Konstantinos Triantafyllias, Stefanie Liverakos, Xenofon Baraliakos, Andreas Schwarting
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引用次数: 0
Abstract
Objectives: To assess the value of optical spectral transmission (OST) in detecting joint inflammation in patients with psoriatic arthritis (PsA) and to evaluate correlations of OST with musculoskeletal ultrasound (US) and clinical disease activity markers.
Methods: OST and clinical examinations were performed on the finger (metacarpophalangeal, proximal-interphalangeal, distal-interphalangeal) and wrist joints of patients with PsA and healthy controls. A subset of patients was additionally examined via musculoskeletal US. OST differences in the two groups were statistically assessed and the diagnostic performance of OST was evaluated by Receiver-Operating-Characteristics (ROC). Additionally, associations between OST values and clinical, laboratory, as well as US activity markers were examined through correlation analyses and linear regression.
Results: A total of 3,000 joints from 100 PsA patients were examined using OST and compared to 3,000 joints from 100 controls. OST was significantly higher in the PsA group compared to the control group (15.76 vs. 10.24; p<0.001). ROC (PsA vs. controls) revealed a very good diagnostic OST performance by an area-under-the-curve of 0.848 (95%-CI 0.795-0.900; p<0.001), with a sensitivity of 0.89 and specificity of 0.71 for an OST cut-off of 12.75. Among patients, OST correlated moderately with Joint-Power-Doppler- (rho=0.412; p=0.015) and Grey-Scale-US (rho=0.419; p=0.014), respectively. Moreover, significant OST correlations with CRP (rho=0.232; p=0.021), ''Disease-Activity-in-Psoriatic-Arthritis (DAPSA)'' (rho=0.215; p=0.032) and "Disease-Activity-Score-28 (DAS28)" (rho=0.23; p=0.021) were found.
Conclusion: OST associated significantly with clinical, US and laboratory disease activity markers in patients with PsA. Furthermore, OST could reliably differentiate between sonographically inflamed and non-inflamed joints in patients with PsA.
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Rheumatology strives to support research and discovery by publishing the highest quality original scientific papers with a focus on basic, clinical and translational research. The journal’s subject areas cover a wide range of paediatric and adult rheumatological conditions from an international perspective. It is an official journal of the British Society for Rheumatology, published by Oxford University Press.
Rheumatology publishes original articles, reviews, editorials, guidelines, concise reports, meta-analyses, original case reports, clinical vignettes, letters and matters arising from published material. The journal takes pride in serving the global rheumatology community, with a focus on high societal impact in the form of podcasts, videos and extended social media presence, and utilizing metrics such as Altmetric. Keep up to date by following the journal on Twitter @RheumJnl.
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