Table 2 Kynurenine pathway metabolites in Chronic and Episodic Cluster Headache groups
From: Altered serum levels of kynurenine metabolites in patients affected by cluster headache
Episodic CH (n = 15) | Chronic CH (n = 6) | U p | |
|---|---|---|---|
Trp (μg/ml) (mean ± SD) | 6.60 ± 1.74 | 6.57 ± 1.32 | 43.5 |
0.91 | |||
KYN (μg/ml) (mean ± SD) | 0.20 ± 0.07 | 0.31 ± 0.16 | 20.0 |
0.05 | |||
KYNA (ng/ml) (mean ± SD) | 1.91 ± 1.43 | 2.52 ± 1.67 | 34.0 |
0.42 | |||
ANA (ng/ml) (mean ± SD) | 2.67 ± 1.44 | 3.30 ± 1.18 | 30.0 |
0.27 | |||
3-HK (ng/ml) (mean ± SD) | 1.21 ± 0.94 | 0.66 ± 0.29 | 30.5 |
0.27 | |||
3-HANA (ng/ml) (mean ± SD) | 4.44 ± 1.69 | 4.22 ± 1.11 | 42.0 |
0.85 | |||
QUINA (ng/ml) (mean ± SD) | 9.33 ± 2.36 | 8.54 ± 2.17 | 7.00 |
0.93 | |||
5-HIAA (ng/ml) (mean ± SD) | 18.4 ± 6.32 | 25.8 ± 10.9 | 21.0 |
0.07 | |||
XA (ng/ml) (mean ± SD) | 1.33 ± 1.59 | 1.18 ± 1.07 | 6.00 |
0.93 |