5-HT2 Receptor Data
| Receptor Subtype | 5-HT2A | 5-HT2B | 5-HT2C |
|---|
| Transduction Mechanism | ↑ PLC (Gq/11) | ↑ PLC (Gq/11) | ↑ PLC (Gq/11) |
| Primary Distribution | Forebrain, caudate nucleus, nucleus accumbens, hippocampus, olfactory tubercle, vascular smooth muscle, blood platelets | Brain, stomach fundus (rat), gut, heart, kidney, lung | Choroid plexus, cortex, limbic system, basal ganglia |
| Function | Neuronal depolarization, head twitch, hyperthermia, modulation of neurotransmitter release smooth muscle contraction, platelet activation | Contraction of the stomach fundus, anxiety | Hypolocomotion, hypophagia, penile erection, hyperthermia, anxiety, ? noradrenalin and dopamine release |
| Specific Agonists | TCB-2 (2592) | BW 723C86 (1059) |
MK 212 (0941) Ro 60-0175 (1854) SCH 23390 (0925) WAY 161503 (1801) WAY 629 (2173) CP 809101 (3041) 1-Methylpsilocin (3017) |
| Non-selective Agonists |
PNU 22394 (2201)* α-methyl-5-hydroxytryptamine (0557) |
PNU 22394 (2201)* α-methyl-5-hydroxytryptamine (0557) m-CPP (0875) |
PNU 22394 (2201) α-methyl-5-hydroxytryptamine (0557) m-CPP (0875) |
| Specific Antagonists |
R-96544 (1742) Spiperone (0995) MDL 11,939 (0870) 4F 4PP (0523) Risperidone (2865) Altanserin (1809) |
SB 204741 (1372) LY 272015 (3077) |
N-Desmethylclozapine (1007) RS 102221 (1050) SB 242084 (2901) |
| Non-selective Antagonists |
Cyproheptadine (0996) MDL 11,939 (0870) Ritanserin (1955) Amperozide (2746) |
Cyproheptadine (0996) MDL 11,939 (0870) Ritanserin (1955) Amperozide (2746) |
Cyproheptadine (0996) MDL 11,939 (0870) Ritanserin (1955) Amperozide (2746) |
*partial agonist
References
Hoyer et al (1994) VII. International union of pharmacology classification of receptors for 5-hydroxytryptamine (serotonin). Pharmacol. Rev. 46 157. Barnes and Sharp (1999) A review of central 5-HT receptors and their function. Neuropharmacol. 38 1083. Pauwels (2003) 5-HT receptors and their ligands. Tocris Reviews No. 25.