenaar
    • 1
  • John S Axford
    • 2
  • Els C.M Brinkman-van der Linden
    • 1
  • Azita Alavi
    • 2
  • Esther C.R Van Ommen
    • 1
  • Bert van het Hof
    • 1
  • Timothy Spector
    • 3
  • Andrzej Mackiewicz
    • 4
  • Willem Van Dijk
    • 1
  1. 1.Department of Medical ChemistryVrije UniversiteitAmsterdamThe Netherlands
  2. 2.Academic Rheumatology Unit, Department Cellular and Molecular SciencesSt. George's Hospital Medical SchoolLondonUK
  3. 3.St. Thomas HospitalLondonUK
  4. 4.Department of Cancer Immunology, Academy of MedicineGreat Poland Cancer CenterPoznanPoland

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