The subject of the article is to investigate the mechanism of increased reactions by electrical stimulation of the sympathetic nerve. Materials and methods: Experiments on dogs have shown that stimulant reactions during blockade of a-adrenergic by phentolamine and (3-adrenergic receptors with propranolol were completely eliminated by lizer-gol —the blocker of 5-HT12-receptors. Results: Infusion of lizergol did not influence on duodenal motor activity and the function of the vagus nerve. Conclusion: Effector neuron is found out to be serotonergic and its action is provided by 5-HT1 2 receptors
Sveshnikov D.S., Kirichuk V.F., Smirnov V.M., Myasnikov I. L, Kuchuk A.M., Trofimova J.E., Trubetskaya M.A. Study of nerve fibers nature reinforcing duodenal contractions by electrical stimulation of sympathetic nerve // Saratov Journal of Medical Scientific Research, Vol. 7, Issue 3, 2011, pp. 580-583