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. Author manuscript; available in PMC: 2016 Jun 1.
Published in final edited form as: Metabolomics. 2014 Sep 9;11(3):571–582. doi: 10.1007/s11306-014-0718-y

Table 2. Stress-induced % change in compounds.

Compound name and pathway Pre-stress: median (frstqrt, thrdqrt) Post-stress median (frstqrt, thrdqrt) % change: median (frstqrt, thrdqrt) p value
Tyrosine
 Tyrosine 93.84 (75.08, 119.77) 84.57 (71.43, 108.15) −11.71 (−15.60, −6.21) <.001
 4-Hydroxyphenyllactic acid 88.62 (75.60, 107.89) 83.58 (70.02, 112.59) −3.46 (−6.3, 4.61) 0.19
 4-Hydroxybenzoic acid 53.80 (20.41, 130.28) 53.21 (18.3, 133.76) −2.72 (−10, 5.49) 0.27
 Homogentisic acid 67.88 (55.90, 106.78) 61.04 (44.72, 91.53) −11.05 (−27.42, −1.23) <.001
 Methoxy-hydroxyphenly glycol 87.71 (75.10, 111.06) 95.89 (77.16, 109.87) .65 (−5.77, 7.51) 0.54
 Homovanillic acid 80.34 (66.71, 104.77) 73.49 (54.85, 92.10) −9.40 (−21.03, −1.87) 0.014
Tryptophan
 Tryptophan 99.46 (85.02, 105.25) 94.72 (80.14, 99.52) −3.66 (−7.66, .01) 0.003
 5-hydroxytryptophan 1.1 (.1, 2.16) 1.18 (.1, 1.94) 0 (−12.61, 3.73) 0.68
 Serotonin 76.85 (36.46, 122.42) 85.31 (47.47, 135.1) 8.79 (−22.65, 62.49) 0.14
 5-Hydroxyindoleacetic acid 75.17 (56.56, 110.81) 75.14 (51.02, 101.18) −5.63 (−18.66, 6.03) 0.27
N-acetylserotonin 81.56 (63.49, 111.94) 76.99 (66.94, 103.72) −4.6 (−7.67, .17) 0.022
 Kynurenine 98.24 (87.9, 111.78) 93.60 (83.37, 109.83) −3.92 (−8.86, .23) 0.003
 3-Hydroxykynurenine 90.04 (71.40, 118.61) 79.92 (62.76, 100.64) −9.2 (−13.34, −1.59) <.001
 3-Hydroxyanthranillic acid 4.48 (.10, 53.71) 3.13 (.10, 45.81) 0 (−14.71, 6.42) 0.84
 Indole-3-lactic acid 85.50 (65.22, 115.03) 76.24 (59.43, 108.56) −8.54 (−13.37, −5.48) <.001
 Indole-3-propionic acid 68.68 (41.64, 125.43) 64.27 (42.58, 92.46) −3.50 (−9.98, 3.60) 0.14
Purine
 Hypoxanthine 71.41 (59.75, 88.94) 87.17 (73.49, 106.56) 16.34 (−2.0, 33.26) 0.009
 Xanthine 83.54 (70.68, 108.52) 87.64 (68.61, 110.82) −1.31 (−6.14, 13.51) 0.88
 Uric Acid 94.80 (90.10, 102.64) 93.96 (87.01, 103.10) −.86 (−2.89, .84) 0.053
One-carbon metabolism
 Methionine 97.3 (77.7, 111.96) 86.23 (71.27, 100.12) −10.54 (−17.60, −5.31) <.001
Tocopherol
 Tocopherol-gamma 45.73 (31.95, 98.20) 42.62 (25.95, 83.52) −9.81 (−35.19, 5.38) 0.17
 Tocopherol-alpha 72.52 (47.46, 80.57) 64.86 (38.70, 83.69) −11.47 (−33.51, 12.54) 0.23