Ulcers


Authors
Maria Paola Germanò, Valeria D'Angelo, Maria Rita Mondello, Simona Pergolizzi, Francesco Capasso, Raffaele Capasso, Angelo A. Izzo, Nicola Mascolo, Rita De Pasquale

1Pharmaco-Biological Department, School of Pharmacy, University of Messina, Vill. Annunziata, 98168 Messina, Italy
2Biomorphology Department, School of Medicine, University of Messina, Messina, Italy
3Department of Experimental Pharmacology, University of Naples "Federico II", via D. Montesano 49, 80131 Naples, Italy
4Department of Pharmaceutical Sciences, Via Ponte Don Melillo, 84084 Fisciano, Salerno, Italy

Abstract

The effect of cannabinoid drugs (i.p.) on cold/restraint stress-induced gastric ulcers was studied in rats. The cannabinoid receptor agonist (WIN 55,212-2, 0.1-1 mg/kg), but not the less active isomer WIN 55,212-3 (1 mg/kg), reduced gastric ulceration. The protective effect of WIN 55,212-2 (1 mg/kg) was counteracted by the cannabinoid CB1 receptor antagonist SR141716A, but not by the cannabinoid CB2 receptor antagonist SR144528. These results indicate that the antiulcer effect of the cannabinoid receptor agonist WIN 55,212-2 is mediated by cannabinoid CB1 receptors.

Keywords
Cannabinoid receptors, Antiulcer activity, Stomach, Gastroprotection