Subjects | old men (n = 20) | DM(n = 20) | significance |
Tryptophan | 1407 ± 272 | 1323 ± 316 | |
L-5-Hydroxytryptophan | 0.014 ± 0.029 | 0.048 ± 0.038 | p < 0.01 |
Serotonin | 0.66 ± 1.45 | 2.15 ± 4.54 | p < 0.05 |
Kynurenine | 35.3 ± 22.4 | 33.8 ± 11.2 | |
5-hydroxy-tryptophol | Tr | Tr | |
Tryptophol | Tr | Tr | |
5-Hydroxyindoleacetic acid | 0.634 ± 0.240 | 0.934 ± 0.405 | p < 0.01 |
Indole-3-acetic acid | 42.6 ± 15.0 | 54.1 ± 28.8 | p < 0.01 |
Anthranilic acid | 0.220 ± 0.165 | 0.298 ± 0.110 | |
Kynurenic acid | 1.21 ± 0.41 | 1.79 ± 0.66 | p < 0.01 |
Quinaldic acid | 0.153 ± 0.134 | 0.156 ± 0.180 | |
3-Indolebutyric acid | 0.121 ± 0.097 | 0.099 ± 0.159 | |
3-Hydroxykynurenine | 0.058 ± 0.050 | 0.105 ± 0.053 | |
3-hydroxyanthranilic acid | 0.133 ± 0.149 | 0.310 ± 0.214 | p < 0.01 |
Xanthurenic acid | 0.254 ± 0.109 | 0.305 ± 0.107 |