Gaydukova IZ, Rebrov AP, Aparkina AV, Khondkaryan EV. [Stable high interleukin-17A concentration in patients with ankylosing spondylitis treated with tumor necrosis factor-α inhibitors during a year].
TERAPEVT ARKH 2017;
89:80-85. [PMID:
28514405 DOI:
10.17116/terarkh201789480-85]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
AIM
To assess changes in the concentration of interleukin-17A (IL-17A) in patients with ankylosing spondylitis (AS) treated with tumor necrosis factor-α (TNFα) inhibitors during a year.
SUBJECTS AND METHODS
Examinations were made in 30 patients (22 (73.3%) men) aged 38.35±9.19 years with AS (modified New-York criteria, BASDAI ≥4.0; AS duration, 11.4±9.6 years) and in 20 healthy individuals (12 (60%) men) aged 40.1±7.7 years) (a control group). All the patients were treated with infliximab (remicade, MSD) 5 mg/kg body weight during a year according to the recommended regimen. BASDAI and ASDAS were calculated; C-reactive protein (CRP), erythrocyte sedimentation rate (ESR), and TNFα and IL-17A concentrations were measured before and 52±2 weeks after TNFα inhibitors treatment. BASDAI/ASDAS improvement, ESR and CRP decreases; ASAS20/40 responses, ASAS partial remission, and an ASDAS improvement were estimated.
RESULTS
In the patients with AS, the concentrations of TNFα and IL-17A were higher than those in the healthy individuals (p < 0.000). Twelve (40%) AS patients treated with TNFα inhibitors achieved ASAS partial remission. The average estimated back pain, ASDAS and BASDAI scores, and CRP and ESR substantially reduced (p<0.000 for all). The concentration of TNFα decreased from 17.8±7.6 to 7.3±3.2 pg/ml (p<0.000). The IL-17A level was 28.4±14.4 and 32.1±12.2 pg/ml before and after the treatment, respectively. The baseline level of IL-17A was lower in the patients with AS who had achieved remission than that in those who had not (p=0.01).
CONCLUSION
The improvement due to one-year AS treatment with TNFα inhibitors is not associated with the reduction of IL-17A concentrations. In the patients who failed to achieve ASAS partial remission, the baseline and final serum concentrations of IL-17A were higher than in those who achieved the remission.
Collapse