Table 5.
Correlations between salivary and plasma/urine total antioxidant capacity measured by FRAP in children with chronic kidney disease (CKD).
| Total FRAP plasma | FRAP-UA Plasma | UA Plasma | ΔFRAP Plasma | Total FRAP Urine | FRAP-UA Urine | UA Urine | ΔFRAP Urine | |
|---|---|---|---|---|---|---|---|---|
| Total FRAP NWS |
−0.12 | −0.42 * | −0.01 | 0.28 | 0.01 | −0.05 | 0.04 | 0.17 |
| FRAP-UA NWS |
−0.12 | −0.32 | −0.03 | 0.19 | 0.09 | 0.01 | 0.13 | 0.25 |
| UA NWS |
−0.10 | −0.40 * | 0.01 | 0.29 | −0.04 | −0.08 | −0.02 | 0.1 |
| ΔFRAP NWS |
0.05 | −0.16 | 0.10 | 0.19 | −0.16 | −0.14 | −0.16 | −0.09 |
| Total FRAP SWS |
0.26 | 0.45 * | 0.16 | −0.20 | 0.94 * | 0.83 * | 0.93 * | 0.21 |
| FRAP-UA SWS |
−0.01 | 0.19 | −0.07 | −0.18 | 0.72 * | 0.65 * | 0.71 * | 0.14 |
| UA SWS |
0.36 * | 0.52 * | 0.25 | −0.19 | 0.93 * | 0.84 * | 0.93 * | 0.22 |
| ΔFRAP SWS |
0.44 * | 0.50 * | 0.34 | −0.13 | 0.47 * | 0.44 * | 0.47 * | 0.15 |
FRAP—ferric ion reducing antioxidant parameter; FRAP-UA—UA-independent FRAP; NWS—non-stimulated whole saliva; SWS—stimulated whole saliva; UA—uric acid. * p < 0.05.