| AP | Apelin-13 |
| APLN | Apelin |
| AD | Alzheimer’s disease |
| BDNF | Brain-derived neurotrophic factor |
| TrkB | tyrosine kinase receptor B |
| BDNF-AS | Brain-derived neurotrophic factor antisense RNA |
| lncRNA | long non-coding RNA |
| m6A | N6-adenylate methylation |
| METTL3 | methyltransferase-like 3 |
| APJ | angiotensin II type 1 receptor (AT1) -related protein |
| SD | Sprague-Dawley |
| KO | METTL3 knockout rats |
| NOR | Novel Object Recognition Test |
| MWM | Morris Water Maze |
| MeRIP-qPCR | Methylated RIP-qPCR |