| Aa | Amino acid |
| AcAc | Acetoacetate |
| AD | Alzheimer’s disease |
| Aβ | Amyloid β |
| BBB | Blood-brain barrier |
| BCRP | Breast cancer resistance protein |
| βHB | β-hydroxybutyrate |
| BLECs | Brain-like endothelial cells |
| CNS | Central nervous system |
| DMSO | Dimethyl sulfoxide |
| ECM | Endothelial cell medium |
| EGM-2 | Endothelial cell growth medium-2 |
| FCS | Foetal calf serum |
| GLUT1 | Glucose transporter 1 |
| HSA | Human serum albumin |
| KBs | Ketone bodies |
| KD | Ketogenic diet |
| LRP1 | Low-density lipoprotein receptor-related protein 1 |
| LY | Lucifer yellow |
| MCT1 | Monocarboxylate transporter 1 |
| NGS | Normal goat serum |
| Pe | Endothelial permeability |
| PBS-CMF | Phosphate-buffered saline calcium– and magnesium–free |
| P-gp | P-glycoprotein |
| RAGE | Receptor for advanced glycation endproducts |
| RAP | Receptor–associated protein |
| RH | Ringer-HEPES |
| RT | Room temperature |
| SEM | Standard error of the mean |
| TBST | Tris-buffered saline 0.1% Tween 20 |
| ZO–1 | Zonula occludens–1 |