Diagnosis | HC (n = 38) | MDD (n = 38) | significant differences | ||||||
sample name | young men (n = 25) | young women (n = 10) | old men (n = 20) | old women (n = 20) | young men (n = 7) | young women (n = 18) | old men (n = 3) | old women (n = 10) | |
Tryptophan (μM) | 63.92 ± 10.84 | 67.79 ± 9.30 | 68.89 ± 13.32 | 47.68 ± 7.19 | 64.09 ± 13.77 | 58.48 ± 10.40 | 59.11 ± 2.026 | 51.24 ± 11.01 | *1 |
Serotonin (nM) | 1.29 ± 1.97 | 42.90 ± 35.49 | 68.61 ± 90.31 | 4.49 ± 6.03 | 325.6 ± 351.4 | 267.6 ± 204.4 | 120.3 ± 96.01 | 160.2 ± 145.2 | *2 |
Kynurenine (nM) | 713.18 ± 136.02 | 1588.09 ± 313.52 | 1696.82 ± 1074.65 | 719.94 ± 173.87 | 2506.5 ± 1042.9 | 1653.0 ± 510.16 | 1014.2 ± 418.25 | 1666.4 ± 534.60 | *3 |
5-Hydroxyindoleacetic acid (nM) | 9.00 ± 1.92 | 30.87 ± 9.55 | 33.15 ± 12.57 | 13.17 ± 3.30 | 28.04 ± 22.07 | 35.00 ± 28.99 | 22.82 ± 28.11 | 48.68 ± 58.22 | *4 |