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Table 2 Synovial fluid biomarkers associated with features of osteoarthritis (inflammation, radiographic, and symptom severity)

From: Synovial fluid biomarkers associated with osteoarthritis severity reflect macrophage and neutrophil related inflammation

 

Etarfolatide imaging

Radiographic severity

Symptom severity

Synovial inflammation

KL

JSN

OST

PAS

Biomarker

Est. ×10−2 (95% CI)

(pval)

Est. ×10−2 (95% CI)

(pval)

Est. ×10−2 (95% CI)

(pval)

Est. ×10−2 (95% CI)

(pval)

Est. ×10−2 (95% CI)

(pval)

sVCAM-1

0.970 (0.330–1.610)

(0.0029)

0.160 (0.094–0.220)

(< 0.0001)

0.130 (0.052–0.002)

(0.0009)

0.430 (0.170–0.680)

(0.0010)

0.320 (0.120–0.510)

(0.0015)

MMP-3

52.712 (34.933–70.492)

(< 0.0001)

9.591 (5.289–13.982)

(< 0.0001)

6.477 (2.962–9.994)

(0.0003)

17.695 (− 4.989–40.378)

(0.1263)

15.220 (7.567–22.872)

(< 0.0001)

sICAM-1

16.120 (3.020–29.220)

(0.0159)

2.520 (1.400–3.630) (< 0.0001)

2.270 (0.970–3.570)

(0.0006)

6.510 (3.250–9.780)

(< 0.0001)

5.980 (2.480–9.480)

(0.0008)

TIMP-1

1.470 (0.200–2.740)

(0.0228)

0.200 (0.110–0.300)

(< 0.0001)

0.140 (0.070–0.220)

(0.0002)

0.610 (0.430–0.800)

(< 0.0001)

0.790 (0.400–1.190)

(< 0.0001)

VEGF

0.076 (− 0.310–0.460)

(0.6985)

0.100 (0.047–0.140)

(0.0001)

0.070 (0.013–0.130)

(0.0160)

0.250 (0.120–0.370)

(0.0001)

0.210 (0.130–0.300)

(< 0.0001)

MCP-1

0.470 (− 0.670–1.610)

(0.4159)

0.044(− 0.130–0.220)

(0.6207)

0.036 (− 0.120–0.190)

(0.6529)

0.310 (− 0.210–0.820)

(0.2410)

0.420 (0.073 – 0.760)

(0.0175)

  1. Estimates (Est × 10−2) of regression coefficient (Beta estimate), 95% confidence intervals, and raw p values are listed in the table; those meeting FDR < 0.05 are italicized
  2. Abbreviations: KL Kellgren-Lawrence; JSN joint space narrowing; OST osteophyte; PAS pain, aching and stiffness of knee; pval p value; CI confidence interval; sVCAM-1 soluble vascular cell adhesion molecule 1; MMP-3 matrix metalloproteinase-3; sICAM-1 soluble intracellular adhesion molecule 1; TIMP-1 tissue inhibitor of metallopeptidase inhibitor 1; VEGF vascular endothelial growth factor; MCP-1 monocyte chemoattractant protein 1