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. 2021 Aug 30;16(8):e0256784. doi: 10.1371/journal.pone.0256784

Table 2. Plasma concentration values (micromoles) of dysregulated metabolites according to disease severity.

Metabolites G1
N = 37
G2
N = 41
G3
N = 35
G4
N = 45
Correlation with disease severity (Spearman coefficient (r), p value (p))
Kynurenine:Tryptophan 0.034±0.007 0.08 (0.05–0.11) 0.075 (0.05–0.12) 0.13 (0.08–0.19) 0.5, <0.0001
Glutamic acid 129.0 (104.0–157.0) 143.0 (109.5–202.0) 196.0±69.6 201.5 (134.5–243.8) 0.4, <0.0001
Phenylalanine 61.05 (54.33–68.8) 76.10 (61.45–91.70) 83.9 (70.23–102) 94.15±27.37 0.5, <0.0001
Kynurenine 1.76 (1.62–2.14) 2.86 (2.22–4.14) 3.09±1.62 4.12 (2.64–5.47) 0.4, <0.0001
Butyric acid 0.67±0.24 0.75 (0.55–0.94) 1.02 (0.89–1.28) 0.89 (0.72–1.17) 0.4, <0.0001
Pyruvic acid 101.6±23.2 132 (107.5–230.5) 107.9±25.93 108 (82.9–132) 0.02, 0.8
LysoPC a C26:1 0.06 (0.05–0.09) 0.081±0.03 0.09±0.03 0.11±0.03 0.5, <0.0001
LysoPC a C26:0 0.12 (0.091–0.17) 0.17±0.052 0.18±0.059 0.20 (0.17–0.24) 0.4, <0.0001
LysoPC a C28:1 0.14±0.043 0.14 (0.11–0.19) 0.13 (0.12–0.20) 0.19±0.065 0.3, <0.0001
LysoPC a C28:0 0.16±0.039 0.19±0.060 0.19±0.067 0.23±0.069 0.3, <0.0001
PC ae C36:0 1.28±0.28 1.24±0.28 1.37±0.35 1.72±0.53 0.3, <0.0001
C4 0.18 (0.15–0.29) 0.20 (0.14–0.28) 0.23 (0.19–0.29) 0.38 (0.19–0.51) 0.2, 0.003
C5 0.09 (0.07–0.14) 0.10 (0.08–0.13) 0.19 (0.13–0.26) 0.22 (0.15–0.33) 0.5, <0.0001
C10:2 0.089 (0.07–0.10) 0.10 (0.08–0.13) 0.16±0.032 0.17±0.026 0.7, <0.0001
C10:1 0.18±0.039 0.21 (0.18–0.27) 0.22 (0.18–0.29) 0.25 (0.21–0.35) 0.4, <0.0001
C10 0.17 (0.14–0.24) 0.223±0.095 0.26 (0.120–0.35) 0.29 (0.19–0.38) 0.4, <0.0001
trans-Hydroxyproline 11.5 (6.21–17.85) 6.52 (3.6–10.04) 4.54 (3.15–7.12) 4.55±1.73 -0.4, <0.0001
Aspartic acid 18.5 (13.7–26.2) 15 (10.55–19.6) 12.59±4.37 11 (7.57–16.4) -0.3, <0.0001
Tryptophan 50.54±12.35 39.63±13.58 36.98±13.57 34.46±15.45 -0.4, <0.0001
Citric acid 128.8±29.22 112 (84–136.5) 100.2±29.7 81.9±26.09 -0.5, <0.0001
LysoPC a C14:0 4.12±1.62 1.78 (1.25–3.111) 1.98 (1.51–2.34) 1.83 (1.55–2.44) -0.4, <0.0001
LysoPC a C16:1 3.63 (2.77–4.25) 2.34 (1.59–3.35) 2.15±0.84 1.98 (1.59–2.57) -0.3, <0.0001
LysoPC a C18:2 25.09 (19.3–30.9) 15.9 (9.14–22.5) 12.71 (8.31–17.0) 11.18 (7.77–13.9) -0.5, <0.0001
LysoPC a C18:1 20.95 (17.5–23.7) 14.9 (11.0–20.6) 14.9 (11.5–19.06) 14.62±4.65 -0.3, <0.0001