| CSF | cerebrospinal fluid |
| CM | ceramide |
| dhCM | dihydroceramide |
| LC | liquid chromatography |
| LOAD | late-onset Alzheimer’s Disease |
| LPC | lysophosphatidylcholine |
| PAF_LL | platelet-activating factor-like lipids |
| PE | phosphatidylethanolamine |
| PC | phosphatidylcholine |
| PS | phosphatidylserine |
| GP | glycerophospholipid |
| PLA2 | phospholipase A2 |
| NAPE | N-acyl phosphatidylethanolamine |
| NP | nanoparticles |
| SM | sphingomyelin |
| SMase | sphingomyelinase |
| SP | sphingolipids |
| SF | supernatant fluid |
| xPE | unknown lipid containing phosphoethanolamine |