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Risk factors of uveitis in ankylosing spondylitis: An observational study.

Abstract：

BACKGROUND:Uveitis is the most common extra-articular manifestation in patients with ankylosing spondylitis (AS). The prevalence and characteristics of uveitis in AS have been studied in previous literatures, whereas its associated risk factors have not been clarified. Therefore, this study analyzed the risk factors of uveitis in patients with AS. METHODS:A total of 390 patients with AS who fulfilled the modified New York criteria were enrolled from January to December in 2015. The history of uveitis was accepted only if diagnosed by ophthalmologists. The medical records of the patients were retrospectively reviewed and associated information was collected, such as disease duration, HLA-B27, and the number of peripheral arthritis. Hip-joint lesion was identified by imaging examination. Meanwhile, biochemical examinations were performed to determine the patient's physical function. RESULTS:Of 390 patients with AS (80.5% male, mean age 33.3 years), 38 (9.7%) had experienced 1 or more episodes of uveitis. The incidence rate for hip-joint lesion was obviously higher for patients with uveitis than the nonuveitis group (44.7% vs 22.2%; P < 0.01). The number of peripheral arthritis was also larger for the uveitis group than nonuveitis group (2.18 ± 0.23 vs 0.55 ± 0.04; P < 0.001). Meanwhile, patients with uveitis had a significantly higher level of antistreptolysin O (ASO) and circulating immune complex (CIC) than those without (P < 0.05 and P < 0.0001, respectively). However, there were no significant differences in disease duration, HLA-B27, erythrocyte sedimentation rate (ESR), and C-reactive protein (CRP) between the 2 groups. Binary logistic regression results showed that ASO (OR = 12.2, 95% CI:3.6-41.3, P < 0.01) and the number of peripheral arthritis (OR = 4.1, 95%CI:2.6-6.3, P < 0.01) are significantly associated with uveitis in AS. CONCLUSTION:This study provides some evidence that hip-joint lesion, the number of peripheral arthritis, ASO, and CIC may be associated with higher rates of uveitis in AS. The results of this comprehensive analysis suggest that the possible occurrence of uveitis in AS should not be neglected if the patients have those concomitant risk factors.

journal_name

Medicine (Baltimore)

journal_title

Medicine

authors

Sun L,Wu R,Xue Q,Wang F,Lu P

doi

10.1097/MD.0000000000004233

subject

Has Abstract

pub_date

2016-07-01 00:00:00

pages

e4233

issue

eissn

0025-7974

issn

1536-5964

pii

00005792-201607120-00052

journal_volume

pub_type

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Risk factors of uveitis in ankylosing spondylitis: An observational study.