The present work is concerned with the mechanism of the release of inhibitory transmitters in the small intestine of rat. With the modell of synaptosomes, disconnected synaptosomal fractions, the effect of endocannabinoides on inhibitory neurotransmitters, VIP and NO, just as somatostatin and ghrelin was examined. The two cannabinoid receptor agonists, anandamide and WIN 55,212-2, the anandamide transporter antagonist, AMA404 and PMSF, an unspecific proteaseinhibitor, each led to an increase of VIP secretion, as well an increase of NO-synthase activity was seen. Anandamide and WIN 55,212-2 had both no effect on the secretion of somatostatin and ghrelin. SR141716A, a specific cannabinoid receptor 2 antagonist, led to a decrease of anandamide induced increase of VIP secretion, therefore a cannabinoid receptor 2 provided effect. On the other hand no cannabinoid receptor effect on NO synthase activity was provided.
«
The present work is concerned with the mechanism of the release of inhibitory transmitters in the small intestine of rat. With the modell of synaptosomes, disconnected synaptosomal fractions, the effect of endocannabinoides on inhibitory neurotransmitters, VIP and NO, just as somatostatin and ghrelin was examined. The two cannabinoid receptor agonists, anandamide and WIN 55,212-2, the anandamide transporter antagonist, AMA404 and PMSF, an unspecific proteaseinhibitor, each led to an increase of...
»