title: Multi-dimensional analyses of behavior in mice treated with U-50,488H, a purported kappa (non-mu) opioid agonist.
abstract: The effects of U-50, 488H (trans-3,4-dichloro-N-methyl-N-[2-(1-pyrrolidinyl)-cyclohexyl ]-benzeneacetamide, methane sulfonate, hydrate), a purported selective kappa (non-mu) opioid agonist on spontaneous locomotor activity were investigated using a multi-dimensional behavioral analyzer (Animex II). U-50,488H (1 mg/kg) failed to affect behavior in mice, however, 3 mg/kg significantly reduced rearing and grooming. In addition, 10 mg/kg markedly reduced linear locomotion, rearing and grooming. The behavioral depression induced by U-50,488H (10 mg/kg) was reversible by the opioid antagonist Mr2266 (10 mg/kg). These results suggest that the selective activation of the kappa (non-mu) opioid receptor by U-50,488H decreases linear locomotion, rearing and grooming in mice.
authors.forename: M
authors.initials: M
authors.lastname: Ukai
authors.forename: T
authors.initials: T
authors.lastname: Kameyama
mesh_terms: D019900:3,4-Dichloro-N-methyl-N-(2-(1-pyrrolidinyl)-cyclohexyl)-benzeneacetamide, (trans)-Isomer; D000700:Analgesics / Q000494:pharmacology*; D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects*; D001575:Benzomorphans / Q000494:pharmacology; D006120:Grooming / Q000187:drug effects; D008297:Male; D051379:Mice; D009043:Motor Activity / Q000187:drug effects; D011759:Pyrrolidines / Q000037:antagonists & inhibitors / Q000494:pharmacology*; D011957:Receptors, Opioid / Q000187:drug effects*; D017473:Receptors, Opioid, kappa; D017450:Receptors, Opioid, mu
chemical_list: D000700:Analgesics; D001575:Benzomorphans; D011759:Pyrrolidines; D011957:Receptors, Opioid; D017473:Receptors, Opioid, kappa; D017450:Receptors, Opioid, mu; C027247:MR 2266; D019900:3,4-Dichloro-N-methyl-N-(2-(1-pyrrolidinyl)-cyclohexyl)-benzeneacetamide, (trans)-Isomer