title: The Effect of Muscarinic Receptor Modulators on the Antinociception Induced by CB2 Receptor Agonist, JWH133 in Mice.
abstract: There is no published study regarding the interaction between muscarinic receptor modulators and antinociception induced by cannabinoid receptor (CB2) agonist. The effect of pilocarpine (a muscarinic agonist) and atropine (a muscarinic antagonist) on JWH-133 (a CB2agonist) induced analgesia in mice was studied. First the analgesic effect of JWH-133 (0.001-1 mg/Kg) or pilocarpine (2.5-20 mg/kg) or atropine (0.2-5 mg/kg) was evaluated. Subsequently, the effect of co-administration of pilocarpine (2.5 mg/kg) or atropine (5 mg/kg) and JWH-133 (0.001-1 mg/Kg) were studied too. JWH-133 and pilocarpine provoked antinociception in mice but atropine did not. Pilocarpine potentiated the analgesic effect of JWH-133 but atropine antagonized that. It can be concluded that JWH-133 induced antinociception is affected by muscarinic receptor modulators in mice.
authors: Department of Physiology and Pharmacology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran.
authors: M
authors: M
authors: Alipour
authors: Department of Medicine, McGill University, Montreal, Canada.
authors: F
authors: F
authors: Fekrmandi
authors: Department of Physiology and Pharmacology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran.
authors: S
authors: S
authors: Onsori
authors: Department of Physiology and Pharmacology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran.
authors: P
authors: P
authors: Tabrizian
authors: Department of Physiology and Pharmacology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran.
authors: M R
authors: MR
authors: Jafari
mesh_terms: D000698:Analgesia / Q000379:methods; D000700:Analgesics / Q000494:pharmacology*; D000818:Animals; D001285:Atropine / Q000494:pharmacology; D002186:Cannabinoids / Q000494:pharmacology*; D008297:Male; D051379:Mice; D018721:Muscarinic Agonists / Q000494:pharmacology*; D018727:Muscarinic Antagonists / Q000494:pharmacology*; D010862:Pilocarpine / Q000494:pharmacology; D043885:Receptor, Cannabinoid, CB2 / Q000819:agonists*; D011976:Receptors, Muscarinic / Q000378:metabolism*
chemical_list: D000700:Analgesics; D002186:Cannabinoids; D018721:Muscarinic Agonists; D018727:Muscarinic Antagonists; D043885:Receptor, Cannabinoid, CB2; D011976:Receptors, Muscarinic; D010862:Pilocarpine; D001285:Atropine; C432747:1,1-dimethylbutyl-1-deoxy-Delta(9)-THC