Abstract
Pneumococcus plays a primary role as a causative agent of pneumonia both in the general population and in patients with immuno-inflammatory rheumatic diseases (IVRS), including spondylarthritis (SpA). However, data on the immunogenicity, efficacy and safety of pneumococcal vaccines in patients with SpA are limited.The aim of the study. To study the immunogenicity, efficacy and safety of the 23-valent pneumococcal polysaccharide vaccine (PPV-23) in patients with ankylosing spondylitis (AS) and psoriatic arthritis (PsA), observed at the V.A. Nasonova Research Institute (Moscow, Russia).Materials and methods. 145 people were included in the study: 51 patients with AS, 25 with PsA, 69 in control group (СG) without IVR. The majority of patients (65.8%) received immunosuppressive therapy. PPV-23 was administered in an amount of one dose (0.5 ml) subcutaneously against the background of antirheumatic therapy, regardless of the activity of the main IVR. The level of antibodies (AT) to pneumococcal capsular polysaccharide was determined using the EIA PCP IgG kit (TestLine Clinical Diagnostics, Czech Republic) before vaccination and 1, 3 and 12 months after it. The clinical efficacy and safety of PPV-23 were also evaluated, including the effect on the activity of AS and PsA according to the dynamics of BASDAI and DAPSA indices.Results. After 1, 3 and 12 months after vaccination, the concentration of pneumococcal AT was significantly higher compared to baseline values, which indicates sufficient immunogenicity of PPV-23. The clinical efficacy of PPV-23 in patients with AS and PsA was 98.7%. In general, there was no negative effect of vaccination on the activity of the underlying disease. The frequency of postvaccinal reactions in patients and in СG was comparable.Conclusions. The obtained results of the study indicate sufficient immunogenicity, clinical efficacy and safety of PPV-23 in patients with AS and Ps A.
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