GW 833972A is a selective CB2 receptor agonist. GW 833972A inhibits induced nerve depolarization and citric acid-induced cough in animal models.
GW 833972A (0.3-300 μM; 10 min) inhibits capsaicin-induced depolarization in humans and guinea pigs, and also inhibits prostaglandin E(2) and hypertonic saline induced depolarization of isolated vagus nerve in guinea pigs[1].
GW 833972A (30 mg/kg, 2 mL/kg; i.p.; single dose 30 min before test) inhibits tussive response in conscious guinea pigs induced by citric acid. It also inhibits capsaicin-induced plasma protein exudation in the main bronchus[1].
References:
[1]. Belvisi MG, et al. Inhibitory activity of the novel CB2 receptor agonist, GW833972A, on guinea-pig and human sensory nerve function in the airways. Br J Pharmacol. 2008 Oct;155(4):547-57.