Table 2 Plasma concentrations of kynurenine, l-arginine and creatine in the patients with various stages of silicosis
Stage I | Stage II | Stage III | P value | |
|---|---|---|---|---|
N | 9 | 8 | 13 | |
Kynurenine (μmol/mL) | 3.1 ± 0.4 | 3.1 ± 0.7 | 4.1 ± 0.8*▲ | 0.002 |
l-arginine (μmol/mL) | 71.4 ± 14.0 | 58.7 ± 19.2 | 58.3 ± 14.4 | 0.137 |
Creatine (μmol/mL) | 24.8 ± 8.9 | 22.8 ± 10.4 | 19.8 ± 9.7 | 0.480 |