Table 2.
Metabolite levels in the serum of patients with ERA and controls.
| Metabolites (Relative Units) | Control (n=19) | Early RA (n=32) | p-value |
|---|---|---|---|
| Median (IRQ) | Median (IQR) | ||
| Lactic Acid | 25.90 (24.16, 28.24) | 28.46 (24.04, 31.44) | 0.07 |
| Glycolic Acid | 0.09 (0.08, 0.11) | 0.08 (0.07, 0.10) | 0.028 |
| Alanine | 20.64 (18.70, 21.22) | 18.71 (17.05, 20.83) | 0.073 |
| 2-Hydroxybutyric Acid | 2.45 (1.59, 2.94) | 3.27 (2.30, 4.77) | 0.008 |
| Sarcosine | 0.06 (0.05, 0.06) | 0.05 (0.05, 0.05) | 0.017 |
| 3-Hydroxybutyric Acid/3-Hydroxyisobutyric Acid | 0.98 (0.57, 1.52) | 1.44 (1.02, 3.64) | 0.034 |
| 2-Hydroxyisovaleric Acid | 0.70 (0.50, 1.04) | 0.85 (0.72, 1.25) | 0.073 |
| 3-Hydroxyisovaleric Acid | 0.11 (0.09, 0.14) | 0.14 (0.11, 0.16) | 0.023 |
| Glyceric Acid | 0.88 (0.66, 1.05) | 0.44 (0.27, 0.53) | <0.001 |
| Threonine | 9.56 (8.01, 10.06) | 8.25(6.99, 9.40) | 0.059 |
| Methionine | 2.18 (1.84, 2.45) | 1.89 (1.64, 1.99) | 0.008 |
| 4-Hydroxyproline | 3.76 (2.62, 4.78) | 2.74 (2.46, 3.80) | 0.039 |
| Creatinine | 0.39 (0.34, 0.48) | 0.36 (0.31, 0.43) | 0.039 |
| Phenylalanine | 7.84 (7.51, 8.13) | 7.18 (6.62, 7.62) | 0.004 |
| Myo-Inositol | 0.67 (0.59, 0.83) | 0.57 (0.50, 0.66) | 0.029 |