Table 2 Plasma and urinary nitric oxide-related markers of the study population stratified according to ethnicity
Black (n = 539) | White (n = 566) | p value | |
|---|---|---|---|
Plasma nitric oxide-related markers† | |||
Arginine (µM) | 92.7 (60.3–149) | 83.8 (56.7–117) | <0.001 |
Homoarginine (µM) | 2.05 (0.97–4.33) | 2.05 (1.06–3.77) | 0.99 |
ADMA (µM) | 0.60 (0.39–0.92) | 0.52 (0.31–0.78) | <0.001 |
SDMA (µM) | 0.533 ± 0.142 | 0.562 ± 0.129 | 0.012 |
Urinary nitric oxide-related markers | |||
Arginine (µM/mM creatinine) | 2.37 (1.38–4.18) | 2.23 (1.31–3.95) | 0.004 |
Homoarginine (µM/mM creatinine) | 0.15 (0.04–0.52) | 0.15 (0.05–0.63) | 0.81 |
ADMA (µM/mM creatinine) | 3.82 (2.27–6.01) | 3.68 (2.15–5.94) | 0.033 |
SDMA (µM/mM creatinine) | 3.73 (2.44–5.36) | 3.89 (2.59–5.76) | 0.022 |
Ornithine/citrulline (µM/mM creatinine) | 3.48 (2.19–5.49) | 3.57 (1.91–5.51) | 0.017 |
Nitrate (µM/mM creatinine) | 59.6 (32.7–127) | 70.5 (37.8–146) | <0.001 |
Nitrite (µM/mM creatinine) | 0.29 (0.10–0.90) | 0.28 (0.11–0.95) | 0.51 |
Urinary nitrate-to-nitrite ratio | 204 (64.49–573) | 248 (88.19–601) | <0.001 |
