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Factors associated with bone erosion in patients with gout: A dual-energy gemstone spectral imaging computed
Xiaofei Liu1,2, Baige Li3,4,2, Xiaohuan Zhang3
1Department of Rheumatology and Immunology, Hainan Hospital, Chinese PLA General Hospital, Sanya, Hainan, China.
Objectives:
This study aimed to assess the factors influencing bone erosion (BE) in patients with gout using dual-energy gemstone spectral imaging computer tomography.
Methods:
We compared the clinical data, laboratory indices, and tissue urate levels at the monosodium urate (MSU) bone interface measured by dual-energy gemstone spectral imaging computed tomography of 87 gout patients with (n = 41) and without (n = 46) BE. Logistic regression analysis was used to investigate the risk factors associated with BE.
Results:
In total, 47.1% of patients with gout had BE. The disease duration, serum uric acid, tissue urate levels, and the presence of tophi were significantly higher (p < .05) in gout patients with BE than in those without BE. Longer disease duration (odds ratio = 1.11, 95% confidence interval: 1.00-1.24, p < .05) and increased tissue urate levels (odds ratio = 1.01, 95% confidence interval: 1.00-1.02, p < .05) were independently associated with BE. Tissue urate levels at the MSU-bone interface were correlated with the presence of tophi (r = 0.62, p < .001), BE (r = 0.51, p < .001), renal calculus (r = 0.24, p = .03), and serum uric acid levels (r = 0.23, p = .03).
Conclusions:
This study found that longer disease duration and elevated tissue urate concentrations at the MSU-bone interface were associated with BE in patients with gout.
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