TY - JOUR
T1 - The effects of cannabidiol and tetrahydrocannabinol on motion-induced emesis in Suncus murinus
AU - Cluny, Nina L.
AU - Naylor, Robert J.
AU - Whittle, Brian A.
AU - Javid, Farideh A.
PY - 2008/8/1
Y1 - 2008/8/1
N2 - The effect of cannabinoids on motion-induced emesis is unknown. The present study investigated the action of phytocannabinoids against motion-induced emesis in Suncus murinus. Suncus murinus were injected intraperitoneally with either cannabidiol (CBD) (0.5, 1, 2, 5, 10, 20 and 40 mg/kg), Δ9-tetrahydrocannabinol (Δ9-THC; 0.5, 3, 5 and 10 mg/kg) or vehicle 45 min. before exposure to a 10-min. horizontal motion stimulus (amplitude 40 mm, frequency 1 Hz). In further investigations, the CB1 receptor antagonist, N-(piperidin-1-yl)-5-(4-iodophenyl)-1-(2,4- dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxamide (AM 251; 5 mg/kg), was injected 15 min. prior to an injection of Δ9-THC (3 mg/kg). The motion stimulus was applied 45 min. later. The number of emetic episodes and latency of onset to the first emetic episode were recorded. Pre-treatment with the above doses of CBD did not modify the emetic response to the motion stimulus as compared to the vehicle-treated controls. Application of the higher doses of Δ9-THC induced emesis in its own right, which was inhibited by AM 251. Furthermore, pre-treatment with Δ9-THC dose-dependently attenuated motion-induced emesis, an effect that was inhibited by AM 251. AM 251 neither induced an emetic response nor modified motion-induced emesis. The present study indicates that Δ9-THC, acting via the CB1 receptors, is anti-emetic to motion, and that CBD has no effect on motion-induced emesis in Suncus murinus.
AB - The effect of cannabinoids on motion-induced emesis is unknown. The present study investigated the action of phytocannabinoids against motion-induced emesis in Suncus murinus. Suncus murinus were injected intraperitoneally with either cannabidiol (CBD) (0.5, 1, 2, 5, 10, 20 and 40 mg/kg), Δ9-tetrahydrocannabinol (Δ9-THC; 0.5, 3, 5 and 10 mg/kg) or vehicle 45 min. before exposure to a 10-min. horizontal motion stimulus (amplitude 40 mm, frequency 1 Hz). In further investigations, the CB1 receptor antagonist, N-(piperidin-1-yl)-5-(4-iodophenyl)-1-(2,4- dichlorophenyl)-4-methyl-1H-pyrazole-3-carboxamide (AM 251; 5 mg/kg), was injected 15 min. prior to an injection of Δ9-THC (3 mg/kg). The motion stimulus was applied 45 min. later. The number of emetic episodes and latency of onset to the first emetic episode were recorded. Pre-treatment with the above doses of CBD did not modify the emetic response to the motion stimulus as compared to the vehicle-treated controls. Application of the higher doses of Δ9-THC induced emesis in its own right, which was inhibited by AM 251. Furthermore, pre-treatment with Δ9-THC dose-dependently attenuated motion-induced emesis, an effect that was inhibited by AM 251. AM 251 neither induced an emetic response nor modified motion-induced emesis. The present study indicates that Δ9-THC, acting via the CB1 receptors, is anti-emetic to motion, and that CBD has no effect on motion-induced emesis in Suncus murinus.
UR - http://www.scopus.com/inward/record.url?scp=47749105712&partnerID=8YFLogxK
U2 - 10.1111/j.1742-7843.2008.00253.x
DO - 10.1111/j.1742-7843.2008.00253.x
M3 - Article
C2 - 18816298
AN - SCOPUS:47749105712
VL - 103
SP - 150
EP - 156
JO - Basic and Clinical Pharmacology and Toxicology
JF - Basic and Clinical Pharmacology and Toxicology
SN - 1742-7835
IS - 2
ER -