| Active principles | Rating | Bibliogr. | Expand | |
|---|---|---|---|---|
| 1 | Ciliary Neurotrophic Factor | 100 | + | |
| 2 | Pituitary Adenylate Cyclase-Activating Polypeptide | 65 | + | |
| 3 | Nerve Growth Factor | 4 | + | |
| 4 | Glial Cell Line-Derived Neurotrophic Factors | 4 | + | |
| 5 | Brain-Derived Neurotrophic Factor | 4 | + | |
| 6 | Neurotrophin 3 | 3 | + |