. 2020 Jul 27;31(9):1825–1832. doi: 10.1021/jasms.0c00070

Table 1. Twenty-Five Plaque-Specific m/z Species in Both, ldlr^–/– and apoe^–/–, Mouse Models.

	Pearson correlation coefficient
observed m/z by TOF	ldlr^–/–	apoe^–/–	observed m/z by Orbitrap	lipid assignment	MS experiment level for ID	ion mode	mass error (in ppm)
409.3	0.47	0.61	409.2366	[LPA 16:0–H]⁻	MS1	NEG	+1.3
459.2	0.50	0.46	459.2476	[LPA 18:1+Na]⁺	MS1	POS	–1.3
463.3	0.41	0.54	463.2839	[LPA 20:1–H]⁻	MS1	NEG	+1.9
464.3	0.44	0.59	464.3142	[LPE O-18:1–H]⁻	MS1	NEG	–1.0
480.3	0.52	0.62	480.3099	[LPE 18:0–H]⁻/ [LPC 16:0–CH₃]⁻	MS2	NEG	+0.6
482.3	0.55	0.50	482.3600	[LPC O-16:0+H]⁺/ [LPE O-19:0+H]⁺	MS1	POS	–1.0
487.3	0.47	0.44	487.2790	[LPA 20:1+Na]⁺	MS1	POS	–1.0
496.3	0.58	0.62	496.3398	[LPC 16:0+H]⁺	MS2	POS	+0.0
496.6	0.60	0.49	/	/	/	POS	/
506.3	0.43	0.41	506.3257	[LPC 18:1-CH₃]⁻/[LPE 20:1-H]⁻	MS1	NEG	+1.0
510.4	0.59	0.55	510.3554	[LPC 17:0+H]⁺/[LPE 20:0+H]⁺	MS1	POS	+0.0
518.3	0.59	0.63	518.3216	[LPC 16:0+Na]⁺	MS2	POS	–0.2
520.3	0.63	0.63	520.3400	[LPC 18:2+H]⁺	MS2	POS	+0.4
522.4	0.56	0.59	522.3557	[LPC 18:1+H]⁺	MS2	POS	+0.6
524.4	0.45	0.52	524.3717	[LPC 18:0+H]+	MS2	POS	+1.1
534.3	0.57	0.57	534.2951	[LPC 16:0+K]⁺	MS2	POS	–0.9
538.4	0.43	0.53	538.3862	[LPC 19:0+H]⁺/ [LPE 22:0+H]⁺	MS1	POS	–1.0
542.4	0.58	0.57	542.3213	[LPC 18:2+Na]⁺	MS1	POS	–0.8
544.4	0.59	0.57	544.3389	[LPC 18:1+Na]⁺	MS2	POS	+2.8
546.4	0.56	0.49	546.3540	[LPC 18:0+Na]⁺	MS2	POS	+1.8
560.3	0.49	0.45	560.3123	[LPC 18:1+K]⁺	MS2	POS	+0.0
562.3	0.49	0.49	562.3278	[LPC 18:0+K]⁺	MS2	POS	+0.0
599.3	0.41	0.52	599.3216	[LPI 18:0–H]⁻	MS2	NEG	+2.4
689.6	0.42	0.53	689.5620	[SM d18:0_16:0-CH₃]⁻	MS2	NEG	+0.7
727.6	0.40	0.44	727.5731	[SM 34:0;2+Na]⁺	MS2	POS	+1.0

Table 1. Twenty-Five Plaque-Specific m/z Species in Both, ldlr–/– and apoe–/–, Mouse Models.