Diagnosis

MDD n = 38

significant differences

Sample name

young men n = 7 a

young women n = 18 b

old men n = 3 c

old women n = 10 d

5-HTRP/TRP

0.18 ± 0.10

0.16 ± 0.05

0.02

0.15 ± 0.13

-

serotonin/TRP

5.24 ± 5.24

4.47 ± 3.24

2.02 ± 1.58

3.19 ± 3.06

-

5-HIAA/TRP

0.48 ± 0.46

0.65 ± 0.64

0.38 ± 0.46

0.92 ± 0.91

-

KYN/TRP

42.19 ± 23.68

28.66 ± 8.23

17.06 ± 6.65

33.65 ± 12.12

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