Table 1.

Different metabolites in asthma patients compared with healthy control using UHPLC-QTOF-MS in positive ion mode

MS2 name	MS2 score	Type	P-value	Log2Fold change
1-Hexadecanoyl-sn-glycerol_1	0.817	MS2 forward	0.001	2.3
Glycerol 1-stearate_1	0.623	MS2 reverse	0.000	2.0
Sphingosine_2	0.677	MS2 forward	0.003	1.7
PC (16:0/16:0)	16.000	MS2 reverse	0.005	1.6
1-Hexadecanoyl-sn-glycerol_2	0.961	MS2 reverse	0.048	1.5
Glu-Pro_1	0.729	MS2 reverse	0.010	-1.5
Pro-Arg_2	0.624	MS2 forward	0.011	-1.5
L-Arginine_4	0.987	MS2 reverse	0.010	-1.5
Phe-His_1	0.937	MS2 forward	0.004	-1.6
N-Acetyl-D-glucosamine_2	0.643	MS2 forward	0.043	-1.7
Gamma-L-Glutamyl-L-valine_1	0.942	MS2 forward	0.003	-1.7
Glu-Pro_2	0.652	MS2 forward	0.007	-1.8
Lys-Pro_3	0.739	MS2 forward	0.010	-1.8
Phe-Ile	0.742	MS2 forward	0.035	-1.8
Phe-His_3	0.937	MS2 forward	0.004	-1.8
Pro-Val_2	0.608	MS2 reverse	0.009	-1.9
Urocanic acid_1	0.933	MS2 forward	0.002	-2.0
Tyr-Pro_2	0.935	MS2 reverse	0.021	-2.1
His-Pro	0.907	MS2 forward	0.007	-2.1
Tyr-Pro_1	0.954	MS2 reverse	0.022	-2.1
N-Acetyl-D-glucosamine_1	0.908	MS2 reverse	0.047	-2.1
Lys-Phe_1	0.774	MS2 forward	0.020	-2.1
Thr-Phe_1	0.791	MS2 forward	0.007	-2.2
L-Citrulline_1	0.935	MS2 reverse	0.049	-2.3
Arg-Phe_1	0.807	MS2 forward	0.003	-2.5
Adenine_1	0.834	MS2 reverse	0.007	-2.5
Phe-Tyr_1	0.802	MS2 forward	0.004	-2.6
Phe-Gln_1	0.888	MS2 forward	0.001	-2.8
Tyr-Ala_2	0.935	MS2 forward	0.007	-4.4
Phe-Ser_1	0.856	MS2 forward	0.005	-5.1