Table 2 Association of plasma free amino acid profiles with lymph nodes metastasis status in gastric cancer patients

Asp

40.43 ± 8.84

39.65 ± 15.42

0.84

Thr

573.42 ± 151.47

482.93 ± 133.95

0.03*

Ser

184.48 ± 51.23

166.08 ± 54.06

0.22

Glu

143.20 ± 44.02

142.54 ± 51.59

0.96

Gly

314.26 ± 108.72

261.57 ± 85.22

0.06

Ala

402.78 ± 144.67

338.41 ± 115.88

0.08

Cys

57.73 ± 16.46

55.65 ± 19.27

0.69

Val

243.34 ± 59.76

223.94 ± 51.90

0.22

Met

34.85 ± 9.21

31.90 ± 10.38

0.30

Ile

77.43 ± 16.51

78.43 ± 26.45

0.88

Leu

152.75 ± 36.54

145.56 ± 37.56

0.50

Tyr

77.68 ± 33.21

75.80 ± 34.56

0.85

Phe

99.41 ± 22.06

90.22 ± 24.55

0.17

Lys

199.46 ± 48.14

175.67 ± 51.18

0.10

His

84.32 ± 22.81

71.23 ± 15.60

0.02*

Arg

113.70 ± 31.05

101.86 ± 40.30

0.26

Pro

96.68 ± 32.29

95.43 ± 41.45

0.91

NH3

139.91 ± 61.67

148.00 ± 60.06

0.64

NEAAs

1419.42 ± 328.68

1253.62 ± 355.51

0.10

EAAs

1380.65 ± 280.45

1213.08 ± 298.31

0.04*

BCAAs

473.52 ± 106.55

447.93 ± 107.62

0.40

GAAs

2213.05 ± 483.57

1923.79 ± 486.47

0.04*

TAAs

2939.98 ± 613.49

2614.70 ± 640.08

0.07