Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1950288 | Biochimica et Biophysica Acta (BBA) - Molecular and Cell Biology of Lipids | 2006 | 10 Pages |
The main phospholipids in rat peritoneal surface layer were analyzed by normal-phase high-performance liquid chromatography (HPLC) coupled with electrospray ionization (ESI) ion-trap mass spectrometry (MS). By using a silica gel column and a gradient of hexane/isopropanol/water as mobile phase containing 5 mmol/L ammonium formate as modifiers, a baseline separation of glycerophosphoehtanolamine (PE), phosphatidylinositol (PI), phosphatidylserine (PS), phosphatidylcholine (PC), sphingomyelin (SM) and lyso-phosphatidylcholine (LPC) was obtained and more than 90 phospholipid constituents in rat peritoneal surface were identified and determined by on-line ion-trap MS detection. The major ethanolamine glycerophospholipids in rat peritoneal surfaces were plasmalogens that were highly enriched in polyunsaturated fatty acids at the sn-2 position. In addition, the fragmentation patterns for each phospholipid class by the ion-trap MS were discussed.