| Molecule | Receptor | References |
| ATP | P2X, Y receptors | |
| Glycine | Glycine receptor | |
| GABA | GABA (A) receptor | |
| Adrenaline | Adrenergic β2 receptor | |
| Acetylcholine | Cholinergic receptors | |
| Dopamine | Dopamine 2-like receptor | |
| Glutamate | NMDA receptor | |
| Oxytocin | Oxytocin receptor (OXTR) | |
| Cortisol | Glucocorticoid receptor (GR) | |
| CRF, ACTH | CRH receptors | |
|
| Melanocortin-1 receptor | |
| Nitric Oxide |
| |