Table 2.
Characteristics of unstimulated saliva collected on 54 subjects.
| Salivary characteristics mesured | Median (Q1; Q3) | |||
| Unstimulated salivary flow (ml/min) | 0.63 (0.41; 0.92) | |||
| Protein concentration (mg/ml) | 0.65 (0.45; 1.02) | |||
| Lipolytic activity (mU/ml) | 0.28 (0.16; 0.32) | |||
| Antioxidant capacity (TROLOX µM/ml) | 985 (600; 1783) | |||
| Lipocalin concentration (ng/ml) | 13.6 (9.9; 23.4) | |||
| Fatty acids | TFA | FFA | ||
| % | Concentration (µg/ml) | % | Concentration (µg/ml) | |
| Mean ± SD | Median (Q1; Q3) | Mean ± SD | Median (Q1; Q3) | |
| 14:0 | 1.12 ± 1.87 | 0.00 (0.00; 0.11) | 1.24 ± 1.00 | 0.02 (0.02; 0.03) |
| 16:0 | 16.76 ± 9.14 | 0.85 (0.23; 1.68) | 17.00 ± 8.75 | 0.37 (0.25; 0.53) |
| 16:1 (16:1n-9; 16:1n-7) | 6.41 ± 7.46 | 0.09 (0.05; 0.22) | ||
| 16:1n-9 | 2.90 ± 3.65 | 0.10 (0.00; 0.20) | ||
| 16:1n-7 | 1.09 ± 0.76 | 0.05 (0.00; 0.10) | ||
| 18:0 | 19.79 ± 7.39 | 0.90 (0.50; 1.60) | 13.20 ± 7.41 | 0.30 (0.20; 0.38) |
| 18:1 (18:1 t; 18:1n-9; 18:1n-7) | 44.80 ± 11.78 | 1.07 (0.58; 2.02) | ||
| 18:1 t | 1.47 ± 0.73 | 0.10 (0.00; 0.10) | ||
| 18:1n-9 | 25.99 ± 10.49 | 1.00 (0.50; 2.55) | ||
| 18:1n-7 | 3.40 ± 5.66 | 0.10 (0.10; 0.20) | ||
| 18:2n-6 | 10.58 ± 6.59 | 0.40 (0.20; 1.18) | 11.68 ± 5.22 | 0.28 (0.14; 0.50) |
| 18:3n-3 | 1.40 ± 1.50 | 0.00 (0.00; 0.10) | 0.45 ± 0.42 | 0.01 (0.00; 0.02) |
| 20:0 | 1.92 ± 1.34 | 0.10 (0.00; 0.10) | 0.28 ± 0.31 | 0.01 (0.00; 0.01) |
| 20:1n-9 | 2.12 ± 1.92 | 0.10 (0.00; 0.10) | 0.49 ± 0.36 | 0.01 (0.00; 0.02) |
| 20:3n-6 | 1.50 ± 1.60 | 0.10 (0.00; 0.10) | 1.28 ± 0.82 | 0.02 (0.01; 0.04) |
| 20:4n-6 | 2.95 ± 1.82 | 0.10 (0.10; 0.20) | 2.37 ± 1.46 | 0.06 (0.03; 0.11) |
| 21:0 | 0.31 ± 0.40 | 0.00 (0.00; 0.00) | 0.00 ± 0.00 | 0.00 (0.00; 0.00) |
| 22:0 | 2.56 ± 2.27 | 0.10 (0.10; 0.10) | ||
| 22:6n-3 | 0.95 ± 0.69 | 0.00 (0.00; 0.10) | 0.51 ± 0.61 | 0.01 (0.00; 0.02) |
| 24:0 | 0.29 ± 0.65 | 0.00 (0.00; 0.00) | ||
| 24:0 (20:5n-3) | 3.17 ± 2.44 | 0.10 (0.10; 0.20) | ||
| Total | 100 | 4.48 (2.6; 9.16) | 100 | 2.32 (1.63; 4.00) |
Free fatty acids 16:1 and 18:1 are presented as the sum of their isomers since GC-MS does not distinguish them. 24:0 and 20:5n-3 cannot be separated by GC-FID. Fatty acids composition for TFA and FFA is expressed in the mean ± SD relative percentage of each fatty acid among all the fatty acids detected and in the median (Q1, first quartile; Q3, third quartile) of the concentration of each fatty acid (µg/ml of saliva).