Abstract：
:Psoriatic arthritis (PsA) patients have increased risk of both atherosclerosis and osteoporosis. Previous studies revealed that IL-33/ST2 axis may be related to both conditions; however, these associations were never evaluated in a single patients' group. Here we explored the association among plasma levels of IL-33 and its decoy receptor soluble ST2 (sST2), carotid plaque determined by ultrasound, and volumetric bone mineral density (vBMD)/microstructure of distal radius measured by high-resolution peripheral quantitative computed tomography (HR-pQCT) in 80 PsA patients (55% male; 53.0 ± 10.1 years). Plasma sST2 levels were significantly higher in 33 (41%) patients with carotid plaques (11.2 ± 4.5 vs 7.7 ± 3.7 ng/ml, P < 0.001). In multivariate analysis, sST2 was an independent explanatory variable associated with carotid plaques (OR = 1.296, 95% CI: [1.091,1.540]; P = 0.003). After adjustment for the osteoporotic risk factors, sST2 was significantly associated with higher cortical porosity (β = 0.184, [0.042,0.325]; P = 0.012) and cortical pore volume (2.247, [0.434,4.060]; P = 0.016); and had a trend to be associated with lower cortical vBMD (-2.918, [-6.111,0.275]; P = 0.073). IL-33 was not associated with carotid plaque or vBMD/microstructure. In conclusion, plasma sST2 levels were independently correlated with both carotid plaque and compromised cortical vBMD/microstructure in PsA patients. IL-33/ST2 axis may be a link between accelerated atherosclerosis and osteoporosis in PsA.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Shen J,Shang Q,Wong CK,Li EK,Kun EW,Cheng IT,Li M,Li TK,Zhu TY,Yu CM,Qin L,Tam LSdoi
10.1038/srep32116subject
Has Abstractpub_date
2016-08-24 00:00:00pages
32116issn
2045-2322pii
srep32116journal_volume
6pub_type
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