Glycoconjugate Journal

, Volume 24, Issue 9, pp 543–550

Relative sialylation and fucosylation of synovial and plasma fibronectins in relation to the progression and activity of rheumatoid arthritis

  • Magdalena Przybysz
  • Dorota Maszczak
  • Krzysztof Borysewicz
  • Jacek Szechiński
  • Iwona Kątnik-Prastowska
Article

DOI: 10.1007/s10719-007-9049-9

Cite this article as:
Przybysz, M., Maszczak, D., Borysewicz, K. et al. Glycoconj J (2007) 24: 543. doi:10.1007/s10719-007-9049-9

Abstract

The expressions of terminal sugars in synovial and plasma fibronectins were studied in relation to rheumatoid arthritis (RA) progression defined according to the early, established and late radiological changes in the patients’ hands. The relative amounts of sialic acid and fucose were analyzed by lectin-ELISA using appropriate sialic acid-linked α2-3 (Maackia amurensis) and α2-6 (Sambucus nigra) lectins as well as fucose-linked α1-6 (Aleuria aurantia), α1-2 (Ulex europaeus), and α1-3 (Tetragonolobus purpureus). In the early RA group, the synovial fibronectin reactivities were the lowest with the all lectins used. In the established and late groups, relative sialylation and fucosylation significantly increased. However, sialylation negligibly decreased, whereas fucosylation remained at nearly the same level in the late group. Moreover, the expression of α1-6-linked fucose was found to be related to disease activity. In contrast, plasma fibronectin reactivity with lectins showed different dynamic alterations. In the early RA group, the reactivity of fibronectin with the lectins used was similar to that of healthy individuals, whereas it increased significantly in the established RA group compared with the early and normal plasma groups. In the late RA group it decreased to a level similar to that of the normal group. The lower expressions of terminal sugars in synovial fibronectin were mainly associated with the early degenerative processes of RA. In conclusion, such alterations may be applicable as a stage-specific marker for diagnosis and therapy of RA patients. The higher expression of terminal sugars in fibronectin could be associated with repair and adaptation processes in longstanding disease.

Keywords

FibronectinRheumatoid arthritisSialylationFucosylationSynovial fluid

Abbreviations

RA

rheumatoid arthritis

FN

fibronectin

MAA

lectin from Maackia amurensis

SNA

lectin from Sambucus nigra

AAA

lectin from Aleuria aurantia

LTA

lectin from Tetragonolobus purpureus

UEA

lectin from Ulex europaeus

Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Magdalena Przybysz
    • 1
  • Dorota Maszczak
    • 1
  • Krzysztof Borysewicz
    • 2
  • Jacek Szechiński
    • 2
  • Iwona Kątnik-Prastowska
    • 1
  1. 1.Department of Chemistry and ImmunochemistryWrocław Medical UniversityWrocławPoland
  2. 2.Department of RheumatologyWrocław Medical UniversityWrocławPoland