TABLE 2

Summary of Ki values of lorcaserin using radioligand binding competition with human recombinant 5-HT receptors and neurotransmitter transporters

Data represent Ki values derived from one determination in which eight test lorcaserin concentrations and eight reference compound concentrations were used. Triplicate determinations were made at each compound concentration. Ki values were determined for lorcaserin and the respective reference compounds.


Receptor

Lorcaserin Ki

Reference Compound (Ki)
nM
Human 5-HT1A 700 8-Hydroxy-2-dipropylaminotetralin (0.9)
Human 5-HT3 4430 MDL 72222 (7)
Human 5HT4e 18,900 5-HT (330)
Human 5-HT5A 3710 5-HT (69)
Human 5-HT6 1980 5-HT (110)
Human 5-HT7 636 5-HT (0.4)
Human norepinephrine transporter 1400 Protriptyline (15)
Human dopamine transporter 33,000 1-[1-(2-Benzo[b]thienyl)cyclohexyl]piperidine (6.8)
Human 5-HT transporter
990
Imipramine (1.3)