Table 1.
Lipid species detected in individual hippocampal neurons.
| Lipid species | Formula | Adduct Type | Calculated m/z | Observed m/z | Mass Error (ppm) | RT (min) | |
|---|---|---|---|---|---|---|---|
| Glycerophospholipids | PC (32:0) | C40H80NO8P | [M + H]+ | 734.5694 | 734.5693 | 0.0 | 16.7 |
| PC (34:0) | C42H84NO8P | [M + H]+ | 762.6007 | 762.6003 | −0.5 | 18.3 | |
| PC (34:1) | C42H82NO8P | [M + H]+ | 760.5851 | 760.5847 | −0.5 | 16.9 | |
| PC (34:2) | C42H80NO8P | [M + H]+ | 758.5694 | 758.5675 | −2.5 | 15.7 | |
| PC (36:0) | C44H88NO8P | [M + H]+ | 790.6320 | 790.6294 | −3.3 | 19.8 | |
| PC (36:1) | C44H86NO8P | [M + H]+ | 788.6164 | 788.6151 | −1.6 | 18.4 | |
| PC (36:2) | C44H84NO8P | [M + H]+ | 786.6007 | 786.5988 | −2.4 | 17.0 | |
| PC (36:4) | C44H80NO8P | [M + H]+ | 782.5694 | 782.5728 | 4.3 | 15.4 | |
| PC (38:1) | C46H90NO8P | [M + H]+ | 816.6477 | 816.6494 | 2.1 | 19.8 | |
| PC (38:5) | C46H82NO8P | [M + H]+ | 808.5851 | 808.5848 | −0.4 | 15.6 | |
| PC (38:6) | C46H80NO8P | [M + H]+ | 806.5694 | 806.5730 | 4.5 | 15.0 | |
| PC (40:6) | C48H84NO8P | [M + H]+ | 834.6007 | 834.5994 | −1.6 | 16.4 | |
| PE (34:0) | C39H78NO8P | [M + H]+ | 720.5538 | 720.5514 | −3.3 | 19.4 | |
| PE (34:1) | C39H76NO8P | [M + H]+ | 718.5381 | 718.5367 | −1.9 | 16.9 | |
| PE (36:2) | C41H78NO8P | [M + H]+ | 744.5538 | 744.5510 | −3.8 | 17.1 | |
| PE (36:4) | C41H74NO8P | [M + H]+ | 740.5225 | 740.5236 | 1.5 | 15.6 | |
| PE (38:1) | C43H84NO8P | [M + H]+ | 774.6007 | 774.6045 | 4.9 | 17.6 | |
| PE (38:5) | C43H76NO8P | [M + H]+ | 766.5381 | 766.5377 | −0.5 | 15.7 | |
| PE (38:6) | C43H74NO8P | [M + H]+ | 764.5225 | 764.5261 | 4.7 | 15.2 | |
| PE (40:1) | C45H88NO8P | [M + H]+ | 802.6320 | 802.6302 | −2.2 | 19.1 | |
| PE (40:6) | C45H78NO8P | [M + H]+ | 792.5538 | 792.5529 | −1.1 | 16.7 | |
| PE (40:7) | C45H76NO8P | [M + H]+ | 790.5381 | 790.5403 | 2.8 | 15.4 | |
| PE (42:2) | C47H90NO8P | [M + H]+ | 828.6477 | 828.6461 | −1.9 | 18.9 | |
| PI (38:4) | C47H83O13P | [M + NH4]+ | 904.5910 | 904.5955 | 5.0 | 15.0 | |
| PI (38:5) | C47H81O13P | [M + NH4]+ | 902.5753 | 902.5710 | −4.8 | 13.8 | |
| PS (36:1) | C42H80NO10P | [M + H]+ | 790.5593 | 790.5565 | −3.5 | 15.2 | |
| PS (38:4) | C44H78NO10P | [M + H]+ | 812.5436 | 812.5456 | 2.2 | 16.1 | |
| PS (40:7) | C46H76NO10P | [M + H]+ | 834.5279 | 834.5239 | −4.8 | 18.0 | |
| Sphingolipids | HexCer (d18:1/18:0) | C42H81NO8 | [M + H]+ | 728.6034 | 728.6070 | 5.0 | 16.8 |
| HexCer (d18:1/18:1) | C42H81NO8 | [M + H]+ | 726.5878 | 726.5850 | −3.9 | 16.4 | |
| HexCer (d18:1/24:0) | C48H93NO8 | [M + H]+ | 812.6973 | 812.6939 | −4.2 | 21.0 | |
| HexCer (d18:1/24:0-OH) | C48H93NO9 | [M + H]+ | 828.6923 | 828.6912 | −1.3 | 20.6 | |
| HexCer (d18:1/24:1) | C48H93NO8 | [M + H]+ | 810.6817 | 810.6820 | 0.4 | 19.6 | |
| SM (d18:1/16:0) | C39H79N2O6P | [M + H]+ | 703.5748 | 703.5760 | 1.7 | 15.2 | |
| SM (d18:1/18:0) | C41H83N2O6P | [M + H]+ | 731.6061 | 731.6082 | 2.9 | 18.7 | |
| SM (d18:1/24:0) | C47H95N2O6P | [M + H]+ | 815.7000 | 815.6962 | −4.6 | 21.7 | |
| Sterol lipids | CE (16:0) | C43H76O2 | [M + NH4]+ | 642.6183 | 642.6160 | −3.6 | 25.2 |
| CE (24:0) | C51H92O2 | [M + NH4]+ | 754.7446 | 754.7464 | 2.4 | 27.6 | |
| Cholesterol | C27H46O | [M − H2O + H]+ | 369.3515 | 369.3531 | 4.3 | 15.1 | |
| Glycerolipids | DG (42:10) | C45H68O5 | [M + NH4]+ | 706.5405 | 706.5416 | 1.3 | 15.1 |
| DG (44:11) | C47H70O5 | [M + NH4]+ | 732.5561 | 732.5585 | 3.3 | 15.3 |