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Original

Pneumococcal vaccination of patients with systemic lupus erythematosus: Effects on generation of autoantibodies

, , , , , & show all
Pages 493-496 | Published online: 07 Jul 2009
 

Abstract

Objectives: To assess the effect of vaccination against streptococcus pneumoniae on the generation of autoantibodies in patients with SLE.

Materials and Methods: Twenty-four consecutive patients with SLE were vaccinated against streptococcus pneumoniae. Assessment was performed the day of vaccination and 2 months later and included evaluation of disease activity using the SLEDAI, serum levels of ESR, CRP, C3 and C4. The sera of the patients were tested by ELISA for anti-dsDNA, anticardiolipin (IgG and IgM), anti-Sm, anti-nRNP, anti-Ro/SSA, and anti-La/SSB.

Results: The mean age at enrollment into the study was 39, mean disease duration 6.9 years. The SLEDAI score (mean ± SD) was 4.41 ± 2.92 at the time of vaccination and 4.47 ± 3.11, 2 months apart. At the time of vaccination, 10 patients had anti-dsDNA, 2 patients had anti-Sm, 5 had anti-nRNP, and 9 had anti-Ro/SSA, 4 had anti-La/SSB, 4 had anticardiolipin IgG and IgM. Two months after vaccination, no change was observed in the proportion of patients with anti-Sm, anti-dsDNA, anti-RNP, anti-Ro/SSA and anticardiolipin IgM. A single patient developed anticardiolipin IgG and another one turned anti-RNP negative.

Conclusions: Vaccination against streptococcus pneumoniae did not trigger the generation of autoantibodies and confirms the clinical safety of this vaccine in SLE patients.

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