Lipidomic analysis of human plasma reveals ether-linked lipids that are elevated in morbidly obese humans compared to lean

Table 2 Identifications of ions from MS/MS analysis

Ion of interest from original LC/MS analysis	Tentative ID based on MS/MS analysis	P-value	Ave (c)	Ave (pre)
750.5399	PE(P-18:0/20:4(5Z,8Z,11Z,14Z))	0.016	8.25	13.73
838.5599	PE(18:2(9Z,12Z)/20:2(11Z,14Z))	0.039	17.67	27.82
829.57	PC(16:0/18:2(9Z,12Z))	0.022	0.01	0.18
802.5599	PC(O-16:0/18:2(9Z,12Z))	0.019	49.22	64.29
816.57	PC(O-16:0/18:2(9Z,12Z))	0.031	161.81	208.10
830.59	PC(O-18:0/18:2(9Z,12Z))	0.003	32.48	45.40
844.5999	PC(O-18:0/18:2(9Z,12Z))	0.005	94.68	130.23
832.5999	PC(O-18:0/18:1(9Z))	0.005	8.85	14.46
868.5999	PC(O-18:0/20:4(5Z,8Z,11Z,14Z))	0.010	41.54	63.87
870.6199	PC(O-18:0/20:3(8Z,11Z,14Z))	0.028	30.86	44.71
885.5499	PI(18:0/20:4(5Z,8Z,11Z,14Z))	0.011	45.66	62.11

p-values were calculated using an unpaired t-test comparison of group relative abundance means for each ion from the original run. c = control, pre = obese pre-surgical. Ave (c) and (pre) values are average relative abundance in arbitrary units of each ion for each group from the original run.

ISSN: 1758-5996