Table 6 Content of Sodium (na), TRP, KYN and 3HAA and activity of IDO (Indoleamine-2,3-dioxygenase), and TDO (Tryptophan-2,3-dioxygenase) by age group; Of the total sample of 81 participants, IDO/TDO could not be analyzed in 14 cases.

From: Determination of 3-hydroxyanthranilic acid in the sweat of healthy older adults

Age

(years)

Na [µg/sample]

TRP

KYN

3HAA

IDO/TDO (KYN/TRP)*100

[fmol/µg Na]

[fmol/µg Na]

[pmol/µg Na]

50–59

(n = 21)

884.42

(432.82-1991.75)

2233.30

(196.28-7960.63)

79.45

(27.42-191.04)

20.59

(3.945–37.81)

7.40

(1.04–47.08)

60–69

(n = 39)

761.07

(403.86-2269.15)

2190.66

(147.22-7994.99)

84.66

(24.64-354.09)

25.028

(6.567–53.55)

6.97

(1.23–58.85)

70–79

(n = 21)

640.34

(367.95-1225.35)

2304.77

(339.26-10475.16)

88.40

(52.25-192.17)

29.203

(0.502–67.065)

8.23

(0.91–36.78)