Table 1

Pharmacological potencies of nicotinic ligands in inducing seizures after s.c. administration in mice

DrugED50
mg/kg
(−)-Epibatidine0.029  (0.01–0.04)
(+)-Epibatidine0.021  (0.005–0.04)
6-Chloronicotine0.74  (0.42–0.87)
(−)-Nicotine4.8  (4.1–5.3)
(+)-Nicotine103  (81–130)
AMP-MP300  (180–358)
Anabasine0% at 100
N-MNP0% at 200
AMP-ME300  (287–304)
Cytisine33% at 15
Lobeline50% at 50
(±)-Isonicotine0% at 200
Metanicotine0% at 100
Cotinine0% at 100

Values are expressed as ED50 ± 95% CL or as the percentage of animals producing seizures at the highest dose tested. At least six to eight mice were tested at each dose.