[Effect of pharmacological substances on the development of hemorrhagic erosions and on the noradrenaline level in the stomach wall in rats].

Hemorrhagic erosions of the gastric mucosa were produced through electric stimulation of immobilized rats via electrodes stuck into the muscles of the fore-paws. In the experiment there was applied square pulsed current of 5--7 v (per 10 rats) with frequency of 50 Hz and the pulse time of 10 ms. Prior to stimulation the rats received intraperitoneally one of the following drugs: clonidin (0.1 mg/kg), benactyzine (3 mg/kg), etherophen (20 mg/kg), benzohexonium (10 mg/kg), iprazid (100 mg/kg), amphethamine (4 mg/kg), atropine (1 mg/kg), tyrosine (300 mg/kg), aethimizol (10 mg/kg) and orotic acid (10 mg/kg). The animals were sacrificed directly after stimulation and the norepinephrine level in the gastric wall was determined after E. Sh. Matlina and T. B. Rakhmanova (1967). Introduction of clonidin, benacyzine, etherophen, benzohexonium and iprazid to immobilized rats after electric stimulation prevented the development of hemorrhagic erosions and a drop of the norepinephrine level in the gastric wall, whereas amphethamine and tyrosine intensified the process of the erosions development in the gastric mucosa and did not prevent a decline in the norepinephrine level. Atropine and aethimizol had no effect on the findings under study.